Connecting & Auto Sizing For X-13 Applications - Mars Azure Digi-Motor Guide D'installation

Connecting & Auto Sizing For X-13 Applications
NOTICE
This motor must initially be put through a brief programming mode. During this procedure,
the Azure
static pressure of the application. This process programs the motor to a horsepower value appropriate for the
application and establishes proper torque values on each of the speed taps. This is necessary for both PSC and
X-13 applications. The auto sizing process can performed as many times as desired. Each auto sizing event
overrides the previous event.
To prevent electric shock, personal injury, or death, turn off the electric power at the disconnect or
main service panel prior to making any electrical connections.
1) Turn off the system thermostat. Make certain all supply registers,
grilles, and zones are open and unobstructed. Make certain the air
filter is clean. This is very important for accurate auto sizing and best
performance of Azure .
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2) With the power removed from the HVAC system, make the following
connections: Refer to wiring diagram B.
• HVAC system power harness to the Azure
(24V Common, Line, Ground, Neutral/L2)
• BROWN & WHITE (24V & Common) harness to 24V
transformer Note: This is a temporary connection for auto
sizing the motor.
Refer to image 7
3) Close the blower housing door. Carefully apply power to the HVAC
system. The motor will run for approximately 2 minutes and then stop.
IMPORTANT: THE PROCESS IS NOT COMPLETE UNTIL THE
MOTOR COMES TO A COMPLETE STOP. DO NOT REMOVE
POWER UNTIL THE MOTOR STOPS. IF THE MOTOR DOES NOT
STOP, SEE TROUBLESHOOTING.
4) Remove power to the HVAC system.
5) Disconnect the BROWN & WHITE harness.
6) Connect the 24V speed taps to the thermostat where the original X-13
was connected. Select from High, Medium High, Medium, Medium
Low, or Low. See diagram on p.11. Carefully tie off any unused tap.
7) Test complete system operation and confirm proper airflow.
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Digi-Motor will run for approximately 2 minutes while it measures the external
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WARNING!
power harness
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Installation Guide
Digi-Motor
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24V
L1 Ground
Common
Tap 1
Tap 2 Tap 3
Low
Med Low Med
625 RPM
Wiring Diagram B: Azure Harness Connections for
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X-13 Applications
Image 7: Auto Size Harness
Neutral
L2
Tap 4 Tap 5
Med High High
7