Main Unit and Piping
Electrical
Test Operation
Reference
37
5. Fuel Gas Piping Installation
5.
Fuel Gas Piping Installation
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The gas piping for the outdoor unit must be installed as shown below.
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The device shown as
1
in the drawing below must be installed. This device is for servicing the fuel system.
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Install the devices shown as
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Use the valve indicating the “on” and “off” positions.
2
and
3
as necessary. These devices are for checking the supplied gas pressure
and filtering the gas.
Warning
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Use only the fuel gas indicated on the name plate.
Using wrong type of fuel gas could cause incomplete combustion or could damage the out-
door unit.
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Always perform a gas leakage test after connecting the piping.
If there should be a gas leakage, a fire or an explosion could occur.
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Use soapy water or a gas leakage detector for performing the gas leakage test.
Using a flame reaction test could cause a fire or an explosion.
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Always use a reinforced gas hose between the gas valve on the fuel gas piping and
outdoor unit.
Failure to do so could cause a gas leakage.
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Install the piping so that the fuel gas pressure at the inlet port of the outdoor unit is
equal to the pressure required by the gas supply standard defined by the gas suppli-
ers.
Incorrect pressure of fuel gas could cause incomplete combustion or malfunction of the unit.
Important reminder
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Do not apply pressure of over 0.6 psig (4.2 kPa) when testing the fuel gas line for leakage.
Doing so could damage the regulator inside the unit.
Gas fuel piping
connection (R3/4)
Rear side of outdoor unit
2 Pressure check tap
3 Strainer
1 Gas valve
ON
OFF
Reinforced gas hose
Summary of Contents for AWGP180E1NHS
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