W W W . S O L A R P O W E R . N E T . A U
Page 4 of 20
Revision: 9h Issued: 01 August 2008
Revision: 9h Issued: 01 August 2008
has been done you can then lift the 2
nd
panel and using the barrell
unions fix it to the rails. To finish screw the final side brackets into
place. The panels are now secure.
10)
Follow instructions 2-8 for the other rails. A total of two rails are
required for non cyclone areas, and a total of 3 rails are required
for cyclone rated areas.
11)
Connect them as shown in the diagram, remembering to use Teflon
tape or approved liquid sealant on all plumbing joints. Always use
two spanners to tighten panel fittings, and do not exert any torque
on the panels.
NOTE: WATER FLOW THROUGH PANELS - the water inlet
from the pump must be connected to the lower header pipe of
the array. Ensure that the water exits the panels from the top
header pipe, diagonally opposite from the inlet and returns to
the “Solar Return” on the tank. The pipe work to the panels
must also allow full drainage of the panels. THE INLET PIPE
TO THE PANELS MUST BE RUN DOWN THE ROOF TO
ALLOW FULL DRAINAGE OF THE PANELS, AND TO
ALLOW FOR PRIMARY FROST PROTECTION.
12)
Install the air bleed valve onto the outlet of the panels at the top
left corner of the panels.
NOTE: The air bleed valve needs to be commissioned and checked
to ensure the valve top is opened and that when the pump
operates the valve seals properly. This can be done by listening
to the valve to ensure air is not entering the pipe work. Let the
pump run for 3-5 minutes if air is still bubbling into the tank at
this stage the valve is not sealing. Place the “Flow Control
Disc” into the return line tank connection to prevent a venturi
effect at the air valve. (This restrictor should be a 3-4 mm hole
size)
13)
Mount the panel temperature sensor to the Air bleed T piece.
14)
Drill a 10mm hole in the roof near the sensor and run the sensor
leads through the hole drilled in the roof, once this is done seal the
hole with silicon.
15)
Use the terminal block to connect the ends of the sensor leads to
the supplied cable, and run this wire down to the solar controller
unit on the storage tank.
NOTE: Do not use the same hole as the pipe work as movement of
the pipes will case the cable to break or short circuit.
16)
Install the Solar Hot Pipe and Solar Cold Pipe to run between the
storage tank and the collectors. Both pipes should be DN15 (1/2”)
copper pipe, with 13mm or thicker synthetic rubber insulation
(Armaflex, Bradflex). All insulation should be protected from UV
degradation by two thick coats of paint, or by covering with
ductwork. Pre-lagged pipe (often green PVC or plastic insulation)
is not suitable for thermal insulation purposes – only use foamed
synthetic rubber insulation.
