Checking The Sensor Well And All Connections On The Heating Water Side For Tightness - Viessmann Vitocrossal CRU 800 Service Instructions For Contractors

Commissioning, inspection, maintenance
Checking the sensor well and all connections on the heating water side for
tightness
A
B
Fig. 2
Female connection for control equipment: R
A
B Boiler flow: PN 6, DN 100 with sensor well for
boiler water temperature sensor
Female connection for pressure limiter: R
C
Safety connection (safety valve): R 2
D
Boiler return 2: PN 6, DN 100
E
F Boiler return 1: PN 6, DN 100
Drain outlet: R 1
G ¼
Condensate drain: R
H
Check the connection for the sensor well and the mini-
mum pressure switch (low water indicator) for tight-
ness.
10
C
D
½
½
½
E
F
G
H