NCB-E Series Application Drawings

These drawing are intended as a guide only and not as a replacement for professionally engineered project drawings. These concept system drawings do not imply compliance with local building codes. Actual installations may vary depending on installation location & parameters and it must be done in accordance with all local building codes. Verify with

Guide Only

NCB-E Series Application Drawings

20 GoodyearIrvine, CA 92618

800-519-8794www.Navien.com

T

Check Valve Circulator

PressureReliefValve

ExpansionTank

Aquastat

Full-portBall Valve

MixingValve

DHW Circulatorw/Aquastat & Check Valve

BackflowPreventor

AirElimination

NCB-240EASME

HGas D

omes

tic

Hea

ting

S R C

NCB-210EASME

HGas D

omes

tic

Hea

ting

S R C

NCB-180EASME

HGas D

omes

tic

Hea

ting

S R C HGas D

omes

tic

Hea

ting

S R C

NCB-150EASME

20 Goodyear

Irvine, CA 92618

800-519-8794

www.navien.com

T


Drawn By: B.F. February 9, 2016

Pressure

Relief

ValveExpansion

Tank

Aquastat

Full-port

Ball Valve

Mixing

Valve

DHW Circulator

w/Aquastat & Check Valve

This drawing is intended only as a guide and not as a replacement for professionally engineered project drawings.

This concept system drawing does not imply compliance with local building codes. Actual installation may vary

depending on installation location & parameters and it must be done in accordance to all local building codes.

Verify with local building officials before commencement of system installation.

Backflow

PreventorNCB-E-AHU-BF01

Air Elimination

Zone Valve

Gas

Hydronic

Feed

Water

Domestic Hot Water

Domestic Cold Water

Condensate

AIRFLOW

Opt. AC COIL

NCB-E Series Combi-Boiler

Installation Notes:

1. 100' Total Maximum Boiler-Side

Piping Connection Length Allowed.

(NCB-E Circulator-Sp 3, High)

2. Boiler-Side Pipe Length Exceeding

100' Total or a 50MBTUH Coil Output

or More Requires Primary/Secondary

Piping Configuration with Separate

System Circulator.

3. Air Handlers with Internal or External

Circulator Requires Crossover Pipe at

A/H Unit or CH Unit to Complete

Primary/Secondary Configuration*.

* See Drawing NCB-E-AHU-P-BF01

Navien NCB-E Combi Boiler Application

with Air Handler - Direct Connection

Do

me

stic

He

atin

g

20 Goodyear

Irvine, CA 92618

800-519-8794

www.navien.com

T



Pressure

Relief

ValveExpansion

Tank

Aquastat

Full-port

Ball Valve

Mixing

Valve

DHW Circulator






Backflow

PreventorNCB-E-AHU-P-BF01

Air Elimination

Zone Valve

Gas

Hydronic

Feed

Water

Domestic Hot Water

Domestic Cold Water

Condensate

AIRFLOW

Opt. AC COIL

Navien NCB-E Combi-Boiler Application

Air Handler with Internal/External Pump


Installation Notes:

1. 200' Total Maximum Boiler-Side

Piping Connection Length Allowed.

(NCB-E Circulator-Sp 3, High)

2. Boiler-Side Pipe Length Exceeding

200' Total or a 50MBTUH Coil Output

or More Requires Primary/Secondary

Piping Configuration (A) with A/H

connection the tertiary secondary.

(A)

Optional

Circulator

Location

Do

me

stic

He

atin

g

20 Goodyear

Irvine, CA 92618

800-519-8794

www.navien.com

T



Pressure

Relief

ValveExpansion

Tank

Aquastat

Full-port

Ball Valve

Mixing

Valve

DHW Circulator






Backflow

PreventorNCB-E-NCBQuik4-BF01

Air Elimination

Zone Valve

Navien NCB-E Combi Boiler

With NCB Quik-Install Manifold Kit

Part # GFFM-MCOZUS-001

Single System Circulator with AHU Shown


Gas

Hydronic

Feed

Water

Domestic Hot Water

Domestic Cold Water

Condensate

Field Supplied Circulator Zone Panel

Shall have Dry Contacts Closed On Heat

Calls Wired to Navien NCB Unit T & T

Terminals To Activate Heat Mode

DIP Sw 7 of 8 Down (OFF) on PCBT

Circ

Panel

AIRFLOW

Opt. AC COIL

Do

me

stic

He

atin

g

20 Goodyear

Irvine, CA 92618

800-519-8794

www.navien.com

T



Pressure

Relief

ValveExpansion

Tank

Aquastat

Full-port

Ball Valve

Mixing

Valve

DHW Circulator






Backflow

PreventorNCB-E-NCBQuik4-IC-BF01

Air Elimination

Zone ValveNavien NCB-E Combi Boiler- AHU Int. Circulator




Gas

Hydronic

Feed

Water

Domestic Hot Water

Domestic Cold Water

Condensate

T

AIRFLOW

Opt. AC COIL

Do

me

stic

He

atin

g

Refer to AHU, Thermostat and Navien

Wiring Supplement Instructions

20 Goodyear

Irvine, CA 92618

800-519-8794

www.navien.com

T



Pressure

Relief

ValveExpansion

Tank

Aquastat

Full-port

Ball Valve

Mixing

Valve

DHW Circulator






Backflow


Air Elimination

Zone Valve




Single System Circulator Shown


Gas

Hydronic

Feed

Water

Domestic Hot Water

Domestic Cold Water

Condensate





DIP Sw 7 of 8 Down (OFF) on PCB

T

Circ

Panel

System Return

Do

me

stic

He

atin

g

20 Goodyear

Irvine, CA 92618

800-519-8794

www.navien.com



Pressure

Relief

ValveExpansion

Tank

Full-port

Ball Valve

Mixing

Valve

DHW Circulator






Backflow

PreventorNCB-E-1P-BF01

Air Elimination

Zone Valve



Single Circulator Zone ApplicationPurge

Valve

Gas

Hydronic

Feed

Water

Domestic Hot Water

Domestic Cold Water

Condensate

6" Min

12" Max



Calls Wired to Navien CH Unit T & T



T

Circ

Panel

System Return

Do

me

stic

He

atin

g

20 Goodyear

Irvine, CA 92618

800-519-8794

www.navien.com

T



Pressure

Relief

ValveExpansion

Tank

Aquastat

Full-port

Ball Valve

Mixing

Valve

DHW Circulator






Backflow


Air Elimination

Zone Valve




Multiple System Zone Valves Shown


Gas

Hydronic

Feed

Water

Domestic Hot Water

Domestic Cold Water

Condensate






Circ

Panel

T T T

120 to 24VAC

Transformer

System Return

Do

me

stic

He

atin

g

20 Goodyear

Irvine, CA 92618

800-519-8794

www.navien.com



Pressure

Relief

ValveExpansion

Tank

Full-port

Ball Valve

Mixing

Valve

DHW Circulator






Backflow


Air Elimination

Zone Valve



Single Circulator with Multiple Zone Valves ShownPurge

Valve

Gas

Hydronic

Feed

Water

Domestic Hot Water

Domestic Cold Water

Condensate

6" Min

12" Max






Circ

Panel

T T T

120 to 24VAC

Transformer

System Return

Do

me

stic

He

atin

g

20 Goodyear

Irvine, CA 92618

800-519-8794

www.navien.com

T



Pressure

Relief

ValveExpansion

Tank

Aquastat

Full-port

Ball Valve

Mixing

Valve

DHW Circulator






Backflow


Air Elimination

Zone Valve




Multiple System Circulators Shown


Gas

Hydronic

Feed

Water

Domestic Hot Water

Domestic Cold Water

Condensate

Circ Zone

Panel

T T TField Supplied Circulator Zone Panel





System Return

Do

me

stic

He

atin

g

20 Goodyear

Irvine, CA 92618

800-519-8794

www.navien.com



Pressure

Relief

ValveExpansion

Tank

Purge

Valve

Full-port

Ball Valve

Mixing

Valve

DHW Circulator






Backflow


Air Elimination

Zone Valve



Multiple Zone Circulators Shown

Gas

Hydronic

Feed

Water

Domestic Hot Water

Domestic Cold Water

Condensate

6" Min

12" Max

Circ Zone

Panel

T T T






System Return

Do

me

stic

He

atin

g

20 Goodyear

Irvine, CA 92618

800-519-8794

www.navien.com



Pressure

Relief

ValveExpansion

Tank

Purge

Valve

Full-port

Ball Valve

Mixing

Valve

DHW Circulator






Backflow

PreventorNCB-E-3P-1LT-BF01

Air Elimination

Zone Valve



Multiple Zone Circulators

Low Temperature Zone Shown






Gas

Hydronic

Feed

Water

Domestic Hot Water

Domestic Cold Water

Condensate

6" Min

12" Max

Circ Zone

Panel

T T T

Do

me

stic

He

atin

g

20 Goodyear

Irvine, CA 92618

800-519-8794

www.navien.com



Pressure

Relief

ValveExpansion

Tank

Wye Strainer

Full-port

Ball Valve

Mixing

Valve

DHW Circulator






Backflow

PreventorNCB-E-CI-2PDR-BF01

Air Elimination

Dirt Separator



Two-Pipe Direct Return



T

Circ

Panel

or

Cast Iron Baseboard

Cast Iron Fin Tube

Cast Iron Radiators

or

Proper dirt separation must be used when applying the Navien NCB/NHB boiler with

systems that contain ferrous or ferric materials.

Installation requires proper means of cleaning and flushing system piping prior to

start-up to avoid potentiality subjecting the NCB/NHB boiler to system contaminants.

Proper air elimination & system maintenance is required to maintain Navien warranties.

Dirt SeparatorWYE Strainer w/

Blowdown

Gas

Hydronic

Feed

Water

Domestic Hot Water

Domestic Cold Water

Condensate

Do

me

stic

He

atin

g


Shall have Dry Contacts Closed On Heat Calls Wired to Navien CH Unit

T & T Terminals To Activate Heat Mode DIP Sw 7 of 8 Down (OFF) on PCB

20 Goodyear

Irvine, CA 92618

800-519-8794

www.navien.com



Pressure

Relief

ValveExpansion

Tank

Wye Strainer

Full-port

Ball Valve

Mixing

Valve

DHW Circulator






Backflow

PreventorNCB-E-CI-2P-RR-BF01

Air Elimination

Dirt Separator



Two-Pipe Reverse Return









start-up to avoid potentiality subjecting the NCB/NHB boiler to system contaminants.



Blowdown

T

Circ

Panel

or

Cast Iron Baseboard

Cast Iron Fin Tube

Cast Iron Radiators

or

Gas

Hydronic

Feed

Water

Domestic Hot Water

Domestic Cold Water

Condensate

Do

me

stic

He

atin

g

20 Goodyear

Irvine, CA 92618

800-519-8794

www.navien.com


Drawn By: BF February 9, 2016

Pressure

Relief

ValveExpansion

Tank

Wye Strainer

Full-port

Ball Valve

Monoflo

Tee

DHW Circulator






Backflow

PreventorNCB-E-CI-PM-MONO-BF01

Air Elimination

Dirt Separator



One-Pipe (Monoflo) Distribution System



or

Cast Iron Baseboard

Cast Iron Fin Tube

Cast Iron Radiators

or




start-up to avoid potentiality subjecting the NHB/NCB boiler to system contaminants.



Blowdown

Gas

Hydronic

Feed

Water

Domestic Hot Water

Domestic Cold Water

Condensate

Do

me

stic

He

atin

g




T

Circ

Panel

20 Goodyear

Irvine, CA 92618

800-519-8794

www.navien.com



Pressure

Relief

ValveExpansion

Tank

Full-port

Ball Valve

Mixing

Valve

DHW Circulator






Backflow

PreventorNCB-E-DHWR-BF01

Air Elimination

Solenoid

Valve



DHW Recirculation Shown

S

Gas

Hydronic

Feed

Water

Domestic Hot Water

Domestic Cold Water

Condensate

6" Min

12" Max

*

System Return

DHW Circulator Requirements:

1. S.S. or Bronze Body & Impeller

* DHW Side 2.5 PSI Pressure drop @ 2 GPM

2. > 0.5 GPM to Activate Burner

3. Maximum 2 GPM

4. Programmable Timer

5. Selectable Aquastat

* Set minimum 5°F below NCB DHW Setpoint

Purge

Valve

Do

me

stic

He

atin

g

20 Goodyear

Irvine, CA 92618

800-519-8794

www.navien.com

T



Pressure

Relief

ValveExpansion

Tank

Aquastat

Full-port

Ball Valve

Mixing

Valve

DHW Circulator






Backflow

PreventorNCB-E-NPE-BF01

Air Elimination

Solenoid

Valve

NCB-E Series Combi-Boiler & NPE (A/S) Series Tankless


With NPE-A or S Tankless Water Heater

S

Gas

Hydronic

Feed

Water

Domestic Cold Water

Condensate

6" Min

12" Max

CH

Domestic Hot Water

Communication

Cable

Ga

s

Opt. DHW Recirculation – A Model

S

Do

me

stic

He

atin

g

System Return

20 Goodyear

Irvine, CA 92618

800-519-8794

www.navien.com

T



Pressure

Relief

ValveExpansion

Tank

Aquastat

Full-port

Ball Valve

Mixing

Valve

DHW Circulator






Backflow

PreventorNCB-E-2NPE-BF01

Air Elimination

Solenoid

Valve

NCB-E Series Combi-Boiler & NPE (A/S) Series Tankless


With Two NPE-A or S Tankless Water Heater

S

Gas

Hydronic

Feed

Water

Domestic Cold Water

Condensate

6" Min

12" Max

CH

Communication

Cable

Ga

s

S

CH

Domestic Hot Water

Ga

s

Opt. DHW Recirculation

NPE– A Models

Communication

Cable

Do

me

stic

He

atin

g

System Return

20 Goodyear

Irvine, CA 92618

800-519-8794

www.navien.com


Pressure

Relief

Valve Expansion

Tank

Wire

SpliceFull-port

Ball Valve

Mixing

Valve

Storage

Vessel

DHW Circulator






Drawn By: B.F. NCB/NCB-E-Wire-BF February 9, 2016

Navien NCB/NCB-E Combi Series

Air Handler Unit Wire Diagram Example

(Thermostat is Control Center)

NCB/NCB-E Series Combi Boiler

Cooling Unit

Contactor

(Optional)

RH RC W Y G C

Typical Programmable Thermostat

R C G W

Typical AHU

Navien NCB/NCB-E PCB

CN23 CN10

A/H T/S

Notes:

6 wires - Navien to Thermostat with Cooling (4 required, no cooling)

3 wires – Navien to AHU

2 wires – Navien to AC Condensor

(All splices shown at Navien unit for wiring ease)

1. Remove factory jumper at thermostat (RH to RC) to isolate

AHU and Navien for dual transformer operation

2. Set programable thermostat for electric heat mode

(This is done with manual switch or programming, follow

manufacturer instructions)

3. Using terminals will disrupt AHU fan signal during call for heat

when domestic is actvated on the combi boiler (feature is not

required to be used, direct connecting G to AHU).

* This closes RC to G (AHU fan) & RH to W (boiler heat call).

1

2 *ELE HT

ON

3

NCB-E Series Application Drawings

Documents

Transcript of NCB-E Series Application Drawings