IM 1267-7 • PRECISELINE AIR HANDLER 40 www.DaikinApplied.com
Installation
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)
Field Control Wiring
DANGER
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.
Table
25
shows the possible field connections that can be made.
Table 25: Potential Field Connections and Locations
(Sizes 006-050)
Label
Description
Signal
TB12
T1
Freezestat
24VAC Contact Closure
T2
Condensate Overflow
Discrete Contact Closure
T3
Space Humidity Sensor
0-10 VDC Input
T4
Compressor 2
24VAC Output
T5
Discharge Air Temperature Thermistor Input
T6
Airflow Switch
24VAC Contact Closure
T7
Entering Water Temp /
Leaving Coil Temp
Thermistor Input
T8
Duct Static Pressure
0-10 VDC Input
T9
Duct Static Pressure
Power
24 VDC Supply
T10
Emergency Stop
Discrete Contact Closure
T11
Remote Space Sensor
(CE-)
Remote Space Sensor
Communications (CE-)
T12
Remote Space Sensor
(CE+)
Remote Space Sensor
Communications (CE+)
TB4
T1
Supply Fan Signal
0-10 VDC Output
T2
Compressor 1 or Valve 1
24VAC Output / 0-10 VDC
Output
T3
Electric Heat or Valve 2
24VAC Output / 0-10 VDC
Output
T4
Outside Air Damper
0-10 VDC Output
TB2
24+
Supply Voltage
24VAC Output Supply
Common
Supply Voltage Common
Ground
Summary of Contents for PreciseLine Series
Page 121: ......