32
*Appliance fan also downstream of draught diverter
Where 2 or more gas fired boilers are connected to a common natural draught flue, the boilers must be
installed in the same room and have the same type of burner system. A gas fired boiler and a solid fuel or
biomass boiler must not discharge into the same flue. A gas fired boiler and a liquid fired fuel boiler can
discharge into the same flue providing they are both installed in the same room and are force draught.
Appliance type
Primary definition
Natural draught or fan draught
C type
Room sealed
Natural draught
Fan down
stream of heat
exchanger
Fan upstream of
heat exchanger
C1- appliances with a horizontal balanced flue/
inlet air ducts to outside atmosphere.
C11*
C12
C13*
C2 – appliance flue connects to a common duct
system for multi-appliance installations (the
common duct system is part of the building)
C21
C22
C23
C 3 - appliance with vertical balanced flue/inlet
air ducts to outside atmosphere.
C31
C32*
C33*
C4 – appliance with flue system that connects to
a common duct system e.g. ‘U’ duct flue system.
C41
C42
C43
C5 – appliance with a non-balanced flue/inlet air
duct system.
C51
C52
C53
C6 – appliance sold without a flue system
C61
C62
C63
C7 – appliance connected to a vertical flue to
outside atmosphere with the air ducts in the loft
(vertex)
C71
C72
C73
C8- appliance with a non-balanced flue system
with an air supply from outside atmosphere and
flued into a common duct system.
C81
C82
C83
TYPE C13
TYPE C32
TYPE C33
TYPE C13
TYPE C32
TYPE C33
TYPE C13
TYPE C32
TYPE C33
TYPE C13
TYPE C32
TYPE C33
TYPE C13
TYPE C32
TYPE C33
Summary of Contents for EVOMAX 2 30
Page 1: ...EVOMAX 2 CONDENSING BOILER PRODUCT FLUE GUIDE...
Page 5: ...5...
Page 12: ...12 EVOMAX 2 CASCADE 30 900kW...
Page 18: ...18 EVOMAX 2 FLUE OPTIONS...
Page 19: ...19...
Page 41: ...41...
Page 43: ...43 NOTES...
