Specifications

Stellar Service Instructions REV: D
Date of Issue: 14/09/2007
This document is stored and maintained electronically by Service. All printed copies not bearing this statement in RED are deemed “uncontrolled”.
19
FAULT FINDING – CHART 3
Leaking Water Heater
3
Is
the water leak
intermittent?
Leak is probably condensate formed in
the combustion chamber during the
heating cycle. Large quantities of
condensate can be produced during cold
weather or after large drawoffs. May also
be evident on initial lighting.
Normal Operation
YES
Is
the T&PR
valve continuously
discharging
water?
NO
The continuous addition of cold water
will cause excessive condensate to be
produced and will also cause
increased energy costs
YES
Is
the water supply
pressure above
1120kPa?
Check for crossed water connection
Replace the temperature and pressure
relief valve
Existing Pressure limiting valve faulty -
Replace
Fit a pressure limiting valve if not already
fitted
YES
Is
the outlet
extension fitting
leaking?
NO
Is
the inlet
extension fitting
leaking?
NO
Is
the anode/s
leaking?
NO
Remove the anode and repair leak using
teflon thread tape
Is
the gas
control sheath
leaking?
Remove the sheath and repair leak using
teflon thread tape
NO
YES
YES
Inner Cylinder may be leaking. Check for
sounds of hissing water onto flue lining
Replace water heater
NO
WARNING: Water under pressure and at
temperatures up to 70 degrees may be present.
Isolate water supply to water heater and relieve
pressure through a hot tap prior to removing fittings
Is
the T & PR Valve
extension fitting
leaking?
Remove the extension fitting and repair
leak using teflon thread tape
YES
NO
Is
the water
temperature above
85 degress?
5.1
NO
YES
Is
the correct
T & PR valve
fitted?
NO
YES
Replace the T & PR valve with one of the
correct pressure rating.
Do not use reconditioned T & PR
valves
NO