IDEAL LOGIC + Combi 24 Installation And Servicing page 21

18 FLUE ExTENsION DUCTs - continued
Use a maximum of 9m extended flue ONLY (24)
Use a maximum of 8m extended flue ONLY (30)
Use a maximum of 6m extended flue ONLY (35)
general arrangement
1. A maximum number of extension ducts
are possible for each boiler output with one
suitably cut.
- 9 extension ducts for 24
- 8 extension ducts for 30
- 6 extension ducts for 35
Refer to Frame 11 for lengths
2. Flue extensions of greater length than
1m should be supported with the bracket
provided, suitably adjusted. Refer to
Frames 17 and 26.
3. Only use water as a lubricant during
assembly. Do not use mineral based oils.
19 FITTINg ThE KIT
If the telescopic flue terminal is used it is not always necessary
to cut an extension pack.
1. Measure the total flue length 'L' from the centre of the boiler
outlet to the outside wall.
2. Subtract 65mm from this dimension.
3. Subtract 950mm for each 'D' pack to be used.
4. If the remainder Y is 300mm - 500mm this can be taken up
by the adjustment in the telescopic flue.
+
Ideal Logic Combi -
INsTALLATION
65
3G9616
Installation and Servicing
Extension flue
Boiler
nm8762
5. If the remainder Y is 500mm - 950mm it will be necessary
to use a further 'D' pack cut to 400mm.
6. If the remainder Y is less than 300mm, shorten the
previous 'D' pack to suit required length and adjust the
telescopic terminal.
7. Measure and mark the length on the flue, to ensure a
square cut mark the flue all the way around and cut to
length.
L
950
Flue length
Note. Side flue shown
Standard flue
Terminal grille
Y
500
300
21