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18-AC104D1-1E-EN

ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES

IMPORTANT — This Document is customer property and is to remain with this unit.  Please return to service informa-
tion pack upon completion of work.

Heat Pumps

These instructions do not cover all variations in systems or provide for every possible contingency to be met in connection with 
the installation. Should further information be desired or should particular problems arise which are not covered sufficiently for the 
purchaser’s purposes, the matter should be referred to your installing dealer or local distributor.

Note:

 The manufacturer recommends installing only approved matched indoor and outdoor systems. All of the manufacture’s split 

systems are A.H.R.I. rated only with TXV/EEV indoor systems. Some of the benefits of installing approved matched indoor and 

outdoor split systems are maximum efficiency, optimum performance and the best overall system reliability.

4TWR6

Installer’s Guide

Table of Contents

Section 1. Safety

 ..................................................................................... 2

Section 2. Unit Location Considerations

 ............................................. 3

Section 3. Unit Preparation

 .................................................................... 5

Section 4. Setting the Unit

 ..................................................................... 5

Section 5. Refrigerant Line Considerations

 ......................................... 6

Section 6. Refrigerant Line Routing

 ..................................................... 7

Section 7. Refrigerant Line Brazing

 ...................................................... 8

Section 8. Refrigerant Line Leak Check

 ............................................. 10

Section 9. Evacuation

 .......................................................................... 11

Section 10. Service Valves

 .................................................................. 11

Section 11. Electrical - Low Voltage

 ................................................... 13

Section 12. Electrical - High Voltage

 .................................................. 15

Section 13. Start Up

 .............................................................................. 16

Section 14. System Charge Adjustment

 ............................................. 17

Section 15. Checkout Procedures and Troubleshooting

 .................. 23

Содержание 4TWR6

Страница 1: ...pproved matched indoor and outdoor systems All of the manufacture s split systems are A H R I rated only with TXV EEV indoor systems Some of the benefits of installing approved matched indoor and outd...

Страница 2: ...component replacement For specific handling concerns with R 410A and POE oil reference Retrofit Bulletins SS APG006 EN and APP APG011 EN Extreme caution should be exercised when opening the Liquid Li...

Страница 3: ...f be sure the roof will support the unit s weight Properly selected isolation is recommended to alleviate sound or vibration transmission to the building structure 1 The maximum length of refrigerant...

Страница 4: ...ubbery to ensure adequate airflow Outdoor unit location must be far enough away from any structure to prevent excess roof runoff water or icicles from falling directly on the unit NOTE It is recommend...

Страница 5: ...ing the unit on a support pad such as a concrete slab consider the following The pad should be at least 1 larger than the unit on all sides The pad must be separate from any structure The pad must be...

Страница 6: ...ry Charge 5 4 Refrigerant Line Insulation Important The Vapor Line must always be insulated DO NOT allow the Liquid Line and Vapor Line to come in direct metal to metal contact Vapor Line Liquid Line...

Страница 7: ...from the refrigerant lines For Example When the refrigerant lines have to be fastened to floor joists or other framing in a structure use isolation type hangers Isolation hangers should also be used w...

Страница 8: ...e or other appropriate method every 8 ft 8 Feet Maximum Isolation Through Wall DO NOT hang line sets from ductwork Sealant Insulation Vapor Line Wall Ductwork Isolator Line Set Section 7 Refrigerant L...

Страница 9: ...orrect direction of refrigeration flow away from outdoor unit and toward evapo rator coil as illustrated Braze the filter drier to the Liquid Line Continue the dry nitrogen purge Do not remove the wet...

Страница 10: ...P 2 Check for leaks by using a soapy solu tion or bubbles at each brazed location Remove nitrogren pressure and repair any leaks before continuing Section 8 Refrigerant Line Leak Check 8 1 Check For L...

Страница 11: ...ete blank off the vacuum pump and micron gauge and close the valves on the manifold gauge set 1 MIN Section 10 Service Valves 10 1 Open the Gas Service Valve 0350 Microns ON OFF CAP 1 4 TURN ONLY COUN...

Страница 12: ...STEP 3 Replace the valve cap to prevent leaks Tighten finger tight plus an additional 1 6 turn Cap Rolled Edge to Captivate Stem Hex Headed Valve System Service Port 3 16 Hex Wrench Unit Side of Servi...

Страница 13: ...Handler Outdoor Unit R G B W1 W2 R B O Y X2 R G B C O Y W Blue 24 VAC HOT FAN 24 VAC Common SOV COOL HEAT 1st STAGE HEATING 2nd STAGE EMERGENCY HEAT Pink Black White X2 O Y With TAM 4 5 7 9 Thermosta...

Страница 14: ...pin open results in the normal mode of operation 2 FRC_DFT Forced Defrost Short TEST_ COMMON to this pin for two 2 seconds to initiate a forced defrost Remove the short after defrost initiates Defrost...

Страница 15: ...Voltage Ground Ground the outdoor unit per national state and local code requirements LIVE ELECTRICAL COMPONENTS During installation testing servicing and troubleshooting of this product it may be ne...

Страница 16: ...s to apply power to the indoor and outdoor units STEP 5 Set system thermostat to ON OFF DONE CANCEL ON OFF STEP 4 Wait one 1 hour before starting the unit if compressor crankcase heater acces sory is...

Страница 17: ...ient tempera ture is above 55 F For best results the indoor temperature should be kept between 70 F to 80 F STEP 1 Use the refrigerant line total length and lift measurements from Section 5 3 Total Li...

Страница 18: ...LINE LENGTH FEET REFRIGERANT LINE LIFT FEET 10 20 25 30 40 60 Add 4 of Subcooling Add 3 of Subcooling Add 2 of Subcooling Add 1 of Subcooling Use Design Subcool Value 60 50 40 30 25 20 15 10 0 SUBCOO...

Страница 19: ...intersection of the Final Subcooling column and the Liquid Temperature row Special subcooling for application with TEM6 AH Table 14 2 8 9 10 11 12 13 14 179 182 185 188 191 195 198 195 198 201 204 208...

Страница 20: ...FIND INTERSECTION OF OD TEMP ID W B 3 READ DISCHARGE OR SUCTION PRESSURE IN LEFT COLUMN 4 EXAMPLE 1 OUTDOOR TEMP 82 F 2 INDOOR WET BULB 67 F 3 AT INTERSECTION ACTUAL 4 DISCHARGE PRESSURE 1450 CFM IS...

Страница 21: ...___ F Liquid Gage Pressure __________ PSIG Suction Gage Pressure __________ PSIG Calculating Charge Using the Weigh In Method STEP 1 Measure in feet the distance between the outdoor unit and the indoo...

Страница 22: ...btained with the namplate charge plus additional charge previously added STEP 5 Return to site for adjustment Important Return in the spring or summer to accurately charge the system in the cooling mo...

Страница 23: ...gainst the following list Final phases of this installation are the unit Operational and Checkout Procedures To obtain proper performance all units must be operated and charge adjustments made Importa...

Страница 24: ...ime Unit Icing Up W H A T T O C H E C K M O D E P O W E R S U P P L Y H I G H V O L T A G E W I R I N G C O M P R E S S O R I O L R U N C A P A C I T O R S T A R T C A P A C I T O R S T A R T R E L A...

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