Bryant 677C--A Installation Instructions Manual
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Bryant 677C--A Installation Instructions Manual

Bryant 677C--A Installation Instructions Manual

Preferred 14 seer single-packaged hybrid heat dual fuel system with puron (r-410a) refrigerant single and three phase 2--5 nominal tons (sizes 24--60)
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677C- - - - A
PREFERREDt 14 SEER SINGLE- - PACKAGED HYBRID HEATr
DUAL FUEL SYSTEM WITH PURONr (R- - 410A) REFRIGERANT
SINGLE AND THREE PHASE
2- - 5 NOMINAL TONS (SIZES 24- - 60)
NOTE:
Read the entire instruction manual before starting the
installation.
NOTE:
Installer: Make sure the Owner's Manual and Service
Instructions are left with the unit after installation.

TABLE OF CONTENTS

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Installation Instructions
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SAFETY CONSIDERATIONS
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Improper installation, adjustment, alteration, service maintenance,
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or use can cause explosion, fire, electrical shock, or other
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conditions which may cause death, personal injury, or property
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damage. Consult a qualified installer, service agency, or your
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distributor or branch for information or assistance. The qualified
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installer or agency must use factory- -authorized kits or accessories
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when modifying this product. Refer to the individual instructions
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packaged with the kits or accessories when installing.
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Follow all safety codes. Wear safety glasses, protective clothing,
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and work gloves. Have a fire extinguisher available. Read these
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instructions thoroughly and follow all warnings or cautions
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included in literature and attached to the unit. consult local
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building codes, the current editions of the National Fuel Gas Code
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(NFGC) NFPA 54/ANSI Z223.1, and the National Electrical Code
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(NEC) NFPA 70.
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In Canada refer to the current editions of the National Standards of
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Canada CAN/CSA- -B149.1 and .2 Natural Gas and Propane
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Installation codes, and Canadian Electrical Code CSA C22.1
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Recognize safety information. This is the safety- -alert symbol
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When you see this symbol on the unit and in instructions or manu-
als, be alert to the potential for personal injury. Understand these
signal words: DANGER, WARNING, and CAUTION. These
words are used with the safety- -alert symbol. DANGER identifies
the most serious hazards which will result in severe personal injury
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Fig. 1 - - Unit 677C- -- -A
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  • Page 1: Table Of Contents

    677C- - - - A PREFERREDt 14 SEER SINGLE- - PACKAGED HYBRID HEATr DUAL FUEL SYSTEM WITH PURONr (R- - 410A) REFRIGERANT SINGLE AND THREE PHASE 2- - 5 NOMINAL TONS (SIZES 24- - 60) Installation Instructions NOTE: Read the entire instruction manual before starting the installation.

  • Page 2: 677C

    or death. WARNING signifies hazards which could result in per- sonal injury or death. CAUTION is used to identify unsafe practic- es which may result in minor personal injury or product and prop- erty damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation.
  • Page 3 A09146 Fig. 2 - - 677C- -- -A24- -30 Unit Dimensions...
  • Page 4 A09147 Fig. 3 - - 677C- -- -A36- -60 Unit Dimensions...
  • Page 5 HVAC unit HVAC unit basepan base rails Sealing Gasket Roofcurb Anchor screw Wood nailer* Flashing field supplied Roofcurb* Insulation (field supplied) Roofing material field supplied Cant strip field supplied *Provided with roofcurb A09090 ROOF CURB DETAIL LARGE CURB CATALOG UNIT SIZE NUMBER CPRFCURB010A00 Small...

  • Page 6: Rig And Place Unit

    CAUTION - NOTICE TO RIGGERS PRUDENCE - AVIS AUX MANIPULATEUR ACCESS PANELS MUST BE IN PLACE WHEN RIGGING. PANNEAUX D'ACCES DOIT ÊTRE EN PLACE POUR MANIPULATION. Use top skid as spreader bar. / Utiliser la palette du haut comme barre de répartition SEE DETAIL A VOIR DÉTAIL A Unit...

  • Page 7: Connect Condensate Drain

    3. Attach a clevis of sufficient strength in the middle of the straps. Adjust the clevis location to ensure unit is lifted level with the ground. After the unit is placed on the roof curb or mounting pad, remove the top skid. Step 6 —...

  • Page 8: Fire Or Explosion Hazard

    Fig. 7 - - Sediment Trap 5. Install an accessible, external, manual main shutoff valve in gas supply pipe within 6 ft (1.8 m) of heating section. 6. Install ground- -joint union close to heating section between unit manual shutoff and external manual main shut- -off valve.
  • Page 9 UNIT SIZE 24040 NOMINAL CAPACITY --- ton SHIPPING WEIGHT --- lb. (kg) COMPRESSORS Quantity REFRIGERANT (R--- 410A) Quantity --- lb (kg) REFRIGERANT METERING DEVICE OUTDOOR ORIFICE 0.032 (2) in. (qty) (mm) OUTDOOR COIL 2...21 Rows...Fins/in. 13.6 Face Area--- sq ft OUTDOOR FAN Nominal Cfm 2500...

  • Page 10: Manifold Pressure

    Table 1 - - Physical Data - - Unit 677C- -- -A Cont’d) UNIT SIZE NOMINAL CAPACITY --- ton SHIPPING WEIGHT--- lb (kg) COMPRESSORS Quantity REFRIGERANT (R --- 410A) Quantity --- lb (kg ) REFRIGERANT METERING DEVICE OUTDOOR ORIFICE --- in. (qty) (mm) OUTDOOR COIL Rows...Fins --- in.

  • Page 11: Install Electrical Connections

    4. All units must have field- -supplied filters or accessory filter rack installed in the return- -air side of the unit. Recommended sizes for filters are shown in Table 1. 5. Size all ductwork for maximum required airflow (either heating or cooling) for unit being installed. Avoid abrupt duct size increases or decreases or performance may be affected.

  • Page 12: Balance Point Setting Thermidistat Or Hybrid Heat

    more than 100 ft (30.5 m) from the unit (as measured along the control voltage wires), use no. 16 AWG color- -coded, insulated (35_C minimum) wires. Locate the seven (eight on 3- -phase) low voltage thermostat leads in 24 volt splice box. See Fig. 10 for connection diagram. Run the low- -voltage leads from the thermostat, through the control wiring inlet hole grommet (Fig.

  • Page 13: Check For Refrigerant Leaks

    e. Ensure wires do not touch refrigerant tubing or sharp sheet metal edges. f. Inspect coil fins. If damaged during shipping and handling, carefully straighten fins with a fin comb. WARNING FIRE, EXPLOSION HAZARD Failure to follow this warning could result in personal injury, death or property damage.

  • Page 14: Checking Heating Control

    Pipe Plug Manifold Fig. 11 - - Burner Assembly BURNER FLAME Fig. 12 - - Monoport Burner Check Heating Control Start and check the unit for proper heating control operation as follows (see furnace lighting instructions located on the inside of the control access panel: 1.

  • Page 15: Check Burner Flame

    ON/OFF SWITCH REGULATOR SPRING (PROPANE - WHITE) NATURAL - SILVER) INLET PRESSURE TAP Fig. 13 - - Single- -Stage Gas Valve If larger adjustments are required, change main burner orifices following the recommendations of national and local codes. NOTE: All other appliances that use the same meter must be turned off when gas flow is measured at the meter.

  • Page 16: Start- -Up Cooling And Make Adjustments

    completes the control circuit. The direct- -spark ignition system cycles and the unit returns to normal heating operation. Table 5 – LED Indications STATUS CODE Normal Operation No Power Hardware Failure Limit Switch Fault Flame Sense Fault Four Consecutive Limit Switch Faults Ignition Lockout Fault Pressure Switch Fault Rollout Switch Fault...

  • Page 17: Continuous Fan Operation

    WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death. Before making any indoor wiring adjustments, shut off gas supply. Then disconnect electrical power to the unit and install lockout tag before changing blower speed. This unit has independent fan speeds for gas heating and cooling.
  • Page 18 OILL Table 7 – Filter Pressure Drop Table (IN. W.C.) FILTER SIZE in. (mm) 20X20X1 0.05 0.07 0.08 0.12 (508X508X25) 20X24X1 — — — — 0.09 (508X610x25 ) 24X30X1 — — — 0.04 0.05 (610X762x25) 24X36X1 — — — — —...
  • Page 19 Table 10 – Dry Coil Air Delivery* - - Horizontal and Downflow Discharge - - Unit 677C- -- -A24- -60 HEATING MOTOR UNIT RISE SPEED RANGE Med-Low 30 - 60 677C --- ---A24040 Medium (17 - 33 Med-High High Med-Low 25 - 55 677C --- ---A24060 Medium...
  • Page 20 Table 10 - - Dry Coil Air Delivery* - - Horizontal and Downflow Discharge - - Unit 677C- -- -A24- -60 Cont HEATING MOTOR UNIT RISE SPEED RANGE Med-Low 25 - 55 677C --- ---A30060 Medium (14 - 31 Med-High High Med-Low 25 - 55...
  • Page 21 Table 10 - - Dry Coil Air Delivery* - - Horizontal and Downflow Discharge - - Unit 677C- -- -A24- -60 Cont HEATING MOTOR UNIT RISE SPEED RANGE Med-Low 25 - 55 677C --- ---A42060 Medium (14 - 31 Med-High High Med-Low 35 - 65...
  • Page 22 Table 10 - - Dry Coil Air Delivery* - - Horizontal and Downflow Discharge - - Unit 677C- -- -A24- -60 Cont HEATING MOTOR UNIT RISE SPEED RANGE Med-Low 30 - 60 677C --- ---A48115 Medium (17 - 33 Med-High High Med-Low 35 - 65...
  • Page 23 Table 10 - - Dry Coil Air Delivery* - - Horizontal and Downflow Discharge - - Unit 677C- -- -A24- -60 Cont HEATING MOTOR UNIT RISE SPEED RANGE Med-Low 30 - 60 677C --- ---A60115 Medium (17 - 33 Med-High High Med-Low 35 - 65...
  • Page 24 A09068 Fig. 15 - - 208/230- -1- -60 Wiring Diagram, Unit 677C- -- -A...
  • Page 25 A09209 Fig. 16 - - 208/230- -3- -60 Wiring Diagram, Unit 677C- -- -A...
  • Page 26 A09099 Fig. 17 - - Cooling Charging Table- -Subcooling...

  • Page 27: Maintenance

    MAINTENANCE To ensure continuing high performance and to minimize the possibility of premature equipment failure, periodic maintenance must be performed on this equipment. This combination heating/cooling unit should be inspected at least once each year by a qualified service person. To troubleshoot cooling or heating of units, refer to Tables 10, 11 and 12.

  • Page 28: Flue Gas Passageways

    Fan Partition Flue Mounting Collector Inducer Burner Mounting Bracket Blower Rack Screw Housing Fig. 18 - - Blower Housing and Flue Collector Box Blower Access Compressor Panel Access Panel Fig. 19 - - Unit Access Panels Induced Draft (combustion air) Blower Assembly The induced- -draft blower assembly consists of the inducer motor, the blower housing, and the induced- -draft blower wheel.

  • Page 29: Outdoor Fan

    BLOWER HOUSING 2 SETSCREWS (HIDDEN) Fig. 20 - - Removal of Motor and Blower Wheel Fig. 21 - - Burner Rack Removed FEEDER TUBE STUB TUBE DEFROST THERMOSTAT Fig. 22 - - Defrost Thermostat Location Outdoor Fan CAUTION UNIT OPERATION HAZARD Failure to follow this caution may result in damage to unit components.

  • Page 30: Gas Input

    If no refrigerant leaks are found and low cooling performance is suspected, refer to the Checking and Adjusting Refrigerant Charge section. Gas Input The gas input does not require checking unless improper heating performance is suspected. If a problem exists, refer to the Start- -Up section.

  • Page 31: Explosion Hazard

    High- -Pressure Switch The high- -pressure switch is located in the discharge line and protects against excessive condenser coil pressure. It opens at 650 psig. High pressure may be caused by a dirty outdoor coil, failed fan motor, or outdoor air recirculation. To check switch: 1.
  • Page 32 HP S LEGEND HPS – High Pressure Switch LCS – Loss of Charge Switch Accurater ® Metering De vice Arrow indicates direction of flo w Fig. 25 - - Typical Heat Pump Operation, Cooling Mode HP S LEGEND HPS – High Pressure Switch LCS –...

  • Page 33: Troubleshooting

    replacing refrigerant components such as filter drier, pressure switch, metering device, coil, accumulator, or reversing valve. Synthetic Roof Precautionary Procedure 1. Cover extended roof working area with an impermeable polyethylene (plastic) drip cloth or tarp. Cover an approximate 10x10 ft (3x3 m) area. 2.
  • Page 34 Table 11 – Troubleshooting Guide - - Cooling or Heat Pump Heating Mode SYMPTOM CAUSE Power Failure Fuse blown or circuit breaker tripped Defective thermostat, contactor, transformer, or control Compressor and Outdoor fan will not relay start. Insufficient line voltage Incorrect or faulty wiring Thermostat setting too high Faulty wiring or loose connections in compressor circuit...
  • Page 35 SYMPTOM Water in gas line No power to furnace No 24--v power supply to control circuit Burners will not ignite Mis--wired or loose connections Misaligned spark electrodes No gas at main burners Dirty air filter Gas input to furnace too low Unit undersized for application Inadequate heating Restricted airflow...
  • Page 36 { Measured at liquid line leaving condenser. E2009 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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