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For all other heaters, the branch circuit must be protected by a fuse or
circuit breaker supplied by others.
NOTE: Dress wires with wire ties provided. Separate all wires from
incoming power leads.
4. Insert second field power line through the Electrical Panel top hole
(see
Fig. 12
or
Fig.
13) and connect to unit contactor black and
yellow leads using sire nuts. Ground electrical equipment in the
appropriate locations.
5. Separate all wires from incoming power leads.
6. Close electrical access panel.
START-UP
CAUTION
!
ELECTRICAL SHOCK HAZARD
Failure to follow this caution may result in personal injury or death.
Before proceeding, verify that all wiring is correct per factory approved
schematic.
Notify
equipment
discrepancies.
NOTE: Relay, Rectifier and Time Delay Boards
Each heater element is controlled by a 24VDC control relay. Each
control relay is energized by a small rectifier board attached directly to
relay coil terminals. When possible - one rectifier board is used to
control a second relay.
The rectifier board converts incoming 24v AC control signal to DC.
Some heaters may have up to four relays. The second and/or third relay
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
supplier
immediately
of
Fig. 10 – Single Point Connections For Heaters With Circuit Breakers
rectifier board may also have a time delay feature and a small jumper
wire built into it. With the jumper uncut, the time delay is approximately
5 sec after the initial first stage. When jumper is cut at factory, this
provides an 8 sec delay.
1. Refer to base unit installation instructions as required.
2. Check for loose terminal connections.
3. Check that all fuse and circuit breaker short circuit interrupting
ratings are adequate.
4. Turn on unit and heater power.
5. Set thermostat to call for heat.
6. Check operation of heater.
7. Check that airflow across the heater is at or above the minimum
recommended CFM requirement (See
8. Use of accessory electric heaters that are not tested and approved by
the original equipment manufacturer of the packaged air
conditioner or heat pump is not recommended and will not be
warranted by the original equipment manufacturer. Additionally,
damage caused by such heaters to the equipment will not be
any
covered under warranty by the original equipment manufacturer.
TROUBLESHOOTING
1. Circuit Breakers-Malfunction will interrupt power to the unit.
Check for cause of failure, reset or replace.
2. Limit Switch-Malfunction prevents heating element(s) from being
energized. Replace switch if malfunction occurs.
3. Relay-Malfunction will not allow heater to energize. Replace faulty
relay. Do not attempt to repair.
9
Table
2).
POWER LINE
TO HEATER
24V FIELD
WIRING BOX
A10381
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