4 Installation
Installation manual
21
R2CND0 R2TND012~024A4AA
Wall-mounted condensing boiler
3P469346-4E – 2017.07
g
h
L
i
j
a
b
c
b
d
e
f
a
Flex kit PP Dn 60-80 or Dn 80
b
Spacer
c
Extension Flex PP 80 mm
d
Connector Flex-Flex PP 80 mm
e
Chimney connection 60/100 or 80/125
f
90° elbow 60/100
Optional:
g
Tee 60/100 with measurement point
h
30° elbow 60/100
i
45° elbow 60/100
j
Extension 80/125
L = 500-1000 mm
Instead of 60/100, 80/125 flue ducts can be used at the outlet of the
boiler. In that case, the parts below are used:
a
b
c
d
e
a
60/100 to 80/125 adapter
b
90° elbow 80/125
c
45° elbow 80/125
d
30° elbow 80/125
e
Extension 80/125
L = 500-1000 mm
Allowable flue length for C93x (for R2CND* )
Shaft
Chimney
cross-
section
Parameter
C3
“3”
“5”
60-100
Concentric
circular and smooth
100
9.0
15.0
DN 60 Flex
circular and rough
106
4.2
7.0
DN 60 Flex
circular and rough
100
3.0
5.0
DN 60 Flex
square and rough
95
4.2
7.1
DN 60 Flex
square and rough
90
3.2
5.3
80-125
Concentric
circular and smooth
124
28.0
99.0
DN 80 Flex
circular and rough
140
15.0
52.9
Allowable flue length for C93x (for R2CND* )
DN 80 Flex
circular and rough
130
9.6
33.8
DN 80 Flex
circular and rough
120
3.6
12.8
DN 80 Flex
square and rough
140
19.6
69.2
DN 80 Flex
square and rough
130
17.0
60.0
DN 80 Flex
square and rough
120
12.2
43.0
DN 80 Star
square and rough
140
47.5
167.8
DN 80 Star
square and rough
120
33.3
117.9
Allowable flue length for C93x (for R2TND*)
Chimney cross-section PP 60 mm rigid duct
PP 60 mm flexible
duct
Circular Ø100 mm
7.2 m
2.9 m
Circular Ø120 mm
9.3 m
4.5 m
Circular Ø140 mm
9.9 m
4.8 m
Square 100×100 mm
8.8 m
5.1 m
Square 120×120 mm
9.7 m
6.1 m
Square 140×140 mm
10.0 m
6.2 m
Chimney cross-section PP 80 mm rigid duct
PP 80 mm flexible
duct
Circular Ø120 mm
5.0 m
5.0 m
Circular Ø140 mm
15.4 m
15.4 m
Circular Ø160 mm
18.6 m
18.6 m
Square 120×120 mm
5.0 m
13.3 m
Square 140×140 mm
15.4 m
18.3 m
Square 160×160 mm
18.6 m
19.4 m
Equivalent length of options
45° elbow 60/100 mm
1.0 m
90° elbow 60/100 mm
1.5 m
45° elbow 80/125 mm
1.0 m
90° elbow 80/125 mm
1.5 m
Maximum allowable length of the flue duct up to common
chimney is 2 1 60/100 90° elbow.
Subtract equivalent length value of bends from the allowable flue
length value.
Type B53 (open flue system)
The boiler draws combustion air from the installation room and
expels flue gas through the flue to above the roof (1).
The boiler draws combustion air from the installation room and
routes flue gas through the moisture-resistant chimney to above the
roof (2).
Allowable flue length for B53
R2TND*
R2CND*
Flue duct 60 mm
24.0 m
20.0 m
Flue duct 80 mm
130.0 m
112.0 m
