Check Power Supply Connection; Designating Heating Circuits; Select Gas Type - Viessmann VITODENS 222-F Service Instructions Manual

Vitodens 222-F B2TB 19 and 35 Service

Check Power Supply Connection

An external accessories connection box is integrated
within the Vitodens 222-F, B2TB boiler, which requires a
120V AC power supply from a wall receptacle (12A fuse
protected).
Refer to the Installation Instructions shipped with the
boiler.
Voltage range
The voltage at connector fÖ of the boiler control must be
120V (see wiring diagram).
Neutral conductor
The electrical power supply must have a neutral conductor.

Designating Heating Circuits

Select Gas Type

Heating value (gross)
Specific gravity
Ultimate carbon dioxide (CO
Natural gas
3
Btu/ft 970 to 1100
0.57 to 0.70
) % 11.7 to 12.2
2
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 90 in section entitled
"Additional Information".
In the factory set condition, the heating circuits are
designated "Heating circuit 1", "Heating circuit 2" and
"Heating circuit 3" (if installed).
If the system user prefers, the heating circuits can be
designated differently to suit the specific system.
Information on entering names for heating
circuits see Operating instructions
Note: The Vitodens 222-F, B2TB boiler is factory set to
operate with natural gas. See following subsection
for conversion instructions to liquid propane gas.
1. Ensure that the fuel type listed on the boiler rating
plate is the correct type for the installation being
attempted.
2. Record fuel type in Maintenance Record on page 103.
The Vitodens 222-F boiler is for use with gases whose
characteristics fall within the following ranges.
Do not use any other types of gas.
Liquid propane gas
2466 to 2542
1.522 to 1.574
13.73 to 13.82
Start-up
15