Installation Of Gas Supply - Rinnai RH180 Operation And Installation Manual

Installation of Gas Supply

WARNING
1. If you are not knowledgeable or qualified to
install gas lines or connections, then contact a
licensed professional to install the gas supply.
2. Turn off 120v power supply.
3. Turn off the gas.
4. Gas is flammable. Do not smoke or provide other
ignition sources while working with gas.
5. Do not turn on the water heater or gas until all
fumes are gone.
General Instructions
In order to access the gas connections, remove the
screws that attach the lower enclosure to the
assembly
Gas Connection (1/2" MNPT)
24
MUST DO

A manual gas control valve must be placed in the
gas supply line to the water heater. A union can be
used on the connection above the shut off valve
for the future servicing or disconnection of the
unit.

Check the type of gas and the gas inlet pressure
before connecting the water heater. If the water
heater is not of the gas type that the building is
supplied with, DO NOT connect the water heater.
Contact the dealer for the proper unit to match the
gas type.

Check the gas supply pressure immediately
upstream at a location provided by the gas
company. Supplied gas pressure must be within
the limits shown in the Specifications section with
all gas appliances operating.

Before placing the appliance in operation all joints
including the heater must be checked for gas
tightness by means of leak detector solution, soap
and water, or an equivalent nonflammable
solution, as applicable. (Since some leak test
solutions, including soap and water, may cause
corrosion or stress cracking, the piping shall be
rinsed with water after testing, unless it has been
determined that the leak test solution is non-
corrosive.)

Use approved connectors to connect the unit to
the gas line. Purge the gas line of any debris
before connection to the water heater.

Any compound used on the threaded joint of the
gas piping shall be a type which resists the action
of liquefied petroleum gas (propane / LPG).

The gas supply line shall be gas tight, sized, and so
installed as to provide a supply of gas sufficient to
meet the maximum demand of the heater and all
other gas consuming appliances at the location
without loss of pressure.

Always check all gas pipe connections and fittings
for leaks before operating the water heater. Use
soapy water on all fitting and visually inspect for
bubble formation. Rinse off soapy water and wipe
dry.
INFORMATION

Refer to an approved pipe sizing chart if in doubt
about the size of the gas line.
RH180 Manual