Vitodens 200-W B2HA 88-150, 311- 530 Technical Data
5683 718 - 19
16
Low-Loss Header Application
(continued)
Low-Loss Header Information
Boiler
Model
No. of
Boilers
Boiler
Max.
Flow
Rate
Total
Flow
Rate
Typical System Flow Rates
Viessmann
Low-loss
Temp.
Sensor
Required
t
*1
°F
(°C)
20
(11)
25
(14)
30
(17)
35
(19.5)
40
(22)
B2HA
150,
530
2
38
(8600)
76
(17200)
System Flow
Rate
LLH Required
LLH Model
GPM
(L/h)
99
(22487)
Yes
250/150
79
(17990)
Yes
200/120
66
(14991)
Yes
200/120
57
(12850)
Yes
200/120
50
(11244)
Yes
200/120
Yes
B2HA
150,
530
3
38
(8600)
114
(25800)
System Flow
Rate
LLH Required
LLH Model
GPM
(L/h)
149
(33731)
Yes
300/200
119
(26985)
Yes
300/200
99
(22487)
Yes
250/150
85
(19275)
Yes
250/150
74
(16865)
Yes
200/120
Yes
B2HA
150,
530
4
38
(8600)
152
(34400)
System Flow
Rate
LLH Required
LLH Model
GPM
(L/h)
198
(44974)
Yes
400/200
158
(35979)
Yes
300/200
132
(29983)
Yes
300/200
113
(25700)
Yes
250/150
99
(22487)
Yes
250/150
Yes
B2HA
150,
530
5
38
(8600)
190
(43000)
System Flow
Rate
LLH Required
LLH Model
GPM
(L/h)
247.5
(56213)
Yes
400/200
198
(44971)
Yes
400/200
165
(37476)
Yes
300/200
141.4
(32122)
Yes
300/200
124
(28107)
Yes
300/200
Yes
B2HA
150,
530
6
38
(8600)
228
(51600)
System Flow
Rate
LLH Required
LLH Model
GPM
(L/h)
297
(67461)
Yes
450/250
237.6
(53969)
Yes
400/200
198
(44974)
Yes
400/200
170
(38549)
Yes
300/200
148.5
(33731)
Yes
300/200
Yes
B2HA
150,
530
7
38
(8600)
266
(60200)
System Flow
Rate
LLH Required
LLH Model
GPM
(L/h)
346.5
(78705)
Yes
450/250
277
(62964)
Yes
450/250
231
(52470)
Yes
400/200
198
(44974)
Yes
400/200
173
(39352)
Yes
300/200
Yes
B2HA
150,
530
8
38
(8600)
304
(68800)
System Flow
Rate
LLH Required
LLH Model
GPM
(L/h)
396
(89949)
Yes
500/300
317
(71959)
Yes
450/250
264
(59966)
Yes
450/250
226
(51399)
Yes
400/200
198
(44974)
Yes
400/200
Yes
Note:
for multiple boiler applications when using the Vitodens 200-W, B2HA boilers, refer to the multiple boiler
low-loss distribution manifold installation instructions.
*1 For system
t
<20°F use low-loss header sizes for
t
20°F.
Sizing of Low-Loss Header in a Commercial Multiple-Boiler Application
Boiler
Model
No. of
Boilers
Boiler
Max.
Flow
Rate
Total
Flow
Rate
Typical System Flow Rates
Viessmann
Low-loss
Temp.
Sensor
Required
t
*1
°F
(°C)
20
(11)
25
(14)
30
(17)
35
(19.5)
40
(22)
B2HA
150,
530
1
38
(8600)
38
(8600)
System Flow
Rate
LLH Required
LLH Model
GPM
(L/h)
49.5
(11243)
Yes
200/120
39.6
(8994)
Optional
160/80
33
(7495)
Optional
120/80
28
(6424)
Optional
120/80
25
(5631)
Optional
120/80
Supplied
Sizing of Low-Loss Header in a Residential/Commercial Single-Boiler Application
