Viessmann Vitoradial 300-T VR3 Service Instructions For Contractors page 34

Specification
Specification
Rated heating output
T /T = 50/30 °C
F R
T /T = 80/60 °C
F R
Rated heat input
CE designation
Permissible flow temperature (= safety temperature) °C
Permiss. operating pressure
Weight boiler body
Total weight
Boiler incl. thermal insulation, burner and boiler control
unit
Total weight
Boiler incl. thermal insulation and boiler control unit
Capacity boiler water
Boiler connections
Boiler flow and return
Safety connection (safety valve) (male thread)
Drain (male thread)
Flue gas parameters
*1
Temperature (at a return temperature of 30 °C)
At rated heating output
■
At partial load
■
Temperature (at a return temperature of 60 °C)
Flue gas mass flow rate
For natural gas
■
For fuel oil EL
■
Available draught at the flue outlet
Flue gas connection
Standard seasonal efficiency [to DIN]
(for operation with fuel oil)
At heating system temperature
75/60 °C
Standby loss q
B,70
*1 Values for calculating the size of the flue system to EN 13384, relative to 13.2 % CO
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 60 % of rated heating output. If the partial load differs (depending on operat-
ing mode), calculate the flue gas mass flow rate accordingly.
34
kW 101 129 157 201 263 335 425
kW 94 120 146 188 245 313 407
kW 97 124 151 194 254 323 420
CE-0035BU104
bar
kPa
kg 370 405 460 520 700 800 950 1015
kg 510 545 610 680 870 970
kg
— — —
litres 185 225 265 310 490 450 600
PN 6 65 65 65
DN
R 1 1 1
¼ ¼ ¼
R 1 1 1
¼ ¼ ¼
°C 35 40 45
°C 30 35 40
°C 60 60 65
kg/h 1.5225 x combustion output in kW
kg/h 1.5 x combustion output in kW
Pa/
mbar
mm
7
% 97 (H
% 1.5 1.2 1.1
for fuel oil EL and 10 % CO
2
545
522
538
110
4
400
—
119 1305
— — —
0
650
65 65 80 100 100
1 1 1 2
¼ ½ ½
1 1 1 1 1
¼ ¼ ¼ ¼
40 40 45 55 55
35 35 40 37 41
60 70 70 75 80
70/0.7
200
) [gross cv]
s
1.0 1.0 0.9 0.9 0.8
for
2
—
2
¼