Heating Water (Primary) Connections - Viessmann VITOCROSSAL 300 Installation Instructions Manual

Gas fired condensing boiler
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Heating water (primary) connections

KV
RG
SA
KTS
KR2
E
KR1
DB
Female connection for maximum pressure limiter
E
Drain
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
KOA Condensate drain
KR 1 Boiler return 1/KV boiler flow
KR 2 Boiler return 2
KTS Boiler temperature sensor
RG
Female connection for additional control units
SA
Safety connection (safety valve)
WB Female connection for water level limiter
8
WB
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DB
KOA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
for 187 and 248 kW
for 314 kW
. . . . . . . . . . . . . . . . . . . . .
for 408 to
635 kW
for 187 to
314 kW
for 408 to
635 kW
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
for 187 and 248 kW
for 314 to
635 kW
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
R ½"
R 1"
R ½"
PN 6 DN 65
. . . .
PN 6 DN 80
PN 6 DN 100
. . . .
PN 6 DN 50
. . . .
PN 6 DN 80
. .
R ¾"
PN 6 DN 32
. . . .
PN 6 DN 50
. .
R 2"

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