Potterton eurocondense four 125 kw, Installation, Operation And Maintanance Manual, Page: 45 / 148

6.4.2 Flue gas system
Fig.23 EC four with flue gas piping system SAS for room air-dependent and room air-independent operation
C
33
C
33
C
83
B
23
B
23P
C
53
C
53
rear ventilation
air inlet
50 cm
2
- 450 cm
2
depending on boiler output
air inlet
1 x 150 cm
2 or
1 x 75 cm 2
air inlet
50 cm
2
- 450 cm
2
depending on boler
output
air inlet
1 x 150 cm
2
or
1 x 75 cm
2
air inlet
1 x 150 cm
2
or
1 x 75 cm
2
air inlet
1 x 150 cm
2
or
1 x 75 cm
2
rear ventilation
wall connection set
WAS
RA-0000415
In case of roof central heating installations, the installation of the roof
duct is only possible if the flue gas pipe can be routed directly (without
going through other rooms) through the roof.
In case of installation C
33
(suction of the combustion air through vertical
roof duct) the mouth of the air pipe must be fitted with a rain hood.
In case of installation C
53
and C
83
(suction of the combustion air through
the outer wall) the wall connection kit WAS with filter mat and air pres­
sure monitors must be used.
Flue gas pipeline lengths for room air-dependent operation
Tab.7 Permissible exhaust gas pipeline lengths for room air-dependent operation
Model EC four
125 kW
EC four
170 kW
EC four
215 kW
EC four
260 kW
EC four
300 kW
Flue gas pipe-Ø mm 160 160 160 200 160 200 160 200
Max. pipe length incl. 1
elbow 87°
m
60 50 30 60 18 60 8 60
These lengths only apply to single boilers.
For more elbows, the following deductions have to be made
1 elbow 87°: 5 m
1 elbow 45°: 2 m
1 elbow 15°: 1 m
A calculation by Potterton is required for individual cases of room air-inde­
pendent operation of the EC four.
6 Installation
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