AquaMAX G270VE Series - Manual (Page 19)

18
Pressure Temperature Relief Valve Running
•
Normal Operation
It is normal and desirable for the PTR valve to allow a small quantity of
water to escape during the heating cycle, however there may be a
problem if the valve continuously dribbles more than a bucket full of
water in a normal 24 hr cycle.
•
Continuous dribble
Try gently raising the easing lever on the relief valve for a few seconds
(refer to ‘Pressure Temperature Relief Valve’ on page 12). This may
dislodge a small particle of foreign matter and clear the fault. Release
the lever gently.
•
Steady flows for long period (often at night)
This may indicate the mains water pressure sometimes rises above the
designed pressure of the water heater. Ask your installing plumber to fit
a pressure limiting valve.
Warning: Never use reconditioned relief valves and never replace
the relief valve with one of a higher pressure rating.
Expansion Control Valve Running
If an expansion control valve is fitted in the cold water supply line to the
water heater, it may discharge a small quantity of water instead of the
water heaters pressure temperature relief valve. This has the benefit of
conserving energy as the discharged water is cooler (refer to the ‘Cold
Water Supply Plumbing Arrangement’ diagram on page 25 for expansion
control valve location).
Can’t Light the Pilot
•
Is there gas to the water heater?
Check to ensure the gas isolation valve on the gas supply line to the
water heater is open.
•
Is there a normal gas supply to the rest of the premises?
Try lighting another gas appliance to check if there is a normal gas
supply present. If there is no gas, call the gas supplier.
Water Heater appears to be Leaking
When the water heater is first lit, or after a large usage of hot water,
condensation may form on and drip from the grille at the front of the water
heater. During periods of heavy condensation, condensate may also form