A.O. Smith SGS - 100, Installation, User And Service Manual

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Instruction manual SGS 57
gis
Warning
To avoid contaminating the glycol, you should flush the solar heating system
through with water before filling.
5.3.1 Flushing with water
1. Connect a water supply to the filling point of the pump station.
2. Connect a drain hose to the drain point.
3. Open the taps of both supply and drain point.
4. Open the water supply tap.
5. Allow the system to spool through until no further contamination comes out
of the drain hose.
6. Then shut off the water supply.
7. Drain all remaining water from the system.
8. Now you can fill the system with glycol.
5.3.2 Filling met glycol
1. Insert the hose of the glycol pump into the jerry can containing the glycol.
2. Connect the pump to the jerry can.
3. Connect the hose of the glycol pump to the inlet combination of the pump
station.
4. Open the valve of the inlet combination.
5. Plug the glycol pump into a mains socket.
6. Start the glycol pump using the ON/OFF switch on the glycol pump.
7. Stop the glycol pump as soon as the pressure gauge on the pump station
begins to rise.
8. Completely bleed the system of air at the air bleed point (26, see installation
diagram).
9. Close the air bleed when no further air comes out.
10. User the service menu (12.9.2 "Switching on the solar pump") to switch the
pump on.
Note
To ensure that the solar heating system is properly filled, the pump in the
solar heating system can be switched on for 2 minutes using the service menu.
11. Repeat steps 6 through 9 until glycol runs out of the air bleed (26).
Note
If an installation does not have a drain-back system, then it should be filled
up to pressure (1.5 bar).
If an installation does have a drain-back system, then it should not be
pressurised. For the installation, filling and drainage of a drain-back system,
please refer to the installation manual and users manual of the solar collectors.
12. Switch off the glycol pump.