York EA090 Quick start guide

TECHNICAL GUIDE
SPLIT-SYSTEM
HEAT PUMPS
EA090/FA090
208/230/460
VOLT ONLY
036-21371-001-B-0203
FOR DISTRIBUTION USE ONLY - NOT TO BE USED AT POINT OF RETAIL SALE
® DESCRIPTION
YORK has combined the latest concepts in modern technology with
time-proven quality standards to design a split-system heat pump to
meet the demands of the energy-and quality-conscious commercial
market.
Both the outdoor and indoor units are completely piped and wired at
the factory. Only the interconnecting liquid and vapor lines are required
to complete the refrigerant circuit. Every unit is dehydrated, evacuated,
leak tested and pressure tested before being pressurized with a hold-
ing charge of refrigerant-22 for shipment and/or storage. The compres-
sor, the fan motors and the controls are functionally tested after the
units are fabricated to assure a reliable start-up and years of depend-
able operation.
These units have been tested by Underwriters' Laboratories and will
be shipped with UL and CUL labels.
OUTDOOR UNIT
Every outdoor unit includes a heavy-duty compressor with a crankcase
heater, line break overload protection, a suction line accumulator with
a fusible plug, a 4-way reversing valve with a 24-volt solenoid, outdoor
fan motor(s) with inherent protection, and a copper tube/aluminum fin
coil that is positioned vertically for better drainage of the water that will
condense on it during the heating cycle.
They also include a filter-drier, an expansion valve and a distributor
that are only used during the heating cycle plus a check valve to pro-
vide the proper flow of refrigerant through the unit during both the cool-
ing and heating cycles.
To eliminate the costly cabinet deterioration problems usually associ-
ated with outdoor equipment, all sheet metal parts are constructed of
commercial grade (G90) galvanized steel. After fabrication, each part
is thoroughly cleaned to remove any grease or dirt from its surfaces.
The parts that will be exposed to the weather are then coated with a
“desert sand” powder paint to assure a quality finish for many years.
This coating system has passed the 750 hour, salt spray test per
ASTM Standard B117. To assist in servicing, the high and low pressure
service connections are exterior to the cabinet, allowing simple
access.
The fan guards are vinyl-coated to provide additional rust protection.
An optional decorative coil guard is available to protect the coil on the
outdoor unit.
INDOOR UNIT
Every indoor unit includes a well-insulated cabinet, a copper tube/alu-
minum fin coil, 1" throwaway filters, a centrifugal blower, a blower
motor, adjustable drive components, a blower motor contactor and a
small holding charge of refrigerant-22.
They also include a filter-drier, an expansion valve and a distributor
that are only used during the cooling cycle plus a check valve to pro-
vide the proper flow of refrigerant through the coil during both the cool-
ing and heating cycles.
The units are shipped in the vertical position ready for field installation.
For horizontal installation, interchange the solid bottom panel and the
return air duct flange on the front of the unit.

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2Unitary Products Group
TABLE OF CONTENTS
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
OUTDOOR UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
INDOOR UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
APPLICATION FLEXIBILITY . . . . . . . . . . . . . . . . . . . 3
Outdoor Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Indoor Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
SYSTEM FLEXIBILITY. . . . . . . . . . . . . . . . . . . . . . . . 5
ACCESSORIES (FIELD-INSTALLED) . . . . . . . . . . . 11
LIST OF FIGURES
Figure Page
No. Description No.
1 EA090 Outdoor Units. . . . . . . . . . . . . . . . . . . . . . 3
2 FA090 Indoor Units . . . . . . . . . . . . . . . . . . . . . . . 3
3 FA090 Airflow Chart. . . . . . . . . . . . . . . . . . . . . . 10
4 Unit Dimensions & Clearances - Outdoor
Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5 Unit Dimensions & Clearances - Indoor
Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6 Field Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
7 Accessory Dimensions . . . . . . . . . . . . . . . . . . . 15
LIST OF TABLES
Table Page
No. Description No.
1 ARI Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2 System Application Data . . . . . . . . . . . . . . . . . . . 4
3 Refrigerant Piping Limitations . . . . . . . . . . . . . . . 4
4 Cooling Capacity - EA090 . . . . . . . . . . . . . . . . . . 6
5 Heating Capacities . . . . . . . . . . . . . . . . . . . . . . . 8
6 Electric Heat Accessory . . . . . . . . . . . . . . . . . . . 9
7 Blower Motor and Drive Data . . . . . . . . . . . . . . . 9
8 Supply Air Blower Performance FA090. . . . . . . . 9
9 Supply Air Plenum Performance Data. . . . . . . . 10
10 Static Resistances for Unit Accessories (IWG) . 11
11 Physical Data (Outdoor Unit). . . . . . . . . . . . . . . 16
12 Physical Data (Indoor Unit) . . . . . . . . . . . . . . . . 16
13 Physical Data - Electric Heat Accessories . . . . 17
14 Electrical Data - Outdoor Unit . . . . . . . . . . . . . . 17
15 Indoor Unit - Heat Pump Only . . . . . . . . . . . . . . 17
16 Control Wire Sizing . . . . . . . . . . . . . . . . . . . . . . 17
17 Heat Pump With Electric Heat. . . . . . . . . . . . . . 18

036-21371-001-B-0203
Unitary Products Group 3
APPLICATION FLEXIBILITY
OUTDOOR UNITS
These outdoor units are lightweight and can be installed on
almost any roof.
Units can be lifted using nylon straps with hooks at the holes
provided in the base rails, or they may be lifted with a forklift
through the slotted openings in the base rails.
A quality appearance and low sound levels make these units
suitable for most ground level locations.
Remember that during heat and defrost cycles, condensate
will drip from the underside of the unit coils and that this con-
densate will freeze when the temperature of the outdoor air is
below 32°F. A gravel bed or some other means of handling
this condensate may have to be provided.
INDOOR UNITS
These indoor units are shipped for vertical installation, but
may be field converted for horizontal applications by separat-
ing and repositioning the Blower Section. See product instal-
lation manual for for detail.
• The Supply Air Plenum and the Return Air Grille acces-
sories can be used on either arrangement.
• The Base accessory can only be used on the vertical
arrangement.
Units installed horizontally are designed for ceiling suspen-
sion. Four 3/8" - 16 weldnuts are provided in the angle sup-
ports on the front of the unit. Knockouts are provided in the
exterior panels for access to these weldnuts. The hanger
rods must be supplied in the field.
FIGURE 1: EA090 - OUTDOOR UNITS
5FT.MIN.
FORK-LIFT
OPENINGS
TYPICAL
RIGGING
FIGURE 2: FA090 - INDOOR UNITS

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4Unitary Products Group
1Certified in accordance with the Unitary Large Equipment certification program, which is based on ARI Standard 340/360.
2Rated in accordance with ARI Standard 270.
3Deduct 1 MBH when a unit operates at 208 volts.
TABLE 1: ARI RATINGS 1- COOLING, HEATING AND SOUND
Model Cooling Capacity
Heating Capacity
High Outdoor
Temperature (47º F)
Low Outdoor
Temperature (17º F)
Outdoor
Unit
Indoor
Unit MBH3EER MBH3COP MBH3COP
EA090 FA090 90 10.67 87.7 3.25 55 2.34
Outdoor Unit Sound Rating2
(bels)
EA090 8.9
TABLE 2: SYSTEM APPLICATION DATA
Air Temperature on OUTDOOR Coil, ºF Air Temperature on INDOOR Coil, ºF
Minimum Maximum minimum Maximum
Cool Heat Cool heat Cool Heat Cool Heat
40 db 0 db1115 db 75 db 57 wb 50 db272 wb 80 db
1Below 0ºF, the control circuit will lock out the compressor and allow the electric heat
accessory to cycle at its standby capacity. Air Flow across INDOOR Coil, CFM (Min./Max.)
2Operation below this temperature is permissible for a short period of time when a
unit is required to heat the conditioned space up to 50ºF. FA090 2400/3600
TABLE 3: REFRIGERANT PIPING LIMITATIONS1
System
(Tons)
Maximum
Vertical Rise,2
(Feet)
Maximum
Total Length
(Feet)
7-1/2 60 125
1Refer to installation instruction Form 035-18474-000 for more
detailed information on refrigerant piping.
2Based on the loss of static head in the liquid riser during the
heating cycle.

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Unitary Products Group 5
SYSTEM FLEXIBILITY
The coils for both the indoor and outdoor units are not only
circuited and headered for optimum heating and cooling per-
formance, but also for ample subcooling during all modes of
operation. The sub-cooling permits the outdoor unit to be
mounted 60 feet over or under the indoor unit without any
danger of flashing liquid refrigerant during the heating or the
cooling cycle.
Refer to the REFRIGERANT PIPING table above for more
detailed information on refrigerant pipe limitations.
A = 1-3/8" OD Vapor Line
B = 1-1/8" OD Vapor Line
C = Intermediate Trap - only required when a riser
exceeds 50 feet.
D = Inverted Trap - only required when the horizontal run
to the unit exceeds 25 feet.

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6Unitary Products Group
TABLE 4: COOLING CAPACITY - EA090
86 83 80 77 74 71 68 86 83 80 77 74 71 68
72 99 7.0 59 52 45 39 32 - - 96 7.7 58 51 44 37 31 - -
67 91 6.9 73 66 59 52 46 39 32 88 7.6 72 65 58 51 44 37 31
62 82 6.7 82 78 71 64 57 50 43 82 7.5 82 77 70 63 56 50 43
57 86 6.7 86 83 76 69 62 55 49 89 7.5 87 80 73 66 59 53 46
72 102 7.1 66 58 49 41 33 - - 99 7.8 65 57 48 40 32 - -
67 94 7.0 81 73 64 56 48 40 32 90 7.7 80 71 63 55 47 38 30
62 84 6.8 84 82 77 69 61 52 44 84 7.5 84 81 76 68 60 52 44
57 88 6.8 88 87 83 74 66 58 50 91 7.5 90 86 80 71 63 55 47
72 105 7.2 73 63 53 44 34 - - 101 7.9 71 62 52 43 33 - -
67 96 7.1 89 79 70 60 50 41 31 92 7.7 88 78 68 59 49 39 30
62 86 7.0 86 86 83 74 64 54 45 85 7.6 85 85 83 73 64 54 44
57 90 6.9 90 90 89 80 70 60 51 93 7.6 93 93 86 77 67 57 48
72 106 7.2 75 65 55 45 34 - - 103 7.9 74 64 54 44 34 - -
67 97 7.1 92 82 72 61 51 41 31 94 7.7 91 81 70 60 50 40 30
62 87 7.0 87 87 86 75 65 55 45 87 7.6 87 87 85 75 65 55 45
57 91 6.9 91 91 91 81 71 60 50 94 7.6 94 94 89 79 68 58 48
72 107 7.2 78 67 56 45 35 - - 104 7.9 77 66 55 45 34 - -
67 99 7.1 95 84 73 63 52 41 31 95 7.7 94 83 73 62 51 40 30
62 88 7.0 88 88 88 77 66 56 45 88 7.6 88 88 88 77 66 56 45
57 93 6.9 93 93 93 82 71 60 50 96 7.6 96 96 91 81 70 59 49
86 83 80 77 74 71 68 86 83 80 77 74 71 68
72 93 8.5 56 49 42 35 29 - - 89 9.3 54 47 40 33 26 - -
67 83 8.4 70 63 56 49 42 36 29 79 9.3 68 61 54 48 41 34 27
62 79 8.2 79 75 68 61 55 48 41 76 9.0 76 73 66 60 53 46 39
57 83 8.3 82 76 69 62 55 48 42 78 9.1 78 72 65 58 51 44 37
72 95 8.6 63 55 46 38 30 - - 91 9.4 61 53 45 36 28 - -
67 85 8.5 77 70 62 53 45 37 29 80 9.4 75 68 60 52 44 36 27
62 81 8.3 81 79 75 67 59 50 42 78 9.1 78 76 74 65 57 49 41
57 85 8.3 84 81 76 67 59 51 43 79 9.1 79 76 72 63 55 47 39
72 97 8.7 70 60 51 41 31 - - 92 9.5 68 58 49 39 30 - -
67 87 8.6 85 77 67 58 48 38 29 82 9.4 82 76 66 57 47 37 28
62 82 8.4 82 82 82 72 63 53 43 79 9.2 79 79 81 71 62 52 42
57 87 8.4 87 87 82 73 63 54 44 81 9.2 81 81 79 69 59 50 40
72 99 8.7 72 62 52 42 32 - - 95 9.5 70 60 50 40 30 - -
67 89 8.6 87 79 69 59 49 38 28 84 9.4 84 78 68 57 47 37 27
62 84 8.4 84 84 84 73 63 53 43 81 9.2 81 81 82 72 62 51 41
57 88 8.4 88 88 85 74 64 54 44 83 9.2 83 83 80 70 60 50 40
72 100 8.7 75 64 53 43 32 - - 97 9.5 72 62 51 40 30 - -
67 90 8.6 90 82 71 60 49 39 28 86 9.4 86 80 69 58 48 37 26
62 86 8.4 86 86 85 75 64 53 42 83 9.2 83 83 83 72 62 51 40
57 90 8.4 90 90 87 76 65 55 44 84 9.2 84 84 82 71 61 50 39
3600
2400
2850
3300
3450
Return Dry Bulb (°F)
CFM WB(°F) Return Dry Bulb (°F)
3600
Air On
Evaporaor Coil
105°F 115°F
Total
Capacity 1
(
MBh
)
Total
Input 2
(
kW
)
Sensible Capacity (MBh) Total
Capacity 1
(
MBh
)
Total
Input 2
(
kW
)
Sensible Capacity (MBh)
95°F
Total
Capacity 1
(
MBh
)
Total
Input 2
(
kW
)
Sensible Capacity (MBh) Total
Capacity 1
(
MBh
)
Total
Input 2
(
kW
)
Sensible Capacity (MBh)
Return Dry Bulb (°F)Return Dry Bulb (°F)
Temperature of Air on Condenser Coil
Temperature of Air on Condenser Coil
Air On
Evaporaor Coil
85°F
CFM
2400
2850
3300
WB(°F)
3450

036-21371-001-B-0203
Unitary Products Group 7
The capacities shown are gross ratings. For net capacities, determine the KW requirement of the supply air blower motor per the SUPPLY AIR BLOWER PER-
FORMANCE table. Convert KW to MBH by the following equation and deduct this equivalent heat from the gross cooling ratings.
Blower Motor Heat (MBH) = Blower Motor KW x 3.415
Apply the following correction factors to determine the unit performance at different CFM.
These ratings include the compressor KW and the following KW for the outdoor fan motor(s).
NOTE: Sensible capacity can never exceed total capacity. A higher
corrected sensible capacity indicates a dry coil, and it should be
reduced to the corrected total capacity.
Blower motor KW is not included. Refer to the SUPPLY AIR BLOWER PERFORMANCE table for the KW rating of the supply air blower motor at the design
conditions and add this power requirement to the KW rating.
TABLE 4: COOLING CAPACITY - EA090 (CONT.)
% Nominal Supply Air CFM 80 90 100 110 120
Total Capacity Correction Factor
Sensible Capacity Correction Factor
Kilowatt Correction Factor
0.963
0.935
0.981
0.981
0.965
0.992
1.000
1.000
1.000
1.015
1.049
1.008
1.030
1.098
1.019
Nominal Rating
86 83 80 77 74 71 68
72 85 10.2 52 45 38 31 24 - -
67 74 10.1 66 59 53 46 39 32 25
62 74 9.8 74 71 65 58 51 44 37
57 72 9.9 72 67 61 54 47 40 33
72 87 10.3 59 51 43 34 26 - -
67 76 10.2 73 67 59 51 42 34 26
62 75 9.9 75 74 72 64 56 48 39
57 73 10.0 73 71 68 60 51 43 35
72 88 10.4 66 57 47 38 28 - -
67 77 10.3 77 75 65 55 46 36 27
62 76 10.0 76 76 76 70 61 51 41
57 75 10.1 75 75 75 65 56 46 37
72 90 10.4 68 58 48 38 28 - -
67 79 10.3 79 76 66 56 46 36 25
62 78 10.0 78 78 78 70 60 50 40
57 77 10.1 77 77 76 66 56 46 36
72 93 10.3 70 60 49 38 27 - -
67 81 10.3 81 78 67 57 46 35 24
62 80 9.9 80 80 80 70 59 48 38
57 79 10.0 79 79 78 67 56 45 35
1 - These capacities are gross
ratings. For net capacity, deduct
air blower motor, MBh = 3.415 x
kW. Refer to the appropriate
Blower Performance Table for the
kW of the supply air blower motor.
2 - These ratings include the
condenser fan motors (total 1 kW)
and the compressor motors but not
the supply air blower motor.
3450
3600
2400
2850
3300
Air On
Evaporaor Coil
Temperature of Air on Condenser Coil
125°F
Total
Capacity
1
(
MBh
)
Total
Input
2
(
kW
)
Sensible Capacity (MBh)
CFM WB(°F) Return Dry Bulb (°F)
Outdoor Unit Size 7-1/2 Ton
Outdoor Fan Motor KW - 60 HZ 0.83

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8Unitary Products Group
These ratings are based on an outdoor relative humidity of 72%. They include an allowance for defrost but not for the supply air blower motor heat. Refer to the
BLOWER PERFORMANCE table for the KW rating of the supply air blower motor at the design conditions. Convert this KW rating to MBH using the following
equation and add this equivalent heat to the heating capacity.
Blower Motor Heat (MBH) = Blower Motor KW x (3.415 MBH/KW)
Use the following equation to determine the C.O.P. at any operating condition.
C.O.P. = Total MBH (including Blower Motor Heat)/[Total KW (including Blower Motor KW) x 3.415]
correct the MBH and KW ratings with the following factors for different supply air CFM’s.
These ratings include the compressor KW and the following KW for the outdoor fan motor(s).
NOTE: Apply these factors to the above ratings before correcting for the supply air blower heat and power requirements.
.
Blower motor KW is not included. Refer to the SUPPLY AIR BLOWER PERFORMANCE table for the KW rating of the supply air blower motor at the design
conditions and add this power requirement to the KW rating.
UNIT MODEL EA090
OUTDOOR TEMPERATURE (F) (72% RH)
CFM ID DB 0 10 20 30 40 50 60 70
2400 60 MBH 12.237 28.142 44.048 59.954 75.859 91.765 107.671 123.576
2400 KW 2.090 3.179 4.268 5.357 6.447 7.536 8.625 9.714
2400 70 MBH 9.673 25.579 41.485 57.390 73.296 89.201 105.107 121.013
2400 KW 2.576 3.665 4.754 5.844 6.933 8.022 9.111 10.201
2400 80 MBH 9.589 25.495 41.401 57.306 73.212 89.118 105.023 120.929
2400 KW 3.352 4.441 5.530 6.619 7.709 8.798 9.887 10.976
3300 60 MBH 13.565 29.471 45.377 61.282 77.188 93.094 108.999 124.905
3300 KW 1.417 2.506 3.595 4.685 5.774 6.863 7.952 9.041
3300 70 MBH 10.826 26.732 42.637 58.543 74.449 90.354 106.260 122.166
3300 KW 1.852 2.941 4.030 5.119 6.209 7.298 8.387 9.476
3300 80 MBH 10.916 26.822 42.727 58.633 74.539 90.444 106.350 122.256
3300 KW 2.679 3.768 4.857 5.946 7.035 8.125 9.214 10.303
3600 60 MBH 14.284 30.189 46.095 62.001 77.906 93.812 109.718 125.623
3600 KW 1.353 2.442 3.531 4.620 5.710 6.799 7.888 8.977
3600 70 MBH 11.720 27.626 43.531 59.437 75.343 91.248 107.154 123.060
3600 KW 1.839 2.928 4.018 5.107 6.196 7.285 8.374 9.464
3600 80 MBH 11.636 27.542 43.448 59.353 75.259 91.165 107.070 122.976
3600 KW 2.615 3.704 4.793 5.883 6.972 8.061 9.150 10.239
THE MBH AND KW VALUES DO NOT INCLUDE THE SUPPLY AIR BLOWER MOTOR.
FOR NET CAPACITY, ADD THE SUPPLY AIR BLOWER MOTOR HEAT (MBH = 3.415 x KW)
Correction Factor 80 90 100 110 120
MBH
KW
0.96
1.030
0.98
1.015
1.00
1.000
1.02
0.985
1.04
0.970
Outdoor Unit Size 7-1/2 Ton
Outdoor Fan Motor KW - 60 HZ 0.96

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Unitary Products Group 9
**These motors will always be wired for a 460 volt power supply.
Refer to the wiring diagram inside the motor terminal box when
the motor leads have to be reconnected for a 208 or 230 volt
power supply.
TABLE 5: ELECTRIC HEAT ACCESSORY
Heater Model Nominal Voltage
Heating Capacity
Nominal Defrost Supplemental Standby and Emergency
KW MBH KW MBH KW MBH KW MBH
2HS045010 25A 2401
10 34.2 10 34.2 10 34.2 10 34.2
46A 4802
2HS045016 25A 2401 16 54.7 10 34.2 16 54.7 16 54.7
46A 4802
2HS045026 25A 2401 26 88.8 16 54.7 26 88.8 26 88.8
46A 4802
2HS045036 25A 2401 36 123.0 16 54.7 26 88.8 36 123.0
46A 4802
1For 208 volts, multiply the MBH and KW values by (208/240)^2 or 0.751.
For 208 volts, multiply the MBH and KW values by (230/240)^ 2 or 0.918.
2For 460 volts, multiply the MBH and KW values by (460/480)^2 or 0.918.
TABLE 6: BLOWER MOTOR AND DRIVE DATA
Indoor
Unit
Model
Motor
HP
Blower
HP
Adjustable Motor Pulley Fixed Blower Pulley Belt
Pitch Diameter,
(in.)
Bore,
(in.)
Pitch Diameter,
(in.)
Bore,
(in.) Designation Pitch Length, (in.)
FA090 1-1/2 690 - 920 2.8 - 3.8 7/8 7.5 1 A36 37.3
*Motor Specifications:
• 1750 RPM • inherently protected
• 208/230/460-3-60** • 1.15 service factor
• solid base • permanently lubricated
ball bearings
• 56 frame
TABLE 7: SUPPLY AIR BLOWER PERFORMANCE FA0901,2
7.5 HEAT PUMP BLOWER PERFORMANCE
ESP CFM RPM Watts CFM RPM Watts CFM RPM Watts CFM RPM Watts CFM RPM Watts CFM RPM Watts
0.2 4152 895 1877 4014 892 1844 3725 819 1378 3443 774 1201 3219 734 1015 2949 691 855
0.4 3901 900 1752 3753 897 1714 3404 823 1255 3091 777 1084 2818 736 899 2503 694 744
0.6 3617 905 1607 3478 902 1569 3000 837 1118 2671 855 943 2149 740 762 - - -
0.8 3232 911 1443 3083 907 1406 2468 831 957 - - - - - - - - -
12740916122224319131185------ - --- - -
0 turns 1 turn 2 turns 3 turns 4 turns 5 turns
1Available static pressure in IWG to overcome the resistance of the duct system and any accessories added to the unit. Refer to the table above for
additional motor and drive data and to Table 10 for the resistance of these accessories.
2Refer to Form 515.41-AD1 for blower performance curves.

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10 Unitary Products Group
TABLE 8: SUPPLY AIR PLENUM PERFORMANCE DATA
INDOOR
UNIT
MODEL
FA
CFM
FACE
VELO
CITY
(FPM)
ANGLE OF DEFLECTION
VERTICAL
LOUVERS1
(PLAN
VIEW)
HORIZONTAL
LOUVERS2
(ELEVATION
VIEW)
VERTICAL
LOUVERS1
(PLAN
VIEW)
HORIZON-
TAL
LOUVERS2
(ELEVATION
VIEW)
VERTICAL
LOUVERS1
(PLAN
VIEW)
HORIZONTAL
LOUVERS2
(ELEVATION
VIEW)
THROW
(FEET3)
SPREAD
(FEET)3
THROW
(FEET)3
SPREAD
(FEET)3
THROW
(FEET)3
SPREAD
(FEET)3
MIN. MAX. MIN. MAX DROP (FEET)4MIN. MAX MIN. MAX DROP (FEET)4MIN. MAX. MIN. MAX. DROP (FEET)4
090
2400 615 47 74 20 29 19 9 34 53 23 33 17 8 26 39 45 65 9 5
2700 690 53 83 22 32 20 10 39 59 25 36 18 9 29 45 48 71 10 5
3000 770 59 92 24 35 21 10 42 66 27 40 19 9 32 50 52 78 10 5
3300 845 65 101 26 38 21 10 46 73 29 44 19 9 35 55 56 85 10 5
3600 920 71 110 28 41 22 11 50 79 32 47 20 10 38 60 60 91 11 6
1Adjusting the vertical louvers will vary the throw, the spread and the drop.
2Adjusting the horizontal louvers will only vary the drop.
3The velocity of the air will be 125 ft./min. at the minimum distance and 80 ft./min. at the maximum distance.
4The velocity of the conditioned air at the bottom of the drop will be 50 ft./min. Drafts will occur if the drop extends into the occu-
pied level of the conditioned space.
0 °
S P R E A D
2 2 - 1 / 2 °
SPREAD
4 5 °
S P R E A D
0 °
S P R E A D
18˚
0 °
S P R E A D
18˚
0 °
S P R E A D
18˚
FIGURE 3: FA090 AIRFLOW CHART
7
.5-ton Heat Pump
2400
2600
2800
3000
3200
3400
3600
3800
4000
4200
4400
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1
Static
CFM
O turns
1 turn
2 turns
3 turns
4 turns
5 turns

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Unitary Products Group 11
ACCESSORIES (FIELD-INSTALLED)
Three-Phase Electric Heaters are available in several capaci-
ties to provide maximum flexibility. The heater can be
selected to precisely meet the supplemental heating require-
ment of the conditioned space.
These heaters are designed for easy field-installation over
the supply air opening of the indoor unit. They have been
tested by Underwriters’ Laboratories and will be shipped with
a UL label. Every heater will be fully protected against exces-
sive current and temperature by fuses and two high limit ther-
mostats.
Units with Electric Heat will require only one power supply for
both the heating elements and the supply air blower motor,
and the power wiring can be protected by either dual ele-
ment/time delay fuses or an inverse time circuit breaker.
Supply Air Plenums and Return Air Grilles (expanded metal)
are available for free-standing indoor units located in the con-
ditioned space. Both accessories are finished to match the
exterior of the basic unit, and both can be applied with either
vertical or horizontal units. The supply air plenums are fully
insulated and have double-deflection, adjustable grilles.
Base Sections are available to raise vertical indoor units
above the floor. Outdoor air may be introduced through these
bases by cutting an access opening for the outdoor air duct
connection. These bases are finished to match the exterior of
the basic unit. They may have to be insulated in the field for
certain applications.
Decorative Coil Guards can be field installed to enhance pro-
tection of the unit.
Thermostats with either manual or automatic changeover are
available for precise control of the temperature within the
conditioned space. The manual thermostat has a four-posi-
tion selector switch - COOL, OFF, HEAT, and EMERGENCY
HEAT, and three stages of control - one stage of cooling and
two stages of heating. The automatic thermostat has a three-
position selector switch - OFF, AUTOMATIC and EMER-
GENCY HEAT, and four stages of control - two stages of
cooling and two stages of heating.
Both thermostats have a two-position fan switch, AUTO and
ON to provide intermittent or continuous blower operation.
NOTE: The automatic changeover thermostat must be used
on units equipped with a field-supplied economizer.
The first cooling stage of the automatic thermostat
will only control the position of the reversing valve;
the system will still operate with only one stage of
cooling.
The EMERGENCY HEAT position on the selector
switch and the second stage of heating will only func-
tion on systems with an electric heat accessory.
TABLE 9: STATIC RESISTANCES FOR UNIT ACCESSORIES (IWG)
Unit Model Accessory CFM
2400 2700 3000 3300 3600
FA090
ELECTRIC HEAT
10 KW 0.01 0.01 0.01 0.02 0.02
16 KW 0.01 0.02 0.02 0.03 0.04
26 KW 0.03 0.04 0.05 0.06 0.07
36 KW 0.05 0.07 0.08 0.10 0.11
Supply Air Plenum 0.03 0.03 0.04 0.05 0.06
Return Air Grille 0.02 0.03 0.04 0.05 0.06

036-21371-001-B-0203
12 Unitary Products Group
CLEARANCES
CENTER OF GRAVITY
Overhead (Top)1
1Unit must be installed outdoors. Overhanging structures
or shrubs should not obstruct air discharge outlet.
120”
Front
(Piping and Access Panels 30”
Left Side 24”
Right Side 24”
Rear 24”
Bottom2
2Adequate snow clearance must be provided if winter
operation is expected.
0” Unit
Dim. (inches.)
ABCD
EA090 70-1/8 32 29-5/8 16-1/2
FIGURE 4: UNIT DIMENSIONS & CLEARANCES - OUTDOOR UNITS
AIR
OUT
AIR
IN
AIR
OUT
2-3/4
32
2-1/4
32-1/2 70-1/8
8-3/4
5-3/8
CONTROLBOX
ACCESS
GUAGE
LINE
ACCESS 39 1-3/8*OD
VAPORLINE
5/8*OD
LIQUIDLINE
14-3/4
7/8DIA
CONTROLWIRING
ENTRY COMPRESSORAND
CONDENSERFANMOTOR
ACCESS
1-3/8DIA.
POWERWIRING
ENTRY
6-3/4
CONDENSERFANMOTOR
ACCESS
7/8"KNOCKOUT
ACCESSORYWIRING
ENTRY
6-3/4
5-7/8
*AIRON3SIDES
EA090
(7-1/2 Ton)
All dimensions are in inches. They are
subject to change without notice. Certified
dimensions will be provided upon request.

036-21371-001-B-0203
Unitary Products Group 13
ACCESSORIES
• ELECTRIC HEATER - Add 14-1/4” to unit height when
used.
• SUPPLY AIR PLENUM - Add 27-1/2” to unit height when
used.
• BASE - Add 20” to unit height when used.
MINIMUM CLEARANCES
Side with RETURN AIR opening 24”
Side with SUPPLY AIR opening 24”1
1Overall dimension of the unit will vary if an electric heater, a
supply air plenum or a base is used.
Side with PIPING CONNECTIONS 52”2
2This dimension is required for removal of the coil. Only 26” is
required for normal servicing.
Side opposite PIPING CONNECTIONS 12”
Side with access for both POWER &
CONTROL WIRING --3
3Although no clearance is required for service and operation,
some clearance may be required for routing the power wiring
and the control wiring.
Bottom --4
4Allow enough clearance to trap the condensate drain line.
FIGURE 5: UNIT DIMENSIONS & CLEARANCES- INDOOR UNITS

036-21371-001-B-0203
14 Unitary Products Group
FIGURE 6: FIELD WIRING
   
       !  " "
!  " ""  !#
 $% & %  ' %( ' )'%%* 
+  , % %( $  %    ' $
%'%-    +  ' , ,(.''% $  % 
'  /..% &    ''(-
*All OUTDOOR Units and all HEAT PUMP only
INDOOR Units require dual element, time delay
fuses. Circuit breakers can be used in lieu of fuses
for indoor units with an electric heat accessory.
1Only required when an electric heat accessory is
used.
2Only required with a 16 or 26KW electric heat
accessory is used.
3Only required with a 36KW electric heat accessory
is used.

036-21371-001-B-0203
Unitary Products Group 15
FIGURE 7: ACCESSORY DIMENSIONS
Install the control wiring per basic unit instruction
Form 035-18475-000. DO NOT route any field control
wiring through the plenum.
WITHOUT ELECTRIC HEAT - Install the power and
the control wiring per basic unit instruction Form
035-18475-000. DO NOT route any wiring through the
plenum and DO NOT remove this knockout.

036-21371-001-B-0203
16 Unitary Products Group
TABLE 10: PHYSICAL DATA (OUTDOOR UNIT)
DESCRIPTION UNIT MODEL - EA090
Compressor1Rating - tons 7-1/2
Fans
Quantity 2
Diameter - inches No. of Blades 24/3
Nominal CFM 7800
Fan Motors2HP 3/4
RPM 1100
Coil
Rows Deep x Rows High 2 x 36
Finned Length - inches 96
Face Area - square feet 24.00
Tube (Copper) OD - inches 3/8
Fins (Aluminum) per inch 16
Refrigerant-22 (Lbs.)
Holding Charge 1.50
Operating Charge318.8
Pumpdown Capacity424.6
Unit Weight (Lbs.) Shipping 510
Operating 505
1These compressors are fully hermetic.
2These PSC motors are directly connected to the outdoor fans and have inherent protection, ball bearings and a 48 frame. Rotation
(when viewing shaft end of motor) -090 = CW.
3Includes outdoor unit and matched indoor blower unit, but no piping.
4Based on a 95 ºF ambient.
TABLE 11: PHYSICAL DATA (INDOOR UNIT)
DESCRIPTION UNIT MODEL - FA090
Coil
Rows Deep x Rows High 3 x 32
Finned Length - inches 45.5
Face Area - square feet 10.1
Tube (Copper) OD - inches 3/8
Fins (Aluminum) per inch 13
Centrifugal Blower (Forward Curve) Diameter x Width - inches 15 X 15
Blower Motor1Nominal Rating - HP 1-1/2
Filters (Throwaway) Quantity Per Unit - 16” x 25” x 1” 4
Total Face Area - square feet 11.1
Refrigerant-22 (Lbs.) Holding Charge2-
Pumpdown Capacity316.5
Unit Weight4(lbs.) Shipping 425
Operating 385
Accessory Operating Weights (Lbs.)
Electric Heaters5
10 KW 63
16 KW 66
26 KW 71
36 KW 74
Supply Air Plenum 102
Base 60
Return Air Grille 15
Shipping Volume (Basic Unit) - cubic feet 45
1All of these 1750 RPM motors have a solid base, a 56 frame, a 1.15 service factor, inherent protection & permanently lubricated
ball bearings. Refer to Table 7 for additional motor & drive data.
2Although every indoor unit is shipped with a small holding charge, this charge will be lost during installation. Loss of all refrigerant
must be reclaimed during installation - NOT vented into the atmosphere. Refer to the above table on the OUTDOOR unit for the
system operating charge.
3Based on a 80ºF ambient.
4Refer to Installation Instruction Form 035-18475-000 for the distributed weight of these indoor units.
5Refer to Table 13 for additional electric heat accessory data.

036-21371-001-B-0203
Unitary Products Group 17
To determine the total circuit length, add the following distances:
1 - Outdoor Unit to Indoor Unit ________
2 - Indoor Unit to Thermostat ________
3 - Thermostat to Indoor Unit ________
4 = Indoor Unit to Outdoor Unit ________
Total Circuit Length ________
TABLE 12: PHYSICAL DATA - ELECTRIC HEAT ACCESSORIES
Description Nominal Heater Capacity
10 kW 16 KW 26 KW 36 KW
Heater Elements
% Nickel 59.2
% Chromium 16.0
Coil ID - inches 9/32
Watt Density - watts/sq.in. 59
Rows Deep 1 2 3 4
Face Area - square feet 3.0
TABLE 13: ELECTRICAL DATA - OUTDOOR UNIT
Model
EFB
Compressor Outdoor Fan Motor Min.
Circuit
Amps
Max.
Fuse
Size
Min. Wire
Size,1
AWG
Power
Supply RLA LRA Power Factor
Power
Supply Qty. FLA (Each)
090A 25 200/230-3-60 25.6 190.0 0.94 @ 208V 208/230-1-60 2 3.03 38.1 60 8 0.84 @ 230V
46 460-3-60 12.8 95.0 0.86 460-1-60 2 1.6 19.2 30 10
1Based on three, 60ºC insulated copper conductors in steel conduit.
TABLE 14: INDOOR UNIT - HEAT PUMP ONLY
Blower
Motor
HP
Power
Supply FLA
Max. Fuse
Size,1
AMPS
1Dual element, time delay fuses.
FA090
1-1/2
208-3-60 5.2 15
230-3-60 5.0 15
460-3-60 2.6 15
TABLE 15: CONTROL WIRE SIZING
Wire Size Max. Total
Circuit Length, (Ft.)
#19 Solid 130
#18 Solid 170
#18 Stranded 180
#16 Stranded 270
#14 Stranded 455
#12 Stranded 730

036-21371-001-B-0203
18 Unitary Products Group
TABLE 16: HEAT PUMP WITH ELECTRIC HEAT1
Nominal
Heater
KW2
Power Supply Heater
FLA
Total Unit
Ampacity
AMPS
Max, Fuse
Size,3
AMPS
Min. Wire
Size,4
AWG
FA090
10
208-3-60 20.8 31.3 35 8
230-3-60 24.1 35.1 40 8
460-3-60 12.0 17.6 20 12
16
208-3-60 33.4 46.9 50 8
230-3-60 38.5 53.1 60 6
460-3-60 19.2 26.7 30 10
26
208-3-60 54.2 73 80 4
230-3-60 62.5 83.2 90 4
460-3-60 31.3 41.7 45 8
36
208-3-60 75.1 99 110 3
230-3-60 86.6 113.3 125 2
460-3-60 43.3 56.7 60 6
1Unit with an electric heat accessory will always be wired for a single power supply.
2Refer to the Heating Capacity table for the actual KW and MBH ratings of each heater at the different voltages.
3Inverse time circuit breakers may be used in lieu of dual element, time delay fuses.
4Based on three, insulated copper conductors in steel conduit: 60ºC wire when the total unit ampacity is below 100 amps; 75ºC
wire when the total unit ampacity is 100 amps and above.

036-21371-001-B-0203
Unitary Products Group 19

Subject to change without notice. Printed in U.S.A. 036-21371-001-B-0203
Copyright © by Unitary Products Group 42003. All rights reserved. Supersedes: 036-21371-001-A-0402
Unitary 5005 Norman
Products York OK
Group Drive 73069