Installation Of Gas Supply - Rinnai Rur98I Manuel D'installation Et D'utilisation

Installation of Gas Supply

WARNING
1. A licensed professional must 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
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 of
this manual 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 that 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.
INFORMATION

If in doubt about the size of the gas line, refer to an
approved pipe sizing chart
Size the gas pipe
The gas supply must be capable of handling the entire
gas load at the location. Gas line sizing is based on
gas type, the pressure drop in the system, the gas
pressure supplied, and gas line type. For gas pipe
sizing in the United States, refer to the National Fuel
Gas Code, NFPA 54. The below information is provid-
ed as an example. The appropriate table from the
applicable code must be used.
1. For some tables, you will need to determine the
cubic feet per hour of gas required by dividing the
gas input by the heating value of the gas
(available from the local gas company). The gas
input needs to include all gas products at the lo-
cation and the maximum BTU usage at full load
when all gas products are in use.
2. Use the table for your gas type and pipe type to
Cubic Feet
per Hour =
(CFH)
find the pipe size required. The pipe size must be
able to provide the required cubic feet per hour
of gas or the required BTU/hour.
Example:
The heating value of natural gas for your location is
1000 BTU/FT
BTU/HR. Additional appliances at the location require
65,000 BTU/hr. Therefore the cubic feet per hour =
(199,000 + 65,000) / 1000 = 264 FT
length is 10 feet then the 3/4 inch pipe size is capable
of supplying 264 FT
KBP Series Manual
Gas Input of all gas products (BTU / HR)
Heating Value of Gas (BTU / FT
3
. The gas input of the RUR98i is 199,000
3
/HR. If the pipe
3
/HR of natural gas.
3
)
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