Viessmann Vitocrossal 300 Service Instructions Manual page 17

Checking all connections and the sensor well on...
Checking gaskets
A B
H G
Fig. 7
Boiler return 2
A
Boiler return 1
B
Safety connection (safety valve)
C
Sleeve for pressure limiter
D
E Boiler flow
Note
To provide a better overview, the boiler is shown here
without its insulation and casing.
C
K
F
G
H
K
Note
In full load operation, the gaskets can be checked with
an inspection mirror. If required, remove the thermal
insulation sections.
Commissioning, inspection, maintenance
(cont.)
D E
Sleeve for control equipment
Drain outlet
Condensate drain
Connecting flanges for heat exchanger/combustion
chamber module
F
17