Nordyne 4BF-024KA, 4BF-036KA, 4BF-048KB, 4BF-060KB Installation And User Manual

AIR CONDITIONER

User’s Manual / Installation Instructions

Two Stage R-410A Split System

16 SEER

Premium Model Shown

IMPORTANT

Please read this information thoroughly and become familiar with the capabilities and use of your appliance before attempting to operate or maintain this unit. Keep this literature where you have easy access to it in the future. If a problem occurs, check the instructions and follow recommendations given. If these suggestions don’t eliminate your problem, call your servicing contractor .

These instructions are primarily intended to assist qualiﬁ ed individuals experienced in the proper installation of this appliance. Some local codes require licensed installation/service personnel for this type of equipment. Please read all instructions carefully before starting the installation.

DO NOT DESTROY. PLEASE READ CAREFULLY AND KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.

USER INFORMATION

Safety Information ........................................ 4

About the Air Conditioner ............................4

What are the Beneﬁ ts of a Split

System?......................................................4

What are the Beneﬁ ts of Two - Stage

Variable Speed Cooling? ............................4

Operating Instructions ................................. 4

Cooling Operation .......................................4

Heating Operation ...................................... 4

INSTALLER INFORMATION

Safety Information ........................................ 6

Pressures Within the System .....................6

Labels, Tags, and Precautions ....................6

Brazing Operations .....................................6

General Information .....................................7

Outdoor Unit Selection ............................... 7

Liquid and Suction Lines ............................ 7

Field Connections for Electrical Power

Supply.........................................................7

Site Preparation ............................................ 7

Unpacking the Equipment .......................... 7

Inspect for Damage ....................................7

Preferred Location of the Outdoor Unit ....... 7

Facility Prerequisites ..................................7

Minimum Circuit Ampacity .......................... 7

Maximum Fuse / Circuit Breaker Size ........7

Installing the Indoor Unit .............................7

Installing the Outdoor Unit ..........................7

Slab Mount ................................................ 7

Cantilever Mount ........................................7

Roof Mount ................................................ 8

Connecting Refrigerant Tubing Between

the Indoor and Outdoor Unit .......................8

General Information ....................................8

Filter Drier Installation ................................8

Optional Equipment .................................... 8

Oper. the Indoor Blower Continuously ........ 5

Shutting the AC Off ..................................... 5

Warranty Information ...................................5

System Maintenance .................................... 5

Regular Cleaning ........................................5

Before You Call a Technician ...................... 5

Troubleshooting ............................................ 5

High Pressure Switch .................................9

Comfort Alert

Diagnostic Module...........10

24VAC Power Wiring ............................10

Thermostat Demand Wiring .................10

Interpreting the Diagnostic LED’s .........10

LED Description ...................................10

Two - Speed Outdoor Fan Motor ..............11

Optional Equipment ..................................11

Grounding .................................................11

Startup & Adjustments...............................11

Pre - Start Checklist .................................11

Thermostat ...............................................11

Outdoor Unit .............................................11

Functional Checkout ..................................11

Cooling .....................................................11

Heating .....................................................11

Indoor Blower ...........................................11

Short Cycle Protection ..............................12

Optional Equipment ..................................12

Adjustment of Refrigerant Charge ............12

Charging R-410A Unit in AC Mode ..........13

Cooling Charging Charts ...........................13

Troubleshooting Tables ..............................16

Electrical Connections ................................. 8

Pre - Electrical Checklist.............................8

Wiring Diagram / Schematic ....................... 8

Line Voltage ................................................ 8

Outdoor Unit Connections ..........................9

Control Circuit Wiring ..................................9

Thermostat Connections ............................9

Low Pressure Switch .................................. 9

USER INFORMATION

SAFETY INFORMATION

IMPORTANT: Safety markings are used

frequently throughout this manual to designate a degree or level of seriousness and should not be ignored. WARNING indicates a potentially hazardous situation that if not avoided, could result in personal injury or death. CAUTION indicates a potentially hazardous situation that if not avoided, may result in minor or moderate injury or property damage.

ABOUT THE AIR CONDITIONER

Your 16 SEER air conditioner has been carefully designed and engineered to give you outstanding energy efﬁ ciency and years of trouble-free operation. This appliance uses only proven components, such as the Ultra-tech Copeland® scroll compressor, a leaders choice for efﬁ ciency, durability, and longevity.

What are the beneﬁ ts of a split system?

Split systems are designed to work efﬁ ciently for cooling in any climate. Split systems have two main components: the outdoor section (air conditioner or heat pump) and the indoor section (matched air handler or coil). These two sections work together to provide top performance, maximum efﬁ ciency, and comfort.

What are the beneﬁ ts of two stage; variable speed cooling?

• Two stage cooling products maintain a more consistent comfort level throughout your home. The AC always starts in ﬁ rst stage and attempts to meet the cooling demand. When the temperature rises, the air conditioner or heat pump automatically adjusts itself and enters the second stage to meet increased cooling demands.

• A two stage, variable-speed unit runs for longer cycles and will remove up to six times more moisture than a conventional unit. The result is a more comfortable environment even at a higher thermostat setting.

• Since the fan operates slower during the low stage cooling demand, the fan motor produces less fan noise. The variable speed motor ramps up slowly, eliminating uncomfortable temperature swings. Since the unit runs at the stage needed based off demand, you never pay for energy that is not needed.

OPERATING INSTRUCTIONS

Please refer to the thermostat manufacturer’s User Manual for detailed programming instructions.

For this type of equipment to function as intended, a two stage cooling / heating thermostat is required.

Cooling Operation

1. Set the thermostat’s system mode to COOL or AUTO and change the fan mode to AUTO. See Figure 1

2. Set the temperature selector to the desired temperature level. The outdoor fan, compressor, and blower motor will all cycle on and off to maintain the indoor temperature at the desired cooling level.

NOTE: If the temperature level is re-adjusted, or the system mode is reset, the fan and compressor in the outdoor unit may not start immediately. A protective timer circuit holds the compressor and the outdoor fan off for approximately three minutes following a previous operation or the interruption of the main electrical power.

Heating Operation

1. Set the thermostat’s system mode to HEAT or AUTO and change the fan mode to AUTO. See Figure 1.

2. Set the temperature selector to the desired temperature level. The compressor, outdoor fan, and blower motor will cycle on and off to maintain the indoor temperature at the desired heating level.

Fan

Mode

Figure 1. Digital Thermostat

System

Mode

Temperature

Selector

USER INFORMATION

Operating the Indoor Blower Continuously

The continuous indoor blower operation is typically used to circulate the indoor air to equalize a temperature unbalance due to a sun load, cooking, or ﬁ replace operation.

Set the thermostat fan mode to ON (Figure 1). The indoor blower starts immediately, and will run continually until the fan mode is reset to AUTO.

The continuous indoor blower operation can be obtained with the thermostat system mode set in any position, including OFF.

Shutting the Air Conditioner Off

Change the thermostat’s system mode to OFF and the fan mode to AUTO (See Figure 1). NOTE: The system will not operate, regardless of the temperature selector setting.

WARRANTY INFORMATION

A warranty certificate with full details is included with the air conditioner. Carefully review these responsibilities with your dealer or service company. The manufacturer will not be responsible for any costs found necessary to correct problems due to improper setup, improper installation, adjustments, improper operating procedure on the part of the user, etc. Some speciﬁ c examples of service calls which are not included in the limited warranty are:

1. Correcting wiring problems in the electrical circuit supplying the air conditioner.

2. Resetting circuit breakers or other switches.

3. Adjusting or calibrating of thermostat.

SYSTEM MAINTENANCE

CAUTION:

Shut off all electrical power to the unit before performing any maintenance or service on the system. Failure to comply may result in personal injury or death.

Proper maintenance is most important to achieve the best performance from the appliance and should be performed by a qualiﬁ ed service technician at least once a year. Follow the maintenance schedule and the instructions below for years of safe, trouble free operation.

Regular Cleaning

• Clean or replace the indoor air ﬁ lter at the start of each heating and cooling season, and when an accumulation of dust and dirt is visible on the air ﬁ lter.

• Remove any leaves and grass clippings from the coil in the outdoor unit, being careful not to damage the aluminum ﬁ ns.

• Check for obstructions, such as twigs, sticks, etc.

TROUBLESHOOTING

If the AC fails to operate, check the following:

• The thermostat is properly set. See Cooling Operation for air conditioning or Heating Operation for furnace or air handler (page 3).

• The unit disconnect fuses are in good condition and the electrical power to the unit is turned on.

INSTALLER INFORMATION

SAFETY INFORMATION

IMPORTANT: Safety markings are used

WARNING:

Improper installation, service, adjustment, or maintenance may cause explosion, ﬁ re, electrical shock or other hazardous conditions which may result in personal injury or property damage. Unless otherwise noted in these instructions, only factory authorized kits or accessories may be used with this product.

WARNING:

These units are fully charged with R-410A refrigerant and ready for installation. When a system is installed according to these instructions, no refrigerant charging is required. If repairs make it necessary for evacuation and charging, it should only be attempted by qualiﬁ ed, trained personnel thoroughly familiar with this equipment. Some local codes require licensed installation service personnel to service this type of equipment. Under no circumstances should the homeowner attempt to install and/ or service this equipment. Failure to comply with this warning could result in equipment damage, personal injury, or death.

WARNING:

The safety information listed below must be followed during the installation, service, and operation of this unit. Unqualified individuals should not attempt to interpret these instructions or install this equipment. Failure to follow safety recommendations could result in possible damage to the equipment, serious per

• The installer must comply with all local codes and regulations which govern the installation of this type of equipment. Local codes and regulations take precedence over any recommendations contained in these instructions. Consult local building codes and the National Electrical Code (ANSI CI) for special installation requirements.

• This equipment contains liquid and gaseous refrigerant under high pressure. Installation or servicing should only be performed by qualiﬁ ed trained personnel thoroughly familiar with this type equipment.

• All electrical wiring must be completed in accordance with local, state and national codes and regulations and with the National Electric Code (ANSI/NFPA 70) or in Canada the Canadian Electric Code Part 1 CSA C.22.1.

• Installation of equipment may require brazing operations. Installer must comply with safety codes and wear appropriate safety equipment (safety glasses, work gloves, ﬁ re extinguisher, etc.) when performing brazing operations.

• Install this unit only in a location and position as speciﬁ ed on page 6. This unit is designed only for outdoor installations and should be located with consideration of minimizing the length of the supply and return ducts. Consideration should also be given to the accessibility of fuel, electric power, service access, noise, and shade.

• Follow all precautions in the literature, on tags, and on labels provided with the equipment. Read and thoroughly understand the instructions provided with the equipment prior to performing the installation and operational checkout of the equipment..

sonal injury or death

+ 14 hidden pages

Nordyne 4BF-024KA, 4BF-036KA, 4BF-048KB, 4BF-060KB Installation And User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual