22
KOA
E
KR
SA/KR2
KV
A
B
C
B
A
Fig. 14
A
Fitting assembly connection
B
Safety valve or safety equipment block
C
2nd boiler return
E
Drain and expansion vessel connection
KOA Condensate drain with trap
KR
Boiler return
KR2 Boiler return 2 (depending on version)
KV
Boiler flow
SA
Safety connection
A
Fig. 15
A
Sensor well
Note
Also check the connections for the control equipment
and the minimum pressure switch (low water indicator)
for tightness.
Commissioning, inspection, maintenance
Checking all connections and the sensor well on the heating water side for
tightness
5831036