13
The Vitodens 222-F, B2TB is designed for closed loop,
forced circulation hot water heating systems only. Use
standard friction loss method for pipe sizing. Observe
boiler maximum and minimum flow rate limitations. If
system flow rate exceeds boiler maximum flow rate
(as stated below), falls below the minimum flow rate
or if system flow rate is unknown, Viessmann strongly
recommends the installation of a low-loss header.
An alternative method may be used, such as primary
secondary piping using closely spaced tees.
A low-loss header offers additional benefits not provided
by a pair of closely spaced tees. Viessmann therefore
strongly recommends and prefers the use of a low-loss
header over closely spaced tees. Once the low-loss header
is connected, the built-in low-loss header logic of the
Vitodens 222-F boiler ensures the required
U
t across the
system through the sensory communication between the
low-loss header and the boiler.
Pressure drop (primary circuit) for
Vitodens 222-F, B2TB 19 and 35
Boiler maximum flow rate 6.2 GPM (1400 L/h)
Boiler maximum flow rate 6.2 GPM (1400 L/h)
Model B2HB 19
1 boiler
Output (NG/LPG)
MBH
64
U
t for NG/LPG
20ºF (11ºC) rise GPM (L/h)
6.4 (1453)
25ºF (14ºC) rise GPM (L/h)
5.1 (1163)
30ºF (17ºC) rise GPM (L/h)
4.3 (969)
35ºF (19.5ºC) rise GPM (L/h)
3.7 (830)
40ºF (22ºC) rise GPM (L/h)
3.2 (727)
Model B2HB 35
1 boiler
Output (NG/LPG)
MBH
117
U
t for NG/LPG
20ºF (11ºC) rise GPM (L/h)
11.7 (2657)
25ºF (14ºC) rise GPM (L/h)
9.4 (2126)
30ºF (17ºC) rise GPM (L/h)
7.8 (1771)
35ºF (19.5ºC) rise GPM (L/h)
6.7 (1518)
40ºF (22ºC) rise GPM (L/h)
5.9 (1328)
Flow rate
Supply head pressure (water)
Waterside Flow (primary circuit)
Vitodens 222-F, B2TB 19 and 35 Technical Data
Содержание Vitodens 222-F B2TB
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Страница 14: ...10 Technical Data Vitodens 222 F B2TB 19 and 35 Technical Data ...
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Страница 45: ...41 Application 5 Operational Setup continued Notes Comments ...
Страница 49: ...45 Application 6 Operational Setup continued Notes Comments ...
Страница 51: ...47 47 Global presence Local commitment ...