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10 DETERMINING THE FLUE LENGTH AND FLUE PACKS REQUIRED
Dimension X - Wall thickness
Dimension Y - Wall thickness plus
boiler spacing
(RHS)
Dimension Z - Wall thickness plus
boiler spacing
(LHS)
IMPORTANT.
The boiler MUST be installed in a vertical position.
Flue pack requirements
Flue length dimension
Rear flue
Right hand side
dimn. X
114 - 580 mm
(4
- 22
")
1/2"
3/4
580 - 1530 mm
(22
" - 60
")
3/4
1/4
1530 - 2480 mm
1360 - 2310 mm
(60
" - 97
")
(53
1/4
3/4
2480 - 3000 mm
2310 - 3000 mm
(97
" - 118")
3/4
For REAR outlet flue
For SIDE
14
INSTALLATION
Left hand side
flue dimn. Y
flue dimn. Z
114 - 410 mm
114 - 540 mm
(4
- 16" )
(4
1/2"
1/2"
410 - 1360 mm
540 - 1490 mm
(16" - 53
")
(21
1/2
1490 - 2440 mm
" - 90
)
(58
1/2
3/4"
2440 - 3000 mm
(90
" - 118")
( 96" - 118")
3/4
outlet flue
Calculate the total length of flue by the following:
Rear flue length = Dim. X + 40mm (1
RHS flue length = Dim. Y + 188mm (7
LHS flue length = Dim. Z + 61mm (2
Note.
These figures include the length of flue entering the flue turret
socket.
Note. The flue duct MUST be inclined at 2.5
horizontal to allow condensate to drain back into the
boiler and out through the condensate drain.
Flue
packs
required
Pack B2 - 1 off
- 21
" )
1/4
Pack B2 - 1 off &
" - 58
")
Extn Duct - 1 off
1/4
1/2
Pack B2 - 1 off &
" - 96")
Extn Duct - 2 off
1/2
Pack B2 - 1 off &
Extn Duct - 3 off
Go to Frame 11
Go to Frame 21
")
5/8
")
3/8
)
3/8"
to the
0
FLUE KITS
Pack B2
supplied as standard .
Extn Ducts (1m)
optional extension kit
for side flue or rear flue
outlet 1000 mm long.
Refer to 'Flue Extension
Ducts'
Vertical Flue
see optional extras.
Henrad SEC FF -
Installation
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