Bard W3SACD Wall Mount Air Conditioner Dehumidification Instructions

W3SACD Wall Mount Air Conditioner Dehumidification
Supplemental Instructions
Models:
W3SACD W4SACD W5SACD

This model provides a unique dehumidification circuit for periods of low outdoor ambient temperature and high indoor humidity conditions.
Refer to Specification Sheet S3598 for the standard features of the base units and this manual for electrical data.

Dehumidification Circuit

The dehumidification circuit incorporates an independent heat exchanger coil in the supply air stream. This coil reheats the supply air after it passes over the cooling coil without requiring the electric resistance heater to be used for reheat purposes. This results in very high mechanical dehumidification capability from the air conditioner on demand without using electric resistance reheat.
The dehumidification refrigerant reheat circuit is controlled by a dehumidification valve directing the refrigerant gas to the normal condenser during periods when standard air conditioning is required. During periods of high indoor humidity, a humidistat senses the need for mechanical dehumidification.
It then energizes both the compressor circuit and the dehumidification valve, thus directing the hot refrigerant discharge gas into a separate desuperheating condenser circuit, which reheats the conditioned air before it is delivered to the room. The refrigerant gas is then routed from the desuperheating condenser to the system condenser for further heat transfer. When the humidistat is satisfied, the system automatically switches back to normal A/C mode and either continue to operate or turns off based on the signal from the wall thermostat. The result is separate humidity control at minimum operating cost.

Dehumidification Sequence of Operation

Dehumidification is controlled through the thermostat (if capable) or through a separate humidistat. On a call for a dehumidification mode of operation, the compressor and dehumidification valve of the unit are energized through circuits R – D to provide dehumidification.
Dehumidification will continue until the humidistat is satisfied.
A cooling call takes precedence over a dehumidification call as long as the cooling call is present. A heating call takes precedence over a dehumidification call as long as the heating call is present.
NOTE: When using dehumidification with a DDC control system, make sure that the D terminal is continually energized as long as humidity levels are above the desired setpoint. The unit controls will ensure that an additional call for cooling or heating will take precedence over a call for dehumidification when needed. If the D terminal is de-energized during the call for cooling or heating, a time delay will occur before the unit operation will continue when the D terminal is re-energized after the cooling or heating call is satisfied.
Refer to the table on page 9 for a full list of outputs that can be expected for different input combinations.

Balanced ClimateTM Mode

It is recommended to enable Balanced Climate mode and utilize a 3-stage thermostat to enhance the dehumidification performance and comfort. To activate this mode, the jumper between Y2 and Y3 on the low voltage terminal strip needs to be removed. Refer to the unit wiring diagram for clarity.
This mode will allow the indoor blower to run at a reduced airflow on the second stage of cooling. A 3-stage thermostat connected to Y3 will then allow the airflow to return to normal rated speed if the call for dehumidification or cooling is not satisfied within the allotted time frame specified by the thermostat. See latest revision of unit installation instructions 2100720 for more information regarding the Balanced Climate operation.

Application Considerations

To operate in low outdoor temperatures, a low ambient control (LAC) will need to be installed on the unit. This helps maintain system pressures during both cooling and   ehumidification operation. It is also important to keep the evaporator drain line in a space that will keep it from freezing. Often the drain is run through the back of the unit and into the indoor space where it can be collected. Heavy moisture applications will require frequent air filter changes. Be sure to check filters on a regular basis and start a routine filter change process.

Electronic Expansion Valve

This model employs an electronic expansion valve (EEV) which meters the refrigerant to the evaporator. The EEV is made of a stepper motor that is controlled with a step output from the controller. The valve is capable of 480 steps which drives a needle valve that in turn regulates the flow of refrigerant. The EEV allows for tighter control and better capacity management in varying operating conditions than a standard TXV. The EEV system consists of the electronic valve and stator, control board, relay, suction temperature sensor, and suction pressure transducer. The pressure transducer and temperature sensor monitor the suction line to provide real-time data to the control board so that a real-time superheat can be calculated. This then determines the EEV position.
The controller is sent to maintain around 13° superheat.
The relay is used to activate the EEV system’s controller anytime the compressor is energized.

WARNING/AVERTISSEMENT

• Exposure to high-pressure refrigerant hazards.
• This unit is equipped with an electronic expansion valve. In order to fully recover refrigerant or evacuate the system during repairs, be sure to use service tool 2151-021 to manually open the electronic expansion valve or be sure to recover and evacuate from all service ports; suction, liquid, and discharge.
• Failure to do so could result in eye injuries and/or refrigerant burns.
  

EEV Instructions for Vacuuming, Reclaiming, and Charging Unit

The electronic expansion valve moves to a closed position when there is no call to control. In order to pull a complete vacuum, fully reclaim the system, or charge the unit, connections to both the suction and discharge service ports need to be utilized or the valve needs to be manually opened first. The valve can be opened manually using the magnetic EEV service tool (Bard Part # 2151-021) shown in Figure 1. To do this, remove the EEV stator coil (red color with retaining nut on top), slide the magnetic tool over the shaft where the stator was removed, and turn in a clockwise direction to open the valve to the fully open position (directional arrows are provided on the tool).
Reapply the EEV stator coil and retaining nut once complete. Upon powering the unit back up, the control board will automatically drive the EEV back to the fully shut position. Once the compressor starts, the control board will again modulate the EEV position to control the system superheat.

FIGURE 1
Electronic Expansion Valve (EEV) and Service Tool

Troubleshooting the Electronic Expansion Valve

The control board has two status LEDs.

• The green LED should be lit anytime that the board has power and the control is functioning.
• The red LED is to show that an alarm is present.
  See Table 1 for a guide to know where to start troubleshooting the EEV. Refer to the appropriate unit replacement parts manual for any parts that are needed.

Control Board
Check that the controller is getting a 24VAC signal (GO 24VAC Hot and G 24VAC common). Reference unit wiring diagram for proper connections. If 24V is present but the green LED is not lit, replace the controller. If the green LED is now lit but the superheat is still not being maintained, troubleshoot the relay to check that the DI is connected to G; refer to Relay in EEV Control Box on page 3.

TABLE 1
Electronic Expansion Valve Troubleshooting

Board
The green LED is lit, but superheat is not being maintained.| The relay is not closing the controller’s DI connection to the ground.| Relay
The red LED is flashing and EEV is not controlling superheat properly (13° superheat). One of the following is likely the fault:
1. Low superheat is detected and the controller is taking steps to protect the system by closing the valve.| The stator is broken or connected incorrectly.| Stator
The valve is stuck open.| EEV Valve
2. Suction temperature sensor error.| Poor connection of sensor or faulty sensor.| Thermistor
3. Suction pressure transducer error.| Pressure transducer wiring incorrect or faulty transducer.| Transducer
The red LED is on steady.| The operating parameters have been damaged.| Replace Control Board

Electronic Expansion Valve
Check to see if valve can be moved by manually moving the stepper motor using the EEV service tool shown in Figure 1 (Bard Part # 2151-021). If valve still does not control, check the transducer and thermistor sensors as described on page 4. If sensors are good, replace the valve.
Relay in EEV Control Box
Contacts NO to DI and COM to G must be closed for EEV control to start controlling superheat. Check that the relay is getting 24VAC. Reference unit wiring diagram for proper connections. If 24V is present, measure the resistance between COM and NO; it should be 0 ohms when the relay is getting 24V. If the resistance is out of range, replace the relay.
Stator Coil
Disconnect the stator from the valve and the control and measure the resistance of the windings using an electrical tester. The resistance of both windings should be around 40 ohms +/– 10%. The four wire sets that will have resistance between them are: White and red, green and red, yellow and purple, blue and purple. If the resistance falls outside these values, replace the stator.
Transducer Sensor

1. Check continuity of all three wires from transducer plug to controller plug. Replace wires if poor connection in any wire.

2. Check to ensure wires are correctly connected as follows:
   Blue wire = pin 1 of controller plug to pin C on transducer plug
   Red wire = pin 2 of controller plug to pin B on transducer plug
   Black wire = pin 3 of controller plug to pin A on transducer plug

3. Check that there is a 5VDC Nominal between the red and black wires going to the transducer.

4. Check the signal voltage between the blue and black wires (0.5-4.5VDC Actual). The following formula and Figure 2 can be used to determine if the transducer’s voltage to pressure ratio is within range. Replace transducer if out of range.

The formula for Tech:
(Measured Pressure x .016) + 0.5 =   Expected Transducer Signal Voltage (see Figure 2).

FIGURE 2
Voltage to Pressure: Suction Pressure Transducer

Thermistor Sensor

1. Make a visual check for broken wire insulation, broken wires, or cracked epoxy material.
2. Disconnect the 10k ohm NTC thermistor from the EEV control box.
3. Use an ohmmeter to measure the resistance between the two connectors. Also, use an ohmmeter to check for short or open.
4. Compare the resistance reading to Table 2. Use sensor ambient temperature. (Tolerance of part is ±10 %.)
5. If the sensor is out of tolerance, shorted, open, or reads very low ohms, it should be replaced.

TABLE 2
10K Ohm NTC Sensor: Temperature/Resistance

Temperature| Resistance| | Temperature| Resistance| | Temperature| Resistance| | Temperature| Resistance
---|---|---|---|---|---|---|---|---|---|---
F| C| Ω| F| C| Ω| F| C| Ω| F| C| Ω
-40| -40| 188,500| 28.4| -2| 29,730| 96.8| 36| 6,700| 165.2| 74| 1,980
-38.2| -39| 178,500| 30.2| -1| 28,480| 98.6| 37| 6,470| 167| 75| 1,920
-36.4| -38| 169,000| 32| 0| 27,280| 100.4| 38| 6,250| 168.8| 76| 1,870
-34.6| -37| 160,200| 33.8| 1| 26,130| 102.2| 39| 6,030| 170.6| 77| 1,820
-32.8| -36| 151,900| 35.6| 2| 25,030| 104| 40| 5,830| 172.4| 78| 1,770
-31| -35| 144,100| 37.4| 3| 23,990| 105.8| 41| 5,630| 174.2| 79| 1,920
-29.2| -34| 136,700| 39.2| 4| 23,000| 107.6| 42| 5,440| 176| 80| 1,670
-27.4| -33| 129,800| 41| 5| 22,050| 109.4| 43| 5,260| 177.8| 81| 1,620
-25.6| -32| 123,300| 42.8| 6| 21,150| 111.2| 44| 5,080| 179.6| 82| 1,580
-23.8| -31| 117,100| 44.6| 7| 20,300| 113| 45| 4,910| 181.4| 83| 1,530
-22| -30| 111,300| 46.4| 8| 19,480| 114.8| 46| 4,750| 183.2| 84| 1,490
-20.2| -29| 105,700| 48.2| 9| 18,700| 116.6| 47| 4,590| 185| 85| 1,450
-18.4| -28| 100,500| 50| 10| 17,960| 118.4| 48| 4,440| 186.8| 86| 1,441
-16.6| -27| 95,520| 51.8| 11| 17,240| 120.2| 49| 4,300| 188.6| 87| 1,370
-14.8| -26| 90,840| 53.6| 12| 16,560| 122| 50| 4,160| 190.4| 88| 1,340
-13| -25| 86,430| 55.4| 13| 15,900| 123.8| 51| 4,030| 192.2| 89| 1,300
-11.2| -24| 82,260| 57.2| 14| 15,280| 125.6| 52| 3,900| 194| 90| 1,270
-9.4| -23| 78,330| 59| 15| 14,690| 127.4| 53| 3,770| 195.8| 91| 1,230
-7.6| -22| 74,610| 60.8| 16| 14,120| 129.2| 54| 3,650| 197.6| 92| 1,200
-5.8| -21| 71,100| 62.6| 17| 13,580| 131| 55| 3,540| 199.4| 93| 1,170
-4| -20| 67,770| 64.4| 18| 13,060| 132.8| 56| 3,430| 201.2| 94| 1,140
-2.2| -19| 64,570| 66.2| 19| 12,560| 134.6| 57| 3,320| 203| 95| 1,110
-0.4| -18| 61,540| 68| 20| 12,090| 136.4| 58| 3,220| 204.8| 96| 1,080
1.4| -17| 58,680| 69.8| 21| 11,630| 138.2| 59| 3,120| 206.6| 97| 1,050
3.2| -16| 55,970| 71.6| 22| 11,200| 140| 60| 3,020| 208.4| 98| 1,020
5| -15| 53,410| 73.4| 23| 10,780| 141.8| 61| 2,930| 210.2| 99| 1,000
6.8| -14| 50,980| 75.2| 24| 10,380| 143.6| 62| 2,840| 212| 100| 970
8.6| -13| 48,680| 77| 25| 10,000| 145.4| 63| 2,750|
10.4| -12| 46,500| 78.8| 26| 9,630| 147.2| 64| 2,670
12.2| -11| 44,430| 80.6| 27| 9,280| 149| 65| 2,590
14| -10| 42,470| 82.4| 28| 8,940| 150.8| 66| 2,510
15.8| -9| 40,570| 84.2| 29| 8,620| 152.6| 67| 2,440
17.6| -8| 38,770| 86| 30| 8,310| 154.4| 68| 2,360
19.4| -7| 37,060| 87.8| 31| 8,010| 156.2| 69| 2,300
21.2| -6| 35,440| 89.6| 32| 7,730| 158| 70| 2,230
23| -5| 33,900| 91.4| 33| 7,450| 159.8| 71| 2,160
24.8| -4| 32,440| 93.2| 34| 7,190| 161.6| 72| 2,100
26.6| -3| 31,050| 95| 35| 6,940| 163.4| 73| 2,040

W3SACD Cooling and Dehumidification Application Data1

DB/WB 2| OD Temp.| 65°F 3| 70°F| 75°F| 80°F| 85°F| 90°F| 95°F| 100°F| 105°F
---|---|---|---|---|---|---|---|---|---|---
Mode| A/C| Dehum| A/C| Dehum| A/C| Dehum| A/C| Dehum| A/C| Dehum| A/C| Dehum| A/C| Dehum| A/C| Dehum| A/C| Dehum

75/62.5 (50% RH)

| Total Cooling Btuh| 40,200| 20,400| 39,200| 17,900| 38,100| 15,100| 37,000| 12,600| 35,700| 9,700| 34,400| 6,800| 33,000| 3,700| 31,600| 600| 30,000|
Sensible Btuh| 29,500| 5,300| 29,000| 3,300| 28,500| 1,500| 28,000| (800)| 27,400| (2,800)| 26,800| (4,900)| 26,200| (7,000)| 25,600| (9,200)| 24,900| (11,300)
S/T| 0.734| 0.260| 0.740| 0.184| 0.748| 0.099| 0.757| 0| 0.768| 0| 0.779| 0| 0.794| 0| 0.810| 0| 0.830| 0
Latent Btuh| 10,700| 15,100| 10,200| 14,600| 9,600| 13,600| 9,000| 13,400| 8,300| 12,500| 7,600| 11,700| 6,800| 10,700| 6,000| 9,800| 5,100| 8,600
Lbs. H20/hr.| 10.1| 14.2| 9.6| 13.8| 9.1| 12.8| 8.5| 12.6| 7.8| 11.8| 7.2| 11.0| 6.4| 10.1| 5.7| 9.2| 4.8| 8.1
Supply Air DB| 51.4| 64.9| 51.8| 67.2| 51.9| 69.4| 52.7| 71.8| 53.2| 74.2| 53.7| 76.6| 54.2| 79.0| 54.7| 81.4| 55.2| 83.9
Supply Air WB| 50.2| 54.0| 50.6| 55.2| 50.6| 56.2| 51.4| 57.6| 51.8| 58.8| 52.3| 60.0| 52.7| 61.2| 53.1| 62.4| 53.6| 63.6
Suction PSIG4| 123| 114| 124| 115| 125| 117| 126| 119| 128| 120| 129| 122| 130| 124| 131| 127| 133| 129
Discharge PSIG4| 258| 234| 278| 248| 298| 263| 319| 278| 341| 294| 365| 312| 389| 329| 415| 348| 442| 367

75/64.1 (55% RH)

| Total Cooling Btuh| 41,200| 21,600| 40,200| 19,200| 39,100| 16,500| 37,900| 13,800| 36,700| 11,000| 35,300| 8,100| 34,000| 5,000| 32,500| 1,800| 30,900|
Sensible Btuh| 27,800| 7,900| 27,300| 5,900| 26,800| 3,900| 26,300| 1,900| 25,700| (200)| 25,100| (2,300)| 24,500| (4,400)| 23,900| (6,600)| 23,200| (8,700)
S/T| 0.675| 0.37| 0.679| 0.31| 0.685| 0.24| 0.694| 0.14| 0.700| 0| 0.711| 0| 0.721| 0| 0.735| 0| 0.751| 0
Latent Btuh| 13,400| 13,700| 12,900| 13,300| 12,300| 12,600| 11,600| 11,900| 11,000| 11,200| 10,200| 10,400| 9,500| 9,400| 8,600| 8,400| 7,700| 7,200
Lbs. H20/hr.| 12.6| 12.9| 12.2| 12.5| 11.6| 11.9| 10.9| 11.2| 10.4| 10.6| 9.6| 9.8| 9.0| 8.9| 8.1| 7.9| 7.3| 6.8
Supply Air DB| 52.7| 65.9| 53.1| 68.2| 53.6| 70.5| 54.0| 72.9| 54.5| 75.2| 55.0| 77.6| 55.5| 80.0| 56.0| 82.5| 56.5| 85.0
Supply Air WB| 51.6| 55.0| 52.0| 56.3| 52.4| 57.5| 52.8| 58.7| 53.3| 59.9| 53.7| 61.1| 54.1| 62.3| 54.6| 63.4| 55.0| 64.6
Suction PSIG4| 126| 117| 127| 118| 128| 120| 129| 121| 130| 123| 132| 125| 133| 127| 134| 129| 135| 132
Discharge PSIG4| 260| 236| 279| 250| 299| 265| 321| 281| 343| 297| 367| 314| 391| 332| 417| 350| 443| 370

75/65.5 (60% RH)

| Total Cooling Btuh| 42,100| 22,900| 41,100| 20,400| 40,000| 17,700| 38,800| 15,100| 37,600| 12,300| 36,300| 9,300| 34,900| 6,200| 33,400| 3,100| 31,900|
Sensible Btuh| 26,100| 10,500| 25,700| 8,500| 25,100| 6,700| 24,600| 4,500| 24,000| 2,400| 23,400| 300| 22,800| (1,800)| 22,200| (3,900)| 21,500| (6,100)
S/T| 0.620| 0.459| 0.625| 0.417| 0.628| 0.379| 0.634| 0.298| 0.638| 0.195| 0.645| 0.032| 0.653| 0| 0.665| 0| 0.674| 0
Latent Btuh| 16,000| 12,400| 15,400| 11,900| 14,900| 11,000| 14,200| 10,600| 13,600| 9,900| 12,900| 9,000| 12,100| 8,000| 11,200| 7,000| 10,400| 5,900
Lbs. H20/hr.| 15.1| 11.7| 14.5| 11.2| 14.1| 10.4| 13.4| 10.0| 12.8| 9.3| 12.2| 8.5| 11.4| 7.5| 10.6| 6.6| 9.8| 5.6
Supply Air DB| 54.0| 67.0| 54.4| 69.3| 54.5| 71.4| 55.3| 73.9| 55.8| 76.3| 56.3| 78.7| 56.8| 81.1| 57.3| 83.5| 57.8| 86.0
Supply Air WB| 53.1| 56.1| 53.5| 57.3| 53.5| 58.3| 54.3| 59.7| 54.7| 60.9| 55.1| 62.1| 55.6| 63.3| 56.0| 64.5| 56.5| 65.7
Suction PSIG4| 128| 120| 130| 121| 130| 123| 132| 124| 133| 126| 134| 128| 136| 130| 137| 132| 138| 134
Discharge PSIG4| 262| 239| 281| 253| 301| 268| 322| 283| 345| 299| 368| 317| 393| 334| 418| 353| 445| 372

75/66.7 (65% RH)

| Total Cooling Btuh| 43,000| 24,100| 42,000| 21,700| 40,900| 18,900| 39,800| 16,300| 38,500| 13,500| 37,200| 10,600| 35,800| 7,500| 34,300| 4,300| 32,800| 1,000
Sensible Btuh| 24,500| 13,200| 24,000| 11,200| 23,500| 9,300| 22,900| 7,100| 22,300| 5,000| 21,800| 2,900| 21,100| 800| 20,500| (1,300)| 19,900| (3,500)
S/T| 0.570| 0.55| 0.571| 0.52| 0.575| 0.49| 0.575| 0.44| 0.579| 0.37| 0.586| 0.27| 0.589| 0.11| 0.598| 0| 0.607| 0
Latent Btuh| 18,500| 10,900| 18,000| 10,500| 17,400| 9,600| 16,900| 9,200| 16,200| 8,500| 15,400| 7,700| 14,700| 6,700| 13,800| 5,600| 12,900| 4,500
Lbs. H20/hr.| 17.5| 10.3| 17.0| 9.9| 16.4| 9.1| 15.9| 8.7| 15.3| 8.0| 14.5| 7.3| 13.9| 6.3| 13.0| 5.3| 12.2| 4.2
Supply Air DB| 55.3| 68.0| 55.8| 70.3| 55.9| 72.5| 56.7| 74.9| 57.1| 77.3| 57.6| 79.7| 58.1| 82.1| 58.6| 84.6| 59.1| 87.0
Supply Air WB| 54.5| 57.1| 54.9| 58.4| 54.9| 59.3| 55.7| 60.8| 56.1| 62.0| 56.6| 63.2| 57.0| 64.4| 57.5| 65.5| 57.9| 66.7
Suction PSIG4| 131| 122| 132| 124| 133| 125| 135| 127| 136| 129| 137| 131| 138| 133| 140| 135| 141| 137
Discharge PSIG4| 263| 241| 282| 255| 303| 270| 324| 286| 346| 302| 370| 319| 394| 337| 420| 355| 447| 375

75/68 (70% RH)

| Total Cooling Btuh| 44,000| 25,400| 43,000| 22,900| 41,800| 20,200| 40,700| 17,600| 39,500| 14,800| 38,100| 11,800| 36,700| 8,800| 35,300| 5,600| 33,700| 2,300
Sensible Btuh| 22,800| 15,800| 22,300| 13,800| 21,800| 12,000| 21,200| 9,700| 20,600| 7,700| 20,100| 5,600| 19,500| 3,400| 18,800| 1,300| 18,200| (900)
S/T| 0.518| 0.622| 0.519| 0.603| 0.522| 0.594| 0.521| 0.551| 0.522| 0.520| 0.528| 0.475| 0.531| 0.386| 0.533| 0.232| 0.540| 0
Latent Btuh| 21,200| 9,600| 20,700| 9,100| 20,000| 8,200| 19,500| 7,900| 18,900| 7,100| 18,000| 6,200| 17,200| 5,400| 16,500| 4,300| 15,500| 3,200
Lbs. H20/hr.| 20.0| 9.1| 19.5| 8.6| 18.9| 7.7| 18.4| 7.5| 17.8| 6.7| 17.0| 5.8| 16.2| 5.1| 15.6| 4.1| 14.6| 3.0
Supply Air DB| 56.6| 69.1| 57.1| 71.3| 57.2| 73.5| 58.0| 76.0| 58.5| 78.3| 58.9| 80.7| 59.4| 83.2| 59.9| 85.6| 60.4| 88.1
Supply Air WB| 55.9| 58.2| 56.3| 59.4| 56.4| 60.4| 57.2| 61.8| 57.6| 63.0| 58.0| 64.2| 58.5| 65.4| 58.9| 66.6| 59.3| 67.7
Suction PSIG4| 134| 125| 135| 127| 136| 128| 138| 130| 139| 132| 140| 134| 141| 136| 143| 138| 144| 140
Discharge PSIG4| 265| 244| 284| 258| 304| 273| 325| 288| 348| 304| 371| 322| 396| 339| 421| 358| 448| 377

80/68.3 (55% RH)

| Total Cooling Btuh| 59,000| 26,200| 58,000| 23,700| 56,800| 21,000| 55,700| 18,400| 54,500| 15,600| 53,200| 12,600| 51,800| 9,600| 50,300| 6,400| 48,800| 3,100
Sensible Btuh| 28,400| 2,800| 27,900| 800| 27,400| (1,000)| 26,800| (3,200)| 26,300| (5,300)| 25,700| (7,400)| 25,100| (9,500)| 24,400| (11,600)| 23,800| (13,800)
S/T| 0.481| 0.11| 0.481| 0.03| 0.482| 0| 0.481| 0| 0.483| 0| 0.483| 0| 0.485| 0| 0.485| 0| 0.488| 0
Latent Btuh| 30,600| 23,400| 30,100| 22,900| 29,400| 22,000| 28,900| 21,600| 28,200| 20,900| 27,500| 20,000| 26,700| 19,100| 25,900| 18,000| 25,000| 16,900
Lbs. H20/hr.| 28.9| 22.1| 28.4| 21.6| 27.7| 20.8| 27.3| 20.4| 26.6| 19.7| 25.9| 18.9| 25.2| 18.0| 24.4| 17.0| 23.6| 15.9
Supply Air DB| 55.3| 69.6| 55.7| 71.9| 55.8| 74.0| 56.6| 76.5| 57.1| 78.9| 57.6| 81.3| 58.1| 83.7| 58.6| 86.1| 59.1| 88.6
Supply Air WB| 55.0| 58.2| 55.4| 59.4| 55.5| 60.4| 56.3| 61.8| 56.7| 63.0| 57.1| 64.2| 57.5| 65.4| 58.0| 66.6| 58.4| 67.7
Suction PSIG4| 134| 126| 136| 127| 136| 129| 138| 130| 139| 132| 140| 134| 142| 136| 143| 138| 144| 141
Discharge PSIG4| 264| 243| 283| 257| 304| 272| 325| 288| 347| 304| 370| 321| 395| 339| 421| 357| 447| 377

1. V values listed are with ventilation package disabled
2. Return air temperature °F @ Default airflow (1150 CFM) for AC tests and Balanced Climate airflow (805 CFM) for dehumidification tests
3. Below 50°F, the unit requires a factory or field installed with low ambient control.
4. Suction pressure +/- 4 psi, Discharge pressure +/- 10 psi

W4SACD Cooling and Dehumidification Application Data1

DB/WB 2| OD Temp.| 65°F 3| 70°F| 75°F| 80°F| 85°F| 90°F| 95°F| 100°F| 105°F
---|---|---|---|---|---|---|---|---|---|---
Mode| A/C| Dehum| A/C| Dehum| A/C| Dehum| A/C| Dehum| A/C| Dehum| A/C| Dehum| A/C| Dehum| A/C| Dehum| A/C| Dehum

75/62.5 (50% RH)

| Total Cooling Btuh| 52,500| 25,400| 51,000| 22,900| 49,500| 19,500| 48,000| 17,000| 46,500| 13,700| 44,900| 10,100| 43,400| 6,300| 41,900| 2,200| 40,300|
Sensible Btuh| 39,600| 11,000| 39,000| 8,900| 38,300| 6,700| 37,600| 4,400| 36,900| 2,000| 36,200| (400)| 35,500| (3,000)| 34,800| (5,600)| 34,100| (8,200)
S/T| 0.754| 0.433| 0.765| 0.389| 0.774| 0.344| 0.783| 0.259| 0.794| 0.146| 0.806| 0| 0.818| 0| 0.831| 0| 0.846| 0
Latent Btuh| 12,900| 14,400| 12,000| 14,000| 11,200| 12,800| 10,400| 12,600| 9,600| 11,700| 8,700| 10,500| 7,900| 9,300| 7,100| 7,800| 6,200| 6,100
Lbs. H20/hr.| 12.2| 13.6| 11.3| 13.2| 10.6| 12.1| 9.8| 11.9| 9.1| 11.0| 8.2| 9.9| 7.5| 8.8| 6.7| 7.4| 5.8| 5.8
Supply Air DB| 52.2| 65.5| 52.6| 67.5| 52.9| 69.4| 53.5| 71.5| 53.9| 73.6| 54.4| 75.7| 54.8| 77.9| 55.2| 80.2| 55.6| 82.6
Supply Air WB| 51.0| 54.3| 51.4| 55.3| 51.6| 56.3| 52.2| 57.3| 52.6| 58.4| 52.9| 59.5| 53.3| 60.7| 53.6| 62.0| 54.0| 63.3
Suction PSIG4| 125| 114| 126| 115| 127| 116| 128| 118| 129| 119| 130| 121| 131| 124| 133| 126| 134| 129
Discharge PSIG4| 284| 253| 304| 266| 324| 280| 346| 296| 369| 312| 393| 329| 418| 346| 443| 364| 470| 383

75/64.1 (55% RH)

| Total Cooling Btuh| 53,700| 26,900| 52,200| 24,400| 50,700| 21,600| 49,200| 18,500| 47,600| 15,200| 46,100| 11,600| 44,600| 7,800| 43,000| 3,700| 41,500|
Sensible Btuh| 37,500| 9,900| 36,800| 7,800| 36,100| 5,500| 35,400| 3,200| 34,700| 900| 34,000| (1,600)| 33,300| (4,100)| 32,600| (6,700)| 31,900| (9,400)
S/T| 0.698| 0.37| 0.705| 0.32| 0.712| 0.25| 0.720| 0.17| 0.729| 0.06| 0.738| 0| 0.747| 0| 0.758| 0| 0.769| 0
Latent Btuh| 16,200| 17,000| 15,400| 16,600| 14,600| 16,100| 13,800| 15,300| 12,900| 14,300| 12,100| 13,200| 11,300| 11,900| 10,400| 10,400| 9,600| 8,800
Lbs. H20/hr.| 15.3| 16.0| 14.5| 15.7| 13.8| 15.2| 13.0| 14.4| 12.2| 13.5| 11.4| 12.5| 10.7| 11.2| 9.8| 9.8| 9.1| 8.3
Supply Air DB| 53.5| 66.6| 53.9| 68.5| 54.3| 70.5| 54.8| 72.5| 55.2| 74.6| 55.6| 76.8| 56.0| 79.0| 56.4| 81.3| 56.8| 83.6
Supply Air WB| 52.4| 55.4| 52.8| 56.4| 53.2| 57.4| 53.6| 58.4| 54.0| 59.5| 54.3| 60.6| 54.7| 61.8| 55.1| 63.1| 55.4| 64.4
Suction PSIG4| 128| 117| 129| 118| 130| 119| 131| 121| 132| 122| 133| 124| 134| 127| 136| 129| 137| 132
Discharge PSIG4| 286| 256| 306| 269| 327| 284| 349| 299| 371| 315| 395| 332| 420| 349| 445| 367| 472| 386

75/65.5 (60% RH)

| Total Cooling Btuh| 54,800| 28,400| 53,400| 25,900| 51,900| 22,500| 50,300| 20,000| 48,800| 16,700| 47,300| 13,100| 45,800| 9,300| 44,200| 5,200| 42,700| 900
Sensible Btuh| 35,300| 8,800| 34,600| 6,600| 34,000| 4,500| 33,300| 2,100| 32,600| (300)| 31,900| (2,700)| 31,200| (5,200)| 30,500| (7,800)| 29,800| (10,500)
S/T| 0.644| 0.310| 0.648| 0.255| 0.655| 0.200| 0.662| 0.105| 0.668| 0| 0.674| 0| 0.681| 0| 0.690| 0| 0.698| 0
Latent Btuh| 19,500| 19,600| 18,800| 19,300| 17,900| 18,000| 17,000| 17,900| 16,200| 17,000| 15,400| 15,800| 14,600| 14,500| 13,700| 13,000| 12,900| 11,400
Lbs. H20/hr.| 18.4| 18.5| 17.7| 18.2| 16.9| 17.0| 16.0| 16.9| 15.3| 16.0| 14.5| 14.9| 13.8| 13.7| 12.9| 12.3| 12.2| 10.8
Supply Air DB| 54.7| 67.7| 55.2| 69.6| 55.4| 71.5| 56.0| 73.6| 56.5| 75.7| 56.9| 77.9| 57.3| 80.1| 57.7| 82.4| 58.1| 84.7
Supply Air WB| 53.8| 56.5| 54.2| 57.5| 54.4| 58.4| 55.0| 59.5| 55.4| 60.6| 55.7| 61.7| 56.1| 62.9| 56.5| 64.2| 56.8| 65.4
Suction PSIG4| 131| 120| 132| 121| 133| 122| 134| 123| 135| 125| 136| 127| 137| 130| 139| 132| 140| 135
Discharge PSIG4| 288| 259| 308| 272| 329| 286| 351| 302| 373| 318| 397| 335| 422| 352| 447| 370| 474| 389

75/66.7 (65% RH)

| Total Cooling Btuh| 56,000| 29,900| 54,500| 27,400| 53,000| 24,000| 51,500| 21,500| 50,000| 18,200| 48,500| 14,600| 46,900| 10,800| 45,400| 6,700| 43,800| 2,400
Sensible Btuh| 33,200| 7,600| 32,500| 5,500| 31,800| 3,400| 31,100| 1,000| 30,400| (1,400)| 29,700| (3,800)| 29,000| (6,400)| 28,300| (9,000)| 27,600| (11,600)
S/T| 0.593| 0.25| 0.596| 0.20| 0.600| 0.14| 0.604| 0.05| 0.608| 0| 0.612| 0| 0.618| 0| 0.623| 0| 0.630| 0
Latent Btuh| 22,800| 22,300| 22,000| 21,900| 21,200| 20,600| 20,400| 20,500| 19,600| 19,600| 18,800| 18,400| 17,900| 17,200| 17,100| 15,700| 16,200| 14,000
Lbs. H20/hr.| 21.5| 21.0| 20.8| 20.7| 20.0| 19.4| 19.2| 19.3| 18.5| 18.5| 17.7| 17.4| 16.9| 16.2| 16.1| 14.8| 15.3| 13.2
Supply Air DB| 56.0| 68.8| 56.4| 70.7| 56.7| 72.6| 57.3| 74.7| 57.7| 76.8| 58.1| 78.9| 58.6| 81.2| 59.0| 83.4| 59.3| 85.8
Supply Air WB| 55.2| 57.6| 55.6| 58.5| 55.8| 59.5| 56.4| 60.6| 56.8| 61.7| 57.2| 62.8| 57.5| 64.0| 57.9| 65.2| 58.2| 66.5
Suction PSIG4| 134| 123| 135| 124| 136| 125| 137| 126| 138| 128| 139| 130| 140| 133| 142| 135| 144| 138
Discharge PSIG4| 290| 262| 310| 275| 331| 289| 353| 305| 375| 321| 399| 337| 424| 355| 449| 373| 476| 392

75/68 (70% RH)

| Total Cooling Btuh| 57,200| 31,400| 55,700| 28,900| 54,200| 25,500| 52,700| 23,000| 51,200| 19,700| 49,600| 16,100| 48,100| 12,300| 46,600| 8,200| 45,000| 3,900
Sensible Btuh| 31,000| 6,500| 30,300| 4,400| 29,700| 2,200| 29,000| (100)| 28,300| (2,500)| 27,600| (5,000)| 26,900| (7,500)| 26,200| (10,100)| 25,500| (12,800)
S/T| 0.542| 0.207| 0.544| 0.152| 0.548| 0.086| 0.550| 0| 0.553| 0| 0.556| 0| 0.559| 0| 0.562| 0| 0.567| 0
Latent Btuh| 26,200| 24,900| 25,400| 24,500| 24,500| 23,300| 23,700| 23,100| 22,900| 22,200| 22,000| 21,100| 21,200| 19,800| 20,400| 18,300| 19,500| 16,700
Lbs. H20/hr.| 24.7| 23.5| 24.0| 23.1| 23.1| 22.0| 22.4| 21.8| 21.6| 20.9| 20.8| 19.9| 20.0| 18.7| 19.2| 17.3| 18.4| 15.8
Supply Air DB| 57.2| 69.8| 57.7| 71.8| 58.0| 73.7| 58.6| 75.8| 59.0| 77.9| 59.4| 80.0| 59.8| 82.2| 60.2| 84.5| 60.6| 86.9
Supply Air WB| 56.7| 58.7| 57.0| 59.6| 57.2| 60.6| 57.8| 61.6| 58.2| 62.7| 58.6| 63.9| 58.9| 65.1| 59.3| 66.3| 59.6| 67.6
Suction PSIG4| 137| 126| 138| 127| 139| 128| 140| 129| 141| 131| 142| 133| 143| 136| 145| 138| 147| 141
Discharge PSIG4| 293| 265| 312| 278| 333| 292| 355| 308| 377| 324| 401| 340| 426| 358| 452| 376| 478| 395

80/68.3 (55% RH)

| Total Cooling Btuh| 77,100| 32,400| 75,600| 29,800| 74,100| 26,500| 72,600| 24,000| 71,100| 20,600| 69,500| 17,100| 68,000| 13,300| 66,500| 9,200| 64,900| 4,900
Sensible Btuh| 38,200| 12,100| 37,500| 9,900| 36,800| 7,800| 36,100| 5,400| 35,400| 3,100| 34,700| 600| 34,000| (1,900)| 33,300| (4,500)| 32,600| (7,200)
S/T| 0.495| 0.37| 0.496| 0.33| 0.497| 0.29| 0.497| 0.23| 0.498| 0.15| 0.499| 0.04| 0.500| 0| 0.501| 0| 0.502| 0
Latent Btuh| 38,900| 20,300| 38,100| 19,900| 37,300| 18,700| 36,500| 18,600| 35,700| 17,500| 34,800| 16,500| 34,000| 15,200| 33,200| 13,700| 32,300| 12,100
Lbs. H20/hr.| 36.7| 19.2| 35.9| 18.8| 35.2| 17.6| 34.4| 17.5| 33.7| 16.5| 32.8| 15.6| 32.1| 14.3| 31.3| 12.9| 30.5| 11.4
Supply Air DB| 56.4| 70.4| 56.8| 72.3| 57.1| 74.2| 57.7| 76.3| 58.1| 78.4| 58.6| 80.5| 59.0| 82.8| 59.4| 85.1| 59.8| 87.4
Supply Air WB| 56.0| 58.7| 56.4| 59.6| 56.6| 60.6| 57.2| 61.6| 57.6| 62.7| 57.9| 63.9| 58.3| 65.1| 58.6| 66.3| 59.0| 67.6
Suction PSIG4| 138| 126| 139| 127| 139| 129| 140| 130| 141| 132| 143| 134| 144| 136| 145| 139| 147| 142
Discharge PSIG4| 291| 264| 311| 278| 332| 292| 354| 307| 376| 323| 400| 340| 425| 357| 450| 376| 477| 395

1. V values listed are with ventilation package disabled
2. Return air temperature °F @ Default airflow (1550 CFM) for AC tests and Balanced Climate airflow (1090 CFM) for dehumidification tests
3. Below 50°F, the unit requires a factory or field installed with low ambient control.
4. Suction pressure +/- 4 psi, Discharge pressure +/- 10 psi

W5SACD Cooling and Dehumidification Application Data1

DB/WB 2| OD Temp.| 65°F 3| 70°F| 75°F| 80°F| 85°F| 90°F| 95°F| 100°F| 105°F
---|---|---|---|---|---|---|---|---|---|---
Mode| A/C| Dehum| A/C| Dehum| A/C| Dehum| A/C| Dehum| A/C| Dehum| A/C| Dehum| A/C| Dehum| A/C| Dehum| A/C| Dehum

75/62.5 (50% RH)

| Total Cooling Btuh| 64,700| 33,600| 62,800| 30,600| 61,200| 27,300| 59,100| 24,200| 57,200| 20,700| 55,400| 17,100| 53,600| 13,300| 51,800| 9,400| 50,000| 5,300
Sensible Btuh| 47,700| 15,800| 46,900| 13,600| 46,200| 11,300| 45,300| 8,900| 44,400| 6,400| 43,600| 3,900| 42,800| 1,300| 41,900| (1,400)| 41,100| (4,200)
S/T| 0.737| 0.470| 0.747| 0.444| 0.755| 0.414| 0.766| 0.368| 0.776| 0.309| 0.787| 0.228| 0.799| 0| 0.809| 0| 0.822| 0
Latent Btuh| 17,000| 17,800| 15,900| 17,000| 15,000| 16,000| 13,800| 15,300| 12,800| 14,300| 11,800| 13,200| 10,800| 12,000| 9,900| 10,800| 8,900| 9,500
Lbs. H20/hr.| 16.0| 16.8| 15.0| 16.0| 14.2| 15.1| 13.0| 14.4| 12.1| 13.5| 11.1| 12.5| 10.2| 11.3| 9.3| 10.2| 8.4| 9.0
Supply Air DB| 50.8| 63.7| 51.3| 65.3| 51.7| 67.0| 52.2| 68.8| 52.6| 70.6| 53.1| 72.5| 53.5| 74.4| 53.9| 76.3| 54.3| 78.3
Supply Air WB| 50.0| 53.5| 50.4| 54.4| 50.8| 55.3| 51.2| 56.3| 51.7| 57.3| 52.1| 58.2| 52.4| 59.2| 52.8| 60.3| 53.2| 61.3
Suction PSIG4| 125| 115| 127| 116| 128| 117| 129| 119| 130| 120| 131| 121| 132| 122| 133| 124| 134| 125
Discharge PSIG4| 291| 269| 311| 283| 332| 297| 354| 312| 378| 328| 402| 345| 427| 362| 453| 380| 480| 398

75/64.1 (55% RH)

| Total Cooling Btuh| 66,200| 35,200| 64,300| 32,200| 62,400| 29,100| 60,500| 25,800| 58,700| 22,400| 56,800| 18,700| 55,000| 15,000| 53,200| 11,000| 51,400| 6,900
Sensible Btuh| 45,100| 14,300| 44,300| 12,000| 43,500| 9,700| 42,700| 7,300| 41,900| 4,900| 41,000| 2,300| 40,200| (300)| 39,300| (3,000)| 38,500| (5,700)
S/T| 0.681| 0.41| 0.689| 0.37| 0.697| 0.33| 0.706| 0.28| 0.714| 0.22| 0.722| 0.12| 0.731| 0| 0.739| 0| 0.749| 0
Latent Btuh| 21,100| 20,900| 20,000| 20,200| 18,900| 19,400| 17,800| 18,500| 16,800| 17,500| 15,800| 16,400| 14,800| 15,300| 13,900| 14,000| 12,900| 12,600
Lbs. H20/hr.| 19.9| 19.7| 18.9| 19.1| 17.8| 18.3| 16.8| 17.5| 15.8| 16.5| 14.9| 15.5| 14.0| 14.4| 13.1| 13.2| 12.2| 11.9
Supply Air DB| 52.2| 64.9| 52.6| 66.6| 53.1| 68.3| 53.5| 70.0| 54.0| 71.8| 54.4| 73.7| 54.8| 75.6| 55.2| 77.5| 55.7| 79.5
Supply Air WB| 51.4| 54.6| 51.8| 55.5| 52.3| 56.5| 52.7| 57.4| 53.1| 58.4| 53.5| 59.4| 53.9| 60.4| 54.3| 61.4| 54.6| 62.5
Suction PSIG4| 129| 118| 130| 119| 131| 121| 132| 122| 133| 123| 134| 124| 135| 125| 136| 127| 137| 128
Discharge PSIG4| 293| 272| 313| 286| 335| 301| 357| 316| 380| 332| 404| 348| 429| 365| 455| 383| 483| 402

75/65.5 (60% RH)

| Total Cooling Btuh| 67,600| 36,900| 65,700| 33,900| 64,100| 30,600| 61,900| 27,500| 60,100| 24,000| 58,200| 20,400| 56,400| 16,600| 54,600| 12,700| 52,900| 8,600
Sensible Btuh| 42,500| 12,700| 41,700| 10,500| 41,100| 8,200| 40,100| 5,800| 39,300| 3,300| 38,500| 800| 37,600| (1,800)| 36,800| (4,500)| 35,900| (7,300)
S/T| 0.629| 0.344| 0.635| 0.310| 0.641| 0.268| 0.648| 0.211| 0.654| 0.138| 0.662| 0.039| 0.667| 0| 0.674| 0| 0.679| 0
Latent Btuh| 25,100| 24,200| 24,000| 23,400| 23,000| 22,400| 21,800| 21,700| 20,800| 20,700| 19,700| 19,600| 18,800| 18,400| 17,800| 17,200| 17,000| 15,900
Lbs. H20/hr.| 23.7| 22.8| 22.6| 22.1| 21.7| 21.1| 20.6| 20.5| 19.6| 19.5| 18.6| 18.5| 17.7| 17.4| 16.8| 16.2| 16.0| 15.0
Supply Air DB| 53.5| 66.1| 54.0| 67.8| 54.4| 69.5| 54.9| 71.2| 55.3| 73.0| 55.7| 74.9| 56.2| 76.8| 56.6| 78.7| 57.0| 80.8
Supply Air WB| 52.8| 55.8| 53.3| 56.7| 53.6| 57.6| 54.1| 58.6| 54.5| 59.5| 54.9| 60.5| 55.3| 61.5| 55.7| 62.6| 56.0| 63.6
Suction PSIG4| 132| 122| 133| 123| 134| 123| 135| 125| 136| 126| 137| 127| 138| 129| 139| 130| 140| 131
Discharge PSIG4| 296| 276| 316| 290| 337| 304| 359| 320| 382| 335| 406| 352| 432| 369| 458| 387| 485| 406

75/66.7 (65% RH)

| Total Cooling Btuh| 69,000| 38,500| 67,100| 35,600| 65,500| 32,300| 63,300| 29,100| 61,500| 25,700| 59,700| 22,100| 57,900| 18,300| 56,100| 14,300| 54,300| 10,200
Sensible Btuh| 40,000| 11,200| 39,200| 9,000| 38,500| 6,700| 37,600| 4,300| 36,700| 1,800| 35,900| (800)| 35,100| (3,400)| 34,200| (6,100)| 33,400| (8,800)
S/T| 0.580| 0.29| 0.584| 0.25| 0.588| 0.21| 0.594| 0.15| 0.597| 0.07| 0.601| 0| 0.606| 0| 0.610| 0| 0.615| 0
Latent Btuh| 29,000| 27,300| 27,900| 26,600| 27,000| 25,600| 25,700| 24,800| 24,800| 23,900| 23,800| 22,900| 22,800| 21,700| 21,900| 20,400| 20,900| 19,000
Lbs. H20/hr.| 27.4| 25.8| 26.3| 25.1| 25.5| 24.2| 24.2| 23.4| 23.4| 22.5| 22.5| 21.6| 21.5| 20.5| 20.7| 19.2| 19.7| 17.9
Supply Air DB| 54.8| 67.3| 55.3| 69.0| 55.7| 70.7| 56.2| 72.4| 56.6| 74.2| 57.1| 76.1| 57.5| 78.0| 57.9| 80.0| 58.3| 82.0
Supply Air WB| 54.3| 56.9| 54.7| 57.8| 55.1| 58.7| 55.6| 59.7| 56.0| 60.7| 56.4| 61.7| 56.7| 62.7| 57.1| 63.7| 57.5| 64.8
Suction PSIG4| 135| 125| 136| 126| 137| 127| 138| 128| 139| 129| 140| 130| 141| 132| 142| 133| 143| 134
Discharge PSIG4| 298| 280| 318| 294| 339| 308| 361| 323| 385| 339| 409| 356| 434| 373| 460| 391| 487| 409

75/68 (70% RH)

| Total Cooling Btuh| 70,400| 40,200| 68,500| 37,200| 66,900| 34,000| 64,800| 30,800| 62,900| 27,300| 61,100| 23,700| 59,300| 19,900| 57,500| 16,000| 55,700| 11,900
Sensible Btuh| 37,400| 9,600| 36,600| 7,400| 35,900| 5,100| 35,000| 2,700| 34,200| 200| 33,300| (2,300)| 32,500| (4,900)| 31,700| (7,600)| 30,800| (10,400)
S/T| 0.531| 0.239| 0.534| 0.199| 0.537| 0.150| 0.540| 0.088| 0.544| 0.007| 0.545| 0| 0.548| 0| 0.551| 0| 0.553| 0
Latent Btuh| 33,000| 30,600| 31,900| 29,800| 31,000| 28,900| 29,800| 28,100| 28,700| 27,100| 27,800| 26,000| 26,800| 24,800| 25,800| 23,600| 24,900| 22,300
Lbs. H20/hr.| 31.1| 28.9| 30.1| 28.1| 29.2| 27.3| 28.1| 26.5| 27.1| 25.6| 26.2| 24.5| 25.3| 23.4| 24.3| 22.3| 23.5| 21.0
Supply Air DB| 56.2| 68.5| 56.6| 70.2| 57.0| 71.9| 57.5| 73.6| 58.0| 75.4| 58.4| 77.3| 58.9| 79.2| 59.3| 81.2| 59.7| 83.2
Supply Air WB| 55.7| 58.1| 56.1| 59.0| 56.5| 59.9| 57.0| 60.9| 57.4| 61.8| 57.8| 62.8| 58.2| 63.8| 58.6| 64.9| 58.9| 65.9
Suction PSIG4| 138| 128| 139| 129| 140| 130| 142| 131| 143| 132| 144| 133| 145| 135| 146| 136| 146| 138
Discharge PSIG4| 300| 283| 321| 297| 342| 311| 364| 327| 387| 343| 411| 359| 436| 376| 462| 394| 490| 413

80/68.3 (55% RH)

| Total Cooling Btuh| 93,400| 41,300| 91,500| 38,300| 89,800| 35,000| 87,700| 31,900| 85,900| 28,400| 84,000| 24,800| 82,200| 21,000| 80,400| 17,100| 78,600| 13,000
Sensible Btuh| 45,900| 17,300| 45,100| 15,100| 44,400| 12,800| 43,500| 10,400| 42,700| 7,900| 41,800| 5,400| 41,000| 2,700| 40,200| –| 39,300| (2,700)
S/T| 0.491| 0.42| 0.493| 0.39| 0.494| 0.37| 0.496| 0.33| 0.497| 0.28| 0.498| 0.22| 0.499| 0.13| 0.500| 0.00| 0.500| 0
Latent Btuh| 47,500| 24,000| 46,400| 23,200| 45,400| 22,200| 44,200| 21,500| 43,200| 20,500| 42,200| 19,400| 41,200| 18,300| 40,200| 17,100| 39,300| 15,700
Lbs. H20/hr.| 44.8| 22.6| 43.8| 21.9| 42.8| 20.9| 41.7| 20.3| 40.8| 19.3| 39.8| 18.3| 38.9| 17.3| 37.9| 16.1| 37.1| 14.8
Supply Air DB| 54.8| 69.1| 55.3| 70.8| 55.7| 72.5| 56.2| 74.3| 56.6| 76.1| 57.0| 77.9| 57.5| 79.8| 57.9| 81.8| 58.3| 83.8
Supply Air WB| 54.8| 58.1| 55.2| 59.0| 55.6| 59.9| 56.1| 60.9| 56.5| 61.8| 56.9| 62.8| 57.3| 63.8| 57.6| 64.9| 58.0| 65.9
Suction PSIG4| 138| 128| 140| 129| 141| 130| 142| 131| 143| 133| 144| 134| 145| 135| 146| 137| 147| 138
Discharge PSIG4| 299| 283| 319| 296| 340| 311| 363| 326| 386| 342| 410| 358| 435| 376| 461| 394| 488| 412

1. V values listed are with ventilation package disabled
2. Return air temperature °F @ Default airflow (1750 CFM) for AC tests and Balanced Climate airflow (1180 CFM) for dehumidification tests
3. Below 50°F, the unit requires a factory or field installed with low ambient control.
4. Suction pressure +/- 4 psi, Discharge pressure +/- 10 psi

|
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TABLE 3
Dehumidification Relay Logic Board

**Energize on Unit Terminal Strip| ****Mode| ****Occupied/ Unoccupied| ****Inputs to the Board| Outputs from the Board
---|---|---|---|---
| | | Y| W2| A1| D| TWV| YO**
Y1, G ①| Cooling| Unoccupied| X| | | | | X
Y1, G, A ①| Cooling| Occupied| X| | X| | | X
Y1, G, A, D ①| Cooling w/Dehum ②| Occupied| X| | X| X| | X
Y1, G, D ①| Cooling w/Dehum ②| Unoccupied| X| | | X| | X
G, B/W1| 1st Stage Electric Heat| Unoccupied| | X| | | |
G, B/W1, A| 1st Stage Electric Heat| Occupied| | X| X| | |
G, B/W1, A, D| 1st Stage Electric Heat w/Dehum ③| Occupied| | X| X| | |
G, B/W1, D| 1st Stage Electric Heat w/Dehum ③| Unoccupied| | X| | | |
G, B/W1, W2| 2nd Stage Electric Heat| Unoccupied| | X| | | |
G, B/W1, W2, A| 2nd Stage Electric Heat| Occupied| | X| X| | |
G, B/W1, W2, A, D| 2nd Stage Electric Heat and Dehum ③| Occupied| | X| X| | |
G, B/W1, W2, D| 2nd Stage Electric Heat and Dehum ③| Unoccupied| | X| | | |
D| Dehum| Unoccupied| | | | X| X ④| X ④
D, A| Dehum| Occupied| | | X| X| X| X

1. The same dehumidification inputs and outputs exist when there is a 2nd stage cooling call as well (Y2).
2. Cooling takes precedence over dehumidification. A cooling call cancels dehumidification.
3. The dehumidification input “D” is not received by the board because of an isolation relay that is energized by the call for heating (B/ W1). Thus, the heating call (B/W1) always takes precedence over dehumidification.
4. The relay logic board has a jumper (J1) on it to choose between “any-time dehumidification” and “occupied dehumidification”. The factory default is P1-P2. With the jumper in the P1-P2 position, dehumidification is available any time there is a “D” input to the relay logic board. With the jumper in the P2-P3 position, dehumidification is available when there is an occupancy signal to the “A1” terminal, “D” would also need to be energized to dehumidify.
   Refer to the sequence of operations. In most cases, cooling and heating modes take priority over dehumidification.

TABLE 4
Electrical Specifications

Model| Rated
Volts
& Phase| No. Field Power Circuits| Single Circuit| Dual Circuit
---|---|---|---|---
1.
Minimum
Circuit
Ampacity| 2.
Maximum External Fuse or Ckt. Brkr.| 3.
Field Power Wire Size| 3.
Ground Wire | 1.
Minimum
Circuit
Ampacity| 2.
Maximum
External
Fuse or Oct.
Breaker| 3.
Field Power
Wire Size| 3.
Ground
Wire Size
Ckt.
A| Ckt.
B| Ckt.
A| Ckt.
B| Ckt.
A| Ckt.| BA
Ckt.| Ckt.
B
W3SACDA00, A0Z
A05
A10
A15
A20| 230/208-1| 1
1
1
1 or 2
1 or 2| 24
31
57
83
109| 35
35
60
90
125| 8
8
6
4
2| 10
10
10
8
6| 57
57| 26
52| 60
60| 30
60| 6
6| 10
6| 10
10| 10
10
W3SACD00, B0Z
B06
B09
B15| 230/208-3| 1
1
1
1| 18
23
32
50| 25
25
35
60| 10
10
8
8| 10
10
10
10| | | | | | | |
W3SACD00, C0Z
C06
C09
C15| 460-3| 1
1
1
1| 10
12
17
26| 15
15
20
30| 14
14
12
10| 14
14
12
10| | | | | | | |
W4SACD00, A0Z
A05
A10
A15| 230/208-1| 1
1
1
1 or 2| 34
34
59
85| 50
50
60
90| 8
8
6
4| 10
10
10
8| 59| 26| 60| 30| 6| 10| 10| 10
W4SACD00, B0Z
B05
B09
B18| 230/208-3| 1
1
1
1| 25
25
34
60| 35
35
40
60| 8
8
8
6| 10
10
10
10| | | | | | | |
W4SACD00, C0Z
C05
C09| 460-3| 1
1
1| 12
12
18| 15
15
20| 14
14
12| 14
14
12| | | | | | | |
W5SACD00, A0Z
A05
A10| 230/208-1| 1
1
1| 39
39
60| 50
50
60| 8
8
6| 10
10
10| | | | | | | |
W5SACD00, B0Z
B09
B15| 230/208-3| 1
1
1| 28
35
53| 40
40
60| 8
8
6| 10
10
10| | | | | | | |
W5SACD00, C0Z
C09
C15| 460-3| 1
1
1| 15
18
27| 20
20
30| 12
12
10| 12
12
10| | | | | | | |

1.  These “Minimum Circuit Ampacity” values are to be used for sizing the field power conductors. Refer to the National Electrical Code (latest version), Article 310 for power conductor sizing. CAUTION: When more than one field power circuit is run through one conduit, the conductors must be derated. Pay special attention to note 8 of Table 310 regarding Ampacity Adjustment Factors when more than three (3) current carrying conductors are in a raceway.
2.  Maximum size of the time delay fuse or circuit breaker for protection of field wiring conductors.
3.  Based on 75°copper wire. All wiring must conform to the National Electrical Code and all local codes.
   NOTE: The Maximum Overcurrent Protection (MOCP) value listed is the maximum value as per UL 1995 calculations for MOCP (branch-circuit conductor sizes in this chart are based on this MOCP). The actual factory-installed overcurrent protective device (circuit breaker) in this model may be lower than the maximum UL 1995 allowable MOCP value, but still above the UL 1995 minimum calculated value or Minimum Circuit Ampacity (MCA) listed.

IMPORTANT:
While this electrical data is presented as a guide, it is important to electrically connect properly sized fuses and conductor wires in accordance with the National Electrical Code and all local codes.

Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
www.bardhvac.com| Manual: 7960-869D
Supersedes: 7960-869C
Date: 4-8-22
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| Bard W3SACD Wall Mount Air Conditioner Dehumidification [pdf] Instructions
W3SACD, W4SACD, W5SACD, Wall Mount Air Conditioner Dehumidification, W3SACD Wall Mount Air Conditioner Dehumidification
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