Viessmann VITODENS 200-W Technical Data Manual page 17
Gas-fired wall-mounted condensing boiler 12 to 285 mbh (3.5 to 83.5 kw) multi-boiler installation 480 to 2280 mbh for models 45, 60 and 80
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Also See for VITODENS 200-W:
- Installation and service instructions manual (188 pages) ,
- Installation instructions manual (184 pages) ,
- Service instructions manual (150 pages)
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Vitodens 200-W, B2HA 19 to 80 Technical Data
Low-Loss Header Application
Sizing of Low-Loss Header in a Commercial Multiple-Boiler Application
Boiler
No. of
Boiler
Model
Boilers
Max.
Flow
Rate
B2HA
2
25
80
(5700)
(11400)
B2HA
3
25
80
(5700)
(17100)
B2HA
4
25
80
(5700)
(22800)
B2HA
5
25
80
(5700)
(28500)
B2HA
6
25
80
(5700)
(34200)
B2HA
7
25
80
(5700)
(39900)
B2HA
8
25
80
(5700
(45600)
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.
*2 Low-Loss temperature sensor - standard equipment of the cascade control Vitotronic 300-K MW2B:
for use in multiple boiler applications.
(continued)
Total
Typical System Flow Rates
Flow
Rate
t
*1
(°C)
50
System Flow
GPM
Rate
(L/h)
LLH Required
LLH Model
75
System Flow
GPM
Rate
(L/h)
LLH Required
LLH Model
100
System Flow
GPM
Rate
(L/h)
LLH Required
LLH Model
125
System Flow
GPM
Rate
(L/h)
LLH Required
LLH Model
150
System Flow
GPM
Rate
(L/h)
LLH Required
LLH Model
175
System Flow
GPM
Rate
(L/h)
LLH Required
LLH Model
200
System Flow
GPM
Rate
(L/h)
LLH Required
LLH Model
°F
20
25
(11.0)
(14.0)
52.0
41.6
(11811)
(9449)
Yes
Yes
200/120
200/120
78
62.4
(17717)
(14174)
Yes
Yes
200/120
200/120
104
83.2
(23223)
(18898)
Yes
Yes
250/150
250/150
130
104
(29526)
(23621)
Yes
Yes
300/200
250/150
156
125
(35434)
(28347)
Yes
Yes
300/200
300/200
182
145.6
(41340)
(33072)
Yes
Yes
300/200
300/200
208
166.4
(47246)
(37797)
Yes
Yes
400/200
300/200
Low-Loss Header Information
30
35
(17.0)
(19.5)
(22.0)
35
30
(7874)
(6749)
(5906)
Yes
Yes
120/80
120/80
120/80
52
44.6
(11811)
(10124)
(8859)
Yes
Yes
200/120
200/120
160/80
69.3
59.4
(15749)
(13499)
(11811)
Yes
Yes
200/120
200/120
200/120
87
74.3
(19684)
(16872)
(14763)
Yes
Yes
250/150
200/120
200/120
104
89
(23623)
(20248)
(17717)
Yes
Yes
250/150
250/150
200/120
121.3
104
(27560)
(23623)
(20670)
Yes
Yes
300/200
250/150
250/150
138.7
119
(31497)
(26997)
(23623)
Yes
Yes
300/200
250/150
250/150
Viessmann
Low-loss
Temp.
Sensor
Required*2
40
26
Yes
Yes
39
Yes
Yes
52
Yes
Yes
65
Yes
Yes
78
Yes
Yes
91
Yes
Yes
104
Yes
Yes
17
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