Navien NPE-180A2 User manual

1
󱂓Unpacking
Navien Water Heater
User’s Information
Manual, Installation &
Operation Manual
Wall Mounting
Bracket
Tapping Screws and
anchors
Vent Terminators
Wall Flanges
Spare Parts
High Altitude
Conversion Kit (NG
Model Only)
Model
NPE-180A2 / 210A2 / 240A2
NPE-150S2 / 180S2 / 210S2 / 240S2
Quick Installation Guide
STEP 1 Before Installing
Read the Installation & Operation Manual before installing.
This product must be installed and serviced by a licensed plumber,
a licensed gas tter, or a professional service technician. Navien is
not liable for any damages or defects resulting from improper
installation.
When applicable, the installation must conform with Manufactured
Home Construction and Safety Standard, Title 24 CFR, Part 3280
and/or CAN/CSA Z240 MH Series, Mobile Homes.
WARNING
Follow all local codes and/or the most recent edition of the National Fuel Gas Code (ANSI
Z223.1/NFPA 54) in the USA, or the Natural Gas and Propane Installation Code in Canada
(CAN/CGA B149.1).
Safety
DO NOT install in areas with excessively high humidity.
Location Requirements
Select the best location on “Choosing an Installation Location” in the Installation &
Operation Manual.
Allowable minimum clearances
Top
Back
Side
Side
Front
Bottom
Clearance from: Indoor
Installation
Outdoor
Installation
Top 9 in (229 mm)
minimum
36 in (900 mm)
minimum
Back 0.5 in (20 mm)
minimum
0.5 in (20 mm)
minimum
Front 4 in (100 mm)
minimum
24 in (600 mm)
minimum
Sides 3 in (76 mm)
minimum
3 in (76 mm)
minimum
Bottom 12 in (300 mm)
minimum
12 in (300 mm)
minimum
STEP 2 Installing
󱂔Checking the Rating Plate
>
Rating Plate, *Plaque Signalétique
Direct Vent Automatic Instantaneous Water Heater *Chauffe-eau instantané automatique à évent direct
For Indoor, Outdoor or Manufactured Home (Mobile Home) Installation *Pour installation dans une maison préfabriquée (mobile)
Navien, Inc.
20 Goodyear, Irvine, CA 92618
Tel: [phone]
Orifices necessary for LP conversion are provided. *Les injectures nécessaires à la conversion au GPL sont fournis.
Failure to use the correct gas can cause problems which can result in death, serious injury or property damage. *Le fait de ne pas
utiliser le bon gaz peut causer des problèmes qui peuvent mener à la mort, causer des blessures graves ou endommager la propriété.
Consult your installation manual for more information. *Consultez votre manuel d’installation pour plus d’information.
Suitable for combination water (potable) heating and space heating and not suitable for space heating applications only.
*Convient au chauffage combiné de l’eau (potable) et des locaux, mais non au chauffage des locaux seulement.
This appliance is certified for use at altitudes up to 4,500 ft (1,370 m) in accordance to the latest CAN/CGA 2.17-High Altitude Installation
procedures at normal manifold pressure. For installation instructions at altitudes higher than 4,500 ft, please contact Navien. *Cet appareil
est certifié pour une utilisation à des altitudes de 0 à 4,500 pieds (1,370 m) conformément aux toutes les procédures d’installation à haute
altitude CAN/CGA 2.17 à une pression normale. Pour les installations à élévations en haut de 4,500 pieds, appeler le bureau de Navien.
This appliance must be installed in accordance with local codes, or in the absence of local codes, the National Fuel Gas Code, ANSI
Z223.1/NFPA 54 or the CSA B149.1, Natural Gas and Propane Installation Code. *Cet appareil doit être installé selon les règlements
locaux, ou en l’absence de tels règlements, selon le National Fuel Gas Code, ANSI Z223.1/NFPA 54, ou les, Code d'installation du gaz
natural et du propane, CSA-B149.1.
Model No., *Numéro de modèle
NPE-210A2
Max. Input Rating, *Entrée GPL max.
180,000 Btu/h
Recovery Rating, *Calibre de recouvrement
Max. Inlet Gas Pressure, *Pression max. de gaz d’entrée
Min. Inlet Gas Pressure, *Pression min. de gaz d’entrée
Manifold Pressure, *Pression d’admission
Electrical Rating, *Régime nominal électrique
Max. Water Pressure, *Pression d’eau max.
Type of Gas, *Type de gaz
NG
Min. Input Rating, *Débit calorifique max.
19,900 Btu/h
265 Gallons/Hour, *gallons/heures
10.5 Inches W.C. *pouces W.C.
3.5 Inches W.C. *pouces W.C.
-0.36 Inches W.C. *pouces W.C.
AC *c.a. 120 Volts 60Hz, less than 2 amperes, *Utilise moins de 2A
150 psi *lb/po2 ANSI Z21.10.3 - 2017 · CSA 4.3 - 2017
FOR YOUR SAFETY *POUR VOTRE SÉCURITÉ
Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other gas appliances. *Ne rangez
pas et n'utilisez pas d'essence ou d'autres liquides ou vapeurs inflammables près de cet appareil ou de tout autre appareil électroménager.
This water heater is congured for Natural Gas from the factory. If conversion to Propane Gas (LP) or
Natural Gas (NG) is required, the optional Gas Conversion Kit must be used. This kit is not supplied
with the water heater.
WARNING
·Before connecting the gas supply, determine the gas type and pressure for the water heater by
referring to the rating plate. Use only the same gas type indicated on the rating plate. Using a
dierent gas type will result in abnormal combustion and malfunction of the water heater. Gas
supplies should be connected by a licensed professional only.
·The appliance and its gas connection must be leak tested before placing the appliance in
operation.
·This water heater cannot be converted from natural gas to propane or vice versa without a
Navien gas conversion kit. Do not attempt a eld conversion of this water heater without a
Navien gas conversion kit. Doing so will result in dangerous operating conditions and will void
the warranty.
Navien Inc. is not liable for any property damage and/or personal injury resulting from
improper conversions.
󱂕Mounting on the Wall
>
CAUTION
Do not install the water heater on drywall without proper reinforcement.
2Secure the
mounting bracket
to the wall with
the tapping screws
and anchors.
3Lift up the water heater, rest the unit on the
hooks provided on the wall bracket on the wall.
1Drill in the supplied anchor bolts after
considering where the vent termination
will be located.
󱂖Removing the Front Cover
>
Remove the 4 screws.

2
󱂗Gas Piping Connections
>
Gas meter’s capacity ≥
Total gas capacity of
connected appliances
The water heater is
recommended to be
the rst appliance to
be connected to the
gas supply line.
Gas Supply Line
Gas regulator
Gas Inlet Adapter
Bottom View
Example:
Gas meter
425 CFH ≥Water heater 195 CFH +Furnace 58.8 CFH +Domestic gas stove 63.7CFH
* 1 CFH=1,020 Btuh
1/2" rigid pipe can be used; refer to the sizing tables in the Installation & Operation
Manual for limitations. Avoid using 1/2" corrugated connectors or tubing as noise may
occur.
󱂙Condensate Drain Connection
>
A condensate drain pipe must be connected to the 1/2" condensate outlet tting at the
bottom of the unit and water must be poured into the exhaust connection to ll the
condensate trap.
The end of the 1/2" (NPT) plastic piping should drain into a laundry tub or into a oor
drain.
Note Do not submerge the end of the pipe in water.
NPT 1/2in
Internal Recirculation
Pressure
Relief Valve
Shuto
Valve
Hot Water Supply
Union
Full port
Gas Valve
Gas Supply
Cold Water
Supply
Condensate Drain
External Recirculation using the Cold Water Inlet
Pressure
Relief Valve
Union
Full port
Gas Valve
Gas Supply
Expansion Tank
Hot Water Supply
Recirculation Line
Shuto Valve
Condensate Drain
Cold Water Supply
Check Valve
External Recirculation using the Recirculation Inlet
Pressure
Relief Valve
Union
Full port
Gas Valve
Gas Supply
Expansion Tank
Hot Water Supply
Recirculation Line
Shuto Valve
Condensate Drain
Cold Water Supply
Check Valve
Internal Recirculation Settings External Recirculation Settings
Press the Menu button ( ) to access
the Main menu, and select 1.
Recirculation Setting > 3. Internal
Recirculation by pressing the OK
button ( ).
Model Step 1 Step 2 Step 3
A-type Int.
Recirc
Always On N/A
Intelligent N/A
Weekly Schedule
Set
Press the Menu button ( ) to access
the Main menu, and select 1.
Recirculation Setting > 2. External
Recirculation by pressing the OK
button ( ).
Model Step 1 Step 2 Step 3
A-type Ext.
Recirc
Use Ext.
Pump
Yes/No
Always On
Intelligent
Weekly
On-demand
󱂘Water Piping Connections (NPE-180A2/210A2/240A2)
>
To the laundry tub
Direct to the
external drain
External drain
To the laundry tub via a
condensate pump
To the
drain via a
neutralizer
Condensate
Trap
Water

3
󱂚Venting
>
󱂛Electrical Connections
>
Vent Termination Options
Indoor Horizontal Vent Termination Vertical vent termination
12" (300mm) min.
12" (300mm) min.
Interior view
Intake Air Exhaust Gas
12" (300 mm) min.
12" (300 mm) min.
Exterior view
12" min. from any
obstruction above,
below, left, or right
12" (300 mm) min.
12" (300 mm) min.
36" (900 mm) min.
Sidewall vent termination
Concentric Vent Termination
Sidewall installation
Combustion Air
Combustion Air
1" (25mm) min
Maintain 12" min.
clearance above
highest anticipated
snow level or grade.
Vent
Roof installation Image of outdoor vent cap
Vent
Vent
Combustion Air
Maintain 12" min.
(18" min. for Canada)
clearance above
highest anticipated
snow level maximum
of 24" above roof.
Combustion
Air
Side
Bottom
Intake Air
Exhaust Gas
Top
Front
Side
Back
Venting Length
4” pipe venting 3” pipe venting
8
1
3
7
2
Maximum Length 150'
Maximum number
of elbows: 8
3-to-4 inch
6
1
3
4
5
2
Maximum number
of elbows: 6
Maximum Length 70"
·90˚ elbow = 5 linear feet of venting
·45˚ elbow = 3 linear feet of venting
·90˚ elbow = 5 linear feet of venting
·45˚ elbow = 3 linear feet of venting
Exhaust Vent Piping Materials
Venting requirements dier in the US and Canada. Consult the following chart or the
most recent edition of ANSI Z223.1/NFPA 54 or CAN/CGA B149.1, as well as all
applicable local codes and regulations when selecting vent pipe materials. Do not use
cellular core PVC (ASTM F891), cellular core CPVC, Radel® (polyphenolsulfone) for the
exhaust vent.
Navien recommended venting materials
Locale Recommended Vent Materials
USA
·PVC/CPVC Schedule 40 or 80 (Solid Core) - UL1738-certied materials are
approved for use
·Approved Polypropylene*
·Approved Stainless Steel
Canada*
·Type BH Special Gas Vent Class IIA (PVC)
·Type BH Special Gas Vent Class IIB (CPVC)
·Type BH Special Gas Vent Class IIC (Polypropylene/Stainless Steel)
* Refer to the manufacturer’s literature for detailed information on approved vent materials.
** For installation in Canada, eld-supplied plastic vent piping must comply with CAN/CGA B149.1 (latest
edition) and be certied to the Standard. For Type BH Gas Venting Systems, ULC-S636. Components of
this listed system must not be interchanged with other vent systems or unlisted pipes or ttings. All
plastic components and specied primers and glues of the certied vent system must be from a single
system manufacturer and must not be intermixed with another system manufacturer’s parts. The
supplied vent connector and vent termination are certied as part of the water heater.
Remote Controller Connection Power Connection
120 V AC 60 Hz
Min. 2 Amp current with proper
grounding
CAUTION
Using abnormally high or low AC
voltage may cause abnormal operation,
thereby causing re which reduces the
life expectancy of this product.
CAUTION
Disconnect the power to
the water heater before
installing the remote
controller.
Safety
DO NOT touch
the power
cord with wet
hands.
DO NOT allow
the water
heater to be
exposed to
excessive
amounts of
water.
Conrmation of DIP Switch Settings
1 2
ON
·2-switch Panel:
Switch Function Setting
2 Temperature Lock
Temperature can be set. OFF
Temperature cannot be set. ON

4
STEP 3 After Installing
󱂓Opening All the Valves
>
Gas Valve
Closed Open
Power ON Adjust the Water Temperature View Basic Information Resetting the Water Heater
To turn the water heater on, press the Power
button ( ).
When the power is on for the rst time, you
must complete the start-up wizard. The
temperature will appear on the front panel
display after then when the power is on.
Press the Up button ( ) or the Down button ( )
until the desired temperature appears on the
display. You can adjust the temperature while
the display is ashing. Once the display stops
ashing, the temperature setting is stored.
To access to view the water heater’s operating
conditions, congure the DHW temperature, or
review the error history, press the Menu button ( ).
Note If resetting does not solve the problem, refer to the troubleshooting
section of the User’s Information Manual or contact the service center.
If an error message appears, you can try resetting
the water heater to resolve the problem. To reset
the water heater, press the Back button ( ).
1
Open Closed
2 3 4 5
Shut o the manual gas valve. Open a hot water faucet to turn
on the unit.
Shut o the hot water faucet. Remove the 4 screws of the front
cover assembly.
Loosen a screw two or three turns and
connect a manometer to the pressure
port.
6
Open
7 8
NG: 3.5”–10.5”WC
LP: 8.0”–13.0”WC
Recommended
Gas Pressure Settings: Gas supply
Adjust the inlet gas pressure
with gas regulator.
Re-open the
manual gas valve.
Open several xtures that have
high ow rates.
Check the inlet gas pressure reading on the manometer.
CAUTION
The Navien water heater cannot operate properly without sucient inlet gas pressure and volume. The instructions on how to check the inlet gas pressure are stated above. THIS IS ONLY TO BE DONE BY A
LICENSED PROFESSIONAL.
If not,
Navien, Inc.
20 Goodyear, Irvine, CA 92618
Tel: [phone], Fax: [phone]
www.NavienInc.com
󱂖Installing the Front Cover
>
󱂗Ensure Maximum Water Flow
>
After using the water heater for the rst 10 minutes, please stop using it and clean the
cold water lter and recirculation water lter of any trapped debris.
󱂘Final Check
>
A trial run should be performed in accordance with the Installation checklist listed in
the Installation & Operation Manual.
󱂔Operating the Water Heater
>
󱂕Measuring the Inlet Gas Pressure
>