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6

Table 1—Physical Data -- Unit 48DU

UNIT SIZE

024040

024060

030040

030060

036060

036090

042060

042090

NOMINAL CAPACITY (ton)

2

2

2---1/2

2---1/2

3

3

3---1/2

3---1/2

OPERATING WEIGHT (lb.)

396

401

403

408

485

493

507

515

COMPRESSORS

Quantity

2---Stage Scroll

1

REFRIGERANT: PURON (R---410A)

Quantity (lb.)

10.1

10.1

11.3

11.3

9.5

9.5

13.8

13.8

REFRIGERANT METERING DEVICE

TXV

Size

2 Ton

2 Ton

3 Ton

3 Ton

3 Ton

3 Ton

4 Ton

4 Ton

Part Number

EA36YD129

EA36YD129

EA36YD139

EA36YD139

EA36YD139

EA36YD139

EA36YD149

EA36YD149

OUTDOOR COIL

Rows...Fins/in.

Face Area (sq ft)

2...21

13.6

2...21

13.6

2...21

15.3

2...21

15.3

2...21

17.5

2...21

17.5

2...21

19.4

2...21

19.4

OUTDOOR FAN

Nominal Cfm

Diameter (in.)

Motor Hp (Rpm)

2700

22

1/8 (825)

2700

22

1/8 (825)

2700

22

1/8 (825)

2700

22

1/8 (825)

2800

22

1/8 (825)

2800

22

1/8 (825)

2800

22

1/8 (825)

2800

22

1/8 (825)

INDOOR COIL

Rows...Fins/in.

Face Area (sq ft)

3...17

3.7

3...17

3.7

3...17

3.7

3...17

3.7

3...17

4.7

3...17

4.7

3...17

4.7

3...17

4.7

INDOOR FAN

Nominal Airflow (Cfm)
Comfort

Variable based on Comfort Roll back (see User Interface instructions for more information).

Efficiency

700

700

875

875

1050

1050

1225

1225

Max

800

800

1000

1000

1200

1200

1400

1400

Furnace (gas ht.) airflow---Low Stage

475

727

475

727

745

875

745

875

Furnace (gas ht.) airflow---High Stage

844

1120

844

1120

1120

1410

1120

1410

Size (in.)

10x10

10x10

10x10

10x10

11x10

11x10

11x10

11x10

Motor HP (RPM)

1/2

1/2

1/2

1/2

3/4

3/4

3/4

3/4

FURNACE SECTION*

Burner Orifice No. (Qty...Drill Size)

Natural Gas

2...44

3...44

2...44

3...44

3...44

3...38

3...44

3...38

HIGH---PRESSURE SWITCH (psig)

Cut---out

Reset (Auto)

670

±

10

470

±

25

HIGH---PRESSURE SWITCH 2 (psig)

(Compressor Solenoid)

Cut---out

Reset (Auto)

565

±

1

5

455

±

15

LOSS---OF---CHARGE /

LOW---PRESSURE SWITCH

(Liquid Line) (psig)

Cut---out

Reset (auto)

25

±

5

55

±

5

RETURN---AIR FILTERS (in.)†

Throwaway

20x24x1

20x24x1

20x24x1

20x24x1

24x30x1

24x30x1

24x36x1

24x36x1

Continued next page.

48D

U

Содержание 48DU Series

Страница 1: ...Checking Cooling and Heating Control Operation 25 Checking and Adjusting Refrigerant Charge 25 Refrigerant Charge 25 No Charge 25 Low Charge Cooling 25 To Use Cooling Charging Charts 25 Non Communicat...

Страница 2: ...w NOx units designed for California installations These models meet the California maximum oxides of nitrogen NOx emissions requirements of 40 nanograms joule or less as shipped from the factory and m...

Страница 3: ...Support CTyp G E F G D E A05308 UNIT SIZE ODS CATALOG NUMBER A IN MM B IN MM C IN MM D IN MM E IN MM F IN MM G IN MM 024 030 CPRFCURB006A00 8 203 11 279 16 1 2 419 28 3 4 730 30 3 8 771 44 5 16 1126...

Страница 4: ...4 A06323 Fig 5 48DU024 030 Unit Dimensions...

Страница 5: ...5 A06324 Fig 6 48DU036 060 Unit Dimensions...

Страница 6: ...OIL Rows Fins in Face Area sq ft 3 17 3 7 3 17 3 7 3 17 3 7 3 17 3 7 3 17 4 7 3 17 4 7 3 17 4 7 3 17 4 7 INDOOR FAN Nominal Airflow Cfm Comfort Variable based on Comfort Roll back see User Interface i...

Страница 7: ...e for high capacity type Air filter pressure drop for non standard filters must not exceed 0 08 in wg Step 3 Provide Clearances The required minimum service clearances are shown in Fig 5 and 6 Adequat...

Страница 8: ...strip screws when re securing the unit If a screw is stripped replace the stripped one with a larger diameter screw included WARNING Rigging Lifting of Unit 1 Bend top of brackets down approximately...

Страница 9: ...Sheet Metal and Air Conditioning Contractors National Association SMACNA and Air Conditioning Contractors Association ACCA minimum installation standards for residential heating and air conditioning s...

Страница 10: ...OUTLET C99013 Fig 9 Condensate Trap Step 8 Install Gas Piping The gas supply pipe enters the unit through the access hole provided The gas connection to the unit is made to the 1 2 in FPT gas inlet on...

Страница 11: ...ot use a connector which has previously serviced another gas appliance WARNING 8 Check for gas leaks at the field installed and factory installed gas lines after all piping connections have been compl...

Страница 12: ...HUMIDITY CONTROL COMFORT ROLLBACK ETC WILL BE LOST IF THE OAT IS NOT CONNECTED For detailed mounting instructions for the OAT sensor please refer to TSTATXXSEN01 B installation instructions catalog n...

Страница 13: ...BLK GROUND LEAD SINGLE PHASE CONNECTIONS TO DISCONNECT PER NEC LEGEND NEC National Electrical Code Field Wiring Splice Connections NOTE Use copper wire only L1 L2 A06299 Fig 12 Line Power Connections...

Страница 14: ...Supply fuse The CGA Canadian Gas Association units may be fuse or circuit breaker 2 Minimum wire size is based on 60 C copper wire I fother than 60 C wire is used or if length exceeds wire length in...

Страница 15: ...orrectly positioned in fan orifice Top 1 3 of condenser fan blade should be within fan orifice venturi c Ensure fan hub is positioned correctly with respect to motor housing See Fig 23 d Make sure tha...

Страница 16: ...can be replaced MOTOR TURNS SLOWLY 1 Low static pressure loading of blower while access panel is removed will cause blower to run slowly Particularly at low airflow requests This is normal do not ass...

Страница 17: ...17 6 0 A06310 Fig 16 Wiring Schematic 48DU Single Phase 48DU...

Страница 18: ...system defective switch or connections or inadequate combustion air supply flame roll out switch open STATUS CODE 34 IGNITION PROVING FAILURE Control will try three more times before lockout 14 occurs...

Страница 19: ...rststageandsecondstagecoolingare satisfied the compressorwill shut off NOTE When two stage unit is operating at low stage system vapor suction pressure will be higher than a standard single stage syst...

Страница 20: ...age Ther mal Cutout 72 Compressor voltage sensed then disappears while cooling or heat ing demand exists Possible causes are internal compressor over load trip or start relay not releasing if installe...

Страница 21: ...nes what heating stage to run based on feedback from the UI If the UI is asking for low stage gas heat the ignition control will changetheinducerspeedtolow speedand keepthe gasvalve energized on low s...

Страница 22: ...ate and clockwise in to increase input rate REGULATOR COVER SCREW PLASTIC ADJUST SCREW LOW STAGE GAS PRESSURE REGULATOR ADJUSTMENT MANIFOLD PRESSURE TAP INLET PRESSURE TAP ON OFF SWITCH REGULATOR SPRI...

Страница 23: ...one revolution takes 84 sec and the heating value of the gas is 1050 Btu ft3 Proceed as follows a 84 sec to complete one revolution b 3600 84 42 9 c 42 9 x 2 85 8 ft3 of gas flow hr d 85 8 x 1050 90...

Страница 24: ...oblem in the case of a gas component failure To initiate the component test procedure ensure that there arenoUIinputstothecontrol theABCDconnectorcan beremoved fromthe Infinitycontrol boardfor thisope...

Страница 25: ...eading Indoor air CFM must be within the normal operating range of the unit TO USE COOLING CHARGING CHARTS Take the liquid line temperature and read the manifold pressure gauges Refer to the chart to...

Страница 26: ...578 41 39 36 30 384 108 103 98 88 2647 42 40 37 31 394 110 105 100 90 2716 44 41 38 32 404 112 107 102 92 2785 45 42 39 33 414 114 109 104 94 2854 46 43 40 34 424 116 111 106 96 2923 47 44 41 35 434 1...

Страница 27: ...nsional size and type as originally installed See Table 1 for recommended filter sizes Inspect air filter s at least once each month and replace throwaway type or clean cleanable type at least twice d...

Страница 28: ...ly After inspecting the electrical controls and wiring replace all the panels Start the unit and observe at least one complete cooling cycle to ensure proper operation If discrepancies are observed in...

Страница 29: ...performing any service that may risk exposure ofcompressor oil to the roof take appropriate precautions to protect roofing Procedures which risk oil leakage include but are not limited to compressor r...

Страница 30: ...mand for compressor operation the contactor may be stuck closed or there is a wiring error The control will flash the appropriate fault code COMPRESSOR THERMAL CUTOUT If the control senses the compres...

Страница 31: ...should fail low ambient cooling will not be allowed Defrost will occur at each time interval during heating operation but will terminate after 5 minutes If there is a thermistor out of range error de...

Страница 32: ...h 520 psig low side retard S Use hoses with 750 psig service pressure rating S Leak detectors should be designed to detect HFC refrigerant S Puron as with other HFCs is only compatible with POE oils S...

Страница 33: ...operates continuously Dirty air filter Replace filter Unit undersized for load Decrease load or increase unit size UI temperature set too low Reset UI setting Low refrigerant charge Locate leak repair...

Страница 34: ...unit 2 Check gas valve Inducer pressure switch not closing 1 Check pressure switch wires connections and tubing Repair or replace if necessary Inadequate heating Dirty air filter Clean or replace fil...

Страница 35: ...ESS III START UP ELECTRICAL SUPPLY VOLTAGE __________________________________ COMPRESSOR AMPS_________________________________ INDOOR EVAPORATOR FAN AMPS___________ TEMPERATURES OUTDOOR CONDENSER AIR...

Страница 36: ...W Morris St S Indianapolis IN 46231 Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations Catalog No 48DU 2SI Replaces 48DU 1SI Print...

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