21
912.822.1 - GB
InstructIons pertaInInG to the InstaLLer
Connect the boiler to the flue using a pipe made of stainless steel or plastic material with an internal diameter
of 80 mm, capable of resisting normal mechanical stresses over time, as well as high temperatures
(<120°C)
and the chemical effects of fuel gases and their condensates.
Insert the flue-gas union and fasten the connector to the flue-gas thermostat before hooking up to the
flue.
Whenever possible use a flue connection that can be disconnected for maintenance.
Important! horizontal flue sections must have a minimum slope of 3° towards the boiler.
Flue accessories
made of plastic material
for cascade or single installations are available.
11. chiMney Flue connection
CT_0810 / 0902_2703
Figure 7a
0712_0905 / CT_0752
Max. length of flue duct (model HTE 45) :
30 m
(L)
Max. length of flue duct (model HTE 65) :
20 m
(L)
Each 90° bend reduces the duct max. length by :
1 m
Each 45° bend reduces the duct max. length by :
0.5 m
taBLe FuMes pressure avaILaBLe
Cascade solution
∆P available
flue duct B23 Ø 80
∆P available with
single non-return valve Ø 110/110
FS 50
150
110
FS 70
150
100
