Installation Instructions
Contents
1. Refrigerant Piping and Filter Drier Evacuate Refrigerant Tubing And Indoor Coil A CAUTION A CAUTION UNIT DAMAGE HAZARD UNIT DAMAGE HAZARD Failure to follow this caution may result in unit damage Failure to follow this caution may result in unit component damage To avoid compressor damage never use the system compressor as a vacuum pump Installation of filter drier in liquid line is required to avoid performance loss due to plugged circuits or plugged expansion devices and to avoid compressor failure Refrigerant tubes and indoor coil should be evacuated using the recommended deep vacuum method of 500 microns The alternate triple evacuation method may be used if the procedure outlined below is followed Connect vapor tubing to fittings on outdoor unit vapor service valves Connect liquid tube to filter drier See Table 1 and Fig 5 Use refrigerant grade tubing Connect other end of filter drier to adapter tube on liquid service valve LIQUID LINE IMPORTANT Never open system under vacuum to atmosphere FILTER DRIER without first breaking it open with nitrogen LIQUID Deep Vacuum Method SERVICE VALVE The deep vacuum method requires a vacuum pump capable of pulling a vacuum of 500 microns and a vacuum gage capable of accurately measuring this vacuum depth The deep vacuum method is the most positive way of assuring a system is free of air and liquid water See Fig 6 Triple Evacuation Metho2. Cooling On a call for cooling thermostat makes circuits R O R Y and R G Circuit R O energizes reversing valve switching it to cooling position Circuit R Y sends low voltage through the safeties and energizes the T1 terminal on the circuit board If the compressor has been off for 5 minutes or power has not been cycled for 5 minutes the OF2 relay and T2 terminal will energize This will close the contactor and start the outdoor fan motor and compressor When the cycle is complete R Y is turned off stopping the compressor and outdoor fan The 5 minute time guard begins counting Compressor will not come on again until this delay expires In the event of a power interruption the time guard will not allow another cycle for 5 minutes NOTE If the indoor blower off delay is enabled it will run up to an additional 90 seconds to increase system efficiency Heating On a call for heating thermostat makes circuits R Y and R G Circuit R Y sends low voltage through the safeties and energizes the T1 terminal on the circuit board T1 energizes the defrost logic circuit If the compressor has been off for 5 minutes or power has not been cycled for 5 minutes the OF2 relay and T2 terminal will energize This will close the contactor start the outdoor fan motor and compressor When the cycle is complete R Y is turned off stopping the compressor and outdoor fan The 5 minute time guard begins counting Compressor will not come on aga
3. 38EYX 50 Hz Split System Heat Pump with Puron Refrigerant 1 1 2 to 5 Tons CE P24 Installation Instructions 048 amp 060 sizes only SAFETY CONSIDERATIONS Improper installation adjustment alteration service maintenance or use can cause explosion fire electrical shock or other conditions which may cause death personal injury or property damage Consult a qualified installer service agency or your distributor or branch for information or assistance The qualified installer or agency must use factory authorized kits or accessories when modifying this product Refer to the individual instructions packaged with the kits or accessories when installing Follow all safety codes Wear safety glasses protective clothing and work gloves Use quenching cloth for brazing operations Have fire extinguisher available Read these instructions thoroughly and follow all warnings or cautions included in literature and attached to the unit Consult local building codes and current editions of the National Electrical Code NEC NFPA 70 In Canada refer to current editions of the Canadian electrical code CSA 22 1 Recognize safety information This is the safety alert symbol A When you see this symbol on the unit and in instructions or manuals be alert to the potential for personal injury Understand these signal words DANGER WARNING and CAUTION These words are used with the safety alert symbol DANGER identifies the most s
4. 7 2 8 3 9 4 10 6 11 7 12 8 13 9 15 0 16 1 7 8 3 9 4 10 6 11 7 12 8 13 9 15 0 16 1 17 2 8 9 4 10 6 11 7 12 8 13 9 15 0 16 1 17 2 18 3 9 10 6 11 7 12 8 13 9 15 0 16 1 17 2 18 3 19 4 10 11 7 12 8 13 9 15 0 16 1 17 2 18 3 19 4 20 6 11 12 8 13 9 15 0 16 1 17 2 18 3 19 4 20 6 21 7 12 13 9 15 0 16 1 17 2 18 3 19 4 20 6 21 7 22 8 13 15 0 16 1 17 2 18 3 19 4 20 6 21 7 22 8 23 9 14 16 1 17 2 18 3 19 4 20 6 21 7 22 8 23 9 25 0 15 16 7 17 8 18 9 20 0 21 1 22 2 23 3 24 4 25 6 16 17 2 18 3 19 4 20 6 21 7 22 8 23 9 25 0 26 1 17 18 3 19 4 20 6 21 7 22 8 23 9 25 0 26 1 27 2 18 19 4 20 6 21 7 22 8 23 9 25 0 26 1 27 2 28 3 19 20 6 21 7 22 8 23 9 25 0 26 1 27 2 28 3 29 4 20 21 7 22 8 23 9 25 0 26 1 27 2 28 3 29 4 30 6 21 22 8 23 9 25 0 26 1 27 2 28 3 29 4 30 6 31 7 22 23 9 25 0 26 1 27 2 28 3 29 4 30 6 31 7 32 8 Heating Check Chart Procedure To check system operation during heating cycle refer to the Heat Pump Pressure chart label on outdoor unit This chart indicates whether a correct relationship exists between system operating pressure and air temperature entering indoor and outdoor units If pressure and temperature do not match on chart system refrigerant charge my not be correct Do not use chart to adjust refrigerant charge NOTE In heating mode check refrigerant charge only when pressures are stable If in doubt remove charge and weigh in correct refrigerant charge NOTE When charging is necessary during heating s
5. CAL HEAT HP THERMOSTAT FAN COIL PUMP 24 VAC HOT 24 VAC COM HEAT STAGE 2 COOL HEAT STAGE 1 FMERGENCY IF AVAILABLE A02325 Fig 9 Generic Wiring Diagram See thermostat Installation Instructions for wiring specific unit combinations Use No 18 AWG color coded insulated 35 C minimum wire If thermostat is located more than 100 ft 30 m from unit as measured along the control voltage wires use No 16 AWG color coded wire to avoid excessive voltage drop All wiring must be NEC Class 1 US or 245 IEC 57 and must be separated from incoming power leads Wire insulation must conform to EN 60335 2 40 Use fan coil transformer or accessory transformer for control power 24v 40va minimum NOTE Use of available 24v accessories may exceed the minimum 40va power requirement Determine total transformer loading and increase the transformer capacity or split the load with an accessory transformer as required 5 Final Wiring Check IMPORTANT IMPORTANT Check factory wiring and field wire connections to ensure terminations are secured properly Check wire routing to ensure wires are not in contact with tubing sheet metal etc Step 11 Compressor Crankcase Heater When equipped with a crankcase heater furnish power to heater a minimum of 24 hr before starting unit To furnish power to heater only set thermostat to OFF and close electrical disconnect to outdoor unit A For tubing sets lengths between 80 an
6. TIONS SIZE DIMENSIONS cm cm A B C 024 57 X 57 9 4 46 36 5 036 060 76X76 16 5 59 7 50 8 A94199 Fig 2 Tie Down Knockouts Step 3 CLEARANCE REQUIREMENTS When installing allow sufficient space for airflow clearance wiring refrigerant piping and service Allow 76 cm clearance to service end of unit and 122 cm above unit For proper airflow a 15 cm clearance on 1 side of unit and 30 5 cm on all remaining sides must be maintained Maintain a distance of 61cm between units Position so water snow or ice from roof or eaves cannot fall directly on unit On rooftop applications locate unit at least 15 cm above roof surface Step 4 OPERATING AMBIENT The minimum outdoor operating ambient in cooling mode without additional accessories is 13 C and the maximum outdoor operating ambient in cooling mode is 52 C The maximum outdoor operating ambient in heating mode is 19 C Step 5 ELEVATE UNIT Elevate unit per local climate and code requirements to provide clearance above estimated snowfall level and ensure adequate drainage of unit A CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result in unit damage Accumulation of water and ice in base pan may cause equipment damage Step 6 CHECK INDOOR EXPANSION DEVICE When combined with a Carrier indoor product a hard shutoff thermostatic expansion valve TXV is required at the indoor section of the system for proper oper
7. alve with Sweat Adapter Tube Table 1 Refrigerant Connections and Recommended Liquid Line and Vapor Tube Diameters in mm TUBE DIAMETER UNIT SIZE CONNECTION DIAMETER TUBE DIAMETER ALTERNATE Liquid Rated Vapor Liquid Rated Vapor Rated Vapor 024 3 8 9 5 5 8 15 9 3 8 9 5 5 8 15 9 3 4 19 1 036 3 8 9 5 3 4 19 1 3 8 9 5 3 4 19 1 5 8 7 8 15 9 22 2 048 3 8 9 5 7 8 22 2 3 8 9 5 7 8 22 2 3 4 19 1 060 3 8 9 5 1 1 8 28 6 3 8 9 5 1 1 8 28 6 7 8 22 2 Units are rated with 25 ft 7 6 m of lineset See Product Data sheet for performance data when using different size and length linesets Notes 1 Do not apply capillary tube indoor coils to these units 2 For Tubing Set lengths between 80 and 200 ft 24 38 and 60 96 m horizontal or 20 ft 6 1 m vertical differential refer to the Residential Piping and Longline Guideline using Puron refrigerant 3 Table 2 Accessory Usage REQUIRED FOR LOW AMBIENT REQUIRED FOR LONG LINE ACCESSORY APPLICATIONS APPLICATIONS BELOW 55 F 13 C OVER 50 FT 15 M Crankcase Heater Yes Yes Evaporator Freeze Thermostat Yes No Compressor Start Assist Capacitor and Relay Yes Yes Puron Low Ambient Pressure Switch Yes No Wind Baffle See Low Ambient Instructions No Support Feet Recommended No Hard Shutoff TXV Yes Yes Liquid Line Solenoid Valve for Heating No See Long Line Application Guideline
8. ation Step 7 CHECK DEFROST THERMOSTAT Check defrost thermostat to ensure it is properly located and securely attached Find the liquid tube with a brass distributor and feeder tubes going into outdoor coil At the end of one of the feeder tubes there is a 9 5 mm OD stub tube approximately 7 6 cm long See Fig 3 The defrost thermostat should be located on stub tube Note that there is only one stub tube used with feeder tube and on most units it is the bottom circuit FEEDER TUBE STUB TUBE ai DEFROST THERMOSTAT A97517 Fig 3 Defrost Thermostat Location Step 8 In Long Line Applications Install Liquid Line Solenoid Valve LSV For refrigerant piping arrangements with equivalent lengths greater than 15 m and or when elevation difference between indoor and outdoor unit is greater than 6 m follow all requirements of the Long Line Guideline section in the Residential Piping and Long Line Guideline for Residential Split System Air Conditioners and Heat Pumps Using Puron Refrigerant or the Service Manual If required by Residential Piping and Long Line Guideline install LSV kit part No KHALSO401LLS specifically designed for Puron Heat Pumps LSV should be installed within 60 cm of the outdoor unit with flow arrow pointing toward outdoor unit as close as possible to filter drier Follow the Installation Instructions included with accessory kit IMPORTANT Flow arrow mu
9. d The triple evacuation method should only be used when vacuum pump is only capable of pumping down to 28 in 71 cm of mercury vacuum and system does not contain any liquid water Refer to Fig 7 and proceed as follows 1 Pump system down to 28 in 71 cm of mercury and allow ADIA pump to continue operating for an additional 15 minutes Fig 5 Filter Drier with Sweat Adapter Tube and Liquid Tube 2 Close service valves and shut off vacuum pump 3 Connect a nitrogen cylinder and regulator to system and open until system pressure is 2 psig 14 KPa Sweat Connection 4 Close service valve and allow system to stand for 1 hr Dur A C AUTI O N ing this time dry nitrogen will be able to diffuse throughout the system absorbing moisture 5 Repeat this procedure as indicated in Fig UNIT DAMAGE HAZARD i R 6 System will then be free of any contaminants and water va Failure to follow this caution may result in unit component por damage Service valves must be wrapped while brazing in a heat 5000 sink material such as a wet cloth 4500 4000 Wrap service valves and filter drier with a wet cloth or heatsinking ae pana material Braze connections using either silver bearing or aadd non silver bearing brazing material Do not use soft solder materials which melt below 800 F 427 C Consult local code gan requirements 2000 VACUUM TIGHT Leak Checking a S Leak test all joints in indoor ou
10. d caps installed replace stem caps after system is opened to refrigerant flow back seated Replace caps finger tight and tighten with wrench an additional 1 12 turn Use a backup wrench on valve body flats to prevent distortion of sheet metal 3 Close electrical disconnects to energize system 4 Set room thermostat at desired temperature Be sure set point is below indoor ambient temperature 5 Set room thermostat to HEAT or COOL and fan control to ON or AUTO mode as desired Operate unit for 15 minutes Check system refrigerant charge A CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result in unit damage 3 phase scroll compressors are rotation sensitive A flashing LED on phase monitor indicates reverse rotation See Fig 10 and Table 3 This will not allow contactor to be energized Disconnect power to unit and interchange 2 field wiring leads on unit contactor CONTACTOR 24VAC COM 7005 oo OFF NO 24VAC ON 0K FLASH PHASE PROBLEM o 00 Fig 10 3 Phase Monitor Control HK SSACO02 A00010 Table 3 Phase Monitor LED Indicators LED STATUS OFF No call for compressor operation FLASHING Reversed phase ON Normal Sequence of Operation NOTE Defrost control board is equipped with 5 minute lockout timer that is initiated upon any interruption of power Turn on power to indoor and outdoor units Transformer is energized
11. d 200 ft 24 and 61 m horizontal or 20 ft 6 m vertical differential refer to the Residential Piping and Long Line Guideline Step 12 Install Electrical Accessories Refer to the individual instructions packaged with kits or accessories when installing CAUTION PERSONAL INJURY AND OR EQUIPMENT DAMAGE HAZARD Failure to follow this caution could result in personal and or equipment damage Do not overcharge system with refrigerant Do not operate unit in a vacuum or at negative pressure Do not disable low pressure switch In scroll compressor applications e Dome temperatures may be hot CAUTION PERSONAL INJURY HAZARD Failure to follow this caution could result in personal injury Always wear safety glasses protective clothing and gloves when handling refrigerant 4 WARNING PERSONAL INJURY and ENVIRONMENTAL HAZARD Failure to relieve system pressure could result in personal injury and or death 1 Relieve pressure and recover all refrigerant before servicing existing equipment and before final unit disposal Use all service ports and open all flow control devices including solenoid valves 2 Federal regulations require that you do not vent refrigerant into the atmosphere Recover during system repair or final unit disposal Follow these steps to properly start up the system 1 Fully back seat open liquid and vapor service valves 2 Unit is shipped with valve stem s front seated closed an
12. eason charge must be weighed in accordance with unit rating plate and adjusted for interconnecting tubes greater than or less than 7 6 m Step 15 Final Checks IMPORTANT Before leaving job be sure to do the following 1 Securely fasten all panels and covers 2 Tighten service valve stem caps to 1 12 turn past finger tight 3 Leave User s Manual with owner Explain system operation and periodic maintenance requirements outlined in manual 4 4 Fill out Dealer Installation Checklist and place in customer file CARE AND MAINTENANCE For continuing high performance and to minimize possible equipment failure periodic maintenance must be performed on this equipment Frequency of maintenance may vary depending upon geographic areas such as coastal applications R 410A REFRIGERANT QUICK REFERENCE GUIDE R 410A refrigerant operates at 50 70 percent higher pressures than R 22 Be sure that servicing equipment and replacement components are designed to operate with R 410A refrigerant R 410A refrigerant cylinders are rose colored Recovery cylinder service pressure rating must be 400 psig DOT 4BA400 or DOT BW400 R 410A refrigerant systems should be charged with liquid refrigerant Use a commercial type metering device in the manifold hose when charging into suction line with compressor operating Manifold sets should be 700 psig high side and 180 psig low side with 550 psig low side retard Use hoses with 700 psig service pressu
13. ends 4 Leave some slack between structure and unit to absorb vi bration 5 When passing refrigerant tubes through the wall seal open ing with RTV or other pliable silicon based caulk See Fig 1 6 Avoid direct tubing contact with water pipes duct work floor joists wall studs floors and walls 7 Do not suspend refrigerant tubing from joists and studs with a rigid wire or strap that comes in direct contact with tubing See Fig 1 8 Ensure that tubing insulation is pliable and completely sur rounds vapor tube 9 When necessary use hanger straps which are 1 in wide and conform to shape of tubing insulation See Fig 1 10 Isolate hanger straps from insulation by using metal sleeves bent to conform to shape of insulation OUTDOOR WALL INDOOR WALL CAULK AN ee LIQUID TUBE X f INSULATION SUCTION TUBE THROUGH THE WALL a OST INSULATION FE SUCTION TUBE HANGER STRAP AROUND SUCTION TUBE ONLY T ber PmNn Le y LIQUID TUBE SUSPENSION S o 0o A07588 Fig 1 Connecting Tubing Installation INSTALLATION Step 1 CHECK EQUIPMENT AND JOB SITE Inspect New Unit File claim with shipping company prior to installation if shipment is damaged or incomplete Locate unit rating plate on unit service panel It contains information needed to properly install unit Check rating plate to be sure unit matches job specifications Location Chec
14. erious hazards which will result in severe personal injury or death WARNING signifies hazards which could result in personal injury or death CAUTION is used to identify unsafe practices which would result in minor personal injury or product and property damage NOTE is used to highlight suggestions which will result in enhanced installation reliability or operation A WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death Before installing modifying or servicing system main electrical disconnect switch must be in the OFF position There may be more than 1 disconnect switch Lock out and tag switch with a suitable warning label 4 WARNING UNIT OPERATION AND SAFETY HAZARD Failure to follow this warning could result in personal injury or equipment damage R 410A refrigerant systems operate at higher pressures than standard R 22 systems Do not use R 22 service equipment or components on R 410A refrigerant equipment Turn to the Experts INSTALLATION RECOMMENDATIONS NOTE In some cases noise in the living area has been traced to gas pulsations from improper installation of equipment 1 Locate unit away from windows patios decks and so forth where unit operation sound may disturb customer 2 Insure that vapor and liquid tube diameters are appropriate to capacity of unit 3 Run refrigerant tubes as directly as possible by avoiding un necessary turns and b
15. f correct size and condition For tubing requirements beyond 15 m substantial capacity and performance losses can occur Following the recommendations in the Residential Piping and Long Line Application Guideline and Service Manual for Residential Split System Air Conditioners and Heat Pumps using Puron Refrigerant to minimize losses Refer to Table 1 for field tubing diameters Refer to Table 2 for accessory requirements Refrigerant tubes and indoor coil must be evacuated to 500 microns to minimize contamination and moisture in the system Outdoor Unit Connected To Factory Approved Indoor Unit These outdoor units are carefully evaluated and listed with specific indoor coils for proper system performance IMPORTANT Do not apply indoor coils which are not factory approved to these units INSTALL ADAPTER TUBE 1 Remove plastic retainer holding outdoor piston in liquid service valve 2 Check outdoor piston size with matching number listed on unit rating plate 3 Locate plastic bag taped to unit containing adapter tube 4 Remove Teflon washer from bag and install on open end of liquid service valve See Fig 4 5 Remove adapter tube from bag and connect threaded nut to liquid service valve Tighten nut finger tight and then with wrench an additional 1 12 turn 15 ft 1b 20 n m DO NOT OVERTIGHTEN SWEAT FLARE Pa ADAPTER TEFLON SEAL PISTON ae PISTON BODY LIQUID SERVICE VALVE A01214 Fig 4 Liquid Service V
16. in until this time delay expires In the event of a power interruption the time guard will not allow another cycle for 5 minutes Defrost The defrost control is a time temperature control which includes a field selectable quick connects located at board edge time period between defrost cycles 30 60 or 90 minutes factory set at 60 minutes Defrost mode is identical to cooling mode except that outdoor fan motor stops and second stage heat is turned on to continue warming conditioned space First the defrost cycle timer starts when the contactor is energized and a 24 volt signal is present on the T1 terminal Then the defrost cycle begins when the cycle times out 30 60 90 min and the defrost thermostat is closed To initiate defrost the defrost thermostat must be closed This can be accomplished as follows 1 Turn off power to outdoor unit 2 Disconnect outdoor fan motor lead from OF2 on control board Tape lead to prevent grounding 3 Restart unit in heating mode allowing frost to accumulate on outdoor coil 4 After a few minutes in heating mode liquid line temperat ure should drop below closing point of defrost thermostat approximately 30 F 1 11 C 5 Short between speed up terminals with a flat bladed screw driver See Fig 11 This reduces the timing se quence to 1 25th of original time See Table 4 6 When you hear reversing valve change position remove screwdriver immediately otherwise control wil
17. k local codes for regulations concerning zoning noise platforms and other issues Locate unit away from fresh air intakes vents or bedroom windows Noise may carry into the openings and disturb people inside Locate unit in a well drained area or support unit high enough so that water runoff will not enter the unit Locate unit away from areas where heat lint or exhaust fumes will be discharged onto unit as from dryer vents Locate unit away from recessed or confined areas where recirculation of discharge air may occur refer to CLEARANCES section of this document Roof top installation is acceptable providing the roof will support the unit and provisions are made for water drainage and noise vibration dampening NOTE Roof mounted units exposed to wind may require wind baffles Consult the manufacturer for additional information Step 2 INSTALL ON SOLID LEVEL MOUNTING PAD If conditions or local codes require the unit be attached to pad tie down bolts should be used and fastened through knockouts provided in unit base pan Refer to unit mounting pattern in Fig 2 to determine base pan size and knockout hole location Arrange supporting members to adequately support unit and minimize transmission of vibration to building Consult local codes governing rooftop applications o 3 D 9 53 TIEDOWN KNOCKOUTS 2 PLACES MINIMUM TIEDOWN KNOCKOUT UNIT MOUNTING PAD LOCA
18. l terminate normal 10 minute defrost cycle in approximately 2 seconds NOTE Length of defrost cycle is dependent on the length of time it takes to remove screwdriver from test pins after reversing valve has shifted 7 Unit will remain in defrost for remainder of defrost cycle time or until defrost thermostat reopens at approximately 80 F coil temperature of liquid line 8 Turn off power to outdoor unit and reconnect fan motor lead to OF2 on control board Table 4 Defrost Control Speed Up Timing Sequence MINIMUM MAXIMUM SPEED UP PARAMETER MINUTES MINUTES NOMINAL 30 minute cycle 27 33 7 sec 60 minute cycle 56 66 14 sec 90 minute cycle 81 99 21 sec 10 minute cycle 9 11 2 sec CEBD430524 01A 5501A gt QO lt W N isp x I A02001 Rev B Fig 11 Defrost Control Step 14 Check Charge Unit Charge Factory charge is shown on unit rating plate To check charge in cooling mode refer to Cooling Only Procedure To check charge in heating mode refer to Heating Check Chart Procedure Cooling Only Procedure NOTE If superheat or subcooling charging conditions are not favorable charge must be weighed in accordance with unit rating plate 0 6 oz ft of 3 8 in 56g m of 9 5 mm liquid line above or below 15 ft 7 6 m respectively EXAMPLE To calculate additional charge required for a 10 m line set 10 m 7 6 m 2 4 m X 56 g m 134 4 g of additional charge The follo
19. nstall branch circuit disconnect of adequate size per NEC to handle unit starting current Locate disconnect within sight from and readily accessible from unit per Section 440 14 of NEC or local code Route Ground and Power Wires Remove access panel to gain access to unit wiring Install conduit to knockout hole in bottom of control box Extend power and ground leads into control box and connect to unit contactor and ground lug as shown on unit wiring diagram and Fig 8 Consult IEC 60335 1 Part 25 for additional information DISCONNECT PER IEC AND OR LOCAL CODES ee Roa heo 1 FIELD POWER WIRING CONTACTOR ER L1 gt Lon N FOR 1 PHASE ONLY Tie 3 PHASE ONLY L3 L3 C GND 18 i SFL ra eae goes See See 4 fo GROUND LUG A03226 Fig 8 Line Power Connections 4 WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death The unit cabinet must have an uninterrupted or unbroken ground The ground may consist of electrical wire or metal conduit when installed in accordance with existing electrical codes Connect Control Wiring Remove grommet from control wiring hole in control box Install conduit to knockout hole in control box Extend control wiring leads into control box and connect to terminal board as shown on unit wiring diagram and Fig 9 Consult IEC 60335 1 Part 25 for additional information TYPI
20. re rating Leak detectors should be designed to detect HFC refrigerant R 410A refrigerant as with other HFCs is only compatible with POE oils Vacuum pumps will not remove moisture from oil Do not use liquid line filter driers with rated working pressures less than 600 psig Do not leave R 410A refrigerant suction line filter driers in line longer than 72 hours Do not install a suction line filter drier in liquid line POE oils absorb moisture rapidly Do not expose oil to atmosphere POE oils may cause damage to certain plastics and roofing materials Wrap all filter driers and service valves with wet cloth when brazing A factory approved liquid line filter drier is required on every unit Do NOT use an R 22 TXV If indoor unit is equipped with an R 22 TXV it must be changed to a hard shutoff R 410A refrigerant TXV Never open system to atmosphere while it is under a vacuum When system must be opened for service recover refrigerant evacuate then break vacuum with dry nitrogen and replace filter driers Evacuate to 500 microns prior to recharging Do not vent R 410A refrigerant into the atmosphere Do not use capillary tube coils Observe all warnings cautions and bold text All indoor coils must be installed with a hard shutoff R 410A refrigerant TXV metering device Copyright 2009 Carrier Corp e 7310 W Morris St e Indianapolis IN 46231 Printed in Mexico Edition Date 07 09 Catalog No 38CEYX C2SI Manufacturer
21. reserves the right to change at any time specifications and designs without notice and without obligations Replaces 38EYX C1SI 10
22. s on chart reached Table 5 Superheat Charging Table SI OUTDOOR EVAPORATOR ENTERING AIR TEMPERATURE C WB TEMP C 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 13 5 0 6 7 7 8 9 4 11 1 11 9 12 8 14 4 16 1 17 8 19 4 20 6 22 2 23 3 25 0 16 3 9 5 6 6 7 8 3 10 0 10 8 11 7 13 3 15 0 16 7 18 3 20 0 21 1 22 2 23 9 18 3 3 5 6 7 2 8 9 9 7 10 6 11 7 13 3 15 0 16 7 18 3 20 0 21 1 22 8 21 3 9 5 6 7 2 8 1 8 9 10 6 TAC 13 3 15 0 16 7 18 3 20 0 21 7 24 3 3 3 5 0 5 8 6 7 8 3 10 0 11 7 7 8 15 6 17 2 18 9 20 6 27 2 8 3 6 4 4 6 7 8 3 10 0 11 7 13 9 15 6 17 2 19 4 29 4 4 6 1 8 3 10 6 12 2 14 4 16 7 18 3 32 2 8 5 0 7 2 8 9 11 1 13 3 15 0 17 2 35 z 3 3 5 6 7 8 10 0 12 2 13 9 16 1 38 4 4 6 7 8 3 11 1 12 8 15 0 41 2 8 5 0 7 2 9 4 12 2 14 4 43 a JE 3 3 6 1 8 3 11 1 13 9 46 4 4 7 8 10 0 12 8 Where a dash appears do not attempt to charge system under these conditions or refrigerant slugging may occur Charge must be weighed in NOTE Superheat C is at low side service port Table 6 Required Suction Line Temperature C SUPERHEAT TEMP SUCTION PRESSURE AT SERVICE PORT KPa CC 743 774 805 836 869 902 957 971 1005 0 1 7 2 8 3 9 5 0 6 1 7 2 8 3 9 4 10 6 1 2 8 3 9 5 0 6 1 7 2 8 3 9 4 10 6 11 7 2 3 9 5 0 6 1 7 2 8 3 9 4 10 6 11 7 12 8 3 5 0 6 1 7 2 8 3 9 4 10 6 11 7 12 8 13 9 4 6 1 7 2 8 3 9 4 10 6 11 7 12 8 13 9 15 0 6
23. st point toward outdoor unit Step 9 MAKING PIPING CONNECTIONS 4 WARNING PERSONAL INJURY and ENVIRONMENTAL HAZARD Failure to relieve system pressure could result in personal injury and or death 1 Relieve pressure and recover all refrigerant before servicing existing equipment and before final unit disposal Use all service ports and open all flow control devices including solenoid valves 2 Federal regulations require that you do not vent refrigerant into the atmosphere Recover during system repair or final unit disposal A CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result in unit damage Do not leave system open to atmosphere any longer than minimum required for installation POE oil in compressor is extremely susceptible to moisture absorption Always keep ends of tubing sealed during installation A CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result in unit damage If ANY refrigerant tubing is buried provide a 15 cm vertical rise at service valve Refrigerant tubing lengths up to 91 cm may be buried Do NOT bury tubing lengths over 91 cm A CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result in unit component damage Service valves must be wrapped while brazing in a heat sink material such as a wet cloth Outdoor units may be connected to indoor section using accessory tubing package or field supplied refrigerant grade tubing o
24. tdoor and refrigerant tubing So TIGHT DRY SYSTEM MINUTES A95424 Fig 6 Deep Vacuum Graph v BREAK VACUUM WITH DRY NITROGEN v vy v BREAK VACUUM WITH DRY NITROGEN v v v CHECK FOR TIGHT DRY SYSTEM IF IT HOLDS DEEP VACUUM AA CHARGE SYSTEM Fig 7 Triple Evacuation Method A95425 Final Tubing Check IMPORTANT Check to be certain factory tubing on both indoor and outdoor unit has not shifted during shipment Ensure tubes are not rubbing against each other or any sheet metal Pay close attention to feeder tubes making sure wire ties on feeder tubes are secure and tight Step 10 Make Electrical Connections 4 WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death Do not supply power to unit with compressor terminal box cover removed Be sure field wiring complies with local and national fire safety and electrical codes and voltage to system is within limits shown on unit rating plate Contact local power company to correct improper voltage See unit rating plate for recommended circuit protection device NOTE Operation of unit on improper line voltage constitutes abuse and could affect unit reliability See unit rating plate Do not install unit in system where voltage or phase imbalance 3 phase may fluctuate above or below permissible limits NOTE Use copper wire only between disconnect switch and unit NOTE I
25. wing procedure is valid when indoor airflow is within 21 percent of its rated CFM 1 Operate unit a minimum of 10 minutes before checking charge 2 Measure suction pressure by attaching an accurate gage to suction valve service port 3 Measure suction temperature by attaching an accurate ther mistor type or electronic thermometer to suction line near service valve 4 Measure outdoor air dry bulb temperature with thermomet er 5 Measure indoor air entering indoor coil wet bulb temperat ure with a sling psychrometer 6 Refer to Table 5 Find outdoor temperature and evaporator entering air wb bulb temperature At this intersection note superheat 7 Refer to Table 6 Find superheat temperature located in item 6 and suction pressure At this intersection note suction line temperature 8 If a unit has a higher suction line temperature than charted temperature add refrigerant until charted temperature is reached 9 If unit has a lower suction line temperature than charted 10 When adding refrigerant charge in liquid form into suction service port using a flow restricting device 11 If outdoor air temperature or pressure at suction valve changes charge to new suction line temperature indicated temperature reclaim refrigerant until charted temperature i
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