30
Installation instruction
for flat collectors on flat roof or foundation.
7. Final works
7.1 Installation control
Upon the completion of the installation work it is necessary to:
- check the installation correctness of all elements of the system.
- carry out a pressure test of the system,
- flush the system,
- fill the system with the solar fluid.
After the pressure test and flushing the system it is necessary to immediately fill the system
with the solar fluid. Otherwise, the tightness test and system flushing should be carried out
directly before filling up the system with the solar fluid.
7.2 Filling up the system
Filling up the system by using a filling station.
- Filling station hoses: (9): connect the pressure hose (1) with top drain valve (3), and
transfer hose (2) with bottom drain valve (4).
- Fill the filling station tank with the heating fluid, open the drain valve (3 and 4) and start
the pump.
- Close the ball valve (5) causing liquid flow through the solar collectors. During filling and
venting the system, you should open and close the ball valve (5) several times.
- Do not turn off the pump until the system will be completely vented -that is, until the air
bubbles cease to flow out of the transfer hose (2).
- Open the ball valve (5) and close the drain valve (4) continue to pump the heat medium to
the system until the system will reach the required overpressure p = 2,5 bar indicated by the
manometer (6).
- Turn on the controller plug (7) to the network~230V and turn on the circulation pump in
the manual mode.
- The remnants of air should be removed automatically by opening the manual valve (8).
- In case of decrease or lack of flow (the flow regulator float – has dropped) one should
unscrew the central screw in the circulation pump and release the air blocking the pump.
Perform this action till the complete system is vented.
- In case of a pressure drop on a manometer (6) below 1,5 bar fill up to the required
