17
xtra
-
Installation & Servicing
INSTALLATION
12 AIR DUCT CONT'D....
Where ducting the air from outside is not practical it can be
drawn from the boiler room by assembling the air inlet
pipework as follows into the configuration shown in fig 1 & 2.
1.
Fit the 93º elbow into the boiler air inlet pipe.
2.
Fit the 112.5º bend into the 93º elbow.
3.
Fit the 110 dia. tube into the 112.5º bend.
4.
Fit the air inlet grille to 110 dia. tube and fix with the 3 off self
tapping screws provided.
5.
Using the existing screws holding the upper or centre back
panel to the boiler, fit the support bracket assembly and re-
tighten the screws.
6.
With the air inlet pipe assembly in position, retain it with the
pipe clamp, fixed with the 2 off M5 screws provided.
With this kit fitted the maximum straight flue length available
and maximum pressure available at the base of the flue to
overcome flue resistance will change, refer to the appropriate
table on page 5.
fig 1
5
4
6
3
2
1
fig 2
5
4
6
3
2
1
INST
ALLA
TION