Power Failure Provision - Viessmann VITOLIGNO 300-C Installation And Service Instructions Manual

Vitoligno 300-C Installation/Service
Electrical Connections
Provide disconnect means and overload protection as required
240VAC-1Ph-60Hz L1, L2, N, G

Power Failure Provision

(continued)
Power Supply
20 Amps (full load amperage)
DIN rail X1
Power supply
Power supply fÖ.
IMPORTANT
Electrical installations must comply with the latest edition of:
In the U.S.A., the National Electrical Code (NEC),

ANSI/NFPA 70 and any other state, local codes and/or
regulations.
In Canada, the Canadian Electrical Code (CEC),

CSA C22.1 Part 1 and any other province, territory,
local codes and/or regulations.
Power supply for DHW recirculation pump
Connect DHW pumps with standalone functions directly
to the 120V supply.
Power connection via the Viessmann control unit is not
permissible.
1. Check that the power cable to the control unit is
protected with a fuse.
2. Connect the power cable in the junction box and the
control unit (on site).
WARNING
Incorrect core assignment can result in serious injury and
damage to the appliance. Take care not to interchange
wires "L1", "L2", "N" and "G".
Color coding to UL:
GN Green
BK Black
WT White
Backup power supply or backup generator is recommended
to ensure continuous operation in the event of power failure.
Do not open boiler doors

Do not add fuel to the boiler

The boiler control will automatically restart once power

is restored
Upon restoration of power check and clear any fault

codes
Installation
51