COMMISSIONING
39
8.
Natural gas model:
Remove the temperature adjusting dial from the front
of the gas control valve by using a small flat bladed screwdriver to
carefully lever the dial and pull away from the gas control valve.
Using a small flat bladed screwdriver, rotate the burner pressure
adjustment screw (P.R.ADJ) clockwise to increase the burner pressure or
anticlockwise to decrease the burner pressure until the manometer reads
1.0 kPa.
After adjusting the burner gas pressure refit the temperature adjusting dial.
Propane gas model:
Remove the gas regulator cap from the top of the
regulator by rotating anticlockwise using a flat bladed screwdriver.
Using a No. 2 Phillips head screwdriver, rotate the adjustment point
clockwise to decrease or anticlockwise to increase the burner gas
pressure until the manometer reads 2.7 kPa.
After adjusting the burner gas pressure refit the regulator cap.
Note:
If the test point pressure cannot be adjusted to within 5% of the
specified value for either a natural gas or propane gas model, complete
this procedure and phone Rheem Service or their nearest Accredited
Service Agent to arrange for an inspection.
9.
Close down the gas control valve (refer to
page 43) and close the gas isolation valve to the water heater.
10. Remove the manometer hose from the burner pressure test point and
replace test point screw.
11. Open the gas isolation valve fully.
12. Light the water heater and ensure the burner is operating (refer to
on page 40).
13. Check the burner pressure test point for leaks.
14. Replace the black plastic cover surrounding the burner pressure test point
on gas control by pushing back into position.
15. Replace the access cover.
TO TURN OFF THE WATER HEATER
If it is necessary to turn off the water heater on completion of the installation,
such as on a building site or where the premises is vacant, then:
Shut down the gas control (refer to
on page 43).
Close the gas isolation valve at the inlet to the gas control.
Close the cold water isolation valve at the inlet to the water heater.
