Bryant 264A Installation Instructions Manual

Bryant 264A Installation Instructions Manual

Preferred series heat pump with puron refrigerant sizes 018 to 060 1-1/2 to 5 nominal tons

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264A / 265A
PREFERRED™ SERIES HEAT PUMP
WITH PURON® REFRIGERANT
SIZES 018 TO 060
1- - 1/2 TO 5 NOMINAL TONS

SAFETY CONSIDERATIONS

Improper
installation,
adjustment,
maintenance, or use can cause explosion, fire, electrical shock, or
other conditions which may cause death, personal injury, or
property damage. Consult a qualified installer, service agency, or
your distributor or branch for information or assistance. The
qualified installer or agency must use factory- -authorized kits or
accessories when modifying this product. Refer to the individual
instructions packaged with the kits or accessories when installing.
Follow all safety codes. Wear safety glasses, protective clothing,
and work gloves. Use quenching cloth for brazing operations.
Have fire extinguisher available. Read these instructions
thoroughly and follow all warnings or cautions included in
literature and attached to the unit. Consult local building codes
and National Electrical Code (NEC) for special requirements.
Recognize safety information. This is the safety- -alert symbol
When you see this symbol on the unit and in instructions or
manuals, 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 or death. WARNING signifies hazards
which could result in personal injury or death. CAUTION is
used to identify unsafe practices which may 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.
WARNING
!
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury
or death.
Before installing, modifying, or servicing system, main
electrical disconnect switch must be in the OFF position.
There may be more than 1 disconnect switch. Lock out and
tag switch with a suitable warning label.
IMPORTANT: Maximum liquid- -line size is 3/8- -in. OD for all
residential applications including long line.
IMPORTANT: Always install the factory- -supplied liquid- -line
filter drier. Obtain replacement filter driers from your distributor
or branch.

Installation Instructions

alteration,
service,
! !

INSTALLATION RECOMMENDATIONS

NOTE: In some cases noise in the living area has been traced
to gas pulsations from improper installation of equipment.
1. Locate unit away from windows, patios, decks, etc. where
unit operation sound may disturb customer.
2. Ensure that vapor and liquid tube diameters are appropri-
ate for unit capacity.
3. Run refrigerant tubes as directly as possible by avoiding
unnecessary turns and bends.
4. Leave some slack between structure and unit to absorb vi-
bration.
5. When passing refrigerant tubes through the wall, seal
opening with RTV or other pliable silicon- -based caulk.
(See Fig. 1.)
6. Avoid direct tubing contact with water pipes, duct work,
floor joists, wall studs, floors, and walls.
7. Do not suspend refrigerant tubing from joists and studs
with a rigid wire or strap which comes in direct contact
with tubing. (See Fig. 1.)
8. Ensure that tubing insulation is pliable and completely
surrounds vapor tube.
9. When necessary, use hanger straps which are 1 in. (25.4
mm) wide and conform to shape of tubing insulation. (See
Fig. 1.)
10. Isolate hanger straps from insulation by using metal
sleeves bent to conform to shape of insulation.
NOTE:
Avoid contact between tubing and structure
OUTDOOR WALL
CAULK
INSULATION
THROUGH THE WALL
HANGER STRAP
(AROUND VAPOR
TUBE ONLY)
1" (25.4 mm)MIN.
SUSPENSION
Fig. 1 --- Connecting Tubing Installation
When outdoor unit is connected to factory- -approved indoor unit,
outdoor unit contains system refrigerant charge for operation with
ARI rated indoor unit when connected by 15 ft/4.57 m. of
field- -supplied or factory accessory tubing. For proper unit
operation, check refrigerant charge using charging information
located on control box cover and/or in the Check Charge section
of this instruction.
INDOOR WALL
LIQUID TUBE
VAPOR TUBE
JOIST
INSULATION
VAPOR TUBE
LIQUID TUBE
A94028

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Summary of Contents for Bryant 264A

  • Page 1: Installation Instructions

    264A / 265A PREFERRED™ SERIES HEAT PUMP WITH PURON® REFRIGERANT SIZES 018 TO 060 1- - 1/2 TO 5 NOMINAL TONS Installation Instructions SAFETY CONSIDERATIONS INSTALLATION RECOMMENDATIONS Improper installation, adjustment, alteration, service, NOTE: In some cases noise in the living area has been traced maintenance, or use can cause explosion, fire, electrical shock, or to gas pulsations from improper installation of equipment.
  • Page 2: Installation

    INSTALLATION Operating Ambient The minimum outdoor operating ambient in cooling mode is Check Equipment and Job Site 55°F/12.78_C without low ambient cooling enabled, and the Unpack Unit maximum outdoor operating ambient in cooling mode is 125°F/51.67_C. The maximum outdoor operating ambient in Move to final location.
  • Page 3 Outdoor units may be connected to indoor section using Pumps will reduce these losses. Refer to Table 1 for accessory accessory tubing package or field- -supplied refrigerant grade requirements. Refer to Table 2 for field tubing diameters. tubing of correct size and condition. For tubing requirements If refrigerant tubes or indoor coil are exposed to atmosphere, they beyond 80 ft/24.38 m, substantial capacity and performance must be evacuated to 500 microns to eliminate contamination and...
  • Page 4: Indoor Unit

    Outdoor Unit Connected to Factory Approved Indoor Unit These outdoor units are carefully evaluated and listed with specific indoor coils for proper system performance. Install Adapter Tube 1. Remove plastic retainer holding outdoor piston in liquid service valve. 2. Check outdoor piston size with matching number listed on unit rating plate.
  • Page 5 Final Tubing Check Connect Control Wiring IMPORTANT: Check to be certain factory tubing on both indoor Route 24v control wires through control wiring grommet and connect leads to control wiring. See Thermostat Installation and outdoor unit has not shifted during shipment. Ensure tubes Instructions for wiring specific unit combinations.
  • Page 6 Follow these steps to properly start up system: The Outdoor Coil Temperature (OCT) Thermistor is factory installed on the 3/8” diameter stub tube located on the coil 1. After system is evacuated, fully open liquid and vapor ser- assembly. Check to make sure that it is securely attached with the vice valves.
  • Page 7: Sequence Of Operation

    Check Charge Heating Factory charge amount and desired subcooling are shown on unit On a call for heating a standard thermostat (non- -communicating) rating plate. Charging method is shown on information plate makes circuits R- -Y and R- -G. Circuit R- -Y energizes contactor, inside unit.
  • Page 8 Outdoor Coil Temp (OCT) Outdoor Air Temp (OAT) COMM STATUS A05332 Fig. 11 --- Control Board Time Delays With Non- -Communicating Thermostats When the utility curtailment interface is used with a The unit time delays include: non- -communicating thermostat, the utility relay should be wired Five minute time delay to start cooling or heating oper- between R and Y.
  • Page 9: Quiet Shift

    QUIET SHIFT Standard Thermostat low ambient cooling mode: A Low Ambient Pressure Switch kit, Evaporator Freeze This feature must be enabled by selecting the 3rd position of the Thermostat and Isolation Relay must be installed for low ambient 3- -position dip switch for a non- -communicating system or operation in standard thermostat mode.
  • Page 10: Troubleshooting

    TROUBLESHOOTING If the thermal cutout trips for three consecutive cycles, then unit operation is locked out for 4 hours and the appropriate fault code Systems Communication Failure (See Table 3) is displayed. If communication between User Interface (UI), and condensing Contactor Shorted Detection unit is lost, the outdoor control will flash the appropriate fault If there is compressor voltage sensed when there is no demand for...
  • Page 11 Status Codes is 1.0 second ON. Time between flashes is 0.25 second. Time between short flash and first long flash is 1.0 second. Time Table 3 shows the status codes flashed by the amber status light. between code repeating is 2.5 seconds with LED OFF. Most system problems can be diagnosed by reading the status Count the number of short and long flashes to determine the code as flashed by the amber status light on the control board.
  • Page 12: Final Checks

    S All indoor coils must be installed with a hard shutoff Puron TXV metering device. Catalog No. II264A ---18---3 E2008 Bryant Heating & Cooling Systems D 7310 W. Morris St. D Indianapolis, IN 46231 Printed in U.S.A. Edition Date: 02/08 Replaces: II263A--- 18--- 2 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

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265a285b

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