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Conversion 0f 460 Electrical Power Supply
THIS PRODUCT IS CAPABLE OF USING EITHER 208-
230/3/60 OR 460/3/60 SUPPLY VOLTAGE. THE
AIRHANDLER IS FACTORY SHIPPED FOR USE WITH
208-230/3/60 VOLTAGE. INSTALLATIONS USING
460/3/60 REQUIRE A MODIFICATION TO THE MOTOR
AND TRANSFORMER ELECTRICAL CIRCUIT.
OPERATE THIS APPLIANCE USING A 460V POWER
SUPPLY UNLESS THIS MODIFICATION HAS BEEN
MADE. FAILURE TO OBSERVE THIS WARNING MAY
RESULT IN PERSONAL INJURY, EQUIPMENT
DAMAGE, AND FIRE.
IT IS ADVISABLE TO PERFORM THIS CONVERSION IN
AN AREA THAT WILL PERMIT EASY ACCESSIBILITY.
Transformer. The transformer is a multi rated transformer 208V,
240V, or 480V primary input. To change from the factory setting
of 230 to 460V applications remove the Orange colored wire
attached
to the 240 terminal on the primary side of the transformer.
Install this wire on the transformer terminal marked 480. Similarly,
move the Orange wire from 240 to 208 for 208V applications.
Motor Conversion This conversion requires access to the
motor electrical junction box that is located on the motor
endplate on the side opposite from the shaft. Use the
following diagrams when performing this procedure.
DAR0904 Motor
DAR1204 Motor
DO NOT
Electrical Connections
Supply Voltage
USE COPPER CONDUCTORS ONLY.
A single point supply voltage termination is provided in the
airhandler control box (non-heat kit models) or heat kit control
box (heat kit models). This termination is common to both the
airhandler, and if equipped, heat kit. The wire is to be sized in
accordance with the "Electrical Wire and MOP" section of this
manual.
Air Handler Only (Non-Heat Kit Models)
Supply wire is to be routed through conduit from the service dis-
connect box to the unit. The airhandler is equipped with a knock-
out suitable for ¾" conduit. The following diagram illustrates the
supply voltage hook-up.
Heater Kit Models
When a heater kit is used the system uses a single point wiring
hook-up. The supply wire is to be routed through conduit from
the service disconnect box to the heater kit. The heat kit is
equipped with a knockout suitable for ½" or ¾" conduit depen-
dent on the KW. The supply voltage is to be installed on the ter-
minal block located in the heater kit control box.
7
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