Carrier Infinity 24ANB7 Installation Instructions Manual

Carrier Infinity 24ANB7 Installation Instructions Manual

Infinity 2-stage air conditioner with puronr refrigerant 2-5 tons (sizes 24-60)
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24ANB7
24ANB1
Infinityr 2---Stage Air Conditioner with
Puronr Refrigerant
2---5 Tons (Sizes 24---60)

SAFETY CONSIDERATIONS

Improper installation, adjustment, alteration, service, 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
current editions of the National Electrical Code ( NEC ) NFPA 70.
In Canada, refer to current editions of the Canadian electrical code
CSA 22.1.
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 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.
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 and
install a lockout tag. There may be more than 1 disconnect
switch. Lock out and tag switch with a suitable warning label.
WARNING
!
EXPLOSION HAZARD
Failure to follow this warning could
result in death, serious personal injury,
and/or property damage.
Never use air or gases containing
oxygen for leak testing or operating
refrigerant compressors.
mixtures of air or gases containing
oxygen can lead to an explosion.

Installation Instructions

Pressurized
Indoor Thermostat Control Options
Model
24ANB7/24ANB1

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 appropriate
for unit capacity.
3. Run refrigerant tubes as directly as possible by avoiding un-
necessary turns and bends.
4. Leave some slack between structure and unit to absorb vi-
! !
bration.
5. When passing refrigerant tubes through the wall, seal open-
ing 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 sur-
rounds 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
HANGER STRAP
(AROUND VAPORTUBE ONLY)
1" (25.4 mm) MIN.
Fig. 1 - - Piping Installation
Standard
InfinityR
2---stage
Control
Thermostat
Yes
INDOOR WALL
CAULK
LIQUID TUBE
VAPOR TUBE
INSULATION
THROUGH THE WALL
JOIST
INSULATION
VAPOR TUBE
LIQUID TUBE
SUSPENSION
Yes
A94026

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Summary of Contents for Carrier Infinity 24ANB7

  • Page 1: Installation Instructions

    24ANB7 24ANB1 Infinityr 2---Stage Air Conditioner with Puronr Refrigerant 2---5 Tons (Sizes 24---60) Installation Instructions SAFETY CONSIDERATIONS Indoor Thermostat Control Options Standard Improper installation, adjustment, alteration, service, maintenance, InfinityR Model 2---stage Control or use can cause explosion, fire, electrical shock, or other Thermostat conditions which may cause death, personal injury, or property damage.
  • Page 2: Installation

    Install on a Solid, Level Mounting Pad The outdoor unit contains system refrigerant charge for operation with AHRI rated indoor unit when connected by 15 ft. (4.57 m) of If conditions or local codes require the unit be attached to pad, tie field- -supplied or factory accessory tubing.
  • Page 3: Make Piping Connections

    Table 1 – Accessory Usage Required for Low Ambient Required for Required for Sea Cooling Applications Low Ambient Required for Long Line Coast Accessory Utilizing 2--- Stage Cooling Applications Applications* Applications Thermostat on 17 SEER Utilizing UI (within 2 miles/3.2 km) Models Only (Below 55°...
  • Page 4 Sweat Connection Deep Vacuum Method The deep vacuum method requires a vacuum pump capable of CAUTION pulling a vacuum of 500 microns and a vacuum gage capable of accurately measuring this vacuum depth. The deep vacuum method UNIT DAMAGE HAZARD is the most positive way of assuring a system is free of air and liquid water.
  • Page 5: Connect Control Wiring

    Connect Ground and Power Wires Airflow Selections (ECM Furnaces - - non commu- nicating) Connect ground wire to ground connection in control box for safety. Connect power wiring to contactor as shown in Fig. 6. The ECM Furnaces provide blower operation to match the capacities of the compressor during high and low stage cooling DISCONNECT PER N.
  • Page 6: System Functions And Sequence Of Operation

    Start- -Up Utility Interface with Infinity Control The utility curtailment relay should be wired between R and Y2 CAUTION connections on the control board for Infinity Communicating Systems only (see Fig. 7). This input allows a power utility device to interrupt compressor operation during peak load periods. When UNIT OPERATION AND SAFETY HAZARD the utility sends a signal to shut the system down, the User Failure to follow this caution may result in personal injury,...
  • Page 7: Time Delays

    Infinity Controlled Low Ambient Cooling Table 3 – Outdoor Fan Motor PWM Outdoor Temp (DC volts, Tolerance +/- - 2%) This unit is capable of low ambient cooling down to 0_F Low & High (- -17.78_C) without a kit - - ONLY when using Infinity control. A Low Stage High Stage Model...
  • Page 8: Check Charge

    Check Charge Final Checks Models 24ANB7 / 24ANB1 should be charged in high stage IMPORTANT: Before leaving job, be sure to do the following: compressor operation. Factory charge amount and desired 1. Ensure that all wiring is routed away from tubing and sheet subcooling are shown on unit rating plate.
  • Page 9: Troubleshooting

    TROUBLESHOOTING Pressure Switch Protection The outdoor unit is equipped with high and low pressure switches. If the compressor fails to operate with a cooling call, Table 4 can be If the control senses the opening of a high or low pressure switch, used to verify if there is any damage to the compressor windings it will respond as follows: causing system malfunction.
  • Page 10: Major Components

    Compressor Voltage Sensing Unloader Test Procedure The control board input terminals labeled VS and L2 (see Fig. 7) The unloader is the compressor internal mechanism, controlled by are used to detect compressor voltage status, and alert the user of the DC solenoid, that modulates between high and low stage. If it potential problems.
  • Page 11: Temperature Thermistors

    TEMPERATURE THERMISTORS Failed Thermistor Default Operation Thermistors are electronic devices which sense temperature. As the temperature increases, the resistance decreases. Thermistors are Factory defaults have been provided in the event of failure of used to sense outdoor ambient (OAT) and coil temperature (OCT). outdoor air thermistor and/or coil thermistor.
  • Page 12 Table 6 – Troubleshooting AMBER LED OPERATION FAULT FLASH POSSIBLE CAUSE AND ACTION CODE On solid, no Standby – no call for unit operation None Normal operation flash Low Stage Cool/Heat Operation None 1, pause Normal operation High Stage Cool/Heat Operation None 2, pause Normal operation...
  • Page 13 Two-Stage Variable Speed Variable Speed 2-Stage Thermidistat Fan Coil Air Conditioner Furnace Air Conditioner Thermidistat Heat Stage 2 O/B W2 RVS/Heat Stage 2 O/W2/B Heat Stage 1 W/W1 Heat Stage 1 W/W1 REMOVE J2 JUMPER FOR Cool Stage 1 Y1 / W2 Compressor Low HEAT STAGING Cool Stage 2...
  • Page 14: Puronr Refrigerant Quick Reference

    S All indoor coils must be installed with a hard shutoff Puron TXV metering device. Always Ask For Catalog No: 24ANB7---1---4SI Copyright 2013 Carrier Corp. D 7310 W. Morris St. D Indianapolis, IN 46231 Edition Date: 03/13 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

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