Canatal M-Series IOM

CANATAL

M SERIES AIR CONDITIONERS

Installation, Operation andMaintenance Manual

Intelligent Precision Air Conditioning

Modular Chilled Water

Modular Direct Expansion(R4-2003)

IOM-M SERIES/R4-2003

TABLE OF CONTENTS

1. Canatal - company profile 1

1.1 Quality statement

2. M Series introduction 2

3. Production selection guide 3

3.1 Nomenclature3.2 Chilled Water models3.3 Direct expansion models

4. Installation 8

4.1 Site Preparation4.2 Unit Delivery4.3 Locations Considerations4.4 Unit Handling4.5 Piping - General4.6 Air inlet and outlet openings4.7 Plenum installation - general4.8 High efficiency filters4.9 Electrical connections

5. Refrigerant pipework installation 12

5.1 Pipework installation5.2 Recommended pipe size for remote condenser5.3 Evacuation5.4 Charging5.5 Fan speed control system5.6 Head pressure control system

6. Auxiliary piping installation 19

6.1 Chilled water / water-glycol pipework6.2 Condensate drain line6.3 Humidifier connections (optional)6.4 Hot water reheat (optional)

7. Electrical installation 20

7.1 Start-up procedure7.2 Automatic restart

8. Operation 22

8.1 Microprocessor controls8.2 Variable frequency drive - description8.3 Variable frequency drive - adjustment8.4 Humidifier - general8.5 Humidifier commissioning

i

M Series - Installation, Operation and MaintenanceCANATAL

9. Maintenance 26

9.1 General service and inspection9.2 Regular inspection9.3 Sensor calibration check9.4 Preventive maintenance: Quarterly

10. Corrective Maintenance 33

10.1 Air filters - renewal10.2 Humidifier - steam bottle renewal

11. Installation Data 34

11.1 Chilled water cooled11.2 Direct expansion

ii

M Series - Installation, Operation and Maintenance


CANATAL


1. Canatal - company profile

Incorporated in 1987, Canatal International Inc. is a wholly owned subsidiary of Analogue Holdings Ltd, andis a member of a worldwide group of companies dedicated to the research, design, manufacture andapplication of precision air conditioning systems, building automation and environmental engineering.

Canatal has drawn on this international base ofexperience in developing its exceptional M Seriesprecision air conditioning system. Extensive andongoing research and development has resulted inthe market's most advanced and dependableproducts, designed to accomplish the company'smission of providing a worry-free environment for"mission-critical" applications.

Canatal produces a wide range of precision airconditioning products for floor, ceiling, or wallmounted operations. These products are ideallysuited for telecommunication centers, computerrooms and other high-tech facilities.

Canatal's state-of-the-art microprocessortechnology allows each unit to interpretenvironmental conditions and adjust them asrequired.

Canatal's modern manufacturing and product development facility is located in Canada's leading hightechnology manufacturing area near Toronto, Ontario. Innovation is the heart and soul of the company'sproduct development laboratory, where engineers incorporate new ideas while building on past customerexperience. From the engineers who design the products, to the shipper who sends the products to its finaldestination, all our employees are focused and committed to the success of our customers.

1.1 Quality Statement

Canatal is an ISO-9001 registered company, therefore quality and continuous improvement is assured. EachCanatal system undergoes complete functionality testing before leaving the plant, guaranteeing optimumperformance even under the most demanding conditions and all Canatal products comply fully withEuropean and North American directives concerning mechanical, electrical and electromagnetic safety. Theoutstanding reliability incorporated in all Canatal products hasresulted in the extensive use of its precision air conditioningsystems by leading companies and organizations throughout theworld. These include Telecommunication OEM's and serviceproviders; Information Technology OEM's; Financial Services;Government; Aviation; Broadcast; Health Sciences; Utilities andvarious industrial corporations.

We thank you for joining this growing group of satisfiedcustomers by contacting your Canatal representative, or visit ourweb site at www.canatal.com.

1


2. M Series

The Canatal M SERIES is a range of high efficiency modular close control air conditioning units. The rangeincorporates chilled water and direct expansion units in a range of configurations, see below.

The range is designed to provide maximum energy efficiency, maximum reliability with minimum runningcosts. This is achieved using high SHR cooling coils, backward curved radial plug fans with external directdrive motors and high efficiency scroll compressors.

The M SERIES offers a comprehensive range of standard features, accessories and optional featuresenabling the product to be specified to meet the demands of precision air conditioning applicationsworldwide.

2.1 Configurations

2

M Series - Installation, Operation and Maintenance CANATAL


Figure 1. Downflow - Top Return Figure 2. Upflow - Front Return

Figure 3. Upflow - Rear Return Figure 4. Upflow - Bottom Return


3. Product Selection Guide

3.1 Nomenclature

3


Figure 5. Nomenclature

3.2 Chilled water models

Chilled Water Cooled Units

Downflow Model: MCD01 MCD02 MCD03 MCD04 MCD05 MCD06 MCD07 MCD08 MCD09 MCD10 MCD11 MCD12

Upflow Model: MCU01 MCU02 MCU03 MCU04 MCU05 MCU06 MCU07 MCU08 MCU09 MCU10 MCU11 MCU12

Length mmLength in.

81031.89

81031.89

81031.89

81031.89

81031.89

157461.97

157461.97

157461.97

233892.05

233892.05

3102122.13

3102122.13

Depth mmDepth in.

66326.10

66326.10

66326.10

81031.89

81031.89

81031.89

810

31.89

81031.89

81031.89

81031.89

81031.89

81031.89

Height mmHeight in.

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

Footprint m2

Footprint ft2

0.545.78

0.545.78

0.545.78

0.667.06

0.667.06

1.2813.72

1.2813.72

1.2813.72

1.8920.38

1.8920.38

2.5627.05

2.5627.05

Table 1

3.3 Direct expansion models

Air Cooled Units

DownflowModels:

MAD01 MAD02 MAD03 MAD04 MAD05 MAD06 MAD06 MAD07 MAD07 MAD08 MAD08 MAD09 MAD10 MAD11

Upflow Models: MAU01 MAU02 MAU03 MAU04 MAU05 MAU06 MAU06 MAU07 MAU07 MAU08 MAU08 MAU09 MAU10 MAU11

No. of circuits 1 1 1 1 1 1 2 1 2 1 2 2 2 2

Length mmLength in.

81031.9

81031.9

81031.9

121047.64

121047.64

197477.22

197477.22

197477.22

197477.22

197477.22

197477.22

2738107.79

2738107.79

3502137.87

Depth mmDepth in.

66326.10

66326.10

66326.10

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

Height mmHeight in.

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

Footprint m2

Footprint ft2

0.545.78

0.545.78

0.545.78

0.9810.55

0.9810.55

1.6017.22

1.6017.22

1.6017.22

1.6017.22

1.6017.22

1.6017.22

2.2223.88

2.2223.88

2.8430.54

Table 2

Water Cooled Units

DownflowModels:

MWD01 MWD02 MWD03 MWD04 MWD05 MWD06 MWD06 MWD07 MWD07 MWD08 MWD08 MWD09 MWD10 MWD11

Upflow Models: MWU01 MWU02 MWU03 MWU04 MWU05 MWU06 MWU06 MWU07 MWU07 MWU08 MWU08 MWU09 MWU10 MWU11

No. of circuits 1 1 1 1 1 1 2 1 2 1 2 2 2 2

Length mmLength in.

8103.19

8103.19

8103.19

120047.64

120047.64

196477.22

196477.22

196477.22

196477.22

196477.22

196477.22

2728107.79

2728107.79

3478137.87

Depth mmDepth in.

66326.10

66326.10

66326.10

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

Height mmHeight in.

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

Footprint m2

Footprint ft2

0.535.78

0.535.78

0.535.78

0.9710.55

0.9710.55

1.5917.22

1.5917.22

1.5917.22

1.5917.22

1.5917.22

1.5917.22

2.2123.88

2.2123.88

2.8230.54

Table 3

4




Glycol Cooled Units

DownflowModels:

MGD01 MGD02 MGD03 MGD04 MGD05 MGD06 MGD06 MGD07 MGD07 MGD08 MGD08 MGD09 MGD10 MGD11

Upflow Models: MGU01 MGU02 MGU03 MGU04 MGU05 MGU06 MGU06 MGU07 MGU07 MGU08 MGU08 MGU09 MGU10 MGU11

No. of circuits 1 1 1 1 1 1 2 1 2 1 2 2 2 2

Length mmLength in.

810

31.9

810

31.9

81031.9

120047.64

1200

47.64

196477.72

196477.72

196477.72

196477.72

196477.72

196477.72

2728107.79

2728107.79

3478137.87

Depth mmDepth in.

66326.10

66326.10

66326.10

81031.9

810

31.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

Height mmHeight in.

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

Footprint m2

Footprint ft2

0.535.78

0.535.78

0.53

5.78

0.97

10.55

0.9710.55

1.5917.22

1.5917.22

1.5917.22

1.5917.22

1.5917.22

1.5917.22

2.2123.88

2.2123.88

2.8230.54

Table 4

Free Cooling Units

Downflow Models: MFD01 MFD02 MFD03 MFD04 MFD05 MFD06 MFD06 MFD07 MFD07 MFD08 MFD08 MFD09 MFD10 MFD11

Upflow Models: MFU01 MFU02 MFU03 MFU04 MFU05 MFU06 MFU06 MFU07 MFU07 MFU08 MFU08 MFU09 MFU10 MFU11

No. of circuits 1 1 1 1 1 1 2 1 2 1 2 2 2 2

Length mmLength in.

81031.9

81031.9

81031.9

121047.64

121047.64

197477.71

197477.71

197477.71

197477.71

197477.71

197477.71

2738107.79

2738107.79

3502137.87

Depth mmDepth in.

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

Height mmHeight in.

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

Footprint m2

Footprint ft2

0.667.06

0.667.06

0.667.06

0.9810.55

0.9810.55

1.617.22

1.617.22

1.617.22

1.617.22

1.617.22

1.617.22

2.2223.90

2.2223.90

2.8430.57

Table 5

5


Air Cooled Dual Source Units

DownflowModels:

MDD01 MDD02 MDD03 MDD04 MDD05 MDD06 MDD06 MDD07 MDD07 MDD08 MDD08 MDD09 MDD10 MDD11

Upflow Models: MDU01 MDU02 MDU03 MDU04 MDU05 MDU06 MDU06 MDU07 MDU07 MDU08 MDU08 MDU09 MDU10 MDU11

No. of circuits 1 1 1 1 1 1 2 1 2 1 2 2 2 2

Length mmLength in.

810

31.9

810

31.9

81031.9

121047.84

121047.84

197477.71

197477.71

197477.71

197477.71

197477.71

197477.71

2738107.79

2738

107.79

3502137.87

Depth mmDepth in.

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

Height mmHeight in.

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

Footprint m2

Footprint ft2

0.667.06

0.667.06

0.667.06

0.9810.55

0.9810.55

1.617.22

1.617.22

1.617.22

1.617.22

1.617.22

1.617.22

2.2223.90

2.2223.90

2.8430.57

Table 6

Water Cooled Dual Source Units

DownflowModels:

MHD01 MHD02 MHD03 MHD04 MHD05 MHD06 MHD06 MHD07 MHD07 MHD08 MHD08 MHD09 MHD10 MHD11

Upflow Models: MHU01 MHU02 MHU03 MHU04 MHU05 MHU06 MHU06 MHU07 MHU07 MHU08 MHU08 MHU09 MHU10 MHU11

No. of circuits 1 1 1 1 1 1 2 1 2 1 2 2 2 2

Length mmLength in.

810

31.9

810

31.9

81031.9

121047.84

121047.84

197477.71

197477.71

197477.71

197477.71

197477.71

197477.71

2738107.79

2738

107.79

3502137.87

Depth mmDepth in.

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

Height mmHeight in.

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

Footprint m2

Footprint ft2

0.667.06

0.667.06

0.667.06

0.9810.55

0.9810.55

1.617.22

1.617.22

1.617.22

1.617.22

1.617.22

1.617.22

2.2223.90

2.2223.90

2.8430.57

Table 7

6




Glycol Cooled Dual Source Units

DownflowModels:

MED01 MED02 MED03 MED04 MED05 MED06 MED06 MED07 MED07 MED08 MED08 MED09 MED10 MED11

Upflow Models: MEU01 MEU02 MEU03 MEU04 MEU05 MEU06 MEU06 MEU07 MEU07 MEU08 MEU08 MEU09 MEU10 MEU11

No. of circuits 1 1 1 1 1 1 2 1 2 1 2 2 2 2

Length mmLength in.

810

31.9

810

31.9

81031.9

121047.84

121047.84

197477.71

197477.71

197477.71

197477.71

197477.71

197477.71

2738107.79

2738

107.79

3502137.87

Depth mmDepth in.

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

81031.9

Height mmHeight in.

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

196777.44

Footprint m2

Footprint ft2

0.667.06

0.667.06

0.667.06

0.9810.55

0.9810.55

1.617.22

1.617.22

1.617.22

1.617.22

1.617.22

1.617.22

2.2223.90

2.2223.90

2.8430.57

Table 8

7



4. Installation

4.1 Site Preparation

In order to maximize operating efficiency and performance, the following areas should be observedat the site-planning stage:

- The room should be surrounded with a vapour seal to eliminate moisture migration through thebuilding structure. Windows should be sealed and at least double-glazed to prevent sweating.All door jambs should fit tightly and should not have any grilles in them. Polyethylene film typeceiling, vinyl wallpaper or plastic based paint on the walls and slabs are recommended tominimize absorption and transmission of moisture into the room.

- Owing to a generally small population, a typical room should have fresh air kept at only about5% of the re-circulated air. This provides enough ventilation for personnel and pressurizes theroom to prevent dust from entering through leaks. The incoming fresh air must be filtered veryclosely and preferably pretreated. Otherwise heating, cooling, humidifying and dehumidifyingloads of the incoming fresh air should be taken into account in determining total loadingrequirements.

- All cables and piping should be carefully routed to lower resistance to the distribution ofconditioned air and to avoid the blockage of air-paths to any portion of the room. As a goodpractice, all cables and piping running under the raised floor should be mounted horizontallyand whenever possible, routed to run in parallel with the air-path.

- In order to obtain the most effective air distribution, units should not be located too closetogether. Attention should be taken to avoid locating the units in an alcove or an extreme endof a long narrow room.

4.2 Unit Delivery

- Inspect the unit immediately upon delivery.

- Check the packaging for signs of damage. Remove the packaging and check the unitthoroughly.

- Damage should be reported to the transport company and to your Canatal representative.

4.3 Location Considerations

4.3.1 Positioning of indoor units

The M Series units are designed to be free standing on an accessible raised flooring system provided withsufficient pedestal supports underneath. A minimum raised floor height of 300 mm/12in is required.However, it is highly recommended to use a separate floor stand as a support, which is independent of theraised floor system. This allows the unit to be installed prior to erecting the raised flooring system thusproviding much easier access to piping and electrical connections. The floorstand/unit should be isolated toreduce possible transmission of vibration to other equipment.

The room layout should provide 600mm/24in service clearance in the front of the unit for the routine serviceand maintenance.

The Canatal OEM Floorstand uses a locking nut system for the floor stand feet. Use the bottom nut to leveland the top nut to lock the levelling nut into place.

8


4.3.2 Positioning of outdoor heat rejection devices

The outdoor heat rejection devices such as air-cooled condensers and drycoolers should be located as closeto the indoor unit as possible. From a security and environment standpoint, the outdoor heat rejectiondevices should be installed away from public access and occupied areas where a low ambient sound level isrequired.

In order to avoid short circuiting and inter-unit re-circulation, outdoor heat rejection devices should belocated at least 1m/3ft away from any walls, obstructions or adjacent units. To ensure maintenance freeoperation, outdoor heat rejection devices should be located away from the areas that are continuouslyexposed to loose dirt and foreign materials that may clog the coil.

The outdoor heat rejection devices should be firmly secured on steel supports or concrete plinths.

4.4 Unit Handling

- Keep the unit upright at all times.

- Transport the unit with a fork lift truck.

- Do not expose indoor unit to dust from the construction site, or the outdoors.

4.5 Piping - General

- Piping located below the raised floor should be positioned so as to ensure that it does notrestrict either the air discharging from the unit or the general air distribution beneath the floor.

- Mount pipes side-by-side on support brackets. Do not stack pipes on top of one another.

- Piping should run parallel to the airflow, where possible.

- If trap is not installed at the factory, the condensate and humidifier drain lines should be fittedwith water traps. A minimum fall of 1 cm per meter(

1/2in per 3ft) is recommended.

- Pipe insulation should be fitted on all pipes in accordance with local regulations.

9




4.6 Air inlet and outlet openings

4.6.1 Downflow,upflow front return and upflow bottom return models

- Refer to Figures 6 or 7 and Table 9 for the dimensions of the inlet and outlet air openings onthe unit.

- All units are fitted with a 30mm/1.18” flange, top and bottom. (Front return upflow units haveair inlet through a grille in the front panel).

All Models: A [mm]A

[in.]B [mm]

B[in.]

C [mm]C

[in.]

01 - 03 DX & CW 700 27.56 553 21.77 55 2.17

01 - 02 FC +DS 700 27.56 700 27.56 55 2.17

04 - 05 DX, CW, FC + DS 700 27.56 700 27.56 55 2.17

06 - 08 DX, CW, FC + DS 1400 55.12 700 27.56 55 2.17

09 - 10 DX, CW, FC + DS 2100 82.68 700 27.56 55 2.17

11 - 12 DX, CW, FC + DS 2800 110.24 700 27.56 55 2.17

Table 9. Air inlet / outlet openings - dimensions

Note: DX = Direct Expansion Models, Air, Water And GlycolCW = Chilled Water ModelsFC = Free Cooling ModelsDS = Dual Source Models

10


C

B

C

C

C

A

Plan View

Figure 6. Air inlet/outlet openings - chilled water models

ACC

C

C

B Plan View

Figure 7. Air inlet/outlet openings - DX Models, free cooling and dual source models

4.6.2 Upflow rear return models

All Models:No of

ModulesA

[mm]A

[in.]B

[mm]B

[in.]C

[mm]C

[in.]D

[mm]D

[in.]

01 - 03 DX, CW, FC + DS 1 883 34.8 707 27.8 51.5 2.03 56 2.2

04 - 05 DX, CW, FC + DS 1 883 34.8 707 27.8 51.5 2.03 56 2.2

06 - 08 DX, CW, FC + DS 2 883 34.8 707 27.8 51.5 2.03 56 2.2

09 - 10 DX, CW, FC + DS 3 883 34.8 707 27.8 51.5 2.03 56 2.2

11 - 12 DX, CW, FC + DS 4 883 34.8 707 27.8 51.5 2.03 56 2.2

Table 9. Air openings - upflow rear return models

4.7 Plenum installation - general

- Plenums are available in a wide variety of configurations, solid-sided duct plenums, dischargeplenums with grilles, filter plenums etc.

- The plenum is supplied in kit form, the front and rear plenum panels are fixed directly to theflange at the top the unit and the side panels are then fixed to the front and rear plenumpanels.

- Full assembly instructions are supplied with kit form plenums.

4.8 High efficiency filters

- Some units and/or configurations equipped with high efficiency filters (EU7, EU8 or higher) arehoused in a duct plenum or a grille plenum.

- Plenums are supplied in kit form. The plenum is attached to the unit as described earlier.

- Full assembly instructions are supplied with kit form plenums.

11



A

BC

D

C

A

BC

D

C BC C

A

BC

D

C BC C BC C

Figure 10. Air inlet openings - upflow rear return models


4.9 Electrical connections

- Standard 50 cycle products (380-415V) are designed for use with a three-phase, neutral andearth electrical supply. Standard 60 cycle products (460, 575 and 220V) are designed for usewith a three-phase and earth electrical supply.

- Verify the correct operating voltage by checking the unit Serial Plate and the electricalschematic supplied with the unit.

- Electrical services should conform to local electrical regulations/codes in the country where theunit is installed.

- Cable trays fitted below the raised floor should not restrict airflow from the unit.

4.9.1 Preliminary check

Ensure that :

- All unit electrical components are undamaged.

- All cable connections are safe and secure.

- The site supply voltage/frequency are as specified and match those on the unit Serial Plate.

- An electrical schematic for the unit is included with the product.

4.9.2 Power supply

All models are fitted with a door interlocked three-phase mains isolator.

The isolator and terminals will accept cables up to 34mm2/#2 gauge. The power cables should be sized in

accordance with local and national codes. Refer to the "Electrical Data" section in the Technical Data Manualor the Serial Plate for current requirements.

4.9.3 Interconnecting wiring

Numbered terminal blocks for field installed control wiring are provided on the power panel.

The numbered terminal blocks will accept control wiring up to 4mm/12 gauge. The terminal assignmentsdepend on the type of controller fitted to the unit. Please refer to the appropriate Controller User Manual andcontrol wiring diagram supplied with the unit.

5. Refrigerant pipework installation

5.1 Pipework installation

Good practice should always be followed when connecting refrigerant piping in direct expansion systems.

As many of the operational problems encountered in a refrigeration system can be traced back to improperdesign and installation of refrigerant piping, it is essential that the following guidelines for good practice beobserved:

- Use clean and dehydrated refrigeration quality tubing with both ends sealed.

- Cut and form tubes carefully to avoid getting dirt or metal particles into the refrigeration lines.Never use a hacksaw to cut the tubing.

12


- Once the system is open, complete the work as quickly as possible to minimize ingress ofmoisture and dirt into the system. Always put caps on ends of tubes and parts not beingworked on.

- To prevent scaling and oxidation inside the tubing, pass an inert gas such as nitrogen throughthe line while carrying out brazing, silver soldering or any other welding processes.

- It is recommended that quality refrigeration solder (95% tin, 5% silver) is used for its excellentcapillary action.

- Use minimum amount of solder flux to prevent internal contamination of the piping. Use fluxwith care as it is usually acidic in nature.

- Install a trap on the vertical riser of a hot gas line for every 6m/20ft in elevation to collectrefrigerant and lubrication oil during off cycle.

- Insulate liquid lines that may be subjected to high heat gains. Insulate low level discharge linesto avoid burning due to accidental contact.

- Design and arrange refrigerant piping for the remote condenser in such a way so that adequatevelocity of refrigerant can be maintained to prevent oil trapping.

5.2 Recommended pipe size for remote condenser

5.2.1 Hot gas line

Air Cooled Units - Downflow and Upflow

Downflow Models: MAD01 MAD02 MAD03 MAD04 MAD05 MAD06 MAD06 MAD07 MAD07 MAD08 MAD08 MAD09 MAD10 MAD11 MAD12

Upflow Models: MAU01 MAU02 MAU03 MAU04 MAU05 MAU06 MAU06 MAU07 MAU07 MAU08 MAU08 MAU09 MAU10 MAU11 MAU12

No. of Circuits 1 1 1 1 1 1 2 1 2 1 2 2 2 2 2

50ft (15m)equiv.pipe length

mm 16 22 22 22 22 22 22 x 2 28 22 x 2 28 22 x 2 22 x 2 28 x 2 28 x 2 28 x 2

in 5/8 7/8 7/8 7/8 7/8 7/8 7/8 x 2 1-1/8 7/8 x 2 1-1/8 7/8 x 2 7/8 x 2 1-1/8 x2 1-1/8 x2 1-1/8 x2


mm 22 22 22 22 28 28 22 x 2 28 22 x 2 35 28 x 2 28 x 2 28 x 2 35 x 2 35 x 2

in 7/8 7/8 7/8 7/8 1-1/8 1-1/8 7/8 x 2 1-1/8 7/8 x 2 1-3/8 1-1/8 x21-1/8 x2

1-1/8 x2 1-3/8 x2 1-3/8 x2


mm 22 22 22 28 28 28 22 x 2 28 22 x 2 35 28 x 2 28 x 2 35 x 2 35 x 2 35 x 2

in 7/8 7/8 7/8 1-1/8 1-1/8 1-1/8 7/8 x 2 1-1/8 7/8 x 2 1-3/8 1-1/8 x21-1/8 x2

1-3/8 x2 1-3/8 x2 1-3/8 x2


mm 22 22 28 28 28 28 22 x 2 35 28 x 2 35 28 x 2 28 x 2 35 x 2 35 x 2 41 x 2

in 7/8 7/8 1-1/8 1-1/8 1-1/8 1-1/8 7/8 x 2 1-3/8 1-1/8 x2 1-3/8 1-1/8 x21-1/8 x2

1-3/8 x2 1-3/8 x2 1-5/8 x2

Table 11

Dual Air Cooled Units - Downflow and Upflow

Downflow Models: MDD01 MDD02 MDD03 MDD04 MDD05 MDD06 MDD06 MDD07 MDD07 MDD08 MDD08 MDD09 MDD10 MDD11


No. of Circuits 1 1 1 1 1 1 2 1 2 1 2 2 2 2


mm 16 22 22 22 22 22 22 x 2 28 22 x 2 28 22 x 2 22 x 2 28 x 2 28 x 2

in 5/8 7/8 7/8 7/8 7/8 7/8 7/8 x 2 1-1/8 7/8 x 2 1-1/8 7/8 x 2 7/8 x 2 1-1/8 x 2 1-1/8 x 2


mm 22 22 22 22 28 28 22 x 2 28 22 x 2 35 28 x 2 28 x 2 28 x 2 35 x 2

in 7/8 7/8 7/8 7/8 1-1/8 1-1/8 7/8 x 2 1-1/8 7/8 x 2 1-3/8 1-1/8 x 2 1-1/8 x 2 1-1/8 x 2 1-3/8 x 2


mm 22 22 22 28 28 28 22 x 2 28 22 x 2 35 28 x 2 28 x 2 28 x 2 35 x 2

in 7/8 7/8 7/8 1-1/8 1-1/8 1-1/8 7/8 x 2 1-1/8 7/8 x 2 1-3/8 1-1/8 x 2 1-1/8 x 2 1-1/8 x 2 1-3/8 x 2


mm 22 22 28 28 28 28 22 x 2 35 22 x 2 35 28 x 2 28 x 2 35 x 2 35 x 2

in 7/8 7/8 1-1/8 1-1/8 1-1/8 1-1/8 7/8 x 2 1-3/8 7/8 x 2 1-3/8 1-1/8 x 2 1-1/8 x 2 1-3/8 x 2 1-3/8 x 2

Table 12

13




5.2.2 Liquid line

ow and Upflow

Downflow Models: MAD01 MAD02 MAD03 MAD04 MAD05 MAD06 MAD06 MAD07 MAD07 MAD08 MAD08 MAD09 MAD10 MAD11 MAD12

Upflow Models: MAU01 MAU02 MAU03 MAU04 MAU05 MAU06 MAU06 MAU07 MAU07 MAU08 MAU08 MAU09 MAU10 MAU11 MAU12

No. of Circuits 1 1 1 1 1 1 2 1 2 1 2 2 2 2 2


mm 12 12 12 12 12 16 12 x 2 16 12 x 2 19 12 x 2 16 x 2 16 x 2 19 x 2 22 x 2

in 1/2 1/2 1/2 1/2 1/2 5/8 1/2 x 2 5/8 1/2 x 2 3/4 1/2 x 2 5/8 x 2 5/8 x 2 3/4 x 2 7/8 x 2


mm 12 12 12 12 16 16 13 x 2 16 13 x 2 19 16 x 2 16 x 2 19 x 2 19 x 2 22 x 2

in 1/2 1/2 1/2 1/2 5/8 5/8 1/2 x 2 5/8 1/2 x 2 3/4 5/8 x 2 5/8 x 2 3/4 x 2 3/4 x 2 7/8 x 2


mm 12 12 16 16 16 19 12 x 2 19 12 x 2 22 16 x 2 16 x 2 22 x 2 22 x 2 22 x 2

in 1/2 1/2 5/8 5/8 5/8 3/4 1/2 x 2 3/4 1/2 x 2 7/8 5/8 x 2 5/8 x 2 7/8 x 2 7/8 x 2 7/8 x 2


mm 12 12 16 16 16 19 16 x 2 19 16 x 2 22 16 x 2 16 x 2 22 x 2 22 x 2 22 x 2

in 1/2 1/2 5/8 5/8 5/8 3/4 5/8 x 2 3/4 5/8 x 2 7/8 5/8 x 2 5/8 x 2 7/8 x 2 7/8 x 2 7/8 x 2

Table 13

Dual Air Cooled Units - Downflow and Upflow

Downflow Models: MDD01 MDD02 MDD03 MDD04 MDD05 MDD06 MDD06 MDD07 MDD07 MDD08 MDD08 MDD09 MDD10 MDD11


No. of Circuits 1 1 1 1 1 1 2 1 2 1 2 2 2 2


mm 12 12 12 12 12 16 12 x 2 16 12 x 2 19 12 x 2 16 x 2 16 x 2 19 x 2

in 1/2 1/2 1/2 1/2 1/2 5/8 1/2 x 2 5/8 1/2 x 2 3/4 1/2 x 2 5/8 x 2 5/8 x 2 3/4 x 2


mm 12 12 12 12 16 16 13 x 2 16 13 x 2 19 16 x 2 16 x 2 16 x 2 19 x 2

in 1/2 1/2 1/2 1/2 5/8 5/8 1/2 x 2 5/8 1/2 x 2 3/4 5/8 x 2 5/8 x 2 5/8 x 2 3/4 x 2


mm 12 12 16 16 16 19 12 x 2 19 12 x 2 22 16 x 2 16 x 2 19 x 2 22 x 2

in 1/2 1/2 5/8 5/8 5/8 3/4 1/2 x 2 3/4 1/2 x 2 7/8 5/8 x 2 5/8 x 2 3/4 x 2 7/8 x 2


mm 12 12 16 16 16 19 16 x 2 19 16 x 2 22 16 x 2 16 x 2 19 x 2 22 x 2

in 1/2 1/2 5/8 5/8 5/8 3/4 5/8 x 2 3/4 5/8 x 2 7/8 5/8 x 2 5/8 x 2 3/4 x 2 7/8 x 2

Table 14

5.3 Evacuation

The procedure for leak testing and evacuation of the system is as follows:

1. Disconnect all line voltage fuses/MCBs except the fuses/MCB’s for the control voltagetransformers. Use the test mode to energize both the fan contactor and the solenoid valve.

2. Connect a gauge manifold to the compressor suction and discharge rotalock valves/accessports.

3. Close the compressor discharge and suction ports and open all service valves.

4. Charge the system with refrigerant R407C/R22 to a pressure of approximately 2.4 Bar/83.5psigwhere permissible by law or charge with heliotropic inert gas. Further raise the system pressureby an inert gas such as dry nitrogen to approximately 10 Bar/145psig.

5. Use an electronic leak detector to check for leaks.

6. Reclaim the charge and release all pressure from the system.

7. Connect a vacuum pump to the compressor suction and discharge rotalock valves/access portswith copper tubes or high vacuum hoses. Provide an isolating valve and a pressure gauge forpressure checking.

14


8. Evacuate the system to an absolute pressure not exceeding 1500 microns. Break the vacuum to0.14 Bar/2.03psig with refrigerant R407C/R22. Repeat the evacuation process and thenre-break the vacuum with dry nitrogen.

9. Open the compressor discharge and suction ports. Evacuate to an absolute pressure notexceeding 500 microns. Let the vacuum pump run without interruption for minimum two hours.

10. Stop the vacuum pump. Break the vacuum and weigh-in the system charge (see the SerialPlate) with vapour R407C/R22 through the discharge side of the compressor.

11. Allow the pressure to equalize.

5.4 Charging

Proper performance of the system depends largely on proper charging. Adhere to the following guidelinesfor charging:

1. Open the main isolator and insert the fuses/MCBs for the fans, control transformers and one ofthe compressors.

2. Close the main isolator and allow the compressor crankcase heater (where applicable) tooperate for at least ten (10) hours.

3. Connect the gauge manifold to both discharge and suction rotalock valves/access ports, with acommon connection to the refrigerant cylinder. Purge the lines and open the refrigerant cylindervapor valve.

4. Start the compressor using the test mode to energize the main fan and liquid line solenoid.

5. Open the suction connection on the gauge manifold. Modulate the rate of charging with thegauge manifold valve. Watch the discharge pressure closely during the charging operation toensure that the system is not overcharged.

6. Charge the system until the sight glass is just clear of bubbles.

7. Compare the temperature of the liquid line leaving the condenser with the saturationtemperature equivalent to the condensing temperature. Continue charging until the liquid linetemperature is approximately 2.5

oC/4.5

oF below the condensing temperature.

8. For dual circuit units, switch off the charged circuit and allow coil temperature to equalize toroom temperature prior to charging the second circuit.

5.4.1 Refrigerant Charge Tables

Air Cooled Refrigerant Charges

Model M..D/U01 M..D/U02 M..D/U03 M..D/U04 M..D/U05 M..D/U06 M..D/U06 M..D/U07 M..D/U07 M..D/U08 M..D/U08 M..D/U09 M..D/U10 M..D/U11 M..D/U12

No. of Circuits 1 1 1 1 1 1 2 1 2 1 2 2 2 2 2

Chargekg 1.6 1.6 2.2 1.9 2.5 3.9 3.9 3.9 3.9 5.2 5.2 7.9 7.9 10.5 10.5

lbs 3.6 3.6 4.8 4.1 5.5 8.6 8.6 8.6 8.6 11.5 11.5 17.5 17.5 23.0 23.0

Water Cooled Refrigerant Charges

Chargekg 2.6 2.6 3.1 3.3 4.0 5.7 6.6 5.7 6.9 7.3 8.2 11.5 12.5 15.9 16.3

lbs 5.7 5.7 6.9 7.4 8.7 12.5 14.5 12.6 15.1 16.1 18.0 25.4 27.6 35.1 36.0

Glycol Cooled Refrigerant Charges

Chargekg 3.2 3.2 3.9 3.9 4.7 6.5 7.4 7.0 7.5 8.9 9.0 12.3 13.4 17.3 18.0

lbs 7.0 7.0 8.5 8.7 10.4 14.3 16.3 15.5 16.6 19.6 19.9 27.0 29.6 38.1 39.6

Table 15

15




Air Dual Source Refrigerant Charges

Model M..D/U01 M..D/U02 M..D/U03 M..D/U04 M..D/U05 M..D/U06 M..D/U06 M..D/U07 M..D/U07 M..D/U08 M..D/U08 M..D/U09 M..D/U10 M..D/U11

No. of Circuits 1 1 1 1 1 1 2 1 2 1 2 2 2 2

Charge

kg 1.6 1.6 1.6 1.9 1.9 3.9 3.9 3.9 3.9 3.9 3.9 6.0 6.0 7.8

lbs 3.6 3.6 3.6 4.1 4.1 8.6 8.6 8.6 8.6 8.6 8.6 13.1 13.1 17.3

Water Dual Source Refrigerant Charges

Charge

kg 2.6 2.6 2.6 3.3 3.3 5.7 6.6 5.7 6.9 6.0 6.9 9.5 10.5 13.3

lbs 5.7 5.7 5.7 7.4 7.4 12.5 14.5 12.6 15.1 13.2 15.1 21.0 23.2 29.4

Freecooling Glycol Dual Source Refrigerant Charges

Charge

kg 2.7 2.7 2.9 3.5 3.7 6.0 6.9 6.6 7.1 7.1 7.5 10.2 11.9 15.6

lbs 6.0 6.0 6.3 7.7 8.1 13.3 15.1 14.5 15.7 15.7 16.5 22.6 26.3 34.4

Table 16

Note: For air cooled and air cooled dual source models, the system charge will consist of the internal unit charge, the external

condenser charge and the interconnecting piping charge. As the condenser selection and the length of the pipe run will vary on a site

by site basis, we recommend that you consult the Canatal Applications Engineering Department for site specific recommendations.

5.5 Fan speed control system

The fan speed control system maintains not only a constant condensing pressure over a wide range ofclimatic conditions but also high sensible cooling for the evaporator so that re-humidification is rarelyrequired throughout the year. A pressure-sensitive fan speed controller is employed in the fan speedcontrol system. It regulates the condenser head pressure at low ambient temperature by varying theairflow volume through the condenser. Upon engaging the interlock contact in the indoor unit, the fanspeed controller will directly sense the changes in the refrigerant head pressure and vary the outputvoltage from 15% to 97% of the applied voltage. Adjust as required to maintain 190 to 210psig minhead pressure during extreme hot weather charging. It may be necessary to adjust fan speed control inthe future on colder days.

5.6 Head pressure control system

For condensers possibly subjected to extremely low ambient temperatures, head pressure control isrecommended to be installed. This will avoid starving the evaporator coil with the consequence of oillogging; short cycling on low pressure control; reduction of the system capacity and erratic expansionvalve operation.

A drop in the condensing pressure often occurs in air-cooled systems as a result of low ambientconditions encountered during fall-winter-spring operation. Head pressure control renders part of thecondenser surface inactive. The reduction of active condensing surface results in a rise in condensingpressure and hence provides a sufficient liquid line pressure for normal system operation. The headpressure control system allows operation at extremely low ambient temperatures down to -40°F.

Canatal uses a two-valve head pressure control, (for each circuit, each with a heated receiver) on factoryordered condensers. The ORI is located in the liquid drain line between the condenser and the receiver.And the ORD is located in a hot gas line bypassing the condenser.

During periods of low ambient temperature, the condensing pressure falls until it approaches the settingof the ORI valve. The ORI then throttles, restricting the flow of liquid from the condenser. This causesrefrigerant to back up in the condenser thus reducing the active condenser surface. This raises thecondensing pressure. Since it is really the receiver pressure that needs to be maintained, the bypass linewith the ORD is required.

The ORD opens after the ORI has offered enough restriction to cause the differential between condensingpressure and receiver pressure to exceed 20 psi. The hot gas flowing through the ORD serves to heat upthe cold liquid being passed by the ORI. Thus the liquid reaches the receiver warm and with sufficientpressure to assure proper expansion valve operation. As long as sufficient refrigerant charge is in thesystem, the two valves modulate the flow automatically to maintain proper receiver pressure regardlessof outside ambient.

16


5.6.1 Charging

When head pressure control is utilized, there must be enough refrigerant to flood the condenser at thelowest expected ambient and still have enough charge in the system for proper operation. Aftercompleting the evacuation procedures as in the fan speed control system, follow the following guidelinesfor charging:

1. Open the main isolator and insert the fuses/MCB’s for the fans, control transformersand one of the compressors.

2. Close the main power and allow the compressor crankcase heater to operate for atleast one hour.

3. Connect the gauge manifold to both discharge and suction rotalock valves, with thecommon connection to the refrigerant drum. Purge the lines and open the refrigerantdrum vapor valve.

4. Start the compressor using the test mode to energize the main fan and compressor.

5. Open the suction connection on the gauge manifold. Modulate the rate of chargingwith the gauge manifold valve. Watch the discharge pressure closely during thecharging operation to ensure that the system is not overcharged. It is good practice toweigh the amount of gas added.

6. Charge the system until the sight glass is just clear of bubbles. The system is nowcorrectly charged for operating under head pressure control at the ambient temperaturecharging is being carried out.

7. If the system is designed to operate at ambient below the ambient that exists duringcharging, additional charge will have to be added now.

8. Read from the following table the percentage of condenser to be flooded at chargingand that at the expected minimum ambient temperature, then calculate thedifference:

Ambient Temperaturein 0

C

Ambient Temperaturein 0F

Percentage of Condenser to beFlooded

21.1 70 0

18.3 65 0

15.6 60 10

12.8 55 24

10 50 33

7.2 45 41

4.4 40 46

1.7 35 52

-1.1 30 55

-3.9 25 59

-6.7 20 62

-12.2 10 66

-17.8 0 70

-23 -10 73

-28.9 -20 76

-34.4 -30 77

-40 -40 79

Table 17

17




9. Read the charge required to flood the complete condenser for the required minimumambient temperature from the condenser technical data manual.

10. Multiply the value found in step 9 by difference in percentages calculated in step 8;this gives the additional charge required.

11. Fill in the required charge to the receiver.

12. Switch off the main power. Remove the fuse for the compressor and insert the one forthe second compressor.

13. Repeat steps 2 through 11 for the second refrigeration circuit.

18


6. Auxiliary piping installation

6.1 Chilled water / water-glycol pipework

The Chilled-Water/Water/Glycol pipework should be installed in accordance with the followingrecommendations:

- A manual shut-off valve should be installed at the supply and return pipes of each indoor unitfor routine service and emergency isolation of the unit.

- Joints installed inside the room must be kept to a minimum. The system drain dischargepoint should be installed outside the room.

- Piping inside the building should be insulated to eliminate the possibility of condensation underlow ambient conditions.

- Always use the reverse return system when two or more indoor units are served by the samesource.

- For condensing water supplied from a cooling tower which is located in a poor environment orwhen water quality is poor, an inhibitor should be added in correct quantities to prevent theformation of scale and corrosion.

- Only ethylene glycol containing a corrosion inhibitor should be used. Automotive anti-freezeis unacceptable and must not be used in the Glycol system.

- Concentration of glycol required depends on the minimum ambient temperature.The following glycol concentration is recommended.

- Refer to section 11 of this manual for recommended pipe sizes.

Recommended glycol concentration

% of ethylene glycol by weight:Minimum operating temperature

0CMinimum operating temperature

0F

10 0 32

20 - 5 23

30 - 11.6 11

40 - 20 -4

50 - 32.2 -26

Table 18

6.2 Condensate drain line

- Use PVC or copper tubing to connect the condensate drain line to the main drain.

CAUTION: If a humidifier is fitted, the piping must be rated for 100oC/212

oF water

as the condensate drain and humidifier drain may be connected togetherat the unit outlet.

- Maintain a minimum 2% slope in the drain line.

- There must be a drain trap in the drain line. Do not remove the drain trap under anycircumstances.

- Fill the drain trap with water before running the unit.

6.3 Humidifier connections (optional)

- See the humidifier section of this manual. Refer to table 19 for pipe connection sizes.

19




6.4 Hot water reheat (optional)

- Use copper or steel piping.

- Insulate both pipes.

- Refer to Table 19 for pipe connection sizes.

Model:Condensate

Drain Line (mm)Condensate

Drain Line (in.)Hot Water

Reheat (mm)Hot Water

Reheat (in.)Humidifier

Supply (mm)Humidifier

Supply (in.)Humidifier Drain

(mm)Humidifier Drain

(in.)

01 - 03 DX & CW 19 3/4 19 3/4 19 3/4 32 1.25

04 - 05 DX & CW 19 3/4 19 3/4 19 3/4 32 1.25

06 - 08 DX & CW 19 3/4 19 3/4 19 3/4 32 1.25

09 - 10 DX & CW 19 3/4 22 7/8 19 3/4 32 1.25

11 - 12 DX & CW 19 3/4 22 7/8 19 3/4 32 1.25

Table 19 - Pipe connection sizes

7. Electrical Installation

7.1 Start-up procedure

NOTE: On initial start-up, power should be applied to the compressor crankcase heatersfor a minimum of ten (10) hours prior to compressor operation.

1. Switch OFF electric power to the unit at the unit Mains Disconnect Switch.

2. Switch OFF all Fuses/MCB’s in the unit electrical panel.

3. Tighten all electrical connections.

4. Open all valves in the refrigerant and cooling water circuits.

5. Check the humidifier, hot water coil, water-cooled condenser, valves, piping etc. for waterleakages.

6. Check for refrigerant leaks, using a leak detector. If there are leaks, reclaim the charge, repairthe leak and recharge the unit.

7. Check that the air cooled condenser/drycooler is switched ON and/or enabled from the unit.Depending on the control system fitted to the condenser/drycooler, the fan may start once theunit is powered or, if a pressure switch or fan speed controller is fitted, the fan will only startwhen triggered by refrigerant pressure. Check the electrical schematic, supplied with theunit/condenser control.

8. Remove all transport tapes/securing hardware etc. from the compressor(s) and fan impeller(s).

WARNING: Check again that the fan MCB/Fuse is OFF. Before powering the unit,ensure all personnel and tools are clear of any moving parts of the unit- ESPECIALLY THE FAN IMPELLER.

9. Switch ON electric power to the unit at the Mains Disconnect Switch.

10. Check the supply voltage on all phases.

11. Switch ON the Control Voltage MCB/Fuse, to power the low voltage circuit.

20


12. Check that the controller is powered and operating. The display (backlit) should illuminate,(refer to the relevant Controller User Manual, if necessary).

If the display does not illuminate:

- Check the power supply to the controller.

- Check the control fuses/MCBs.

13. Check again that the compressor has been preheated for at least 10 hours before starting theunit.

14. Switch ON all MCB’s in the unit electrical panel.

15. Remove the service door(s).

WARNING: Ensure that the area around and inside the fan impeller(s) are free oftools, nuts, bolts, fasteners and debris etc. before starting the fan(s).Items falling into the fan impeller may be ejected at high velocity and cancause serious injury or death.

16. Start the unit - press the I/O (ON/OFF) switch on the controller keypad.

17. Allow the fan(s) to run for a short period to check rotation and direction (clockwise rotationwhen viewed from above). Do not run the fan(s) for more than 10s with the service door open,it may overload the fan motor.

18. If the fan(s) and/or compressor rotate in the wrong direction, power down and interchange(swap) two of the phases at the mains disconnect switch.

19. Ensure that all controller settings are correct and that there are no alarms (refer to the relevantController User Manual, if necessary).

20. If the unit is fitted with a Humidifier, refer to the Humidifier Commissioning section.

21. Once the system is operating under load, check unit operation. Check that the compressors(s),humidifier and electrical heaters operate when required (adjust the controller setpoints asrequired to "force" them on).

22. Return all setpoints to the correct settings.

23. Check the current input of all components, and check for over current against Serial Plateratings.

7.2 Automatic restart

The unit is set to automatically restart after an electrical supply interruption. This can be disabled ordelayed from the controller (refer to the relevant Controller User Manual, if necessary).

21




8. Operation

8.1 Microprocessor controls

The M Series range are fitted with one of a range of microprocessor controller options, depending on thecustomer specification and application.

Controllers are available in a number of configurations, they normally consist of a controller (in a plastichousing) mounted in the electrical compartment and a keypad/ display mounted on the door, orremotely, connected via a ribbon cable. The unit may be controlled and/or monitored from a BuildingManagement System (BMS) or other critical alarm monitoring system.

Determine which type of controls are fitted to the unit and refer to the specific Controller User Manualsupplied with the unit for programming/operating details.

Typical controller alarms include:

- Loss Of Airflow - A differential air pressure switch is used to signal loss of airflow in the unit.This is a single-pole double-throw switch (SPDT).

- Temperature And Humidity Alarms - Temperature and humidity sensors, located in thereturn air section of the system constantly monitor room conditions. Should room conditionsexceed the selected parameters, a visual and audible alarm will activate. The audible alarmmay be silenced by pressing the SILENCE button.

- Change Air Filters - Periodically, the air filters in the units must be changed. A differentialair pressure switch closes when the pressure drop across the filters becomes excessive.

- Water Detection - Water has been detected by the water detection module. (Optional)

- Smoke Detection - The presence of smoke has been detected by a smoke detector. (Optional)

8.2 Variable frequency drive - description

The Variable frequency drive (if fitted) is fully wired and programmed in the factory and normallyrequires no adjustment during installation. The drive starts and stops the fan motors in response to anenabling run signal from the unit microprocessor controller.

The drive allows the air conditioning unit to be tuned to the exact required air volume based ontrue site static pressure conditions.

The drive is programmed by adjusting the control parameters stored in the drive's non-volatile memory.These parameters are accessible to view/edit either remotely, via a communications link or at the unitusing the drive's keypad and display. Parameters include motor operating voltage/frequency, overloadcurrent, acceleration/ deceleration time, skip frequencies, restart mode and (user-selectable) pre-setspeeds.

In some circumstances (if so ordered and configured at the factory) the VFD can also be used indehumidification mode to lower the air volume for extra latent removal.

22


8.3 Variable frequency drive - adjustment

WARNING: The Variable frequency Drive should only be programmed by trainedpersonnel, serious injuries or damage can result from incorrect usageor carelessness when adjusting the drive.

The Variable frequency Drive is supplied with a detailed User Manual, containing full details ofdisplay/keypad operation and parameter descriptions and settings. Ensure that you have read and fullyunderstood this Manual before adjusting the Variable frequency Drive.

8.4 Humidifier - general

The steam bottle humidifier is fitted and adjusted in the factory and should require no adjustment (otherthan to connect a water supply and water drain) during installation.

Humidifier operation is controlled directly from the main unit microprocessor controller.

Refer to the appropriate Controller User Manual and OEM Humidifer Manual supplied with the airconditioning unit for full humidifier programming / operating details.

The humidifier consists of a steam boiler assembly and a steam pipe. Depending on the model, thehumidifier produces a maximum steam output of 8 kg/hr (17.6lbs/hr). The humidifier is factory pre-set to100% of max. output.

NOTE: The humidifier requires supply water with a conductivity between 50 and800 �S/cm (at15

oF). Max. supply water temperature 35

oC (95

0F). Do not use

demineralised water or water containing impurities.

8.5 Humidifier commissioning

WARNING: The humidifier bottle and the steam outlet pipe can remain very hotfor some time after humidifier use, they can cause severe burns.

When ordered with the unit, the humidifier is supplied fully fitted. Water supply and water drainconnections must be made, refer to Figures 11 and 12.

23



Shut-off Valve

Humidifier

Water

Supply

Inside

Unit

Outside

Unit

Filter

Figure 11. Humidifier water supply


8.5.1 Humidifier water supply

Connect the supply as shown in Figure 11. The water supply connection on the humidifier is a 19mm/3/4 “ male coupling.

It is recommended to fit a shut-off valve and a filter in the humidifier supply line.

8.5.2 Humidifier water drain

Connect the drain as shown in Figure 12. The drain water connection is a 32mm/1.25" ID straightconnection. The drain water hose must be capable of withstanding temperatures of up to 100

oC (212

oF).

Ensure a minimum gradient in the drain hose of at least 2cm per meter or 1" per foot (2%). Ensureunrestricted flow, no back pressures.

Once the connections are made, fill the trap with water before starting the humidifier.

Do not operate the humidifier without a drain trap.

8.5.3 Humidifier pre-use check

Before using the humidifier, check:

- The water supply and drain connections are secure.

- The water supply shut-off valve is fully open.

- All wiring is correct and secure, including the earth connection.

- The mounting of the flexible steam pipe between the steam bottle and the steamdistributor pipe.

WARNING: Care must be taken when working near the steam bottle and steamoutlet pipe. Water/Steam at 100

oC (212

oF) may be present.

24


Water Drain Trap

Drain Tray

Water Drain Hose

To Drain

Figure 12. Humidifier water drain

8.5.4 Humidifier operation

Water, provided it contains even a small quantity of dissolved mineral salts in solution, is a conductor ofelectricity. This means that if two or more metal elements - the electrodes - are put into a containercontaining undistilled water and a potential difference is applied to them, an electric current passesbetween them. The water then behaves like an ordinary electric resistance and, like it, transforms powerinto heat, raising its own temperature and boiling.

Steam production can be controlled by adjusting the flow of electric current by varying the depth ofimmersion of the electrodes. The depth of immersion is varied by pumping in or draining water from theboiler.

8.5.5 Humidifier - start-up

When starting with an empty cylinder, the water conductivity is normally insufficient for the max. steamoutput (selected via the control parameters ) to be reached immediately.

The humidifier will produce as much steam as possible by filling the cylinder completely. Any water boiledoff is immediately refilled. The drain valve is kept shut and therefore, as the steam does not contain anysalts, the conductivity of the water within the cylinder slowly increases until the humidifier steam outputis reached.

The length of the start-up period depends upon the water conductivity. For very conductive water, thehumidifier steam output may be reached immediately.

8.5.6 Humidifier - normal operation

The water level is controlled to maintain a steam output equivalent to the humidifier steam output +/-10%. The supply and drain valves are used to control the water level, and also to keep the waterconductivity at the optimum level.

When the call for humidification ceases, the steam production rate returns to zero. As conductive waterremains in the cylinder, on a new call for humidification, the humidifier steam output is reached almostimmediately.

8.5.7 Humidifier - cylinder worn

Over time, a calcium deposit may start to form on the electrodes and a higher water level needs to bemaintained to obtain the same humidifier steam output.

When the water level reaches the level electrode, the drain valve is kept shut so as to increase theconductivity. The steam production rate will however start to decrease.

When the rate has reached 50% of the humidifier steam output, an Alarm is generated. This warns theuser that the cylinder will need to be cleaned or replaced.

8.5.8 Humidifier alarms

The humidifier generates a range of alarms depending on the alarm cause. Full details of all alarms withtroubleshooting/maintenance advice are provided in the separate Controller User Manual supplied withthe unit.

25




9. Maintenance

The Canatal M Series computer room air-conditioning unit employs carefully selected components ofproven quality to ensure prolonged trouble-free operations. Maintenance-free solid state controllers alsoenhance the reliability of the whole system.

Canatal uses one microprocessor controller to centralize all control and monitoring functions which makesthe machine user friendly and simplifies maintenance routine and fault finding procedure. Themaintenance practice which are given below are for guidance only and are for general service andmaintenance to minimize wear and tear resulting from normal operation and for insurance that themachine will be operating under the most efficient condition.

Maintenance is classified into two categories, i.e. general service and preventive maintenance. Generalservice, including regular inspection may be carried out by unskilled personnel of the client. Preventivemaintenance however must be performed by competent service personnel familiar with the servicing ofair-conditioning, electrical and electronic engineering equipment. Our authorized service agents havebeen carefully chosen to provide efficient and quality service to our clients.

Failure to follow proper general service and preventative maintenance procedures will void the warrantyof this product. Please also refer to warranty document for additional important information.

9.1 General service and inspection

Although the status of the machine and the environmental conditions are under the constant surveillanceof the controller and any abnormality will be announced either as out-of-limit warning or alarm, there is,however no place for complacency if efficient and reliable service is demanded from these wellengineered machines.

9.2 Regular inspection

The machine should be inspected periodically to ensure that no unusual noise or changes in operation arepresent. Any abnormalities should be investigated immediately by qualified air-conditioning personnel.

9.3 Sensor calibration check

Refer to the Controller User Manual for full details of sensor calibration and adjustment procedures.

9.4 Preventive maintenance: Quarterly

For the machine's warranty to be valid, regular maintenance comprising four visits per annum should beundertaken by qualified personnel or staff of our appointed agents.

9.4.1 Replacement of air filters

Visually check the air filters for cleanliness. If in doubt, use a manometer to measure the pressuredifferential before and after the filter. If the pressure-drop is more than 200 Pa/1”w.g, the filters shouldbe replaced.

Switch off the machine and open the front panel(s). The filters are mounted on the coil face. Afterremoving all dirty filters, put new clean filters in ensuring that airflow direction arrow points intomachine. Restore panels back to the machine.

26


9.4.2 Microprocessor controller

The state-of-art solid state microprocessor based controller is virtually trouble free and little or nomaintenance is needed. Quarterly checks of the following are recommended for efficient operation of themachine. Refer to the Controller User Manual if necessary.

Note: The fan must be kept running through individual tests.

1. Check controller display.2. Check alarm operation and calibrate where necessary.3. Check accuracy of sensors and calibrate where necessary.4. Check weekly operation program and real time clock.5. Check keyboard functions.6. Check output voltage of controller.

9.4.3 Power panel

1. Check operation of all Fuses/MCB’s, and contactors.2. Check current in each motor and heater circuit.3. Check operation of overload devices.4. Check cable terminations for tightness.

9.4.4 Compressor lubrication

The refrigeration compressors must have adequate lubrication to ensure trouble-free operation and along life. On the start-up of any new system, some oil will be lost to coat the inside of the piping, somelogged in low velocity areas of the system, and some will be kept in circulation. This lost oil must bemade up by adding new oil to the system after the initial start-up. Very low compressor oil levels cancause complete loss of lubrication and may result in an immediate compressor failure if not protectedagainst.

The loss of oil can also be caused by flooded starts or refrigerant migrating to the oil during an off periodand pulling the oil out of its sump during the sudden pressure drop of a start-up. The level should beobserved in the sight glass immediately after the compressor shutdown, while it is still warm. The levelobserved when the compressor is not running for a long period may be a mixture of oil and refrigerantwhich would not be a true indication of the oil level when the compressor is running.

If the oil level in the sight glass of the compressor is less than one-quarter (¼

) up from the bottom of

the glass, this indicates a low oil level. If the oil level is up to three quarters (¾

) from the bottom, this

indicates a high oil level. Therefore, the oil level should be between¼

to¾

up the sight glass when the

compressor is running.

Notes:

1. Allow compressor to run for at least 10 minutes before checking the sight glass.

9.4.5 Cooling coil and refrigeration system

The refrigeration circuit shall be inspected each month for proper function and signs of wear andabnormality. In most cases signs of deterioration of component parts give prior warning to systemfailure. Periodic inspection is essential to detect and prevent failure.

The liquid line sight glass should be inspected for the presence of bubbles and moisture. Bubbles in thecircuit indicates a shortage of refrigerant in the system and changing of the indicator colour from greento yellow denotes presence of moisture. If moisture is detected change filter drier and refrigerant asrequired. If charge is found to be low check system for leak using appropriate procedures.

27




1. Check the cleanliness of the coil.

2. Check the cleanliness of the stainless steel drain pan and drain system.

3. Check the operation of the controls.

4. Check the operation of the drier filter, sight glass and valves.

9.4.6 Condenser

A. Air Cooled Condensers

1. Check the condition of the condenser coil.

2. Check and clean all debris from the underside of the coil to ensure that the airflow isnot restricted.

3. Check the refrigerant line for leakage or damage.

B. Water Cooled Condensers

1. Check the operation of the valves.

2. Check the pipe work and the fittings for leakage.

9.4.7 Electric motor

Totally enclosed fan cooled electric motor with class F insulation and IP55 is our standard.

1. Check the motor current.

2. Check the bearing condition and grease or replace where necessary.

9.4.8 Fan impeller and motor

WARNING: Avoid hands and clothing becoming entangled in the rotating partsof the fan assembly. Ensure that the area around and inside the fanimpeller are free of tools, nuts, bolts, fasteners and debris etc.Before starting the fan. Items falling into the fan impeller may beejected at high velocity and can cause serious injury or death.Ensure that the fan impeller has stopped rotating before inspection.

Remove the motor terminal box cover and check the fan motor(s) for any loose electrical connections -re-tighten as necessary, inspect the cabling to the motor(s).

Inspect the fan deck, fan inlet ring, fan impeller and motor support plate for signs of play, defects,damage or corrosion.

Check that the anti-vibration mounts are tight and in good condition.

Check that the Grub Screw securing the fan impeller to the motor shaft is tight and that there isadequate clearance for rotation.

Check that the inlet ring is concentric with the fan impeller and that the inlet ring is inserted 8mm/0.31”(all around) into the fan impeller. Adjust the fan impeller if required using the adjuster bolts on theanti-vibration mounts.

Measure and record the motor current under normal operating conditions. (If the unit is fitted with a VFD,read the amps directly from the VFD display panel).

9.4.9 Electric heater

1. Check the current of heater.

2. Check the mounting bracket.

28


9.4.10 Plate condenser(s)

Check the refrigerant and coolant pipework, the body of the condenser and the water regulating valve forsigns of leaks, damage and corrosion. Repair/replace as necessary.

9.4.11 Humidifier

The humidifier consists of an electrode steam boiler for high efficiency and quick response. Automaticflushing of the water using an auto-adjusting process enhances boiler life and maintains full output overthe life span of the boiler.

1. Check the operation of fill and drain solenoid valves.

2. Check and clean the fill valve inlet strainer.

3. Check the high water level sensor. (When replacing steam boiler).

4. Check the boiler condition and water level.

The humidifier is designed to operate on ordinary tap water. Minerals will collect in the disposable bottleand the microprocessor will alarm when the bottle requires replacing. The quantity of such deposits andthe life span of the bottle depends on the quality of the city water supply.

WARNING: The steam bottle and outlet pipe can remain hot after the unit isshut down.

Check for loose electrical connections on the steam bottle. Re-tighten any loose connections.

Check all pipes and connections for defects, leaks, damage and scaling of the canister or electrodes.

Remove any scale from the cylinder (if serviceable), water outlet hose and drain pump.

Check the electrodes

The canister will have to be cleaned or renewed if it is scaled at an interval dependent on the conductivityof the water.

If a filter is fitted, inspect and clean as necessary.

Ensure that the steam bottle is properly secured to the cabinet.

9.4.12 Compressor(s) - general

Check the compressor body and couplings for signs of oil leaks, damage and corrosion. Repair/replace asnecessary.

Check the anti-vibration mounts at the base of the compressor. Repair/re-tighten as necessary. Checkthe refrigerant pipework and connections for signs of oil leaks, damage and corrosion. Repair/replace asnecessary

Remove the compressor terminal cover and check for loose electrical connections/damaged insulation.Re-tighten any loose connections. Replace the terminal cover.

Measure and record the compressor current.

9.4.13 Refrigerant lines

Check the refrigerant pipework for signs of oil leaks, damage (particularly where pipes are routed close tothe cabinet structure) and corrosion. Repair/replace as necessary.

Check that the pipe insulation is intact.

29




Check that the equalizer line(s) and capillary tubes from the thermostatic expansion valve(s) (TXV) areintact and securely supported.

9.4.14 Cooling/heating coil

Check the cooling/heating coil surfaces and pipework for signs of leaks, damage and corrosion.

Check the fins. If they are bent, they should be carefully straightened using an appropriate fin comb.

9.4.15 Cabinet

Check the cabinet for any obvious damage, corrosion etc. - repair as necessary.

Ensure that all seals are in place and all panels are properly secured to the frame.

9.4.16 Air flow switch

Check for loose electrical connections on the air flow switch. Re-tighten any loose connections.

Check the pressure sensing tube between the air flow switch and the Fan Inlet Ring for signs of damage.Ensure that it is properly fixed in position. Replace the tube if necessary.

To check the operation of the switch:

1. Switch ON electrical power to the unit.

2. Switch OFF the fan Fuse/MCB while the fans are running.

3. The switch should trigger a loss of airflow alarm.

9.4.17 Filter clog switch

Check for loose electrical connections on the filter clog switch. Re-tighten any loose connections.

Check the pressure sensing tube on the filter clog switch for signs of damage. Ensure that it is properlyfixed in position. Replace the tube if necessary.

To check the operation of the switch:

1. Switch ON electrical power to the unit.

2. Block half of the filter surface area while the fans are running. Use a sheet ofcardboard or similar.

3. The switch should trigger a change filter alarm.

30


9.4.18 Electric reheat

Check for loose electrical connections on the reheat elements and reheat safety thermostat. Re-tightenany loose connections.

Check the reheat elements and reheat safety thermostat for signs of damage and security of mounting.

Check the operation of the reheat safety thermostat.

Measure and record the reheat current.

9.4.19 Electric panel

Check for loose electrical connections on all components in the electrical panel. Re-tighten any looseconnections.

Check the electric panel for any signs of damage, corrosion and for security of mounting. Repair/replaceas necessary.

Check that component contactors operate properly.

9.4.20 Fire detection sensor (optional)

Check for loose electrical connections on the fire detection sensor. Re-tighten any loose connections.

Check for any signs of damage and security of mounting. Repair/replace as necessary.

Test the function of the fire detection sensor, where possible.

9.4.21 Water detection sensor (optional)

Check for loose electrical connections on the water detection sensor. Re-tighten any loose connections.

Check for any signs of damage, corrosion and for security of mounting. Repair/replace as necessary.

Test the function of the water detection sensors, where possible.

9.4.22 Hot water control valve (optional)

Check for loose electrical connections on the valve motor. Re-tighten any loose connections.

Inspect the valve for leaks in the closed and open position. Repair or replace as necessary.

Change the controller temperature setpoint to 5oC/9

oF above room temperature and check if the hot

water valve opens fully .

If the valve does not fully open/close, the motor may require adjustment (consult the valvemanufacturers data for specific adjustment details).

9.4.23 Functional tests

9.4.23.1 Cooling Test

Switch ON electrical power to the unit.

Change the temperature setpoint to 5oC/9

oF below room temperature.

The compressor should operate.


oF above room temperature.

The compressor should stop.

Reset the temperature setpoint.

31




9.4.23.2 Reheat Test



oF above room temperature.

The heating contactor should activate and the heating elements should heat.

(In units with hot water reheat, the hot water reheat valve should open.)

Reset the temperature setpoint.

9.4.23.3 Humidification Test


Change the humidity setpoint to 10% above the room humidity reading.

The humidifier contactor should activate and the humidifier should operate.

Reset the humidity setpoint.

9.4.23.4 Dehumidification Test


Change the humidity setpoint to 10% below the room humidity reading. (Changethe temperature setpoint to a setting above room temperature, if necessary).

The compressor should operate. On a unit with a Variable Frequency Drive, the unitmay switch to a lower air volume.

Reset the humidity (and temperature) setpoint.

32


10. Corrective Maintenance

10.1 Air Filters - renewal

The unit is fitted with a filter clog switch which triggers a Change Filter alarm when the pressure dropacross the filter exceeds the switch setting. This indicates the need for filter replacement. Refer toTable 20 for filter dimensions.

Switch OFF electrical power to the unit.

Open the front panels and remove the filters from the coil face. Fit new filters and close the front panel.


Model:Dimensions

(mm)Dimensions

(in.)Quantity:

Downflow & Upflow Front Return Models

01 - 03 368 x 920 x 50 14.5” x36.2” x2” 2

04 - 05 368 x 1040 x 50 14.5” x40.9” x2” 2

06 - 08 368 x 1040 x 50 14.5” x40.9” x2” 4

09 - 10 368 x 1040 x 50 14.5” x40.9” x2” 6

11 - 12 368 x 1040 x 50 14.5” x40.9” x2” 8

Upflow Rear Return Models

01 - 03 580 x 820 x 50 22.8” x32.3” x2” 1

04 - 05 580 x 820 x 50 22.8” x32.3” x2” 1

06 - 08 580 x 820 x 50 22.8” x32.3” x2” 2

09 - 10 580 x 820 x 50 22.8” x32.3” x2” 3

11 - 12 580 x 820 x 50 22.8” x32.3” x2” 4

Table 20. Filter dimensions for standard EU4 filters

10.2 Humidifier - steam bottle renewal

WARNING: The steam bottle and outlet pipe can remain hot after the unit isshut down. Shut OFF the humidifier at least 2 hours beforemaintenance.

Over time, the humidifier electrodes may become coated with mineral solids. This coating insulates theelectrodes and decreases the current flow. Once the steam output of the humidifier falls to 50% of theselected output, an alarm is generated which indicates the need for bottle renewal.

33




11. Installation Data

11.1 Chilled water cooled

Chilled Water Cooled Units - Downflow and Upflow

Model Nos.MCD01 MCD02 MCD03 MCD04 MCD05 MCD06 MCD07 MCD08 MCD09 MCD10 MCD11 MCD12

MCU01 MCU02 MCU03 MCU04 MCU05 MCU06 MCU07 MCU08 MCU09 MCU10 MCU11 MCU12

Weight

Netkg 180 180 185 230 240 420 440 460 600 630 880 920

lbs 397 397 408 507 529 926 970 1014 1323 1389 1940 2028

Gross

kg 190 190 195 245 255 440 460 480 630 660 920 960

lbs 419 419 430 540 562 970 1014 1058 1389 1455 2028 2116

Piping Data

Pipe ConnectionSize(1)

mm 22 22 28 28 28 42 42 54 54 54 54 54

in 7/8" 7/8" 1-1/8" 1-1/8" 1-1/8" 1-5/8" 1-5/8" 2-1/8" 2-1/8" 2-1/8" 2-1/8" 2-1/8"

Valve Sizemm 19 19 25 19 25 32 32 50 50 50 50 50

in 3/4" 3/4" 1" 3/4" 1" 1-1/4" 1-1/4" 2" 2" 2" 2" 2"

Table 20

(1)Outside diameter. Closest metric equivalent

11.1.1 Chilled Water Models MCD/U01, MCD/U02 and MCD/U03

34


810

1967

1950

618

663

810

663

Plan View

Front View Side View

Figure 13. Dimensions of chilled water models MCD/U01, MCD/U02 and MCD/U03

11.1.2 Chilled Water Models MCD/U04 and MCD/U05

11.1.3 Chilled Water Models MCD/U06, MCD/U07 and MCD/U08

35



CANATAL

810mm

1967m

m

1950m

m764mm

810mm

810mm

810m

m

Plan View

Side ViewFront View

31.89in

30.08in

31.89in

31.89in

31.8

9in

77.4

4in

76.7

7in

Figure 14. Dimensions of chilled water models MCD/U04 and MCD/U05

1574

1967

1950

764

810

1574

810 Plan View

Side ViewFront View

Figure 15. Dimensions of chilled water models MCD/U06, MCD/U07 and MCD/U08




36


2296

2338

764

810

1967

1950

1967

1950

2338

810

Plan View

Side ViewFront View


3102764

810

1967

1950

1967

1950

3102

810

Plan View



11.2 Direct expansion

11.2.1 Air cooled Units

Air Cooled Units - Downflow and Upflow

Model Nos.MAD01 MAD02 MAD03 MAD04 MAD05 MAD06 MAD06 MAD07 MAD07 MAD08 MAD08 MAD09 MAD10 MAD11 MAD12

MAU01 MAU02 MAU03 MAU04 MAU05 MAU06 MAU06 MAU07 MAU07 MAU08 MAU08 MAU09 MAU10 MAU11 MAU12

No of Circuits 1 1 1 1 1 1 2 1 2 1 2 2 2 2 2

Weight

Net

kg 220 230 240 280 290 420 430 440 450 470 480 610 640 720 746

lbs 485 507 529 617 639 926 948 970 992 1036 1058 1345 1411 1587 1645

Gross

kg 230 240 250 290 300 435 445 455 465 485 495 635 665 755 781

lbs 507 529 551 639 661 959 981 1003 1025 1069 1091 1400 1466 1664 1722

Piping Data

Discharge(Hot Gas)Pipe Size(1)

mm 16 16 16 16 22 22 16 x 2 22 16 x 2 28 22 x 2 22 x 2 22 x 2 28 x 2 35 x 2

in 5/8" 5/8" 7/8" 7/8" 7/8" 1-1/8" 5/8" x 2 1-1/8" 7/8" x 2 1-1/8" 7/8" x 2 1-1/8" x 2 1-1/8" x 2 1-1/8" x 2 1-3/8" x 2

Liquid LinePipe Size(1)

mm 12 12 12 12 12 16 12 x 2 16 12 x 2 22 16 x 2 16 x 2 16 x 2 22 x 2 22 x 2

in 1/2" 1/2" 1/2" 1/2" 1/2" 5/8" 1/2" x 2 5/8" 1/2" x 2 7/8" 5/8" x 2 5/8" x 2 5/8" x 2 7/8" x 2 7/8" x 2

Table 20

11.2.2 Water cooled Units

Water Cooled Units - Downflow and Upflow

Model Nos.

MWD01 MWD02 MWD03 MWD04 MWD05 MWD06 MWD06 MWD07 MWD07 MWD08 MWD08 MWD09 MWD10 MWD11 MWD12

MWU01 MWU02 MWU03 MWU04 MWU05 MWU06 MWU06 MWU07 MWU07 MWU08 MWU08 MWU09 MWU10 MWU11 MWU12

No of Circuits 1 1 1 1 1 1 2 1 2 1 2 2 2 2 2

Weight

Netkg 225 235 245 290 300 435 450 455 470 488 500 640 670 755 759

lbs 496 518 540 639 661 959 992 1003 1036 1075 1102 1411 1477 1665 1673

Gross

kg 235 245 255 300 310 450 465 470 485 503 515 665 695 790 794

lbs 518 540 562 661 683 992 1025 1036 1069 1108 1135 1466 1532 1742 1750

Piping Data

Inlet PipeSize (1)

mm 22 22 22 22 28 28 35 28 35 42 42 42 42 54 54

in 7/8" 7/8" 7/8" 7/8" 1-1/8" 1-1/8" 1-3/8" 1-1/8" 1-3/8" 1-5/8" 1-5/8" 1-5/8" 1-5/8" 2-1/8" 2-1/8"

Outlet PipeSize (1)

mm 22 22 22 22 28 28 35 28 35 42 42 42 42 54 54

in 7/8" 7/8" 7/8" 7/8" 1-1/8" 1-1/8" 1-3/8" 1-1/8" 1-3/8" 1-5/8" 1-5/8" 1-5/8" 1-5/8" 2-1/8" 2-1/8"

Table 21


37



CANATAL


11.2.3 Glycol cooled Units

Glycol Cooled Units - Downflow and Upflow

Model Nos.

MGD01 MGD02 MGD03 MGD04 MGD05 MGD06 MGD06 MGD07 MGD07 MGD08 MGD08 MGD09 MGD10 MGD11 MGD12

MGU01 MGU02 MGU03 MGU04 MGU05 MGU06 MGU06 MGU07 MGU07 MGU08 MGU08 MGU09 MGU10 MGU11 MGU12

No of Circuits 1 1 1 1 1 1 2 1 2 1 2 2 2 2 2

Weight

Netkg 230 240 250 295 305 450 460 470 480 500 510 645 701 781 784

lbs 507 529 551 650 672 993 1014 1037 1058 1103 1124 1423 1545 1721 1729

Gross

kg 240 250 260 305 315 465 475 485 495 515 525 670 726 816 819

lbs 529 551 573 672 694 1026 1047 1070 1091 1136 1157 1478 1600 1798 1806

Piping Data

Inlet PipeSize (1)

mm 22 28 28 28 42 42 42 42 42 42 54 54 54 54 54

in 7/8" 1-1/8" 1-1/8" 1-1/8" 1-5/8" 1-5/8" 1-5/8" 1-5/8" 1-5/8" 1-5/8" 2-1/8" 2-1/8" 2-1/8" 2-1/8" 2-1/8"

Outlet PipeSize (1)

mm 22 28 28 28 42 42 42 42 42 42 54 54 54 54 54

in 7/8" 1-1/8" 1-1/8" 1-1/8" 1-5/8" 1-5/8" 1-5/8" 1-5/8" 1-5/8" 1-5/8" 2-1/8" 2-1/8" 2-1/8" 2-1/8" 2-1/8"

Table 22

11.2.4 Free Cooling Units

Free Cooling Units - Downflow and Upflow

Model Nos.MFD01 MFD02 MFD03 MFD04 MFD05 MFD06 MFD06 MFD07 MFD07 MFD08 MFD08 MFD09 MFD10 MFD11

MFU01 MFU02 MFU03 MFU04 MFU05 MFU06 MFU06 MFU07 MFU07 MFU08 MFU08 MFU09 MFU10 MFU11

1 1 1 1 1 1 2 1 2 1 2 2 2 2

Weight

Net kgNet lbs

kg 250 260 270 310 325 450 460 470 480 515 535 650 701 920

lbs 551 573 595 683 716 992 1014 1037 1058 1135 1179 1433 1545 2028

Gross kgGross lbs

kg 260 270 303 320 358 465 475 485 495 530 550 675 726 950

lbs 573 595 669 705 790 1025 1047 1070 1091 1168 1213 1488 1600 2094

Piping Data

Inlet PipeSize (1)

mm 22 28 28 28 42 42 42 42 42 42 54 54 54 54

in 7/8" 1-1/8" 1-1/8" 1-1/8" 1-5/8" 1-5/8" 1-5/8" 1-5/8" 1-5/8" 1-5/8" 2-1/8" 2-1/8" 2-1/8" 2-1/8"

Outlet Pipe

Size (1)

mm 22 28 28 28 42 42 42 42 42 42 54 54 54 54

in 7/8" 1-1/8" 1-1/8" 1-1/8" 1-5/8" 1-5/8" 1-5/8" 1-5/8" 1-5/8" 1-5/8" 2-1/8" 2-1/8" 2-1/8" 2-1/8"

Table 23


38


11.2.5 Air Cooled Dual Source Units

Air Cooled Dual Source Units- Downflow and Upflow

Model Nos.MDD01 MDD02 MDD03 MDD04 MDD05 MDD06 MDD06 MDD07 MDD07 MDD08 MDD08 MDD09 MDD10 MDD11

MDU01 MDU02 MDU03 MDU04 MDU05 MDU06 MDU06 MDU07 MDU07 MDU08 MDU08 MDU09 MDU10 MDU11

No of Circuits 1 1 1 1 1 1 2 1 2 1 2 2 2 2

Weight

Netkg 250 260 270 310 325 450 460 470 480 515 535 650 701 920

lbs 551 573 595 683 716 992 1014 1037 1058 1135 1179 1433 1545 2028

Grosskg 260 270 303 320 358 465 475 485 495 530 550 675 726 950

lbs 573 595 669 705 790 1025 1047 1070 1091 1168 1213 1488 1600 2094

Piping Data

Discharge(Hot Gas)

Pipe Size(1)

mm 16 16 16 16 22 22 16 22 16 x 2 28 22 x 2 22 x 2 22 x 2 28 x 2

in 5/8" 5/8" 7/8" 7/8" 7/8" 1-1/8" 5/8" 1-1/8" 7/8" x 2 1-1/8" 7/8" x 2 1-1/8" x 2 1-1/8" x 2 1-1/8" x 2

Liquid LinePipe Size (1)

mm 12 12 12 12 12 16 12.7 16 12.7 22 16 x 2 16 x 2 16 x 2 22 x 2

in 1/2" 1/2" 1/2" 1/2" 1/2" 5/8" 1/2" x 2 5/8" 1/2" x 2 7/8" 5/8" x 2 5/8" x 2 5/8" x 2 7/8" x 2

Chilled WaterInlet(1) mm 22 22 22 22 28 28 28 28 42 42 42 54 54 54

Chilled waterOutlet(1) in 7/8" 7/8" 7/8" 7/8" 1-1/8" 1-1/8" 1-1/8" 1-1/8" 1-5/8" 1-5/8" 1-5/8" 2-1/8" 2-1/8" 2-1/8"

Table 24

11.2.6 Water Cooled Dual Source Units

Water Cooled Dual Source Units - Downflow and Upflow

Model Nos.MHD01 MHD02 MHD03 MHD04 MHD05 MHD06 MHD06 MHD07 MHD07 MHD08 MHD08 MHD09 MHD10 MHD11

MHU01 MHU02 MHU03 MHU04 MHU05 MHU06 MHU06 MHU07 MHU07 MHU08 MHU08 MHU09 MHU10 MHU11

No of Circuits 1 1 1 1 1 1 2 1 2 1 2 2 2 2

Weight

Netkg 250 260 270 310 325 450 460 470 480 515 535 650 701 920

lbs 551 573 595 683 716 992 1014 1037 1058 1135 1179 1433 1545 2028

Grosskg 260 270 303 320 358 465 475 485 495 530 550 675 726 950

lbs 573 595 669 705 790 1025 1047 1070 1091 1168 1213 1488 1600 2094

Piping Data

Inlet Pipe

Size(1)

mm 22 22 22 22 28 28 25 28 35 42 42 42 42 54

in 7/8" 7/8" 7/8" 7/8" 1-1/8" 1-1/8" 1-3/8" 1-1/8" 1-3/8" 1-5/8" 1-5/8" 1-5/8" 1-5/8" 2-1/8"

Outlet PipeSize(1)

mm 22 22 22 22 28 28 25 28 35 42 42 42 42 54

in 7/8" 7/8" 7/8" 7/8" 1-1/8" 1-1/8" 1-3/8" 1-1/8" 1-3/8" 1-5/8" 1-5/8" 1-5/8" 1-5/8" 2-1/8"



Table 25


39



CANATAL


11.2.7 Glycol cooled dual source Units

Glycol Cooled Units - Downflow and Upflow

Model Nos.MED01 MED02 MED03 MED04 MED05 MED06 MED06 MED07 MED07 MED08 MED08 MED09 MED10 MED11

MEU01 MEU02 MEU03 MEU04 MEU05 MEU06 MEU06 MEU07 MEU07 MEU08 MEU08 MEU09 MEU10 MEU11

No of Circuits 1 1 1 1 1 1 2 1 2 1 2 2 2 2

Weight

Netkg 250 260 270 310 325 450 460 470 480 515 535 650 701 920

lbs 551 573 595 683 716 992 1014 1037 1058 1135 1179 1433 1545 2028

Grosskg 260 270 303 320 358 465 475 485 495 530 550 675 726 950

lbs 573 595 669 705 790 1025 1047 1070 1091 1168 1213 1488 1600 2094

Piping Data

Inlet Pipe

Size(1)

mm 22 28 28 28 42 42 42 42 42 42 54 54 54 54

in 7/8" 1-1/8" 1-1/8" 1-1/8" 1-5/8" 1-5/8" 1-5/8" 1-5/8" 1-5/8" 1-5/8" 2-1/8" 2-1/8" 2-1/8" 2-1/8"

Outlet PipeSize(1)

mm 22 28 28 28 42 42 42 42 42 42 54 54 54 54

in 7/8" 1-1/8" 1-1/8" 1-1/8" 1-5/8" 1-5/8" 1-5/8" 1-5/8" 1-5/8" 1-5/8" 2-1/8" 2-1/8" 2-1/8" 2-1/8"



Table 26

(1) Outside diameter. Closest metric equivalent

11.2.8 DX Models 01, 02 and 03 (Air, water, glycol)

40


810

1967

1950

618

663

810

663

Plan View


Figure 15. Dimensions of dx models 01, 02 and 03

11.2.9 Freecooling & dual source models 01 and02

11.2.10 DX Models 04 and 05 (Air, water, glycol, Free cooling and dual source)

41



CANATAL

810mm

1967m

m

1950m

m764mm

810mm

810mm

810m

m

Plan View

Side ViewFront View

31.89in

30.08in

31.89in

31.89in

31.8

9in

77.4

4in

76.7

7in

Figure 16. Dimensions of the freecooling & Dual source models 01 and 02

1210 764

810

1967

1950

1210

810

Plan View

Side ViewFront View

Figure 17. Dimensions of dx models 04 and 05


11.2.11 DX Models 06, 07 and 08 (Air, water, glycol, Free cooling and dual source)


42


764mm

810mm

1967

1950

1974mm

810

Plan View

Side ViewFront View

1974mm

Figure 18. Dimensions of dx models 06, 07 and 08

2738764

810

1967

1950

2738

810

Plan View

Side ViewFront View



43



CANATAL

3502mm

137.87in

764mm

810mm

1967m

m

1950m

m

810m

m

3502mm

30.08in

31.89in

77.4

4in

76.7

7in

137.87in

31.8

9in

Plan View

Side ViewFront View


Canatal...a name you can trust for all yourprecision air conditioning needs.

Canatal International Inc.,

6300 Edwards Boulevard,

Mississauga, ON L5T 2V7, Canada.

Tel: 905-405-0800

Fax: 905-405-0807

web: www.canatal.com

Associate Offices:

Analogue Holdings Ltd. Canatal Systems Ltd. N.A.C Air Conditioning Co.Ltd.

(Parent Company) (Europe, Middle East, Africa Sales Office) (China Sales Office)

17th Floor, Java Commerical Centre 2 Saturn House, Calleva Park 2 Yoyihe Road, Shimenkan

128 Java Road, North Point Aldermaston, Berkshire, RG7 8HA Nanjing, China 210007

Hong Kong United Kingdom Tel: (025) 4486348

Tel: (852) 2561 8278 Tel: +44 (0) 118 9707000 Fax: (025) 4864373

Fax: (852) 2565 7638 Fax: +44 (0) 118 9707001

This publication is the sole property of Canatal International Inc. and may not be reproduced, in whole or part,

distributed or sold without the written permission of the owners.

While every endeavour is made to ensure accuracy, Canatal International Inc. accept no responsibility or liability resulting from the use of

this information. Due to our policy of constant improvement of our products, specifications are subject to change without notice.

Canatal, the Canatal logo, CoWORK and the CoWORK logo are the registered trademarks of Canatal International Inc.

ISO 9001© 2001 Canatal International Inc.

All rights reserved

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c2003

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