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Bryant SINGLE PACKAGED HEAT PUMP UNITS 657Aの取扱説明書

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  • Bryant SINGLE PACKAGED HEAT PUMP UNITS 657A - page 1

    NOTE: Read the entire instruction manual before starting the installation. This symbol → indicates a change since the last issue. TABLE OF CONTENTS SAFETY CONSIDERATIONS .....................................................1 Introduction ....................................................................................2 RECEIVING AND INSTALLATI ...

  • Bryant SINGLE PACKAGED HEAT PUMP UNITS 657A - page 2

    severe personal injury or death. WARNING signifies a hazard which could result in personal injury or death. CAUTION is used to identify unsafe practices which would result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation. These instru ...

  • Bryant SINGLE PACKAGED HEAT PUMP UNITS 657A - page 3

    Forward claim papers directly to transportation company. Manu- facturer is not responsible for any damage incurred in transit. Check all items against shipping list. Immediately notify the nearest distributor if any item is missing. To prevent loss or damage, leave all parts in original packages until installation. II. PROVIDE UNIT SUPPORT A. ROOF ...

  • Bryant SINGLE PACKAGED HEAT PUMP UNITS 657A - page 4

    outdoor coil-air inlet to prevent obstruction of airflow by grass or shrubs. Do not secure the unit to the slab except when required by local codes. III. PROVIDE CLEARANCES The required minimum service clearances are shown in Fig. 2-5. Adequate ventilation and outdoor air must be provided. The outdoor fan pushes air through the outdoor coil and dis ...

  • Bryant SINGLE PACKAGED HEAT PUMP UNITS 657A - page 5

    should be at least 4 in. above the highest expected water and runoff levels. Do not use unit if it has been under water. IV. SELECT AND INSTALL DUCTWORK The design and installation of the duct system must be in accordance with the standards of the NFPA (National Fire Protec- tion Association) for installation of nonresidence-type air condi- tioning ...

  • Bryant SINGLE PACKAGED HEAT PUMP UNITS 657A - page 6

    filter rack installed in the return-air side of the unit. Recommended sizes for filters are shown in Table 1. 2. Avoid abrupt duct size increases and reductions. Abrupt change in duct size adversely affects air performance. IMPORTANT: Use flexible connectors between ductwork and unit to prevent transmission of vibration. Use suitable gaskets to ens ...

  • Bryant SINGLE PACKAGED HEAT PUMP UNITS 657A - page 7

    to prevent damage when moving the unit. Unit must remain in an upright position during all rigging and moving operations. The unit must be level for proper condensate drainage; the ground-level pad or accessory roof curb must be level before setting the unit in place. When a field-fabricated support is used, be sure that the support is level and th ...

  • Bryant SINGLE PACKAGED HEAT PUMP UNITS 657A - page 8

    WARNING: Secure screws and paint protectors solidly against unit base to hold lifting brackets in position. Never use lifting brackets when the temperature is below -10 F (-23 C). Never exceed 200 lbs per bracket of lifting force. Never use lifting brackets for lifting other models of air conditioning units. Lifting point should be directly over th ...

  • Bryant SINGLE PACKAGED HEAT PUMP UNITS 657A - page 9

    WARNING: Lifting point should be directly over the center of gravity for the unit. Failure to follow this warning could result in personal injury or death. VI. CONNECT CONDENSATE DRAIN NOTE: When installing condensate drain connection be sure to comply with local codes and restrictions. Unit disposes of condensate through a 3/4-in. NPT fitting whic ...

  • Bryant SINGLE PACKAGED HEAT PUMP UNITS 657A - page 10

    Fig. 13—Removing Insulation and Vertical Duct Cover C95015 Fig. 14—Indoor Blower Access Panel C950016 INDOOR BLOWER ACCESS P ANEL (REMOVE SCREWS) Fig. 15—Converting Blower Assembly to Vertical Airflow C950010 PLUG ASSEMBLIES RACEWA Y FILLER BRACKET BLOWER SHELF HORIZONT AL DUCT OPENING —10— ...

  • Bryant SINGLE PACKAGED HEAT PUMP UNITS 657A - page 11

    flexible duct is used, insert a sheet metal sleeve inside duct. Heat resistant duct connector (or sheet metal sleeve) must extend 24-in. from the unit discharge connection flange into the ductwork. ACCESSORY DUCT FLANGE KIT INSTALLATION- 1. Mark hole locations (See instructions included in Flange Kit). CAUTION: Do not drill deeper than 1/2–in. in ...

  • Bryant SINGLE PACKAGED HEAT PUMP UNITS 657A - page 12

    WARNING: Before performing service or maintenance operations on the system, turn off main power to unit and install lockout tag or electrical shock could result. 1. Open all electrical disconnects and install lockout tag before starting any service work. 2. Remove indoor coil access panel (See Fig. 12). 3. Locate lances in unit base insulation that ...

  • Bryant SINGLE PACKAGED HEAT PUMP UNITS 657A - page 13

    securing the cover to the unit base and slide out the cover. Discard the cover. Install filler bracket removed in Step 7. 10. If unit ductwork is to be attached to vertical opening flanges on the unit base (jackstand applications only), do so at this time. 11. It is recommended that the unit base insulation around the perimeter of the vertical open ...

  • Bryant SINGLE PACKAGED HEAT PUMP UNITS 657A - page 14

    WARNING: Before performing service or maintenance operations on the system, turn off main power to unit and install lockout tag or electrical shock could result. 1. Open all electrical disconnects and install lockout tag before starting any service work. 2. Remove indoor coil access panel (See Fig. 12). 3. Locate lances in unit base insulation that ...

  • Bryant SINGLE PACKAGED HEAT PUMP UNITS 657A - page 15

    3. ROUTING CONTROL POWER WIRES - STD NON- ECM UNITS (24 v) -Form a drip-loop with the thermostat leads before routing them into the unit. Route the thermostat leads through grommeted hole provided in unit (see Fig. 21) into unit control power splice box. Connect thermostat leads to unit control power leads as shown in Fig. 23. 4. ROUTING CONTROL PO ...

  • Bryant SINGLE PACKAGED HEAT PUMP UNITS 657A - page 16

    b. Inspect for oil at all refrigerant tubing connections and on unit base. Detecting oil generally indicates a refrig- erant leak. Leak test all refrigerant tubing connections using electronic leak detector, halide torch, or liquid- soap solution. If a refrigerant leak is detected, see Check for Refrigerant Leaks section. Fig. 22—Wiring Splice Bo ...

  • Bryant SINGLE PACKAGED HEAT PUMP UNITS 657A - page 17

    c. Inspect all field- and factory-wiring connections. Be sure that connections are completed and tight. d. Ensure electrical wiring does not contact refrigerant tubes or sharp metal edges. e. Inspect coil fins. If damaged during shipping and han- dling, carefully straighten fins with a fin comb. 4. Verify the following conditions a. Make sure that ...

  • Bryant SINGLE PACKAGED HEAT PUMP UNITS 657A - page 18

    B. START UP AND MAKE ADJUSTMENTS CAUTION: Complete the required procedures given in the Pre-Start- Up section before starting the unit. Do not jumper any safety devices when operating the unit. Do not operate the compressor when the outdoor temperature is below 40°F (unless accessory low-ambient kit is installed). Do not rapid-cycle the compressor ...

  • Bryant SINGLE PACKAGED HEAT PUMP UNITS 657A - page 19

    Fig. 26—Wiring Diagram–024 to 042 (208/230-60-1) C95037 —19— ...

  • Bryant SINGLE PACKAGED HEAT PUMP UNITS 657A - page 20

    Fig. 27—Wiring Diagram–048 to 060 (208/230-60-1 with ECM Indoor) C95038 —20— ...

  • Bryant SINGLE PACKAGED HEAT PUMP UNITS 657A - page 21

    NOTE: Allow system to operate in the cooling mode for a minimum of 10 minutes before checking or adjusting refrigerant charge. CAUTION: When evaluating the refrigerant charge, an indicated adjustment to the specified factory charge must always be very minimal. If a substantial adjustment is indicated, an abnormal condition exists somewhere in the c ...

  • Bryant SINGLE PACKAGED HEAT PUMP UNITS 657A - page 22

    5. AC/HP TIME DELAY (GRY) - Four motor operation delay options are provided to customize system operation. See listing below: Unit Controls— All compressors have the following internal- protection controls. 1. High-Pressure Relief Valve - This valve opens when the pressure differential between the low and high side becomes excessive. 2. Compresso ...

  • Bryant SINGLE PACKAGED HEAT PUMP UNITS 657A - page 23

    remains energized for the delay timing. When the fan switch is in AUTO, the fan cycles with either the call for heating or cooling. Cooling- On a call for cooling, 24 v is supplied to the compressor contactor (C) and IFM simultaneously through the ’’Y’’ and ’’G’’ terminals of the thermostat. Energizing the contactor closes the norma ...

  • Bryant SINGLE PACKAGED HEAT PUMP UNITS 657A - page 24

    1. Inspect air filter(s) each month. Clean or replace when necessary. 2. Inspect indoor coil, drain pan, and condensate drain at least each cooling season for cleanliness. Clean when necessary. 3. Inspect blower motor and wheel for cleanliness and check lubrication each heating and cooling season. Clean when necessary. 4. Check electrical connectio ...

  • Bryant SINGLE PACKAGED HEAT PUMP UNITS 657A - page 25

    WARNING: Disconnect and tag electrical power to the unit before cleaning the blower motor and wheel. Failure to adhere to this warning could cause personal injury or death. To clean the blower motor and wheel: 1. Remove and disassemble blower assembly as follows: a. Remove unit access panel. b. For PSC Blower Motors Disconnect motor lead from indoo ...

  • Bryant SINGLE PACKAGED HEAT PUMP UNITS 657A - page 26

    c. On all units remove blower assembly from unit. Remove screws securing blower and slide assembly out. Be careful not to tear insulation in blower compartment. d. Ensure proper reassembly by marking blower wheel and motor in relation to blower housing before disassembly. e. Loosen setscrew(s) that secures wheel to motor shaft, remove screws that s ...

  • Bryant SINGLE PACKAGED HEAT PUMP UNITS 657A - page 27

    f. Reassemble motor into housing. Be sure setscrews are tightened on motor shaft flats and not on round part of shaft. g. Reinstall unit access panel. 4. Restore electrical power to unit. Start unit and check for proper blower rotation and motor speeds during heating and cooling cycles. D. OUTDOOR COIL, INDOOR COIL, AND CONDEN- SATE DRAIN PAN Inspe ...

  • Bryant SINGLE PACKAGED HEAT PUMP UNITS 657A - page 28

    E. OUTDOOR FAN CAUTION: Keep the outdoor fan free from all obstruc- tions to ensure proper cooling operation. Never place articles on top of the unit. Damage to unit may result. 1. Remove 2 screws at bottom of outdoor air intake grille and remove plastic grille. 2. Inspect the fan blades for cracks or bends. 3. If fan needs to be removed, loosen th ...

  • Bryant SINGLE PACKAGED HEAT PUMP UNITS 657A - page 29

    G. REFRIGERANT CIRCUIT Inspect all refrigerant tubing connections and the unit base for oil accumulations annually. Detecting oil generally indicates a refrig- erant leak. WARNING: System under pressure. Relieve pressure and recover all refrigerant before system repair or final unit disposal to avoid personal injury or death. Use all service ports ...

  • Bryant SINGLE PACKAGED HEAT PUMP UNITS 657A - page 30

    Fig. 32—Typical Heat Pump Operation-Heating Mode C95045 STRAINER ACCUMULA TOR COMPRESSOR STRAINER LCS OUTDOOR COIL INDOOR COIL A B D C Check V alves A Open B Closed C Open D Closed LEGEND LCS Loss of Charge Switch Acutrol Metering Device Check V alve (Arrow indicates direction of flow) HEA TING CYCLE 1. Hot gas from compressor flows through the 4 ...

  • Bryant SINGLE PACKAGED HEAT PUMP UNITS 657A - page 31

    TABLE 14—TROUBLESHOOTING CHART SYMPTOM CAUSE REMEDY Compressor and outdoor fan will not start Power Failure Call power company Fuse blown or circuit breaker tripped Replace fuse or reset circuit breaker Defective thermostat, contactor, transformer, control relay, defrost board, or high pressure or loss- of-charge/low pressure switch Replace compo ...

  • Bryant SINGLE PACKAGED HEAT PUMP UNITS 657A - page 32

    START-UP CHECKLIST (REMOVE AND STORE IN JOB FILE) I. PRELIMINARY INFORMATION Model No ............................................................................................................................................................. Serial No ................................................................................................ ...

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