Quick Installation Guide
Model
NCB-180/210/240
1
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 fitter, 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.
Safety
DO NOT install the boiler in areas with excessively high humidity.
Location Requirements
Select the best location on “Choosing an Installation” in the Installation &
Operation Manual.
Allowable minimum clearances
STEP 2 Installing
Unpacking
Checking the Rating Plate
This boiler is configured for Natural Gas
from the factory. If conversion to Propane
Gas in required, the conversion kit supplied
with the boiler must be used.
Mounting on the Wall
Removing the Front Cover
Remove the
4 screws
Lift up the boiler, rest the unit on the
hooks provided on the wall bracket
on the wall.
Secure the mounting bracket
to the wall with the tapping
screws and anchors.
Drill in the supplied anchor
bolts after considering where
the vent termination will be
located.
CAUTION
Do not install the boiler on dry walls without proper reinforcement.
WARNING
•
Before connecting the gas supply, determine the gas type and
pressure for the boiler by referring to the rating plate. Use only the
same gas type indicated on the rating plate. Using a different gas
type will result in abnormal combustion and malfunction of the
boiler. 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 boiler cannot be converted from natural gas to propane or vice
versa without a Navien gas conversion kit. Do not attempt a field
conversion of this boiler without a Navien gas conversion kit. Doing
so will result in dangerous operating conditions and will void the
warranty.
Navien America Inc. is not liable for any property damage and/or
personal injury resulting from improper conversions.
Navien Combination Boiler
User’s Information Manual,
Installation & Operation Manual
Wall mounting bracket
Tapping screws and anchors
Vent terminators
Wall flanges
Conversion Kit
Spare Parts
Pressure Relief Valve (30PSI)
Flow Restrictors
Clearance Indoor Installation
Top
9 in (229 mm) minimum
Back
0.5 in (13 mm) minimum
Front
4 in (100 mm) minimum
Sides
3 in (76 mm) minimum
Bottom
12 in (300 mm) minimum
Top
Back
Side
Side
Front
Bottom
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).
