COMMISSIONING
38
BURNER GAS PRESSURE TESTING AND ADJUSTMENT
The burner gas pressure must be checked and adjusted (if required) as part of
the commissioning procedure. Refer to Gas Details in the table on page 31 or
check the rating label of the water heater for the burner test point pressure with
the burner operating.
To check and adjust the burner gas pressure of the water heater:
1. Remove the access cover.
2. Close down the gas control (refer to “Close Down Procedure” on page 43)
and close the gas isolation valve to the water heater.
3. Using a small flat
bladed screwdriver,
lever and remove the
black plastic cover
surrounding the
burner pressure test
point on gas control.
4. Remove the screw
from the burner
pressure test point
on the right side of
the gas control and
attach the
manometer hose to
the test point.
5. Open the gas isolation valve fully.
6. Light the water heater and ensure the burner is operating (refer to
“Lighting the Water Heater” on page 40).
7. Take the manometer reading (burner must be operating).
The burner gas pressure should be:
1.0 kPa (±5%) for this natural gas model.
If adjustment is not required, proceed to step 9.
If adjustment is required, proceed to step 8.
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