Operating instructions

15
FLUE INSTALLATION
Extended flue
The horizontal flue is extended by using one or more
of the 1000 mm extension pipes part number 85452.
These are connected together by push fit type joints.
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
14. Cut both the inner and outer pipe to the dimen-
sion given in table 3.
Important : All cutting lengths should be measured
from the push fit joint end of the extension pipe. Do
not leave any burrs or sharp edges on the cut end
of the pipes.
Installation of flue assembly (see diagram 16)
● Fit rubber sealing collar (A) into groove at the outer
end of pipe (B).
● For internal access only installation, that is with 125
mm diameter hole, fit rubber spacer (D) to outer
flue to support flue in wall.
● Fit outer pipe (B) into wall with line marked on flue
uppermost and groove to the outside.
● Pull pipe inwards to bring rubber sealing collar hard
up against external wall.
● For both internal and external access installation,
fit the rubber sealing flange (C) against the inside
wall.
● From inside, insert inner pipe (E) into outer pipe,
ensuring that groove on terminal end of pipe en-
gages into tongue on outer pipe end cap.
● Engage boiler upper part onto hanging bracket,
● Allow boiler to seat down onto support plate,
● Fit filters and washers, strictly adhering to the
sequential order and directions shown on diagram
6 or 7. Connect the various couplings between boiler
and connection plate.
● From inside boiler, remove wire clip on flue adap-
ter pipe. Push adapter pipe down into flue outlet
pipe, see diagram 17.
● Fit rubber air inlet dome (F) to elbow, engaging it
on the outer part.
● Fit elbow ( G) onto inner and outer flue ensuring
inner flue is correctly engaged into elbow.
Note : To allow easier engagement of elbow onto
flue, use a small quantity of silicone grease.
● Secure rubber air inlet dome (F) to top of boiler
with plate and screws.
● Push flue adapter pipe up and engage it onto
inner part of elbow. Refit wire clip
Flue option Cutting length (mm) Comments
outer pipe inner pipe
Side flue left e + a - 493 e + a - 483 maximum
dimension "X" without
extension 755 mm
Side flue right e + a - 427 e + a - 417 maximum
dimension "X" without
extension 755 mm
Table 3
Ins 047
Diagram. 17
AE B D C F G
Diagram. 16
Ven 094b