44
SERVICING
icos system -
Installation and Servicing
1.
Refer to Frame 50.
2.
Loosen the screw on the underside of
the user control.
3.
Pull the display unit forward to remove.
4.
Push the new display unit into position.
5.
Reassemble in reverse order.
6.
Check operation of the boiler. Refer to
Frame 50.
64 USER CONTROL REPLACEMENT
65 PRESSURE GAUGE REPLACEMENT
1.
Refer to Frame 50.
2.
Drain the boiler. Refer to Frame 68.
3.
Unscrew the pressure gauge and discard.
4.
Fit the new pressure gauge, using a suitable jointing
compound.
5.
Refill the boiler. Refer to Frame 30.
6.
Check operation of the boiler. Refer to Frame 50.
2041
Pressure gauge
Flow isolation valve
(shown in the open position)
E
c
l
2
3
82
2
D
i
sp
l
ay
un
i
t
Note.
Only the display unit is replaced.
SER
VICING
200214-11.pmd
17/11/2006, 09:36
44