Certified Drawing
OM 813 PTAC Digital Controls Page 3 of 8
This Operation and Maintenance Manual includes information
on the controller set up and operation and operating parameters.
It also explains the operation of the built-in equipment
protective logic of the controller.
Application
The PDNS Digital Control is used to control units that include
both an integral air conditioner and a source of heat. The
Digital Control is operated with a Touch Pad.
Inputs and Outputs
The 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 Digital Control offers the following outputs:
• Compressor output (COM)
• Outdoor Fan (FAN)
• Indoor Fan (BLOWER HI, BLOWER LO)
• Damper Control (DAMPER)
• Hydronic Valve (HYV)
Touchpad and Display
(Low Voltage)
Main Control Board
Transformer (24 VAC)
Figure 1. Digital Control Components
Introduction
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