Nordyne Q4SE, Q4SE-X60, Q4SE-X48, Q4SE-X36, Q4SE-X24 Installation Manual

Q4SE SERIES 14 SEER
TWO STAGE R-410A SINGLE PACKAGE HEAT PUMP
Premium Model Shown
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 qualified 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.
important Safety information .................................... 3
About the Heat Pump ................................................. 3
Operating instructions ............................................... 3
Cooling Operation ..................................................... 3
Heating Operation ..................................................... 3
Emergency Heat ........................................................ 3
Defrost Operation ...................................................... 3
Operating the Heat Pump for Automatic
Cooling and Heating .................................................. 4
Oper. the Indoor Blower Continuously ....................... 4
Shutting the Heat Pump Off ...................................... 4
System Maintenance .................................................. 4
Regular Cleaning ....................................................... 4
Before You Call a Technician ..................................... 4
Troubleshooting .......................................................... 4
Warranty information ................................................. 4
Important Safety Information .................................... 5
General Information ................................................... 6
Pre -Installation Check ............................................. 6
Locating the Heat Pump Unit .................................... 6
Field Connections for Electrical Power
Supply ....................................................................... 6
Air Ducts ................................................................... 6
Unconditioned Spaces ........................................... 6
Acoustical Duct Work ............................................. 6
Air Filter Requirements ............................................. 7
Condensate Drain .................................................... 7
Heat Pump installation ............................................... 7
Packaging Removal ................................................... 7
Rigging and Hoisting ................................................. 7
Minimum Clearance Requirements ........................... 7
Horizontal to Downflow Conversion ........................... 7
Ground Level ............................................................. 8
Rooftop ...................................................................... 8
Electrical Wiring .......................................................... 8
Pre - Electrical Checklist ........................................... 8
Wiring Diagram / Schematic ...................................... 8
Line Voltage ............................................................... 8
Grounding .................................................................. 9
Selecting Proper Airflow for Variable Speed Units .....9
Selecting Basic Cool/Heat Pump Airflow ............... 9
Selecting Minimum Electric Heat Airflow ................ 9
Selecting the Delay Profile ..................................... 9
Demand Defrost Control .......................................... 11
Optional Comfort Alert TM Diagnostics Module ......... 11
24VAC Power Wiring ............................................ 11
Thermostat Demand Wiring ................................. 11
L Terminal Wiring ................................................. 11
DC SOL Connection ............................................ 12
Interpreting the Diagnostic LED's ......................... 12
LED Description ................................................... 12
Installation Verification ......................................... 12
Troubleshooting the Installation ............................ 12
Optional Humidistat ................................................. 13
Optional Electric Heater Kits ................................... 13
Optional Outdoor Thermostat .................................. 13
Ambient Sensor Mounting ....................................... 13
Thermostat Connections ......................................... 14
Startup & Adjustments ............................................ 14
Pre - Start Checklist ................................................ 14
Start-up Procedure .................................................. 14
Air Circulation ....................................................... 14
Short Cycle Protection ......................................... 14
System Cooling .................................................... 14
System Heating .................................................... 15
Refrigerant Chargmg ............................................... 15
Charging an R-410A Unit in AC Mode .................... 15
Charging an R-410A Unit in Heating Mode ............. 15
Heat Pump Maintenance .......................................... 15
Figures & Tables ....................................................... 16
Figure 9. Q4SE Heat Pump Dimensions .............. 16
Table 7. Center of Gravity & Shipping Weights ..... 16
Electrical Information ............................................... 17
Figure 10. Heat Pump T-Stat Connections ........... 17
Figure 11. Wiring Diagram for Two-Stage Cool &
Two-Stage Heat ................................... 18
Figure 12. Wiring Diagram for Two-Stage Cool &
Two-Stage Heat w/Comfort Alert ........ 19
Cooling Charging Charts ......................................... 20
Figure 13. Charging Chart for 2 Ton Units ............ 20
Figure 14. Charging Chart for 3 Ton Units ............ 20
Figure 15. Charging Chart for 4 Ton Units ............ 21
Figure 16. Charging Chart for 5 Ton Units ............ 21
Troubleshooting ....................................................... 22
Table 8. LED Diagnostics ..................................... 22
Table 9. Module Wiring Troubleshooting ............... 24
IMPORTANTSAFETYINFORMATION
Safetymarkingsare usedfrequentlythroughoutthis manualtodesignateadegreeorlevelofseriousnessand shouldnotbeignored.WARNINGindicatesapotentially hazardoussituationthatif notavoided,couldresultin personalinjuryordeath.CAUTIONindicatesapotentially hazardoussituationthatifnotavoided,mayresultinminor ormoderateinjuryorpropertydamage.
ABOUTTHEHEATPUMP
Yourheatpumpisaunique,allweathercomfort-control appliancethatwillheatandcoolyourhomeyearround andprovideenergysavingcomfort.It'sanunknownfact thatheatisalwaysin theair,evenwhentheoutside temperatureisbelowfreezing.Theheatpumpusesthis basiclawofphysicstoprovideenergysavingheatduring thewintermonths.Forexample,Iftheoutdoortemperature is47°F(8°C),yourheatpumpcandeliverapproximately
3.5unitsofheatenergypereachunitofelectricalenergy used,ascomparedtoa maximumofonly1unitofheat energyproducedwithconventionalheatingsystems.
Incoldertemperatures,theheatpumpperformslikeanair conditionerruninreverse.Availableheatenergyoutside thehomeisabsorbedbytherefrigerantandexhausted insidethehome.Thisefficientprocessmeansyouonly payfor"moving"theheatfromtheoutdoorstotheindoor area.Youdonotpaytogeneratetheheat,asisthecase withmoretraditionalfurnacedesigns.
Duringsummer,theheatpumpreversestheflowofthe heat-absorbingrefrigeranttobecomeanenergy-efficient, centralairconditioner.Excessheatenergyinsidethe homeis absorbedby the refrigerantand exhausted
outsidethehome.
OPERATING INSTRUCTIONS
Please referto 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 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.
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 five minutes following a previous operation or the interruption of the main electrical power.
Fan System Temperature
Mode Mode Selector
Figure 1. Digital Thermostat
Emergency Heat Some thermostats may include a system mode called EM HT or AUX HT, etc. This is a back-up heating mode that should only be used if a problem is suspected. With the mode set to EM HT, etc., the compressor and outdoor fan will be locked offand supplemental heat (electric resistance heating) will be used as a source of heat. Sustained use of electric resistance heat in place of the heat pump will result in an increase in electric utility costs.
Defrost Operation During cold weather heating operation, the outdoor unit will develop a coating of snow and ice on the heat transfer
coil. This is normal and the unit will defrost itself. This unit features a Demand Defrost board that monitors ambient
and coil temperatures to regulate the defrost function accordingly.
Atthebeginningofthedefrostcycle,boththeoutdoor condenserfan and compressorwill turn off. After approximately30seconds,thecompressorwillturnon andbegintoheattheoutdoorcoilcausingthe iceand
snowtomelt. NOTE:Whiletheiceandsnowismelting,somesteam
mayrisefromtheoutdoorunitasthewarmcoilcausesthe meltingfrosttoevaporate.Whendefrostiscompleted,the outdoorfanmotorwillstart,andthecompressorwillturn offagain.Inapproximately30secondsthecompressor willstartupagainandcontinuenormaloperation.
OperatingtheHeatPump for Automatic Cooling
and Heating
HEAT PUMP MAINTENANCE
/b, 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 qualified service technician at least once a year.
Follow the maintenance schedule and the instructions below for years of safe, trouble free operation.
,
Set the thermostat system switch to AUTO and the thermostat fan switch to AUTO. See Figure 1.
NOTE: Thermostat styles vary. Some models will not include the AUTO mode and others will have the
AUTO in place of the HEAT and COOL. Others may include all three. Refer to the instructions supplied with your thermostat for specific instructions.
,
Set the thermostat temperature to the desired heating and cooling temperatu relevel(s).The outdoor unit and the indoor blower will then cycle on and off in either the heating or cooling mode of operation as required toautomatically maintain the indoor temperature within
the desired limits.
Operating the Indoor Blower Continuously The continuous indoor blower operation istypically used to circulate the indoorair to equalize a temperature unbalance due to a sun load, cooking, or fireplace 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 OFR
Shutting the Heat Pump 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.
Regular Cleaning
Clean or replace the indoor air filter at the start of each
heating and cooling season, and when an accumulation of dust and dirt is visible on the air filter.
Remove any leaves and grass clippings from the coil
in the outdoor unit, being careful not to damage the aluminum fins.
Check for obstructions, such as twigs, sticks, etc.
TROUBLESHOOTING
If the unit 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.
The unit disconnect fuses are in good condition and
the electrical power to the unit is turned on.
WARRANTY INFORMATION
A warranty certificate with full details is included with the heat pump. 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 specific examples of service calls which are not included in the limited warranty are:
Correcting wiring problems in the electrical circuit supplying the heat pump.
Resetting circuit breakers or other switches.
Adjusting or calibrating of thermostat.
IMPORTANTSAFETYINFORMATION
Safetymarkingsare usedfrequentlythroughoutthis manualtodesignateadegreeorlevelofseriousnessand shouldnotbeignored.WARNINGindicatesapotentially hazardoussituationthatif notavoided,couldresultin personalinjuryordeath.CAUTIONindicatesapotentially hazardoussituationthatifnotavoided,mayresultinminor ormoderateinjuryorpropertydamage.
WARNING:
Do not place combustible material on or against the unit cabinet. Do not place combustible materials, including gasoline and any other flammable vapors and liquids, in the vicinity of
the unit.
WARNING:
improper installation, service, adjustment, or
maintenance may cause explosion, fire, 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.
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.
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 qualified, 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 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. This equipment contains liquid and gaseous refrigerant under high pressure. Installation or servicing should only be performed by qualified 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 (ANSl/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, fire extinguisher, etc.) when performing brazing operations.
Installthis unitonly ina location and position as specified 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 offuel, 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.
GENERALINFORMATION
Thissinglepackageheatpumphasbeendesignedand testedforcapacityandefficiencyinaccordancewithA.R.I. Standards.Thisunitwillprovidemanyyearsofsafeand dependablecomfort,providingitisproperlyinstalledand maintained.Thisheatpumpisdesignedonlyforoutdoor installations.Withregularmaintenance,this unitwill operatesatisfactorilyyearafteryear.Abuse,improper use,and/orimpropermaintenancecanshortenthelife oftheapplianceandcreateunsafehazards.
Toachieveoptimumperformanceandminimizeequipment failure,itisrecommendedthatperiodicmaintenancebe performedon thisunit.Theabilityto properlyperform maintenanceon this equipment requires certain
mechanical skills and tools. Pre-lnstallation Check
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 becompletely insulated and vapor sealed.
Check the electrical supply and verify the power supply
is adequate for unit operation. If there is any question
concerning the power supply, contact the local power
company.
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 fins are straight. Ifnecessary, comb fins to remove flattened or bent fins. Claims for damage (apparent or
concealed) should be filed 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 Heat Pump
Survey the job site to determine the best location for
mounting the outdoor unit.
Choose an appropriate location that minimizes the
length of the supply and return air ducts.
Overhead obstructions, poorly ventilated areas, and
areas subject to accumulation of debris should be
avoided.
Sufficient clearance for unobstructed airflowthrough the
outdoorcoil must bemaintained in order to achieve rated
performance. See Figure 2 for minimum clearances to
obstructions.
Consideration should also be given to availability of
electric power, service access, noise, and shade.
Electrical power supplied to the unit must be adequate
for proper operation of the equipment. The system
must be wired and provided with circuit protection in
accordance with local building codes.
Air Ducts This unit isdesigned only for use with a supply and return
duct. Air ducts must be installed in accordance with the standards of the National Fire Protection Association
Standard for installation of Air Conditioning Systems
(NFPA 90A), Standard for Installation of Residence Type Warm Air Heating and Air Conditioning Systems (NFPA 90B), and all applicable local codes. NFPA publications are avaialable by writing to: National Fire Protection Association, Batterymarch Park, Quincy, ME 02269 or visit www.NFPA.org on the web.
Design the duct work according to methods described bythe Air Conditioning Contractors of America (ACCA). The ducts must be properly sized not to exceed .2" W.C. pressure drop at 400 scfm per nominal ton of cooling capacity.
Duct work should be attached directly to the unit flanges for horizontal applications.
If roof curb is installed, the ducts must be attached to the curb hangers, not the unit.
Unconditioned Spaces All duct work passing through unconditioned space must be properly insulated to minimize duct losses and prevent condensation. Use insulation with an outer vapor barrier.
Refer to local codes for insulation material requirements. Acoustical Duct Work
Certain installations may require the use of acoustical
lining inside the supply duct work.
Acoustical insulation must be in accordance with the current revision of the Sheet Metal and Air Conditioning
Contractors National Association (SMACNA) application standard for duct liners.
mmmmmmmmmmmmmmmmmmm___
36" For Coil Only 0"
' !
d3
1:3-
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Z
Field Connections for Electrical Power Supply = All wiring must comply with current provisions of the
National Electrical Code (ANSl/NFPA 70) and with applicable local codes having jurisdiction.
= The minimum size of electrical conductors and circuit
protection must be in compliance with information listed on the outdoor unit data label.
.......... i Minimum Required _.
Figure 2. Clearance Requirements
Clearances to ObstructionsJ
DuctliningmustbeULclassifiedbattsorblanketswith afirehazardclassificationofFHC-25/50orless.
Fiberductworkmaybeusedinplaceofinternalduct linersifthefiberductworkisinaccordancewiththe
currentrevisionoftheSMACNAconstructionstandard onfibrousglassducts.Fibrousductworkandinternal
acousticalliningmustbeNFPAClass1airductswhen
testedperULStandard181forClass1ducts.
HEAT PUMP INSTALLATION
Packaging Removal
Remove the shipping carton and User's Manual from the equipment.Take care not todamage the tubing connections when removing the carton. Forrooftop installations,remove and discard the two supports attached beneath the unit.
Rigging and Hoisting
Air Filter Requirements
WARNING:
Never operate the unit without a filter in place. Dust and lint could accumulate on internal parts,
resulting in loss of efficiency, equipment damage and possible fire.
This unit is not supplied with air filter(s) and has no factory equipped means for accomodating internal
filter(s). A suitable air filter must be installed upstream
of the evaporator coil of the return air system. All return air must pass through the filters before entering
the evaporator coil. It is important that all filters be
kept clean and replaced frequently to ensure proper operation of unit. Dirty or clogged filters will reduce the
efficiency of the unit and result in unit shutdowns.
o
Air filter pressure drop must not exceed 0.08 inchesWC.
o
Downflow Installations require an internal filter accessory kit to be installed. Horizontal Installations require the air filter system be
installed in the return air ductwork.
Condensate Drain Condensate is removed from the unit through the 3/4"
female pipe fitting located on the front side of the unit (See Figure 3). install a 2 inch condensate trap in the drain line of the same size and prime with water. When connecting rigid drain line, hold the female fitting with a wrench to prevent twisting. Do not over tighten! Refer to local codes and restrictions for proper condensate disposal requirements.
WARNING:
To avoid the risk of property damage, personal
injury, or death, it is the rigger's responsibility
to ensure that whatever means are used to hoist the unit are safe and adequate:
,, The lifting equipment must be adequateforthe
load. Refer toTable 7 (page 16) for unit weights.
The unit must be lifted from the holes in the
base rails using cables or chains. Spreader bars are required to protect the unit
and ensure even loading.
Keep the unit in an upright position at all times.
The rigging must be located outside the units
center of gravity. Refer to Figure 9 (page 16)
for locating the center of gravity.
All panels must be securely in place during
rigging and hoisting.
Minimum Clearance Requirements Q4SE units are certified as combination heating and cooling equipment for outdoor rooftop or ground level
installations. Figure 2 (page 6) displays the minimum clearances to obstructions for both Downflow and
Horizontal discharge.
Units may be installed on Class A, B, or C roof covering
material when used with bottom supply and return air ducts as long as the following requirements are met:
If using vertical supply and return air ducts, a roof curb
must be installed prior to unit installation. See Rigging
and Hoisting section for setting of the unit.
Condensate
Drain
Figure 3. Condensate Drain Location
Horizontal to Downflow Conversion The unit is shipped ready for horizontal duct connections.
Ifdown flow ducts are required, the unit must be converted following the steps below for both the supply and return
ducts.
1. Remove the horizontal duct cap.
2. Locate the duct cap inside the duct openings and
remove the screw holding it in place.
3. Lift the cap out of the unit. (Hint: The cap can be
pushed up from the bottom by reaching through the fork slot).
4. Cover the horizontal duct opening with the horizontal
duct cap. The insulation will be on the indoor side.
5. Fasten the cover with screws to seal.
7
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 (page 6).
A suitable mounting pad (Figure 4) must be provided and be separate from the building foundation.The pad must be level to ensure proper condensate disposal and strong enough to support the unit's weight. The slab height must bea minimum of 2" (5cm) above grade and with adequate drainage. Ductwork should be attached directly to flanges on the supply and return panels.
/
/
/
/,
/
/
/
/
/
Figure 4. Ground Level Installation
Rooftop Rooftop installations must be located according to local building codes or ordinances and these requirements:
The roof must be capable of handling the weight of the unit. For unit weights, see Table 7 (page 16). Reinforce
the roof if necessary.
The appropriate accessory roof curb (Figure 5) must be installed prior to unit installation.The roof curb must be square and level to ensure proper condensate drainage. Please follow all instructions provided with the kit.
= Secure roof curb or frame to roof using acceptable
mechanical methods per local codes. NOTE: Make sure
the two supports beneath the unit have been removed.
Roof Curb
Figure 5. Roof Top Installation
ELECTRICAL WIRING
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.
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).
Pre-Electrical Checklist:
Verify that the voltage, frequency, and phase of the supply source match the specifications on the unit
rating plate. Verify that the service provided bythe utility is sufficient to handlethe additional load imposed bythis equipment.
refer to the unit wiring label for proper high and low voltage wiring. Verify factory wiring is inaccordance with the unit wiring diagram (Figures 11 - 12, pages 18- 19). Inspect for
loose connections.
Wiring Diagram / Schematic A wiring diagram/schematic is located onthe inside cover of
the electrical box of the outdoor unit. The installer should become familiar with the wiring diagram/schematic before
making any electrical connections to the outdoor unit. Line Voltage
It is recommended that the line voltage to the unit be supplied from a dedicated branch circuit containing
the correct fuse or circuit breaker for the 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. See unit data label for proper incoming field wiring, Any other wiring methods must be acceptable to authority having jurisdiction.
= Overcurrent protection must be provided atthe 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 maximum 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 1 (page 10). Use proper code agency listed conduit and a conduit connector
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