Installation & Servicing instructions ATAG iC-Range
36
11 Filling system
Information of the actual water pressure:
The controller Home screen shows OK. The actual water pressure is
always visible.
Water pressure is too low (<0.8 bar):
Power is reduced by 20%. The installation should be refilled.
Water pressure is too low (<0.5 bar):
The boiler is taken out of operation. The installation should be refilled.
Air purge program:
After the installation has been refilled and if the pressure was below 0.5 bar
the air purge program will start. This will last for approximately 7 minutes.
Water pressure is too high (> 3.0 bar):
The boiler is taken out of operation.
The installation pressure should be reduced by draining water from the
heating system.
The central heating installation needs to be filled with potable water according to the requirements in chapter
9.3 'Water quality'. For filling or topping up the installation use the filling loop according to the following
procedure (see figure 11.
1
Attach the filling loop pipe to the filling loop assembly (between position 1 and 2);
2
Open the small filling loop valves A and B;
3
Slowly fill the central heating system up to 1.0 – 1.2 bar;
(at the bottom left a pressure gauge indicates the water pressure in the central heating system)
4
Close the filling loop valves A and B;
5 Vent the entire heating installation starting at the lowest point;
6 Check the water pressure and top up if necessary to 1.0 – 1.2 bar;
7
Check the filling loop valve is closed;
OPEN
CLOSED
1
2
A
B
3
Figure 11.a
