McQuay OM 813, PTAC 106878501 Maintenance Manual
Operation & Maintenance Data
Digital Control
For Incremental® Top-mounted Hydronic Heat Comfort Conditioners
OM 813
Group: PTAC
Part No: 106878501
Date: August 2005
Contents
Product Nomenclature ................................................ 2
Introduction ................................................................. 3
Application.................................................................. 3
Inputs and Outputs ..................................................... 3
User Interface ............................................................. 4
T ouch Pad................................................................... 4
Unit Operation ....................................................... 5-8
Last setting memory back up ............................... 5
On/Off triggering ................................................... 5
Off Mode............................................................... 5
T emperature Range .............................................. 5
Indoor and Outdoor Fan Operation........................ 5
Damper Control .................................................... 5
Wireless Remote (Optional .................................... .5
Mode Buttons ............................................................. 5
Modes of Operation................................................. .6
Cool Mode .................................................................. 6
Cold Start.................................................................... 6
Sleep Function............................................................ 6
Cool/Dry Mode............................................................ 6
Product Nomenclature
Heat Mode .................................................................. 7
1) Hot St art........................................................... 7
2) Hydronic Heat .................................................. 7
3) Sleep Function ................................................. 7
4) Fan Mode ......................................................... 7
Set Up Mode .......................................................... 7-8
Control Selection ........................................................ 7
T emperature Limit Settings......................................... 7
Hydronic V alve Operation ............................................ 7
Indoor Air Sensor Reading .......................................... 7
Indoor Coil Sensor Reading......................................... 7
Outdoor Air Sensor Reading ....................................... 8
Thermistor failure Code/Condition ............................... 8
Compressor random restart ........................................ 8
Unit Protective Logic................................................ 8
Compressor minimum run time ................................... 8
Compressor minimum off time .................................... 8
Antifreeze protection ................................................... 8
Room freeze protection ............................................... 8
T emperature limiting.................................................... 8
Outdoor air low ambient lockout.................................. 8
PDNS1009 E Z 62 Z 12AR14 C I C 1
Product Category
P = PTAC
Product Identifier
DNS = A/C w/Top-Mnt Hyd Heat
(Flat Top)
DNC = A/C w/Top-Mnt Hyd Heat &
Corrosion Protection (Flat Top)
Design Series
1 = A Design 4 = D Design
2 = B Design 5 = E Design
3 = C Design
Nominal Capacity
007 = 7,000 015 = 15,000
009 = 9,000 016 = 16,000
012 = 12,000
Voltage
A = 115-60-1
C = 206-60-1
J = 265-60-1
S = 208-115-60-1
Coil Options
Heating Options
62 = Hydronic, normally open
63 = Hydronic, normally closed
Product Style
1 = 1st Style Change
SKU Type
A = Stock
B = Quick Ship
C = Tailored
Color
I = Antique Ivory
Power Connection
C = Cord
Return Air
14 = Bottom w/Motorized Damper
34 = Bottom w/Manual Damper
Discharge
AR = Flat Top
Electromechanical Controls Solid State Control
12 = Unit Mount MCO 55 = Unit Mount MCO
13 = Wall T stat 56 = Hand Held Remote Wireless
21 = Unit Mtd. MCO w/Heat 57 = Wall Mounted Remote T'stat
Fan Lockout
26 = Unit Mtd. MCO w/ GRC & NSB
24 = Unit Mtd. MCO w/NSB
Hand Orientation
Z = Not Applicable
C
“McQuay” is a registered trademark of McQuay International.
©McQuay International 2005. All rights reserved throughout the
world.
Page 2 of 8 PTAC Digital Controls OM 813
The information in this manual supersedes and replaces previous
catalogues with regards to McQuay Packaged Terminal Air Conditioning products. Illustrations cover the general appearance of McQuay
International products at the time of publication and McQuay International reserves the right to make changes in design and construction
at anytime without notice.
Introduction
Certified Drawing
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 T ouch Pad.
Figure 1. Digital Control Components
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 V alve (HYV)
Touchpad and Display
(Low Voltage)
Main Control Board
Transformer (24 VAC)
OM 813 PTAC Digital Controls Page 3 of 8
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