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INSTALLATION INSTRUCTIONS
.
FOR
AUXILIARY ELECTRIC HEATER KITS
A.
Recognizethis symbolas an indicationof ImportantSafety Informationl
IMPORTANT: TO ENSUREPROPBRINSTALLA nON ANDOPBRA TION,PLBASEREADALL INSTRUCTIONSPRIOR TO
ASSBMBLY, INSTALLATION,OPERATION,MAINTENANCB OR REPAIROF nus PRODUCT. AFTERUNPACKING11IB
HEATERKIT, INSPECTALL PARTSFOR DAMAGBPRIORTO INSTALLATION AND STARTUP.
.
INTRODUCfION
The information contained in these instructions has been prepared
to assist in the proper installation and operation of the auxiliary
electric heaters. Improper installation can result in unsatisfactory
opezation or dangerous conditions not covered I>ythe unit wammty
and may invalidate the Underwriters Laboratories recognition.
\
CHECKING
PRODUCT
RECEIVED
Upon receiving the heater kit, inspect it for any shipping damage.
Claims for damage should be tiled immediately with the shipping
company.
IChcclcheater kit model number to determine that it is the correct
series for the unit, as shown on the unit rating plate. and is of the
desired voltage and KW size.
APPLICATION
"'.
These-auxiliary-e1ectrie-resistance
heater kits ar.e desi
insbiIIation in the discharge air compartment of the indoor blower.
Improper usage can cause results which may be dangecous. Do not
use heater kits other than those referenced on the unit rating plate.
Clearance to combustible material for the unit and fIrSt three (3)
feet of duct is "0" inches.
OPERATION
The heater elements are wired through controllers operated by the
24 volt thermostat circuit To insure blower operation, the blower
is also controlled by the heater controllers. The heater controllers
will turn the blower and first stage heater "on" first and will turn
the beater and blower "off" last when the thermostat is satisfied.
TOOLS NEEDED
The following tools can be helpful in installing the kits:
1. Slottedscrewdrivers
and 5/16"
nut driver.
2.
Some kits will require the use of alien wrenches.
3.
Needle-nose pliers.
4.
Wire cutters and strippers.
INDOOR BLOWER SPEED
Refer to the blower airflow tables in the unit installation
instructionsto set the proper blower speed for your airflow and
static pressure requirements.
.
A WARNING
DISCONN~CT ALL POWER
BEFORE
STARTING
REATER KIT INSTAL~ TION. FAILURE TO DO SO CAN
RESULT IN SEVER ELECTRICAL SHOCK OR DEATIL
ELECTRICAL WIRING
Field wiring must comply with the National Electrical Code (CBC
in Canada) and any local ordinances that may apply.
POWER WIRING
e unit has been in operation without an elec::tricheater kit
installed, it may be necessary to change the field installed
power wiring. The added current of the electric heater kit may
require larger gauge wiring than that required for the unit
alone. Refer to the unit rating plate or instaUation instructions
for the required supply circuit sim and overcurrent protection.
A wire sizing table follows for reference
.
2. It is important that proper electrical power is available at the
heater kit terminals. Voltage should Dot vary more than 10%
from that marked on the unit rating plate. Phase voltages must
be balancedwithin3%.
.
3. A properly sized disconnect switch shall be located within
sight of the unit or as required by local codes.
.
4. Power wiring must be run in grounded, rain-tight conduit.
5. Referto the unit installationinstructionsfor power entry
location.The highvoltagefield installedpowersupplycircuit
should be connected to the line side of the tenninal block
located on the heater kit. Consult the heater kit wiring
diagram.
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