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12. Instructions for assembling and fitting the Solar collectors
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Your solar collectors will arrive with the evacuated glass tubes installed. These evacuated glass tubes must be
handled very carefully – Please note that these glass tubes never come into contact with the solar hot water, so if
they ever got broken during the operational life of the solar hot water system, no solar hot water will ever get lost.
They are easy to replace in-situ and do not require the system to be drained. This is because the Suntrap Solar
Hot water system uses U-Tube solar collector technology which fully contains all the solar water within high
pressure copper pipes which run inside the evacuated glass tubes.
As can be seen from the following pictures, the evacuated glass tubes slide into the
collector manifold and are retained by plastic shrouds at the opposite end.
16 U-tubes make up each Solar collector
2 x Solar collectors are shown below
Part/n SET232
3 x Solar collectors are shown below
Part/n SET348
Pre-check list before starting to commission system:
Do not attempt Solar collector installation on a hot day – the Solar collectors and fittings
will be too hot to touch
•
Turn off mains water supply valve
•
Make sure all connections are tightened
•
Make sure all fittings are securely tightened
•
Ensure Air vent valve has been opened at least 1 turn (and leave open)
•
Understand the importance of correctly purging the system – use of the purge valve at
point G (and the Test plug in the Solar Controller Unit) – if air is left in the system, this
valve will not open and recirculation will not take place: the Solar collectors and pipe
work will pressurise, the pump will be put under strain and damage could result.
WARNING – the water expelled from point G can be extremely hot and
precautions must be taken.
•
Ensure that the temperature sensors are correctly placed and secure – again, if these
are not sensing the correct temperatures, the Solar controller will not operate correctly,
which could result in the PTR valve on the tank operating prematurely, and wasting
water. (incorrect temperature detected and solar tank water gets too warm)
•
Turn on mains water supply valve. Turn on the cold water in DuoValve
•
Turn on Ball Valve at point D (handle in-line with pipe)
•
Check diagram below – connections and components to be installed in the order shown
•
OK to start commissioning system
Cold water in
DuoValve (on/off and one way)
500kpa Pressure Limiting Valve
Tank cold water in
(point H)
Mains water supply valve
11. Check List immediately prior to commissioning System
