Chimney Flue Connection - Potterton Sirius FS 50 Installation, Operation & Maintenance Manual

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
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
Figure 7a
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
FS 50
FS 70
InstructIons pertaInInG to the InstaLLer

11. chiMney Flue connection

for cascade or single installations are available.
taBLe FuMes pressure avaILaBLe
∆P available
flue duct B23 Ø 80
150
150
Cascade solution
∆P available with
single non-return valve Ø 110/110
110
100
21
(<120°C)
912.822.1 - GB