21
British Gas 40 - 80 RD2 -
Installation & Servicing
INSTALLATION
28 FLUE EXTENSION DUCTS - continued
FLUE KITS
Pack B:
supplied as standard.
Pack D:
optional extension kit for side flue, top or rear flue outlet. Refer to Frame 27.
1.
A maximum of 3 extension ducts (plus the standard flue duct) may be used together.
2.
Flue extensions of greater than 1m (39") should be supported with the bracket
provided.
27 FLUE EXTENSION DUCTS
Top outlet flue length
= A + B + Elbow allowance
90
o
Elbow = 1m
45
o
Elbow = 0.7m
29 FITTING THE KIT
1.
Remove the cardboard support aid from the flue and
place safely to one side.
2.
Fit the inner flue extension duct onto the inner flue duct.
3.
Fit the outer flue extension duct onto the outer air duct.
4.
Drill 3 - 3.2mm (
1/8
") dia. holes through the outer air duct.
Do not drill the inner flue
duct.
5.
Insert the self tapping screws provided to fix the air duct
in position.
6.
Repeat steps 1-5 if a second flue extension is required.
Flue length mm
Pack Requirement
Product No.
Up to 600
B, 1 off
150 308
600 to 1550
B, 1 off + D, 1 off
150 308+152132
1550 to 2500
B, 1 off + D, 2 off
150 308+
152132, 2 off
2500 to 3000
B, 1 off + D, 3 off
150 308+
152132, 3 off
INST
ALLA
TION
