Glow-worm Xtramax - Manual (Page 21)

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11a Horizontal Top Flue Installation
11a.4 Installation of flue assembly
Important: If the flue has been cut, ensure that there are no
burrs that could damage the ‘O’ ring.
• For flue systems less than 0,5 m long, leave the restrictor (a)
fitted in the fan outlet, see diagram 11a.5.
• Remove the backing from the self adhesive gasket (H) and
carefully fit gasket to base of elbow (C).
• Fit both ‘O’ rings (J) into the flue elbow (C), 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.
• Fit elbow onto boiler and secure with the four screws (I).
• Fit rubber sealing collar (F), see diagram 11a.3, into groove
at the outer end of pipe (A).
• Insert flue duct pipe (B) into inner end of air duct pipe (A), rotate
flue duct pipe to locate into groove inside air duct pipe.
• Fit air/flue duct pipe assembly into wall from outside with
rubber sealing collar to the outside.
• Fit internal plastic flange (G) onto air duct pipe (A).
• Fit the fixing collar seal (D) onto the air duct pipe (A) ensuring
it is the correct way round (the larger diameter onto the pipe).
• Pull air/flue duct pipe assembly inwards to bring rubber sealing
collar (F) hard up against external wall, while carefully pushing
the fixing collar seal onto the elbow ensuring that the flue duct
pipe locates into the flue elbow outlet while taking care not to
tear the ‘O’ ring.
• Fit the fixing collar (E) around the fixing collar seal (D) and
secure with 2 screws provided.
• Push the internal plastic flange (G) along the air duct pipe (A)
until engaged against internal wall.
Concentric flue system
The maximum permissible length (L) for
the concentric flue system is 3.5 m. For
flue systems up to 0,5 m length, the
restrictor (a) supplied fitted to the boiler,
inside the fan outlet, must be left in
place. For longer flue systems, the
restrictor must be removed.
For each 90° flue elbow used, (or two
45° elbows) the maximum permissible
length (L) must be reduced by 1 metre.
Pho 087
Diagram 11a.5
a
Gasket
11646
B
C
J
I
H
F
G
A
D
The flue kit 86285H is 810mm long and comprises:
- Air duct pipe .......................................................... A
- Flue duct pipe ........................................................ B
- Elbow ....................................................................... C
- Fixing collar seal .................................................... D
- Fixing collar .............................................................. E
- External rubber sealing collar ............................... F
- Internal flange ....................................................... G
- Gasket ..................................................................... H
- Screws ....................................................................... I
- 'O' rings ..................................................................... J
Diagram 11a.3
E
Diagram 11a.4
234
65
L
9530
WALL
THICKNESS