INSTALLATION INSTRUCTIONS
26
Vertical Flue System - Type V
Vertical concentric flue kit Ø60/100 polypropylene inner pipe.
Discharges exhaust fumes and draws air directly from roof level.
Suitable for condensing boilers only.
Discharges exhaust gases and draws combustion air at roof
level by means of two concentric ducts. The external Ø100
duct draws the combustion air while the Ø60 plastic inner
duct discharges the exhaust fumes.
MAXIMUM FLUE LENGTH:
RKR 24 - 6 m
RKR 28 - 6 m
RKR 34 - 3 m
The maximum flue length (linear equivalent) is obtained
by totalling the length of linear pipe and the equivalent
lengths of each bend fitted.
The linear equivalent is intended as being the total length of
the duct from the connection with the combustion chamber of
the appliance, excluding the first bend.
The linear equivalent of additional bends is as follows:
Ø60/100 x 90° = 0.8 m.
Ø60/100 x 45° = 0.5 m.
N.B.: USE ONLY RADIANT TYPE-APPROVED FLUE
SYSTEMS FOR DISCHARGING EXHAUST GASES AND
Ø100
Ø60
131
7
3
0
285
410
163
m
a
x
6
m
Ø60
Ø100
