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InstallatIon InstructIons
GEothErMal hEat PuMP coMPrEssor sYstEM
60 hz
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 this unit 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 & KEEP In a saFE PlacE For FuturE rEFErEncE.
IMPortant
attEntIon InstallErs:
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Summary of Contents for Nortek Y1SA
- Page 1 InstallatIon InstructIons GEothErMal hEat PuMP coMPrEssor sYstEM 60 hz IMPortant attEntIon InstallErs: 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.
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Page 2: Table Of Contents
taBlE oF contEnts IMPortant saFEtY InForMatIon ....3 oPEratInG sEQuEncE ........11 Cooling ................11 rEQuIrEMEnts & coDEs ........4 Heating ................11 GEnEral InForMatIon ........4 unIt MaIntEnancE ..........12 Before You Install This Unit ........... 4 Filter / Drier ..............12 System Sizing .............. -
Page 3: Important Safety Information
IMPortant saFEtY InForMatIon WarnInG: Please read all instructions before servicing this equipment. Pay attention to all safety warnings and any other special these units are charged with holding charge of notes highlighted in the manual. Safety markings are used nitrogen at the factory. If repairs make it necessary for frequently throughout this manual to designate a degree or evacuation and charging, it should only be attempted level of seriousness and should not be ignored. -
Page 4: Requirements & Codes
• The use of Grout 111 is only authorized with the To achieve optimum performance and minimize equipment installation of the lineset associated with the nortek failure, it is recommended that periodic maintenance be Global HVAC Geothermal System. Use of Grout 111 performed on this unit. -
Page 5: Heating Load
heating load transition between the seasons, the compressor section is equipped with components and control logics described in Heating design loads must be calculated using at least 99 % the following sections. design dry bulb temperature (as listed in the ACCA Manual J Table 1A) for the desired geographic location. -
Page 6: Line Set Sizing Between Compressor Unit & Air Handler
Insulating Interior line sets Insulate all interior refrigerant lines and their connections. The compressor section contains the expansion valve and the 18” liquid line is more likely to “sweat” as it condenses moisture from the interior air. Use at least a 3/4 inch wall closed-cell insulation that is REAR non-corrosive to copper to insulate all refrigerant lines. -
Page 7: Electrical Connections
ElEctrIcal connEctIons Line Voltage • An electrical disconnect must be located within sight of and readily accessible to the unit. This switch shall be capable WarnInG: of electrically de-energizing the unit. See unit data label for proper incoming field wiring. Any other wiring methods must ElEctrIcal shocK, FIrE or be acceptable to authority having jurisdiction. -
Page 8: Compressor Electrical
rEFrIGErant charGInG & unIt start uP • Where local codes require that the thermostat wiring must be routed through a conduit or raceway, splices can be made inside the unit; however, all wiring must be NEC WarnInG: Class 1 and must be separated from incoming power leads. Recommended low voltage wire gauges and wire lengths ElEctrIcal shocK or FIrE hazarD are listed in... -
Page 9: Safety Requirements For Refrigerant Charging
notE: The entire refrigerant system must be fully evacuated Where the average height, length, and width is the actual occupant dimensions. More detailed definitions are given in prior to system charging. Otherwise, moisture could be Standard 15. present that could cause premature system damage and/ or failure. -
Page 10: Pulling A Vacuum
recommended r-410a charging Procedure LINE SET VApor LINE o.D. lInE After the installed system is evacuated and the electric wiring sEts 3/4” 7/8” is in place, the system is ready to be charged with R-410A refrigerant. R-410A charging is an important part of the system 0.86 0.96 installation. -
Page 11: System Check
4. If the system is over charged, recover liquid refrigerant 3. If the above conditions are met the compressor will start slowly from the charging port on the liquid line from the air and the reversing valve shift into position if not already in handler until the float is in the middle of the sight glass. -
Page 12: Unit Maintenance
Filter / Drier In either mode, if any condition causes a compressor stoppage to occur 5 times during a single Y1 input, the system will lock If the temperature drop across the filter/drier exceeds 3° F, out and not operate for 1 hour to allow well recovery. See it must be replaced. -
Page 13: Troubleshooting
trouBlEshootInG Nuts (x10) If the unit fails to operate check the following: • Is the thermostat operating properly and is it on the proper heat/cool temperature setting? Gasket • Is the circuit breaker tripped? Also check for a blown fuse Outlet Filter Nut in the air handler. -
Page 14: Loss Of Capacity
b.p. loss of capacity • If the system looses capacity (does not maintain the thermostat temperature setting), either the system is under- sized, there is a malfunctioning metering device, or there is a possible refrigerant leak. notE: If a leak occurs, head and suction pressures will be low, ice will likely form on the air handler refrigerant lines (when the system is in the cooling Figure 4. -
Page 15: Operating Pressures Are Too High Or Too Low
the system Doesn’t supply Warmed air In the while maintaining the full nitrogen flow rate into the liquid line. Continue to blast the full nitrogen flow until the sand Winter or cooled air In the summer or dirt is removed from the tubing. •... -
Page 16: Figures & Tables
FIGurEs & taBlEs Line Voltage Connections 1.54 Low Voltage Connections Liquid Line to Air Handler Vapor Line to 22.40 Air Handler 19.90 Vapor Line to 16.38 Earth Loop 13.86 11.25 8.72 Liquid Line to Earth Loop 5.26 5.42 Figure 5. Dimensions Control Low Voltage Board... - Page 17 Figure 7. Wiring Diagram...
- Page 18 Y1sa-E24K Y1sa-E36K Y1sa-E48K Y1sa-E60K norDYnE GshP GEothErMal sYstEM (2 ton) (3 ton) (4 ton) (5 ton) Volts-Cycles-Phase (1) 208/230V, 1phase, 60Hz Min. Circuit Ampacity (MCA) Max. Overcurrent Protection (MOP) compressor Data Rated Load Amps (RLA) 12.8 16.6 21.8 26.2 Locked Rotor Amps (LRA) 58.3...
- Page 19 Figure 9. climate Map...
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Page 20: Installation / Performance Check List
Filter(s) clean? Vapor line O.D. (Inches): ______ Liquid line O.D. (inches) _______ Specifications & illustrations subject to change without notice or incurring obligations (05/15). 709729B (Replaces 709729A) O’Fallon, MO, © Nortek Global HVAC LLC 2015. All Rights Reserved.
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