Preferred JC-22D2 User Manual

SDI-JC-22D2 rev. 11-1-21 page 7 of 22
Wiring Requirements
DANGER
Electric Shock Hazard
Multiple power sources may be present.
Disconnect all electric power sources, local and remote, before servicing
WARNING
This product is intended for use in Commercial and Industrial installations,
it is NOT intended for Residential use.
This product is intended to be used by Trained Operators.
Installation, start-up, and troubleshooting is intended to be done by
Experienced Technicians familiar with Industrial Safety Codes
and all Safety Codes specific to burners and boilers.
This product is NOT a Primary Safety Interlock rated device.
The Relay Outputs should only be used as an
additional auxiliary Operating limit and should not replace or bypass
any Primary Safety Interlock devices required by Safety Codes.
A High Draft Cutout switch and Open Damper position switch are required
to be installed and wired into the flame safeguard system.
Failure to do so can result in equipment damage, injury, or death.
If the Adjustable Starting Draft Option is used,
an additional Outlet Damper Low Fire Start position proving switch
will be required and wired into the flame safeguard low fire circuit.
Incorrect wiring connections to burner/boiler Flame Safeguard controls
can cause Equipment Damage, Injury, or Death
BEFORE installing the wiring:
Consult with the burner control system designer to determine which wiring options on the following pages
should be installed. The JC-22D2 has field selectable options for: Control Type, Actuator type,
Feedforward, Sequence, etc..

All wiring must comply with all local and national electrical codes. Tighten all terminals to 4.4 in-lb. Wire must be stranded
copper, 12-24 ga., 150V / 75 C insulation minimum.

AC and DC wiring must be separated and must not be run in the same conduit to prevent electrical noise coupling.

Use shielded cables where shown, connect shields only where shown, insulate all other shields to prevent accidental
grounding.

Ignition transformer and motor VFD wiring are particularly noisy and should be kept away from all AC and DC wiring.

Relay contacts are rated: 10 A resistive, 9 FLA / ½ Hp / 120 Vac

If the 4-20 mA output will not be used, jumper terminal 42 to 43 to prevent the OUTPUT FAILURE error message.

RS485 is electrically Isolated from all other DC and AC wiring.

All DC '-', terminals are connected together internally.

Terminals 1-20 are Line Voltage AC. Terminals 31-60 are low voltage DC.

An external Line Voltage supply switch or circuit breaker, marked as the disconnect for this instrument, suitably located and
easily reached, and complying with IEC 60947-1 and -3 must be provided.
Fuse:
3.15 amp Slo-Blo, 250 V, 5x20mm (Littlefuse 02393.15HXP, Belfuse 5TT 3.15-R, Preferred Utilities 16740-3.15S)
2 amp Slo-Blo, 250 V, 5x20mm (Littlefuse 0239002.HXP, Belfuse 5TT 2-R, Preferred Utilities 16740-2S)
Caution: To reduce the risk of fire, only replace fuses with the same type.

Preferred JC-22D2 Specifications

General

Brand	Preferred
Model	JC-22D2
Category	Controller
Language	English