IDEAL imax W45 Installation And Servicing Manual page 15

16 OPEN FLUE KITS
Flue System
Open flue kit 80/125 suitable 158662 +
for W45 & W60
Open flue kit 100/150
suitable for W80
Contents
158662 / 158663
• Boiler adapter + screws (x6)
• Air inlet grille
158769 / 158770
• Terminal
Note: See Frame 19 for elbow equivalent lengths.
17 TWIN PIPE FLUES
Twin pipe flue systems can be created using these kits. The air is drawn in from a
horizontal wall terminal and the flue exhausted through either a vertical roof or
horizontal wall terminal.
The maximum flue extension depends on the ratio of air to flue tube. By fixing
either the air or flue tube length, you can determine how much of the other can be
fitted using the appropriate line from the graph below. An example is marked on
the graph. The example assumes the air tube extension has been fixed at 4m.
From the graph we can determine that the allowable flue tube extension length
would be 17.3m for W45 and 10.6m for W60.
20
10
0
0
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Installation & Servicing
INSTALLATION
Part No. Max Flue Ext.
W45 W60
m 20 13.3
158769 Pa 60 80
158663 + m 29
158770 Pa 100
W45 and W60
10 20
Air Tube Length (m)
Kit
158769
Kit
158773
Kit 158778
Wall plug - 8 off
Screw - 8 off
30
Kit 158777
or
Wall plug - 8 off
Screw - 8 off
Kit 158771
(pair)
Kit
158773
Kit
158686
RF 2545
15