71
Type BW
2-stage
3-stage
352.B114 352.B132 352.B156 353.B172
353.B198
Primary circuit
(brine)
Spread
K
3
3
3
3
3
Frost protection limit/freezing point (rec-
ommended heat transfer medium Tyfo-
cor)
°C
-16.1
-16.1
-16.1
-16.1
-16.1
Heat exchanger capacity (brine)
l
21.9
33.6
39.0
43.2
50.4
Nominal flow rate (recommended value
for sizing)
m
3
/h
27.3
31.3
36.8
40.8
47.3
Minimum flow rate
m
3
/h
20.5
23.5
27.6
30.6
35.5
Pressure drop at nominal flow rate (total
pressure drop of evaporator including
connections)
kPa
23
32
33
34
35
Pressure drop at minimum flow rate
kPa
13
18
19
19
19
Secondary circuit
(water)
Spread
K
5
5
5
5
5
Heat exchanger capacity (water)
l
14.9
16.7
19.5
22.6
27.9
Nominal flow rate (recommended value
for sizing)
m
3
/h
19.8
22.9
26.9
29.5
34.1
Minimum flow rate
m
3
/h
14.8
17.1
20.1
22.1
25.6
Pressure drop at nominal flow rate (total
pressure drop of condenser including
connections)
kPa
20
23
27
28
32
Pressure drop at minimum flow rate
kPa
11
13
15
16
18
Max. flow temperature from inlet of pri-
mary circuit B
–
2 °C
°C
73
73
73
73
73
Min. flow temperature, ice store
*1
°C
-10
-10
-10
-10
-10
Notes
The specifications in the datasheets and the product
description describe purely physical characteristics.
Additional assurances or guarantees require a sepa-
rate contractual agreement.
Performance data to EN 14511 corresponds to a tem-
perature spread of 3 K at brine inlet 0 °C and brine out-
let
–
3 °C.
The specified pressure drop refers only to the integral
heat exchangers in the heat pump and the connecting
flange.
A reduced flow rate results in a lower heat pump out-
put. (This also applies in partial load operation)
Failure to achieve the minimum flow rate may lead to
damage and therefore a malfunction of the heat pump.
Setting the frost protection too high (too much anti-
freeze) results in a reduced heating output.
Failure to achieve the minimum frost protection may
lead to damage and therefore a malfunction of the heat
pump.
*1
Parameters need to be adjusted in connection with ice store systems. Viessmann must be consulted. Always observe the
minimum flow rate. It may be necessary to install a flow switch. The max. flow temperature at brine inlet temperature
–10 °C is 55 °C.
Specification
Specification – Vitocal 350-G Pro
(cont.)
5855865
Appendix
Содержание BW 352.B027
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