Navien NR-180A User manual

NR-180(A) NP-180(A)
NR-210(A) NP-210(A)
NR-240(A) NP-240(A)
Navien Condensing Water Heater Manual
- WHAT TO DO IF YOU SMELL GAS
Do not try to light any appliance.
Do not touch any electrical switch: do not use any phone in your building.
Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s
instructions.
If you cannot reach your gas supplier, call the fire department.
- Installation and service must be performed by a qualified installer, service agency
or the gas supplier.
- Please return the “Manual” to the customer after installing.
If the information in these instructions is not followed exactly, a fire or
explosion may result causing property damage, personal injury or death.
This product warranty is valid only used in the America and Canada
but automatically be voided for other countries. (for America and
Canada unit standard only)
- Do not store or use gasoline or other flammable vapors and liquids in the vicinity
of this or other appliance.
Operation & Installation Manual

Contents
CONTENTS
Safety Instruction 3
Accessories and Optional Accessories 7
Specification 9
Component & Dimensions
- Key Components : NR-A 10
- Key Components : NP-A 11
- Dimensions : NR-A, NP-A 12
- Key Components : NR 13
- Key Components : NP 14
- Dimensions : NR, NP 15
Installation 16
Operation 65
Maintenance 90
Troubleshooting 100
Wiring Diagram 104
Components Diagram & Parts List 113

SAFETY
Safety-related information and instructions have been provided in this manual
and on the Navien water heater to warn any person(s) of potential hazards.
Read and follow all safety information and instructions throughout this manual.
It is very important to understand the safety instructions before installing,
operating or servicing Navien Water Heater.
This is safety alert symbol. It is used to alert you to potential
personal injury hazards. Obey all safety messages that follow this
symbol to avoid possible injury or death.
Indicates an imminent hazardous situation which , if not
avoided, could result in injury or death.
Indicates a potential hazardous situation which, if not
avoided, could result in injury or death.
Indicates an imminent hazardous situation which , if not
avoided, may result in minor or moderate injury.
Used whitout the safety alert symbol indicates a
potential hazardous situation which, if not avoided,
could result in property damage.
All safety messages will refer to a potential hazard. Follow the instructions in
this manual exactly to avoid the risk of injury.
Safety Related Symbols
Safety Instructions:
3

SAFETY
Safety Instructions:
4
This product must be installed and serviced by a licensed plumber, a
licensed gas fitter, or a professional service technician. Improper
installation and/or operation or installation by an unqualified person
will void the warranty.
WARNING
WARNING
Safety Precautions
Read and understand this safety information before installing,
operating or servicing this Navien Water Heater.
This manual must remain with the Navien Water Heater.
Have your installer show you the location of the gas shut-
off valve and show you how to close the valve. Close the
manual shut-off valve if the Navien Water Heater ever
becomes subjected to overheating, fire, flood, physical
damage or any other such damaging condition. And, DO
NOT operate the Water Heater again until it has been
checked by qualified personnel.
DO NOT turn on the water heater unless water and gas supplies are fully
opened.
DO NOT turn on the water heater if cold water supply shut-off valve is closed.
DO NOT use this Navien Water Heater for other than its intended purpose as
described in this manual.
DO NOT attempt to repair or replace any part of your water heater unless it is
specifically recommended in this manual. All other servicing should be referred
to an authorized technician or professional service technician.
Make certain power to water heater is “OFF” before removing the front cover for
any reason.
Label all wires prior to disconnection when servicing controls. Wiring errors can
cause improper and dangerous operation. Verify proper operaton after servicing.
Improper adjustment, alteration, service or maintenance can cause property
damage, personal injury, or death.
To prevent scalding, always check the temperature of the hot water before
showering, bathing, etc.
DO NOT attempt to change the water temperature while someone is using the
water heater.
DO NOT use parts other than those specified for this equipment.
DO NOT operate the water heater if you feel something is wrong with the unit.
DO NOT allow children to operate or otherwise handle the unit.

SAFETY
Safety Instructions:
5
this

SAFETY
Safety Instructions:
6
Improper venting may cause a build-up of carbon monoxide (CO).
Breathing carbon monoxide can cause brain damage or death. Read and
follow the above instructions carefully.
If the information in these instructions is not followed exactly, a fire or
explosion may result causing property damage, personal injury or death.
DO NOT OPERATE THE WATER HEATER. DO NOT OPERATE
ANY FAUCETS. Smell all around the water heater area for gas.
Be sure to smell near the floor because as some gas is heavier
than air and will settle near the floor.
Failure to follow the Venting Section of the Installation Manual may
result in the unsafe operation of this water heater. To avoid the risk of
fire, explosion or asphyxiation from carbon monoxide, never operate the
water heater unless it is properly vented to outside and has an
adequate air supply for proper operation.
Be sure to inspect the vent terminator and the air intake pipe annually to
ensure safe operation of the water heater.
Immediately turn off and do not use the water heater if any of the vent
pipes, vent elbows and/or the intake air pipe are :
DO NOT try to light any appliance.
DO NOT touch any electric switch.
DO NOT use any phone in your building.
Immediately call your Gas Supplier from a neighbor’s phone. Follow the
Gas Supplier’s instructions.
If you cannot reach your Gas Supplier, call 911 for police and/or the fire
department.
DO NOT return to your home until authorized by your gas supplier or the
fire department.
WHATTO DO IF YOU SMELL GAS
DANGER
COMPROMISED VENTING SYSTEM
DANGER
Ķ
Ķ
Ķ
Ķ
Ķ
Ķ
damaged in any way;
have separated at a joint;
are cracked or show evidence of corrosion, rusting or melting;
i.
ii.
iii.
WARNING

ACCESSORIES
Accessories and Optional Accessories
8
Contact your Navien Water Heater supplier for optional accessories.
2. Optional Accessories:
Description
Item
Navien Plumb Easy Valve Set
Navien Pressure Relief Valve
Navien condesate Neutralizer
Navien Ready-Link Communication Cable

SPECIFICATIONS
9
Specifications
Please review these specifications before installation to confirm proper unit selection:
As Navien is dedicated to continuous product improvement, Navien reserves the right to
change specifications and/or design and/or discontinue any model or feature without
prior notice and without incurring obligations.
Item NR-180(A)
NP-180(A) NR-210(A) NP-210(A) NR-240(A) NP-240(A)
Heat Capacity
(Input)
Flow Rate
(DHW)
Natural Gas Min: 15,000 Btuh
Max: 150,000 Btuh Min: 17,000 Btuh
Max: 180,000 Btuh Min: 17,000 Btuh
Max: 199,000 Btuh
Propane Gas Min: 15,000 Btuh
Max: 150,000 Btuh Min: 17,000 Btuh
Max: 180,000 Btuh Min: 17,000 Btuh
Max: 199,000 Btuh
35°F Rise 8.3 GPM 10.0 GPM 11 GPM
45°F Rise 6.5 GPM 7.7 GPM 8.6 GPM
77°F Rise 3.8 GPM 4.5 GPM 5.0 GPM
W17” x H28”x D14” W17” x H28”x D15” W17” x H28” xD15”
77 lbs 86 lbs 86 lbs
67 lbs 77 lbs 77 lbs
Indoor / Outdoor Wall-Hung
Forced Draft Direct Vent
Electronic Ignition
15 – 150 PSI
9”WC ~ 13.5” WC
0.4”WC ~ 4.2” WC
0.8”WC ~ 7.6” WC
5”WC ~ 10.5” WC
0.4” WC ~ 3.5” WC
0.8” WC ~ 5.9” WC
0.6" WC ~ 3.7" WC
1.0" WC ~ 5.9" WC
8”WC ~ 13.5” WC
0 GPM for “A” models (no minimum flow rate requirement),
0.5 GPM for non-“A” models
Connection
Sizes
Cold Water Inlet 3/4” NPT
Hot Water Outlet 3/4” NPT
Gas Inlet 3/4” NPT
Power Supply Main Supply 120VAC, 60Hz
Maximum Power
Consumption 200W (max 2A)
Materials Casing Cold Rolled Carbon Steel
Heat Exchangers Primary Heat Exchanger: Stainless Steel
Secondary Heat Exchanger: Stainless Steel
Venting
Exhaust (ø3”) ø3" PVC,CPVC, Polypropylene, ø3" Special Gas Vent Type BH
(Class IIIA/B/C)
Intake (ø3”) ø3" PVC,CPVC, Polypropylene, ø3" Special Gas Vent Type BH
(Class IIIA/B/C),
Vent Clearances 0” to combustibles
Safety Devices
Flame Rod,Thermal Fuse(Overheat Cut Off device)
APS, GPS, Gas-Valve Operation Detector,
Ignition Operation Detector, Water Temperature High Limit Switch,
Exhaust Temperature High Limit Switch
Accessories Plumb Easy Valve Set, Condensate Neutralizer,
Ready-Link Communication Cable
Dimensions
Weight NR-A, NP-A
Weight NR, NP
Installation Type
Venting Type
Ignition
Water Pressure (min-max)
Natural Gas Supply Pressure
(from source, Min ~ Max)
Propane Gas Supply Pressure
(from source, Min ~ Max)
Natural Gas Manifold Pressure
(min-max)
Propane Gas Manifold Pressure
(min-max)
Minimum Flow Rate

COMPONENTS & DIMENSIONS
13
Key Components: NR
No Description Navien Part No. No Description Navien Part No.
1 Intake Duct BH2505400B 17 Transformer BH1205008A
2 Fan Motor NAFA9GLPCT01 18 Exhaust Limit Switch BH1401027A
3 Flow Sensor AASS9EXFS003C 19 Secondary H/E -
4 Power Switch BH1426003A 20 Primary H/E -
5 PCB Board NACR1GS32401 21 Ignition Trans BH1201045A
6 Heater BH1501047B 22 APS Venturi BH2501413A
7 Heater Clip BH2507447A 23 Manifold PABCR180AMF_001
8 DHW Supply Adapter BH2507348B 24 Burner PABNCN30KDBN_003
9 DHW Inlet Adapter AAVC9EX00016B 25 APS NASS9EX00009
10 Syphon BH2507452C 26 Exhaust Duct BH2544004F
11 Gas Inlet Adapter BH2507722A 27 Exhaust Pipe BH2505401B
12 Main Gas valve BH0901018A 28 Air Intake Guide BH2543002C
13 GPS Venturi BH2507359C 29 Bypass Mixing Valve AAVC9EXMIX01B
14 Gas Pipe BH2507351C 30 Freeze Protect Switch BH1402001A
15 GPS NASS9EXGPS01 31 Mixing Trans BH1205013A
16 WAV AAVC9EXFC003B

COMPONENTS & DIMENSIONS
Key Components: NP
14
No Description Navien Part No. No Description Navien Part No.
1 Intake Air Duct BH2505400B 17 Transformer BH1205008A
2 Fan Motor NAFA9GLPCT01 18 Exhaust Limit Switch BH1401027A
3 Flow Sensor AASS9EXFS003C 19 Secondary H/E -
4 Power Switch BH1426003A 20 Primary H/E -
5 PCB Board NACR1GS32401 21 Ignition Trans BH1201045A
6 Heater BH1501047B 22 APS Venturi BH2501413A
7 Heater Clip BH2507447A 23 Manifold PABCR180AMF_001
8 DHW Supply Adapter BH2507348B 24 Burner PABNCN30KDBN_003
9 DHW Inlet Adapter AAVC9EX00016B 25 APS NASS9EX00009
10 Syphon BH2507452C 26 Exhaust Duct BH2544004F
11 Gas Inlet Adapter BH2507722A 27 Exhaust Pipe BH2505401B
12 Main Gas valve BH0901018A 28 Air Intake Guide BH2543002C
13 GPS Venturi BH2507359C 29 WAV NCVM9EX00005B
14 Gas Pipe BH2507351C 30 Freeze Protect Switch BH1402001A
15 GPS NASS9EXGPS01 31 Bypass Mixing Valve AAVC9EXMIX01B
16 2-Way Valve AAVC9EX00014A 32 Mixing Trans BH1205013A

Installation Warnings 17
Getting Stated 18
Check Rating Plate 19
Locating the Water Heater 20
Mounting the Unit to the Wall 21
Plumbing
- Plumbing and Water Connection Guidelines 22
- Water Piping Guidelines 23
Pressure Relief Valve 24
Disposal of condensate 25
Condensate Drain & Cleaning 26
Gas Piping 27
Measuring Gas Pressure 30
Venting
- Warning 31
- Venting Guidelines 31
- Venting Clearances 35
- Allowable 36
- Indoor Installation 37
- Vertical Vent Termination 38
- Concentric Vent Termination 39
- Outdoor Installation 40
Electrical Connections 42
Remote controller Installation 43
PCB Board Settings 44
Cascade Connection and Set-up Procedure 45
Water Heater DIP Switch Settings 57
Factory Setting of DIP Switch 60
Completing the Install 60
Installation Check List 61
INSTALLATION
Installation - Contents
16

INSTALLATION
Getting Started:
18
The appliances comply with SCAQMD 2012 requirements.
NOx emission level of less than 14 nanograms of NOx (calculated as NO )
per joule of heat output or less than or equal 20 ppm of NOx emissions
(at 3% O , dry).
2
2

INSTALLATION
Locating the Water Heater:
20
or follow local codes.