User Guide

RH180 Manual 7
Prepare for installaon
Parts included
Tools needed
Materials needed
 Make sure the water heater and its water lines are
protected from freezing. Damage due to freezing is
not covered by the warranty.
 You must follow the installaon instrucons and
those in Care and Maintenance for adequate
combuson air intake and exhaust.
 Install the vacuum relief valve per local codes.
 Massachuses 248 CMR Secon 10.14 (I) “All
potable water pressure tanks shall be provided
with a vacuum relief valve at the top of the tank
that will operate up to a maximum water pressure
of 200 P.S.I.G. and to a maximum water
temperature of 200ºF.”
INFORMATION
 If a water heater is installed in a closed water
supply system, such as one having a backow
preventer in the cold water supply line, means
shall be provided to control thermal expansion.
Contact the water supplier or local plumbing
inspector on how to control thermal expansion.
 Should overheang occur or the gas supply fail to
shut o, turn o the manual gas control valve to
the appliance.
 Keep the air intake locaon free of chemicals such
as chlorine or bleach that produce fumes. These
fumes can damage components and reduce the life
of your appliance.
 Water heater
 Temperature-Pressure Relief (T&P) Valve
 Gas Valve
 Manometer
 Pipe wrenches (2)
 Adjustable pliers
 Screwdrivers (2)
 Wire cuers
 Gloves
 Safety glasses
 Level
Tools that might be needed
 Saw
 Threading machine with
heads and oiler
 Torch set
 Copper tubing cuer
 Steel pipe cuer
Materials that may be needed
 Soap soluon
 Approved venng
 Teon tape
(recommended) or pipe
compound
 Heat tape
 Pipe insulaon
 Electrical wire and
conduit per local code
 Single gang electrical
box
 Wire nuts
 Unions and drain valves
Vacuum Relief Valve
(Not Supplied)
If required, install per local code and
valve manufacturers instrucons