Keston Combi C30 - Flue System

18
FLUE OUTLET
18
Installation and Servicing
SECTION 2 - INSTALLATION
continued............
2.3 FLUE SYSTEM
IMPORTANT
When installing a replacement boiler a new ue system is recommended. However re-using the existing
boiler ue installation is acceptable if the installer checks and conrms:
• The ue pipe is the approved Marley/Polypipe/Terrain 50mm muPVC solvent weld ue system
• The ue installation is upgraded to the most recent ue standards taking particular care to comply with
ues in voids
• A risk assessment is conducted to conrm the effectiveness of the ue
• The existing ue will last the lifetime of the new appliance
DESIGN
Individual air supply and ue outlet pipes are used as standard.
The material approved for this application which MUST be used are:
- Marley muPVC Solvent Weld System (50mm)
- Polypipe System 2000 muPVC solvent weld (50mm)
- Polypipe Terrain 200 muPVC Solvent Weld System (50mm)
to BS5255 and/or BSEN1566-11 and BSEN1329, are the only systems approved for this application.
The following pipe and ttings are approved.
Polypipe System 2000 muPVC solvent Weld System (50mm)
Polypipe Code
MU 301 4m length muPVC wastepipe 5/225
MU 313 50mm x 45 deg muPVC obtuse bend
MU 314 50mm x 92.5 deg muPVC swept bend
MU 310 50mm muPVC straight coupling
MU 316 50mm x 92.5 deg muPVC swept tee
Marley muPVC Solvent Weld System (50mm)
Marley Code
KP 304 50mm x 4m double spigot pipe
KP32 50mm x 45 deg bend
KSC3 50mm straight coupling
KB3 50mm x 88.5 deg bend
KT3 50mm swept tee
Polypipe Terraine Solvent Weld System (50mm)
Polypipe Code
200.2.40 4m length muPVC wastepipe
201.2.135 50mm x 135 deg muPVC bend
200.2.91 50mm x 91
1
/4 deg muPVC swept bend
210.2 50mm muPVC straight coupling
204.2.135 50mm muPVC swept tee
Consideration MUST be given to expansion and contraction of the ue. Refer to Assembly Practice (Section 2.12) in this
installation and Servicing Instructions for further guidance.