Glow-worm COMPACT 100p Instructions For Installation And Operation Manual page 39

14.25 Air Pressure Switch
Before starting refer to Section 11.
Disconnect the electrical connectors at the microswitch, see
diagram 14.19.
Disconnect the air pressure tubes.
Remove pressure switch see diagram 14.19.
14.26 Heat Exchanger
Before starting refer to Section 11.
Release the water pressure and drain the domestic hot water
and central heating, refer to Sections 11.3 and 11.6.
Remove the fan from the flue collector, refer to Section 14.1.
Remove the flue collector, secured with two screws, see diagram
14.2.
Remove the combustion chamber cover, see diagram 14.1.
Remove the main burner, refer to Section 14.2.
Remove the automatic air vent, see diagram 14.17.
If renewing the heat exchanger, transfer the air vent to the new
one, using the new sealing washers supplied.
Disconnect the union nuts of the heat exchanger to remove it.
Take care there may be some water retained in the heat
exchanger.
Discard the sealing washers and use the new ones supplied,
upon assembly.
Locate the raised location tabs on the combustion chamber
sides into the slots on the heat exchanger, when fitting.
Make sure that the main burner is located on the main injector
and is horizontal, the tips of the rear most blade under the two
burner guides.
The combustion chamber front panel should be fitted loosely,
then the flue collector also fitted loosely, ensuring that it is
seated correctly on the heat exchanger and over the top edge
of the front panel.
Locate the fan into the flue elbow and the clip at the rear, then
secure with the two screws.
14 Replacement of Parts
LOCATION
SLOT
CAP
AUTOMATIC
AIR VENT
SEALING
WASHER
UNION (4)
Diagram 14.17
UNION NUT
CONNECTOR
WATER FLOW
SENSOR
UNION NUT
UNION NUT
AIR
PRESSURE
TUBES
WHITE
SECURING
SCREW (2)
ELECTRICAL
CONNECTION (3)
39
Diagram 14.18
RED
AIR
PRESSURE
SWITCH
Diagram 14.19
221680G