41
221873B
Diagram 14.28
7005
SECURING
SCREW (4)
PLUG
14 Replacement of Parts
CLOCK /
TIMER
L
N
ELECTRICAL
CONNECTION (4)
14.30 Air Pressure Switch
Before starting refer to Section 11.
Disconnect the two electrical connectors at the air pressure
switch, see diagram 14.27.
Remove the flexible tubes from the switch.
Remove the air pressure switch, secured with two screws.
When replacing the tubes to the air pressure switch make sure
that the red tube from the fan connects to the upper connection
of the switch.
The polarity of the electrical connections is important, refer to
diagram 14.29.
14.31 Electro-Mechanical Clock/Timer
Before starting refer to Section 1 General Data.
Isolate the boiler from the electrical supply.
Remove outer case front as section 11.4.
Remove the two screws securing the controls cover door and
controls facia, see diagram 9.1.
Hinge the assembly forward.
Remove the clock timer cover, see diagram 10.2.
Disconnect the clock timer wiring harness plug, remove the
clock/timer and electrical connections, see diagram 14.28.
