Heating Circuit - Viessmann VITODENS 222-F Technical Data Manual

Vitodens 222-F, B2TA 19 and 35 Technical Data

Heating Circuit

Viessmann offers a variety of Grundfos heating circuit/
boiler pumps which meet typical Vitodens system
installation requirements (see "Heating circuit pump field
supplied)". 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.
Model
Flow rate
20º F t
25º F t
30º F t
35º F t
40º F t
Flow limitation
Low-Loss Header Application
Sizing of Low-Loss Header in a Residential Single-Boiler Application
Boiler No. of Boiler
Model Boilers Max.
Flow
Rate
GPM
(L/h)
B2TA 1 5.3
19 (1200)
B2TA 1 6.2
35 (1400)
*1 For system t < 20° F use low-loss header sizes for t 20° F.
*2 Low-Loss temperature sensor - optional equipment for use in single-boiler applications.
Note: The Vitodens 222-F comes equipped with a factory preset integrated boiler pump.
GPM (L/h)
GPM (L/h)
GPM (L/h)
GPM (L/h)
GPM (L/h)
GPM (L/h)
Typical System Flow Rates
°F
t *1
(°C)
System Flow GPM
Rate (L/h)
LLH Required Optional
LLH Model
System Flow GPM
Rate (L/h)
LLH Required
LLH Model
IMPORTANT
Pump selection must be based on accurate system flow
and pressure drop calculations (includes DHW sizing).
B2TA 19
6.1 (1385)
4.9 (1113)
4.0 (909)
3.5 (795)
3.1 (704)
4.4 (1200)
20 25
(11.0) (13.9) (16.8)
6.1 4.9
(1385) (1108)
Optional Optional
80/60 80/60 80/60
11.4 9.1
(2589) (2071) (1726)
Yes Yes
80/60 80/60 80/60
Pump Information
B2TA 35
--
--
--
6.5 (1476)
5.7 (1295)
6.2 (1400)
30 35
(16.1) (13.4)
4.1 3.5
(924) (792) (693)
Optional Optional
80/60 80/60
7.6 6.5
(1480) (1295)
Yes Optional Optional
80/60 80/60
Viessmann
Low-loss
Temp.
Sensor
Required*2
40
3.1 Yes
5.7 Yes
9