12
LAT AND OAS INSTALLATION
LV
LV
Y2
G
W2
Y1
R
C
OAS-
OAS+
W1
OB
Red
Black
CAPACITY CONTOLLER - LAT INSTALLATION
Capacity control installation, LAT installation
1. Drill a 3/8” hole in the supply air ahead of the bypass tap.
A.
Gas/Electric
application - install sensor as far as possible from the FAU heat
exchanger but still before the bypass tap.
B.
Heat Pump
application - install the sensor after the indoor coil but before
the electric strip heat assembly.
2. Secure the sensor-mounting base to the duct or AHU cabinet (HP) with self
-tapping screws provided.
3. Run the sensor cable back to the controller location; trim off any excess cable.
4. The LAT requires no calibration.
OAS INSTALLATION FOR FOSSIL FUEL
OAS, outdoor air sensor (Optional for Fossil Fuel applications), Sensor installation
1. Install the OAS outside of the building, away from direct sun exposure, and above the snow line.
2. Run the sensor cable to the Digitract controller location; trim off any excess cable.
3. The OAS does not require calibration.
4. Check the Balance Point (BP) POT on the controller. It is factory set at 33°.
120-130
25 41
33
40 50
45
115 125-145
HI
LO
BP
DPR 1
DPR 2
DPR 3
DPR 4
ON
OFF
LV
LV
Y2
G
W2
Y1
R
C
STAT 1
STAT 2
STAT 3
STAT 4
GE
W2
R Y G C
E R Y G C
}
G
W1
Y1
R
C
SENSOR
AIRFLOW
BYPASS
DAMPER
LAT
LAT
OAS-
OAS+
Y1
G
W1/OB
Y2
HP
FF
O/B
W1
OB
R Y G C
R Y G C
Z
ONEX
DIGITRACT
MODEL: DT4U
W1
OB
W1
OB
W1
OB
W1
OB
R W Y1 OB C
Outdoor
Unit
OAS (Outdoor Air Sensor)
Optional
NOTE:
Use of OAS with fossil fuel
creates a more efficient system,
providing greater comfort control.
See page 11 for Fossil Fuel
Operation.
Wiring Diagram for Fossil Fuel Applications
