Rinnai RH180 Operation And Installation Manual page 7

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."
Vacuum Relief Valve
(Not Supplied)
If required, install per local code and
valve manufacturers instruc ons
INFORMATION
If a water heater is installed in a closed water
supply system, such as one having a backflow
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 off, turn off 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.
Prepare for installa on
Parts included
Water heater
Temperature-Pressure Relief (T&P) Valve
Gas Valve
Tools needed
Manometer
Pipe wrenches (2)
Adjustable pliers
Screwdrivers (2)
Wire cu ers
Tools that might be needed
Saw
Threading machine with
heads and oiler
Torch set
Materials needed
Soap solu on
Approved ven ng
Materials that may be needed
Heat tape
Pipe insula on
Electrical wire and
conduit per local code
RH180 Manual
Gloves
Safety glasses
Level
Copper tubing cu er
Steel pipe cu er
Teflon tape
(recommended) or pipe
compound
Single gang electrical
box
Wire nuts
Unions and drain valves
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