Goodmans ASX, GSZ, ASZ, SSX, DSZ, DSX, GSX, SSZ manual 61A Checking Heater Limit Controls, Formulas

Page 59

SERVICING

Alternately, the system CFM can be determined by operating the electric heaters and indoor blower WITHOUT having the compressor in operation. Measure the temperature rise as close to the blower inlet and outlet as possible.

If other than a 240V power supply is used, refer to the BTUH CAPACITY CORRECTION FACTOR chart below.

BTUH CAPACITY CORRECTION FACTOR

SUPPLY VOLTAGE

250 230 220 208

MULTIPLICATION FACTOR 1.08 .92 .84 .75

EXAMPLE: Five (5) heaters provide 24.0 KW at the rated 240V. Our actual measured voltage is 220V, and our measured temperature rise is 42°F. Find the actual CFM:

Answer: 24.0KW, 42°F Rise, 240 V = 1800 CFM from the TEMPERATURE RISE chart on the right.

Heating output at 220 V = 24.0KW x 3.413 x .84 = 68.8 MBH.

Actual CFM = 1800 x .84 Corr. Factor = 1400 CFM.

NOTE: The temperature rise table is for sea level installa- tions. The temperature rise at a particular KW and CFM will be greater at high altitudes, while the external static pressure at a particular CFM will be less.

TEMPERATURE RISE (F°) @ 240V

CFM

4.8

7.2

9.6

14.4

19.2

24.0

28.8

KW

KW

KW

KW

KW

KW

KW

 

 

 

 

 

 

 

 

 

600

25

38

51

-

-

-

-

700

22

33

43

-

-

-

-

800

19

29

38

57

-

-

-

900

17

26

34

51

-

-

-

1000

15

23

30

46

-

-

-

1100

14

21

27

41

55

-

-

1200

13

19

25

38

50

-

-

1300

12

18

23

35

46

-

-

1400

11

16

22

32

43

54

65

1500

10

15

20

30

40

50

60

1600

9

14

19

28

38

47

57

1700

9

14

18

27

36

44

53

1800

8

13

17

25

34

42

50

1900

8

12

16

24

32

40

48

2000

8

12

15

23

30

38

45

2100

7

11

14

22

29

36

43

2200

7

11

14

21

27

34

41

2300

7

10

13

20

26

33

39

ELECTRIC HEATER CAPACITY BTUH

HTR

3.0

4.7

6.0

7.0

9.5

14.2

19.5

21.0

KW

KW

KW

KW

KW

KW

KW

KW

KW

BTUH

10200

16200

20400

23800

32400

48600

66500

71600

 

 

 

 

 

 

 

 

 

FORMULAS:

Heating Output = KW x 3413 x Corr. Factor

Actual CFM = CFM (from table) x Corr. Factor

BTUH = KW x 3413

BTUH = CFM x 1.08 x Temperature Rise (T)

CFM = KW x 3413 1.08 x T

T = BTUH

CFM x 1.08

S-61A CHECKING HEATER LIMIT CONTROL(S)

Each individual heater element is protected with a limit control device connected in series with each element to prevent overheating of components in case of low airflow. This limit control will open its circuit at approximately 150°F.

HIGH VOLTAGE!

Disconnect ALL power before servicing or installing. Multiple power sources may be present. Failure to do so may cause property damage, personal injury or death.

1.Remove the wiring from the control terminals.

2.Using an ohmmeter, test for continuity across the nor- mally closed contacts. No reading indicates the control is open - replace if necessary.

IF FOUND OPEN - REPLACE - DO NOT WIRE AROUND.

S-61B CHECKING HEATER FUSE LINK (OPTIONAL ELECTRIC HEATERS)

Each individual heater element is protected with a one time fuse link which is connected in series with the element. The fuse link will open at approximately 333°.

WARNING

Disconnect ALL power before servicing.

1.Remove heater element assembly so as to expose fuse link.

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Contents Service Instructions Fax us at 713 Fax us at 931 438 Recognize Safety SYMBOLS, Words and LabelsEmail us at customerservice@goodmanmfg.com Important InformationSafe Refrigerant Handling Split System Heat Pumps R410A Product IdentificationModel # Description Split System Air Conditioners R410A ASX130**1AA Single Piece Air Handlers AWUF****1AA MBR/MBE Air Handlers Product Identification 1824 3642 ASX13 AccessoriesDSX/SSX16 ASX18 ASZ13 DSZ/SSZ16 ASZ18 Expansion Valve Kits FSK01A Coil Accessories Electric Heat Kitapplications Aruf Electric Heat Kitapplications Aepf Condensing Unit Product DesignFigure a Capacity Control Cooling Cycle System OperationHeating CoolingHeating Cycle Defrost CycleCooling Cycle System Operation Description AFE18-60A Control BoardCOOLING/HP Analysis Chart Troubleshooting Chart61B ServicingChecking Voltage Checking WiringChecking THERMOSTAT, WIRING, and Anticipator 3A Thermostat and Wiring3C Heating Anticipator 3B Cooling AnticipatorChecking Cycle Protector Checking Time Delay RelayTesting Coil Circuit Checking Transformer Control CircuitChecking Contactor Contacts Testing Compressor ContactorSingle Phase Checking Contactor AND/OR RelaysTesting FAN Relay Copeland Comfort Alert DiagnosticsDiagnostics Table Checking Capacitor Checking Loss of Charge ProtectorChecking High Pressure Control Checking LOW Pressure ControlRELAY, Start 15A Resistance Check15B Capacitance Check 16B Checking FAN and Blower Motor ECM Motors 16A Checking FAN and Blower Motor Windings PSC MotorsChart on Next Chart from Previous 16C Checking ECM Motor Windings 16D ECM CFM Adjustments MBE / AepfCFM GE X13TM Motor Connections 16E Blower Performance Data16F Checking GE X13TM Motors 17B Ground Test Testing Compressor WindingsChecking Compressor 17A Resistance TestCompressor Ground Test 17C Unloader Test ProcedureUnloader Test Procedure 17D Operation TestChecking Reversing Valve and Solenoid Testing Crankcase Heater Optional ItemTesting Defrost Control Testing Defrost ThermostatSequence of Operation 40 MBR/AR*F Electronic Blower Time Delay RelayChecking Heater Limit Controls Checking Heater ElementsHeating Operation MBR/AR*F with Single Stage Heat PumpsMBE/AEPF with Single Stage GSX, ASX and SSX Condensers 41 MBE/AEPF with GSX, SSX, ASX, DSXDefrost Operation 41A MBE/AEPF with Single Stage GSZ, SSZ, & ASZ Heat Pumps MBE/AEPF with TWO Stage ASX & DSX Condensers Sequence of OperationMBE/AEPF with TWO Stage ASZ & DSZ Heat Pump Units Electric Heater Optional Item Formulas 61A Checking Heater Limit Controls61B Checking Heater Fuse Link Optional Electric Heaters Brazing Materials Leak Testing Nitrogen or NITROGEN-TRACEDRefrigeration Repair Practice EvacuationEvacuation ChargingChecking Compressor Efficiency Final Charge AdjustmentTXV Valves 105B Thermostatic Expansion ValvePressure vs. Temperature Chart 410A Required Liquid Line Temperature Checking Subcooling OverfeedingUnderfeeding SuperheatSubcooling Formula = Sat. Liquid Temp. Liquid Line 109A TWO Speed ApplicationChecking Expansion Valve Operation Fixed Orifice Restrictor DevicesCompressor Burnout Checking Restricted Liquid LineOvercharge of Refrigerant NON-CONDENSABLESTube Sizing Accessories for lines greater than 80 feetRefrigerant Piping Long Line SET Application R-410AInstallation Requirements Initial System Charging AIR Handler External StaticStatic Pressure Drop Coil Static Pressure DropTotal External Static ALL Fuel System AFE18-60A Control Board Accessories Wiring Diagrams10kw and Below, One Stage Electric Heat OT/EHR18-60 #2 GRD PLM PLF XFMR-R XFMR-C After Installing Optional Heat KIT, Mark AN X Provided Above HKR Heat Kit GRD PLM PLF