PLANNING THE AIR/FLUE DUCT LAYOUT
10
Fig. 1.12: Flue restrictor rings
Flue restrictor rings
The flue restrictor ring marked F0 and
F1 is packed with the boiler
connection accessories. The restrictor
ring should be fitted as shown in the
diagram according to the equivalent
flue length in the table.
The total equivalent flue length is the
total length of the flue (including the
terminal assembly for vertical flues),
plus the resistance of any bends or
elbows used.
-
equivalent length of 90° elbow is
1 m
-
equivalent length of 45° elbow is
0.5 m
• Push the restrictor (
1
) into the flue
connection of the appliance (
3
)
• Connect the flue/elbow (
2
) into
the flue connection of the
appliance (
3
).
aquaPLUS
thermoCOMPACT
637 E
turboMAX plus
837 E
Use restrictor F0
---
Use restrictor F2
---
No flue restrictor
---
< 2.5 m
---
> 3.3 m
< 2.5 m
---
> 3.3 m
< 2.5 m
---
> 3.3 m
Use restrictor F1
---
2.5 - 3.3 m
2.5 - 3.3 m
2.5 - 3.3 m
Total equivalent flue length
(incl. terminal any bends / elbows used)
