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• Ensure that the DuoValve is closed (on the mains water-in pipe)
• Turn on the main water supply.
• Check for water leaks along this mains ‘cold water in’ pipe.
• Turn on a hot water tap fed from the Solar tank (this assists with the removal of air from the system
during initial fill.
• Open the DuoValve on the Mains water-in pipe to allow water to enter the Solar tank.
•
Open the purge valve on the Solar Return Inlet connection to the tank (point G) (
very important to
prevent an air lock on initial fill
).
Warning – the water expelled from point G can be very hot and
precautions must be taken. This is best carried out when the Solar Collectors are cool.
• While filling the Solar Tank with water - hold open the 850kpa Pressure and Temperature valve
(Point J) – this also assists with the removal of air during initial fill.
• Also while filling the Solar Tank with water - watch for water to be expelled at the purge valve on the Solar
Return Inlet connection to the Tank point (point G) (water will have now partially filled the on-roof solar
collectors and pipes) –air will ‘hiss’ until water is expelled). When only water flows, close the purge valve.
• When water is expelled from the P and T Relief valve (Point J), let the valve close.
• Allow water to continue to enter the Solar Tank. Water will begin to come out of the hot water tap
previously left open. When there is a steady flow of water, turn off all hot taps. Check for any water leaks.
• Plug the solar pump into the ‘Pump’ socket on the underside of the Solar Control Unit.
• Plug the Solar Control Unit into a suitable electricity supply, and switch on the Solar Control Unit. The power
light should illuminate. Unplug the Collector Sensor cable (marked with a Red label) from the Solar Controller.
Plug the ‘Test Plug’ (supplied with the Solar Controller) into the Collector sensor input (marked with a Red label)
on the underside of the Solar controller and the pump should start. Open the purge valve and run the pump
for 10 minutes to ensure all the air is excluded from the solar collectors. Close the purge valve. Remove the
key to a safe place. Remove the ‘Test Plug’ to a safe place. Replug the collector sensor lead into the Controller.
• Ensure that Silicone seal is around the tank sensor cable, only at the entry point to the temperature receptacle
(for easy sensor removal if necessary).
• When the Solar Collector temperature sensor detects a temperature greater than 9 degrees above the tank
water temperature, or 1 degree centigrade, the solar pump will run and the ‘pump’ indicator will illuminate.
• Check for any leaks and take corrective action.
• Look forward to a very efficient and cost effective hot water delivery system, powered by the sun.
14. Priming and filling the system
•
Fit the Solar hot water outlet connector to the Solar Tank,
using thread tape
(Point H).
•
Connect the DuoValve (P/N DUO00A) and the water Pressure Limiting Valve (P/N PLV00A) together,
ensuring that the arrows on the valves are towards tank (point C),
using thread tape.
Run a length of
15mm pipe from the Pressure Limiting Valve to the tank. (Use the copper 15mm Tee to connect to
Tempering valve (Point T), Connect the Solar recycle (point P) on the tank to the solar pump inlet (Point D).
Run a length of 15mm pipe from the Duo Valve and connect back to the ‘mains cold water in’ connection
Point C).
•
Connect the Solar Collectors together using the connectors supplied.
Use thread tape on the solar
collector threaded connections
(Points M and or N).
Use two spanners to prevent twisting the manifold
.
•
Run a length of 15mm pipe and connect from the Shut-off ball valve (Solar Pump outlet connection – point E)
to the ½”M x ½” CTI Conetite union on the 15mm Brass Tee on the Solar Collector inlet connector.
Connect the 20mm – 15mm adapter to the collector and screw to the brass Tee fitting. Fit the Expansion
Control Valve.
Use thread tape on all threaded connections
(Points E to L). (
use two spanners
to prevent twisting the manifold when tightening the 20mm-15mm adapter to the collector
).
•
Run a length of 15mm pipe and connect from the Solar Collector outlet assembly – from the ½”M x ½” Conetite
CTI union to the W62 straight brass fitting on the Solar input on the Solar Hot Water, tank (Points K to G).
•
Electric Boost
- Connect the Brass Elbow fitting to the ‘Solar Hot water out’ (Point F) and then to the Tempering Valve.
•
Gas Boost
– Fit the W62 and nipple to the tank (Point F), run a 20mm pipe to the Water Inlet connection on the Gas
Booster, then connect from the Hot Water outlet on the Gas Booster with 15mm pipe to the Tempering Valve (Point R)
•
Fit the tank temperature sensor receptacle (P/N BSR00A) into point U.
•
Screw the 3/4”BSP Blanking Plug into (Point V) on the tank
•
Connect a cold water feed (from the Tee in the cold water-in pipe) to the Tempering Valve (Point T)
•
From the ‘outlet’ connection of the Tempering Valve (Point S) run a 15mm copper pipe to the Hot
water out (Point S to hot water taps)
•
Place the 2 sensor probes into their respective ‘blind’ receptacles – ‘cold water
in’- ‘Tank’ temperature (Point U) and the ‘Solar collector outlet’ – ‘Collector’ temperature (Point K).
• Silicone seal around the sensor cables, only at the entry point to the temperature receptacles.
Plug the other ends of the sensor cables into their respective marked positions on the underside of
the Solar Control Unit.
• Secure any loose cables with cable ties.
• For all Gas Boosted Heater system installations – Please see diagram in Section 4, and notes in Section 10
Gas connection must be carried by a qualified tradesperson – refer to the Gas Boost heater manufacturers instructions.
• Check all fittings and tighten as necessary.
13. Completing the Installation (cont)
