- Home
- Domestic appliances
- Climate control
- Split-system air conditioners
- Miller
- NS6QD-KA
- Installation guide
advertisement
NS6QD SERIES - WITH QUICK CONNECT COUPLINGS
USER’S MANUAL / INSTALLATION INSTRUCTIONS
OUTDOOR SPLIT SYSTEM AIR CONDITIONER FOR MANUFACTURED HOUSING
13 SEER
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.
The Installation 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.
2
USER INFORMATION
Important Safety Information ....................................3
Operating Instructions ...............................................3
Operating the Air Conditioner for Automatic
Cooling and Heating ..................................................3
Operating the Indoor Blower Continuously ................3
Turning the Air Conditioner Off ..................................3
Air Conditioner Maintenance .................................... 3
Troubleshooting ......................................................... 3
WARRANTY INFORMATION
A warranty certifi cate 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:
• Correcting wiring problems in the electrical circuit supplying the air conditioner.
• Resetting circuit breakers or other switches.
• Adjusting or calibrating of thermostat.
INSTALLER INFORMATION
Important Safety Information ....................................4
Air Conditioner Installation .......................................5
Before You Install this Unit .........................................5
Locating the Air conditioner .......................................5
Connecting Refrigerant Tubing Between the
Indoor & Outdoor Unit ...............................................6
Electrical Wiring ..........................................................6
Pre - Electrical Checklist ...........................................6
Grounding..................................................................7
Startup & Adjustments ..............................................8
Pre - Start Checklist ..................................................8
Air Conditioner Maintenance .....................................9
Component Functions ...............................................9
Replacement Parts .....................................................9
Figures & Tables ....................................................... 10
Figure 4. Unit Dimensions .................................... 10
Table 4. Electrical Specs & Physical Data ............ 11
Figure 5. Wiring Diagram - 2 - 2.5 Ton Units ........ 12
Figure 6. Wiring Diagram - 3 Ton Units ................ 13
Figure 7. Wiring Diagram - 3.5 - 5 Ton Units ........ 14
Cooling Charging Charts ......................................... 15
Figure 8. Charging Chart for 2 Ton Units .............. 16
Figure 9. Charging Chart for 2.5 Ton Units ........... 16
Figure 10. Charging Chart for 3 Ton Units ............ 17
Figure 11. Charging Chart for 3.5 Ton Units ......... 17
Figure 12. Charging Chart for 4 Ton Units ............ 18
Figure 13. Charging Chart for 5 Ton Units ............ 18
Air Circulation - Indoor Blower ...............................8
INSTALLATION / PERFORMANCE CHECKLIST ..... 20
Charging R-410A Units in AC Mode with
Outdoor Temperatures Above 55° F .......................8
USER INFORMATION
IMPORTANT SAFETY INFORMATION
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.
The continuous indoor blower operation can be obtained with the thermostat system mode set in any position, including OFF.
Turning 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.
OPERATING INSTRUCTIONS
NOTE: Thermostat styles vary. Some models may not include the AUTO mode and others will have the AUTO in place of the HEAT and COOL. Others may include all three. Please refer to the thermostat manufacturer’s User manual for detailed programming instructions.
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 5 minutes following a previous operation or the interruption of the main electrical power (if applicable).
Fan
Mode
System
Mode
Temperature
Selector
Figure 1. Digital Thermostat
AIR CONDITIONER MAINTENANCE
Proper maintenance is most important to achieve the best performance from the appliance and should be performed frequently at the beginning of each air conditioning season.
WARNING:
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 optional heating equipment
(furnace or electric heat) will cycle on & off to maintain the indoor temperature at the desired temperature level.
Operating the AC for Automatic Cooling & Heating
1. Set the thermostat system mode to AUTO and the thermostat fan mode to AUTO. See Figure 1.
2. Set the thermostat temperature selector to the desired temperature level. The thermostat will maintain the desired temperature level by switching between either the outdoor cooling unit or the indoor heating unit
(furnace or electric heat) automatically.
Your Air Conditioner contains liquid and gaseous refrigerant under pressure. Installation and servicing should only be attempted by qualifi ed, trained personnel thoroughly familiar with the equipment and safe responsible refrigerant handling procedures. Failure to comply with this warning could result in equipment damage, personal injury, or death.
• Keep the outdoor unit clean. Hose off periodically and keep unit fi ns clear of leaves and grass clippings.
• Keep the outdoor unit clear of obstructions.
DO NOT obstruct airfl ow with tall plants or shrubs.
DO NOT store gasoline or other fl ammable materials on or near the outdoor unit.
• Never operate the appliance without a fi lter installed in the return air duct. Inspect fi lters frequently and replace when necessary with fi lter of same dimensional size.
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.
TROUBLESHOOTING
• Check the thermostat setting. Make sure the system mode and temperature settings are correct.
• Check the electrical panel for tripped circuit breakers.
• Check the fi lters for dust accumulation.
• Check the outdoor unit and make sure it is clean and not covered with grass or leaves.
3
4
INSTALLER INFORMATION
IMPORTANT SAFETY INFORMATION
INSTALLER: Please read all instructions before servicing this equipment. Pay attention to all safety warnings and any other special notes highlighted in the manual. 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.
WARNING:
CAUTION:
This unit uses refrigerant R-410A. DO NOT use any other refrigerant in this unit. Use of another refrigerant will damage the unit.
WARNING:
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.
The information listed below must be followed during the installation, service, and operation of this unit. Unqualifi ed 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 sonal injury or death.
WARNING:
Unless noted otherwise in these instructions, only factory authorized parts or accessory kits may be used with this product. 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
WARNING:
NS6QD Split System Air conditioners leave the factory with an R-410A refrigerant holding charge. Follow all charging instructions for maximum unit performance and effi ciency. Some local codes require licensed installation/service personnel to service this type of equipment.
Refrigerant charging must be done by qualifi ed personnel familiar with safe and environmentally responsible refrigerant handling procedures.
Under no circumstances should the owner attempt to install and/or service this equipment.
Failure to comply with this warning could result in property damage, personal injury, or death.
• 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.
• 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.
• This equipment contains liquid and gaseous refrigerant under high pressure. DO NOT USE ANY PORTION OF
THE CHARGE FOR PURGING OR LEAK TESTING.
Installation or servicing should only be performed by qualifi ed trained personnel thoroughly familiar with this type equipment.
• Fully annealed, refrigerant grade copper tubing should be used when installing the system. Refrigerant suction line tubing should be fully insulated.
• 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.
• 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.
AIR CONDITIONER INSTALLATION
General Information
The NS6QD series air conditioner is designed only for outdoor rooftop or ground level installations. This unit has been tested for capacity and effi ciency in accordance with
A.H.R.I. Standards and will provide many years of safe and dependable comfort, providing it is properly installed and maintained. Abuse, improper use, and/or improper maintenance can shorten the life of the appliance and create unsafe hazards.
To achieve optimum performance and minimize equipment failure, it is recommended that periodic maintenance be performed on this unit. The ability to properly perform maintenance on this equipment requires certain mechanical skills and tools.
Before You Install this Unit
The cooling load of the area to be conditioned must be calculated and a system of the proper capacity selected.
It is recommended that the area to be conditioned be completely insulated and vapor sealed.
Check the electrical supply and verify the power supply is adequate for unit operation. The system must be wired and provided with circuit protection in accordance with local building codes. If there is any question concerning the power supply, contact the local power company.
The indoor section (air handler, furnace, etc) should be installed before routing the refrigerant tubing. Refer to the indoor unit's installation instructions for installation details.
All units are securely packed at the time of shipment and upon arrival should be carefully inspected for damage prior to installing the equipment at the job site. Verify coil fi ns are straight. If necessary, comb fi ns to remove fl attened or bent fi ns. Claims for damage (apparent or concealed) should be fi led immediately with the carrier.
Please consult your dealer for maintenance information and availability of maintenance contracts. Please read all instructions before installing the unit.
Locating the Air Conditioner
• Survey the job site to determine the best location for mounting the outdoor unit. See Figure 4 (page 10) for unit dimensions.
• Overhead obstructions, poorly ventilated areas, and areas subject to accumulation of debris should be avoided.
• Suffi cient clearance for unobstructed airfl ow through the outdoor coil must be maintained in order to achieve rated performance. For minimum clearances to obstructions, see Figure 2.
• Consideration should be given to availability of electric power, service access, noise, and shade.
Packaging Removal
NOTE: To prevent damage to the tubing connections, carefully remove the carton and user’s manual from the equipment. Discard the shipping carton.
Ground Level
Ground level installations must be located according to local building codes or ordinances and these requirements:
• Clearances must be in accordance with those shown in Figure 2.
• A suitable mounting pad (Figure 3) must be provided and separate from the building foundation. The pad must be level and strong enough to support the weight of the unit. The slab height must be a minimum of 2”
(5 cm) above grade and with adequate drainage.
18"
DO NOT
OBSTRUCT
TOP OF UNIT
2”
Figure 3. Ground Level Installation
18" 18"
18"
Figure 2. Clearance Requirements
5
6
Connecting Refrigerant Tubing Between the Indoor
& Outdoor Unit
CAUTION:
This system uses R-410A refrigerant with POE oil. When servicing, cover or seal openings to minimize the exposure of the refrigerant system to air to prevent accumulation of moisture and other contaminants.
• A fi lter dryer is provided with the unit and must be installed in the liquid line of the system. If the installation replaces a system with a fi lter dryer already present in the liquid line, the fi lter dryer must be replaced with the one supplied with the unit. The fi lter dryer must be installed in strict accordance with the manufacturer’s installation instructions.
• Optional equipment such as liquid line solenoid valves, low ambient, etc., should be installed in strict accordance with the manufacturer’s installation instructions.
After outdoor and indoor unit placement has been determined, route refrigerant tubing between the equipment in accordance with sound installation practices.
Coupling
Size
Torque
Male
Coupling
Female
Coupling
Nut
Female
Coupling
Body
• When connecting refrigerant linesets together, it is recommended that dry nitrogen be fl owing through the joints during brazing to prevent internal oxidation and scaling.
• Refrigerant tubing should be routed in a manner that minimizes the length of tubing and the number of bends in the tubing. If precise forming of refrigerant lines is required, a copper tubing bender is recommended.
Avoid sharp bends and contact of the refrigerant lines with metal surfaces.
• Refrigerant tubing should be supported in a manner that the tubing will not vibrate or abrade during system operation.
• Tubing should be kept clean of foreign debris during installation.
• Every effort should be made by the installer to ensure that the fi eld installed refrigerant containing components of the system have been installed in accordance with these instructions and sound installation practices to insure reliable system operation and longevity.
• The maximum recommended interconnecting refrigerant line lengths is 75 ft. and the vertical elevation difference between the indoor and outdoor sections should not exceed 20 ft.
• These units are equipped with single shot quick connect couplings. Together with the indoor section and line set, only four coupling connections are required to provide a 100% sealed system.
- Route the suction line and liquid line between indoor and outdoor sections, remove protector caps and plugs
- Lubricate entire surface of the diaphragm O-ring and threads of the male coupling using the lubricant supplied with the line set and a small brush.
- Make sure the coupling halves are held in proper alignment with each other prior to starting the threads of female coupling nut onto the male half.
Thread coupling halves together by hand until a defi nite resistance is felt.
- Using a marker, mark a line from the coupling union nut to the bulkhead then tighten an addition wrench fl at (60°). See Table 1 for torque values. Repeat for all couplings.
3/8” (10mm)
3/4” (19mm)
7.8” (22mm)
ELECTRICAL WIRING
WARNING:
To avoid risk of electrical shock, personal injury, or death, disconnect all electrical power to the unit before performing any maintenance or service.
The unit may have more than one electrical supply.
10-12 Ft-Lbs
(14-16 Nm)
35-45 Ft-Lbs
(47-61 Nm)
10-12 Ft-Lbs
(14-16 Nm)
Label all wires prior to disconnection when servicing the unit. Wiring errors can cause improper and dangerous operation.
Pre-Electrical Checklist:
Verify that the voltage, frequency, and phase of the supply source match the specifi cations on the unit rating plate. See Table 4 (page 11).
Verify that the service provided by the utility is suffi cient to handle the additional load imposed by this equipment.
Refer to the unit wiring label for proper voltage wiring.
Verify factory wiring is in accordance with the unit wiring diagram (Figures 5 - 7, pages 12 - 14). Inspect for loose connections.
3/4”
Table 1. Torque Values
11/16”
1-1/8” 1-5/16”
1-1/8” 1-5/16”
5/8”
1”
1”
• All electrical connections must be in compliance with all applicable local codes and ordinances, and with the current revision of the National Electric Code
(ANSI/NFPA 70).
• For Canadian installations the electrical connections and grounding shall comply with the current Canadian
Electrical Code (CSA C22.1 and/or local codes).
Line Voltage
• A wiring diagram is located on the inside cover of the electrical box of the outdoor unit. The installer should become familiar with the wiring diagram before making any electrical connections to the outdoor unit.
• An electrical disconnect must be located within
sight of and readily accessible to the unit. This switch shall be capable of electrically de-energizing the outdoor unit.
• Line voltage to the unit should be supplied from a dedicated branch circuit containing the correct fuse or circuit breaker for the unit. Incoming fi eld wiring and minimum size of electrical conductors and circuit protection must be in compliance with information listed on the outdoor unit data label. Any other wiring methods must be acceptable to authority having jurisdiction.
• The outdoor unit requires both power and control circuit electrical connections. Refer to the wiring diagram / schematic for identifi cation and location of outdoor unit fi eld wiring interfaces (Figures 5 - 7, pages 12 - 14).
Make all electrical connections in accordance with all applicable codes and ordinances.
• Overcurrent protection must be provided at the branch circuit distribution panel and sized as shown on the unit rating label and according to applicable local codes.
See the unit rating plate for minimum circuit ampacity and maximum overcurrent protection limits.
• Provide power supply for the unit in accordance with the unit wiring diagram, and the unit rating plate. Connect the line-voltage leads to the terminals on the contactor inside the control compartment.
• Use only copper wire for the line voltage power supply to this unit as listed in Table 2. Use proper code agency listed conduit and a conduit connector for connecting the supply wires to the unit. Use of rain tight conduit is recommended.
• 208/230 Volt units are shipped from the factory wired for 230 volt operation. For 208V operation, remove the
COPPER WIRE SIZE — AWG
(1% Voltage Drop)
4
3
3
6
4
4
2
1
2
2
Supply Wire Length-Feet
200 150
8
6
6
4
4
4
3
3
3
2
100
10
8
8
6
6
6
4
4
4
3
50
14
12
10
10
8
8
6
6
6
4
Supply Circuit
Ampacity
15
20
25
30
35
40
45
50
55
60
Wire Size based on N.E.C. for 60° type copper conductors.
lead from the transformer terminal marked 240V and connect it to the terminal marked 208V.
• Optional equipment requiring connection to the power or control circuits must be wired in strict accordance of the NEC (ANSI/NFPA 70), applicable local codes, and the instructions provided with the equipment.
Grounding jurisdiction.
WARNING:
The unit cabinet must have an uninterrupted or unbroken electrical ground to minimize personal injury if an electrical fault should occur. Do not use gas piping as an electrical ground !
This unit must be electrically grounded in accordance with local codes or, in the absence of local codes, with the National Electrical Code (ANSI/NFPA 70) or the CSA
C22.1 Electrical Code. Use the grounding lug provided in the control box for grounding the unit.
Thermostat Connections
• Thermostat connections should be made in accordance with the instructions supplied with the thermostat and the indoor equipment.
• The outdoor unit is designed to operate from a 24 VAC
Class II control circuit. The control circuit wiring must comply with the current provisions of the NEC (ANSI/
NFPA 70) and with applicable local codes having
• The low voltage wires must be properly connected to the units low voltage terminal block. Recommended wire gauge and wire lengths for typical thermostat connections are listed in Table 3.
• The thermostat should be mounted about 5 feet above the fl oor on an inside wall. DO NOT install the thermostat on an outside wall or any other location where its operation may be adversely affected by radiant heat from fi replaces, sunlight, or lighting fi xtures, and convective heat from warm air registers or electrical appliances. Refer to the thermostat manufacturer’s instruction sheet for detailed mounting and installation information.
Thermostat
Wire Gauge
24
22
20
18
Recommended T-Stat Wire
Unit to T-Stat (Length in FT)
2-Wire
(Heating)
55
90
140
225
5-Wire
(Heating/Cooling)
25
45
70
110
Table 3. Thermostat Wire Gauge
Table 2. Copper Wire Size
7
8
START UP & ADJUSTMENTS
Pre-Start Check List
Verify the indoor unit is level and allows proper condensate drainage.
Verify the outdoor coil and top of the unit are free from obstructions and debris, and all equipment access/ control panels are in place.
Verify air fi lters are cleaned and properly installed.
Verify duct work is sealed to prevent air leakage.
Verify line voltage power leads are securely connected and the unit is properly grounded.
Verify low voltage wires are securely connected to the correct leads on the low voltage terminal strip.
Verify power supply branch circuit overcurrent protection is sized properly.
Verify the thermostat is wired correctly.
Refrigerant Charging
WARNING:
NS6QD Split System Air Conditioners leave the factory with an R-410A refrigerant holding charge. Follow these charging instructions for maximum unit performance and effi ciency. Some local codes require licensed installation/service personnel to service this type of equipment.
Refrigerant charging must be done by qualifi ed personnel familiar with safe and environmentally responsible refrigerant handling procedures.
Under no circumstances should the owner attempt to install and/or service this equipment.
Failure to comply with this warning could result in property damage, personal injury, or death.
Start-Up Procedures
The thermostat's function mode should be set to OFF and the fan mode should be set to AUTO. Close all electrical disconnects to energize the system.
Air Circulation - Indoor Blower
1. Set the thermostat system mode on OFF and the fan mode to ON.
2. Verify the blower runs continuously. Check the air delivery at the supply registers and adjust register openings for balanced air distribution. If insuffi cient air is detected, examine ductwork for leaks or obstructions.
3. Set the thermostat fan mode to AUTO and verify the blower stops running.
System Cooling
1. Set the thermostat’s system mode to COOL and the fan mode to AUTO. Gradually lower the thermostat temperature setpoint below room temperature and verify the outdoor unit and indoor blower energize.
2. Verify blower wheel is spinning in direction indicated by arrow. Feel the air being circulated by the indoor blower and verify that it is cooler than ambient temperature. Listen for any unusual noises. If unusual sounds occur, determine the source of the noise and correct as necessary.
3. Verify HI and LO refrigerant pressures.
4. Allow the system to operate for several minutes and then set the temperature selector above room temperature. Verify the fan and compressor cycle off with the thermostat. NOTE: The blower should also stop unless fan mode is set to the ON position.
System Heating (optional)
1. Set the thermostat's system mode to HEAT and the temperature mode above room temperature.
2. Verify the optional heating equipment (furnace or electric heat) and indoor blower energize. Feel the air being circulated by the indoor blower and verify that it is warmer than ambient temperature. Listen for any unusual noises. If unusual sounds occur, determine the source of the noise and correct as necessary.
After refrigerant line connections are completed, it is required that you leak check and evacuate the indoor section and all line connections (using proper methods) before fi nalizing the full system refrigerant charge. For fi nal charges based on matched systems and specifi ed line lengths, see physical and electrical specifi cations
(Table 4, page 11).
• Refrigerant charging charts are applicable only to matched assemblies of NORDYNE equipment and listed airfl ows for the indoor coil. Refer to Figures 8 -
13 (pages 16 - 18) for correct system charging.
• NS6QD outdoor units with indoor coils not listed are not recommended. Deviations from rated airfl ows or non-listed combinations may require modifi cation to the expansion device and refrigerant charging procedures for proper and effi cient system operation.
• The refrigerant charge can be checked and adjusted through the service ports provided external to the outdoor unit. Use only gage line sets which have a
“Schrader” depression device present to actuate the valve.
Charging an R-410A system in AC mode at outdoor temperatures above 55° F for optimized sub-cooling of
10° F - 12° F.
1. With the system operating at steady-state, measure the liquid refrigerant pressure (in psig) at the outdoor unit service valve.
2. Measure the liquid refrigerant temperature (in
Fahrenheit) at the service valve.
3. Determine the required liquid refrigerant pressure from the appropriate charging chart (Figures 8 - 13).
• If the pressure measured in Step 1 is greater than the required liquid refrigerant pressure determined in
Step 3, then there is too much charge in the system.
Remove refrigerant and repeat Steps 1 through 3 until the system is correctly charged.
• If the pressure measured in Step 1 is less than the required liquid refrigerant pressure determined in
Step 3, there is too little charge in the system. Add refrigerant and repeat Steps 1 through 3 until the system is correctly charged.
AIR CONDITIONER MAINTENANCE
WARNING:
To prevent electrical shock, personal injury, or death, disconnect all electrical power to the unit before performing any maintenance or service.
The unit may have more than one electrical supply.
Proper maintenance is important to achieve optimum performance from the air conditioner. The ability to properly perform maintenance on this equipment requires certain mechanical skills and tools. If you do not possess these skills, contact your dealer for maintenance. Consult your local dealer about the availability of maintenance contracts.
Routine maintenance should include the following:
• Inspect and clean or replace air fi lters at the beginning of each heating and cooling season, or more frequently if required.
• Inspect the condensate drain and outdoor coil at the beginning of each cooling season. Remove any debris.
Clean the outdoor coil and louvers as necessary using a mild detergent and water. Rinse thoroughly with water.
• Inspect the electrical connections for tightness at the beginning of each heating and cooling season. Service as necessary.
COMPONENT FUNCTIONS
High Pressure Switch (HPS)
A high-pressure switch is factory-installed and located in the liquid line internal to the outdoor unit. The switch is designed to protect the system when very high pressures occur during abnormal conditions. Under normal conditions, the switch is closed. If the liquid pressure rises above 575 psig, then the switch will open and deenergize the outdoor unit. The switch will close again once the liquid pressure decreases to 460 psig. Please note that the switch interrupts the thermostat inputs to the unit. Thus, when the switch opens and then closes, there may be a 5 minute short cycling delay before the outdoor unit will energize.
REPLACEMENT PARTS
Replacement parts are available through all Nordyne distributors.
Please have the complete model and serial number of the unit when ordering replacement parts.
ELECTRICAL:
Capacitors
Compressors
Contactors
Pressure Switches
Relays
Temperature Limit Switches
Thermostats
Time Delay Relays
Transformers
MOTORS:
Blower Motor
Fan Motor
Blower Assembly
Cabinet Panels
Expansion Valves
COMPONENTS:
Fan Grille
Filter/Driers
CAUTION:
The unit should never be operated without a fi lter in the return air system. Replace disposable fi lters with the same type and size.
• Do not attempt to add additional oil to motors unequipped with oil tubes. The compressor is hermetically sealed at the factory and does not require lubrication.
9
10
FIGURES & TABLES
D W
H
Model Number
NS6QD-
024
030
036
042
048
060
Height -HWidth -W-
27"
27"
35"
27"
27"
31"
22 3/4"
22 3/4"
22 3/4"
30 3/4"
30 3/4"
30 3/4"
Figure 4. Unit Dimensions
Depth -D-
22 3/4"
22 3/4"
22 3/4"
30 3/4"
30 3/4"
30 3/4"
Model No. NS6QD
Electrical
Data
Volts-Cycles-Phase
Total Amps
Delay Fuse Max.
Min. Circuit Ampacity
Component
Data
Coil
Fan Motor
Fan Blade
Compressor Data
Refrigerant Suction Line: Length/O.D.
Liquid Line: All Lengths - 3/8”O.D.
Area
Rows-FPI
Tube Dia.
Type
Amps
Watts-HP
Dia.
# Blades
SCFM
RLA
LRA
15 - 24 ft.
25 - 39 ft.
40 - 75 ft.
24K
11.6
20
12.9
8.3
1-22
0.7
0.1
18”
3
2800
10.9
49
3/4”
3/4”
3/4”
30K
13
25
14.5
8.3
1-22
0.7
0.1
18”
3
3000
12.3
59
3/4”
3/4”
3/4”
36K 42K
3000
16.7
88
3/4”
7/8”
7/8”
208/230-60-1
18.1
23.5
25
20.1
35
26.2
13.3
1-22
15.3
1-16
MC
PSC
1.4
0.25
18”
4
1.4
0.25
24”
2
3500
22.1
115
7/8”
7/8”
7/8”
R-410A Refrigerant Charge (in Ounces):
(Outdoor unit, Indoor Unit - 15’ Line Set)
Approximate Weight (lbs.)
78 80 89
Net
Ship
113
118
116
121
135
140
Table 4. Electrical Specifi cations & Physical Data
88
157
163
48K
24.3
35
27.0
15.3
1-16
1.4
0.25
24”
2
3500
22.9
115
7/8”
7/8”
7/8”
110
163
169
1.4
0.25
24”
2
3800
29.3
150
7/8”
1-1/8”
1-1/8”
115
188
194
60K
30.7
40
34.2
17.8
1-16
11
12
WIRING DIAGRAM
Split System Air Conditioner (Outdoor Section) Single Phase
NOTES:
2. For supply connec tions use copper conductors only.
3. Not suitable on systems that exceed 150 volts to ground.
4. For replacement wires use conductors suitable for 105 deg C.
1. Couper le courant avant de faire letretien.
2. Employez uniquement des conducteurs
en cuivre.
3. Ne convient pas aux installations
de plus de 150 volt a la terre.
6. Connect to 24 vac/40ca/class 2 circuit. See furnace/airhandler installation
instructions for control circuit and optional relay/transformer kits.
7. Anti-Shor t Cycle Timer (ASCT) may or may not be installed in the unit. If desired,
ASCT is factory installed on select models only or may be field installed as shown using
manufacturer’s approved kit. If not present, connect Yellow and Black wires per Note 6.
8. DO NOT use a Hard Start Kit on a model with a PTCR installed .
R
C to T2 on capacitor
BLACK
208/230V BLUE
S
OUTDOOR
FAN MOTOR
BLACK
START
RELAY to “H” on capacitor
3
RED
YELLOW
START
CAPAC
2
1
L1 L2
ORANGE
F
PTCR
T1
PTCR(If equipped)
CCH
(OPTIONAL)
R
COMPRESSOR
CONTACTS
T2
C
DUAL
CAPACITOR
H
YELLOW BLACK
BLACK to”C” on capacitor
H
F
C
C
S
COMPRESSOR
S
ASCT
(SEE NOTE 7)
YELLOW/
BLACK
BLACK
CONTACTOR
T1 T2
L1 L2
24 VOLT FIELD
CONNECTIONS
HPS
CC
R
C
OUTDOOR FAN
MOTOR
ASCT
(SEE NOTE 7)
HPS
ASCT
T2
T1
T3
BLACK
R
YELLOW
YELLOW BLACK
WIRE NUT
SEE NOTE 6
CRANKCASE
HEATER
(OPTIONAL)
C
RED
S
L1 L2 GND
GROUNDING
SCREW
CC - Contac tor Coil
CCH - Crankcase Heater
HPS - High Pressure Switch
LEGEND:
FIELD WIRING
LOW VOLTAGE
HIGH VOLTAGE
7110050
Figure 5. NS6QD Wiring Diagram (2 - 2.5 Ton Units)
Figure 6. NS6QD Wiring Diagram (3 Ton Units)
13
14
Split System Air Conditioner (Outdoor Section)
NOTES:
Single Phase
1. Disconnect all power before servicing.
2. For supply connections use copper conductors only.
3. Not suitable on systems that exceed 150 volts to ground.
4. For replacement wires use conductors suitable for 105˚ C.
1. Couper le courant avant de faire letretien.
2. Employez uniquement des conducteurs en cuivre.
3. Ne convient pas aux installations de plus de 150 volt a la terre.
5. For ampacities and overcurrent protection, see unit rating plate.
6. Connect to 24 vac/40va/class 2 circuit. See furnace/air handler installation
instructions for control circuit and optional relay/transformer kits.
7. Anti-Short Cycle Timer (ASCT) may or may not be installed in the unit. If desired,
ASCT is factory installed on select models only or may be field installed as shown using manufacturer's approved kit. If not present, connect Yellow and Black wires per Note 6.
Orange
Blue
S
R
Outdoor
Fan Motor
C
Black
208/230V
L1
T1
CCH (Optional)
R
C
L2
Compressor
Contacts
T2
C
Dual
Capacitor H
F
Yellow
Red
Black
Yellow
3
Start
Relay
2
1
H
S Compressor
Red or
Yellow
Black
T1 T2
Start
Capacitor
C
F
Dual Capacitor
S
C
ASCT
(See
Note 7.)
T2
L1 L2
T1
T3
R
Outdoor
Fan Motor ASCT
(See
Note 7.)
HPS
T2 T1
CC
R
T3
ASCT
Grounding
Screw
See Note 6.
24 Volt Field
Connections
HPS
Legend Crankcase
Heater
(Optional)
C
Compressor
S
CC - Contactor Coil
CCH - Crankcase Heater
HPS-High Pressure Switch
Field Wiring
Factory Wiring:
Low Voltage
High Voltage
L1 L2 Grd
(1 Phase)
Field Supply
7103880
Figure 7. NS6QD Wiring Diagram (3.5 - 5 Ton Units)
NS6QD CHARGING CHARTS - COOLING ONLY
Application Notes on the Use of Charging Charts
• This equipment’s cooling system contains refrigerant under high pressure. Always use safe and environmentally sound methods when handling refrigerant handling or servicing the unit. Review the factory literature and safety warnings prior to servicing.
• When repairing system leakages, always use a nitrogen (inert) gas to protect the refrigerant system and pressure check the repair before re-charging. Always replace the fi lter-dryers when performing any repair to the refrigeration system with one capable of acid removal. After completing the repairs, evacuate the system to 350 - 500 microns and weigh in the refrigerant to the amount specifi ed on the unit rating label.
• Charging charts are valid for a variety of indoor, return air conditions and are most infl uenced by the outdoor ambient temperature, outdoor fan operation and the unit operating voltage. Before using these charts, ensure the unit is in a stable operating mode. As shown in the charging charts (Figures 8 - 13, page 16 - 18), the ideal system sub-cooling can vary over the range of operation. Reference the charts to determine the ideal amount of sub-cooling for a given liquid pressure. Units charged to other values will not perform at the rated unit effi ciency
(EER) or rated Coeffi cient of Performance (COP) in heating mode.
• To inspect a systems operation using quality instruments, match the measured liquid temperature to the units chart. The measured liquid pressure reading should be within 3% of the charts value for most installations.
• For systems that are operating with more than a 5% deviation, inspect the unit for the proper voltage and phase balance and the refrigeration system for leaks.
• Units that are operating at less then 95% of the nominal voltage or with a 2% phase imbalance may see a more signifi cant deviation than the amount stated above.
• DO NOT use the charts in systems that have a fan cycling under low-ambient control. Refer to the low-ambient kit instructions for more information. (If applicable)
15
16
NS6QD-024K TXV Charging Chart
625
600
575
550
525
500
475
450
425
400
375
350
325
300
275
250
75
Remove refrigerant when above curve
80 85 90 95 100 105
SEE NO
TE
Add refrigerant when below curve
110 115
Liquid Temperature ( ° F)
120 125 130 135
Figure 8. Charging Chart for 2 Ton Units
NOTE: Do not add or remove refrigerant if pressure reading is between the curves.
NS6QD-030K TXV Charging Chart
600
575
550
525
500
475
450
425
400
375
350
325
300
275
250
75
Remove refrigerant when above curve
80 85 90 95 100 105
SEE NO
TE
Add refrigerant when below curve
110 115
Liquid Temperature ( ° F)
120 125 130 135
Figure 9. Charging Chart for 2.5 Ton Units
NS6QD-036K TXV Charging Chart
600
575
550
525
500
475
450
425
400
375
350
325
300
275
250
75
Remove refrigerant when above curve
80 85 90 95
SEE NO
TE
Add refrigerant when below curve
100 105 110
Liquid Temperature ( ° F)
115 120 125 130 135
Figure 10. Charging Chart for 3 Ton Units
NOTE: Do not add or remove refrigerant if pressure reading is between the curves.
NS6QD-042K TXV Charging Chart
600
575
550
525
500
475
450
425
400
375
350
325
300
275
250
75
Remove refrigerant when above curve
80 85 90 95
SEE NO
TE
Add refrigerant when below curve
100 105 110 115 120 125 130 135
Liquid Temperature ( ° F)
Figure 11. Charging Chart for 3.5 Ton Units
17
18
NS6QD-048K TXV Charging Chart
600
575
550
525
500
475
450
425
400
375
350
325
300
275
250
75
Remove refrigerant when above curve
80 85 90 95
SEE NO
TE
Add refrigerant when below curve
100 105 110
Liquid Temperature ( ° F)
115 120 125 130 135
Figure 12. Charging Chart for 4 Ton Units
NOTE: Do not add or remove refrigerant if pressure reading is between the curves.
NS6QD-060K TXV Charging Chart
600
575
550
525
500
475
450
425
400
375
350
325
300
275
250
75
Remove refrigerant when above curve
80 85 90 95 100 105
SEE NO
TE
Add refrigerant when below curve
110 115
Liquid Temperature ( ° F)
120 125 130 135
Figure 13. Charging Chart for 5 Ton Units
19
INSTALLATION ADDRESS:
INSTALLATION / PERFORMANCE CHECK LIST
REFRIGERATION SYSTEM:
Was unit given 24 hr warm up period for crankcase heaters?
YES
CITY ________________________ STATE ________________
NO
Stage-1 Liquid Pressure (high side) ________________________
UNIT MODEL # ________________________________________
UNIT SERIAL # _______________________________________
Unit Installed Minimum clearances per
Figure 2 (page 5)?
YES NO
INSTALLER NAME:
Stage-1 Suction Pressure (low side) ________________________
Has the owner’s information been reviewed with the customer?
YES NO
Has the Literature Package been left with the unit?
YES NO
CITY _______________________ STATE ________________
ELECTRICAL SYSTEM:
Electrical connections tight?
Line voltage polarity correct?
YES
YES
NO
NO
Rated Voltage: ___________________________________ VOLTS
L1-L2 Volts: _____________________________________ VOLTS
L1-L3 Volts: _____________________________________ VOLTS
L2-L3 Volts: _____________________________________ VOLTS
Avg. Volts: ______________________________________ VOLTS
Max. deviation of voltage from avg. volts: ___________________________________ VOLTS
% Volt imbalance: ________________________________ VOLTS
Blower Motor HP: ________ Sheave Setting ___________# Turns
Has the thermostat been calibrated?
YES NO
Is the thermostat level?
YES NO
Is the heat anticipator setting correct?
(If Applicable)
YES NO
Specifi cations & illustrations subject to change without notice or incurring obligations.
O’ Fallon, MO | Printed in U.S.A. (07/10)
¢709217.¤
7092170
advertisement
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project