Table of Contents
Advertisement
COMMISSIONING THE WATER HEATER
THE WATER HEATER MUST BE COMMISSIONED AND CERTIFIED IN ACCORDANCE WITH AS
3814, APPENDICES A-F.
COMMISSIONING MUST ONLY BE UNDERTAKEN BY A PROPERLY QUALIFIED AND IN MOST
CASES APPROPRIATELY LICENSED PERSON WHO IS FAMILIAR WITH THE COMMISSIONING
REQUIREMENTS OF AS 3814. ALL REGULATORY AUTHORITIES REQUIRE THE APPLIANCE AND
ITS INSTALLATION TO BE INSPECTED AND CERTIFIED.
The MVB MUST be commissioned by Rheem Service only. Contact Rheem Service on 131 031 to
arrange for commissioning.
However, it is recommended the following actions be undertaken prior to commissioning to avoid
additional charges if commissioning cannot take place because the system is not ready.
Pre Start-up
TO FILL THE WATER HEATER
Mechanical/Process Heating Applications
A 60 PSI (415 kPa) pressure relief valve is fitted to 'H' model water heaters.
•
If a header tank is fitted, ensure it is filled with water.
•
Open the isolation valve on the inlet and outlet of the water heater.
•
Bleed air from the system at all high points to ensure that the entire system is filled with water.
•
Manually open air vent on the expansion tank until water appears, then close vent.
•
Check the pipe work for leaks at operating pressure.
Water Heating Applications
A 150 PSI (1000 kPa) pressure relief valve is fitted to 'W' model water heaters and is required to be
fitted to 'H' models used in high temperature DHW applications . The storage tank may be fitted with a
temperature and pressure relief valve equal to, or lower than, this valve pressure. An expansion control
valve may also have been installed. The maximum supply pressure should be 20% below the lowest
relief valve pressure setting in the system.
Fill system with water. Purge all air from system before heater operation by opening all water discharge
outlets throughout the building.
•
Open all building hot water tap(s) (don't forget the showers) and supply cock(s) and valve(s) in the
system.
•
Open the isolation valves fully on the cold, flow / return and hot water branches to the storage tank(s)
and the water heater.
•
Open the cold water isolation valve on the cold water line to the storage tank(s). Air will be forced
out of the taps.
•
Close each tap as water flows freely from it.
•
Check the pipe work for leaks at operating pressure.
CAUTION: An air vent valve should be installed at the highest point in the system for proper
operation. If water piping is located higher than the water heater header, an air vent valve should be
located at the highest point in the installed system.
COMMISSIONING
101
Advertisement
Table of Contents
