Bryant 664B Installation Instructions Manual
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Bryant 664B Installation Instructions Manual

Bryant 664B Installation Instructions Manual

13 seer single--packaged heat pump system with r--22 refrigerant single and three phase 2--5 nominal tons (sizes 024--060)
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664B
13 SEER SINGLE- - PACKAGED HEAT PUMP SYSTEM
WITH R- - 22 REFRIGERANT SINGLE AND THREE PHASE
2- -5 NOMINAL TONS (SIZES 024- -060)
NOTE:
Read the entire instruction manual before starting the
installation.
TABLE OF CONTENTS
SAFETY CONSIDERATIONS
INTRODUCTION
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RECEIVING AND INSTALLATION
Check Equipment
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Identify Unit
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspect Shipment
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Provide Unit Support
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Slab Mount
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ground Mount
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Provide Clearances
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Place Unit
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Select and Install Ductwork
Configuring Units for Downflow (Vertical) Discharge
Connect Condensate Drain
Install Electrical Connections
High- -Voltage Connections
Routing Power Leads Into Unit
Connecting Ground Lead to Unit Ground
Routing Control Power Wires
Accessory Electric Heat Wiring
PRE- -START- -UP
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
START- -UP
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Check for Refrigerant Leaks
Start- -Up Cooling and Make Adjustments
Checking Cooling and Heating Control Operation
Refrigerant Charge
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
No Charge
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low Charge Cooling
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Heating Mode Charge
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Indoor Airflow and Airflow Adjustments
Unit Controls
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
High- -Pressure Relief Valve
Loss- -of- -Charge Switch
Compressor Overload
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Compressor Rotation
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sequence of Operation
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Fan Operation
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Installation Instructions
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PAGE
2
2
2- -7
2
2
2
2
2
2
2
2
2
3
3
6
6
Cooling Operation
6
Heating Operation
6
Continuous Fan
6
Defrost
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6
Electric Resistance Heating
7
MAINTENANCE
8- -17
Air Filter
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8
Unit Top Removal
8
Indoor Blower and Motor
8
Outdoor Coil, Indoor Coil, and Condensate Drain Pan
8
Outdoor Fan
8
Electrical Controls and Wiring
8
Refrigerant Circuit
8
Indoor Airflow
9
Metering Devices
9
Liquid Line Strainers
9
High Flow Valves
9
TROUBLESHOOTING
10
START- -UP CHECKLIST
10
10
10
1
Fig. 1 - - Unit 664B
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Summary of Contents for Bryant 664B

  • Page 1 TROUBLESHOOTING START- -UP CHECKLIST Fig. 1 - - Unit 664B ............

  • Page 2: Safety Considerations

    Sheet metal parts may have sharp edges or burrs. Use care and wear appropriate clothing. INTRODUCTION The 664B packaged heat pump is fully self- -contained and designed for outdoor installation (See Fig. 1). Standard units are shipped in a horizontal- -discharge configuration for installation on a ground- -level slab or directly on the ground if local codes permit.

  • Page 3: Configuring Units For Downflow (Vertical) Discharge

    5. Secure all ducts to building structure. Flash, weatherproof, and vibration- -isolate duct openings in wall or roof according to good construction practices. Fig. 6 shows a typical duct system with 664B unit installed. CONFIGURING UNITS FOR DOWNFLOW (VERTICAL) DISCHARGE...
  • Page 4 A08414 Fig. 5 - - Unit Base Dimensions, 664B024- -060...
  • Page 5 UNIT SIZE NOMINAL CAPACITY (ton) OPERATING WEIGHT (lb) (kg) COMPRESSOR REFRIGERANT (R- - 22) Quantity (lb) (kg) REFRIGERANT METERING DEVICE Orifice ID (in.) Orifice OD (in.) CONDENSER COIL Rows…Fins/in. Face Area (sq. ft.) CONDENSER FAN Nominal Cfm Diameter (in.) (mm) Motor HP (RPM) EVAPORATOR COIL Rows…Fins/in.

  • Page 6: Install Electrical Connections

    Table 2 – Minimum Airflow for Safe Electric Heater Operation Minimum Airflow (CFM) Unit Size 7.5kW 10kW 1050 1050 1050 1050 1050 Step 7 — Install Electrical Connections WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death.

  • Page 7: Pre- -Start- -Up

    Fig. 8 - - Control Box Wiring GROUND LEAD SINGLE-PHASE CONNECTIONS 3-PHASE TO DISCONNECT CONNECTIONS PER NEC TO DISCONNECT PER NEC Fig. 9 - - Line Power Connections Thermostat and subbase Unit Control Fig. 10 - - Control Connections (Sizes 024- -042) HEATER LOW VOLTAGE PLUG A05388...

  • Page 8: Checking Cooling And Heating Control Operation

    Step 3 — Refrigerant Charge Refrigerant Charge — Amount of refrigerant charge is listed on unit nameplate and in Table 1. Refer to Bryant Refrigerant Service Techniques Manual, Refrigerants section. Unit panels must be in place when unit is operating during charging procedure. Unit must operate a minimum of 15 minutes before checking charge.

  • Page 9: Indoor Airflow And Airflow Adjustments

    Step 4 — Indoor Airflow and Airflow Adjust- ments NOTE: For cooling operation, the recommended airflow is 350 to 450 cfm for each 12,000 Btuh of rated cooling capacity. Table 4 shows dry coil air delivery for horizontal discharge units. Tables 6- -8 show pressure drops.

  • Page 10: Unit Controls

    IFR (provided there is not a call for cooling). The contacts open and the IFM is deenergized. The IFM will be energized only when there is a call for cooling, in heat pump heating mode or if the unit is equipped with accessory electric heat, the indoor- -fan motor will also run while the accessory electric heat is energized.
  • Page 11 A08209 Fig. 13 - - Typical Single- -Phase Unit Electrical Diagram (Sizes 024- -042)
  • Page 12 A06405 Fig. 14 - - Typical Single- -Phase Unit Electrical Diagram (Sizes 048- -060)
  • Page 13 A06325 Fig. 15 - - Typical Three- -Phase Unit Electrical Diagram (Sizes 030- -042)
  • Page 14 A06326 Fig. 16 - - Typical Three- -Phase Unit Electrical Diagram (Sizes 048- -060)
  • Page 15 A05209 Fig. 17 - - Single- -Phase Accessory Electric Heater Wiring A06327 Fig. 18 - - Three- -Phase Accessory Electric Heater Wiring...
  • Page 16 Table 4 – Dry Coil Air Delivery* Horizontal Discharge 230 VOLT HORIZONTAL DISCHARGE UNIT SPEED SIZE DELIVERY Watts — — Watts — — Watts — — Watts — — Watts 1344 Watts — — Watts 1440 Watts — — Watts —...

  • Page 17: Maintenance

    OD Temp. (°F) — — — — — — — — — — — — — — — — — — — — — — — OD Temp. (°C) — — — — — — — — — — — —...

  • Page 18: Unit Top Removal

    Only qualified service personnel should perform maintenance and service procedures that require unit top removal. Refer to the following top removal procedures: 1. Remove screws on unit top cover surface. (Save all screws.) 2. Remove screws on unit top cover flange. (Save all screws.) 3.

  • Page 19: Troubleshooting

    Step 4 — Outdoor Coil, Indoor Coil, and Condensate Drain Pan Inspect the condenser coil, evaporator coil, and condensate drain pan at least once each year. The coils are easily cleaned when dry; therefore, inspect and clean the coils either before or after each cooling season. Remove all obstructions, including weeds and shrubs, that interfere with the airflow through the condenser coil.

  • Page 20: Heating Cycle

    2. The refrigerant then feeds the outdoor coil through the Acutrol metering device on each circuit. Fig. 20 - - Typical Heat Pump Operation, Heating Mode OUTDOOR COIL Check Valves Closed...
  • Page 21 SYMPTOM Compressor and outdoor fan will not start Compressor will not start but condenser fan runs Three- -phase scroll compressor (size 030- - 060 unit) has a low pressure differential Compressor cycles (other than normally sat- isfying) cooling/heating calls Compressor operates continuously Excessive head pressure Head pressure too low Excessive suction pressure...

  • Page 22: Preliminary Information

    {Measured at liquid line leaving outdoor coil E2008 Bryant Heating & Cooling Systems D 7310 W. Morris St. D Indianapolis, IN 46231 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

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