Installation and Owner’s Manual – Airoheat Heat Pump
15
H4120 025941 Rev. D
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 water discharges to waste
through the drain pipe.
3. Lower the easing lever gently and
check it closes correctly.
4. Repeat the above process for the
expansion control valve (if installed).
5. Check that the grill on top if the
water heater and the louvres are
free of debris or other obstructions.
Other than this, personally inspecting or
servicing any part of the water heater is
not recommended.
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.
This service should include the following:
• Replace the PTR Valve.
• Replace both anodes.
• Inspect and flush the expansion
control valve (if installed).
• Clean any debris or residue from the
condensate gutter and confirm that
the condensate drain line is clear.
• Clean any dust or build up from the
evaporator and louvres.
• Clean the fan blades and grill.
Drain and flush the water heater.
Replacement parts are available from
your local Dux supplier.
