Connect The Gas Supply - Rinnai SENSEI RSC160i Installation And Operation Manual

4. 1 0

Connect the Gas Supply

WARNING
• A trained and qualified professional must
install the gas supply.
• Turn off 120V power supply.
• Turn off the gas.
• Gas is flammable. Do not smoke or
provide other ignition sources while
working with gas.
• Do not turn on the water heater or gas
until all fumes are gone.
4. 1 0. 1 Instructions
To connect the gas supply, follow the instructions
below:
1. Install a manual gas control valve 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 water heater.
2. Check the type of gas and gas supply
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 water heater to match the gas
type.
3. 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 section "3.4
Specifications" with all gas appliances
operating.
4. Before placing the appliance in operation, all
joints including the heater must be checked
for gas tightness by means of soap, gas
leak detector solution, 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.)
Rinnai Tankless Water Heater Installation and Operation Manual
5. Use approved connectors to connect the
water heater to the gas line. Purge the gas
line of any debris before connection to the
water heater.
6. Any compound used on the threaded joint of
the gas piping shall be a type that resists the
action of liquefied petroleum gas (propane/
LPG).
7. 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. If in doubt about the size of
the gas line, refer to the "Gas Pipe Sizing
Reference Tables" section on the next page.
8. Perform a leak and pressure test prior
to operating the water heater. If a leak is
detected, do not operate the water heater
until the leak is repaired.
Figure 61
Gas connection 3/4 in.
MNPT connection
57