Carrier INFINITY 24ANA User Manual

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24ANA

Infinityt Series Air Conditioners with Puronr Refrigerant

2 to 5 Nominal Tons (Sizes 24 to 60)

Installation Instructions

NOTE: Read the entire instruction manual before starting the installation.

Unless otherwise noted, information in these installation instructions pertain to both 24ANA1 and 24ANA7 series units. Information that is unique to the 24ANA1 series will be identified as such; likewise information that is unique to the 24ANA7 series will also be identified.

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 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.

Indoor Thermostat Control Options

Model

Infinity

Standard 2---stage

Control

Thermostat

 

 

 

 

24ANA7

Yes

Yes

 

 

 

24ANA1

Yes

Yes*

 

 

 

* Units containing circuit board HK38EA015 or newer.

!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.

!WARNING

UNIT OPERATION AND SAFETY HAZARD

Failure to follow this warning could result in personal injury, death and/or equipment damage.

Puron refrigerant systems operate at higher pressures than standard R-22 systems. Do not use R-22 service equipment or components on Puron equipment.

!CAUTION

CUT HAZARD

Failure to follow this caution may result in personal injury.

Sheet metal parts may have sharp edges or burrs. Use care and wear appropriate protective clothing and gloves when handling parts.

Carrier INFINITY 24ANA User Manual

24ANA

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 unnecessary turns and bends.

4.Leave some slack between structure and unit to absorb vibration.

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. 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.

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.

IMPORTANT: Maximum liquid-line size is 3/8-in. OD for all residential applications including long line applications.

IMPORTANT: Always install the factory-supplied liquid-line filter drier. If replacing the filter drier, refer to Product Data Digest for appropriate part number. Obtain replacement filter driers from your distributor or branch.

INSTALLATION

NOTE:Avoid contact between tubing and structure

OUTDOOR WALL INDOOR WALL

CAULK

LIQUID TUBE

 

INSULATION

VAPOR TUBE

 

THROUGH THE WALL

 

 

JOIST

HANGER STRAP

 

(AROUND VAPOR

INSULATION

TUBE ONLY)

 

VAPOR TUBE

1” (25.4 mm) MIN.

LIQUID TUBE

SUSPENSION

 

A94026

Fig. 1 - Connecting Tube Installation

Specifications for this unit in residential new construction market require the outdoor unit, indoor unit, refrigerant tubing sets, metering device, and filter drier listed in presale literature. There

can be no deviation. Consult the Application Guideline and Service Manual – Air Conditioners and Heat Pumps Using Puron Refrigerant to obtain required unit changes for specific applications and for R-22 retrofit.

Check Equipment and Job Site

Unpack Unit

Move to final location. Remove carton taking care not to damage unit.

Inspect Equipment

File claim with shipping company prior to installation if shipment is damaged or incomplete. Locate unit rating plate on unit corner panel. It contains information needed to properly install unit. Check rating plate to be sure unit matches job specifications.

Install on a Solid, Level Mounting Pad

If conditions or local codes require the unit be attached to pad, tie down bolts should be used and fastened through knockouts provided in unit base pan. Refer to unit mounting pattern in Fig. 2 to determine base pan size and knockout hole location.

For hurricane tie downs, contact distributor for details and PE Certified (Professional Engineer), if required.

On rooftop applications, mount on level platform or frame. Place unit above a load-bearing wall and isolate unit and tubing set Consult local codes governing rooftop applications.

Roof mounted units exposed to winds above 5 mph may require wind baffles. Consult the Application Guideline and Service Manual - Residential Split System Air Conditioners and Heat Pumps Using Puron Refrigerant for wind baffle construction.

UNIT BASE PAN

TIEDOWN KNOCKOUT LOCATIONS

DIMENSIONS

 

in. (mm)

 

in. (mm)

 

 

 

 

A

B

 

C

36---1/2 x 40

11---5/8

6---13/16

 

28---3/4

(927.1x1016)

(295.3)

(173.0)

 

(730.3)

 

 

 

 

 

 

 

 

 

A05177

Fig. 2 - Clearance Requirements

 

NOTE: Unit must be level to within ±2_, ±3/8

in./ft. (9.53

mm/m) per compressor manufacturer specifications.

 

Clearance Requirements

When installing, allow sufficient space for airflow clearance, wiring, refrigerant piping, and service. Allow 24 in. (610 mm) clearance to service end of unit and 48 in. (1219.2 mm) above unit. For proper airflow, a 6 in. (152.4 mm) clearance on 1 side of unit and 12 in. (304.8 mm) on all remaining sides must be maintained. Maintain a distance of 24 in. (609.6 mm) between units. Position so water, snow, or ice from roof or eaves cannot fall directly on unit.

2

On rooftop applications, locate unit at least 6 in. (152.4 mm) above roof surface.

Operating Ambient

The minimum outdoor operating ambient in cooling mode is 55_F/12.78_C without low ambient cooling enabled, and the maximum outdoor operating ambient in cooling mode is 125_F/51.67_C. On Infinity communicating systems only, for both 24ANA1 and 24ANA7 models, low ambient cooling is available to 0_F/-17.78_C.

Make Piping Connections

!WARNING

PERSONAL INJURY AND ENVIRONMENTAL HAZARD

Failure to follow this warning could result in personal injury or death.

Relieve pressure and recover all refrigerant before system repair or final unit disposal Use all service ports and open all flow-control devices, including solenoid valves.

!CAUTION

UNIT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage or improper operation.

Do not leave system open to atmosphere any longer than minimum required for installation. POE oil in compressor is extremely susceptible to moisture absorption. Always keep ends of tubing sealed during installation.

!CAUTION

UNIT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage or improper operation.

If ANY refrigerant tubing is buried, provide a 6 in. (152.4 mm) vertical rise at service valve. Refrigerant tubing lengths up to 36 in. (914.4 mm) may be buried without further special consideration. Do not bury lines longer than 36 in. (914.4 mm).

Outdoor units may be connected to indoor section using field-supplied refrigerant grade tubing of correct size and condition. For tubing requirements beyond 80 ft (24.38 m), substantial capacity and performance losses can occur. Following the recommendations in the Residential Piping and Longline Guideline will reduce these losses. Refer to Table 1 for field tubing diameters. Refer to Table 2 for accessory requirements.

There are no buried-line applications greater than 36 in. (914.4 mm).

If refrigerant tubes or indoor coil are exposed to atmosphere, they must be evacuated to 500 microns to eliminate contamination and moisture in the system.

Outdoor Unit Connected to Factory Approved Indoor Unit:

Outdoor unit contains correct system refrigerant charge for operation with factory approved ARI rated indoor unit with highest sales volume when connected by 15 ft (4.57 m) of field-supplied or factory-accessory tubing, and factory supplied filter drier. Check refrigerant charge for maximum efficiency.

Table 1 – Refrigerant Connections and Recommended Liquid and Vapor Tube Diameters (in.)

UNIT SIZE

 

LIQUID

RATED VAPOR*

Connection

 

Tube

Connection

Tube

 

Diameter

 

Diameter

Diameter

Diameter

24ANA724

3/8

 

3/8

5/8

5/8

24ANA736

3/8

 

3/8

3/4

3/4

24ANA748

3/8

 

3/8

7/8

7/8

 

 

 

 

 

 

24ANA760

3/8

 

3/8

7/8

1---1/8

 

 

 

 

 

 

24ANA124

 

 

 

 

 

24ANA136

3/8

3/8

7/8

7/8

24ANA148

 

 

 

 

 

24ANA160

3/8

3/8

7/8

1---1/8

* Units are rated with 25 ft. (7.6 m) of lineset. See Product Data sheet for performance data when using different size and length linesets.

Notes:

1.Do not apply capillary tube or fixed orifice indoor coils to these units.

2.For Tubing Set lengths between 80 and 200 ft. (24.38 and 60.96 m) horizontal or 20 ft. (6.10 m) vertical differential (250 ft./76.2 m Total Equivalent Length), refer to the Residential Piping and Longline Guideline.

24ANA

ISO 9001:2000

the environmentally sound refrigerant

REGISTERED

This product has been designed and manufactured to meet Energy Star® criteria for energy efficiency when matched with appropriate coil components. However, proper refrigerant charge and proper air flow are critical to achieve rated capacity and efficiency. Installation of this product should follow all manufacturing refrigerant

charging and air flow instructions. Failure to confirm proper charge and air flow may reduce energy efficiency and shorten equipment life.

3

24ANA

Table 2 – Accessory Usage

 

REQUIRED FOR

 

REQUIRED FOR SEA COAST

 

LOW---AMBIENT COOLING

REQUIRED FOR LONG LINE

Accessory

APPLICATIONS

APPLICATIONS

APPLICATIONS*

 

(Within 2 miles/3.22 km)

 

(Below 55°F/12.8_C)

 

 

 

 

Accumulator

No

No

No

Compressor Start Assist Capacitor and

Standard on 24ANA7 models.

Standard on 24ANA7 models.

Standard on 24ANA7 models.

Not required for 24ANA1

Relay}

Not required for 24ANA1 models.

Not required for 24ANA1 models.

models.

 

 

 

Crankcase Heater

Standard

Standard

Standard

 

Standard with Infinity Control

 

 

Evaporator Freeze Protection

(Low Ambient not allowed with non---

No

No

 

communicating Thermostat)

 

 

Liquid Line Solenoid Valve

No

No

No

 

Standard with Infinity Control (Low Am-

 

 

Low---ambient Control

bient not allowed with non---communi-

No

No

 

cating thermostat)

 

 

Puron Balance Port Hard Shut---off TXV

Yes{

Yes{

Yes{

 

Standard with Infinity Control (Low Am-

 

 

Winter Start Control

bient not allowed with Non---Communi-

No

No

 

cating Thermostat)

 

 

Support Feet

Recommended

No

Recommended

*For Tubing Set lengths between 80 and 200 ft. (24.38 and 60.96 m) horizontal or 20 ft. (6.10 m) vertical differential (250 ft./76.2 m Total Equivalent Length), refer to the Residential Piping and Long Line Guideline for Air Conditioners and Heat Pumps using Puron® Refrigerant.

{ Required on all indoor units. Standard on all new Puron fan coils and furnace coils.

}Information is specific to 24ANA7 and 24ANA1 models.

Install Liquid-Line Filter Drier Indoor

!CAUTION

UNIT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage or improper operation.

Installation of filter drier in liquid line is required.

Refer to Fig. 3 and install filter drier as follows:

1.Braze 5 in. (127 mm) liquid tube to the indoor coil.

2.Wrap filter drier with damp cloth.

3.Braze filter drier to above 5 in. (127 mm) liquid tube. Flow arrow must point towards indoor coil.

4.Connect and braze liquid refrigerant tube to the filter drier.

A05178

Fig. 3 - Liquid Line Filter Drier

Refrigerant Tubing Connection Outdoor

Connect vapor tube to fitting on outdoor unit vapor service valves (see Table 1.) Connect and braze the 3/8 in. coupling (provided with the filter drier) to the liquid service valve and connect and braze the liquid tubing to the other end of this coupling. Use refrigerant grade tubing.

Sweat Connection

!CAUTION

UNIT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage or improper operation.

S Use a brazing shield

S Wrap service valves with wet cloth or heat sink material.

Use refrigerant grade tubing. Service valves are closed from factory and ready for brazing. After wrapping service valve with a wet cloth, braze sweat connections using industry accepted methods and materials. Consult local code requirements. Refrigerant tubing and indoor coil are now ready for leak testing. This check should include all field and factory joints.

Evacuate Refrigerant Tubing and Indoor Coil

!CAUTION

UNIT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage or improper operation.

Never use the system compressor as a vacuum pump.

4

Refrigerant tubes and indoor coil should be evacuated using the recommended deep vacuum method of 500 microns. The alternate triple evacuation method may be used. See Service Manual for triple evacuation method. Always break a vacuum with dry nitrogen._

Deep Vacuum Method

The deep vacuum method requires a vacuum pump capable of pulling a vacuum of 500 microns and a vacuum gage capable of accurately measuring this vacuum depth. The deep vacuum method is the most positive way of assuring a system is free of air and liquid water. (See Fig. 4)

5000

 

 

 

 

 

 

 

4500

 

 

 

 

 

 

 

4000

 

 

 

 

 

LEAK IN

3500

 

 

 

 

 

 

 

 

 

 

SYSTEM

3000

 

 

 

 

 

 

 

 

 

 

 

 

2500

 

 

 

 

 

 

 

MICRONS2000

 

 

 

 

 

VACUUM TIGHT

1500

 

 

 

 

 

 

 

 

 

 

TOO WET

1000

 

 

 

 

 

 

 

 

 

 

TIGHT

500

 

 

 

 

 

 

 

 

 

 

DRY SYSTEM

 

 

 

 

 

 

0

1

2

3

4

5

6

7

 

 

 

MINUTES

 

 

 

 

 

 

 

 

 

 

A95424

Fig. 4 - Deep Vacuum Graph

Final Tubing Check

IMPORTANT: Check to be certain factory tubing on both indoor and outdoor unit has not shifted during shipment. Ensure tubes are not rubbing against each other or any sheet metal. Pay close attention to feeder tubes, making sure wire ties on feeder tubes are secure and tight.

Make Electrical Connections

!WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury or death.

Do not supply power to unit with compressor terminal box cover removed.

Be sure field wiring complies with local and national fire, safety, and electrical codes, and voltage to system is within limits shown on unit rating plate. Contact local power company for correction of improper voltage. See unit rating plate for recommended circuit protection device.

NOTE: Operation of unit on improper line voltage constitutes abuse and could affect unit reliability. See unit rating plate. Do not install unit in system where voltage may fluctuate above or below permissible limits.

NOTE: Use copper wire only between disconnect switch and unit.

NOTE: Install branch circuit disconnect of adequate size per NEC to handle unit starting current. Locate disconnect within sight from and readily accessible from unit, per Section 440-14 of NEC.

Route Ground and Power Wires

Remove access panel to gain access to unit wiring. Extend wires from disconnect through power wiring hole provided and into unit control box.

!WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury or death.

The unit cabinet must have an uninterrupted or unbroken ground to minimize personal injury if an electrical fault should occur. The ground may consist of electrical wire or metal conduit when installed in accordance with existing electrical codes.

Connect Ground and Power Wires

Connect ground wire to ground connection in control box for safety. Connect power wiring to contactor as shown in Fig. 5.

DISCONNECT

 

PER N. E. C. AND/OR

 

LOCAL CODES

CONTACTOR

 

FIELD POWER

24ANA

 

WIRING

 

FIELD GROUND

 

WIRING

GROUND LUG

 

 

A91056

Fig. 5 - Line Power Connections

Connect Control Wiring

Route low-voltage control wires through control wiring grommet and connect leads to control board.

For Infinity, connect to ABCD only. For standard non-communicating thermostats, connect to standard thermostat connections R, C, Y1 and Y2.

Use No. 18 AWG color-coded, insulated (35_C minimum) wire for all installations.

All wiring must be NEC Class 1 and must be separated from incoming power leads.

Use furnace transformer or fan coil transformer for control power, 24-v/40-va minimum. The outdoor unit requires a minimum of 27va/24 vac control power.

Final Wiring Checks

IMPORTANT: Check factory wiring and field wire connections to ensure terminations are secured properly. Check wire routing to ensure wires are not in contact with tubing, sheet metal, etc.

Compressor Crankcase Heater

Furnish power to crankcase heater a minimum of 24 hr before starting unit. To furnish power to heater only, set thermostat to OFF and close electrical disconnect to outdoor unit.

NOTE: On 24ANA7 models, starting the compressor without a minimum of 12 hours of crankcase heat prior to initial start-up may result in a compressor chattering noise and possible damage to the compressor.

Install Accessories

Refer to the individual instructions packaged with kits or accessories when installing.

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