Nortek FT4BE-K Installation Instructions Manual

splIt sYstEm HEat pump WItH mIcrocHannEl coIls
InstallatIon InstructIons
t4BE - 018, 024, 030, 036, 042, 048, & 060 (1.5, 2, 2.5, 3, 3.5, 4, & 5 ton) series
sInglE pHasE modEls
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
Rooftop.................................................................. 3
Connecting Refrigerant Tubing Between the
Indoor & Outdoor Unit ........................................... 4
Outdoor Orifice Removal & Installation ................. 4
ElEctrIcal WIrIng ........................................... 5
Pre - Electrical Checklist ....................................... 5
Line Voltage ........................................................... 5
Grounding ............................................................. 6
Thermostat / Low Voltage Connections ................. 6
TM
CoreSense Diagnostics Module ......................... 6
Compressor Protection ....................................... 6
Resetting Alert Codes ......................................... 7
startup & adjustmEnts ............................... 8
Pre - Start Checklist .............................................. 8
Start-up Procedures .............................................. 8
Air Circulation - Indoor Blower .............................. 8
Short Cycle Protection .......................................... 8
System Cooling ..................................................... 8
System Heating ..................................................... 8
Defrost Control Board Test Pins ............................ 8
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 ............................... 8
rEfrIgErant cHargIng ................................. 9
Charging the Unit in AC Mode with
Outdoor Temperatures Above 55° F ...................... 9
cHargIng cHarts - coolIng onlY ........... 10
Figure 5. Charging Chart for 1.5 Ton Units ........ 10
Figure 6. Charging Chart for 2 Ton Units ........... 11
Figure 7. Charging Chart for 2.5 Ton Units ........ 11
Figure 8. Charging Chart for 3 Ton Units ........... 12
Figure 9. Charging Chart for 3.5 Ton Units ........ 12
Figure 10. Charging Chart for 4 Ton Units ......... 13
Figure 11. Charging Chart for 5 Ton Units ......... 13
HEat modE VErIfIcatIon taBlEs ................ 14
Table 4. Verification Table for 1.5 Ton Units ....... 15
Table 5. Verification Table for 2 Ton Units .......... 15
Table 6. Verification Table for 2.5 Ton Units ....... 15
Table 7. Verification Table for 3 Ton Units .......... 15
Table 8. Verification Table for 3.5 Ton Units ....... 16
Table 9. Verification Table for 4 Ton Units .......... 16
Table 10. Verification Table for 5 Ton Units ........ 16
WIrIng dIagrams ............................................ 17
Figure 12. Wiring Diagram for 1.5 - 5 Ton
Units Equipped with CoreSense
Figure 13. Wiring Diagram for 1.5 - 5 Ton
Units NOT Equipped with CoreSense
Figure 14. Wiring Diagram for 1.5 - 5 Ton
Units Equipped with Low Pressure Switch ........ 19
Install. / pErformancE cHEcKlIst ......... 20
rEplacEmEnt parts ...................................... 20
Important
attEntIon InstallErs:
14 sEEr
TM
.................... 17
TM
............ 18