Specifications

TM013 Vulcan Electric Service Instructions REV: D
D.O.I.: 05/09
This document is stored and maintained electronically by Service. All printed copies not bearing this statement in RED are deemed “uncontrolled”
18
Insufficient Hot Water
YES
Recommend a water heater of
sufficient capacity to meet
customers needs
NO
Recommend a hot water usage
pattern that will suit the water
heater and the customers needs
YES
NO
YES
Fit pressure limiting valve if not
already installed.
Existing pressure limiting valve
faulty – Replace
Faulty T&PR valve - Replace
YES
NO
Replace T&PR valve with one of
the correct pressure rating.
NOTE:Do not use reconditioned
T&PR valves
NO
NO
Check for crossed water
connection. Replace T&PR valve
YES
Repair any leaks
Isolate crossed connections
YES
NO
NO
YES YES
Replace the thermostatYES
Refit the element correctlyNO
Check inlet diffuser (if fitted) is not
restricted, missing or damaged
Check dip tube is not missing,
broken or incorrectly fitted
NO
Insufficient hot water diagnostic
Tempering value diagnostic
Has the usage pattern
changed recently? i.e.
additional appliances or
people using hot water
Is the heater of sufficient size
for the customers ongoing
needs?
Refer to Vulcan sizing guide.
Is the T&PR valve
continuously discharging
water?
Is the water supply pressure
more than 80% of the T&PR
valve rating?
Is the correct T&PR valve
fitted?
Are there any plumbing leaks,
crossed connections or
dripping taps?
Does the outlet water
temperature correspond with
the thermostat setting?
Is a tempering valve fitted?
Is the element orientation
correct?