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To measure the inlet gas pressure:
1. Shut off the manual gas valve on the gas supply
line.
OPEN
CLOSE
Gas Valve
2. Turn on the boiler. On the front panel, press the
Back button (
) and the Menu button (
simultaneously for 3 seconds, and then rotate
the Command dial (
Operations.
3. Press the Command dial (
operation mode.
4. Rotate the Command dial (
5. 2nd Max, and then press the command dial
(
) to select the operation mode.
5. Press the Back button (
normal operation mode.
6. Run space heating. The gas in the gas supply
line will be purged.
7. Leave the boiler on until the boiler shuts down
due to a lack of gas supply, and then turn off the
boiler.
OPEN
CLOSE
Opened Closed
)
) to move to 7. Special
) to enter special
) to move to
) twice to return to
8. Unfasten the 4 latches (2 at the top and 2 at the
bottom) to remove the front cover and gain
access to the internal components.
9. Loosen the screws indicated in the figure below
and connect a manometer to the pressure port.
Reset the manometer to zero before use.
10. Re-open the manual gas valve and check for
leaks.
11. Activate multiple zones to ramp the boiler up to
its maximum firing rate.
12. When the boiler reaches its maximum firing
rate, check the inlet gas pressure reading on the
manometer. The gas pressure must fall within
the ranges specified on page 6.
Digital pressure
manometer
Connecting the Gas Supply
51
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