11
FLUE INSTALLATION
Flue option
Cutting length (mm)
Comments
outer pipe
inner pipe
Side flue left e + a - 1479 e + a - 1479
maximum
dimension "X" without
extension 739 mm
Side flue right e + a - 1479 e + a - 1479
maximum
dimension "X" without
extension 739 mm
Table 3
R
T
S
N
Q
O
P
U
V
Pho 088
Diagram 12
Pho 087
165
182
80
L
Restrictor a
Spacer b
Hab 243
Extended flue
The horizontal flue is extended by using one or more
of the 1000 mm extension pipes,
Saunier Duval
part
number 85091. These are connected together by
push fit type joints, clamps and seals.
Calculation of flue cutting lengths for extended flue
• Using the correct number of extension kits as
ta-
ble 2
, measure dimensions
a
and
e
,
see diagram
9
. Cut both the inner and outer pipe to the dimen-
sions given in
table 3.
Important:
All cutting lengths should be measured
from the push fit end of the extension pipe. Do not
leave any burrs or sharp edges on the cut ends of
the pipes.
Installation of flue assembly
• Fit rubber sealing collar (
P
) into groove at the
outer end of pipe (
N
),
see diagram 11.
• Fit outer pipe (
N
) into wall with groove to the
outside.
• Pull pipe inwards to bring rubber sealing collar
hard up against external wall,
see diagram12.
• Fit internal plastic flange (
Q
) onto outer pipe.
Push along the pipe until engaged against inter-
nal wall.
• From inside, insert inner pipe (
O
) into outer pipe.
• Fit both 'O' rings
(T)
into the flue elbow
(V)
, one
at the inlet, one at the outlet. By necessity, they
are a loose fit, apply a small amount of silicone
grease to each 'O' ring when fitting.
• Slacken the two screws and fit the clamp and
seal
(R)
onto the elbow.
• Take hold of the inner flue and push gently onto
the elbow outlet taking care not to tear the 'O' ring.
Important
: If the flue has been cut, ensure that there
are no burrs that could damage the 'O' ring.
• Push the elbow clamp and seal over the outer
flue.
• For flue systems less than 1 m long, leave the cup
restrictor
(a)
fitted in the boiler flue outlet,
see dia-
gram 13.
Diagram 11
• Remove the backing from the self adhesive gas-
ket
(S)
and carefully fit gasket to base of flue el-
bow.
• Fit spacer
(b)
onto underside of elbow, fit elbow
onto boiler and secure with the four screws
(U)
.
Diagram 13
