Viessmann Vitodens 200-W B2HA 100 Technical Data Manual page 14

Low-Loss Header Information
Low-Loss Header Application
Sizing of Low-Loss Header in a Residential/Commercial Single-Boiler Application
Boiler No. of Boiler
Model Boilers Max.
Flow
Rate
B2HA 1 38
150 (8600)
*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.
Sizing of Low-Loss Header in a Commercial Multiple-Boiler Application
Boiler No. of Boiler
Model Boilers Max.
Flow
Rate
B2HA 2 38
150 (8600)
B2HA 3 38
150 (8600)
B2HA 4 38
150 (8600)
B2HA 5 38
150 (8600)
B2HA 6 38
150 (8600)
B2HA 7 38
150 (8600)
B2HA 8 38
150 (8600)
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 sensor - standard equipment of the cascade control Vitotronic 300-K MW2B:
for use in multiple boiler applications.
14
(continued)
Total Typical System Flow Rates
Flow
Rate
*1
t
38 System Flow
(8600) Rate
LLH Required
LLH Model
Total Typical System Flow Rates
Flow
Rate
t *1
76 System Flow
(17200) Rate
LLH Required
LLH Model
114 System Flow
(25800) Rate
LLH Required
LLH Model
152 System Flow
(34400) Rate
LLH Required
LLH Model
190 System Flow
(43000) Rate
LLH Required
LLH Model
228 System Flow
(51600) Rate
LLH Required
LLH Model
266 System Flow
(60200) Rate
LLH Required
LLH Model
304 System Flow
(68800) Rate
LLH Required
LLH Model
Vitodens 200-W B2HA 100 to 150 Technical Data
°F 20 25
(°C) (11) (14)
GPM 49.5 39.6
(L/h) (11243) (8994)
Yes Optional
200/120 160/80
°F 20 25
(°C) (11) (14)
GPM 99 79
(L/h) (22487) (17990)
Yes Yes
250/150 200/120
GPM 149 119
(L/h) (33731) (26985)
Yes Yes
300/200 300/200
GPM 198 158
(L/h) (44974) (35979)
Yes Yes
400/200 300/200
GPM 247.5 198
(L/h) (56213) (44971)
Yes Yes
400/200 400/200
GPM 297 237.6
(L/h) (67461) (53969)
Yes Yes
450/250 400/200
GPM 346.5 277
(L/h) (78705) (62964)
Yes Yes
450/250 450/250
GPM 396 317
(L/h) (89949) (71959)
Yes Yes
500/300 450/250
30 35
(17) (19.5)
33 28
(7495) (6424) (5631)
Optional Optional Optional
120/80 120/80 120/80
30 35
(17) (19.5)
66 57
(14991) (12850) (11244)
Yes Yes
200/120 200/120 200/120
99 85
(22487) (19275) (16865)
Yes Yes
250/150 250/150 200/120
132 113
(29983) (25700) (22487)
Yes Yes
300/200 250/150 250/150
165 141.4
(37476) (32122) (28107)
Yes Yes
300/200 300/200 300/200
198 170 148.5
(44974) (38549) (33731)
Yes Yes
400/200 300/200 300/200
231 198
(52470) (44974) (39352)
Yes Yes
400/200 400/200 300/200
264 226
(59966) (51399) (44974)
Yes Yes
450/250 400/200 400/200
Viessmann
Low-loss
Temp.
Sensor
Required*2
40
(22)
25 Optional
Viessmann
Low-loss
Temp.
Sensor
Required*2
40
(22)
50 Yes
Yes
74 Yes
Yes
99 Yes
Yes
124 Yes
Yes
Yes
Yes
173 Yes
Yes
198 Yes
Yes