Field Control Wiring - Daikin PreciseLine Series Installation And Maintenance Manual

NOTE: Design may call for lower than a 10VDC max signal.
4. Unit sizes 030 – 050 are provided with a factory installed
VFD programmed for analog motor speed control.
A 0-10VDC signal applied to terminal FAN 0-10V on
terminal block TB4 allows motor RPM to be adjusted.
VFD settings are programmed at the factory, with motor
information inputted.
Damper Control
1. Damper control can be factory configured for either on-
off or analog control.
2. On-off control requires a 24VAC signal applied to
terminal ACT 24+ to cycle the damper.
3. Analog control requires a 0-10VDC signal applied to
terminal ACT 0-10V to modulate the damper.
Figure 64: Terminal Block Layout (Sizes 006-050)
Figure 65: Terminal Block Layout (Sizes 060-100)
IM 1267-7 • PRECISELINE AIR HANDLER

Field Control Wiring

LOCKOUT/TAGOUT all power sources prior to wiring or servicing the unit.
Electrical shock hazard that may cause severe injury or death. Connect only
low voltage NEC Class II circuits to terminal blocks TB2, TB4, and TB12.
Reinstall and secure all protective front panels when the wiring installation
is complete.
PreciseLine units are available with several control schemes
which may require low voltage field wiring. Use the Unit
Specific Electrical Schematics to determine which control
connections will be required for installation. Check unit specific
electrical documentation in the door of the control panel.
25 shows the possible field connections that can be made.
Table 25: Potential Field Connections and Locations
(Sizes 006-050)
Label Description
T1 Freezestat
T2 Condensate Overflow
T3 Space Humidity Sensor
T4 Compressor 2
T5 Discharge Air Temperature
T6 Airflow Switch
Entering Water Temp /
T7
Leaving Coil Temp
TB12
T8 Duct Static Pressure
Duct Static Pressure
T9
Power
T10 Emergency Stop
Remote Space Sensor
T11
(CE-)
Remote Space Sensor
T12
(CE+)
T1 Supply Fan Signal
T2 Compressor 1 or Valve 1
TB4
T3 Electric Heat or Valve 2
T4 Outside Air Damper
24+ Supply Voltage
TB2
Common Supply Voltage Common
40
Installation
DANGER
Signal
24VAC Contact Closure
Discrete Contact Closure
0-10 VDC Input
24VAC Output
Thermistor Input
24VAC Contact Closure
Thermistor Input
0-10 VDC Input
24 VDC Supply
Discrete Contact Closure
Remote Space Sensor
Communications (CE-)
Remote Space Sensor
Communications (CE+)
0-10 VDC Output
24VAC Output / 0-10 VDC
Output
24VAC Output / 0-10 VDC
Output
0-10 VDC Output
24VAC Output Supply
Ground
www.DaikinApplied.com
Table