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9.1 AIRFLOW PERFORMANCE DATA

10.0 SEQUENCE OF OPERATION

10.1 COOLING (cooling only or heat pump)

• In a serial communicating network:

When the thermostat “calls for cooling,” a cooling command is sent via the serial net-
work to the air handler and outdoor unit.

• Using conventional 24VAC thermostat wiring:

When the thermostat “calls for cooling,” the circuit between R and Y is completed.

A “call for cooling” causes:
1) The blower to start.
2) The compressor relay to close energizing the compressor.
3) The outdoor fan motor to start.

10.2 HEATING (electric heat only)

• In a serial communicating network:

When the thermostat “calls for heat,” a heating command is sent via the serial net-
work to the air handler.

• Using conventional 24VAC thermostat wiring:

When the thermostat “calls for heat,” the circuit between R and W is completed.

A “call for heat” causes:
1) The heater sequencer (HR1) energizes.
2) A timed delay begins.
3) The indoor blower motor (IBM) starts.
4) The heating elements (HE) energize.

10.3 DEFROST

• For sequence of operation for defrost controls, see outdoor heat pump installation

instructions.

10.4 EMERGENCY HEAT (Heating of Heat Pump)

• If selector switch on thermostat is set to the emergency heat position, the heat pump

will be locked out of the heating circuit, and all heating will be electric heat.

 

Size

Motor HP

Thermostat 

Input

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

550

575

600

600

625

625

625

600

575

550

455

540

620

695

760

825

885

940

985

1030

40

55

70

85

105

120

135

150

170

185

775

775

775

800

800

825

825

825

825

825

540

615

685

750

810

870

925

975

1020

1065

70

90

115

135

160

180

205

225

250

270

875

900

900

900

900

900

900

900

900

875

570

645

715

775

835

890

945

990

1030

1070

90

110

135

155

180

200

220

240

265

285

1175

1200

1200

1200

1225

1225

1200

1200

1200

1200

700

760

820

875

925

970

1015

1055

1095

1125

180

205

235

265

290

320

345

370

400

425

1200

1175

1175

1200

1225

1225

1200

1200

1200

1200

535

595

650

700

750

800

840

880

915

950

130

160

190

220

250

280

305

335

365

390

1625

1650

1650

1650

1675

1675

1675

1650

1650

1625

635

690

745

795

840

880

915

950

980

1005

245

295

340

385

425

465

500

535

565

590

1375

1375

1375

1375

1375

1375

1375

1350

1350

1350

575

630

685

735

780

825

865

905

945

980

160

185

215

245

275

305

335

365

395

430

1650

1675

1700

1700

1700

1700

1700

1700

1700

1700

690

740

790

835

875

915

955

985

1015

1045

290

335

375

415

455

495

530

560

595

625

5-ton

Y1

Y2

230 Volts

Cabinet 

Size

Nominal 

Airflow 

CFM

CFM 
RPM 

WATTS

Blower

10x8

 1/3

External Static Pressure - In. W.C.

625

775

3-ton

Y1

Y2

900

1200

Nominal 

Cooling 

Capacity

21

21

Y1

 3/4

1200

1625

1375

1675

 1/2

11x11

 3/4

11x11

IMPORTANT:

 Observe airflow operating limits. Do not operate above 1.0 in. W.C. system external static.

2-ton

Y1

Y2

4-ton

Y2

24

24

10x8

 

CFM 
RPM 
WATTS
CFM 
RPM 
WATTS
CFM 

RPM 
WATTS
CFM 
RPM 
WATTS
CFM 
RPM 
WATTS
CFM 
RPM 
WATTS
CFM 
RPM 
WATTS
CFM 
RPM 
WATTS

RHPL-HM

HM2421

HM3621

HM4824

HM6024

Содержание RHPL-HM2421JC

Страница 1: ...as an aid to qualified licensed service personnel for proper installation adjustment and operation of this unit Read these instructions thoroughly before attempting installation or operation Failure...

Страница 2: ...Board LED to Determine Blower CFM 21 5 13 Cooling Airflow Settings 21 5 14 Cooling Airflow Adjustments with Single Stage Condensing Units 22 5 15 Heating Airflow Adjustment 22 5 16 Airflow Adjustment...

Страница 3: ...ts such as dirt dust fumes and odors into the home causing property damage Fumes and odors from toxic volatile or flammable chemicals as well as automobile exhaust and carbon monoxide CO can be drawn...

Страница 4: ...d below are those chemicals and substances commonly associated with similar equipment in our industry and other manufacturers Glass Wool Fiberglass Insulation Carbon Monoxide CO Formaldehyde Benzene M...

Страница 5: ...e control module CAUTION SEE SECTION 13 2 INDOOR COIL DRAIN PAN DRAIN LINE In compliance with recognized codes it is recommended that an auxiliary drain pan be installed under all evaporator coils or...

Страница 6: ...ion of toxic fumes and odors including carbon monoxide from migrating into the living space If air moving equipment or ductwork is located in spaces containing fuel burning appliances such as water he...

Страница 7: ...stall the unit in such a way as to allow necessary access to the coil filter rack and blower control compartment Install the unit in a level position to ensure proper condensate drainage Make sure uni...

Страница 8: ...IR OPENING UPFLOW UNIT SHOWN UNIT MAY BE INSTALLED UPFLOW DOWNFLOW HORIZONTAL RIGHT OR LEFT AIR SUPPLY Model Return Air Opening Return Air Opening Cabinet Size Width Inches Depth Length Inches 21 193...

Страница 9: ...for Combustible Floor Base RXHB XX Units with electric heating kW equal to or less than the values listed in the table do not require a combustible floor base Vertical units require clearance on at le...

Страница 10: ...ctory shipped for vertical upflow and horizontal left application If return air is to be ducted install duct flush with floor Use fireproof resilient gasket 1 8 to 1 4 in thick between duct unit and f...

Страница 11: ...lug Tighten lug as tight as possible while holding circuit breaker Check wires and make sure each wire is secure and none are loose Repeat for left wire bundle in left top circuit breaker lug Replace...

Страница 12: ...ason we recommend the fol lowing for all air handler applications but special attention should be paid to those installed in unconditioned spaces Duct sizing and airflow are critical and based on the...

Страница 13: ...lso be accomplished by attaching ground wire s to ground lug s provided in the unit wiring compartment Ground lug s are located close to wire entrance on left side of unit upflow Lug s may be moved to...

Страница 14: ...9 44 RXBH 1724 10J Single 208 240 1 60 5 4 7 2 26 0 30 0 4 9 40 45 39 44 Single 208 240 1 60 10 8 14 4 51 9 60 0 4 9 80 90 72 82 RXBH 1724A15J MULTI CKT 1 208 240 1 60 3 6 4 8 17 3 20 0 4 9 30 35 28 3...

Страница 15: ...onnections to the 24VAC thermostat wires If any connections are made to the G W1 W2 Y1 Y2 B or ODD wires the Comfort Control2 control will assume the control is being used with a tra ditional thermost...

Страница 16: ...bias dip switches should be on 24V AC power on R C must be present at the control for the air handler to operate reference Figure 9 Line voltage must be present at the control for indoor blower opera...

Страница 17: ...erial communications the airflow can only be adjusted usin the serial communicating thermostat or a service tool To adjust the airflow go to the airflow adjustment menu and select the desired adjustme...

Страница 18: ...sing ODD do NOT use any of the alternate profiles Only use the factory default profile Use of the alternate profiles with ODD will decrease energy efficiency with no gain in comfort Profile A Factory...

Страница 19: ...ler Y1 E W1 TypicalTwo StageThermostat PRL Heat Pump Outdoor Unit Y2 C R B Y2 Field Installed Line Voltage WIRING INFORMATION Factory Standard ODD R Y1 Y2 G W2 R Y1 C L D Y Y BL BL R BR W R PR DHM L F...

Страница 20: ...Y R C Y W BL Humidistat G W1 Y2 G BK W BK BL G Y BR R Y BL FIGURE 16 TYPICAL SINGLE STAGE THERMOSTAT SINGLE STAGE STRAIGHT COOLING WITH ELECTRIC HEAT Y2 AIR FLOW G W2 C R HPL Air Handler Single Stage...

Страница 21: ...d control wiring inside unit pull excess control wire to outside of unit and provide strain relief for field wiring on inside of cabinet at point wiring penetrates cabinet Make sure after installation...

Страница 22: ...IRFLOW The HPL series of air handlers are factory configured to for proper airflow The cooling airflow CAF is fixed and the DIP switch settings have no effect on airflow The factory setti is Cooling A...

Страница 23: ...ield adjusted Electric Heat Airflow Thermostat Input 2 ton 3 ton 4 ton 5 ton W1 or W2 800 CFM 1200 CFM 1600 CFM 1800 CFM 6 8 Cooling Mode Dehumidification CONVENTIONAL THERMOSTAT WIRING RHPL HM2421JC...

Страница 24: ...to increase latent capacity The HPL air handler is programmed to provide maximum efficiency and optimum humidity removal When high humidity is detected the air handler reduces cooling airflow defined...

Страница 25: ...ata is obsolete If system will not operate order new memory card to update system information 68 ECM No Signal The ECM motor is not communicating to the air handler control board Make sure the ECM mot...

Страница 26: ...MPORTANT Flanges around blower opening for attaching supply duct must be up out of blower discharge even if not used so they do not restrict airflow from blower IMPORTANT If an elbow is included in th...

Страница 27: ...tside of coil box 7 2 CONDENSATE DRAIN TUBING Consult local codes or ordinances for specific requirements IMPORTANT When making drain fitting connections to the drain pan use a thin layer of Teflon pa...

Страница 28: ...Installed If a remote filter is installed it should be sized for a maximum of 300 feet min air veloci ty for the CFM required IMPORTANT Do not operate system without a filter A filter is required to p...

Страница 29: ...7 0 8 0 9 1 0 550 575 600 600 625 625 625 600 575 550 455 540 620 695 760 825 885 940 985 1030 40 55 70 85 105 120 135 150 170 185 775 775 775 800 800 825 825 825 825 825 540 615 685 750 810 870 925...

Страница 30: ...c resistance heat is BTUH Heating Watts x 3 412 Where 1 kW 1000 Watts 3 412 Btuh Watt 11 3 CALCULATING AIRFLOW CFM The formula for calculating airflow using temperature rise and heating BTUH for units...

Страница 31: ...n been provided under the unit with separate drain Units installed above a finished ceiling Is condensate line properly sized run trapped pitched and tested Is ductwork correctly sized run taped and i...

Страница 32: ...it would become necessary to clean the blower motor and wheel If it becomes necessary to remove the blower assembly from the unit see instruc tions on removal and disassembly of motor blower and heate...

Страница 33: ...aced as they were check wiring diagram if necessary Tighten supply power wiring securely to terminals lugs Make sure wiring is within cabinet and will not interfere with access door Make sure proper s...

Страница 34: ...the motor has locking tabs It has been proven that by applying excessive force to the A C cable half of the connector it is possible to force the connector in backwards It will not seat and click prop...

Страница 35: ...t is necessary to order by part number and include with the order the complete model number and serial number from the unit data plate See parts list for unit component part numbers 15 0 ACCESSORIES K...

Страница 36: ...ERNAL FILTER RACK RXHF B21 B24 B 1 50 A Model Cabinet Size Filter Size Part Number A B 21 20 x 20 RXHF B21 20 40 20 77 24 25 x 20 RXHF B24 25 00 21 04 Accommodate 1 filter Auxiliary Horizontal Overflo...

Страница 37: ...37 FIGURE 29 AIR HANDLER EQUIPPED WITH Serial Communication WIRING DIAGRAM...

Страница 38: ...38...

Страница 39: ...39...

Страница 40: ...40 CM 0411...

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