107
Rated heating output range
P
cond
: T
F
/T
R
= 50/30
kW
16 - 80 32 - 120 32 - 160 48 - 200 48 - 240 64 - 280
64 - 318
P
n
: T
F
/T
R
= 80/60
kW
15 - 74 29 - 110 29 - 146 44 - 184 44 - 220 58 - 258
58 - 291
Connections
Boiler flow
PN 6
DN
50
50
50
65
65
65
65
Boiler return
PN 6
DN
50
50
50
65
65
65
65
Safety connection
R
1
¼
1
¼
1
¼
1
¼
1
¼
1
¼
1
¼
Drain outlet
R
1
¼
1
¼
1
¼
1
¼
1
¼
1
¼
1
¼
Trap with condensate drain
mm
20
20
20
20
20
20
20
Flue gas parameters
*3
Temperature (at a return tem-
perature of 30 °C)
■
At rated heating output
°C
45
45
45
45
45
45
45
■
At partial load
°C
35
35
35
35
35
35
35
Temperature (at a return tem-
perature of 60 °C)
°C
65
65
65
65
65
65
65
Mass flow rate (for natural gas)
■
At rated heating output
kg/h
120
180
240
300
360
420
477
■
At partial load
kg/h
36
54
72
90
108
126
143
Flue gas connection
DN
200
200
200
200
200
200
200
Draught
at
Pa
80
120
120
110
110
140
140
Flue outlet
mbar
0.8
1.2
1.2
1.1
1.1
1.4
1.4
Max. permissible overpressure
in the header of the flue gas
cascade
*4
Pa
mbar
70
0.7
Product parameters accord-
ing to EnEV
Standard seasonal efficiency
[to DIN]
For heating system temperature
40/30 °C
%
Up to 98 (Hs) [gross cv] / 109 (Hi) [net cv]
For heating system temperature
75/60 °C
%
Up to 96 (Hs) [gross cv] / 106 (Hi) [net cv]
Standby loss qB,70
%
0.6
0.5
0.3
0.6
0.6
0.6
0.6
NOx
NOx class 6, < 56 mg/kWh
*3
Values for calculating the size of the flue system to EN 13384, based on 10 % CO
2
for natural gas
Flue gas temperatures as actual gross values at 20 °C combustion air temperature.
The details for partial load refer to an output of 30 % of the rated heating output. If the partial load differs (subject to burner
operating mode), calculate the flue gas mass flow rate accordingly.
*4
In cascade flue systems at overpressure, the max. permissible draught in the header (connection line) must not be excee-
ded, in order to prevent mutual interference between the burners (operational safety).
Specification
Vitocrossal specification
(cont.)
5839829
Appendix
