Installation and Operating Instruction Manual With...

FOR YOUR SAFETY!— Do not store or use gasoline or other

flammable vapors or liquids or othercombustible materials in the vicinity of this orany other appliance. To do so may result in anexplosion or fire.

— WHAT TO DO IF YOU SMELL GAS● Do not try to light any appliance.● Do not touch any electrical switch; do not

use any phone in your building.● Immediately call your gas supplier from a

neighbor’s phone. Follow the gassupplier’s instructions.

● If you cannot reach your gas supplier, call the fire department.

● Do not return to your home until authorized by the gas supplier or fire department.

— Improper installation, adjustment,alteration, service or maintenance can causeproperty damage, personal injury, or death.Refer to this manual. Installation and servicemust be performed by a qualified installer,service agency or the gas supplier.

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WARNING: If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, personal injury or death.!

The purpose of this manual is twofold: one, to provide the installer withthe basic directions and recommendations for the proper installation andadjustment of the water heater; and two, to the owner–operator, toexplain the features, operation, safety precautions, maintenance andtroubleshooting of the water heater. This manual also includes a partslist.

It is imperative that all persons who are expected to install, operate oradjust this water heater read the instructions carefully so they mayunderstand how to perform these operations. If you don’t understandthese instructions or any terms within it, seek professional advice.

Any questions regarding the operation, maintenance, service orwarranty of this water heater should be directed to the seller from whomit was purchased, local distributor or Paloma.

Do not destroy this manual. Please read carefully and keep in a safeplace for future reference.

Recognize this symbol as an indication of Important SafetyInformation!

California Proposition 65 Warning: This product containschemicals known to the State of California to cause cancer, birthdefects or other reproductive harm.

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Installation and Operating Instruction ManualWith Installation Instructions for the Installer

Models:PH-28RIFSN (Natural Gas)PH-28RIFSP (L.P. Gas)

Tankless Water Heater

DESIGN

CERTIFIED ®

Warning: This water heater is not suitablefor use in manufactured (mobile) homes!!

Residential Indoor Gas 199,900 BTU Max Input

Safety InformationSafety Precautions. . . . . . . 3–6

LP Gas Models . . . . . . . . . . . 5

Installation InstructionsLocation . . . . . . . . . . . . . . . . . 7

Water Connections. . . . . . 9-10

Gas Supply. . . . . . . . . . . . . . 11

High Altitude . . . . . . . . . . . . 11

Venting . . . . . . . . . . . . . . 12-16

Remote Control. . . . . . . . 17-18

Electrical Connection . . . . . . 19

Typical Installation . . . . . . . . 20

Pipe Insulation . . . . . . . . . . . 21

Installation Checklist . . . . . . 22

Operating InstructionsLighting Instructions . . . . . . 23

Water Temperature. . . . . 24, 25

Care and CleaningMaintenance. . . . . . . . . . . . . 26

Housekeeping . . . . . . . . 26, 27

Vent Inspection . . . . . . . . . . . 27

Burner Inspection . . . . . . . . 27

Extended Shut-Down. . . . . . 27

Draining . . . . . . . . . . . . . . . . 28

Troubleshooting TipsBefore You CallFor Service . . . . . . . . . . . 29,30

Parts List . . . . . . . . . . . . . . . 31

Warranty. . . . . . . . . . . . . . 32,33

Specifications. . . . . . . . . . . . 34

Inside you will find many helpful hints on how to use andmaintain your water heater properly. A little preventive care onyour part can save you time and money over the life of yourwater heater.

You’ll find many answers to common problems in theTroubleshooting Guide. If you review the chart ofTroubleshooting Tips first, you may not need to call for service.

READ THIS MANUAL

FOR YOUR RECORDSWrite the model and serial numbers here:

##You can find them on a label on the appliance.

Staple sales slip or cancelled check here. Proof of the original purchase date is needed to obtain serviceunder the warranty.

2

Your safety and the safety of others are very important. Thereare many important safety messages in this manual and onyour appliance. Always read and obey all safety messages.

This is the safety alert symbol. Recognize this symbolas an indication of Important Safety Information!This symbol alerts you to potential hazards that cankill or hurt you and others.

All safety messages will follow the safety alert symbol andeither the word “DANGER”, “WARNING”, “CAUTION” or“NOTICE”.These words mean:

DANGER An imminently hazardous situation that will result in death or serious injury.

WARNING A potentially hazardous situation that could result in death or serious injuryand/or damage to property.

CAUTION A potentially hazardous situation that may result in minor or moderate injury.

Notice: Attention is called to observe a specified procedure or maintain a specific condition.

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READ THE SAFETY INFORMATION

Be sure to read and understand the entire Instruction Manual before attempting to install or operatethis water heater. It may save you time and money. Pay particular attention to the Safety Instructions.Failure to follow these warnings could result in serious bodily injury or death. Should you haveproblems understanding the instructions in this manual, or have any questions, STOP, and get helpfrom a qualified service technician, or the local gas utility.

IMPORTANT SAFETY INFORMATION.READ ALL INSTRUCTIONS BEFORE USING.

3

Failure to install and properly vent the water heater to the outdoors as outlined in theVenting Section of the Installation Instructions in this manual can result in unsafeoperation of the water heater. To avoid the risk of fire, explosion, or asphyxiation fromcarbon monoxide, never operate this water heater unless it is properly vented and has anadequate air supply for proper operation. Be sure to inspect the vent system for properinstallation at initial start-up; and at least annually thereafter. Refer to the Care andCleaning section of this manual for more information regarding vent system inspection.

DANGER!INSTALL AND PROPERLY VENT THE WATER HEATER…!

Gasoline, as well as other flammable materials and liquids (adhesives, solvents, paintthinners etc.), and the vapors they produce are extremely dangerous. DO NOT handle,use or store gasoline or other flammable or combustible materials anywhere near or in thevicinity of a water heater or any other appliance. Be sure to read and follow the labels onthe water heater, as well as the warnings printed in this manual. Failure to do so canresult in property damage, bodily injury or death.

WARNING!!

D A N G E R

FLAMMABLES Flammable Vapors

Water heater has a mainburner flame.The main burner flame:1. which can come on at any time and2. will ignite flammable vapors.Vapors:1. cannot be seen,2. are heavier than air,3. go a long way on the floor and4. can be carried from other rooms to the main burner flame by air currents.

Vapors from flammableliquids will explode andcatch fire causing death orsevere burns.Do not use or store flammableproducts such as gasoline,solvents or adhesives in thesame room or area near thewater heater.

Keep flammable products:1. far away from heater,2. in approved containers,3. tightly closed and4. out of children's reach.

Installation:Do not install water heaterwhere flammable products willbe stored or used unless themain burner flame is at least

18" above the floor. This will reduce, but not eliminate, the risk of vapors being ignited by the main burner flame.

Read and follow water heater warnings and instructions. If owners manual is missing, contact the retailer or manufacturer.

Time/Temperature Relationship in Scalds

Water Temperature Time To Produce a Serious Burn

120°F More than 5 minutes125°F 11/2 to 2 minutes130°F About 30 seconds135°F About 10 seconds140°F Less than 5 seconds145°F Less than 3 seconds150°F About 11/2 seconds155°F About 1 second

Table courtesy of Shriners Burn Institute

The chart shown above may be used as a guide in determining the proper water temperature for yourhome.

DANGER: Households with small children,disabled, or elderly persons may require a 120°F. orlower temperature setting to prevent contact with“HOT” water.

Maximum water temperature occurs while burner ison. To find water temperature being delivered, turnon a hot water faucet and place a thermometer in thewater stream and read the thermometer.(See page 24 & 25 for more details.)

The temperature of the water at the outlet of thewater heater can be regulated by setting thetemperature on Remote Control. The remote controlwas set at 100°F before it was shipped from thefactory.

The illustration to the bottom left illustrates theRemote Control and how to adjust the watertemperature.

Notice: When this water heater is supplying generalpurpose hot water requirements for use byindividuals, a thermostatically controlled mixingvalve for reducing point of use water temperature isrecommended to reduce the risk of scald injury.Contact a licensed plumber or the local plumbingauthority for further information.

Notice: The factory setting allows operatingtemperatures between 100°F and 120°F.Temperatures of up to 140°F can be achieved withthe MAIN (UMC-117) (sold separately) remotecontrol and a dip switch adjustment. Contact thedealer, distributor, or Paloma to purchase the MAIN(UMC-117) remote control. Only qualified servicepersonnel should perform this adjustment. Onlyfactory authorized remote control(s) should be used.

D A N G E R!

HOT

Water temperature over 125°F cancause severe burns instantly ordeath from scalds.

Children, disabled and elderly areat highest risk of being scalded.

See instruction manual beforesetting temperature at waterheater.Feel water before bathing orshowering.Temperature limiting valves areavailable, see manual.

BURN

DANGER!WATER TEMPERATURE SETTING!

Safety and energy conservation are factors to be considered when selecting the watertemperature setting of a water heater’s remote control. Water temperatures above 125°Fcan cause severe burns or death from scalding. Be sure to read and follow the warningsoutlined on the label pictured below.

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°F

PRIORITY

POWERON/OFF

100 102 104 106 108 110 112 114 116 118 120 130* 140* °F

Higher (Hotter) Lower (Cooler)

*Requires the optional MAIN (UMC-117) remote control (Sold Separately).

Tepid Hot Hotter Hottest

5

Both LP and natural gas have an odorant added to aid in detecting a gas leak. Some people may not physically be able to smell or recognize this odorant. If you are unsure orunfamiliar with the smell of LP or natural gas, ask the gas supplier. Other conditions, suchas “odorant fade”, which causes the odorant to diminish in intensity, can also hide orcamouflage a gas leak.

DANGER!NATURAL GAS AND LIQUEFIED PETROLEUM MODELS!

● Water heaters utilizing LP gas aredifferent from natural gas models. Anatural gas water heater will not functionsafely on LP gas and vice versa.

● No attempt should ever be made toconvert the water heater from naturalgas to LP gas. To avoid possibleequipment damage, personal injury orfire, do not connect the water heater to afuel type not in accordance with the unitdata plate; propane for propane unitsand natural gas for natural gas units.These units are not certified for anyother fuel type.

● LP appliances should not be installedbelow grade (for example, in a basement)if such installation is prohibited byfederal, state and/or local laws, rules,regulations or customs.

● Propane or LP gas must be used withgreat caution. It is heavier than air andwill collect first in lower areas making ithard to detect at nose level.

● Before attempting to light the waterheater, make sure to look and smell forgas leaks. Use a soapy solution to checkall gas fittings and connections. Bubblingat a connection indicates a leak that mustbe corrected. When smelling to detect agas leak, be sure to sniff near the flooralso.

● Gas detectors are recommended in LPand natural gas applications and theirinstallation should be in accordance withthe detector manufacturer’srecommendations and/or local laws,rules, regulations or customs.

● It is recommended that more than onemethod, such as soapy solution, gasdetectors, etc., be used to detect leaks ingas applications.

Notice: If a gas leak is present or suspected:

● Do not attempt to find the cause yourself.

● Do not try to light any appliance.

● Do not touch any electrical switch.

● Do not use any phone in your building.

● Leave the house immediately and makesure your family and pets leave also.

● Leave the doors open for ventilation andcontact the gas supplier, a qualifiedservice agency or the fire department.

● Stay away from the house (or building)until the service call has been made, theleak is corrected and a qualified agencyhas determined the area to be safe.

6

Have the installer show you the location of the gas shut-off valve and how to shut it off ifnecessary. Turn off the manual shut-off valve if the water heater has been subjected tooverheating, fire, flood, physical damage or if the gas supply fails to shut off.

● Read this manual entirely beforeinstalling or operating the water heater.

● Use this appliance only for its intendedpurpose as described in this InstructionManual.

● Be sure your appliance is properlyinstalled in accordance with local codesand the provided installationinstructions.

● Do not attempt to repair or replace anypart of your water heater unless it isspecifically recommended in thismanual. All other servicing should bereferred to a qualified technician.

SAFETY PRECAUTIONS


WARNING!For your safety, the information in this manual must be followed to minimize the risk offire or explosion, electric shock, or to prevent property damage, personal injury, or loss oflife.

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FOR INSTALLATIONS IN THE STATE OF CALIFORNIACalifornia Law requires that residential water heaters must be braced, anchored orstrapped to resist falling or horizontal displacement due to earthquake motions. Forresidential water heaters up to 52 gallon capacity, a brochure with generic earthquakebracing instructions can be obtained from: Office of the State Architect, 400 P Street,Sacramento, CA 95814 or you may call 916-445-8100 or ask a water heater dealer.

However, applicable local codes shall govern installation. For residential water heaters of a capacity greater than 52 gallons or tankless-style, consult the local buildingjurisdiction code for acceptable bracing procedures.

READ AND FOLLOW THIS SAFETY INFORMATIONCAREFULLY.

SAVE THESE INSTRUCTIONS

Installing the water heater.This water heater must be installed in accordance with these instructions, local codes, utility companyrequirements, and/or in the absence of local codes, use the latest edition of the American NationalStandard/National Fuel Gas Code. A copy can be purchased from either the American Gas Association,400 North Capitol Street Northwest, Washington, DC 20001 as ANSI standard Z223.1 or National FireProtection Association, 1 Batterymarch Park, Quincy, MA 02269 as NFPA 54. In Canada, the latestedition of the CSA B149.1 Natural Gas and Propane Installation, and the Canadian Electrical Code,CSA C22.1 Part 1, in the absence of local codes.

LocationThe water heater should not be locatedin an area where leakage of the heatexchanger or connections will result indamage to the area adjacent to it or tolower floors of the structure.

When such areas cannot be avoided it isrecommended that a suitable catch pan,adequately drained, must be installedunder the water heater.

The pan must not restrict combustionair flow.

A gas fired water heater or any otherappliance should not be installed in a space where liquids which give offflammable vapors are to be used or stored.Such liquids include gasoline, LP gas(butane or propane), paint or adhesives andtheir thinners, solvents or removers.

Because of natural air movement in aroom or other enclosed space, flammablevapors can be carried some distance fromwhere their liquids are being used orstored. The open flame of the waterheater’s main burner can ignite thesevapors causing an explosion or fire whichmay result in severe burns, death orproperty damage.

The water heater must be located so it isnot subject to physical damage, for example,by moving vehicles, area flooding, etc.

If the water heater is installed in a garage,it should be installed so that the directignition system and main burner are noless than 18 inches above the garage floor.

Raising the gas fired water heater willreduce BUT NOT eliminate the possibilityof lighting the vapor of any flammableliquids which may be improperly stored oraccidentally spilled.

● The water heater should be installed asclose as practical to the vent terminationto minimize vent length and the numberof elbows required for venting.

● The water heater should be installedwith the proper venting materials andtermination suitable for Category IIIventing.

● Failure to install and properly ventingthe water heater to the outdoors asoutlined in the Venting Section of thismanual can result in unsafe operation.

● Long hot water lines should be insulatedto conserve water and energy.

● The water heater and water lines shouldbe protected from exposure to freezingtemperatures.

● Do not install the water heater inbathrooms, bedrooms, any occupiedrooms normally kept closed, or inoutdoor areas.

● Do not install the water heater in small,poorly ventilated rooms, or in air tightrooms with air-conditioning.

● Do not install water heater wheresubject to vibrations.

● Do not install the water heater inRecreational Vehicles, Mobile Homes,Boats and other Watercrafts.

● Do not install the water heater nearvents for heating or cooling.

● Minimum clearance from combustibleconstruction is 1/2” sides, 0” rear (withsupport bracket); 12” from the bottom;12” from the front of the water heater;and 12” from the top (24” from frontand top is recommended for servicingpurposes). Maintain a minimumclearance of 2” around the vent pipe tocombustible construction. If theclearances stated on theInstruction/Warning Label, located onthe front panel of the heater differ,install the water heater according to theclearances stated on the label.

7

WARNING: Combustibleconstruction refers toadjacent walls and ceilingsand should not be confusedwith combustible orflammable products andmaterials. Combustibleand/or flammable productsand materials should neverbe stored in the vicinity ofthis or any gas appliance.

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min.1/2 "

min.1/2 "

min. 12"(24" minimum isrecommended for service)

Top = 12"Vent = 2"Front = 12"

min. 2" min. 2"

Back = 0" (with support bracket)Side = 1/2"Bottom = 12"

Minimum Clearancefrom

Combustible Construction

Vent Pipe3" min

2" min2" min

8

Installing the water heater.Proper operation of the water heater requires air for combustion and ventilation. Provisions forcombustion and ventilation air must comply with referenced codes and standards.

Combustion and Ventilation AirNOTICE: If the water heater is installed inan unconfined space within a building ofconventional frame, masonry or metalconstruction, infiltration air is normallyadequate for proper combustion andventilation. If the water heater is installed ina confined space, provisions for combustionand ventilation air must be made.

A confined space is one having a volumeof less than 50 cubic feet per 1000 Btuh ofthe aggregate input of all applianceswithin that space.

The air must be supplied through twopermanent openings of equal area. One is to be located within 12” above the floorand the other is to be located within 12”below the ceiling.

The minimum net free area of each openingmust not be less than one square inch per1000 Btuh of the total input rating of allthe appliances in the enclosure (but notless than 100 square inches), if eachopening communicates with otherunconfined areas inside the building.

Buildings of unusually tight constructionshall have the combustion and ventilationair supplied from outdoors, or a freelyventilated attic or crawl space.

If air is supplied from outdoors, directly orthrough vertical ducts, there must be twoopenings located as specified above andeach must have a minimum net free areaof not less than one square inch per 4000Btuh of the total input rating of all theappliances in the enclosure.

If horizontal ducts are used tocommunicate with the outdoors, eachopening must have a minimum net freearea of not less than one square inch per2000 Btuh of the total input rating of allthe appliances in the enclosure. If ductsare used, the minimum dimensions ofrectangular air ducts shall not be less than3”.

NOTICE: If the duct openings which supplycombustion and ventilation air are to becovered with a protective screen or grill, thenet free area (openings in the material) ofthe covering material must be used indetermining the size of the openings.Protective screening for the openings MUSTNOT be smaller than 1/4”mesh to preventclogging by lint or other debris.

Corrosive AtmospheresThe air in beauty shops, dry cleaningestablishments, photo processing labs,and storage areas for liquid and powderedbleaches or swimming pool chemicalsoften contain such halogenatedhydrocarbons.

An air supply containing halogenatedhydrocarbons may be safe to breathe, but when it passes through a gas flamecorrosive elements are released that will shorten the life of any gas burningappliance.

Propellants from common spray cans orgas leaks from A/C and refrigerationequipment are highly corrosive afterpassing through a flame.

The water heater warranty is voided whenfailure of the heater is due to operation ina corrosive atmosphere.

NOTICE: The water heatershould not be installed nearan air supply containinghalogenated hydrocarbons.

Inspect ShipmentInspect the water heater for possible damage. Check the markings on the rating plate ofthe water heater to be certain the type of gas supplied corresponds to the water heaterrequirements. Verify all included parts are present (see below).

Min. 3"

Air Openings

Min. 200 Sq. In.

Manual Appliance

Gas Shut-off ValveInstruction Manual

Wood Screw x 5pcs. Washer x 4 pcs.Tankless Unit

FOR YOUR SAFETY!

— Do not store or use gasoline or other

flammable vapors or liquids or other

combustible materials in the vicinity of this or

any other appliance. To do so may result in an

explosion or fire.

— WHAT TO DO IF YOU SMELL GAS

● Do not try to light any appliance.

● Do not touch any electrical switch; do not

use any phone in your building.

● Immediately call your gas supplier from a

neighbor’s phone. Follow the gas

supplier’s instructions.

● If you cannot reach your gas supplier, call

the fire department.

● Do not return to your home until authorized

by the gas supplier or fire department.

— Improper installation, adjustment,

alteration, service or maintenance can cause

property damage, personal injury, or death .

Refer to this manual. Installation and service

must be performed by a qualified installer,

service agency or the gas supplier.

!

WARNING: If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, personal injury or death.!

The purpose of this manual is twofold: one, to provide the installer with

the basic directions and recommendations for the proper installation and

adjustment of the water heater; and two, to the owner–operator, to

explain the features, operation, safety precautions, maintenance and

troubleshooting of the water heater. This manual also includes a parts

list.

It is imperative that all persons who are expected to install, operate or

adjust this water heater read the instructions carefully so they may

understand how to perform these operations. If you don’t understand

these instructions or any terms within it, seek professional advice.

Any questions regarding the operation, maintenance, service or

warranty of this water heater should be directed to the seller from whom

it was purchased. If additional information is required, refer to the

section on How to Obtain Service Assistance.

Do not destroy this manual. Please read carefully and keep in a safe

place for future reference.

Recognize this symbol as an indication of Important Safety

Information!

California Proposition 65 Warning: This product contains

chemicals known to the State of California to cause cancer, birth

defects or other reproductive harm.

!

!

Use & Care ManualWith Installation Instructions for the Installer

Printed in USA

Water HeatersResidential Gas

Warning: This water heater is not suitable for

use in manufactured (mobile) homes!

Tankless

DESIGN

CERTIFIED ®

°F

PRIORITY

POWERON/OFF

Remote Control

Assembly Kit

9

Water Supply ConnectionsIMPORTANT: Do notapply heat to the HOT orCOLD water connections. Ifsweat connections are used,sweat tubing to adapterbefore fitting adapter to thewater connections onheater. Any heat applied tothe water supply fittingswill permanently damagethe internal components ofthe water heater.

Mounting the Water HeaterMake sure the location of the applianceallows for easy access and operation.

Wall studs should be utilized whenmounting the water heater to the wall.

In case of dry wall or concrete wall usedry wall anchors or lag bolts.

The water heater requires 120VAC/60Hz.Have a receptacle with ground terminalnear the water heater. The length of thepower supply cord is 10 feet.

Install a wood screw for the upper bracketwith a clearance of 1/8” between the walland the screw head. Hang the center of theupper bracket on the screw.

Using a wood screw and a washer, affixthe lower bracket to the wall (Left andRight). Repeat to affix the top bracket.

The brackets can be adjusted to changethe distance between the back of theappliance and the wall within the range of3/8” to 1½”.

Loosen the adjustment screws of both thetop and the bottom brackets to adjust thedistance. (See diagram below)

Bracket

BracketAdjustment Screws

Adjustment ScrewsTOP

BOTTOM

Upper Bracket Wood Screw

Washer

Wood Screw

Washer

Washer

Wood Screw Lower Bracket

1/8"Clearance

Plumbing should be carried out by aqualified plumber in accordance with localcodes.

Use approved plumbing materials only.

All material between the water supply andthe water heater must be metal.

The diameter of the pipe lines should be aminimum of 3/4”.

To conserve energy and to preventfreezing, insulate both cold and hot watersupply lines. DO NOT cover the drainvalves.

To ensure proper operation of the waterheater, the following water pressureguidelines should be followed:

● Operation of the water heater requiresthe minimum water pressure of 14 psiand a minimum water flow rate of0.66 gpm.

● Additional water pressure is requiredfor long pipe runs and outlet fitting(s)water pressure drops.

● To maintain proper performance, ensuresufficient water supply pressure. TheRequired Water Pressure = Min.Operating Water Pressure (14 psi) +Pipe Pressure Loss + Faucet andShower Pressure Loss + Safety Margin(more than 5 psi).

● To supply hot water to upper floors,additional water pressure (0.44 psi/ft)must be ensured. The measurementshould be calculated by the distancebetween the water inlet of the waterheater (ground level) to the hot waterfaucet (upper floor level).

● Well water systems should be set at arange of 50-60 psi.

● When the water is supplied from awater supply tank, the height of thetank and the diameter of the pipes andtheir relation to water pressure, shouldbe taken into consideration. Gravitywater pressure is not recommended.

Notice: If the water flow resistance of ashower head is too high, the burner in thewater heater will fail to ignite. Keep theshower head clean from debris that couldcause additional pressure drop.

Notice: If using mixing valves on theoutlet, choose one which prevents coldwater pressure from overcoming hot waterline pressure.

CAUTION: This waterheater must only be usedwith the following watersupply system conditions:

● With clean, potable waterfree of corrosivechemicals, sand, dirt, orother contaminates.

● With inlet watertemperatures above 32°F,but not exceeding 120°F.

● Free of lime and scaledeposits.

● DO NOT reverse the hotand cold waterconnections. The waterheater will not operate.

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CAUTION:Reinforcement of the wall isrequired in case the wall isnot strong enough to holdthe appliance.

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10

Installing the water heater.

Relief ValveA new pressure relief valve, complyingwith the Standard for Relief Valves andAutomatic Gas Shut-Off Devices for HotWater Supply Systems, ANSI Z21.22,must be installed at the hot water outletconnection of the water heater at thetime of installation. Local codes shallgovern the installation of relief valves.

For safe operation of the water heater, besure that:

● The pressure rating of the relief valvemust not exceed 150 psi, the maximumworking pressure of the water heater asmarked on the rating plate.

● The BTUH rating of the relief valvemust equal or exceed the BTUH inputof the water heater as marked on itsrating plate.

● No valve of any type should beinstalled between the relief valve andthe water heater

● Discharge from the relief valve shouldbe piped to a suitable drain to eliminatepotential water damage. Piping usedshould be of a type approved for thedistribution of hot water.

● Hot and cold water lines should beinsulated up to the water heater. Referto page 21 for details.

● The discharge line must be NOSMALLER than the outlet of the valveand must pitch downward to allowcomplete drainage (by gravity) of therelief valve and discharge line.

● The end of the discharge line should notbe threaded or concealed and should beprotected from freezing. No valve ofany type, restriction or reducer couplingshould be installed in the discharge line.

Notice: Local codes govern theinstallation of relief valves. If local codesrequire that a temperature and pressurerelief valve should be installed themanufacturer recommends a type 40XLWatts T&P relief valve or an equivalentmodel be used.

Notice: Manual operation of relief valvesshould be performed at least once a year.Turn off the electrical power and gasshutoff valve. Lift and release lever on therelief valve and check the manualoperation of the relief valve. You shouldtake precaution to avoid contact with thehot water coming out of the relief valveand to prevent water damage.

Notice: If the relief valve on the systemdischarges periodically, a problem existsand service to the water system isrequired.

Water Supply Connections Continued.Install a shutoff valve near the inlet of thewater heater for service and drainingpurposes.

DO NOT use pipes with smaller diametersthan the water supply connection of thewater heater.

Before connecting the water supply pipeto the water heater, open the shutoff valveand clean out sand, debris, air, caulkingmaterial, etc. inside the pipe. Connect tothe water inlet, then check water flow.Close the shutoff valve and clean thewater filter.

Be sure to connect the water inlet and thehot water outlet as shown on the waterheater. If reversed, the water heater willnot function.

Installation of unions or flexible copperconnections are recommended on theHOT and COLD water lines, so that thewater heater may disconnect easily forservicing if necessary.

Install a Check Valve between the waterheater and the water shutoff valve. (Seeillustration the top left).

The following should be addressed inregards to the HOT WATER OUTLET:

● Connections between the water heaterand point(s) of use should be as shortand direct as possible.

● DO NOT use lead or plastic pipe.

● To conserve energy and minimize heatloss, insulation of hot water piping isrecommended. (See Hot and Cold PipeInsulation Installation on page 21).

Notice: The flow rate of hot water mayvary when more than two faucets(appliances, fixtures, etc.) are being usedsimultaneously.

Notice: The pipes MUST be completelydrainable. If the hot water faucets arelocated at a point higher than the waterheater, place a drain valve at the lowestpoint (see diagram to the left).

Water Filter

Check Valve

Water Inlet

Clean the

Water Filter

Water

Nipple

Air

Relief

Valve

Hot

Water

Tap

Drain Valve

Union

PressureRelief Valve

WaterShutoffValve

ColdWaterSupply

InletHot Water

SupplyOutlet

ReliefValveDischargeLine

Notice: The above illustrates apressure only relief valve. If localcodes require a combinationtemperature and pressure reliefvalve be installed, an extensionpiece may be needed. (Refer topage 20 for example of extensionpiece for T&P relief valveinstallation.)

11

WARNING: Do not attempt to convert this water heater for use with a different type of gas other than the typeshown on the rating plate. Such conversion could result in hazardous operating conditions.!

Leak TestingThe water heater and its gas connectionsmust be leak tested at normal operatingpressures before it is placed in operation.

Turn on the gas shut-off valve(s) tothe water heater.

Use a soapy water solution to test forleaks at all connections and fittings.Bubbles indicate a gas leak that mustbe corrected.

The factory connections should also beleak tested after the water heater is placedin operation.

High AltitudeRatings of gas appliances are based onsea level operation and need not bechanged for installations at elevations upto 3,280 feet.

NOTICE: For installations above 3,280feet, the connector on the PC boardmust be replaced for High Altitudeinstallations. Please contact your localdistributor, dealer, or Paloma forreplacement connector.

Pressure Testing the Gas Supply SystemThe water heater and its manual gas shut-off valve must be disconnected from thegas supply piping system during anypressure testing of the system atpressures in excess of 1/2 psi (14” w.c.).

The water heater must be isolated fromthe gas piping system by closing themanual gas shut-off valve during anypressure testing of the gas supply piping atpressures equal to or less than 1/2 psi (14” w.c.).

Gas SupplyThe supplied Manual Gas ApplianceShutoff Valve must be installed at the gasconnection of the water heater at the timeof installation (see diagram to the left).

The branch gas supply line to the waterheater should be clean 3/4” black steelpipe or other approved gas pipingmaterial.

A ground joint union or ANSI designcertified semi-rigid or flexible gasappliance connector should be installed inthe gas line close to the water heater. TheNational Fuel Gas Code (NFGC)mandates a manual gas shut-off valve: See(NFGC) for complete instructions.

If flexible connectors are used, themaximum length shall not exceed 36”.

If lever type gas shut offs are used, theyshall be T-Handle type.

Compound used on the threaded joints ofthe gas piping must be of the typeresistant to the action of LP gas. Usecompound sparingly on male threads only.

A sediment trap should be installed at thebottom of the gas line.

Do not use excessive force (over 31.5 ftlbs.) in tightening the pipe, particularly ifteflon pipe compound is used, as the unitmay be damaged.

The inlet gas pressure to the water heatermust not exceed 10.5” w.c. for natural or14” wc for LP gas. For purposes of inputadjustment, the minimum inlet gaspressure (with main burner on) is shownon the water heater rating plate. If high orlow gas pressures are present, contact yourgas supplier for correction.

WARNING: Never usean open flame to test forgas leaks, as propertydamage, personal injury, ordeath could result.

!

Manual Gas

Appliance

Shut-off(Supplied)

Sediment

Trap

Manual

Gas

Supply

Line

Shut-off

Valve

Union

Cap

WARNING: Install agas pressure regulator, inthe gas supply line, whichdoes not exceed themaximum supply pressure.DO NOT use an industrialtype gas regulator.

!

12

Installing the water heater.The water heater must be installed with a vent adapter such as 9401RHM or FSAA4 or a UL approvedCategory III Stainless Steel equivalent.

VentingThe installation of venting must complywith national codes, local codes, and thevent manufacturer’s instructions

The water heater must be vented to theoutdoors as described in these instructions.DO NOT connect this water heater to anexisting Vent or Chimney, it must bevented separately from all otherappliances.

All vent components (adapters, pipe,elbows, terminals, etc.) should be UL1738Certified Stainless Steel Venting Material(e.g. AL29-4C).

The specified vent termination must beused. The termination should be a 90°elbow type with screen. (Refer to page 15)

Use a vent pipe with an anti-disconnectionstructure.

The use of a High Temperature Silicone(500°F) may be required to seal ventconnections. To prevent accidental gasexhaust leakage, apply a 1/4” wide beadapproximately 1/4” from the end andanother bead against the joint side of thestop bead.

Follow vent manufacturer’s installationinstructions.

The unit can be vented either horizontallyor vertically.

Vent pipe runs must be adequatelysupported along both horizontal andvertical runs.

The maximum recommended unsupportedspan should be no more than five (5) feet.Support isolation hanging bands should beused. DO NOT use wire. (See diagrambelow).

DANGER: Failure toinstall the vent adapter andproperly vent the waterheater to the outdoors asoutlined in the Ventingsection of this manual willresult in unsafe operation ofthe water heater causingdeath, serious injury,explosion, or fire. To avoidthe risk of fire, explosion,or asphyxiation fromcarbon monoxide, NEVERoperate the water heaterunless it is properly ventedand has adequate air supplyfor proper operation asoutlined in the Ventingsection of this manual.

WARNING: Use ULapproved Category IIIStainless Steel vent materialonly. No other ventmaterial is permitted.

WARNING: Refer topage 7 for clearances tocombustible material.

!

!

!

NO! YES!

Venting LengthsMAXIMUM VENT LENGTH - Thesystem will not operate if there isexcessive restriction (pressure drop) in theventing system. A maximum of 47 feet 6inches of vent pipe may be used providedthere is only one 90° elbow in the system.If additional elbows are required: twoelbows can be used with 42 feet 6 inches,and three elbows can be used with 37 feet6 inches of vent pipe.

A 90° elbow is equivalent to 5 feet tostraight pipe. A 45° elbow is equivalent to2 feet 6 inches of straight pipe.

The termination elbow does not count asan elbow when determining total ventlengths.

The vent can be installed with a slightdownward slope of 1/4” per foot ofhorizontal run toward the vent terminal(see diagram below). This ensures thatany condensate formed during operationof the unit is evacuated from theappliance.

A 1/4” per foot upward slope is acceptablewhen it is not possible to vent with adownward slope, however, a UL approvedCategory III Stainless Steel condensatetrap MUST be installed at the beginningof the horizontal run (See page 15“Typical Horizontal Termination w/ 1/4” per foot UPWARD Slope” or page 16, “Standard Vertical VentTermination” for examples).

MINIMUM VENT LENGTH - Theventing may be as short as 12”, providedone vent termination is installed to theoutdoors through a sidewall, one 90°elbow is included in the installation, andthe wall thimble is installed.

Notice: Make sure that the seam of thevent pipe in horizontal runs is toward thetop of the installation (see illustration tothe far left).

Max. 2 feet

More than 3"

1/4" per foot

downward slope.Vent Seam

Numberof

90° elbows(bends)

1

2

3

MaximumLength

ofStraight

Pipe

47' 6"

42' 6"

37' 6"

One (1)90° Elbow is Equivalentto 5 Feet of Straight Pipe

13

Venting Through Closed SpacesIf the vent piping passes through a closed space, wrap the ventpipe with inflammable insulation material that is at least 3/4”thick. DO NOT let the insulation material make contact withflammable materials. A minimum clearance of 3” between thevent pipe and ceiling should be maintained. Be sure to followlocal codes.

For maintenance and inspection purposes, the following holesare required to be made.

● Two (2) inspection openings that allow access to venting.One (1) of these openings should be close to where thevent pipe enters the ceiling. The other opening should benear the vent termination.

● A ventilation hole with a 16 sq. in. opening should bemade at least every 10 feet.

NOTICE: Vent pipes must be completely insulated withinflammable material when installed in alcoves, closets, andgarages and must not touch any flammable material.

Inspection

Hole #1Inspection

Hole #2

Ceiling

Board

Vent Pipe

Insulation

MaterialWall Thimble

1/4” per foot

downward slope

Vent AdapterA UL approved vent adapter is requiredfor vent connection.

Read the following instructions beforeinstallation.

● Test fit the adapter over the waterheater collar before proceeding. Adjustclamp as needed.

● With an alcohol wipe, clean insidesurface "A" of adapter and outsidesurface of "B" of heater collar.

● Apply 1/4" wide bead of hightemperature silicone (500°F) aroundoutside of heater collar "B".

● Slide adapter end "A" down over heatercollar "B" as far as it will go.

● Tighten the clamp around the collar.

● Inspect the inside of the adapter toverify that the collar and adapter aresealed. If more sealant is required,apply sealant to a flat tool, then spreadaround the collar edge on inside ofadapter.

● Ensure that the clamp does not interferewith the damper shaft.

NOTICE: Follow the vent adaptermanufacturer’s instructions

A

B

High Temp.

Sealant

Collar

Vent Adapter

Clamp

Water Heater

Exhaust

Flow

Draining the CondensateIn certain conditions, installations inunconditioned space or having longhorizontal or vertical runs may accumulatecondensate.

In order to prevent condensate fromdraining back into the water heater, werecommend a condensate trap and drain tobe installed in a horizontal vent section asclose as practical to the water heater ventconnection.

Condensate is known to be acidic; refer tolocal, state (provincial) or federal codesfor proper handling methods.

14

Installing the water heater.Horizontal Vent Terminal LocationThe location of the vent terminal depends on the followingminimum clearances and considerations (see illustration):

Twelve (12) inches above grade level and above normal snow levels.

Four (4) feet below, or four (4) feet horizontally from anydoor, window, soffit, under eave vent or gravity air inlet tothe building or other appliances, or from gas or electricmeters. Do not locate vent above walkways, doors,windows, air inlets, gas or electric meters or otherequipment.

Ten (10) feet from any forced air inlet to the building. Any fresh or make-up air inlet such as for a dryer or furnace area is considered to be a forced air inlet.

Eighteen (18) inches from an inside corner formed by twoexterior walls.

4' 4'

Soffit vents

18"

4'

4'

4'

18"

Electric

meter

Inside

corner

10'

Fresh

air

intake

12" (Above grade/snow level)window or vent

Additional ConsiderationsDo Not install vent terminal under any patio or deck.

To help prevent moisture from freezing on walls and under eaves, do not locate vent terminal on the side of a buildingwith prevailing winter winds.

Do Not terminate vent pipe directly on brick or masonrysurfaces. Use a rust-resistant sheet metal backing plate (2 x 2 feet) behind vent. (See illustration.)

Do Not locate vent terminal too close to shrubbery, as fluegasses may damage them.

Caulk all cracks, seams and joints within six (6) feet of ventterminal.

All painted surfaces should be primed to lessen the chance ofphysical damage. Painted surfaces will require maintenance.

Insulate vent pipe exposed to cold conditions (attics, crawlspaces, etc.) with inflammable material to help preventmoisture from accumulating in vent pipe.

Do Not extend exposed vent pipe outside of building.

If soffit vent is tooclose, block off andinstall new vent atanother locationInside

cornerCaulk

Caulk

Caulk

6' caulkzone orto edge ofwindow etc., starting within 6'

Rising moisture willcollect under eaves

4'

6'

6' caulkzone

2 ft. sq. sheet metal plate onbrick or masonary surface

RTV silicone caulk

WARNING: Moisture in the flue gas will condense as itleaves the vent terminal. In cold weather this condensate canfreeze on the exterior wall, under the eaves and onsurrounding objects. Some discoloration to the exterior ofthe building is to be expected. However, improper locationor installation can result in severe damage to the structureor exterior finish of the building

!

15

Vent Horizontal Wall Thimble Installation

An approved 4 inch Vent Horizontal WallThimble (Round Type) must be used.

The Wall Thimble requires mechanicalsupport from the wall sufficient to supportany incidental loads on the system. If thewall is not sufficient enough to support theWall Thimble, then appropriate additionalframing and/or blocking is required.

INSTALLATION PROCEDURE:Prepare an opening for the Wall Thimblein the wall. The opening must be 6-1/2inches in diameter for a 4 inch ventsystem. The opening should be round.

If there are not sufficient support membersto secure the Wall Thimble or if there is asemirigid foam insulation layer under thesheathing, appropriate fasteners must beused to secure the Wall Thimble to thesupport members.

The Wall Thimble is designed to adapt toany wall thickness from 3-1/2” to 6” thick.If the wall is thicker than 6” the WallThimble may be extended using a piece of6” diameter snaplock or welded seamgalvanized pipe up to 6” long.

Select the larger diameter half of the WallThimble for the outside of the wall.

● Apply a continuous bead of highquality silicone or silicone/latex caulkon the inside of the outer flange. Thiswill be the only weather seal to keepmoisture outside the building. Ensure asufficient seal is made.

● Position this portion of the WallThimble into the prepared hole from theoutside. Secure the assembly into theprepared opening using fasteners asindicated by sheathing or structuralmembers, sealing the screw heads withmore caulking.

Use 4 hollow wall anchors, at least 1/8”in diameter and of appropriate length forthe thickness of the sheathing, ifsheathing is particle board or othercomposite material. Use 4 #10x1-1/4”wood screws for plywood, solid woodsheathing or members. Use suitablemasonry anchors when passing throughsolid masonry walls. Reinstall thedecorative sheathing around the WallThimble. This assembly may be paintedto match the exterior decor.

● Attach a screened 4 inch terminationfitting to the female end of a ventsection or slip connector. Use themethod described in the Ventinginstallation instructions (page 12). Slidethe vent in through the outside of theThimble and seal the annular spacewith a thick bead of caulk.

● Slide the interior portion of the Thimbleinto the inside hole. Be certain theinterior and exterior Thimble halvesoverlap at least 1”. If insufficientoverlap exists, extend the interiorportion with single wall galvanizedpipe.

● Secure the Wall Thimble to the interiorsheathing using suitable fasteners.

● Secure the vent section or slipconnector that protrudes through theWall Thimble to the rest of the ventsystem as described in the Ventinginstallation instructions (page 12).

Inner ThimbleSection

Outer ThimbleSection

90° Elbow

Combustible Wall

CombustibleSheathing

Inner ThimbleSection

Outer ThimbleSection

VentPipe

WaterHeater

Caulk forweather seal

Outside Wall

90° terminationwith screen

MountingBrackets

Side View

Side View

WARNING: Use ULapproved Category III ventmaterial only. No othervent material is permitted.

!

CAUTION: Follow thevent manufacturersinstallation instructions asdesign might vary frommanufacturer tomanufacturer.

!

Vent

Adapter

3” Clearance

Support

HangerCondensate

Trap

To Drain. Dispose of

condensate in accordance

to local codes

1/4” per foot upward slope

2’

Max

Vent

Adapter

3” Clearance

Support

Hanger

1/4” per foot downward slope

2’

Max

Typical Horizontal Terminationw/ ¼” per foot DOWNWARD Slope

Typical Horizontal Terminationw/ ¼” per foot UPWARD Slope

16


Vertical Vent InstallationOnce the vent terminal location has beendetermined, make a hole through the roofand interior ceiling to accommodate thevent pipe. Complete the vent pipeinstallation to the water heater's ventconnector fitting on the water heater ventcollar outlet. Support vertical or horizontalruns as previously mentioned. If required,use silicone sealant at the point the ventconnector joins the water heater.

Install adequate flashing where the ventpipe passes through the roof. Determinethe vent terminal height and install thevent pipe accordingly. Refer to toillustration below for proper vent terminalheight. Connect vent elbow onto verticalpipe through roof. Connect short piece ofvent pipe (approximately 3" long) toelbow, then insert 1/2" mesh metal screeninto terminal elbow and join it to the shortpiece of vent pipe.

Chase Requires

6” Clearance

to Combustibles

Firestop

Firestop

Roof Jack

Adjustable

Roof Flashing

Vent

Adapter

3” Clearance

Support

HangerBoot Tee



to local codes

Rain CapStorm

Collar

Support

Clamp

1/4” per foot downward slope

2’

Max

Chase Requires

6” Clearance

to Combustibles

Firestop

Firestop

Roof Jack

Adjustable

Roof Flashing

Vent

Adapter

3” Clearance

Support

HangerCondensate

Trap



to local codes

Storm

Collar

Support

Clamp

1/4” per foot upward slope

2’

Max

Standard Vertical Vent Termination Vertical Vent Terminationwith Rain Cap

Vertical Vent Termination LocationThe location of the vent terminal depends on the followingminimum clearances and considerations (see illustration):

Minimum twelve (12) inches above roof.

Minimum twelve (12) inches above anticipated snowlevel.

Maximum twenty-four (24) inches above roof levelwithout additional support for vent.

Four (4) feet from any gable, dormer or other roofstructure with building interior access (i.e., vent,window, etc.).

Ten (10) feet from any forced air inlet to the building.Any fresh or make-up air inlet such as a dryer orfurnace area is considered to be a forced air inlet.

Min. 12" Above Roof

Min. 12" AboveAnticipatedSnow Level.

Max. 24" Above Roof(Without AdditionalSupport)

Vent PipeThrough Roof

Elbow

Termination Elboww/ Protective Screen

Small (6” min) section of vent

17

Remote Control InstallationOne (1) remote control is provided withthe water heater. Additional remotecontrols may be purchased separately. Upto three (3) remote controls can be usedwith this water heater.

The following are considerations fordetermining the location of the remotecontrol(s):

●● DO NOT install any remote controloutdoors.

●● Place remote control(s) out of children’sreach.

●● The remote control(s) can be installed inconvenient locations such as the kitchen,laundry room, utility room, or directly besidethe water heater.

●● The included remote control can be placed ina convenient location in a bathroom,however, AVOID areas where water maycome into contact with the control(s).

●● Avoid areas where the remote control(s)may be exposed to heat, e.g. stoveranges or heaters.

●● Avoid areas where the remote control(s)may be subjected to oil and/or steamfrom cooking.

●● Avoid areas where chemical agents(such as thinner, benzine and alkaline)are used.

●● Avoid areas of direct sunlight.

●● The MAXIMUM distance between thewater heater and the remote control(s)installation location is limited to 195feet of wire.

NOTICE: Only one of each type ofremote controls can connect to thewater heater. Therefore, a maximum ofthree controls can connect to the waterheater.

No other manufacturer’s controls aresuitable for use with this water heater.

DO NOT attempt to disassemble theremote control.

WARNING: Field wiring connections and electrical grounding must comply with localcodes, or in the absence of local codes, with the latest edition of the National Electrical Code,ANSI/NFPA 70, or in Canada, Canadian Electrical Code, CSA C22.1 Part 1.

!

°F

PRIORITY

POWERON/OFF

Remote

Control

Base Plate

Foam Packing

(with Adhesive Paper)

Control screw

Mounting Screw x 2

Remote ControlModel Number

Remote ControlDescription

TemperatureSet Point Range Availability

USC1-117 BATH1 100°F - 120°F Provided

USC2-117 BATH2 100°F - 120°F Optional(Sold separately)

UMC-117 MAIN 100°F - 140°F Optional(Sold separately)

NOTICE: The providedremote control will allow amaximum temperaturesetting of 120°F. If highertemperatures (up to 140°F)is desired, a MAIN(UMC-117) remote control isavailable (sold separately).Contact your dealer fordetails.

18

Installing the water heater.WARNING: Field wiring connections and electrical grounding must comply with local

codes, or in the absence of local codes, with the latest edition of the National Electrical Code,ANSI/NFPA 70, or in Canada, Canadian Electrical Code, CSA C22.1 Part 1.

!

Remote Control

Connection Terminals

Gas Valve

PCB

18 AWG

Extension

Cable

Clamp

NOTICE: Extension cablecan be any Type-T 18 AWGwire similar to a thermostatwire and is not polaritysensitive.

Do Not apply sealant to theremote control cable.

It is not recommended tohave wiring exposed.

Remote Control Installation Continued...Connecting BATH1 (supplied) and/orBATH2 (sold separately) remote control tothe water heater:

●● Drill a 1” to 1.5” hole at the proposedcontrol location.

●● Install the extension cable between thelocation of the remote control and thewater heater.

●● Remove the base plate from the control.

●● Peel off one side of the adhesive paperfrom the foam packing and adhere tothe back face of the base plate (This isthe side without the projections).

●● Peel off the remaining adhesive paperfrom the foam packing.

●● Draw the remote control extensioncable through the central in the baseplate.

●● Fix the base plate to the wall usingsuitable screws and wall anchors.Ensure the projections on the base plateare pointing upwards.

●● Connect the remote control cables tothe extension cable from the waterheater.

●● Place the remote control over the baseplate. Ensure the projections in thebase plate fit into the housings in theremote control(s).

●● Fix the control to the base plate at thebottom of the remote control using thescrew provided.

●● Proceed to “Connection the remotecontrol to the water heater” section tocomplete installation.

Connecting the remote control(s) to thewater heater:

●● Ensure that the power to the waterheater has been disconnected.

●● Remove the front cover of the waterheater.

●● Insert the remote control extensioncable through the hole at the bottomright hand corner of the water heater.

●● Connect the wires to the terminals onthe top right hand side of the PrintedCircuit Board (PCB) as shown inillustration to the left.

NOTICE: The remote control wireconnection terminals are not polaritysensitive.

●● Firmly tighten the terminal screws.

●● Secure the remote control extensioncable using the appropriate clamp.

●● Replace the front cover of the waterheater.

●● Switch on the power supply to thewater heater.

●● Ensure proper operation of the remotecontrol(s) and water heater.

Notice: The BATH controls can beconnected in parallel as describedabove, or in series by attaching theextension cable(s) to the terminals onthe back of the MAIN remote control.

Remote

Control

Projections

Suitable

Wall Anchors

Adhesive

Paper

Foam

Packing

Base Plate

Screws

Control

Screw

Control

Cable

Extension Cable

Wall

Penetration

19

Electrical Connection

POWER CORD:

● The electric power supply requirementfor this water heater is 120 VAC/60HZ,2 Amps.

● The water heater comes with a three (3)pin power supply cord. Use only apower outlet with a ground terminal.

● The installation of an electric leakagebreaker is recommended.

● Keep any excess of the power supplycord on the outside of the water heater.

● If local codes require hardwiring, seeinstructions for “Hardwiring theElectrical Connections”.

HARDWIRING THE ELECTRICALCONNECTIONS:

● Wiring should be carried out by aqualified electrician in accordance withlocal codes.

● The water heater requires 120 VAC/60Hzand should be properly grounded.

● DO NOT connect grounding wire towater pipes, gas pipes, telephonecables, lightning conductor circuits andto grounding circuit of other equipmentthat carry a ground-fault interrupter.

● An ON/OFF switch must be providedand installed for the incoming120VAC power.

● Wire the water heater exactly as shownbelow. A wiring diagram is also foundinside of the cover panel.

● A green screw is provided in thejunction box for grounding connection.

● Connect the live wire to black leg wireand the neutral wire to the white neutralwire.

WARNING: Shockhazard line voltage ispresent. Before servicingthe water heater, turn offthe electrical power to thewater heater at the maindisconnect or circuitbreaker. Failure to do socould result in severepersonal injury or death.

CAUTION: Label allwires prior todisconnection whenservicing controls. Wiringerrors can cause improperand dangerous operation.Verify correct operationafter servicing.

!

!

B

8

R GR Y B O W BR

AIRINTAKEFILTERSWITCH

TRANSFORMER

GND

BK

GND

WATERFLOWSENSOR

OVER HEATLIMITER

BK:BLACK

COLOUR CODE

BR:BROWN

R:REDW:WHITE

B:BLUEGY:GRAYGR:GREEN

O:ORANGEY:YELLOW

G/Y:GREEN/YELLOW

REMOTE REMOTE REMOTE

(UMC-117) (USC1-117) (USC2-117)

FANMOTORFM

5

WIRING DIAGRAM

FUSE(3A)CIRCUITBOARD

SV3 SV2 SV1 SV0

W

BROY

WW

CONNECTOR FOR CHECKINGTHERMOELECTROMOTIVE FORCE

FUSE(5A)

21

U21

O

S

1

32

B

RGRYBOW

R1

BR

R2R3R4

GRGR

GYGY

WYR

RR

BRB Y

W

R

W

W

R

W

BK

BKBK

BK

BK

BK BKBK BK BK BK

BK BKW

BKIGNITER ELECTRODE

W

1234567

12

12

81234

Q

P

R

123456

1234567

OFF

ON

12 3 4

I

J

H

FD E

BA

PSV

ML

- +

K

G

T

CONTROL MOTORWATER VOLUME

LIMITER MOTOR

SW2SW1

SW3

R

RG/Y BK

WAC100V G/Y

WAC120V

FOR INDOORMODEL ONLY

1456 3

2

3 652

1 4 IG

WV

B

DIP SWITCH

ADJUSTERBUTTON

MINBUTTON

MAXBUTTON

MAIN

WATER BY-PASSSOLENOID VALVE

VALVE

3

SOLENOID

VALVE

2

SOLENOID

VALVE

1

SOLENOID

VALVE

0

SOLENOID

GAS

INLET

THERMISTOR

AIR

AMBIENT

THERMISTOR

INLET

WATER

THERMISTOR

EXCHANGER

HEAT

THERMISTOR

HOT

WATER

OUTLET

VALVE

FROSTPROTECTIONTHERMOSTAT

WWWWW

BKBKBK

BKBKWW

W

W

WBK

FOR INDOORMODEL ONLY

ANTI-FROSTHEATER

THERMOCOUPLE

(BLUE)

(RED)

(RED)

R W

CONTROL

BATH BATH

CONTROL1 CONTROL2

LEDFLAME ROD1FLAME ROD2FLAME ROD3

THE CONNECTORS OF DUAL AND MULTIPLEARE INTERAPPLICABLE TO THE BODYCONNECTORS EACH OTHER.(RED)

On/Off

Switch

Junction

Box

Ground Screw

Wire

Connections

WARNING: Field wiring connections and electrical grounding must comply with localcodes, or in the absence of local codes, with the latest edition of the National Electrical Code,ANSI/NFPA 70, or in Canada, Canadian Electrical Code, CSA C22.1 Part 1.

!

20

Installing the water heater.Typical Installation

90° Elbow

1/4" Per Foot Downward Pitch

Wall Thimble

Vent Termination

To Hot Water

Faucet(s)

Air Relief

Valve

Discharge

Line(To Suitable Drain)

Pressure

Relief

Valve

Union

Drain Valve

6" Air Gap

Manual Gas

Appliance

Shut-off(supplied)

Sediment

Trap

Manual

Gas Supply Line

Shut-off

Valve

Union

Cap

Cold Water

Supply

Shut-off

Valve

Check

Valve

Vent Adapter

°F

PRIORITY

POWERON/OFF

Remote

Control

PowerSupplyCord

NOTICE: The National Fuel Gas Code (NFGC) mandates amanual gas shut-off valve: See (NFGC) for completeinstructions. Local codes or plumbing authorityrequirements may vary from the instructions or diagramsprovided and take precedent over these instructions.

21

For increased energy efficiency, use pipeinsulation. Please install the insulation,according to the illustrations above,

making sure to insulate all the way to thetop. Do not cover any drain or pressurevalve(s).

Do’s● Do check inlet gas pressure to ensure that it

is within the range specified on the ratingplate.

● Do provide adequate air for combustion andventilation as discussed in the InstructionManual and the National Fuel Gas Code(CAN/CGA B149 in Canada).

● Do maintain proper clearances tocombustibles as specified on the nameplate.

● Do ensure that the venting system complieswith the guidelines found in the InstructionManual and National Fuel Gas Code(CAN/CGA B149 in Canada).

Don’ts

● Don’t block or restrict Air Intake Openinglocated bottom left corner of the waterheater.

● Don’t remove the front cover unlessabsolutely necessary. This should only bedone after being examined by a qualifiedservice technician.

● Don’t install this product where standingwater may occur.

During Installation of this water heater...........

Hot and Cold Pipe Insulation Installation

Gas InletCheck Valve

Inlet Pipe

Cold Water

Hot

Water

Insulate all the

way to the top

Insulation BlanketsInsulation blankets, available to thegeneral public, for external use on gaswater heaters are not necessary. Thepurpose of an insulation blanket is toreduce the standby heat loss encounteredwith storage tank heaters. This waterheater does not store water making aninsulation blanket unnecessary.

The manufacturer’s warranty does notcover any damage or defect caused byinstallation, attachment or use of any type of energy saving or otherunapproved devices (other than thoseauthorized by the manufacturer) into, ontoor in conjunction with the water heater.

The use of unauthorized energy savingdevices may shorten the life of the waterheater and may endanger life and property.

The manufacturer disclaims anyresponsibility for such loss or injuryresulting from the use of suchunauthorized devices.

WARNING: If localcodes require externalapplication of insulationblanket kits themanufacturer’s instructionsincluded with the kit mustbe carefully followed.

!

NOTICE: The hot and coldpipes should be insulated asshown to provide additionalfreeze protection.


22

A Water Heater Location● Close to area of vent termination.

● Indoors and protected from freezing temperatures .

● Proper clearance from combustible surfacesobserved.

● Sufficient fresh air supply for proper operation of water heater.

● Air supply free of corrosive elements and flammable vapors.

● Provisions made to protect area from water damage.

● Sufficient room to service heater.

● Combustible materials, such as clothing, cleaning materials, rags, etc. clear of the heater and ventpiping.

● Water heater is properly attached to the wall.

B. Water Supply● Water supply has sufficient pressure.

● Air purged from water heater and piping.

● Water connections tight and free of leaks

● Water filter is clean and in place.

● Materials used are as instructed in this manual.

● Water pipes are insulated.

C. Gas Supply● Gas type matches rating plate.

● Gas supply pressure is sufficient for the water heater.

● Gas line equipped with shut-off valve, union and sediment trap.

● Approved pipe joint compound used.

● Soap and water solution used to check all connections and fittings for possible gas leak.

● Gas Company inspected installation (if required).

D. Relief Valve● Pressure Relief Valve properly installed and

discharge line run to open drain

● Discharge line protected from freezing.

E. Venting● Materials used are as instructed in the manual.

● Vent connector(s) pitched downward to termination (¼" per foot of length minimum) See page 12.

● Vent connector(s) securely fastened together with high temperature silicone (500°F) and air-tight.

● All vent runs are properly supported.

● Vent terminal is properly installed.

● Sufficient combustion air is available.

● Maximum and minimum vent lengths are observed.

F. Electrical Wiring

● Voltage matches rating plate.

● Water heater is properly grounded.

● Supply cord meets all local codes.

Installation Check List

23

Lighting the water heater.Before operating this water heater, be sure to read and follow the instructions on the label picturedbelow and all other labels on the water heater, as well as the warnings printed in this manual. Failure todo so can result in unsafe operation of the water heater resulting in property damage, personal injury,or death . Should you have any problems reading or following the instructions in this manual, STOP,and get help from a qualified person.

WARNING : If you do not follow these instructions exactly, a fire or explosion may result

causing property damage, personal injury or loss of life.

FOR YOUR SAFETY READ BEFORE OPERATING

1.STOP! Read the safety information above on this label.2.Turn off all electric power to the appliance.3.Do not attempt to light the burner by hand.4.Turn the Gas Shutoff Valve located on the outside of the unit clockwise to the "OFF" position.5.Wait five (5) minutes to clear out any gas. If you then smell gas, STOP! Follow "B" in the safety information above on this label. If you don't smell gas, go to the next step.6.Turn the Gas Shutoff Valve located on the outside of the unit counterclockwise to the "ON" position.7.Turn on all electric power to the appliance.8.If the appliance will not operate, follow the instructions "To Turn Off Gas To Appliance" and call your service technician or gas supplier.

TO TURN OFF GAS TO APPLIANCE 1.Turn off all electric power to the appliance if service is to be performed.

2.Turn the Gas Shutoff Valve located on the outside of the unit clockwise to the "OFF" position.

GAS SHUTOFF

VALVE

OPEN CLOSE

OPERATING INSTRUCTIONS

24

Time/Temperature Relationship in ScaldsWater Temperature Time To Produce a Serious Burn

120°F More than 5 minutes125°F 11/2 to 2 minutes130°F About 30 seconds135°F About 10 seconds140°F Less than 5 seconds145°F Less than 3 seconds150°F About 11/2 seconds155°F About 1 second

Table courtesy of Shriners Burn Institute

DANGER: There is ahot water scald potential if the temperature is set too high. Households withsmall children, disabled, orelderly persons may requirea 120°F. or lowertemperature setting toprevent contact with HOTwater.

!

Water Temperature SettingThe temperature of the water in the waterheater can be regulated by setting thetemperature on the front of the remotecontrol.

Safety factors should be considered whenselecting the water temperature setting ofthe water heater’s remote control.

The remote control was set at 100°Fbefore the water heater was shipped fromthe factory. This is the recommendedstarting point.

Water temperatures above 125°F cancause severe burns or death from scalding.

Be sure to read and follow the warningsoutlined in this manual and on the labellocated on the water heater.

Mixing valves are available for reducingpoint of use water temperature by mixinghot and cold water in branch water lines.Contact a licensed plumber or the localplumbing authority for furtherinformation. (See page 4 for more details.)

The chart below may be used as a guide indetermining the proper water temperaturefor your home.

Safety PrecautionsDo turn off manual gas shut-off valve if water heaterhas been subjected to over heating, fire, flood,physical damage or if the gas supply fails to shut off.

Do Not turn on water heater unless water and gassupplies are fully opened.

Do Not turn on water heater if cold water supplyshut-off valve is closed.

Do Not allow combustible materials such asnewspaper, rags or mops to accumulate near water heater.

Do Not store or use gasoline or other flammablevapors and liquids, such as adhesives or paint thinner,in vicinity of this or any other appliance. If such flammables must be used, open doors and windows for ventilation, and all gas burningappliances in the vicinity should be shut off includingtheir pilot lights, to avoid vapors lighting.

NOTICE: Flammable vapors can be drawn by aircurrents from surrounding areas to the water heater.

If there is any difficulty in understanding or followingthe Operating Instructions or the Care and Cleaningsection, it is recommended that a qualified person orserviceman perform the work.

Operating the water heater.

25

Water Temperature Setting…

Maximum water temperature occurs whilethe burner is on. To determine the watertemperature, turn on a hot water faucetand place a thermometer in the waterstream. Water temperature at the faucetmay vary depending on season and lengthof pipe from the water heater.

This water heater contains anelectronically controlled thermostat. Fromthe factory, the temperature range isbetween 100°F and 120°F.

The remote control is factory preset to100°F.

To turn the remote control ON or OFF,just press the POWER button.

To adjust the temperature to a requiredsetting , press the UP arrow temperaturebutton.

Pressing the UP or DOWN temperatureadjustment buttons will change thetemperature set point by 2°F.

The temperature set point on the remotecontrol cannot be increased above 112°Fwhen the hot water faucet is in the openposition.

Notice: The factory setting allowsoperating temperatures between 100°F and120°F. Temperatures of up to 140°F canbe achieved with the MAIN (UMC-117)(sold separately) remote control and a dipswitch adjustment. Contact the dealer,distributor, or Paloma to purchase theMAIN (UMC-117) remote control. Only

qualified service personnel should performthis adjustment. Only factory authorizedremote control(s) should be used.

The hottest temperature water will be atthe hot water faucet closest to the waterheater.

Always remember to test the watertemperature with your hand before use andremember that hotter water increases therisk of scald injury.

Always supervise young children or otherswho are incapacitated.

The water heater is equipped with a devicethat will shut off the gas supply to theburner if the water heater exceeds normaloperating temperatures. Refer to the(Before You Call For Service) sectionlocated near the back of this manual, orcontact your dealer.

WARNING: Should overheating occur orthe gas supply fail to shut off, turn off themanual gas control valve to the appliance.

If the water heater has been subjected tofire, flood or physical damage, turn off themanual gas shut-off valve(s), and do notoperate the water heater again until it hasbeen checked by qualified personnel.

Notice: The water heater may not operatewith a small water flow. In such case,increase the water flow. If water heater stilldoes not operate and hot water faucet iscompletely open, increase the temperaturesetting on the remote control.

!

°F

PRIORITY

POWERON/OFF

100 102 104 106 108 110 112 114 116 118 120 130* 140* °F

Higher (Hotter) Lower (Cooler)Tepid Hot Hotter Hottest

In Use Indicator(Lit during operation)

LED Display(Displays water temperature

and error codes)

Temperature

Adjustment

Buttons

Priority Indicator

ON/OFF

Indicator

*Requires the optional MAIN (UMC-117) remote control (Sold Separately).

NOTICE: If the BATHcontrol is turned on, thetemperature setting on theMAIN control cannot bechanged. The BATH control(s)will always have PRIORITYover the MAIN control.

26

Care and cleaning of the water heater.Routine Preventative MaintenanceProperly maintained, your water heaterwill provide years of dependable trouble-free service.

It is recommended that a periodicinspection of the burner, relief valve, airintake filter, water filter and ventingsystem should be made by servicepersonnel qualified in gas appliance repair

It is suggested that a routine preventivemaintenance program be established andfollowed by the user.

At least once a year, lift and release thelever handle on the pressure relief valve,located in the hot outlet piping of thewater heater, to make certain the valveoperates freely. Allow several gallons toflush through the discharge line to an opendrain.

NOTICE: If the pressure relief valve onthe hot water heater dischargesperiodically, this may be due to aproblem in the water system. Contactthe water supplier or your plumbingcontractor on how to correct this. DONOT plug the relief valve outlet.

Rapid closing of faucets or solenoidvalves in automatic water using appliancescan cause a banging noise heard in a waterpipe. Strategically located risers in thewater pipe system or water hammerarresting devices can be used to minimizethe problem.

Inspect the area around the water heater toensure a safe operating environment. Keepappliance area clear and free fromcombustible materials, gasoline, and otherflammable vapors and liquids.

Ensure the unit has not been damaged. Ifdamage or denting is present, contact aservice personnel to verify properoperation.

Check for any abnormal sounds duringnormal operation of the water heater.

All piping should be checked for gasand/or water leaks. Refer to page 11 ofthis manual for instructions on leaktesting.

The air intake and cold water supplyfilters should be cleaned monthly. Refer tothe “Housekeeping” section for furtherinformation.

DO NOT operate the water heater if youfeel something is wrong with the unit.

DO NOT allow children to operate orotherwise handle the unit.

Notice: After inspection, maintenance,and/or cleaning, ensure proper operationby turning on a hot water faucet.

HousekeepingBefore performing Housekeeping tasks tothis water heater, turn the unit off anddisconnect the power supply.Vacuum around the water heater for dust,dirt and lint on a regular basis. Clean the water heater and remote controlby using a damp soft cloth with a fewdrops of mild detergent and gently wipingthe surfaces of the unit. Wipe anyremaining moisture with a dry soft cloth.To ensure sufficient ventilation andcombustion air supply, proper clearancesmust be maintained.

DO NOT block or obstruct the air intakeopening located at the lower left corner ofthe water heater. A minimum of 12” isrequired between this combustion air inletopening and any obstruction.

The Air Intake and Water filters should becleaned on a monthly basis.

HOW TO CLEAN THE WATER FILTER:

● Make sure the unit is OFF and theelectrical power supply has beendisconnected.

● Turn the water supply OFF to theheater.

● Unscrew the water filter, and slide thefilter out.

● DO NOT tap the filter as it maydeform and/or damage the filter.

● To remove severe dust, use a soft brushand wash with running water.

● Return the filter to the water heater andscrew in the filter.

● Turn the electrical power supply andcold water supply ON to the waterheater.

DANGER: Beforemanually operating therelief valve, make certainno one will be exposed tothe danger of the hot waterreleased by the valve. Thewater may be hot enough tocreate a scald hazard. Thewater should be releasedinto a suitable drain toprevent injury or propertydamage.

!

DANGER: Combustiblematerials, such as clothing,cleaning materials, orflammable liquids, etc., mustnot be placed against or nextto the water heater.

!

DANGER: Failure toperform the recommendedRoutine PreventativeMaintenance can harm theproper operation of thiswater heater, which cancause carbon monoxidedangers, excessivehot water temperatures andother potentially hazardousconditions.

!

DANGER: Hotter waterincreases the potential forHot Water Scalds.

!

DANGER: Shock Hazard

Make sure the electricalpower to the water heater isoff to avoid potential seriousinjury or damage tocomponents.

!

27

Venting System InspectionThe venting system should be inspectedannually to ensure all of the vent sectionsare secure and air-tight.

It is recommended that qualified servicepersonnel familiar with Category IIIventing inspect the venting system.

Check vent connection joint sections witha solution of soapy water to assure air-tightness while the unit is operating.

Bubbles around a joint connectionindicates a seal leak. Refer to page 12 forvent sealing instructions.

DO NOT operate the unit if vent systemshows signs of leaking exhaust.

Check to make sure that the Air Intake andthe vent terminal have not been blocked orcontain debris.

Burner InspectionVisually inspect the main burnersannually.

Through the sight glass, inspect the burnerflame with the main burner off and inspectthe main burner while firing.

If any unusual burner operation is noted,the water heater should be shut off untilqualified service assistance can beobtained.

CAUTION: For your safety, cleaning ofthe main burner should be performed onlyby qualified service personnel.

For cleaning, a vacuum cleaner can beused on the burner.

!

Proper burner pattern.

Care and cleaning of the water heater.

Vacation and Extended Shut-DownIf the water heater is to remain idle for anextended period of time, the power andwater to the appliance should be turnedoff.

The water heater and piping should bedrained if they might be subjected tofreezing temperatures.

After a long shut-down period, the waterheater’s operation and controls should bechecked by qualified service personnel.

NOTICE: Refer to the FreezeProtection Section on page 28.

Housekeeping continuedCLEANING THE AIR INTAKE FILTER:


● Unscrew the holding screw to the rightof the filter, and slide the filter down.

● Using a vacuum cleaner, remove anyloose dust particles. DO NOT tap thefilter as it may deform and/or damagethe filter.

● To remove severe dust, use a soft brushand wash with running water.

● Allow the filter to dry completelybefore reinstalling the filter on thewater heater. Be sure to secure the filterby lining the guide tab in the hole andtightening the screw.

CLEANING THE WATER HEATERAND REMOTE CONTROL(S):


● DO NOT scrub the appliance with abrush.

● Use only mild soapy water, othercleaners may damage the surface of thewater heater.

● DO NOT remove any label includingthe rating plate while cleaning orservicing.

● DO NOT splash water on the remotecontrols when cleaning.

DANGER: DO NOT attemptto operate the water heaterwithout the air intake filter. DONOT alter the proving switch toforce the unit to operate withoutthe air intake filter.

Notice: The water heater maynot work if the air intake filteris severely clogged.

!

Blue Flame

28

Draining the Water Heater

Freeze ProtectionWhere the water heater may be exposed tofreezing conditions, even for a shortperiod of time, be sure to drain all waterfrom the unit as instructed above.

Exposure to freezing conditions can occurfrom down draft of venting system orfrom installation in areas exposed to coldair.

The water heater is equipped with a FreezeProtection Electric Heater. As long as theelectricity is supplied to the water heater, itprevents freezing inside the water heater upto an ambient temperature of approximatelyminus 30°F (without wind-chill factor)

This device only protects the internalcomponents of the water heater. It doesNOT protect piping and valves. Therefore,piping and valves should be wrapped withinsulation material as instructed on page 21.

Another method of freeze prevention is byrunning a small volume of water. Runningwater will protect the water heater, pipingand valves.

Follow the steps below to ensure properwater flow through the water heater andpiping:

Turn off the switch on the remotecontrol.

Close the gas shut-off valve.

Open the hot water faucet slightly untila stream of approximately 1/8” isflowing. Be sure to check the flowperiodically.

WARNING: Failureto drain the waterheater can cause seriousdamage to the waterheater as well aspersonal injury.

!

Below are instructions for draining waterout of the water heater.

Turn off the switch on the remotecontrol.

Close the gas shut-off valve(s).

Unplug the power supply cord (ordisconnect breaker) at least 10 secondsafter step #1.

Open all hot water faucets. Beforeproceeding to the next step, make surethat COLD water is coming out of allhot water faucets.

Close the water shut-off valve.

Using a suitable container to catchwater, remove the water filter fromheater. Attach a garden hose to thedrain valve installed in the hot wateroutlet line and direct the stream ofwater to a suitable drain where it willcause no damage. Approximately 21ozof water will be drained. Leave waterheater as is until next use.

To put the water heater back intooperation after draining, follow the stepsbelow.

Reinstall the drain plug and water filter.Close the hot water outlet drain valve.

Open the water shut-off valve and closeagain after making sure that watercomes out from hot water faucets.(This step is to remove air from thewater lines.)

Plug into an electrical outlet, fully openthe gas shut-off valve and the watershut-off valve.

NOTICE: The water heater may notoperate unless the above procedure isfollowed correctly.

To Hot Water

Faucet(s)

°F

PRIORITY

POWERON/OFF

Draining the water heater

WARNING: Failureto follow theseinstructions whiledraining the waterheater can cause seriousdamage to the waterheater as well aspersonal injuryincluding scalding.

!

NOTICE: DO NOTunplug the electricpower supply cord forfreeze protection.

Care and cleaning of the water heater.

29

Before You Call For Service…

Problem Possible Cause

� Check shutoff valve and open fully.

Hot water faucet is not fully opened. �

Water piping is frozen. � Allow piping to thaw

No electricity or water supply is cut off. �

Unit is not "ON". �

The temperature may be set too low. � Increase the temperature setting.

Mixing Valve malfunction (if applicable). � Check and replace if necessary.

� See instructions for Error Code and if

required, contact a dealer for service.

The temperature may be set too low. � Increase the temperature setting.

The gas valve is not fully opened. � Check and open the gas valve fully.

Water too hot. The temperature is set too high. � Decrease the temperature setting.

Water shutoff valve is not fully opened. � Check shutoff valve and open fully.

Small amount of water has been heated. � Allow more water to flow.

�

Turn the unit "ON" by the button on the

remote control.

Not enough or no hot

water.

Water not hot

enough.

Error code displayed on remote controller.

Water shutoff valve is not fully opened.

Open hot water faucet completely. (The

main burner goes off when incoming

water volume is inadequate.)

Check that proper power is being supplied

and/or water supply is adequate.

Fan continues to

rotate after hot water

faucet is closed.

Normal operation. There is no need to

call for service.

This function is to supply hot water when

the hot water faucet is reopened.

What To Do

Troubleshooting TipsSave time and money! Review the charts on the following pages first and you may not need to call for service.

This water heater incorporates a combustion shut off device that shuts the operation of the water heaterdown if undesirable combustion conditions occur. Such as the presence of a blockage of the combustionair inlet vent. Please contact a Qualified Service Technician if this occurs.

CAUTION: For your safety DO NOT attempt repair of electrical wiring, gas piping, remote control, burners, ventconnectors or other safety devices. Refer repairs to qualified service personnel.!

CAUTION: Make certain power to water heater is “OFF” before removing protective cover FOR ANY REASON.!

CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper anddangerous operation. VERIFY PROPER OPERATION AFTER SERVICING.!

30

Error Code Guide

Error Code Possible Cause

�

� Open the Gas Shutoff Valve completely.

�

�

�

�

�

�

�

�

� Avoid direct contact from steam.

Air Intake filter is clogged. � Clean the Air Intake filter.

13

1L

�

�

Please contact a dealer for service.

Contact a dealer for service.

Air shortage may be caused by too

much steam in the unit.

If the error code is still displayed after

taking the above steps.

Water heater has build up of lime

deposites.

The air inside the room may be

contaminated due to long use of a

fireplace or space heater.

Open a window or vent to keep the air

inside the room fresh.

Lower the level of the ventilation of other

equipment or appliances.

Heavy ventilation by other equipment or

appliances causing the lack of air intake

to the water heater.

Air intake of the unit and/or vent

termination may be blocked.

Remove any obstructions of the air intake

or vent termination.05

Ventilator or other vents of the room

may be blocked.

Clean the air intake of any dust or grease

build up.

Air intake filter may not be attached, or

may not be firmly in place.

See the section "Cleaning the Intake

Filter".21

00

The hot water faucet is not opened

enough.

Open the faucet more to secure enough

volume.

The method of restarting the unit after

draining the water from it was not

performed in sequence.

See the section "Draining the Water

Heater"

What To Do

11

The operation automatically stops when

used for an hour continuously.

Close the hot water faucet once. (The

water heater can then be used.)

The Gas Shutoff Valve is not opened

completely.

Gas Service has been interrupted.

LP Gas is running low. (LP models only)

Contact Gas Utility Company.

Fill up LP Gas container or replace

with a new cylinder of LP Gas.

12

(Every 60 seconds

you hear an alarm or

when the faucet is

closed, the alarm

stops.)

15

16

When an error code is displayed:● Close the hot water faucet, turn off the switch on the

remote control.

● Wait for about 5 minutes before turning the switch onagain.

● Open the hot water faucet.

If the error code remains shown:

● Close the hot water faucet and turn off the switch on theremote control.

● Take the proper action shown below and attemptoperation of the appliance again.

If the error code is still shown:

● Turn off the hot water faucet and turn off the switch onthe remote control.

● Take note of the error code displayed and contact yourPaloma dealer or distributor for service.

Notice: If an error code other than those listed below isdisplayed, immediately turn off the hot water faucet, takenote of the error code, turn off the switch on the remotecontrol and contact your Paloma dealer or distributor forservice.

CAUTION: For your safety DO NOT attempt repair of gas piping, remote control, burners, vent connectors or othersafety devices. Refer repairs to qualified service personnel.!

CAUTION: Make certain power to water heater is “OFF” before removing protective cover FOR ANY REASON.!

CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper anddangerous operation. VERIFY PROPER OPERATION AFTER SERVICING.!

SPARK UNIT

ACS-201X

A.C. 100V

0401

ON

1 2 3 4

DIP

1

ON

OF

F

1 2 3 4

SW1 SW2

SW3

Gas Valve

Assembly

Heat Exchanger

Thermistor

Heat Exchanger

Outlet

Thermistor

Burner

Assembly

(with ODS)

Blower

Motor

Flame Rod/

Electrodes

Transformer

Water Flow

Solenoid

Inlet Thermistor

Ignitor

PC Board (PCB)

Burner Assembly

Cover(w/ sight glass)

Water Filter

5A (250V) Fuse

Unit Cover Panel

(2) 3A (250V) Fuses

(not shown)

Proving Switch

31

Replacement Parts.For models using natural or LP gas.

Instructions For Placing a Parts OrderAddress parts orders to the distributor orstore from where the water heater waspurchased.

All parts orders should include:

The model and serial number of thewater heater from the rating plate.

Specify type of gas (natural or LP) asmarked on the rating plate.

Part description (as noted below) andnumber of parts desired.

CAUTION: For your safety, DO NOT attempt repair of electrical wiring,gas piping, burners, vent connectors or other safety devices. Refer repairs to qualified service personnel.

!

WARNING: For yoursafety, DO NOT attempt todisassemble this unit forany reason.

!

LIMITED WARRANTYFor the PALOMA Gas Water Heater Models listed on the front of this manual.

GENERALThis Limited Warranty is only available to the original owner of this water heater. It is not transferable. Residentialis defined as a single family residence dwelling occupied by the original owner.Paloma Industries, Inc. (Paloma) warrants this Paloma water heater, and its component parts, to be free fromdefects in materials and workmanship, under normal use and service, for the Applicable Warranty Period. At itsoption, Paloma will replace the defective component part(s), in accordance with the terms of this Limited Warranty,if it falls in normal use and service during the Applicable Warranty Period. The replacement component part(s)must be Paloma component Part(s). The replacement component part(s) will be warranted only for the unexpiredportion of the original component part’s Applicable Warranty Period.

EFFECTIVE DATEThe Effective Date of warranty coverage (or the beginning of the Applicable Warranty Periods) is the date ofpurchase of this water heater, if properly documented. Otherwise, it is the date of manufacture of the water heaterplus ninety (90) days.

APPLICABLE WARRANTY PERIODSHeat Exchanger:The Applicable Warranty Periods are ten (10) years from the Effective Date for a leaking heat exchanger if thewater heater is installed in a Residential application and is used as a normal residential usage with potable water. Ifthe water heater is used as a part of a circulating system, or if it is used in other than a single family residencedwelling, then the Applicable Warranty Periods will be limited to one (1) year from the Effective Date.

All Other Component Parts:All other component parts are three (3) years from the Effective Date if the water heater is installed in a Residentialapplication and is used as a normal residential usage with potable water. If the water heater is used as a part of acirculating system, or if it is used in other than a single residence dwelling, then all of the other component partswarranty will be limited to one (1) year from the Effective Date.

WARRANTY EXCLUSIONS

This Limited Warranty will not cover:

a) Service trips to your home to teach you how to install, use, or maintain this water heater or to bring the waterheater installation into compliance with local building codes and regulations.

b) Damages, malfunctions or failures resulting from failure to install the water heater in accordance with applicablebuilding codes/ordinances or good plumbing and electrical trade practices or defective fittings.

c) Damages, malfunctions, or failures resulting from improper installation or failure to operate and maintain thewater heater in accordance with the manufacturer’s instructions provided, including outside of recommendedwater quality levels as listed in the chart below.

d) Performance problems caused by improper sizing of the water heater or the gas supply line, the ventingconnection, or combustion air openings.

e) Damages, malfunctions, or failures caused by improper conversion from natural gas to LP gas or LP gas to natural gas fuel source.

f) Damages, malfunctions, or failures caused by operating the water heater with any parts removed or with the water heater modified, altered, or unapproved parts installed.

g) Damages, malfunctions, or failures caused by abuse, accident, fire, flood, freeze, lightning, acts of God, misuse,alteration, and the like.

h) Heat Exchanger failures (leaks) caused by operating the water heater in a corrosive or contaminated atmosphere.i) Damages, malfunctions, or failures caused by operating the unit at water temperatures exceeding the maximum

setting of the operating, or high limit control.j) Heat Exchanger failures caused by operating the water heater when it is not supplied with potable water at all

times.k) Damages, malfunctions , or failures caused by subjecting the heat exchanger to pressures, or firing rates, greater

than those shown on the rating plate.

32

pH TDS (TotalDissolved Solids)

Free CarbonDioxide (CO2)

TotalHardness

Aluminum Chlorides Copper Iron Manganess Zinc

6.5 to 8.5 Up to 500 mg/L Up to 15mg/LUp to 200

mg/LUp to 0.2

mg/LUp to 200

mg/LUp to 1.0

mg/LUp to 0.3

mg/LUp to 0.05

mg/LUp to 1.0

mg/L

l) Damages, malfunctions, or failures resulting from the use of any attachment, including any energy saving device,not authorized by Paloma.

m) Units installed outside the United States of America and Canada.n) Units removed from the original installation location.o) Units that have had their rating plates removed. A water heater should not be operated if the rating plate is

removed.p) Units installed in any spa or pool heating, recreational vehicles, boats and other watercraft.q) If the water heater is installed outdoors.r) Damages, malfunctions, or failures caused by lime or mineral build up.s) Noise, odors or discolored water.

LABOR, SHIPPING, AND PROCESSING COSTS

This Limited Warranty does not cover any labor expenses for service, repairs, reinstallation, permits, or removaland disposal of the failed water heater, or defective component part(s). All such expenses are your responsibility.Paloma will pay the transportation costs for an “In-warranty” replacement component part(s), to a convenientdelivery point (selected by Paloma) near the place where the original water heater, or original component part(s), islocated: such as a local Paloma water heater distributor. You must pay any local freight charges, including the costof returning the defective component Part(s) to a convenient shipping location (selected by Paloma): such as a localPaloma distributor.Paloma does not authorize, recommend, or receive any benefit from any claims processing or similar fees chargedby others to process warranty claims for any Paloma water heater or component part(s). Paloma will not reimburseany party for these, or any other, fees not specifically covered in this Limited Warranty document.

HOW TO OBTAIN WARRANTY CLAIM ASSISTANCE

You may make a warranty claim by calling the local Paloma water heater distributor or Paloma Industries, Inc. at2151 Eastman Avenue, Oxnard, CA 93030, Telephone number (805) 278-5499 (Call collect). If, upon reasonableinspection of parts, Paloma determines that a defect exists, Paloma shall furnish replacement part(s) in fullsettlement of its warranty obligations. Purchasers shall be required to return, at purchasers’ expense, the defectivepart(s) to the local Paloma water heater distributor or Paloma to permit inspection. Paloma shall not be responsiblefor any shipment or labor costs incurred in making warranty claims or repairs. To receive warranty compensationfor an “In-warranty” defective component part, you must provide the local Paloma water heater distributor orPaloma with: the defective component part; the complete model number and the complete serial number of thePaloma water heater from which the defective component part was removed; and the date the defective componentpart failed. You are also required to provide documentary proof of the date of purchase of the Paloma water heaterfrom which the defective part was removed to establish the “In-warranty” status of the defective component part.

EXCLUSIVE WARRANTY - LIMITATION OF LIABILITY

This Limited Warranty is the only Warranty for this unit given by Paloma. No one is authorized to make any otherwarranties on behalf of Paloma. ANY IMPLIED WARRANTIES, INCLUDING MERCHANTABILITY, ORFITNESS FOR A PARTICULAR PURPOSE, SHALL NOT EXTEND BEYOND THE APPLICABLEWARRANTY PERIODS SPECIFIED ABOVE. PALOMA’S SOLE LIABILITY, WITH RESPECT TO ANYDEFECT, SHALL BE AS SET FORTH IN THIS LIMITED WARRANTY, AND ANY CLAIMS FOR DIRECT,INDIRECT, SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGE FROMWATER LEAKAGE) ARE EXCLUDED. THE HEATER IS NOT DESIGNED NOR INTENDED FOR USE INANY SPA OR POOL HEATING SYSTEMS. Some states do not allow limitations on how long an impliedwarranty lasts, or for the exclusion of incidental or consequential damages, so the above limitations or exclusionsmay not apply to you.

This Limited Warranty gives you specific legal rights, and you may also have other rights, which vary from state tostate.

Please fill the enclosed warranty card out and mail it to Paloma within fourteen (14) days of the date of purchase.

Paloma Industries, Inc.2151 Eastman Avenue, Oxnard, CA 93030Telephone Number: (805) 278-5499 (Call collect)

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SPECIFICATIONS (Approx.)Model PH-28RIFSN Indoor (Natural Gas); PH-28RIFSP Indoor (L. P. Gas)Rated Gas Input(Btu/Hr.)

19,000 (Min.)199,900 (Max.) (Modulating)

Installation Indoor Wall Mounting Type, Side wall venting for positive pressure and possiblecondensation. For vertical venting ask Paloma dealer.

Dimensions (inches) 14 7/8 (W) x 25 3/8 (H) x 11 1/8 (D)Net Weight (lbs) 55Working Water Pressure 14 psi (Min.); 150 psi (Max.)Min. Water Flow 0.66 Gallons/MinuteMax. Flow Rate 7.4 GPM at 45ºF Temperature Rise, 23 psiGas Connection 3/4” NPT Female (With Supplied Gas Shutoff Valve)Water Connection 3/4” NPT MaleManifold Pressure (in. w.c.) Contact your distributor, dealer whom you purchased or PalomaVent Size 4” Special VentingEfficiency Rating 84%Energy Factor 0.82Inlet Gas Pressurebefore water heater

Natural Gas: Min.: 4.0”w.c.; Max.: 10.5”w.c. (Do not exceedL.P. Gas: Min.: 8.0”w.c.; Max.: 14.0”w.c. maximum pressure.)

Hot Water SupplyFactory Setting 100ºF (With Supplied USC1-117)Adjusting Range Bath Control: 100ºF ~ 120ºF

Main Control: 100ºF ~ 120ºF (140ºF)Max. Setting Up to 140ºF (With Main Control & Dip Switch)

CombustionSystem Fan Assisted CombustionMain Burner Bunsen Type BurnerIgnition Electric Continuous Sparking Ignition

Electric PortionElectric Rating 120 VAC/60Hz, Less than 2 AmpsWire 3 Pin Power Supply Cord 10 FeetFuse 3A Fuse x 2Fan Motor Turbo Fan

Safety DevicesOxygen Depletion Safety Device Sensing BurnerOverheat Limiter for Heat Exchanger

Film Type Overheat Limiter for Entire Heat Exchanger

Flame Failure Safety Device Flame Rod TypeMax. Vent Length 37 Feet 6 Inches Three 90 Degree ElbowsFreeze Protection Minus 30ºF (Without Wind-Chill Factor)Remote Control One Digital First Bath Remote Control (USC1-117) is included.Optional Accessory Digital Second Bath Remote Control (USC2-117)

Digital Main Remote Control (UMC-117)

Hot Water Flow Rate and Temperature RiseTemperature Rise (ºF) 45 50 60 70 80 90 100Water Flow Rate (GPM) 7.4 6.7 5.6 4.8 4.2 3.7 3.4

Special Venting (Adapter, vent pipe, elbow, vent terminal, etc.) should be UL 1738 Certified Category III Stainless Steel Venting Material (e.g. AL29-4C) in order to avoid damage from possible condensation.“B” vent is not permitted.Since we are constantly improving our products, all specifications are subject to change without notice.

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Paloma Industries, Inc.2151 Eastman AvenueOxnard, CA 93030

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