14
Henrad CC FF
- Installation
Flue Kit Requirements
Pack B1 - supplied as standard.
Extension Duct Kit - optional extra kit, to extend the flue.
10 DETERMINING THE FLUE LENGTH AND FLUE PACKS REQUIRED
INST
ALLA
TION
INSTALLATION
For side flue option
PROCEED TO FRAME 20
.
*
N.B.
If the measured flue length is only just above these sizes, it
may be necessary to shorten the standard flue before adding
extension duct(s), in order to prevent interference between
flue duct connections and the boiler flue elbow.
**
4000mm maximum for the 100 and 120 only.
Calculate the total length of flue by the following:
Rear flue length = Dim. W + 79mm (3
1/8
")
Rear flue length with stand-off channels = Dim. W + 109mm (4
3/8
")
RHS flue length = Dim. R + 220mm (8
5/8
")
LHS flue length = Dim. L + 96mm (3
3/4
")
Note.
These figures include the length of flue entering the flue turret socket.
USE A MAXIMUM OF 3 EXTENSION DUCTS
ONLY FOR THE 80 AND A MAXIMUM OF 4
EXTENSION DUCTS FOR THE 100 AND 120.
When using 90
o
elbow kits, each elbow is
equivalent to 1 metre flue length.
Total Length of Flue
Extra Packs Required
*
600mm (23
5/8
")
None
*
1600mm (63")
One Extn Duct
2600mm (102
3/8
")
Two Extn Duct
3000mm (118
1/8
")
Three Extn Duct
4000mm (157
1/2
")
Four Extn Duct