Table of Contents
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R-410A
XA SERIES
6-1/2 - 12-1/2 Ton
60 Hertz
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Preceding Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Rigging And Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Ductwork . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Compressors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Power And Control Wiring. . . . . . . . . . . . . . . . . . . . . . . . . 15
Optional Electric Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Options/Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Airflow Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
1 XA-06 thru -12 Unit Limitations . . . . . . . . . . . . . . . . . . . . . 7
2 Weights and Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . 8
3 XA-06 thru -12 Unit Accessory Weights . . . . . . . . . . . . . . 9
4 XA-06 thru -12 Unit Physical Dimensions . . . . . . . . . . . . 10
5 XA-06 thru -12 Unit Clearances . . . . . . . . . . . . . . . . . . . 10
6 Side Duct Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
7 Control Wire Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
8 Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
9 Electric Heat Minimum Supply Air . . . . . . . . . . . . . . . . . . 27
10 Supply Air Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
11 Altitude/Temperature Correction Factors . . . . . . . . . . . . 31
12 Airflow Performance - Side Duct Application . . . . . . . . . 33
1 Unit Shipping Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Condenser Covering . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3 Compressor Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 XA Component Location . . . . . . . . . . . . . . . . . . . . . . . . . 6
5 Unit 4 Point Load Weight . . . . . . . . . . . . . . . . . . . . . . . . . 8
6 Unit 6 Point Load Weight . . . . . . . . . . . . . . . . . . . . . . . . . 8
7 Center of Gravity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
8 XA-03 thru -10 Physical Dimensions . . . . . . . . . . . . . . . . 9
9 XA-12 Physical Dimensions . . . . . . . . . . . . . . . . . . . . . . . 9
10 XA-06 thru -12 Unit Bottom Duct Openings . . . . . . . . . . 10
11 XA-06 thru -12 Unit Electrical Entry . . . . . . . . . . . . . . . . 11
12 XA-06 thru -10 Unit Side Duct Openings . . . . . . . . . . . . 11
13 XA-12 Unit Side Duct Openings . . . . . . . . . . . . . . . . . . . 12
14 XA-06 thru -12 Unit Left Duct Opening . . . . . . . . . . . . . 12
15 XA-06 thru -12 Roof Curb . . . . . . . . . . . . . . . . . . . . . . . 13
TABLE OF CONTENTS
Air Balance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Checking Air Quantity . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Cooling Sequence Of Operation . . . . . . . . . . . . . . . . . . . . 41
No Outdoor Air Options . . . . . . . . . . . . . . . . . . . . . . . . . 41
Cooling Operation Errors . . . . . . . . . . . . . . . . . . . . . . . . 42
Heating Sequence of Operation . . . . . . . . . . . . . . . . . . . . 43
Electric Heat Operation Errors . . . . . . . . . . . . . . . . . . . . 43
Start-Up (Cooling) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Charging The Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Unit Control Board Option Setup . . . . . . . . . . . . . . . . . . . . . . 46
Option Byte Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Heat Delay Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
LIST OF TABLES
13 Airflow Performance - Bottom Duct Application . . . . . . . 35
14 RPM Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
15 Indoor Blower Specifications . . . . . . . . . . . . . . . . . . . . . . 37
16 Power Exhaust Specifications . . . . . . . . . . . . . . . . . . . . 37
17 Motor Sheave Datum Diameters . . . . . . . . . . . . . . . . . . 39
18 Additional Static Resistance . . . . . . . . . . . . . . . . . . . . . . 40
19 Electric Heat Limit Setting 50" Cabinet . . . . . . . . . . . . . . 44
20 Electric Heat Limit Setting 42" Cabinet . . . . . . . . . . . . . . 44
21 Electric Heat Anticipator Setpoints . . . . . . . . . . . . . . . . . 44
22 Unit Control Board Flash Codes . . . . . . . . . . . . . . . . . . . 45
23 Heat Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
LIST OF FIGURES
16 XA-06 thru -12 Transition Roof Curb . . . . . . . . . . . . . . . 13
17 Side Panels With Hole Plugs . . . . . . . . . . . . . . . . . . . . . 14
18 Return Downflow Plenum With Panel . . . . . . . . . . . . . . 14
19 Discharge Panel In Place . . . . . . . . . . . . . . . . . . . . . . . . 14
20 Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Without Electric Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
22 Typical Electronic Thermostat Field Wiring . . . . . . . . . . 17
23 Typical Field Wiring 24 Volt Thermostat . . . . . . . . . . . . 17
24 Enthalpy Set Point Chart . . . . . . . . . . . . . . . . . . . . . . . . 29
25 Honeywell Economizer Control W7212 . . . . . . . . . . . . . 29
26 Belt Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
27 Altitude/Temperature Correction Factors . . . . . . . . . . . . 31
28 Dry Coil Delta P . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
29 Unit Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
267234-BIM-C-1208
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Table of Contents
Related Manuals for Johnson Controls XA Series
Summary of Contents for Johnson Controls XA Series
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Page 1: Table Of Contents
R-410A XA SERIES 6-1/2 - 12-1/2 Ton 60 Hertz TABLE OF CONTENTS General ......... . 2 Air Balance . -
Page 2: General
This product must be installed in strict compliance with the installation instructions and any applicable local, state and national codes including, but not limited to building, electrical, and mechanical codes. Johnson Controls Unitary Products... - Page 3 This system uses R-410A Refrigerant which operates at For use as a cooling only unit, cooling unit with higher pressures than R-22. No other refrigerant may be supplemental electric heat or a forced air furnace. used in this system. Johnson Controls Unitary Products...
- Page 4 Y = Options 4 & 5 Z = Options 3, 4 & 5 Options 1 = Disconnect 2 = Non-Pwr'd Conv. Outlet 3 = Smoke Detector S.A. 4 = Smoke Detector R.A. 5 = Pwr'd Conv. Outlet Johnson Controls Unitary Products...
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Page 5: Installation
AE-011-07 or call the applications department for Figure 2: Condenser Covering Unitary Products @ 1-877-UPG-SERV for guidance. Additional accessories may be needed for stable operation at temperatures below 30° F. Johnson Controls Unitary Products... -
Page 6: Xa Component Location
Roof curbs in eight- and motor fourteen-inch heights. Roof curbs for transitioning from Sunline™ footprint to the XA series footprint are also available (field installed accessory) Slide-out drain pain Side entry power Compressor #1 Access with steel 3/4” NPT,... -
Page 7: Location
All panels must be secured in place when the unit is inlet or vent outlets. lifted. The condenser coils should be protected from rigging cable damage with plywood or other suitable material. Johnson Controls Unitary Products... -
Page 8: Weights And Dimensions
Table 2: Weights and Dimensions Weight (lbs.) Center of Gravity 4 Point Load Location (lbs.) 6 Point Load Location (lbs.) Size Model (Tons) Shipping Operating (6.5) (7.5) 1140 1135 25.5 (8.5) 1140 1135 25.5 (10) 1405 1400 25.5 (12.5) Johnson Controls Unitary Products... -
Page 9: Thru -12 Unit Accessory Weights
Table 3: XA-06 thru -12 Unit Accessory Weights Weight (lbs.) Unit Accessory Shipping Operating Economizer Power Exhaust Electric Heat 1. Weight given is for the maximum heater size available (54KW). Figure 8: XA-03 thru -10 Physical Dimensions Figure 9: XA-12 Physical Dimensions Johnson Controls Unitary Products... -
Page 10: Thru -12 Unit Physical Dimensions
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. Figure 10: XA-06 thru -12 Unit Bottom Duct Openings Johnson Controls Unitary Products... -
Page 11: Thru -12 Unit Electrical Entry
S u p p l y A i r 2 - 3 1 /3 2 5 - 5 /3 2 3 1 - 1 1 /1 6 Figure 12: XA-06 thru -10 Unit Side Duct Openings Johnson Controls Unitary Products... -
Page 12: Side Duct Dimensions
28 1/4 18 1/16 28 1/4 18 1/4 XA-10 28 1/4 18 1/16 28 1/4 18 1/4 XA-12 28 1/4 18 1/16 28 1/4 18 1/4 30-3/8 4-5/16 Figure 14: XA-06 thru -12 Unit Left Duct Opening Johnson Controls Unitary Products... -
Page 13: Ductwork
A closed return duct system should be used. This will not Refer to Figure 10 for bottom air duct openings. Refer to preclude use of economizers or outdoor fresh air intake. The Figures 12, 13 and Table 6 for side air duct openings. Johnson Controls Unitary Products... -
Page 14: Condensate Drain
Figure 18: Return Downflow Plenum With Panel The compressor also uses a polyolester (POE oil), Mobil 3MA POE. This oil is extremely hygroscopic, meaning it absorbs water readily. POE oil can absorb 15 times as much water as other oils Johnson Controls Unitary Products... -
Page 15: Filters
The above water-proofing conditions Power And Control Wiring will also apply when installing a field supplied disconnect switch. Field wiring to the unit, fuses, and disconnects must conform to provisions of National Electrical Code (NEC), ANSI/NFPA No. Johnson Controls Unitary Products... -
Page 16: Control Wire Sizes
Follow the manufacturer's instructions enclosed with thermostat for general installation procedure. Seven (7) 18 AWG 150 Feet color-coded, insulated wires should be used to connect the 1. From the unit to the thermostat and back to the unit. Johnson Controls Unitary Products... -
Page 17: Typical Electronic Thermostat Field Wiring
Terminals A1 and A2 provide a relay output to close the outdoor economizer dampers when the thermostat switches to the set-back position. Figure 22: Typical Electronic Thermostat Field Wiring T-STAT UNIT CONTROL BOARD Figure 23: Typical Field Wiring 24 Volt Thermostat Johnson Controls Unitary Products... -
Page 18: Electrical Data
11.3 38.8 41.0 60.0 13.5 18.0 22.6 52.3 54.5 24.0 30.1 61.4 63.6 34.0 42.7 76.4 78.6 None 19.9 21.7 30.7 32.5 42.0 10.5 18.0 18.1 41.5 43.3 24.0 24.1 48.7 50.5 34.0 34.1 60.8 62.6 Johnson Controls Unitary Products... - Page 19 None 26.1 27.9 18.0 18.1 47.7 49.5 62.0 13.5 24.0 24.1 54.9 56.7 34.0 34.1 67.0 68.8 54.0 54.2 67.0 68.8 1. Minimum Circuit Ampacity. 2. Dual Element, Time Delay Type. 3. HACR type per NEC. Johnson Controls Unitary Products...
- Page 20 11.3 40.0 42.2 60.0 13.5 18.0 22.6 53.5 55.7 24.0 30.1 62.6 64.8 34.0 42.7 77.6 79.8 None 20.4 22.2 31.2 33.0 42.0 10.5 18.0 18.1 42.0 43.8 24.0 24.1 49.2 51.0 34.0 34.1 61.3 63.1 Johnson Controls Unitary Products...
- Page 21 None 28.0 29.8 18.0 18.1 49.6 51.4 62.0 13.5 24.0 24.1 56.8 58.6 34.0 34.1 68.9 70.7 54.0 54.2 68.9 70.7 1. Minimum Circuit Ampacity. 2. Dual Element, Time Delay Type. 3. HACR type per NEC. Johnson Controls Unitary Products...
- Page 22 60.0 13.5 18.0 22.6 57.3 59.5 24.0 30.1 66.4 68.6 34.0 42.7 81.4 83.6 None – – – 23.9 25.7 34.7 36.5 42.0 10.5 18.0 18.1 45.5 47.3 24.0 24.1 52.7 54.5 34.0 34.1 64.8 66.6 Johnson Controls Unitary Products...
- Page 23 – 30.1 31.9 18.0 18.1 51.7 53.5 62.0 13.5 24.0 24.1 58.9 60.7 34.0 34.1 71.0 72.8 54.0 54.2 71.0 72.8 1. Minimum Circuit Ampacity. 2. Dual Element, Time Delay Type. 3. HACR type per NEC. Johnson Controls Unitary Products...
- Page 24 60.0 13.5 18.0 22.6 58.5 60.7 24.0 30.1 67.6 69.8 34.0 42.7 82.6 84.8 None – – – 24.4 26.2 35.2 37.0 42.0 10.5 18.0 18.1 46.0 47.8 24.0 24.1 53.2 55.0 34.0 34.1 65.3 67.1 Johnson Controls Unitary Products...
- Page 25 – 32.0 33.8 18.0 18.1 53.6 55.4 62.0 13.5 24.0 24.1 60.8 62.6 34.0 34.1 72.9 74.7 54.0 54.2 72.9 74.7 1. Minimum Circuit Ampacity. 2. Dual Element, Time Delay Type. 3. HACR type per NEC. Johnson Controls Unitary Products...
- Page 26 Tube diameter (in.) Circuitry Type Split-face Split-face Split-face Split-face Split-face EVAPORATOR COIL DATA Face area (Sq. Ft.) 10.6 10.6 13.2 13.2 13.2 Rows Fins per inch Tube diameter Circuitry Type Split-face Split-face Split-face Split-face Split-face Refrigerant control Johnson Controls Unitary Products...
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Page 27: Optional Electric Heat
2550 2550 2550 2550 208/230-3-60 3000 3000 3000 3500 460-3-60 3000 3000 3000 3000 (10) 600-3-60 3000 3000 3000 3500 208/230-3-60 3750 3750 3750 4000 460-3-60 3750 3750 3750 3750 (12.5) 600-3-60 3750 3750 3750 3750 Johnson Controls Unitary Products... -
Page 28: Options/Accessories
Remove the top rear access panel from the unit. Locate the full open. When there is no call for free cooling, the damper economizer control module, where the following adjustments position is limited by the IAQ Max damper position setting. will be made. Johnson Controls Unitary Products... -
Page 29: Enthalpy Set Point Chart
Damper Min. Position Screw Indoor Air Quality Max. Adjustment Screw Indoor Air Quality Indoor Air Quality Min. Adjustment Screw Free Cool Free Cooling LED Economizer Enthalpy Set Point Adjustment Screw Figure 25: Honeywell Economizer Control W7212 Johnson Controls Unitary Products... -
Page 30: Supply Air Limitations
(See ‘PHASING’). Table 10: Supply Air Limitations Figure 26: Belt Adjustment Unit Size (Ton) Minimum Maximum -06 (6.5) 1950 3250 -07 (7.5) 2250 3750 -08 (8.5) 2550 4250 -10 (10) 3000 5000 -12 (12.5) 3750 6250 Johnson Controls Unitary Products... -
Page 31: Altitude/Temperature Correction Factors
0.950 1000 ft 0.900 2000 ft 3000 ft 0.850 4000 ft 0.800 5000 ft 6000 ft 0.750 7000 ft 8000 ft 0.700 9000 ft 10000 ft 0.650 0.600 Air Temperature (ºF) Figure 27: Altitude/Temperature Correction Factors Johnson Controls Unitary Products... -
Page 32: Airflow Performance
5 Turns 4 Turns 3 Turns 2 Turns 1 Turn Fully Model (Tons) Sheave Sheave Open Open Open Open Open Open Closed 1.73 1VM50 AK74 1035 1079 1126 2.30 1VM50 AK64 1039 1094 1150 1207 1256 1308 Johnson Controls Unitary Products... -
Page 33: Airflow Performance - Side Duct Application
1. Blower performance includes 2” filters. See STATIC RESISTANCE table for additional applications. 2. See RPM SELECTION table to determine desired motor sheave setting and to determine the maximum continuous BHP. 3. kW = BHP x 0.932. Johnson Controls Unitary Products... - Page 34 1. Blower performance includes 2” filters. See STATIC RESISTANCE table for additional applications. 2. See RPM SELECTION table to determine desired motor sheave setting and to determine the maximum continuous BHP. 3. kW = BHP x 0.932. Johnson Controls Unitary Products...
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Page 35: Airflow Performance - Bottom Duct Application
1. Blower performance includes 2” filters. See STATIC RESISTANCE table for additional applications. 2. See RPM SELECTION table to determine desired motor sheave setting and to determine the maximum continuous BHP. 3. kW = BHP x 0.932. Johnson Controls Unitary Products... -
Page 36: Rpm Selection
2.30 1VM50 AK89 (8.5) 3.45 1VM50 AK74 1016 1067 1110 2.30 1VM50 AK84 (10) 3.45 1VM50 AK74 1016 1067 1110 3.45 1VM50 AK74 1016 1067 1110 (12.5) 5.75 1VP56 BK77 1052 1095 1136 1175 1216 1272 Johnson Controls Unitary Products... -
Page 37: Air Balance
Use an Inclined Manometer or Magnehelic to determine air ducts of the unit. the pressure drop across a dry evaporator coil. Since the moisture on an evaporator coil can vary greatly, measuring Johnson Controls Unitary Products... -
Page 38: Dry Coil Delta P
XA-06 0.45 XA-08 XA-07 XA-10 XA-12 0.35 0.25 0.15 0.05 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000 6500 Airflow (CFM) Figure 28: Dry Coil Delta P Johnson Controls Unitary Products... -
Page 39: Motor Sheave Datum Diameters
Re-checking set screws after 10-12 hrs. run time is recommended. Table 17: Motor Sheave Datum Diameters 1VM50x7/8 1VP56x1-1/8 (1-1/2, 2 & 3 HP Motor) (5 HP Motor) Turns Open Datum Diameter Turns Open Datum Diameter 1-1/2 1-1/2 2-1/2 2-1/2 3-1/2 3-1/2 4-1/2 4-1/2 5-1/2 Johnson Controls Unitary Products... -
Page 40: Additional Static Resistance
2. 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. Johnson Controls Unitary Products... -
Page 41: Operation
Cooling Sequence Of Operation If there is an initial call for both stages of cooling, the UCB will For the XA series of units, the thermostat makes a circuit delay energizing compressor #2 by 30 seconds in order to between "R" and "Y1" for the first stage of cooling. -
Page 42: Cooling Operation Errors
ASCD, the UCB will re-energize the halted compressor. system will continue in operation unless it is affected by the fault as well. Should a low-pressure switch open three times within one hour of operation, the UCB will lock-out the associated compressor Johnson Controls Unitary Products... -
Page 43: Heating Sequence Of Operation
As mentioned earlier, the defrost control (DC) utilizes a time/ (See Table 22). temperature defrost scheme. The following two conditions must be met before the DC will enter a defrost mode: Johnson Controls Unitary Products... -
Page 44: Start-Up (Cooling)
Refer to UNIT CONTROL BOARD FLASH CODES temperature. Table 22. First stage compressors will energize after the built-in time delay (five minutes). The second stage of the thermostat will energize second stage compressor if needed. Johnson Controls Unitary Products... -
Page 45: Charging The Unit
Flashing Cooling 12 Flashes Unit Locked Out due to Fan Overload Switch Failure 13 Flashes Compressor Held Off due to Low Voltage Flashing 14 Flashes EEPROM Storage Failure No Power or Control Failure 1. Non-alarm condition. Johnson Controls Unitary Products... -
Page 46: Unit Control Board Option Setup
LED (Heat Delay) is turned off. • Press the COMM SETUP / SELECT button to toggle into the Heat Delay Setup, the green LED will turn off and the Non-std Non-std red LED for Heat Delay will turn on. Johnson Controls Unitary Products... - Page 47 10. If 24 volts is present at the UCB Y1 terminal and none of cooling and the compressors will not immediately operate. the switches are open and the compressor is not locked If both stages of cooling are requested simultaneously and Johnson Controls Unitary Products...
- Page 48 #1 will be held off for the ASCD, and If installed, check the position of the economizer blades. If compressor #2 may be held off for a portion of the the blades are open, the economizer is providing free ASCD. See the next step. Johnson Controls Unitary Products...
- Page 49 If 24 volts is not present at Y1 “ECON”, the UCB UCB’s Mate-N-Lock plug. has faulted. The UCB should de-energize all compressors 13. The UCB can be programmed to lock out compressor operation during free cooling and in low ambient Johnson Controls Unitary Products...
- Page 50 UCB has faulted. For units without factory installed or with field installed economizers, the UCB allows compressor operation all the 15. If none of the above correct the error, replace the UCB. Johnson Controls Unitary Products...
- Page 51 267234-BIM-C-1208 Johnson Controls Unitary Products...
- Page 52 Subject to change without notice. Printed in U.S.A. 267234-BIM-C-1208 Copyright © 2009 by Johnson Controls, Inc. All rights reserved. Supersedes: 267234-BIM-B-0507 Johnson Controls Unitary Products 5005 York Drive Norman, OK 73069...
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