Viessmann Vitotwin 300-W Installation And Service Instructions For Contractors page 57

Micro chp boiler based on stirling engine natural gas version
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Terminal connections
B
7
6
5
4
3
2
P
X100
A ON/OFF switch in the control unit
B Internal circulation pump
2. Connect the power cable to an appli-
ance junction box on site.
Note
Replace the main power meter with a bi-
directional power meter.
(cont.)
230 V/
50 Hz
A
M
kWh
1~
C
Z
3
2 U
N
L
Installation sequence
C AC meter
57

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