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rubber sealing gasket and clamp to the terminal. Centralise the
gasket and tighten the clamping ring. See Fig. 24. Slide the flue
centring ring, available from Worcester Heat Systems, onto the
air duct and tighten the screw. See Fig. 25. Fix the ducts and
terminal assembly to the flue outlet elbow as described in
Section 11.3 preceding.
Push the assembly through the wall so that the gasket flange is
against the outside face of the wall. See Fig. 25.
Align the flue elbow with the spigot on the appliance. Align the
clamp with the top of the spigot. Seal any small gaps in the
spigot beneath the clamp with a small quantity of sealant.
See Fig. 18.
Refit the fan. Do not use any sealant on the joint. Replace the
inner casing cover.
Seal the gap around the duct with the flexible seal provided and
make good. See Fig. 25.
Fig. 24. Terminal assembly for internal
fitting of the flue.
11.5 FINAL INSTALLATION
Check that all the water connections and the gas connection
have been tightened.
If
a facia mounted programmer is to be fitted, unscrew the
upper two screws holding the facia panel in place and carefully
lower the facia. See Fig 26.
Unplug the Operating Switch from terminal
X1 0
on the main
driver board. See Fig. 8. Unscrew the four screws holding the
switch plate and remove the complete Operating Switch assem-
bly. Fit the programmer and tighten the four screws. Plug the
programmer into terminal
X1 0
on the main driver board.
Lower the control box as described in Section 14.3(d).
Connect the mains electrical supply to the appliance and con-
nect any room and/ or frost thermostats. The electrical leads to
the room and frost thermostats must pass through the appropri·
ate holes in the control panel and be fixed with the cable clamps
provided. See Fig. 27.Refit the facia panel.
Test the gas supply pipework up to the appliance for soundness
as indicated in BS 6891.
Refer to Section 12 for a full description of the filling, venting
and, with a sealed system, the pressurising of the system.
If
the appliance is not to be commiSSioned immediately, replace
the cabinet front panel. Check that the gas supply, the electrical
supply and the water connections are all turned off.
If the premises are to hP. !P.ft
unn~~upiP.ri
during frosty condi·
tions, then commission the appliance as described in Section 12
and leave it under the control of the frost thermostat or leave
operating continuously with the room thermostat set at 6°C.
17
Fig. 25. Duct and terminal assembly for
internal fitting of the flue.
Duct assembly
Air duct
Fig. 26. Appliance casing and control
equipment fixings .
•
,.
Inner casing cover fixing screws (4)
•
•
p
c
Control box fixing screws (2)
Upper facia panel fixing screws (2)
l
I
•
--·
., .... C
m:e
0''0(1
~
.
,_;;..
.
-·
lll.I.Ma•w•n•-
~I
\ '
-
,.-..,""""-
-
Lower facia panel fixing sc1ews (2)
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