Introduction; Application; Inputs And Outputs - McQuay OM 813 Operation & Maintenance Data

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.
Figure 1. Digital Control Components
Touchpad and Display
(Low Voltage)
Main Control Board
Transformer (24 VAC)
OM 813

Introduction

Certified Drawing

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)
PTAC Digital Controls Page 3 of 8