York Affinity R 410a User Manual

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R-410A  
AFFINITY SERIES  
DEX024-048  
DEY060  
2-5 Ton  
TABLE OF CONTENTS  
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3  
Limitations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3  
Location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4  
Rigging And Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4  
Ductwork . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7  
Roof Curb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7  
Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7  
Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7  
Service Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8  
Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8  
Power And Control Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . 8  
Compressors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11  
Phasing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12  
Airflow Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12  
Blower Speed Selection . . . . . . . . . . . . . . . . . . . . . . . . . . 17  
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18  
Cooling Sequence Of Operations . . . . . . . . . . . . . . . . . . . 18  
Heating Sequence Of Operations. . . . . . . . . . . . . . . . . . . 18  
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20  
Normal Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20  
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20  
Typical Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . 21  
LIST OF TABLES  
1
2
3
4
5
6
7
8
9
Unit Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3  
Unit Accessory Weights . . . . . . . . . . . . . . . . . . . . . . . . . . 5  
Unit Dimensions Front. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5  
Unit Clearances. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5  
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9  
Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10  
Side Duct Application . . . . . . . . . . . . . . . . . . . . . . . . . . . 12  
Bottom Duct Application . . . . . . . . . . . . . . . . . . . . . . . . . 13  
Additional Static Resistance . . . . . . . . . . . . . . . . . . . . . . 14  
12 Electric Heat Multipliers . . . . . . . . . . . . . . . . . . . . . . . . . 15  
13 DEX024 Superheat Charging . . . . . . . . . . . . . . . . . . . . . 16  
14 DEX030 Superheat Charging . . . . . . . . . . . . . . . . . . . . . 16  
15 DEX036 Superheat Charging . . . . . . . . . . . . . . . . . . . . . 16  
16 DEX042 Superheat Charging . . . . . . . . . . . . . . . . . . . . . 16  
17 DEX048 Superheat Charging . . . . . . . . . . . . . . . . . . . . . 17  
18 DEY060 Superheat Charging . . . . . . . . . . . . . . . . . . . . . 17  
19 Delay Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18  
20 Thermostat Signals (Single Phase Units) . . . . . . . . . . . . 19  
21 Thermostat Signals (Three Phase Units) . . . . . . . . . . . . 19  
10 Electric Heat Minimum Supply Air. . . . . . . . . . . . . . . . . . 15  
11 Indoor Blower Specifications. . . . . . . . . . . . . . . . . . . . . . 15  
LIST OF FIGURES  
1
2
3
4
5
6
7
Component Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3  
8
Typical Field Control Wiring Diagram 2 Stage  
Unit 4 Point Load Weight . . . . . . . . . . . . . . . . . . . . . . . . . 4  
Unit Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5  
Dimensions Front and Bottom . . . . . . . . . . . . . . . . . . . . . 6  
Dimensions Back and Bottom . . . . . . . . . . . . . . . . . . . . . 6  
Roof Curb. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7  
Typical Field Control Wiring Diagram Single Stage  
Thermostat. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9  
Typical Field Power Wiring Diagram . . . . . . . . . . . . . . . . 9  
9
10 Control Board Speed Tap Location . . . . . . . . . . . . . . . . 18  
11 R-410A Quick Reference Guide . . . . . . . . . . . . . . . . . . 24  
Thermostat. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8  
DANGER indicates an imminently hazardous situation, which,  
if not avoided, will result in death or serious injury.  
General  
®
YORK Affinity Models DEX and DEY units are factory  
WARNING indicates a potentially hazardous situation, which,  
if not avoided, could result in death or serious injury.  
assembled cooling units designed for outdoor installation on a  
roof top or a slab. Field-installed electric heater accessories are  
available to provide supplemental electric heat combined with  
electric cooling.  
CAUTION indicates a potentially hazardous situation, which, if  
not avoided may result in minor or moderate injury. It is also  
used to alert against unsafe practices and hazards involving  
only property damage.  
The units are completely assembled on rigid, removable base  
rails. All piping, refrigerant charge, and electrical wiring is  
factory installed and tested. The units require only electric  
power and duct connections at the point of installation.  
The electric heaters have nickel-chrome resistance wire  
elements and utilize single point power connection.  
Improper installation may create a condition where the  
operation of the product could cause personal injury or  
property damage. Improper installation, adjustment,  
alteration, service or maintenance can cause injury or  
property damage. Refer to this manual for assistance or  
for additional information, consult a qualified contractor,  
installer or service agency.  
Safety Considerations  
This is a safety alert symbol . When you see this symbol on  
labels or in manuals, be alert to the potential for personal injury.  
Understand and pay particular attention the signal words  
DANGER, WARNING or CAUTION.  
288429-YIM-A-0307  
288429-YIM-A-0307  
Refer to Table 6 for unit physical data and to Table 5 for electrical  
data.  
Installation  
Limitations  
If components are to be added to a unit to meet local codes,  
they are to be installed at the dealer's and/or the customer's  
expense.  
These units must be installed in accordance with the following  
national and local safety codes.  
1. National Electrical Code ANSI/NFPS No. 70 or Canadian  
Electrical Code Part 1, C22.1 (latest editions).  
Size of unit for proposed installation should be based on heat  
loss/heat gain calculations made in accordance with industry  
recognized procedures identified by the Air Conditioning  
Contractors of America.  
2. Local plumbing and waste water codes and other  
applicable local codes.  
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Figure 1: Component Location  
Table 1: Unit Limitations  
Unit Limitations  
Size  
(Tons)  
Model  
Unit Voltage  
Applied Voltage  
Outdoor DB Temp  
Max (°F)  
Min  
Max  
024  
(2.0)  
DEX  
DEX  
208/230-1-60  
208/230-1-60  
187  
252  
115  
115  
030  
(2.5)  
187  
252  
208/230-1-60  
208/230-3-60  
460-3-60  
187  
187  
432  
187  
187  
432  
187  
187  
432  
187  
187  
432  
252  
252  
504  
252  
252  
504  
252  
252  
504  
252  
252  
504  
115  
115  
115  
115  
115  
115  
115  
115  
115  
115  
115  
115  
036  
(3.0)  
DEX  
DEX  
DEX  
DEY  
208/230-1-60  
208/230-3-60  
460-3-60  
042  
(3.5)  
208/230-1-60  
208/230-3-60  
460-3-60  
048  
(4.0)  
208/230-1-60  
208/230-3-60  
460-3-60  
060  
(5.0)  
Unitary Products Group  
3
288429-YIM-A-0307  
Location  
Rigging And Handling  
Use the following guidelines to select a suitable location for  
these units.  
Exercise care when moving the unit. Do not remove any  
packaging until the unit is near the place of installation. Rig the  
unit by attaching chain or cable slings to the lifting holes  
provided in the base rails. Spreader bars, whose length  
exceeds the largest dimension across the unit, MUST be used  
across the top of the unit.  
1. Unit is designed for outdoor installation only.  
2. Condenser must have an unlimited supply of air. Where a  
choice of location is possible, position unit on either north  
or east side of building.  
3. For ground level installation, a level pad or slab should be  
used. The thickness and size of the pad or slab used  
should meet local codes and unit weight. Do not tie the  
slab to the building foundation.  
If a unit is to be installed on a roof curb other than a  
York roof curb, gasketing must be applied to all  
surfaces that come in contact with the unit underside.  
®
4. For roof top installation, be sure the structure can support  
the weight of the unit plus any field installed components.  
Unit must be installed on a level roof curb or appropriate  
angle iron frame providing adequate support under the  
compressor/condenser section.  
5. Maintain level tolerance of unit to 1/8” maximum.  
Before lifting, make sure the unit weight is distributed  
equally on the rigging cables so it will lift evenly.  
Units may be moved or lifted with a forklift. Slotted openings in  
the base rails are provided for this purpose.  
Do not permit overhanging structures or shrubs to  
obstruct condenser air discharge outlet, combustion air  
inlet or vent outlets.  
Clearances  
All panels must be secured in place when the unit is  
lifted.  
All units require certain clearances for proper operation and  
service. Refer to Table 4 for the clearances required for  
construction, servicing and proper unit operation.  
The condenser coils should be protected from rigging  
cable damage with plywood or other suitable material.  
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Figure 2: Unit 4 Point Load Weight  
Weight (lbs.)  
Shipping Operating  
Center of Gravity  
4 Point Load Location (lbs.)  
Size  
(Tons)  
024  
(2.0)  
030  
(2.5)  
036  
(3.0)  
042  
(3.5)  
048  
(4.0)  
060  
Model  
DEX  
DEX  
DEX  
DEX  
DEX  
DEY  
X
Y
A
B
C
D
360  
395  
405  
415  
445  
465  
355  
390  
400  
410  
440  
460  
22.25  
25  
96  
84  
81  
93  
22.25  
22.25  
22.25  
22.25  
22.25  
25  
25  
25  
25  
25  
106  
109  
111  
120  
125  
92  
95  
89  
92  
102  
105  
108  
115  
121  
97  
94  
104  
109  
101  
105  
(5.0)  
4
Unitary Products Group  
288429-YIM-A-0307  
Table 2: Unit Accessory Weights  
Weight (lbs.)  
Unit Accessory  
Model  
Shipping  
Operating  
Add Economizer  
Add Electric Heat1  
All  
All  
45  
13  
40  
12  
1. Weight given is for the maximum heater size available (25 kW).  
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Figure 3: Unit Dimensions  
Table 3: Unit Dimensions Front  
Dimensions  
Unit Size  
“A”  
024, 030, 036  
042, 048, 0601  
33-1/2  
41-1/2  
1. DEY Models  
Table 4: Unit Clearances  
Direction  
Distance  
(in.)  
Distance  
(in.)  
Direction  
Top1  
Front  
Rear  
36  
12  
0
Right  
Left  
Bottom2 3  
24  
24  
0
1. Units must be installed outdoors. Over hanging structure or shrubs should not obscure condenser air  
discharge outlet.  
2. Units may be installed on combustable floors made from wood or class A, B or C roof covering  
materials.  
3. Minimum Clearance of 1inch all sides of supply air duct for the first 3 foot of duct for 20 & 25 kW., zero  
inches there after. For all other heaters, zero inch clearance all sides for entire length of duct.  
Note: For units applied with a roof curb, the minimum clearance may be reduced from 1 inch to 1/2 inch  
between combustible roof curb material and this supply air duct.  
Unitary Products Group  
5
288429-YIM-A-0307  
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Figure 4: Dimensions Front and Bottom  
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Figure 5: Dimensions Back and Bottom  
6
Unitary Products Group  
288429-YIM-A-0307  
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Figure 6: Roof Curb  
Ductwork  
NOTE: Be sure to note supply and return openings.  
Refer to Figures 4 and 5 for information concerning rear and  
bottom supply and return air duct openings.  
These units are adaptable to downflow use as well as rear  
supply and return air duct openings. To convert to downflow,  
use the following steps:  
Roof Curb  
1. Remove the duct covers found in the bottom return and  
supply air duct openings. There are four (4) screws securing  
each duct cover (save these screws to use in Step 2).  
On applications when a roof curb is used, the unit must be  
positioned on the curb so the front of the unit is tight against the  
curb.  
2. Install the duct covers (removed in step one) to the rear  
supply and return air duct openings. Secure with the four  
(4) screws used in step one.  
Filters  
Single phase units are shipped without a filter or filter racks. It is  
the responsibility of the installer to secure a filter in the return air  
ductwork or install a Filter/Frame Kit (1FF0114).  
3. Seal duct covers with silicone caulk.  
Duct work should be designed and sized according to the  
methods of the Air Conditioning Contractors of America  
(ACCA), as set forth in their Manual D.  
A filter rack and high velocity filters are standard on three phase  
units.  
Filters must always be used and must be kept clean. When  
filters become dirt laden, insufficient air will be delivered by the  
blower, decreasing your units efficiency and increasing  
operating costs and wear-and-tear on the unit and controls.  
A closed return duct system shall be used. This shall not  
preclude use of economizers or ventilation air intake. Flexible  
joints may be used in the supply and return duct work to  
minimize the transmission of noise.  
Filters should be checked monthly; this is especially important  
since this unit is used for both heating and cooling.  
Condensate Drain  
A condensate trap is recommended to be installed in the  
condensate drain. The plumbing must conform to local codes.  
When fastening duct work to the side duct flanges on  
the unit, insert the screws through the duct flanges only.  
DO NOT insert the screws through the casing. Outdoor  
duct work must be insulated and waterproofed.  
Use a sealing compound on male pipe threads. Install the  
condensate drain line (3/4” NPTF) to spill into an open drain.  
1. 8” Roof Curb also available.  
Unitary Products Group  
7
288429-YIM-A-0307  
Service Access  
Thermostat  
Access to all serviceable components is provided at the  
following locations:  
The room thermostat should be located on an inside wall  
approximately 56" above the floor where it will not be subject to  
drafts, sun exposure or heat from electrical fixtures or  
appliances. Follow manufacturer's instructions enclosed with  
the thermostat for general installation procedure. Six color  
coded insulated wires (minimum #18 AWG) should be used to  
connect thermostat to unit. See Figures 7 and 8.  
• Blower compartment access panel  
• Electrical/Filter access panel  
• Compressor access panel  
• Refrigerant connections  
Refer to Figures 1 and 3 for location of these access locations  
and minimum clearances in Table 4.  
Power And Control Wiring  
Field wiring to the unit must conform to provisions of the current  
N.E.C. ANSI/NFPA No. 70 or C.E.C. and/or local ordinances.  
The unit must be electrically grounded in accordance with local  
codes or, in their absence, with the N.E.C./C.E.C. Voltage  
tolerances which must be maintained at the compressor  
terminals during starting and running conditions are indicated  
on the unit Rating Plate and Table 5.  
This system uses R-410A Refrigerant which operates at  
higher pressures than R-22. No other refrigerant may be  
used in this system. Gage sets, hoses, refrigerant  
containers and recovery systems must be designed to  
handle R-410A. If you are unsure, consult the  
equipment manufacturer. Failure to use R-410A  
compatible servicing equipment may result in property  
damage or injury.  
The wiring entering the cabinet must be provided with  
mechanical strain relief.  
A fused disconnect switch should be field provided for the unit.  
If any of the wire supplied with the unit must be replaced,  
replacement wire must be of the type shown on the wiring  
diagram.  
Electrical line must be sized properly to carry the load. Each  
unit must be wired with a separate branch circuit fed directly  
from the meter panel and properly fused.  
Wear safety glasses and gloves when handling  
refrigerants. Failure to follow this warning can cause  
serious personal injury.  
Refer to Figures 7, 8 and 9 for typical field wiring and to the  
appropriate unit wiring diagram for control circuit and power  
wiring information.  
Refer to Figure 11 for the R-410A quick reference guide.  
NOTE: HEAT ANTICIPATOR  
SHOULD BE SET AT 0.35  
AMPS FOR ALL MODELS.  
SINGLE STAGE  
THERMOSTAT  
UNIT CONTROL BOARD  
TERMINAL STRIP  
**  
R
** = Minimum wire size of 18 AWG  
wire should be used for all field  
installed 24 volt wire.  
R
G
Y
JUMPER NEEDED FOR FULL SPEED  
COMPRESSOR OPERATION  
G
Y1  
24 VOLT  
TRANSFORMER  
Y/Y2  
W
C
W
W
C
2
1
PROGRAMMABLE  
THERMOSTAT ONLY  
Figure 7: Typical Field Control Wiring Diagram Single Stage Thermostat  
8
Unitary Products Group  
288429-YIM-A-0307  
NOTE: HEAT ANTICIPATOR  
SHOULD BE SET AT 0.35  
AMPS FOR ALL MODELS.  
2 STAGE  
THERMOSTAT  
UNIT CONTROL BOARD  
TERMINAL STRIP  
** = Minimum wire size of 18 AWG  
wire should be used for all field  
installed 24 volt wire.  
**  
R
G
R
G
Y
1
2
Y
1
24 VOLT  
TRANSFORMER  
Y
Y/Y2  
W
C
W
W
C
2
1
PROGRAMMABLE  
THERMOSTAT ONLY  
Figure 8: Typical Field Control Wiring Diagram 2 Stage Thermostat  
Figure 9: Typical Field Power Wiring Diagram  
Table 5: Electrical Data  
2
OD Fan Supply  
Compressors  
Max Fuse /  
Breaker  
1
3
Motors  
(each)  
Blower  
Motor  
Electric Heat Option  
Size  
(Tons)  
MCA  
(each)  
Model  
Volt  
(Amps)  
Size  
(Amps)  
RLA LRA MCC  
FLA  
FLA  
Model  
kW  
Stages Amps  
None  
-
-
-
18.3  
25  
45/45  
60/60  
70/80  
30  
2NH04500506 3.8/5  
2NH04500706 5.6/7.5  
2NH04501006 7.5/10  
1
2
2
-
18.1/20.8  
27.1/31.3  
36.1/41.7  
-
40.8/44.3  
52.1/57.3  
63.4/70.3  
23.1  
024  
(2.0)  
DEX  
208/230-1-60 10.2  
208/230-1-60 14.1  
52  
70  
16  
1.2  
4.3  
None  
-
2NH04500506 3.8/5  
2NH04500706 5.6/7.5  
2NH04501006 7.5/10  
2NH04501506 11.3/15  
1
2
2
2
-
18.1/20.8  
27.1/31.3  
36.1/41.7  
45.7/49.2  
57/62.2  
68.3/75.2  
50/50  
60/70  
70/80  
100/110  
35  
030  
(2.5)  
DEX  
22  
1.2  
1.2  
4.3  
4.3  
54.2/62.5 90.8/101.3  
None  
-
-
26.3  
48.8/52.3  
60.1/65.3  
71.4/78.3  
94/104.4  
19.4  
2NH04500506 3.8/5  
2NH04500706 5.6/7.5  
2NH04501006 7.5/10  
2NH04501506 11.3/15  
1
2
2
2
-
18.1/20.8  
27.1/31.3  
36.1/41.7  
54.2/62.5  
-
60/60  
70/70  
80/80  
100/110  
25  
208/230-1-60 16.6  
208/230-3-60 11.1  
82  
26  
036  
(3.0)  
DEX  
None  
-
58  
29  
17  
7
1.2  
0.8  
4.3  
4.3  
2NH04501025 7.5/10  
2NH04501525 11.3/15  
1
1
-
20.8/24.1  
31.3/36.1  
-
45.4/49.4  
58.5/64.5  
10.7  
50/50  
60/70  
15  
None  
-
460-3-60  
4.5  
2NH04501046  
2NH04501546  
10  
15  
1
1
12  
25.7  
30  
18  
33.2  
35  
Unitary Products Group  
9
288429-YIM-A-0307  
Table 5: Electrical Data (Continued)  
2
OD Fan Supply  
Max Fuse /  
Breaker  
Compressors  
1
3
Motors  
(each)  
Blower  
Motor  
Electric Heat Option  
Size  
(Tons)  
MCA  
(each)  
Model  
Volt  
(Amps)  
Size  
(Amps)  
RLA LRA MCC  
FLA  
FLA  
Model  
kW  
Stages Amps  
None  
-
-
-
29  
35  
60/60  
70/70  
80/90  
100/110  
30  
2NH04500506 3.8/5  
2NH04500706 5.6/7.5  
2NP04501006 7.5/10  
2NP04501506 11.3/15  
1
2
2
2
-
18.1/20.8  
27.1/31.3  
36.1/41.7  
51.5/55  
62.8/68  
74.1/81  
208/230-1-60 16.6  
208/230-3-60 13.4  
96  
26  
1.4  
6.8  
54.2/62.5 96.7/107.1  
042  
(3.5)  
DEX  
None  
-
-
25  
51/55  
64/70.1  
15.2  
88  
44  
21  
10  
1.4  
0.8  
6.8  
6.8  
2NP04501025 7.5/10  
2NP04501525 11.3/15  
1
1
-
20.8/24.1  
60/60  
70/80  
20  
31.3/36.1  
None  
-
-
460-3-60  
6.1  
2NP04501046  
2NP04501546  
None  
10  
15  
-
1
1
-
12  
30.3  
35  
18  
37.8  
40  
-
34.9  
45  
2NP04501025 7.5/10  
2NP04501525 11.3/15  
2NP04502025 15/20  
2NP04502525 18.8/25  
2
2
2
2
-
36.1/41.7  
80/87  
90/90  
110/125  
150/150  
150/175  
35  
208/230-1-60 21.1  
208/230-3-60 13.4  
96  
88  
41  
33  
21  
10  
40  
28  
14  
1.7  
1.7  
1.0  
1.7  
1.7  
1.0  
6.8  
6.8  
6.8  
9.1  
9.1  
9.1  
54.2/62.5 102.6/113  
72.2/83.3 125.2/139  
90.3/104.2 147.7/165.1  
None  
-
-
25.3  
2NP04501025 7.5/10  
2NP04501525 11.3/15  
2NP04502025 15/20  
2NP04502525 18.8/25  
1
1
2
2
-
20.8/24.1  
31.3/36.1  
41.7/48.1  
51.3/55.3  
64.3/70.4  
77.4/85.4  
60/60  
70/80  
80/90  
100/110  
20  
048  
(4.0)  
DEX  
52.1/60.1 90.4/100.4  
None  
-
-
12  
15.8  
30.8  
2NP04501046  
2NP04501546  
2NH04502046  
2NH04502546  
None  
10  
15  
20  
25  
-
1
1
2
2
-
35  
460-3-60  
6.4  
18  
38.4  
40  
24.1  
30.1  
-
45.9  
50  
53.4  
60  
42.8  
60  
2NH04501025 7.5/10  
2NH04501525 11.3/15  
2NH04502025 15/20  
2NH04502525 18.8/25  
2
2
2
2
-
36.1/41.7  
87.9/94.9  
100/110  
125/125  
150/150  
175/175  
40  
208/230-1-60 25.6 118  
208/230-3-60 17.6 123  
54.2/62.5 110.5/120.9  
72.2/83.3 133.1/147  
90.3/104.2 155.6/173  
None  
-
-
32.8  
58.9/62.9  
71.9/77.9  
84.9/92.9  
98/108  
21.4  
2NH04501025 7.5/10  
2NH04501525 11.3/15  
2NH04502025 15/20  
2NH04502525 18.8/25  
1
1
2
2
-
20.8/24.1  
31.3/36.1  
41.7/48.1  
52.1/60.1  
-
70/70  
80/80  
90/100  
100/110  
30  
060  
(5.0)  
DEY  
None  
-
2NP04501046  
2NH04501546  
2NH04502046  
2NP04502546  
10  
15  
20  
25  
1
1
2
2
12  
36.4  
40  
460-3-60  
9.0  
62  
18  
43.9  
45  
24.1  
51.4  
60  
30.1  
58.9  
60  
1. Minimum Circuit Ampacity.  
2. Maximum Over Current Protection per standard UL 1995.  
3. Fuse or HACR circuit breaker size installed at factory or field installed.  
Table 6: Physical Data  
Models  
Component  
DEX024  
2.0  
DEX030  
2.5  
DEX036  
3.0  
DEX042  
3.5  
DEX048  
4.0  
DEY060  
5.0  
Nominal Tonnage  
ARI COOLING PERFORMANCE  
Gross Capacity @ ARI A point (Btu)  
ARI net capacity (Btu)  
EER  
23.5  
23.2  
12.3  
15  
29.2  
28.6  
12.3  
15  
36.8  
36.0  
12.3  
15  
44.5  
43.5  
12.3  
15  
50.8  
49.0  
12.3  
15  
60.4  
58.5  
11.6  
SEER  
14.5  
Nominal CFM  
800  
1000  
2.3  
1150  
2.9  
1400  
3.5  
1600  
4.0  
1750  
5.0  
System power (KW)  
Refrigerant type  
1.9  
R-410a  
5-0  
R-410a  
8-0  
R-410a  
8-0  
R-410a  
7-8  
R-410a  
10-0  
R-410a  
10-8  
Refrigerant charge (lb-oz)  
10  
Unitary Products Group  
288429-YIM-A-0307  
Table 6: Physical Data (Continued)  
Models  
DEX036  
Component  
DEX024  
DEX030  
2.5  
DEX042  
3.5  
DEX048  
4.0  
DEY060  
5.0  
Nominal Tonnage  
2.0  
3.0  
DIMENSIONS (inches)  
Length  
49 1/8  
47 1/4  
33 1/2  
355  
49 1/8  
47 1/4  
33 1/2  
390  
49 1/8  
47 1/4  
33 1/2  
400  
49 1/8  
47 1/4  
41 1/2  
410  
49 1/8  
47 1/4  
41 1/2  
440  
49 1/8  
47 1/4  
41 1/2  
460  
Width  
Height  
OPERATING WT. (lbs.)  
COMPRESSORS  
Type  
Scroll 2-spd Scroll 2-spd Scroll 2-spd Scroll 2-spd Scroll 2-spd Scroll 2-spd  
Quantity  
1
1
1
1
1
1
CONDENSER COIL DATA  
Face area (Sq. Ft.)  
Rows  
11.7  
11.7  
11.7  
16.4  
16.4  
16.4  
1
20  
2
20  
2
20  
1
20  
2
20  
2
20  
Fins per inch  
Tube diameter (in.)  
Circuitry Type  
EVAPORATOR COIL DATA  
Face area (Sq. Ft.)  
Rows  
3/8  
3/8  
3/8  
3/8  
3/8  
3/8  
Interlaced  
Interlaced  
Interlaced  
Interlaced  
Interlaced  
Interlaced  
4.38  
2
4.38  
2
4.38  
3
5.63  
3
5.63  
3
5.63  
3
Fins per inch  
15  
15  
15  
16  
16  
16  
Tube diameter  
Circuitry Type  
Refrigerant control  
CONDENSER FAN DATA  
Fan diameter (Inch)  
Type  
3/8  
3/8  
3/8  
3/8  
3/8  
3/8  
Interlaced  
TX Valve  
Interlaced  
TX Valve  
Interlaced  
TX Valve  
Interlaced  
TX Valve  
Interlaced  
TX Valve  
Interlaced  
TX Valve  
22  
Prop.  
Direct  
1
22  
Prop.  
Direct  
1
22  
Prop.  
Direct  
1
22  
Prop.  
Direct  
1
22  
Prop.  
Direct  
1
22  
Prop.  
Direct  
1
Drive type  
No. speeds  
Number of motors  
Motor HP each  
RPM  
1
1
1
1
1
1
1/4  
1/4  
1/4  
1/4  
1/3  
1/3  
850  
1800  
850  
1800  
850  
2400  
1100  
3000  
1100  
3000  
1100  
3000  
Nominal total CFM  
DIRECT DRIVE EVAP FAN DATA  
Quantity  
1
10 x 8  
Centrifugal  
2
1
10 x 8  
Centrifugal  
2
1
10 x 8  
Centrifugal  
2
1
11 x 10  
Centrifugal  
2
1
11 x 10  
Centrifugal  
2
1
Fan Size (Inch)  
Type  
11 x 10  
Centrifugal  
No. speeds  
2
1
Motor HP each  
RPM  
1/2  
1/2  
1/2  
3/4  
3/4  
Variable  
48  
Variable  
48  
Variable  
48  
Variable  
48  
Variable  
48  
Variable  
48  
Frame size  
FILTERS  
Quantity - Size  
2 - 22 x 14 x 1 2 - 22 x 14 x 1 2 - 22 x 14 x 1 2 - 22 x 14 x 1 2 - 22 x 14 x 1 2 - 22 x 14 x 1  
Compressors  
The scroll compressor used in this product is specifically designed  
to operate with R-410A Refrigerant and cannot be interchanged.  
Do not leave the system open to the atmosphere. Unit  
damage could occur due to moisture being absorbed by  
the POE oil in the system. This type of oil is highly  
susceptible to moisture absorption  
This system uses R-410A Refrigerant which operates at  
higher pressures than R-22. No other refrigerant may be  
used in this system.  
POE (polyolester) compressor lubricants are known to cause  
long term damage to some synthetic roofing materials.  
The compressor also uses a polyolester (POE oil), Mobil 3MA  
POE. This oil is extremely hydroscopic, meaning it absorbs water  
readily. POE oil can absorb 15 times as much water as other oils  
designed for HCFC and CFC refrigerants. Take all necessary  
precautions to avoid exposure of the oil to the atmosphere.  
Exposure, even if immediately cleaned up, may cause  
embrittlement (leading to cracking) to occur in one year  
or more. When performing any service that may risk  
exposure of compressor oil to the roof, take precautions  
to protect roofing.  
Unitary Products Group  
11  
288429-YIM-A-0307  
Procedures which risk oil leakage include, but are not limited to,  
compressor replacement, repairing refrigerant leaks, replacing  
refrigerant components such as filter drier, pressure switch,  
metering device or coil.  
Phasing  
Three-phase, scroll compressors operate in only one direction.  
If the scroll is drawing low amperage, has similar suction and  
discharge pressures, or is producing a high noise level, the  
scroll is misphased. Change the incoming line connection  
phasing to obtain the proper rotation.  
Units are shipped with compressor mountings which are factory  
adjusted and ready for operation.  
Scroll compressors require proper rotation to operate  
properly. Failure to check and correct rotation may result  
in property damage.  
Do not loosen compressor mounting bolts.  
Airflow Performance  
Table 7: Side Duct Application  
External Static Pressure (Inch Water Gauge)  
Size  
(Tons)  
Thermostat  
Input  
Speed  
Tap  
Model  
Mode  
CFM  
0.2  
0.3  
0.4  
0.5  
0.6  
0.7  
0.8  
0.9  
1.0  
Watts Watts Watts Watts Watts Watts Watts Watts Watts  
Y1  
Y1  
Y1  
COOL-A  
COOL-B  
COOL-C  
COOL-D  
COOL-A  
COOL-B  
COOL-C  
COOL-D  
HEAT-A  
HEAT-B  
HEAT-C  
HEAT-D  
COOL-A  
COOL-B  
COOL-C  
COOL-D  
COOL-A  
COOL-B  
COOL-C  
COOL-D  
HEAT-A  
HEAT-B  
HEAT-C  
HEAT-D  
COOL-A  
COOL-B  
COOL-C  
COOL-D  
COOL-A  
COOL-B  
COOL-C  
COOL-D  
HEAT-A  
HEAT-B  
HEAT-C  
HEAT-D  
COOL-A  
COOL-B  
COOL-C  
COOL-D  
COOL-A  
COOL-B  
COOL-C  
COOL-D  
HEAT-A  
HEAT-B  
HEAT-C  
HEAT-D  
600  
450  
525  
675  
800  
600  
700  
900  
800  
720  
880  
800  
670  
620  
720  
770  
1000  
925  
1075  
1150  
1000  
900  
1100  
1000  
900  
750  
830  
980  
1200  
1000  
1100  
1300  
1200  
1080  
1275  
1200  
920  
57  
39  
47  
71  
99  
57  
76  
126  
99  
80  
120  
99  
61  
54  
70  
74  
54  
63  
88  
117  
74  
91  
69  
79  
108  
84  
95  
126  
100  
112  
142  
176  
126  
148  
208  
-
143  
117  
129  
161  
196  
143  
167  
231  
-
161  
134  
146  
179  
217  
161  
186  
253  
-
179  
152  
164  
198  
237  
179  
205  
277  
-
197  
171  
182  
216  
258  
197  
224  
300  
-
Low  
Y1  
106  
137  
91  
112  
166  
137  
116  
160  
137  
95  
124  
156  
108  
130  
187  
156  
135  
180  
156  
113  
104  
124  
136  
222  
190  
260  
302  
222  
180  
274  
222  
180  
131  
155  
213  
333  
222  
274  
401  
333  
263  
383  
333  
224  
176  
198  
249  
468  
354  
409  
532  
367  
304  
438  
367  
Cool  
Heat  
Cool  
Heat  
Cool  
Heat  
Cool  
Heat  
Y1+Y2  
Y1+Y2  
Y1+Y2  
Y1+Y2  
W1  
W1  
W1  
W1  
Y1  
Y1  
Y1  
Y1  
Y1+Y2  
Y1+Y2  
Y1+Y2  
Y1+Y2  
W1  
W1  
W1  
W1  
Y1  
Y1  
Y1  
Y1  
Y1+Y2  
Y1+Y2  
Y1+Y2  
Y1+Y2  
W1  
W1  
W1  
W1  
Y1  
024  
(2.0)  
DEX  
High  
94  
146  
117  
98  
140  
117  
78  
70  
88  
99  
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
130  
121  
142  
155  
246  
211  
285  
330  
-
148  
138  
160  
174  
270  
233  
312  
360  
-
166  
156  
178  
193  
296  
256  
341  
392  
-
184  
173  
197  
213  
323  
280  
371  
427  
-
201  
191  
215  
232  
350  
304  
403  
463  
-
87  
Low  
106  
118  
200  
169  
236  
277  
200  
159  
249  
200  
159  
113  
135  
191  
306  
200  
249  
372  
306  
239  
355  
306  
195  
149  
170  
218  
426  
318  
370  
486  
330  
270  
397  
330  
81  
159  
129  
194  
233  
159  
120  
206  
159  
120  
76  
179  
148  
214  
254  
179  
139  
227  
179  
139  
94  
116  
170  
283  
179  
227  
346  
283  
217  
330  
283  
166  
124  
143  
188  
383  
281  
330  
439  
293  
237  
356  
293  
030  
(2.5)  
DEX  
DEX  
DEX  
High  
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
201  
150  
174  
236  
362  
246  
300  
434  
-
222  
168  
194  
260  
394  
270  
328  
471  
-
244  
187  
215  
285  
429  
296  
357  
511  
-
267  
206  
236  
311  
467  
323  
389  
556  
-
291  
225  
256  
337  
507  
350  
422  
604  
-
Low  
97  
150  
261  
159  
206  
325  
261  
196  
308  
261  
139  
100  
117  
159  
338  
245  
290  
391  
256  
203  
314  
256  
036  
(3.0)  
High  
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
255  
205  
227  
281  
509  
390  
447  
576  
-
286  
235  
257  
313  
549  
426  
485  
618  
-
319  
266  
289  
346  
589  
462  
523  
660  
-
352  
299  
322  
379  
627  
497  
560  
700  
-
386  
333  
356  
414  
664  
533  
596  
739  
-
Y1  
Y1  
Y1  
Y1+Y2  
Y1+Y2  
Y1+Y2  
Y1+Y2  
W1  
790  
850  
980  
Low  
1400  
1200  
1300  
1500  
1225  
1100  
1350  
1225  
042  
(3.5)  
High  
W1  
W1  
W1  
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
12  
Unitary Products Group  
288429-YIM-A-0307  
Table 7: Side Duct Application (Continued)  
External Static Pressure (Inch Water Gauge)  
0.3 0.4 0.5 0.6 0.7 0.8 0.9  
Watts Watts Watts Watts Watts Watts Watts Watts Watts  
Size  
(Tons)  
Thermostat  
Input  
Speed  
Tap  
Model  
Mode  
CFM  
0.2  
1.0  
Y1  
Y1  
Y1  
COOL-A  
COOL-B  
COOL-C  
COOL-D  
COOL-A  
COOL-B  
COOL-C  
COOL-D  
HEAT-A  
HEAT-B  
HEAT-C  
HEAT-D  
COOL-A  
COOL-B  
COOL-C  
COOL-D  
COOL-A  
COOL-B  
COOL-C  
COOL-D  
HEAT-A  
HEAT-B  
HEAT-C  
HEAT-D  
1050  
920  
980  
184  
139  
159  
211  
448  
338  
391  
508  
448  
359  
546  
448  
235  
205  
255  
286  
559  
498  
590  
654  
654  
703  
823  
767  
216  
166  
188  
245  
500  
383  
439  
565  
500  
405  
606  
500  
283  
258  
301  
329  
608  
542  
643  
715  
715  
772  
913  
847  
248  
195  
218  
279  
551  
426  
486  
620  
551  
449  
663  
551  
328  
304  
344  
371  
658  
588  
696  
775  
775  
839  
999  
923  
280  
224  
249  
313  
600  
468  
532  
672  
600  
493  
718  
600  
368  
345  
384  
410  
710  
634  
750  
836  
836  
904  
313  
255  
281  
348  
647  
509  
576  
723  
647  
535  
771  
647  
404  
381  
420  
448  
762  
683  
805  
895  
895  
968  
346  
286  
313  
382  
693  
549  
618  
772  
-
380  
319  
346  
417  
736  
589  
660  
818  
-
414  
352  
379  
452  
779  
627  
700  
863  
-
449  
386  
414  
486  
819  
664  
739  
905  
-
Low  
Y1  
1120  
1600  
1400  
1500  
1700  
1600  
1440  
1760  
1600  
1170  
1110  
1210  
1270  
1750  
1650  
1800  
1900  
1900  
1975  
2150  
2070  
Cool  
Heat  
Cool  
Heat  
Y1+Y2  
Y1+Y2  
Y1+Y2  
Y1+Y2  
W1  
W1  
W1  
W1  
Y1  
Y1  
Y1  
Y1  
Y1+Y2  
Y1+Y2  
Y1+Y2  
Y1+Y2  
W1  
048  
(4.0)  
DEX  
High  
-
-
-
-
-
-
-
-
-
-
-
-
435  
410  
454  
483  
815  
732  
860  
955  
-
463  
434  
483  
516  
870  
783  
916  
485  
451  
509  
547  
925  
835  
973  
505  
465  
533  
576  
981  
888  
1030  
-
-
-
-
-
Low  
060  
(5.0)  
DEY  
High  
1013 1072  
-
-
-
-
-
-
-
-
W1  
W1  
W1  
-
-
-
1079 1154  
997 1066  
Table 8: Bottom Duct Application  
External Static Pressure (Inch Water Gauge)  
0.3 0.4 0.5 0.6 0.7 0.8 0.9  
Watts Watts Watts Watts Watts Watts Watts Watts Watts  
Size  
(Tons)  
Thermostat  
Speed  
Tap  
Model  
Mode  
CFM  
0.2  
1.0  
Input  
Y1  
Y1  
Y1  
COOL-A  
COOL-B  
COOL-C  
COOL-D  
COOL-A  
COOL-B  
COOL-C  
COOL-D  
HEAT-A  
HEAT-B  
HEAT-C  
HEAT-D  
COOL-A  
COOL-B  
COOL-C  
COOL-D  
COOL-A  
COOL-B  
COOL-C  
COOL-D  
HEAT-A  
HEAT-B  
HEAT-C  
HEAT-D  
COOL-A  
COOL-B  
COOL-C  
COOL-D  
COOL-A  
COOL-B  
COOL-C  
COOL-D  
HEAT-A  
HEAT-B  
HEAT-C  
HEAT-D  
600  
450  
525  
675  
800  
600  
700  
900  
800  
720  
880  
800  
670  
620  
720  
770  
1000  
925  
1075  
1150  
1000  
900  
1100  
1000  
900  
750  
830  
980  
1200  
1000  
1100  
1300  
1200  
1080  
1275  
1200  
57  
39  
47  
71  
99  
57  
76  
126  
99  
80  
120  
99  
61  
54  
70  
74  
54  
63  
88  
117  
74  
91  
69  
79  
108  
84  
95  
126  
100  
112  
142  
176  
126  
148  
208  
-
143  
117  
129  
161  
196  
143  
167  
231  
-
161  
134  
146  
179  
217  
161  
186  
253  
-
179  
152  
164  
198  
237  
179  
205  
277  
-
197  
171  
182  
216  
258  
197  
224  
300  
-
Low  
Y1  
106  
137  
91  
112  
166  
137  
116  
160  
137  
95  
124  
156  
108  
130  
187  
156  
135  
180  
156  
113  
104  
124  
136  
222  
190  
260  
302  
222  
180  
274  
222  
180  
131  
155  
213  
333  
222  
274  
401  
333  
263  
383  
333  
Cool  
Heat  
Cool  
Heat  
Cool  
Heat  
Y1+Y2  
Y1+Y2  
Y1+Y2  
Y1+Y2  
W1  
W1  
W1  
W1  
Y1  
Y1  
Y1  
Y1  
Y1+Y2  
Y1+Y2  
Y1+Y2  
Y1+Y2  
W1  
W1  
W1  
W1  
Y1  
Y1  
Y1  
Y1  
Y1+Y2  
Y1+Y2  
Y1+Y2  
Y1+Y2  
W1  
W1  
W1  
W1  
024  
(2.0)  
DEX  
High  
94  
146  
117  
98  
140  
117  
78  
70  
88  
99  
179  
148  
214  
254  
179  
139  
227  
179  
139  
94  
116  
170  
283  
179  
227  
346  
283  
217  
330  
283  
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
130  
121  
142  
155  
246  
211  
285  
330  
-
148  
138  
160  
174  
270  
233  
312  
360  
-
166  
156  
178  
193  
296  
256  
341  
392  
-
184  
173  
197  
213  
323  
280  
371  
427  
-
201  
191  
215  
232  
350  
304  
403  
463  
-
87  
Low  
106  
118  
200  
169  
236  
277  
200  
159  
249  
200  
159  
113  
135  
191  
306  
200  
249  
372  
306  
239  
355  
306  
81  
159  
129  
194  
233  
159  
120  
206  
159  
120  
76  
030  
(2.5)  
DEX  
High  
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
201  
150  
174  
236  
362  
246  
300  
434  
-
222  
168  
194  
260  
394  
270  
328  
471  
-
244  
187  
215  
285  
429  
296  
357  
511  
-
267  
206  
236  
311  
467  
323  
389  
556  
-
291  
225  
256  
337  
507  
350  
422  
604  
-
Low  
97  
150  
261  
159  
206  
325  
261  
196  
308  
261  
036  
(3.0)  
DEX  
High  
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Unitary Products Group  
13  
288429-YIM-A-0307  
Table 8: Bottom Duct Application (Continued)  
External Static Pressure (Inch Water Gauge)  
0.3 0.4 0.5 0.6 0.7 0.8 0.9  
Watts Watts Watts Watts Watts Watts Watts Watts Watts  
Size  
(Tons)  
Thermostat  
Input  
Speed  
Tap  
Model  
Mode  
CFM  
0.2  
1.0  
Y1  
Y1  
Y1  
COOL-A  
COOL-B  
COOL-C  
COOL-D  
COOL-A  
COOL-B  
COOL-C  
COOL-D  
HEAT-A  
HEAT-B  
HEAT-C  
HEAT-D  
COOL-A  
COOL-B  
COOL-C  
COOL-D  
COOL-A  
COOL-B  
COOL-C  
COOL-D  
HEAT-A  
HEAT-B  
HEAT-C  
HEAT-D  
COOL-A  
COOL-B  
COOL-C  
COOL-D  
COOL-A  
COOL-B  
COOL-C  
COOL-D  
HEAT-A  
HEAT-B  
HEAT-C  
HEAT-D  
920  
790  
850  
139  
100  
117  
159  
338  
245  
290  
391  
256  
203  
314  
256  
184  
139  
159  
211  
448  
338  
391  
508  
448  
359  
546  
448  
235  
205  
255  
286  
559  
498  
590  
654  
654  
703  
823  
767  
166  
124  
143  
188  
383  
281  
330  
439  
293  
237  
356  
293  
216  
166  
188  
245  
500  
383  
439  
565  
500  
405  
606  
500  
283  
258  
301  
329  
608  
542  
643  
715  
715  
772  
913  
847  
195  
149  
170  
218  
426  
318  
370  
486  
330  
270  
397  
330  
248  
195  
218  
279  
551  
426  
486  
620  
551  
449  
663  
551  
328  
304  
344  
371  
658  
588  
696  
775  
775  
839  
999  
923  
224  
176  
198  
249  
468  
354  
409  
532  
367  
304  
438  
367  
280  
224  
249  
313  
600  
468  
532  
672  
600  
493  
718  
600  
368  
345  
384  
410  
710  
634  
750  
836  
836  
904  
255  
205  
227  
281  
509  
390  
447  
576  
-
286  
235  
257  
313  
549  
426  
485  
618  
-
319  
266  
289  
346  
589  
462  
523  
660  
-
352  
299  
322  
379  
627  
497  
560  
700  
-
386  
333  
356  
414  
664  
533  
596  
739  
-
Low  
Y1  
980  
Cool  
Heat  
Cool  
Heat  
Cool  
Heat  
Y1+Y2  
Y1+Y2  
Y1+Y2  
Y1+Y2  
W1  
W1  
W1  
W1  
Y1  
Y1  
Y1  
Y1  
Y1+Y2  
Y1+Y2  
Y1+Y2  
Y1+Y2  
W1  
W1  
W1  
W1  
Y1  
Y1  
Y1  
Y1  
Y1+Y2  
Y1+Y2  
Y1+Y2  
Y1+Y2  
W1  
W1  
W1  
W1  
1400  
1200  
1300  
1500  
1225  
1100  
1350  
1225  
1050  
920  
042  
(3.5)  
DEX  
High  
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
313  
255  
281  
348  
647  
509  
576  
723  
647  
535  
771  
647  
404  
381  
420  
448  
762  
683  
805  
895  
895  
968  
346  
286  
313  
382  
693  
549  
618  
772  
-
380  
319  
346  
417  
736  
589  
660  
818  
-
414  
352  
379  
452  
779  
627  
700  
863  
-
449  
386  
414  
486  
819  
664  
739  
905  
-
Low  
980  
1120  
1600  
1400  
1500  
1700  
1600  
1440  
1760  
1600  
1170  
1110  
1210  
1270  
1750  
1650  
1800  
1900  
1900  
1975  
2150  
2070  
048  
(4.0)  
DEX  
High  
-
-
-
-
-
-
-
-
-
-
-
-
435  
410  
454  
483  
815  
732  
860  
955  
-
463  
434  
483  
516  
870  
783  
916  
485  
451  
509  
547  
925  
835  
973  
505  
465  
533  
576  
981  
888  
1030  
-
-
-
-
-
Low  
060  
(5.0)  
DEY  
High  
1013 1072  
-
-
-
-
-
-
-
-
-
-
-
1079 1154  
997 1066  
Table 9: Additional Static Resistance  
Size  
(Tons)  
1
Model  
CFM  
Wet Indoor Coil  
Economizer  
Filter/Frame Kit  
Electric Heat  
500  
600  
700  
800  
900  
1000  
1100  
1200  
700  
800  
900  
1000  
1100  
1200  
1300  
700  
0.01  
0.01  
0.01  
0.01  
0.01  
0.02  
0.03  
0.04  
0.01  
0.01  
0.01  
0.02  
0.03  
0.04  
0.07  
0.01  
0.01  
0.01  
0.02  
0.03  
0.04  
0.04  
0.04  
0.00  
0.00  
0.00  
0.01  
0.01  
0.01  
0.01  
0.02  
0.00  
0.01  
0.01  
0.01  
0.01  
0.02  
0.03  
0.00  
0.01  
0.01  
0.01  
0.01  
0.02  
0.03  
0.04  
0.01  
0.02  
0.02  
0.02  
0.02  
0.02  
0.03  
0.03  
0.02  
0.02  
0.02  
0.02  
0.03  
0.03  
0.17  
0.02  
0.02  
0.02  
0.02  
0.03  
0.03  
0.03  
0.03  
0.02  
0.03  
0.03  
0.03  
0.04  
0.04  
0.05  
0.06  
0.03  
0.03  
0.04  
0.04  
0.05  
0.06  
-
0.03  
0.03  
0.04  
0.04  
0.05  
0.06  
0.07  
0.08  
024  
DEX  
(2.0)  
030  
(2.5)  
DEX  
DEX  
800  
900  
036  
1000  
1100  
1200  
1300  
1400  
(3.0)  
14  
Unitary Products Group  
288429-YIM-A-0307  
Table 9: Additional Static Resistance (Continued)  
Size  
(Tons)  
1
Model  
CFM  
Wet Indoor Coil  
Economizer  
Filter/Frame Kit  
Electric Heat  
1100  
1200  
1300  
1400  
1500  
1600  
1100  
1200  
1300  
1400  
1500  
1600  
1700  
1800  
1900  
2000  
1100  
1200  
1300  
1400  
1500  
1600  
1700  
1800  
1900  
2000  
0.03  
0.04  
0.04  
0.04  
0.05  
0.06  
0.03  
0.04  
0.04  
0.04  
0.04  
0.04  
0.05  
0.05  
0.06  
0.07  
0.03  
0.04  
0.04  
0.04  
0.04  
0.04  
0.05  
0.05  
0.06  
0.07  
0.01  
0.02  
0.03  
0.04  
0.05  
0.06  
0.01  
0.02  
0.03  
0.04  
0.05  
0.06  
0.07  
0.07  
0.08  
0.08  
0.01  
0.02  
0.03  
0.04  
0.05  
0.06  
0.07  
0.07  
0.08  
0.08  
0.03  
0.03  
0.03  
0.03  
0.04  
0.05  
0.03  
0.03  
0.03  
0.03  
0.04  
0.05  
0.05  
0.06  
0.06  
0.07  
0.03  
0.03  
0.03  
0.03  
0.04  
0.05  
0.05  
0.06  
0.06  
0.07  
0.05  
0.06  
0.07  
0.08  
0.09  
0.10  
0.05  
0.06  
0.07  
0.08  
0.09  
0.10  
0.11  
0.11  
0.11  
0.12  
0.05  
0.06  
0.07  
0.08  
0.09  
0.10  
0.11  
0.11  
0.11  
0.12  
042  
DEX  
(3.5)  
048  
DEX  
(4.0)  
060  
DEY  
(5.0)  
1. The pressure drop through the economizer is greater for 100% outdoor air than for 100% return air. If the resistance of the  
return air duct is less than 0.25 IWG, the unit will deliver less CFM during full economizer operation.  
Table 10: Electric Heat Minimum Supply Air  
Minimum Supply Air (CFM)  
Heater kW  
Size  
(Tons)  
Model  
Voltage  
5.0  
7.5  
10.0  
15.0  
20.0  
25.0  
024  
(2.0)  
030  
(2.5)  
DEX  
DEX  
208/230-1-60  
208/230-1-60  
630  
630  
800  
800  
-
-
-
630  
630  
800  
-
-
208/230-1-60  
208/230-3-60  
460-3-60  
1070  
1070  
1070  
1070  
1070  
1070  
1070  
1070  
1070  
1225  
1225  
1225  
1200  
1200  
1200  
1615  
1615  
1615  
1070  
1070  
1070  
1225  
1225  
1225  
1430  
1430  
1430  
1615  
1615  
1615  
-
-
-
-
-
-
036  
(3.0)  
DEX  
DEX  
DEX  
DEY  
208/230-1-60  
208/230-3-60  
460-3-60  
1225  
1225  
1225  
1225  
1225  
1225  
-
-
-
-
-
-
042  
(3.5)  
208/230-1-60  
208/230-3-60  
460-3-60  
208/230-1-60  
208/230-3-60  
460-3-60  
-
-
-
-
-
-
-
-
-
-
-
-
1430  
1430  
1430  
1955  
1955  
1955  
1430  
1430  
1430  
1955  
1955  
1955  
048  
(4.0)  
060  
(5.0)  
Table 11: Indoor Blower Specifications  
Table 12: Electric Heat Multipliers  
Voltage  
Motor  
Eff.  
Size  
(Tons)  
Model  
kW Capacity Multipliers1  
HP  
RPM  
SF  
Frame  
Nominal  
Applied  
208  
230  
024  
(2.0)  
0.75  
0.92  
0.92  
DEX  
DEX  
DEX  
DEX  
DEX  
DEY  
1/2  
Variable  
0.8  
0.8  
0.8  
0.8  
0.8  
0.8  
1.0  
48  
240  
030  
(2.5)  
036  
(3.0)  
042  
(3.5)  
1/2  
1/2  
3/4  
3/4  
1
Variable  
Variable  
Variable  
Variable  
Variable  
1.0  
1.0  
1.0  
1.0  
1.0  
48  
48  
48  
48  
48  
480  
460  
1. Electric heaters are rated at nominal voltage. Use this table to  
determine the electric heat capacity for heaters applied at  
lower voltages.  
048  
(4.0)  
060  
(5.0)  
Unitary Products Group  
15  
288429-YIM-A-0307  
Table 13: DEX024 Superheat Charging  
Superheat at Compressor Suction (°F), Airflow = 800 CFM  
Indoor Wet Bulb Temp (°F)  
Outdoor  
Temp  
(°F)  
55  
23.4  
20.8  
18.3  
15.8  
13.2  
12.9  
12.5  
10.4  
8.3  
57  
59  
25.0  
22.4  
19.8  
17.2  
14.6  
14.0  
13.5  
11.6  
9.8  
61  
63  
65  
67  
69  
71  
73  
75  
65  
70  
24.2  
21.6  
19.1  
16.5  
13.9  
13.5  
13.0  
11.0  
9.1  
25.8  
23.2  
20.6  
17.9  
15.3  
14.6  
14.0  
12.2  
10.5  
8.7  
26.7  
24.0  
21.3  
18.6  
15.9  
15.2  
14.5  
12.8  
11.2  
9.5  
27.5  
24.8  
22.1  
19.3  
16.6  
15.8  
15.0  
13.4  
11.9  
10.3  
8.8  
28.3  
25.6  
22.8  
20.1  
17.3  
16.4  
15.5  
14.1  
12.6  
11.2  
9.7  
28.1  
25.7  
23.3  
20.9  
18.5  
17.7  
16.9  
15.8  
14.6  
13.5  
12.3  
27.9  
25.9  
23.8  
21.8  
19.7  
19.0  
18.3  
17.5  
16.6  
15.8  
14.9  
27.8  
25.9  
24.1  
22.2  
20.3  
19.7  
19.0  
18.3  
17.6  
16.9  
16.2  
27.7  
26.0  
24.3  
22.6  
20.9  
20.3  
19.7  
19.2  
18.6  
18.1  
17.5  
75  
80  
85  
90  
95  
100  
105  
110  
115  
6.3  
7.1  
7.9  
-
5.1  
6.0  
6.9  
7.9  
Table 14: DEX030 Superheat Charging  
Superheat at Compressor Suction (°F), Airflow = 1000 CFM  
Indoor Wet Bulb Temp (°F)  
Outdoor  
Temp  
(°F)  
55  
57  
59  
61  
63  
65  
67  
69  
71  
73  
75  
65  
70  
13.4  
13.3  
13.2  
13.0  
12.9  
12.6  
12.4  
12.3  
12.2  
12.1  
11.9  
13.9  
13.8  
13.6  
13.5  
13.3  
13.0  
12.7  
12.6  
12.5  
12.3  
12.2  
14.4  
14.2  
14.1  
13.9  
13.7  
13.4  
13.0  
12.9  
12.7  
12.6  
12.5  
14.9  
14.7  
14.5  
14.3  
14.1  
13.7  
13.3  
13.2  
13.0  
12.9  
12.7  
15.4  
15.2  
15.0  
14.7  
14.5  
14.1  
13.7  
13.5  
13.3  
13.2  
13.0  
15.9  
15.7  
15.4  
15.2  
14.9  
14.4  
14.0  
13.8  
13.6  
13.4  
13.2  
16.4  
16.1  
15.9  
15.6  
15.3  
14.8  
14.3  
14.1  
13.9  
13.7  
13.5  
17.4  
17.1  
16.8  
16.4  
16.1  
15.7  
15.3  
15.1  
14.9  
14.7  
14.5  
18.3  
18.0  
17.7  
17.3  
17.0  
16.7  
16.4  
16.2  
16.0  
15.8  
15.6  
18.8  
18.5  
18.1  
17.8  
17.4  
17.2  
16.9  
16.7  
16.5  
16.3  
16.1  
19.3  
18.9  
18.6  
18.2  
17.8  
17.6  
17.4  
17.2  
17.0  
16.8  
16.6  
75  
80  
85  
90  
95  
100  
105  
110  
115  
Table 15: DEX036 Superheat Charging  
Superheat at Compressor Suction (°F), Airflow = 1200 CFM  
Indoor Wet Bulb Temp (°F)  
Outdoor  
Temp  
(°F)  
55  
57  
59  
61  
63  
65  
67  
69  
71  
73  
75  
65  
70  
18.2  
18.7  
19.1  
19.6  
20.0  
20.2  
20.5  
20.7  
20.9  
21.2  
21.4  
18.5  
18.9  
19.3  
19.6  
20.0  
20.3  
20.5  
20.7  
21.0  
21.2  
21.4  
18.8  
19.1  
19.4  
19.7  
20.0  
20.3  
20.5  
20.7  
21.0  
21.2  
21.4  
19.1  
19.3  
19.6  
19.8  
20.0  
20.3  
20.5  
20.8  
21.0  
21.2  
21.4  
19.4  
19.6  
19.7  
19.9  
20.0  
20.3  
20.6  
20.8  
21.0  
21.2  
21.4  
19.7  
19.8  
19.9  
19.9  
20.0  
20.3  
20.6  
20.8  
21.0  
21.2  
21.4  
20.0  
20.0  
20.0  
20.0  
20.0  
20.3  
20.6  
20.8  
21.0  
21.2  
21.4  
20.6  
20.6  
20.5  
20.4  
20.3  
20.7  
21.0  
21.3  
21.5  
21.8  
22.0  
21.3  
21.1  
21.0  
20.8  
20.6  
21.0  
21.4  
21.7  
22.0  
22.3  
22.6  
21.6  
21.4  
21.2  
21.0  
20.8  
21.2  
21.6  
21.9  
22.3  
22.6  
22.9  
21.9  
21.7  
21.4  
21.2  
21.0  
21.4  
21.8  
22.2  
22.5  
22.9  
23.2  
75  
80  
85  
90  
95  
100  
105  
110  
115  
Table 16: DEX042 Superheat Charging  
Superheat at Compressor Suction (°F), Airflow = 1400 CFM  
Indoor Wet Bulb Temp (°F)  
Outdoor  
Temp  
(°F)  
55  
11.7  
11.1  
10.4  
9.8  
57  
12.7  
11.9  
11.1  
10.2  
9.4  
59  
13.7  
12.7  
11.7  
10.7  
9.6  
61  
14.7  
13.5  
12.3  
11.1  
9.9  
63  
65  
67  
69  
71  
73  
75  
65  
70  
15.7  
14.3  
12.9  
11.5  
10.1  
9.9  
16.7  
15.1  
13.5  
11.9  
10.4  
10.1  
9.8  
17.7  
15.9  
14.2  
12.4  
10.6  
10.3  
10.0  
10.5  
10.9  
11.4  
11.8  
20.0  
17.9  
15.8  
13.7  
11.6  
11.2  
10.9  
11.4  
12.0  
12.5  
13.1  
22.3  
19.8  
17.4  
15.0  
12.5  
12.1  
11.8  
12.4  
13.1  
13.7  
14.4  
23.4  
20.8  
18.2  
15.6  
13.0  
12.6  
12.2  
12.9  
13.6  
14.3  
15.0  
24.5  
21.8  
19.0  
16.2  
13.5  
13.1  
12.6  
13.4  
14.1  
14.9  
15.6  
75  
80  
85  
9.2  
90  
9.0  
9.2  
9.4  
9.6  
95  
8.8  
9.0  
9.2  
9.4  
9.6  
100  
105  
110  
115  
9.4  
9.6  
9.7  
9.9  
10.1  
10.6  
11.1  
11.6  
10.3  
10.7  
11.2  
11.7  
9.9  
10.1  
10.7  
11.2  
10.3  
10.8  
11.3  
10.4  
10.9  
11.4  
10.5  
11.1  
16  
Unitary Products Group  
288429-YIM-A-0307  
Table 17: DEX048 Superheat Charging  
Superheat at Compressor Suction (°F), Airflow = 1600 CFM  
Indoor Wet Bulb Temp (°F)  
Outdoor  
Temp  
(°F)  
55  
10.1  
9.9  
9.7  
9.5  
9.2  
8.8  
8.4  
8.3  
8.3  
8.2  
8.1  
57  
10.0  
9.8  
9.6  
9.4  
9.2  
8.9  
8.5  
8.4  
8.4  
8.3  
8.2  
59  
9.9  
9.7  
9.5  
9.4  
9.2  
8.9  
8.6  
8.5  
8.4  
8.4  
8.3  
61  
9.8  
9.7  
9.5  
9.3  
9.1  
8.9  
8.7  
8.6  
8.5  
8.4  
8.3  
63  
9.8  
9.6  
9.4  
9.3  
9.1  
9.0  
8.9  
8.7  
8.6  
8.5  
8.4  
65  
9.7  
9.5  
9.4  
9.2  
9.0  
9.0  
9.0  
8.8  
8.7  
8.6  
8.4  
67  
9.6  
9.5  
9.3  
9.2  
9.0  
9.1  
9.1  
9.0  
8.8  
8.7  
8.5  
69  
9.6  
9.5  
9.4  
9.3  
9.1  
9.2  
9.3  
9.2  
9.2  
9.1  
9.0  
71  
9.7  
9.6  
9.5  
9.4  
9.2  
9.4  
9.5  
9.5  
9.5  
9.5  
9.5  
73  
9.7  
9.6  
9.5  
9.4  
9.3  
9.5  
9.6  
9.7  
9.7  
9.8  
9.8  
75  
9.7  
9.6  
9.5  
9.5  
9.4  
9.5  
9.7  
9.8  
9.9  
10.0  
10.1  
65  
70  
75  
80  
85  
90  
95  
100  
105  
110  
115  
Table 18: DEY060 Superheat Charging  
Superheat at Compressor Suction (°F), Airflow = 1750 CFM  
Indoor Wet Bulb Temp (°F)  
Outdoor  
Temp  
(°F)  
55  
57  
59  
61  
63  
65  
67  
69  
71  
73  
75  
65  
70  
16.6  
16.2  
15.9  
15.5  
15.2  
14.0  
12.9  
12.6  
12.4  
12.2  
11.9  
16.7  
16.4  
16.0  
15.7  
15.3  
14.2  
13.0  
12.8  
12.5  
12.3  
12.0  
16.8  
16.5  
16.1  
15.8  
15.4  
14.3  
13.1  
12.9  
12.6  
12.3  
12.1  
16.9  
16.6  
16.2  
15.9  
15.5  
14.4  
13.2  
13.0  
12.7  
12.4  
12.2  
17.1  
16.7  
16.4  
16.0  
15.7  
14.5  
13.4  
13.1  
12.8  
12.5  
12.2  
17.2  
16.8  
16.5  
16.1  
15.8  
14.6  
13.5  
13.2  
12.9  
12.6  
12.3  
17.3  
17.0  
16.6  
16.3  
15.9  
14.8  
13.6  
13.3  
13.0  
12.7  
12.4  
17.9  
17.4  
17.0  
16.5  
16.1  
15.3  
14.6  
14.3  
14.0  
13.7  
13.4  
18.4  
17.9  
17.4  
16.8  
16.3  
15.9  
15.5  
15.2  
14.9  
14.6  
14.3  
18.7  
18.1  
17.6  
17.0  
16.4  
16.2  
16.0  
15.7  
15.4  
15.1  
14.8  
19.0  
18.4  
17.7  
17.1  
16.5  
16.5  
16.5  
16.2  
15.9  
15.6  
15.3  
75  
80  
85  
90  
95  
100  
105  
110  
115  
Airflow may be increased by 10% by moving the “ADJ” jumper  
to “B”. Airflow may be decreased by 10% by moving the “ADJ”  
jumper to “C”.  
Blower Speed Selection  
The variable speed blowers are designed to deliver constant  
CFM regardless of the external static pressure (ESP) in the  
NOTE: CFM indicator light flashes once for every 100 CFM  
ductwork. Therefore, if too many supply registers are closed, a  
filter becomes clogged, or there is a restriction in the ductwork,  
the motor will automatically operate at a higher speed to  
compensate for the higher ESP. This may result in a higher  
operating sound level.  
(i.e., 12 flashes = 1200 CFM).  
To Set Delay Profile:  
Every unit has multiple cooling “blower off delay” profiles to  
optimize system performance and efficiency. Refer to Table  
19 for the regional climate in your area. Place the “DELAY”  
jumper tap on the CFM selection board to the appropriate pin  
setting.  
These units have variable speed motors that automatically  
adjust to provide constant CFM from 0.2" to 0.6" w.c. static  
pressure. From 0.6" to 1.0" static pressure, CFM is reduced by  
2% per 0.1" increase in static. Operation on duct systems with  
greater than 1.0" w.c. external static pressure is not  
recommended.  
To Set Electric Heat CFM:  
The airflow required for Electric Heat may be different than for  
cooling.  
To Set Cooling CFM:  
Refer to Table 10 for the minimum required CFM for the  
electric heater installed. Find the desired airflow in Tables 7  
and 8. Set the “Heat” Jumper on the CFM selection board to  
tap shown.  
Refer to Tables 7 and 8 for the possible cooling and heating  
CFM selections.  
Find the recommended system airflow for the unit model.  
Set desired cooling airflow by moving the jumper on the “Cool”  
tap located on the CFM selection board as indicated in Tables  
7, 8 and Figure 10.  
Unitary Products Group  
17  
288429-YIM-A-0307  
Fan Only CFM:  
operate the blower at high speed and energizes the  
compressor solenoid to close the bypass ports so that the  
compressor operates at full capacity. If the outdoor fan  
motor has an ECM controller, the 24 volts at "Y2" signals  
the motor to operate at high speed.  
When the connection is made from “R” to “G”, the fan only  
mode is activated. In this mode, the blower will deliver 75% of  
the cooling system CFM. This connection is factory set from the  
manufacturer and cannot be field adjusted.  
4. When the cooling demand is satisfied, the 24 volt "Y1" and  
"Y2" signals are removed and the M1 contactor is de-  
energized. If the fan switch on the thermostat is in the "ON"  
position, the blower will continue to run at 75% of the rated  
airflow. If the fan switch is in the "AUTO" position, the  
blower will continue to run for a short period as determined  
by the "DELAY" jumper setting on the CFM Selector board.  
:ꢀ  
:ꢁ  
5
Heating Sequence Of Operations  
<ꢂ<ꢀ  
1. If the fan switch on the thermostat is in the "ON" position, the  
24 volts at "G" signals the ECM motor controller to operate  
the blower at 75% of the rated airflow. If the fan switch on the  
thermostat is in the "AUTO" position, the blower operates  
only when there is a call for heating by the thermostat.  
<ꢁ  
2. For units equipped with supplementary electric heat, 24  
volts at "W" sends 24 volts to "W2" on the fan control board.  
The 24 volt signal energizes all stages of electric heat.  
3. When the heating demand is satisfied, the 24 volt "W" signal  
is removed and the electric heat is de-energized. The M1  
contactor is de-energized when the 24 volt "Y" signal is  
removed. If the fan switch on the thermostat is in the "ON"  
position, the blower will continue to run at 75% of the rated  
airflow. If the fan switch is in the "AUTO" position, the blower  
will continue to run for a short period as determined by the  
"DELAY" jumper setting on the CFM Selector board.  
Figure 10: Control Board Speed Tap Location  
Table 19: Delay Profile  
Delay Tap  
Jumper at “A”  
Jumper at “B”  
Jumper at “C”  
Jumper at “D”  
Regional Climate Type  
Standard Setting  
Humid Climate  
Dry Climate  
Temperate Climate  
Please refer to Tables 20 and 21 for more information.  
Operation  
Electric Heat Limit Switch Operation  
Cooling Sequence Of Operations  
The limit switch responds to over-temperature conditions in the  
air duct. Opening the device results in dropping power to the  
relays. The control logic will also respond by turning off the  
relays. After four limit cycle trips the unit goes into a 1 hour soft  
lockout period. If the control "sees" another limit cycle during  
this period, the unit will go into a hard lockout condition. Once in  
a hard lockout state, the fan is locked on and the heaters are  
disabled. Only a power cycle will clear this state.  
1. If the fan switch on the thermostat is in the "ON" position, the  
24 volts at "G" signals the ECM motor controller to operate  
the blower at 75% of the rated airflow. If the fan switch on the  
thermostat is in the "AUTO" position, the blower operates  
only when there is a call for cooling by the thermostat.  
2. If the 2-stage thermostat calls for the first stage of cooling,  
the 24 volts at "Y1" signals the ECM controller to operate the  
blower at low speed and closes the contactor coil M1. Power  
is supplied to the compressor and outdoor fan motor. When  
the fan switch on the thermostat is in the "AUTO" position,  
the indoor blower motor is energized at the low-speed  
cooling airflow.  
During the soft lockout period, the fan responds to thermostat  
input but the heaters are enabled. This is to sense a failed  
heater relay. The limit cycle count is reset at the start of a heat  
request. If the limit remains open for period of 80 seconds or  
more, the control is immediately put into a hard lockout  
condition. Only a power cycle will clear this state.  
3. If the 2-stage thermostat calls for the second stage of  
cooling, the 24 volts at "Y2" signals the ECM controller to  
18  
Unitary Products Group  
288429-YIM-A-0307  
Table 20: Thermostat Signals (Single Phase Units)  
Signal  
State  
ON  
Board Function  
BLOWER INSTANT ON AT 75% RATED AIRFLOW  
G
OFF  
BLOWER INSTANT OFF  
BLOWER INSTANT ON  
ON  
OFF  
ON  
COMPRESSOR AND OUTDOOR FAN INSTANT ON (AFTER ANTI-SHORT CYCLE DELAY)  
SYSTEM OPERATES IN FIRST STAGE COOLING  
COMPRESSOR AND OUTDOOR FAN INSTANT OFF  
BLOWER OFF DELAY DETERMINED BY “DELAY” JUMPER SETTING  
BLOWER INSTANT ON  
G & Y1  
COMPRESSOR AND OUTDOOR FAN INSTANT ON (AFTER ANTI-SHORT CYCLE DELAY)  
SYSTEM OPERATES IN SECOND STAGE COOLING  
COMPRESSOR AND OUTDOOR FAN INSTANT OFF  
BLOWER OFF DELAY DETERMINED BY “DELAY” JUMPER SETTING  
BLOWER INSTANT ON  
G, Y1 & Y2  
OFF  
HEATER BANK 1 ELEC. HEAT INSTANT ON  
HEATER BANK 2 ELEC. HEAT 10 SEC. DELAY ON  
HEATER BANK 3 ELEC. HEAT 20 SEC. DELAY ON  
HEATER BANK 3 ELEC. HEAT INSTANT OFF  
HEATER BANK 2 ELEC. HEAT 1/2 SEC. DELAY OFF  
HEATER BANK 1 ELEC. HEAT 1 SEC. DELAY OFF  
BLOWER 60 SEC. DELAY OFF  
ON  
OFF  
ON  
G & W  
BLOWER INSTANT ON  
HEATER BANK 1 ELEC. HEAT INSTANT ON  
HEATER BANK 2 ELEC. HEAT 10 SEC. DELAY ON  
HEATER BANK 3 ELEC. HEAT 20 SEC. DELAY ON  
HEATER BANK 3 ELEC. HEAT INSTANT OFF  
HEATER BANK 2 ELEC. HEAT 1/2 SEC. DELAY OFF  
HEATER BANK 1 ELEC. HEAT 1 SEC. DELAY OFF  
BLOWER 60 SEC. DELAY OFF  
W
OFF  
Table 21: Thermostat Signals (Three Phase Units)  
Signal  
State  
ON  
Board Function  
BLOWER INSTANT ON AT 75% RATED AIRFLOW  
G
OFF  
BLOWER INSTANT OFF  
BLOWER INSTANT ON  
ON  
OFF  
ON  
COMPRESSOR AND OUTDOOR FAN INSTANT ON (AFTER ANTI-SHORT CYCLE DELAY)  
SYSTEM OPERATES IN FIRST STAGE COOLING  
COMPRESSOR AND OUTDOOR FAN INSTANT OFF  
BLOWER OFF DELAY DETERMINED BY “DELAY” JUMPER SETTING  
BLOWER INSTANT ON  
G & Y1  
G, Y1 & Y2  
COMPRESSOR AND OUTDOOR FAN INSTANT ON (AFTER ANTI-SHORT CYCLE DELAY)  
SYSTEM OPERATES IN SECOND STAGE COOLING  
BLOWER INSTANT ON  
ON  
OFF  
ON  
HEATER BANK 1, 2 & 3 ELEC. HEAT INSTANT ON  
HEATER BANK 4, 5 & 6 ELEC. HEAT 10 SEC. DELAY ON  
HEATER BANK 4, 5 & 6 ELEC. HEAT INSTANT OFF  
HEATER BANK 1, 2 & 3 ELEC. HEAT 1/2 SEC. DELAY OFF  
BLOWER 60 SEC. DELAY OFF  
G & W  
BLOWER INSTANT ON  
HEATER BANK 1, 2 & 3 ELEC. HEAT INSTANT ON  
HEATER BANK 4, 5 & 6 ELEC. HEAT 10 SEC. DELAY ON  
HEATER BANK 4, 5 & 6 ELEC. HEAT INSTANT OFF  
HEATER BANK 1, 2 & 3 ELEC. HEAT 1/2 SEC. DELAY OFF  
BLOWER 60 SEC. DELAY OFF  
W
OFF  
Unitary Products Group  
19  
288429-YIM-A-0307  
Maintenance  
Normal Maintenance  
Exercise care when cleaning the coil so that the coil fins  
are not damaged.  
Do not permit the hot condenser air discharge to be  
obstructed by overhanging structures or shrubs.  
Prior to any of the following maintenance procedures,  
shut off all power to the unit, to avoid personal injury.  
Troubleshooting  
Periodic maintenance consists of changing or cleaning filters  
and general cleaning of the outdoor coil.  
FILTERS - Inspect once a month. Replace Disposable or clean  
Permanent Type as necessary. DO NOT replace Permanent  
Type with Disposable.  
Troubleshooting of components necessarily requires  
opening the electrical control box with the power  
connected to the unit. Use extreme care when working  
with live circuit! Check the unit nameplate for the correct  
range before making any connections with line  
terminals.  
MOTORS - Indoor and outdoor fan motors are permanently  
lubricated and require no maintenance.  
OUTDOOR COIL - Dirt should not be allowed to accumulate on  
the outdoor coil surface or other parts in the air circuit. Cleaning  
should be as often as necessary to keep the coil clean. Use a  
brush, vacuum cleaner attachment, or other suitable means. If  
water is used to clean the coil, be sure that the power to the unit  
is shut off prior to cleaning.  
The wire number or color and terminal designations  
referred to may vary. Check the wiring label inside the  
control box access panel for the correct wiring.  
20  
Unitary Products Group  
288429-YIM-A-0307  
Typical Wiring Diagrams  
Typical DEX024-048, DEY060 Cooling Only 208/230-1-60 volt Wiring Diagram  
Unitary Products Group  
21  
288429-YIM-A-0307  
Typical DEX036-048, DEY060 Cooling Only 208/230-3-60 volt Wiring Diagram  
22  
Unitary Products Group  
288429-YIM-A-0307  
Typical DEX036-048, DEY060 Cooling Only 460-3-60 volt Wiring Diagram  
Unitary Products Group  
23  
R-410A QUICK REFERENCE GUIDE  
Refer to Installation Instructions for specific installation requirements.  
R-410A Refrigerant operates at 50 - 70 percent higher pressures than R-22. Be sure that servicing  
equipment and replacement components are designed to operate with R-410A.  
R-410A Refrigerant cylinders are rose colored.  
Recovery cylinder service pressure rating must be 400 psig, DOT 4BA400, or DOT BW400.  
Recovery equipment must be rated for R-410A.  
Do Not use R-410A service equipment on R-22 systems. All hoses, gages, recovery cylinders, charging  
cylinders and recovery equipment must be dedicated for use on R-410A systems only.  
Manifold sets must be at least 700 psig high side, and 180 psig low side, with 550 psig retard.  
All hoses must have a service pressure rating of 800 psig.  
Leak detectors must be designed to detect HFC refrigerants.  
Systems must be charged with liquid refrigerant. Use a commercial type metering device in the  
manifold hose.  
R-410A can only be used with POE type oils.  
POE type oils rapidly absorb moisture from the atmosphere.  
Vacuum pumps will not remove moisture from POE type oils.  
Do not use liquid line driers with a rated working pressure rating less than 600 psig.  
Do not install suction line driers in the liquid line.  
A liquid line drier is required on every unit.  
Do not use a R-22 TXV. If a TXV is to be used, it must be a R-410A TXV.  
Never open system to atmosphere when under a vacuum.  
If system must be opened for service, evacuate system then break the vacuum with dry nitrogen and  
replace all filter driers.  
Figure 11: R-410A Quick Reference Guide  
Subject to change without notice. Printed in U.S.A.  
288429-YIM-A-0307  
Copyright © 2007 by Unitary Products Group. All rights reserved.  
Supersedes: Nothing  
Unitary  
Products  
Group  
5005  
York  
Drive  
Norman  
OK  
73069  

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