SERVICING
30
Mexico Super CF495 - CF4140
-
Installation & Servicing
49 TTB DOWNDRAUGHT THERMOSTAT REPLACEMENT
Note
.
CF495
If minimum LH side clearance is used on the CF495
boilers, the TTB downdraught thermostat and bracket
should be moved to the RHS of the boiler (alternative
location).
MEX
2156
6
4
3
5
50 PCB BOX REPLACEMENT
1.
Refer to Frame 38.
2.
Remove the control panel. Refer to Frame 30.
3.
Remove the securing screws and lift off the
control box cover.
4.
Unplug the in-line connector to the TTB
thermostat .
5.
Reach down the side of the boiler and carefully
lift the TTB bracket from its retaining slot and
clip.
6.
Withdraw the thermostat, bracket and lead
down the side of the boiler.
7.
Locate and fit the new TTB downdraught
thermostat, bracket and lead and reassemble
in reverse order, ensuring that the in-line
connector is secured.
1.
Refer to Frame 38.
2.
Remove the 2 screws and lift off the
lower front panel. Refer to Frame 30.
3.
Undo the PCB cover fixing screw and
remove the cover.
4.
Remove the HT lead from the PCB
5.
Remove the 6 push-in connectors
from the PCB.
6.
Compress the barbs on the PCB
stand-offs to release the PCB from
the box
7.
Fit the new PCB and reassemble in
reverse order.
8.
Refit the boiler casing.
9.
Check the operation of the boiler.
SER
VICING
200944-1.p65
3/8/2004, 3:41 PM
30
