Zonex DigiTract 4 Installation Manual page 6

DigiTract 4 Heat Pump 3-Stage Heat / 2- Stage Cool - Wiring and Configura-
tion
Use minimum 18 gauge for all wiring. All wiring must meet stat and local codes.
Do not connect Y2 or W2 for single stage heat/cool systems.
LAT
SENSOR
1
7
Y2
OB
AIRFLOW
BYPASS
DAMPER G
2
W2
Y1
R
C
LAT. Locate the leaving air sensor in the supply air stream, as far from the coil/heat exchanger as possible before the bypass
1
takeoff. Do not locate the LAT downstream of the bypass takeoff.
Connect W2 from the controller to the units electric heat stage terminal designation.
2
Thermostats - Heat Pump thermostats; 1C/2H
3
Note: Some combination thermostats do not have an E terminal. Connect W2 of the thermostat to the E terminal of
STAT 1 terminal block. Only 1 thermostat in system is wired for E operations.
4
Zone Damper Terminals
5
Install one independent 24V AC transformer, sized and fused for the total number of zone dampers (12VA per damper)
6 GE / HP - Configure jumper for Gas/Electric or Heat Pump operation
O/B - Configure reversing value if set up for Heat Pump operation
FF- Fossil Fuel Application
FOAS- Outdoor Air Sensor used to sense Balance Point temperature for auto-changeover, fossil fuel application only. Use
7
FOAS only; not HP outdoor thermostat.
8 Adjustable potentiometers:
BP - To establish outside air temperature that locks out heat pump and energizes fossil fuel furnace (must us FOAS sensor)
HI - To establish HI cutout for furnace protection and staging temperatures
LO - To establish LO cutout, to protect freezing of coil, to set up staging for compressors
TIME - To establish changeover time when opposite calls will be recognized by controller
DT4U - WIRING SCHEMATIC - HEAT PUMP
6
ON
OFF
LV
}
LAT
LV
OAS+
Y1 G W1/OB
OAS-
Y2
W1
OB
G
W2
Y1
R
STAT 1 STAT 2
C
E R Y G C R Y G C
W1 W1
OB OB
3
E R Y G C OB R Y G C
OB
ZONE 1 ZONE 2
THERMOSTAT THERMOSTAT
33 45
FF GE
O/B
8
25 41 40 50
BP LO
HP
Z
ONEX
W2
Y2
DIGITRACT
MODEL: DT4U
STAT 3 STAT 4
R Y G C
W1 W1
R Y G C
OB OB
OB R Y G C
R Y G C
OB
ZONE 3 ZONE 4
THERMOSTAT THERMOSTAT
120-130 15
115 125-145 5 25
HI TIME
ZONE
DAMPERS
DPR 1
1
DPR 2
1
1
DPR 3
2
DPR 4
2
2
4
3
3
3
4
4
4
TR1
TR2
5
24V AC Transformer
to Power Dampers
4