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I
Instal l ation Warnings:
Read all safety warnings in the "Operating Manual". The additional safety issues outlined
below must also be followed completely when installing this Navien water heater:
A
WARNING
Follow all local codes and/or the most recent edition of the National Fuel Gas
Code (ANSI 2223.1/NFPA 54) in the USA or the Natural Gas and Propane
Installation Code in Canada (CAN/CGA 8149.1).
1.
This unit is designed for indoor installations. DO NOT operate this unit without the vent piping
connected. Exhaust gases must be completely expelled out of the building.
2.
DO NOT use this appliance if any part has been underwater. Immediately call a qualified
service technician to inspect the appliance and replace any part of the control system and any
gas control which has been underwater.
3.
Be sure not to reverse the water and gas connections as this may damage the gas valves.
4.
Water temperatures over 125
proposed water heater outlet temperature is above 125
valve (or a temperature limiting valve) for reducing point of use water temperature is
recommended to reduce the risk of scald injury. Contact a licensed plumber or the local
plumbing authority for further information.
5.
The appliance should be located in an area where leakage within the unit or at its connections
will not result in damage to the surrounding area. Navien will not be responsible for any
damage resulting from leaking if adequate drainage is not provided.
6.
DO NOT use this water heater for any purpose other than water heating and space heating.
7.
If the water quality is known to have high acidity and/or high hardness, water treatment is
recommended to maintain full warranty. Consult the local water authority.
8.
Protect against snow accumulation around the vent terminations.
pipe and the intake airpipe remain clear from obstructions at all times.
DO NOT overtighten fittings as pipe and/or fitting damage may occur causing leakage.
9.
10.
DO NOT install water heater where subject to vibtations.
11.
The vent for this appliance shall not terminate over public walkways; or near soffit vents or
crawl space vents or other area where condensate or vapor could create a nuisance or hazard
or cause property damage; or where condensate or vapor could cause damage or could be
detrimental to the operation of regulators, relief valves, or other equipment.
12.
For other than a direct vent appliance, the appliance must be located as close as practicable to
a chimney or gas vent.
13.
Should overheating occur or the gas supply fails to shut off, turn off the manual gas control
valve to the appliance.
.&
WARNING
°
F can cause severe burns instantly or death from scalds. If the
°
F, a thermostatically controlled mixing
Ensure the exhaust vent
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