83
5600 332 v1.3
Vitodens 100-W, WB1B Installation & Service
CombiPLUS Connection
(continued)
Troubleshooting
Checking or replacing the plate type heat exchanger
Legend
A
Three-way valve drive
B
Three-way valve
C
Screws
D
Plate-type heat exchanger
E
Heating water supply
F
Heating water return
G
DCW
H
DHW
1. Shut off and drain the boiler on the heating water
and the DHW side.
2. Disconnect diverting valve motor connection
3. Push the three-way drive
A
slightly upwards.
4. Turn the three-way valve
B
with drive
A
1/8 turn
counterclockwise and remove.
5. Remove two screws
C
from the plate-type heat
exchanger and remove the plate-type heat exchanger
D
with gaskets.
Note:
During removal, small amounts of water may
trickle out and escape from the removed plate-
type heat exchanger.
6. Check the DHW side for scaling and if required, clean
or replace the plate-type heat exchanger.
7. Check the heating water side for contamination
and if required, clean or replace the plate-type heat
exchanger.
8. Install in reverse order with new gaskets.
Note:
Refer to the installation Instructions for
additional mounting options.
To remove,
push to
unlock