B1Ka With One Heating Circuit Without Llh - Viessmann B1KA Installation And Service Instructions Manual

Connections
Installation Examples
Vitodens 100-W, B1KA 35, 125 with one heating circuit
without LLH
Legend
AV Air vent
PRV Pressure relief valve (boiler)
DPRV Pressure relief valve (DHW 150 psi)
WSE Water softener equipment
DHW Domestic hot water
DCW Domestic cold water
Vitodens 100-W gas-fired condensing boiler
A
External system controller (field supplied)
B
Heating circuit
C
D Heating circuit pump with room thermostat
connection (field supplied)
Closely spaced tees, 4x pipe Ø or 12 in. (305 mm)*1
E
F Outdoor temperature sensor (OTS)
*1 A low-loss header offers additional benefits not
provided by a pair of closely spaced tees.
Viessmann strongly recommends and prefers the
use of a low-loss header over closely spaced tees.
See page 35 for details.
32
Vitodens 100-W, B1HA/B1KA 26 to 125 Combi Installation/Service
(continued)
Note: The use of a low-loss header is recommended if the
water flow rate is less than 1.7 GPM (400 L/h) or
more than 6.2 GPM (1400 L/h).
The low-loss header is available as an accessory part.
Maximum Flow Rates
Model B1KA
Output
 t
30ºF (17ºC) rise
35ºF (19.5ºC) rise
40ºF (22ºC) rise
* Requires low loss header or closely spaced tees.
35, 125
MBH 117
GPM (L/h) 7.8 (1772)*
GPM (L/h) 6.7 (1522)*
GPM (L/h) 5.9 (1328)