McQuay Incremental PDNC Series, Installation & Maintenance Data

Page: 9 / 28

IM 422 / Page 9 of 28
Application
The PTAC Digital Control is used to control a PTAC Unit that
includes both an integral air conditioner and a source of heat.
The Digital Control is operated with a Touch Pad.
Inputs and Outputs
The PTAC Digital Control offers the following inputs:
• Indoor Coil Sensor (ICS)
• Indoor Air Sensor (IAS)
• Outdoor Air Sensor (OAS)
• Inputs from Remote Thermostat, RBGYW
• Heat Fan Lock Out Sensor (HFLO)
• Power Supply, 24VAC
The PTAC Digital Control offers the following outputs:
• Compressor output (COM)
• Outdoor Fan (FAN)
• Indoor Fan (BLOWER HI, BLOWER LO)
• Damper Control (DAMPER)
• Hydronic Valve (HYV)
Specifications
Electrical Rating:
• 24 VAC (18 to 30 VAC)
• 1 amp maximum per terminal
• 4 amp maximum total load
• 60-minute power backup for clock
Temperature Control Ranges:
• 45
o
F to 90
o
F, Accuracy:
±
1
o
F
System Configurations:
• Single stage heat, single stage cool or single stage electric
heat pump
Terminations:
• RC, RH, C, W, Y, O, B, G
PTAC/PDNS Digital Control
Keys and Indicators Labels
ON/OFF, FAN SPEED, FAN MODE,
7 Push Buttons
SLEEP, MODE
Temp buttons: Arrow Labels for
Temp UP and DOWN
9 LED Indicators
SLEEP, COOL, COOL/DRY, FAN,
HEAT, HIGH, LOW, CYCLE, CONT.
LED 2 Digit Displays
Display Function Legend
Tr = Room Temperature rT = Remote Thermostat Control
tP = Touch Pad Control t = Time
Ts = Temperature Setpoint rF = Room Freeze Condition
9- LED
Indicators
Figure 17. Digital Control
Figure 18. Digital Control Indicators
Thermostat Dimensions – 107095701,
107095801, 107095901
LED
2-Digit Display
7- Push Buttons