
Supplied By www.heating spares.co Tel. 0161 620 6677
46
221473B
4 Replacement of Parts
Diagram 4.27
6507
KEY
br
BROWN
b
BLUE
y
YELLOW
Diagram 4.28
SECURING CLIP (2)
SPACER
PLATE
MOUNTING
BRACKET
TIMER/CLOCK
6515
DIGITAL CLOCK/TIMER
ELECTRO/MECHANICAL and
DIGITAL CLOCK/TIMER
CLOCK/
TIMER
SECURING
SCREWS (2)
ELECTRICAL
CONNECTIONS
MAINS
NEUTRAL (N)
MAINS
LIVE (L)
HEATING ON
COMMON
y y
br b
4.29 Viewing Window
Remove the viewing window, secured with two screws. When
fitting a new window use the gasket provided, see diagram 1.3.
4.30 Casing Seal
Remove the old seal, clean out the old adhesive.
Glue the new seal into place, making sure that there are no
breaks in it.
4.31 Air Pressure Switch
Disconnect the two electrical connectors at the air pressure
switch, see diagram 4.26.
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 lower (red ) tube from the fan connects to the lower
connection of the switch.
THE POLARITY OF THE ELECTRICAL CONNECTIONS IS
IMPORTANT, see diagram 4.12.
4.32 Clock/Timer - if fitted
ELECTRO/MECHANICAL and DIGITAL clock/timer - Release
the mounting bracket securing screws, see diagram 4.27
Disconnect electrical cables, release securing clip to remove
the clock/timer spacer, see diagram 4.28.