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Solar Pool Heating System -- Installation & User Manual
© Copyright 2020 Optex Solar Pty Ltd. All rights strictly reserved.
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Collector Panel Plumbing Connections
BEFORE CUTTING - put aside two collectors per row with undamaged
end caps.
For all remaining collectors cut the single end cap off using a
sharp blade or hacksaw.
Check all collector pipe connections for raised edges or grooves on the
weld lines which could channel water and cause leaks. Clean these up
using a blade and/or a heat gun on a high setting.
Check all barb edges are smooth and spherical to seal properly. For any
high or low points,
warm the barb edge with a heat gun on high at 450°C
for 3-4 seconds
, then slide over a 32 PVC (DN30) socket or 20 PVC (DN20)
socket for the smaller interconnect barb
–
this will knock down any high
points.
When installing silicon joiners the hose clamp band should be at the end
of the silicon joiner and not on the connector barbs.
HAND TIGHTEN ONLY
using
with an 8mm hex socket.
Do not glue in silicon joiners
. (Pinhole
leaks can be sealed with a little silicon). You may need to slightly re-
tighten these with cool water running through the collectors at a later
stage, as HDPE has a high thermal contraction.
The
barb end
of inlet/outlet PVC adapter should be glued into the 40mm
silicon joiner with any neutral cure silicon as shown.
Why?
PVC barbs can soften at extreme roof stagnation temperatures and
contract slightly with clamp pressure. HDPE, on the other hand, will not
soften significantly at the maximum roof stagnation temperature of
~80˚C.
The
non-barb end
of inlet/outlet PVC adapter should be glued into
32 PVC
(DN30) sockets
.
Note: some 32 PVC (DN30) socket brands are non-standard and are quite
loose with our adapters, if so
apply a layer of PVC glue and let dry for 1
hour prior to final socket gluing or use a filler PVC glue.
Laceration hazard: Always cut away from your
body and ensure no parts of the body are in front
of the cutting blade.
Any misshapen barbs can be warmed to 150°C
with a heat gun to reform.
