Vitodens 200-W, B2HA 19 to 80 Technical Data
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5683 717 - 03
Pump Information
Heating Circuit / Boiler Pumps
Viessmann offers a variety of Grundfos heating circuit/
boiler pumps which meet typical Vitodens system
installation requirements (see “Heating circuit pump
(field supplied)” or “Boiler pump (field supplied)” in the
Installation Examples starting on page 35). See tables
below for recommended pumps. Refer to the graphs on
page 10 and 11 for the proper waterside boiler friction
loss calculations. The following pumps have been selected
based on boiler heat exchanger head loss and boiler piping
to a low-loss header.
IMPORTANT
Pump selection must be based on accurate system flow
and pressure drop calculations (includes DHW sizing).
Model
B2HA 19
B2HA 28
B2HA 35
Flow rate
20º F
t GPM (L/h)
6.1 (1385)
--
--
25º F
t GPM (L/h)
4.9 (1113)
--
--
30º F
t GPM (L/h)
4.0 (909)
6.1 (1381)
--
35º F
t GPM (L/h)
3.5 (795)
5.2 (1184)
6.5 (1476)
40º F
t GPM (L/h)
3.1 (704)
4.6(1035)
5.7 (1295)
Flow limitation
GPM (L/h)
4.4 (1200)
6.2 (1400)
6.2 (1400)
Recommended boiler pumps
Grundfos UPS 15-58 (3-speed), Taco 0015, Wilo Star S 21 FX
Model B2HA 45
Flow rate
GPM (L/h)
Boiler pressure drop
ft. (m)
Recommended
pump option 1
Grundfos
Recommended
pump option 2
Grundfos
20º F
t
14.6 (3316)
15.8 (4.8)
UPS 26-99FC, 115V, Speed3
--
25º F
t
11.7 (2653)
10.0 (3.1)
UPS 26-99FC, 115V, Speed2
UP 26-64F, 115V
30º F
t
9.7 (2211)
7.5 (2.3)
UPS 26-99FC, 115V, Speed2
--
35º F
t
8.3 (1805)
5.8 (1.8)
UPS 26-99FC, 115V, Speed1
--
40º F
t
7.3 (1658)
4.2 (1.3)
UPS 26-99FC, 115V, Speed1
--
Flow limitation
15.4 GPM (3500 L/h)
Model B2HA 60
Flow rate
GPM (L/h)
Boiler pressure drop
ft. (m)
Recommended
pump option 1
Grundfos
Recommended
pump option 2
Grundfos
20º F
t
--
--
--
--
25º F
t
15.4 (3500)
16.7 (5.1)
UPS 26-99FC, 115V, Speed3
--
30º F
t
12.9 (2937)
12.6 (3.8)
UPS 26-99FC, 115V, Speed3
UP 26-64F, 115V
35º F
t
11.1 (2518)
9.2 (2.8)
UPS 26-99FC, 115V, Speed2
UP 26-64F, 115V
40º F
t
9.7 (2203)
7.5 (2.3)
UPS 26-99FC, 115V, Speed2
--
Flow limitation
15.4 GPM (3500 L/h)
Before using the following pumps for a DHW tank
application, find out the proper pressure drop through the
tank, the required temperature difference through the coil
and system piping head loss of the domestic hot water.
Model B2HA 80
Flow rate
GPM (L/h)
Boiler pressure drop
ft. (m)
Recommended pump Grundfos
20º F
t
--
--
--
25º F
t
20.8 (4724)
9.2 (2.8)
UPS 26-99FC, 115V, Speed3
30º F
t
17.3 (3937)
6.5 (2.0)
UPS 26-99FC, 115V, Speed2
35º F
t
15 (3374)
4.8 (1.5)
UPS 26-99FC, 115V, Speed2
40º F
t
13 (2953)
3.4 (1.0)
UPS 26-99FC, 115V, Speed2
Flow limitation
25 GPM (5700 L/h)
