INSTALLATION INSTRUCTIONS
25
Vertical Flue System - Type CK50
Vertical concentric flue kit Ø80/125 polypropylene inner pipe.
Discharges exhaust fumes and draws air directly from roof level.
Ø125
Ø80
Ø80
Ø125
160
130
Suitable for condensing boilers only.
Discharges exhaust gases and draws combustion air at roof
level by means of two concentric ducts. The external Ø125 duct
draws the combustion air while the Ø80 plastic inner duct
discharges the exhaust fumes.
MAXIMUM FLUE LENGTH:
RK 18 OV - 12 m
RK 25 OV - 10 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 .
The linear equivalent of additional bends is as follows:
Ø80/ 125 x 90° = 1.6 m.
Ø80/125 x 45° = 0.9 m.
N.B.: USE ONLY RADIANT TYPE-APPROVED FLUE
SYSTEMS FOR DISCHARGING EXHAUST GASES AND
DRAWING COMBUSTION AIR.
