Owner’s Manual – Solar Water Heaters
24
H3165 029664 Rev. B
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 the anode. Ensure the new anode
is suitable for the water conditions. Please
refer to page 9 for further information.
• Inspect and flush the expansion control
valve (if installed).
• Drain and flush the water heater as
described on page 20.
• Flush the solar collectors as described on
page 21.
• Inspect the condition of any electrical
conduit and the water heater electrical
covers. Replace any damaged
components.
• Inspect the insulation on the solar flow
and return pipes. Repair or replace any
damaged insulation.
• Clean the solar collector surface.
Replacement parts are available from your
local Dux supplier.
Solar Collectors:
The efficiency of the solar collectors will be
reduced if the glass becomes dirty.
It is recommended that cleaning is carried
out early in the morning before the sun starts
to heat the collectors. The easiest way to
clean the glass is by washing it down with
water from a hose.
If a more thorough clean is required, safe
access will be required to the collectors.
This will usually require the use of a safety
harness by personnel trained in working
safely at heights. The collector glass can
then be cleaned with water, a soft cloth and
a domestic glass cleaner if required.
Do not attempt to replace broken collector
glass. It is not possible to replace the glass
in a flat plate collector. It may be possible
to replace the glass in an evacuated tube
collector. Please contact Dux After Sales and
Service for further information and advice.
System Maintenance
