Classic FF -
Propane Installation
33
SERVICING
70 PROGRAMMER REPLACEMENT (IF FITTED)
68 HEAT EXCHANGER REPLACEMENT
Note.
Refer to Frame 7 (Boiler Assembly - Exploded view) for
illustration of the procedure detailed below.
1.
Refer to Frame 56.
2.
Remove the burner /air box assembly. Refer to Frame 51.
3.
Drain the system.
4.
Disconnect the water connections. If compression fittings
are used then cut the pipes both above and below the
fittings, in order to allow the heat exchange assembly to be
removed. Remove the heat exchanger drain plug and
drain the residual water into a suitable receptacle.
5.
Remove the fan / collector hood assembly. Refer to Frame
52.
6.
Remove the combustion chamber by unscrewing the 4 tie
rods.
7.
Remove the thermostat sensors from the pockets on the
heat exchanger by removing the M3 screws and plates.
8.
Slacken 3 turns only the 4 heat exchanger / interpanel
retaining screws.
9.
Lift the heat exchanger / interpanel assembly upward and
forward to disengage key hole fixings. Pull the assembly
downward to clear the water pipes from the back panel.
10.
Remove the 2 rubber sealing grommets from the top of the
back panel to facilitate fitting the new assembly.
11.
Fit the new heat exchanger assembly, complete with water
pipes, and hang it on the key hole slots and screws.
Retighten the screws.
12.
Replace the 2 rubber sealing grommets.
13.
Reassembly in reverse order.
14.
Remake all water connections, ensuring that the
compression fittings (if used) are correctly refitted.
15.
Fully test all functions, including water and gas soundness.
1.
Refer to Frame 56.
2.
Remove the old seal from the bottom edge of the
casing and also from the edges of the boiler back
panel.
3.
Fit the new self adhesive seals.
4.
Replace the boiler casing.
69 CASING SEAL REPLACEMENT
1.
Refer to Frame 56.
2.
Remove the fixing screws and swing the
control box down into the servicing
position.
3.
Pull off the terminal connections from
back of programmer.
4.
Compress the lugs at each side of the
programmer and withdraw it from the
control panel.
5.
Fit the new programmer in reverse order.
6.
Set the programmer to the desired
programme and check the operation of
the boiler.
SER
VICING
