Radiant RKA 25, Instruction Manual, Page: 33 / 56

INSTALLATION INSTRUCTIONS
CONDENSING BOILOES WITH STORAGE - TG05A095.A0306
29
Flue type -
kit V
Vertical coaxial flue system in PPS polypropylene.
Discharges exhaust fumes and draws air directly from high Level.
Suitable for condensing boilers
only.
Discharges exhaust gases and draws
comburent air at roof level by means of
two coaxial ducts. The external Ø 100 duct
draws the comburent air while the Ø 60
plastic inner duct discharges the exhaust
fumes.
MAXIMUM FLUE LENGTH: 5 m.
The maximum flue length (linear
equivalent) is obtained by summing 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:
Ø 100/60 x 90° bend = 0.8 m.
Ø 100/60 x 45° bend = 0.5 m.
N.B. : USE ONLY RADIANT TYPE-
APPROVED FLUE SYSTEMS FOR
DISCHARGING EXHAUST GASES
AND DRAWING COMBURENT AIR.
Suitable for condensing boilers
only.
Discharges exhaust gases and draws
combustion air at roof level by means
of two coaxial ducts. The external Ø
100 duct draws the combustion air
while the Ø 60 plastic inner duct
discharges the exhaust fumes.
MAXIMUM FLUE LENGTH: 5 m.
The
maximum flue length (linear
equivalent) is obtained by summing
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:
Ø 100/60 x 90° bend = 0.8 m.
Ø 100/60 x 45° bend = 0.5 m.
N.B. : USE ONLY RADIANT TYPE-
APPROVED FLUE SYSTEMS FOR
DISCHARGING EXHAUST GASES
AND DRAWING COMBUSTION AIR.
LEGEND
HR
Ø 3/4” Heating Return
HWO Ø 1/2” D.H.W
G Ø 1/2” GAS
CWI Ø 1/2” D.C.W
HF Ø 3/4” Heating Flow
SC Condensate drain
Ø100
Ø60
max. 5.00
mt.
= =
490
450
90
0
198
S