Page 2 of 8
PTAC Digital Controls
OM 813
Contents
The information in this manual supersedes and replaces previous
catalogues with regards to McQuay Packaged Terminal Air Condi-
tioning products. Illustrations cover the general appearance of McQuay
International products at the time of publication and McQuay Inter-
national reserves the right to make changes in design and construction
at anytime without notice.
“McQuay” is a registered trademark of McQuay International.
©McQuay International 2005. All rights reserved throughout the
world.
C
Product Nomenclature ................................................ 2
Introduction ................................................................. 3
Application .................................................................. 3
Inputs and Outputs ..................................................... 3
User Interface ............................................................. 4
Touch Pad ................................................................... 4
Unit Operation ....................................................... 5-8
Last setting memory back up ............................... 5
On/Off triggering ................................................... 5
Off Mode ............................................................... 5
Temperature 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
Heat Mode .................................................................. 7
1) Hot Start ........................................................... 7
2) Hydronic Heat .................................................. 7
3) Sleep Function ................................................. 7
4) Fan Mode ......................................................... 7
Set Up Mode .......................................................... 7-8
Control Selection ........................................................ 7
Temperature Limit Settings ......................................... 7
Hydronic Valve 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
Temperature limiting .................................................... 8
Outdoor air low ambient lockout .................................. 8
Product Nomenclature
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
P DNS
1
009
E
Z
62
Z
12
AR
14
C
I
C
1
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
Hand Orientation
Z = Not Applicable
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
