Check Power Supply Connection - Viessmann VITODENS 100-W WB1B Series Installation And Service Instructions Manual

Initial Start-up, Inspection and Maintenance
Steps
(continued)
Start-up
Start-up
46
1. Fill and vent heating system (continued)
5. Check system pressure.
6. Ensure proper / adequate fuel
supply exists. Open gas shutoff
valve.
Max. boiler
operating pressure............45 psig
Min. boiler
operating pressure....14 to 23 psig
Pressure relief valve..........30 psig

2. Check power supply connection

A power module is supplied with the
Vitodens 100-W boiler, which requires
a 120 VAC power supply.
The voltage at connector X3 must be
120 V (see wiring diagram).
Neutral conductor
The electrical power supply must have
a neutral conductor.
IMPORTANT
In Canada all electrical wiring is to be
done in accordance with the latest
edition of CSA C22.1 Part 1 and/
or local codes. In the U.S. use the
National Electrical Code ANSI/NFPA
70. The heating contractor must
also comply with both the Standard
for Controls and Safety Devices for
Automatically Fired Boilers, ANSI,
ASME CSD-1.
Note:
The outer conductor "L " and the
neutral conductor "N" must not be
interchanged.
See wiring diagram on page 79
entitled "Additional Information" in
this manual.