Viessmann VITOCELL 100-E Installation And Service Instructions Manual page 8

Installation information
Product information
A
B
C
D
E
F
G
H
Fig. 4 Back
8
(cont.)
Heating water flow 1 (HV1) to the heating
A
circuits/air vent valve (EL)
Sensor well 1 (SPR1)
B
for cylinder temperature sensor
Heating water flow 2 (HV2)
C
from the heat source
Sensor well 2 (SPR2)
D
for cylinder temperature sensor
Heating water flow 3 (HV3) / heating water return
E
1 (HR1)
Sensor well (SPR3)
F
for cylinder temperature sensor
Heating water return 2 (HR2)
G
from the heating circuits
H Heating water return 3 (HR3) to the heat source /
drain outlet (E)