COMMISSIONING
37
COMMISSIONING THE WATER HEATER
THE WATER HEATER MUST BE COMMISSIONED AND CERTIFIED IN ACCORDANCE WITH AS 3814,
APPENDICES A-F.
Refer to “Operating the Water Heater” section on page 39 for instructions on filling and lighting the water heater.
Refer to “Component Checks and Adjustment Procedures” on page 40 for instructions on adjustment of the water
heater.
OPERATIONAL CHECKS
Turn on water heater and circulation pump and verify flow switch operation (refer to “To Turn on the Water
Heater” on page 39).
Test the operation of the water heater with no gas flow to confirm its operation up to lockout stage and then
turn off the power to the water heater.
Open the gas isolation valve and switch on power to the water heater.
With the main burner lit and at high fire, check the gas inlet pressure (refer to “Gas Inlet Pressure Check” on
page 40).
Check the water heater gas train and components for gas leaks using soapy water. NOT A NAKED FLAME
Set the burner gas pressure to that shown on the rating label (refer to “Burner Gas Pressure Adjustment” on
page 40).
Make a visual check of the burners. The flame should be blue with a well defined pattern. A yellow or floating
flame indicates restricted air openings or an incorrect burner gas pressure setting.
Verify that the high limit thermostat is operating and set correctly (refer to “High Limit Thermostat Adjustment”
on page 42).
For indoor installations check that the flue is drawing correctly.
Check operation of the water pressure relief valve.
It is normal for the water heater to produce some smoke and possibly condensation for the first thirty (30)
minutes of operation from new (refer to “Safety Precautions” on page 35).
If the installation is for a closed loop water source heat pump, perform the “Closed Loop Water Source Heat
Pump Commissioning Procedure” on page 38.
Explain to the responsible officer the functions and operation of the water heater.
Warning: Upon completion of the installation and commissioning of the water heater, leave this guide with the
responsible officer. DO NOT leave this guide inside of the cover of the water heater, as it may interfere with the
safe operation of the water heater or ignite when the water heater is turned on.
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