background image

 18-AC104D1-1E-EN

Section 1. Safety

s

s

WARNING

This information is intended for use by individuals 
possessing adequate backgrounds of electrical and 
mechanical experience. Any attempt to repair a central 
air conditioning product may result in personal injury 
and/or property damage. The manufacture or seller 
cannot be responsible for the interpretation of this 
information, nor can it assume any liability in connec-
tion with its use.

These units use R-410A refrigerant which operates 
at 50 to 70% higher pressures than R-22. Use only 
R-410A approved service equipment. Refrigerant cyl-
inders are painted a “Rose” color to indicate the type 
of refrigerant and may contain a “dip” tube to allow 
for charging of liquid refrigerant into the system. All 
R-410A systems use a POE oil that readily absorbs 
moisture from the atmosphere. To limit this “hygro-
scopic” action, the system should remain sealed 
whenever possible. If a system has been open to the 
atmosphere for more than 4 hours, the compressor oil 
must be replaced. Never break a vacuum with air and 
always change the driers when opening the system 
for 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 Line Service Valve. Turn counterclockwise 
until the valve stem just touches the rolled edge. No 
torque is required. Failure to follow this warning will 
result in abrupt release of system charge and may 
result in personal injury and /or property damage.

UNIT CONTAINS R-410A REFRIGERANT!
R-410A operating pressures exceed the limit of R-22. 
Proper service equipment is required. Failure to use 
proper service tools may result in equipment damage 
or personal injury.

SERVICE

USE ONLY R-410A REFRIGERANT AND AP-

PROVED POE COMPRESSOR OIL.

s

s

WARNING

s

s

WARNING

LIVE ELECTRICAL COMPONENTS!
During installation, testing, servicing, and trouble-
shooting of this product, it may be necessary to work 
with live electrical components. Failure to follow all 
electrical safety precautions when exposed to live 
electrical components could result in death or serious 
injury.

s

s

WARNING

If using existing refrigerant lines make certain that all 
joints are brazed, not soldered.

CAUTION

Scroll compressor dome temperatures may be hot. Do 
not touch the top of compressor; it may cause minor to 
severe burning.

CAUTION

s

s

WARNING

Summary of Contents for 4TWR6

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Reviews: