Vitodens 200-W B2HA 88-150, 311- 530 Technical Data
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5683 718 - 19
Low-Loss Header Information
Low-Loss Header 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
88,
311
2
25
(5700)
50
(11400)
System Flow
Rate
LLH Required
LLH Model
GPM
(L/h)
58.8
(13353)
Yes
200/100
47.04
(10683)
Yes
200/100
39.2
(8902)
Yes
160/80
33.6
(7631)
Yes
160/80
29.4
(6677)
Yes
120/80
Yes
B2HA
88,
311
3
25
(5700)
75
(17100)
System Flow
Rate
LLH Required
LLH Model
GPM
(L/h)
88.2
(20030)
Yes
250/150
70.56
(16024)
Yes
200/120
58.8
(13353)
Yes
200/120
50.4
(11446)
Yes
200/120
44.1
(10015)
Yes
160/80
Yes
B2HA
88,
311
4
25
(5700)
100
(22800)
System Flow
Rate
LLH Required
LLH Model
GPM
(L/h)
117.6
(26707)
Yes
250/150
94.08
(21366)
Yes
250/150
78.4
(17805)
Yes
200/120
67.2
(15261)
Yes
200/120
58.8
(13353)
Yes
200/120
Yes
B2HA
88,
311
5
25
(5700)
125
(28500)
System Flow
Rate
LLH Required
LLH Model
GPM
(L/h)
147
(33384)
Yes
300/200
117.6
(26707)
Yes
250/150
98
(22256)
Yes
250/150
84
(19076)
Yes
250/150
73.5
(16692)
Yes
200/120
Yes
B2HA
88,
311
6
25
(5700)
150
(34200)
System Flow
Rate
LLH Required
LLH Model
GPM
(L/h)
176.4
(40060)
Yes
300/200
141.12
(32048)
Yes
300/200
117.6
(26707)
Yes
250/150
100.8
(22892)
Yes
250/150
88.2
(20030)
Yes
250/150
Yes
B2HA
88,
311
7
25
(5700)
175
(39900)
System Flow
Rate
LLH Required
LLH Model
GPM
(L/h)
205.8
(46737)
Yes
400/200
164.64
(37390)
Yes
300/200
137.2
(31158)
Yes
300/200
117.6
(26707)
Yes
250/150
102.9
(23369)
Yes
250/150
Yes
B2HA
88,
311
8
25
(5700)
200
(45600)
System Flow
Rate
LLH Required
LLH Model
GPM
(L/h)
235.2
(53414)
Yes
400/200
188.16
(42731)
Yes
300/200
156.8
(35609)
Yes
300/200
134.4
(30522)
Yes
300/200
117.6
(26707)
Yes
250/150
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
88,
311
1
25
(5700)
25
(5700)
System Flow
Rate
LLH Required
LLH Model
GPM
(L/h)
29.4
(6677)
Yes
120/80
23.52
(5341)
Optional
120/80
19.6
(4451)
Optional
80/60
16.8
(3815)
Optional
80/60
14.7
(3338)
Optional
80/60
Supplied
Sizing of Low-Loss Header in a Residential/Commercial Single-Boiler Application
