11
INSTALLER
b
All shut-off cocks and drain cocks must be easily
accessible. Make sure that the end user fully under-
stands how they function.
Shut-off and drain cocks
15 PREPARING FOR INITIAL STARTUP
Proceed as follows to fill the primary and secondary cir-
cuits.
- Fill the DHW tank.
- Flush out the solar collector circuit.
- Fill the solar collector circuit.
b
Fill the DHW tank before filling the solar collector
circuit.
b
Only fill the solar collector circuit when the collec-
tors are cold.
FILLING THE DHW TANK
- Open and leave open the cock (5) for the domestic
cold water inlet (CWI).
- Open a hot water tap and fill the storage cylinder
with cold water from the mains supply. When water
starts coming out of the hot water tap, leave it run
until you obtain an even flow then close the tap. The
DHW tank is now full.
FLUSHING THE SOLAR COLLECTOR CIRCUIT
Carefully check all connections and unions for leaks be-
fore filling the system with the water and glycol mix. Use
the following procedure to test for water tightness. The
same procedure can also be used to flush out the circuit
to remove any residues.
- Connect the hose union on the filling/drain cock (1)
to a cold water tap using a length of hose pipe.
- Connect the union (2) on the storage cylinder to a
drain.
- Open the cock (1) and the cold water tap and leave
water flow into the solar collector circuit for a few
minutes.
- Close the cold water tap and the cock (1).
- Check all connections and unions for leaks.
EAF
Sc
UAC
5
2
1
