Viessmann Vitodens 100-W B1HA 26 Installation And Service Instructions Manual page 74

Additional Information
Technical Data
B1KA on demand hot water operation
Boiler Model No.
Max. Input NG and LPG
(DHW production only)
Max. boiler temperature (during DHW production)
DHW supply temperature
Continuous draw rate *
at  t= 77ºF (43K)
Max. flow through heat exchanger
Maximum allowable working pressure (potable water)
Test pressure
Integrated pump flow rate
DHW production @ 23 ft. (9.8 m)
Head pressure
Heating system operation
with system side additional
drop in pressure of max. 6 ft. of water (1.8 m)
Expansion tank *2
(for heating system side)
Precharge pressure
Capacity
1
* DCW and DHW temperature rise would be proportional. Maximum DHW supply temperature is 140ºF (60ºC).
*2 Determine the required size of the expansion tank to be installed in the heating system.
If the integral expansion tank is insufficient, install a suitably sized expansion tank on site.
74
(continued)
1
Vitodens 100-W, B1HA/B1KA 26 to 125 Combi Installation/Service
MBH
ºF (ºC)
ºF (ºC)
USG/min.
(L/h)
USG/min.
(L/h)
USG/min.
(L/h)
USG/min.
(L/h)
psig
USG
B1KA 35, 125
149
kW 43.7
176 (80)
140 (60)
3.5
(795)
3.7
(840)
psi 150
psi 300
5.63
1278
6.2
(1408)
12
2.1
(L) (8)