11
MEASURING INLET GAS PRESSURE
AND TESTING GAS LEAKAGE
The appliance and its gas connections must be tested for leak and the inlet gas pressure must be
measured before placing the unit in operation for properly performing and safety.
This is only to be
done by a licensed professional.
1.
Shut off the manual gas valve on the supply gas
line.
2. Open a faucet. The unit should turn on and the
gas in the gas pipe line should purge. Leave the
faucet open to keep the unit running until the
unit shuts down due to lack of gas supply. Then
shut the faucet off.
3.
Remove the screw for the pressure port located
on the gas inlet of the water heater shown in
the diagram to the right.
4. Connect the manometer to the pressure port.
5.
Re-open the manual gas valve. Check to see
that there are no gas leaks.
6.
Open some of the fixtures that use the highest
flow rate to turn on the water heater.
7.
Check the inlet gas pressure. When the water
heater is on a maximum burn, the inlet gas
pressure within must be within the appropriate
range. (Please refer to p. 3)
• This appliance and its individual shut-off valve must be isolated from the gas supply by unplugging the
unit and turning off the main gas valve during any pressure testing of the gas supply piping system at
test pressures above 3 kPa.
1.
Remove the screw for the pressure port
located on the gas inlet.
2. Connect the manometer to the pressure
port.
3.
Check the inlet gas pressure.
