Worcester WM 12 Installation And Servicing Instructions page 25

Fig. 24. Wall mounting bracket positions.
Wall mounting
bracket
Wall mounting
duct
(a) Standard 315mm Position
Fig. 25. Wall mounting duct / external duct assembly.
'D' Shaped
grommets
Gently pull here
(to take up the slack in the wall
mounting/external duct)
Main harness
WARNING: It is imperative the main
harness inside the wall mounting/external
duct is not sagging. This will prevent the
main harness being trapped behind the
insulation box.
Fig. 26. Baffle location.
Heat exchanger
Baffle retainer
External
duct
3
2
1
3
2
1
X
3
Baffle
25
Wall Mounting
Bracket
Wall mounting
duct
(b) Optional 285mm Position
(for fitting appliance within a 300mm unit)
Wall mounting
Wall mounting
4
1.
3
2. N
3.
4.
Fig. 27. Insulation box rope seals.
Middle rope seal
Outer rope seal
duct
duct seal
Two location holes each side to fasten the wall
mounting duct to the external duct.
o 6 locking screws
Completely seal the joint on all four sides
between the wall mounting duct and the
external duct with the sealant provided.
External control box
Inner rope seal