Glow-worm swift flow 80 Installation Instructions Manual page 15

7.4 Air Duct
Locate the flue duct and air duct in the flue elbow,
making sure that the flue duct is located in the flue
terminal and the flue elbow but is free to move to allow
for expansion.
Check that the flue terminal is in the correct position and
sticking out the correct distance from the outside wall
face, see diagram 7.1 and appropriate diagram 7.2 or 7.3.
Drill a hole, diameter as shown in diagram 7.4, in each
side of the air duct, through the holes in the flue elbow.
Secure the air duct to the flue elbow using the two
screws supplied in the loose items pack.
Seal around the joint between the air duct and the flue
elbow using the tape provided in the loose items pack.
If the boiler is not to be fitted for some time, cover the
hole in the wall.
7.5 Internal Access Flue
If access to the outside wall surface is not practical, the
flue system can be installed from inside using the
internal access wall sleeve and seal. A core drilled hole,
diameter as shown in diagram 7.5 is required for the
sleeve.
Place the wall sleeve into the hole, flush with the outside
wall face and seal around the sleeve to make it
weatherproof on the outside and internally "good".
Access to the outside is possible through the sleeve.
If the sleeve is too long, cut it to the same length as the
wall thickness.
Stick the self-adhesive seal, supplied in the loose items
pack, around the air duct, in a position so that it will be
flush with the outside wall when installed.
7 F l u e P r e p a r a t i o n
FLUE
TERMINAL
FLUE AIR DUCT
115 DIA.
CORE
DRILLED
HOLE
INTERNAL ACCESS
15
FLUE DUCT
TAPE
AIR DUCT
SCREW (2)
OUTSIDE
WALL FACE
AIR
DUCT
FLUE
TERMINAL
SEAL
3.3 DIA
HOLE IN EACH SIDE
OF THE AIR DUCT
FLUE
ELBOW
Diagram 7.4
WALL
SLEEVE
Diagram 7.5
221132B