Dux 170ZB4P Manuale d'uso - Pagina 15

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Dux 170ZB4P Manuale d'uso
Owner's Manual – Prodigy 4

System Maintenance

Regular servicing will help to keep
the water heater operating safely and
efficiently.
Six Month Service:
This service may be carried out by the
owner.
1. Stand clear of the Pressure &
Temperature Relief (PTR) Valve drain
pipe outlet.
2. Open the PTR Valve for
approximately 10 seconds by
lifting the easing lever on the valve.
Confirm that water discharges to
waste through the drain pipe.
3. Lower the easing lever gently and
check that it closes correctly.
4. Repeat the above process for the
expansion control valve (if installed).
Other than this, personally inspecting or
servicing any part of the water heater is
not recommended.
H3071
3071
Rev. K
Annual Service:
This service should only be carried
out by a licensed tradesperson. We
recommend your local Dux Service
Agent.
The service should include the following:
•
Inspect and flush PTR Valve and
expansion control valve (if installed).
•
Check the spark gap, gas control
valve and thermocouple.
•
Check and if necessary adjust the
main burner pressure.
•
Clean and check the main burner
and the pilot light.
Five Year Service:
This service should only be carried
out by a licensed tradesperson. We
recommend your local Dux Service
Agent.
In locations where the water has Total
Dissolved Solids (TDS) exceeding 600
mg/L, this service is recommended
every 3 years.
In addition to the items listed in the
Annual Service, this service should
include the following:
•
Replace the PTR Valve.
•
Replace the anode.
•
Drain and flush the water heater.
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