Viessmann Vitocell 100-B Service Instructions Manual page 7

Ball valve positions
Ball valve in the solar heating water flow and in the
solar heating water return inside the Solar-Divicon:
■ In line with the pipe run:
– Open
■ Perpendicular to the pipe run:
Closed
–
At 45° angle to the pipe run:
■
Check valve open
–
– The 45° angle (towards the right or left) is only
required for filling and draining the system.
Venting the solar heating water flow (HFs)
Vent at the air vent valve on the air trap.
Setting the flow rate on the solar side
With a 3-stage solar circuit pump: Adjust via the flow
meter at the solar heating water return.
Flushing and filling
Use the fill valve on the solar heating water return.
High limit safety cut-out (HLSC)
Setting the response temperature
Note
The rotary selector is located in the enclosure.
Fig. 1
1. Open the casing.
2. At the setting scale, select 95 °C.
Vitosol service instructions
With a high efficiency solar circuit pump: Fully open
the ball valve of the flow meter. The flow rate is elec-
tronically controlled.
Note
Optional connection of a manual solar fill pump (solar
thermal accessory) to raise the pressure after venting.
Resetting the high limit safety cut-out
Note
The water temperature must have dropped by at least
20 K.
Fig. 2
Press reset button .
A
Operating principles
7