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Dux 170ZB4P Instrukcja obsługi
Owner's Manual – Prodigy 4

Considering a Service Call?

It is recommended that the following
points be reviewed before making a
service call:
No Hot Water:
Confirm the pilot is alight. If it is not, see
Lighting the Water Heater on page 8.
High Gas Bills or Insufficient Hot
Water:
•
Consider that often the hot water
usage of showers, washing
machines and dishwashers can
be under estimated. Review these
appliances to determine if the daily
usage is greater than the capability
of the water heater.
•
If necessary check the shower flow
rates with a bucket, measuring
the amount of water used over a
period of time. If it is not possible
to adjust water usage patterns, an
inexpensive flow control valve can
easily be fitted to the shower outlet.
•
Is the water heater the correct size
for the requirements? Sizing details
are available from your Dux supplier.
•
Is there a leaking hot water pipe or
dripping hot water tap? A small leak
can waste a large quantity of hot
water. Replace faulty tap washers
and arrange for your plumber to
rectify any leaking pipe work.
14
•
Is the Pressure & Temperature Relief
Valve discharging too much water?
See below.
Continuous Trickle of Water from
Pressure & Temperature Relief (PTR)
Valve:
This is most likely due to a build up of
foreign matter. In this case, try gently
raising the easing lever on the PTR Valve
for a few seconds, then release gently.
This may dislodge a small particle of
foreign matter and rectify the fault.
Water Discharge from PTR Valve:
It is not unusual for a small quantity of
water to discharge during the heating of
water in the storage tank. The amount
of discharge will depend on hot water
usage and the size of the storage tank.
As a guide, it will discharge about 2% of
the volume of the water heated.
Continuous leakage of water from the
PTR Valve may indicate a problem with
the water heater. Shut down the water
heater and contact Dux After Sales and
Service.
If after checking the above points,
the problem has not been identified,
please contact Dux After Sales and
Service.
H3071
3071
Rev. K