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T4QD SerieS SpliT SySTem HeaT pump For manuFacTureD HouSing
inSTallaTion inSTrucTionS
2, 2.5, 3, 3.5, 4, & 5 Ton, 13 Seer, Single phase models With Quick connect couplings
imporTanT SaFeTy inFormaTion ................. 2
HeaT pump inSTallaTion ................................ 3
General Information .............................................. 3
Before You Install this Unit ..................................... 3
Locating the Heat Pump........................................ 3
Packaging Removal .............................................. 3
Ground Level ......................................................... 3
Roof Mount............................................................ 3
Indoor & Outdoor Unit ........................................... 4
elecTrical Wiring ........................................... 4
Pre - Electrical Checklist ....................................... 4
Line Voltage ........................................................... 4
Thermostat Connections ....................................... 5
Blower Time Delay Relay ...................................... 6
Grounding ............................................................. 6
STarTup & aDjuSTmenTS ............................... 6
Pre - Start Checklist .............................................. 6
Start-up Procedures .............................................. 6
Air Circulation - Indoor Blower .............................. 6
System Cooling ..................................................... 6
System Heating ..................................................... 6
Refrigerant Charging ............................................. 6
Outdoor Temperatures Above 55° F ...................... 7
it is your responsibility to know this product better than your customer. This includes being able to install the product
according to strict safety guidelines and instructing the customer on how to operate and maintain the equipment for
the life of the product. Safety should always be the deciding factor when installing this product and using common
sense plays an important role as well. pay attention to all safety warnings and any other special notes highlighted
in the manual. improper installation of the furnace or failure to follow safety warnings could result in serious injury,
death, or property damage.
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. return these instructions to the customer's package
for future reference.
Do noT DeSTroy. pleaSe reaD careFully anD Keep in a SaFe place For FuTure reFerence.
HeaT pump mainTenance ............................... 7
componenT FuncTionS .................................. 8
cHarging TableS - cooling moDe ............. 8
Table 4. Charging Table for 2 Ton Units ............... 9
Table 5. Charging Table for 2.5 Ton Units ............ 9
Table 6. Charging Table for 3 Ton Units ............... 9
cHarging cHarTS - cooling moDe .......... 10
Figure 3. Charging Chart for 2 Ton Units ........... 10
Figure 4. Charging Chart for 2.5 Ton Units ........ 10
Figure 5. Charging Chart for 3 Ton Units ........... 11
Figure 6. Charging Chart for 3.5 Ton Units ........ 11
Figure 7. Charging Chart for 4 Ton Units ........... 12
Figure 8. Charging Chart for 5 Ton Units ........... 12
cHarging TableS - HeaTing moDe ............ 13
Table 7. Charging Table for 2 Ton Units ............. 14
Table 8. Charging Table for 2.5 Ton Units .......... 14
Table 9. Charging Table for 3 Ton Units ............. 14
Table 10. Charging Table for 3.5 Ton Units ........ 15
Table 11. Charging Table for 4 Ton Units ........... 15
Table 12. Charging Table for 5 Ton Units ........... 15
Wiring DiagramS ............................................ 16
Figure 9. T4QD Wiring Diagram ....................... 16
inSTall. / perFormance cHecKliST ......... 20
replacemenT parTS ...................................... 20
imporTanT
aTTenTion inSTallerS:
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Summary of Contents for Nordyne T4QD Series
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Page 1: Table Of Contents
T4QD SerieS SpliT SySTem HeaT pump For manuFacTureD HouSing inSTallaTion inSTrucTionS 2, 2.5, 3, 3.5, 4, & 5 Ton, 13 Seer, Single phase models With Quick connect couplings imporTanT SaFeTy inFormaTion ....2 HeaT pump mainTenance ....... 7 HeaT pump inSTallaTion ........ 3 componenT FuncTionS ........ -
Page 2: Important Safety Information
imporTanT SaFeTy inFormaTion Warning: INSTALLER: Please read all instructions before servicing this equipment. Pay attention to all safety warnings and unless noted otherwise in these instructions, only any other special notes highlighted in the manual. Safety factory authorized parts or accessory kits may be markings are used frequently throughout this manual to used with this product. -
Page 3: Heat Pump Installation
To prevent damage to the tubing connections, general information carefully remove the carton and user’s manual from the The T4QD series heat pump is designed only for outdoor equipment. Discard the shipping carton. rooftop or ground level installations. This unit has been... -
Page 4: Connecting Refrigerant Tubing Between The Indoor & Outdoor Unit
connecting refrigerant Tubing between the indoor 3. Make sure that coupling halves are held in proper & outdoor unit alignment with each other prior to starting the threads of female coupling nut onto the male half. Thread coupling cauTion: halves together by hand until a defi nite resistance is felt. -
Page 5: Thermostat Connections
• an electrical disconnect must be located within Thermostat connections • Thermostat connections should be made in accordance sight of and readily accessible to the unit. This switch shall be capable of electrically de-energizing with the instructions supplied with the thermostat and the outdoor unit. -
Page 6: Startup & Adjustments
STarT up & aDjuSTmenTS recommended T-Stat Wire pre-Start check list Unit to T-Stat (Length in FT) √ Verify the indoor unit is level and allows proper Thermostat condensate drainage. Wire gauge 2-Wire 5-Wire √ Verify the outdoor coil and top of the unit are free from (Heating) (Heating/Cooling) obstructions and debris, and all equipment access/... -
Page 7: Refrigerant Charging
Consult your • Refrigerant charging charts are applicable only to local dealer about the availability of maintenance contracts. matched assemblies of NORDYNE equipment and Routine maintenance should include the following: • Inspect and clean or replace air filters at the beginning listed airflows for the indoor coil. -
Page 8: Component Functions
Low Pressure Switch (LPS) - A low-pressure switch is componenT FuncTionS High Pressure Switch (HPS) - A high-pressure switch factory-installed in select models only. If provided, this located in the suction line internal to the outdoor unit. The is factory-installed and located in the liquid line internal switch is designed to protect the compressor from a loss to the outdoor unit. - Page 9 OUTDOOR TEMPERATURE (° F) Suct. press. liq. Dis. liq. Dis. liq. Dis. liq. Dis. liq. Dis. liq. Dis. liq. Dis. liq. Dis. press. Temp. press. Temp. press. Temp. press. Temp. press. Temp. press. Temp. press. Temp. press. Temp. Table 4. Charging Table for T4QD-024KA Series (2 Ton Units) - Orifice Matches OUTDOOR TEMPERATURE (°...
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Page 10: Charging Charts - Cooling Mode
Remove refrigerant when above curve Add refrigerant when below curve Liquid Temperature [F] Figure 3. Charging Chart for T4QD-024K Series (2 Ton Units) - TXV Matches Remove refrigerant when above curve Add refrigerant when below curve Liquid Temperature [F] Figure 4. Charging Chart for T4QD-030K Series (2.5 Ton Units) - TXV Matches... - Page 11 Remove refrigerant when above curve Add refrigerant when below curve Liquid Temperature [F] Figure 5. Charging Chart for T4QD-036K Series (3 Ton Units) - TXV Matches Remove refrigerant when above curve Add refrigerant when below curve Liquid Temperature [F] Figure 6. Charging Chart for T4QD-042K Series (3.5 Ton Units) - TXV Matches...
- Page 12 Remove refrigerant when above curve Add refrigerant when below curve Liquid Temperature [F] Figure 7. Charging Chart for T4QD-048K Series (4 Ton Units) - TXV Matches Remove refrigerant when above curve Add refrigerant when below curve Liquid Temperature [F] Figure 8. Charging Chart for T4QD-060K Series (5 Ton Units) - TXV Matches...
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Page 13: Charging Tables - Heating Mode
applicaTion noTeS For uSing T4QD HeaT moDe VERiFiCATiOn TABLES - HEATing OnLy legenD noTeS: Shaded boxes indicate flooded conditions. 1. All pressures are listed psig and all temperatures in °F Rated design values. Suction pressure will 2. Discharge temperatures greater than charted values vary from design value if outdoor air flow, indicate an undercharged system . -
Page 16: Wiring Diagrams
Wiring DiagramS Yellow Figure 9. T4QD Wiring Diagram... -
Page 20: Install. / Performance Checklist
Is the heat anticipator setting correct? Has the Literature Package been left (If Applicable) with the unit? 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...