Viessmann B1KE Combi Series Installation And Service Instructions Manual page 12

Dimensions
Boiler Dimensions
B1HE/B1KE 150 and 199
Legend
A Safety valve, pressure gauge connection
B Condensate drain
C Heating system supply
D For B1HE series, DHW tank heating supply
For B1KE series, DHW
E Fuel gas connection
F For B1HE series, DHW tank heating return
For B1KE series, DCW
G Heating system return
12
(continued)
Front view
Vitodens 100-W, B1HE/B1KE Combi Installation/Service
Side view