Bosch HK050-1XXX-RE, Installation Instructions Manual

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6 720 220 328
Subject to change without prior notice Revised 05-13
6 HK series
b. Strip the insulation off of the “W1” and “EM”
wires and insert into the thermostat control
wire block on the motor control board. Connect
the other end of the wires to the back of the
thermostat to the supplemental and emergency
heat terminals. Reference the user’s manual for
the thermostat for proper connection.
sTeP 11: ROUTING NEW LINE VOLTAGE WIRES
FROM CIRCUIT BREAKER PANEL TO HEATER
ELECTRICAL BOX
a. Select the proper wire size based upon the
heater electrical load that the blower motor and
electric heater element(s) will require. Refer to
the data tag label that is included in the heater
kit or the electrical data at the end of this
manual. Ensure that all national and local
electrical codes are followed for installation,
wire sizing, and breaker sizing.
b. Select the proper breaker size based upon the
heater electrical load that the heat pump will
require. Refer to the data tag label that is
included in the heater kit or the electrical data
at the end of this manual.
c. Route the new line voltage wiring and the
ground wire from the circuit breaker panel to
the heat pump.
d. Use the knockout provided in the heat pump
corner post as the entry for the electrical
service wiring. A plastic bushing should be used
to protect the wire insulation from the metal
edge of the knockout.
e. Connect one of the line voltage wires to “L1”
terminal connection and the other line voltage
wire to
“L2” terminal connection. Torque to 22
in-lbs.
STEP 12 : Use the ground lug provided in the heater
control box to connect the fi eld ground from the
power supply.
Caution
The heater electrical power provides service to
the unit’s Transformer, electrical heat element(s),
and blower motor only. The Compressor remains
on the original and now isolated circuit.
STEP 13: Remove the wiring diagram that is
adhered to the back side of the front panel. Replace
with the wiring diagram that was included with the
heater kit. Using spray adhesive glue is
recommended.
STEP 14: Place the adhesive back heater data label
next to the knockout in the post where the new
electrical service for the fan motor and heater
elements is entering the cabinet.
STEP 15: RESTORING POWER / TURNING ON THE
UNIT
a. Turn the disconnect switch or breaker switch to
the “ON” position for the compressor and for
the new separate circuit servicing the blower
motor and the heating elements.
b. Test the unit in “COOLING” and “HEATING” to
ensure that full functionality of the unit has
been restored.
c. Run the unit in heating mode with the heating
elements engaged for at least 10 minutes to
ensure the unit does not shut down due to any
temperature limiting device.
STEP 16: Install the cover on the heater electrical
box and reinstall the heat pump access panel(s)
with the screws that were set aside in Step 1.
Caution
Always contact your local distributor if there is
ever any doubt
sPlIT UnITs (Ce/TaXXX-XaV,
Ce/TaXXX-XaH, TaXXX-XaC)
This section is for CE vertical & horizontal split
units and TA horizontal (excluding the TA025) split
units only. See the section below for other split
systems or the section above relating to packaged
units.
Ce-VT / HZ & Ta-HZ (Ta025-HZ
excluded) Units Covered in this section
Within this range of the units, the electric heater kit
and the air handler will share a common electrical
box, therefore a single complete new electrical box
will be provided with the electrical heater kit.
Installation