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Viessmann VITOCAL 300-A Installation And Service Instructions Manual page 175

Type awc-i-m, aw-o-m compact heat pump with electric drive, 230 v~
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Safety chain, control circuit, main power circuit
3X1.2: Terminal 2 of terminal strip
X1 on PCB 3
1X1.?: Any earth terminal of term-
inal strip X1 on PCB 1
1X2.N: Any neutral conductor term-
inal of terminal strip X2 on
PCB 1
Connection and wiring diagrams
(cont.)
175

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