Viessmann Vitocell 300-B Service Instructions For Contractors page 9

Further details regarding the individual steps
Cleaning the inside of DHW cylinders
A
C
D
E
C
B
F
G
H
H
Commissioning, inspection, maintenance
(cont.)
1. Drain the DHW cylinder from the
DHW side.
2. Remove top panel A or cover B,
thermal insulation mat C and ther-
mometer sensor D.
3. Remove flange cover E or cylinder
locking cap F with stainless steel
disc G and gaskets H.
4. Disconnect the DHW cylinder from
the pipework to prevent cleaning
agents and contaminants entering
the pipework.
5. Remove loose deposits with a high
pressure cleaner.
!
Please note
Pointed or sharp cleaning
equipment will damage the
cylinder interior.
Only use plastic tools to clean
the inside.
9