CARRIER Air Conditioner/heat Pump(outside Unit) Manual L1002550
User Manual: CARRIER CARRIER Air conditioner/heat pump(outside unit) Manual CARRIER Air conditioner/heat pump(outside unit) Owner's Manual, CARRIER Air conditioner/heat pump(outside unit) installation guides
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to the expe_ Installation Instructions NOTE: Read installation. the entire manual before starting the INSTALLATION NOTE: SAFETY Improper instruction installation, CONSIDERATIONS adjustment, alteration, In some gas pulsations service, 2. Ensure distributor or branch for information or assistance. The qualified installer or agency must use factory-authorized kits or accessories 3. Run when modifying this product. Refer to the individual packaged with the kits or accessories when installing. 4. Leave 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. When safety you manuals, see information. this This is the safety-alert symbol on be alert to the potential Understand these signal the unit DANGER, away from sound that vapor windows, may disturb and liquid area has been traced to of equipment. patios, decks, etc. where customer. tube diameters are appropriate for unit capacity. refrigerant unnecessary tubes as directly as possible by avoiding turns and bends. some slack between structure and unit to absorb symbol/k or injury. WARNING, 5. When passing refrigerant tubes through the wall, seal opening with RTV or other pliable silicon-based caulk. (See Fig. 1.) 6. Avoid direct tubing contact with water floor joists, wall studs, floors, and walls. 7. Do not suspend a rigid wire tubing.(See and in instructions for personal words; installation vibration. Follow all safety codes. Wear safety glasses, protective clothing, and work gloves. Use quenching cloth for brazing operations. Recognize unit unit operation 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 instructions in the living from improper 1. Locate maintenance, RECOMMENDATIONS cases noise and CAUTION. These words are used with the safety-alert symbol. DANGER identifies the most serious 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 may result in minor personal refrigerant or strap tubing which from joists comes duct work, and studs with in direct contact with Fig. 1.) 8. Ensure that tubing insulation surrounds vapor tube. 9. When necessary, conform pipes, is pliable use hanger straps which to shape of tubing insulation. and completely are 1 in. wide and (See Fig. 1.) 10. Isolate hanger straps from insulation by using metal sleeves bent to conform to shape of insulation. injury or product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation. ELECTRICALSHOCK Failure to follow or death. HAZARD this warning could result in personal injury 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. MiN "-- LIQUID TUBE SUSPENSION A07588 Fig. 1 - Connecting CUT HAZARD Failure to follow this caution may result in personal injury. Sheet metal parts may have sharp edges or burrs, Use care and wear appropriate protective clothing and gloves when handling parts, Tubing Installation When outdoor unit is connected to factory-approved indoor outdoor unit contains system refrigerant charge for operation AHRI rated field-supplied indoor unit when connected by 15 ft. (4.57 m) of or factory accessory tubing. For proper unit operation, check located on control this instruction. IMPORTANT: residential unit, with refrigerant charge using charging information box cover and/or in the Check Charge section of Maximum applications liquid-line including size is 3/8-in. line line. OD for all IMPORTANT: Alwaysinstallthe filter drier. Obtain replacement branch. factory-supplied filter driers liquid-line from your distributor Operating or INSTALLATION Check Equipment Unpack and Job Site Unit Move to final location. Remove carton taking care not to damage unit. Inspect Equipment File claim with shipping company prior to installation if shipment is damaged or incomplete. Locate unit rating plate on unit corner panel. It contains information needed to properly install unit. Check rating plate to be sure unit matches job specifications. Install on a Solid, If conditions down bolts provided in to deternfine Level Mounting Ambient The minimum outdoor operating ambient in cooling mode without accessory is 55°F (12.78°C), and the n:axinmm outdoor operating ambient in cooling mode is 125°F (51.67°C). The maximum outdoor operating ambient in heating mode is 66 °F (18.89°C). Check Defrost Thermostat Check defrost thermostat to ensure it is properly located and securely attached. There is a liquid header with a brass distributor and feeder tube going into outdoor coil. At the end of the one of the feeder tubes, there is a 3/8 in. O.D. stub tube approximately 2 in. long. (See Fig. 3.) The defrost thermostat should be located on stub tube. Note that there is only one stub tube used with liquid header, and on most units it is the bottom circuit. FEEDER Pad TUBE STUB TUBE or local codes require the unit be attached to pad, tie should be used and fastened through knockouts unit base pan. Refer to unit mounting pattern in Fig. 2 base pan size and knockout hole location. For hurricane tie downs, contact distributor for details and PE Certification (Professional Engineer), if required. On rooftop applications, mount on level platforn: or frame. Place unit above a load-bearing wall and isolate unit and tubing set from structure. Arrange supporting members to adequately support unit and nfininfize transnfission of vibration to building. Consult local codes governing rooftop applications. Roof mounted units exposed to winds above 5 mph (8.05 kin/h) may require wind baffles. Consult the Service Manual Residential Split System Air Conditioners and Heat Pumps for wind baffle construction. NOTE: Unit must be level to within compressor manufacturer specifications. Clearance A97517 Fig. 3 - Defrost Make Piping Thermostat Location Connections -2 ° (---3/8 in./ft) per Requirements When installing, allow sufficient space for airflow clearance, wiring, refrigerant piping, and service. Allow 24 in. (609.6 ram) clearance to service end of unit and 48 in. (1219.2 ram) (above unit. For proper airflow, a 6-in. (152.4 ram) clearance on 1 side of unit and 12-in. (304.8 ram) on all remaining sides must be maintained. Maintain a distance of 24 in. (609.6 ram) between units. Position so water, snow, or ice from roof or eaves cannot fall directly on unit. On rooftop applications, above roof surface. DEFROST D THERMOSTAT PERSONAL INJURY AND ENVIRONMENTAL HAZARD Failure to follow this warning could result in personal injury or death. Relieve pressure and recover all refrigerant before system repair or final unit disposal. Use all service ports and open all flow-control including solenoid valves. devices, locate unit at least 6 in. (152.4 ram) UNIT 3/8-in. (9.53 mm) Dia. Tiedown Knockouts in Basepan(2) Places DAMAGE HAZARD Failure to follow this caution may result in equipment damage or improper operation. If ANY refrigerant tubing is buried, provide a 6-in (152.4 ram). vertical rise at service valve. Refrigerant tubing lengths up to 36-in (914.4 ram). may be buried without further special consideration. Do not bury lines longer than 36 in (914.4 ram). Outdoor l View From Top UNIT BASE Dimension PAN in. (mm) 26 X 26 (660 X 660) 31-1/2 X 31-1/2 (800x 800) 35 X 35 (889x 889) TIEDOWN A 9-1/8 KNOCKOUT LOCATIONS B (231.8) 4-7/16 (112.7) in. (mm) C 21-1/4 9-1/8 (231.8) 6-9/16 (166.7) 24-11/16 9-1/8 (231.8) 6-9/16 (166.7) 28-7/16 (539.8) (627.1) (722.3) A05177 Fig. 2 - Tiedown Knockout Locations units may be connected to indoor section using accessory tubing package or field-supplied refrigerant grade tubing of correct size and condition, For tubing requirements beyond 80 ft, substantial capacity and performance losses can occur. Following the recommendations in the Residential Piping and Long Line Guideline will reduce these losses. Refer to Table 1 for accessory requirements. There nlm) Refer to Table 2 for field tubing are no buried-line applications greater diameters. than 36 in. (914.4 If refrigerant tubes or indoor coil are exposed to atmosphere, must be evacuated to 500 nficrons to elinfinate contanfination moisture in the system. they and Table REQUIRED Accessory Accumulator Start Assist Capacitor Relay Crankcase Liquid Heater Relay Line Solenoid Standard No No Yes Yes No Yes Yes No Yes Yes No Yes No Yes No No Valve See Long- Line Application Guideline No or Yes Support Feet Recommended Outdoor Unit Connected To Factory Approved Unit Indoor Outdoor unit contains correct system refrigerant charge for operation with approved ARI rated indoor unit when connected by 15 ft (4.57 m) of field-supplied or factory-accessory tubing, and factory supplied filter drier. Check refrigerant charge for maximum efficiency. Tubing No No No No Recommended For tubing line sets between 80 and 200 ft. 24.38 and 60.96 m) and/or 20 ft. (6.09 m) vertical differential, Additional requirement for Low-Ambient Controller (full modulation feature) MotorMaster ® Control. Refrigerant FOR SEA COAST APPLICATIONS (Within 2 miles / 3.22 km) Standard Yes]- Yes Motor Master@ Control Low Ambient Switch REQUIRED REQUIRED FOR LONG LINE APPLICATIONS* and Evaporator Freeze Thermostat Hard Shutoff TXV Isolation Usage COOLING APPLICATIONS (Below 55°F / 12.8°C) Standard Ball Bearing Fan Motor Compressor 1 - Accessom FOR LOW-AMBIENT Table UNIT SIZE 018, Connect vapor tube to fitting on outdoor unit vapor service valves (see Table 2). Connect liquid tubing to adapter tube on liquid service valve, Use refrigerant grade tubing. Piping and Longline Guideline. Connections and Recommended Liquid and Vapor 1hbe Diameters (In.) LIQUID RATED VAPOR* Connection Tube Connection Tube Diameter Diameter Diameter Diameter iamet 3/8 3/8 3/8 3/8 024 030, 036 042, 048 060, and Sweat Connections 2 - Refrigerant refer to Residential 061 3/8 3/8 3/8 3/8 5/8 3/4 7/8 7/8 5/8 3/4 7/8 1 - 1/8 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 20 ft. (6.1 m) vertical differential, refer to the Residential Piping and Longline Guideline using Puron refrigerant. or Install Liquid Line Filter Drier Indoor UNIT Failure damage DAMAGE Refer to Fig. 5 and install filter drier as follows: HAZARD to follow or improper this caution operation. Service valves nmst be wrapped such as a wet cloth while brazing. may result in equipment 1. Braze 5 in. (127 ram) liquid tube to the indoor coil. 2. Wrap filter drier with damp cloth. in a heat-sinking material 3. Braze filter step 1. 4. Connect drier to 5 in. (127 ram) long and braze liquid refrigerant liquid tube from tube to the filter drier. Remove plastic retainer holding outdoor piston in liquid service valve, leaving the piston and piston retainer inside the valve. Connect Connect sweat/flare refrigerant adapter provided, to valve. (See Fig. 4.) tubing to fittings on outdoor unit vapor and liquid service valves. Service valves are closed from factory and ready for brazing. After wrapping service valve with a wet cloth, tubing set can be brazed to service valve using either silver bearing or non-silver bearing brazing material. Do not use soft solder (materials which melt below 800°F/427°C). Consult local code requirements. Refrigerant tubing and indoor coil are now ready for leak testing. This check should include all field and factory joints. A05227 Fig. 5 - Liquid -- TEFLON ® SEAL []NIT L L PISTON SWEAT/FLARE ADAPTER LIQUID SERVICE VALVE A05226 Fig. 4 - Liquid Service Valve Filter Drier HAZARD Failure to follow this caution or improper operation. Installation PISTON BODY -- DAMAGE Line may result in equipment of filter drier in liquid line is required. damage Evacuate Refrigerant NOTE: Install 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. Tubing and Indoor Coil Route []NIT DAMAGE HAZARD Failure to follow this caution damage or improper operation. Connect Refrigerant tubes and indoor coil should be evacuated using the recommended deep vacuum method of 500 nficrons. The alternate triple evacuation method may be used (see triple evacuation procedure in service manual). Always break a vacuum with dry nitrogen. Deep Vacuum Method The deep vacuum method requires a vacuum pump capable of pulling a vacuum of 500 nficrons 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. A tight dry system will hold a vacuum of 1000 after approximately 7 nfinutes. and Power Wires Remove access panel to gain access to unit wiring. Extend wires from disconnect through power wiring hole provided and into unit control box. may result in equipment Never use the system compressor as a vacuum pump. nficrons Ground See Fig. 6. Ground and Power Wires Connect ground wire to ground connection in control box for safety. Connect power wiring to contactor as shown in Fig. 7. ELECTRICAL SHOCK Failure death. this warning to follow HAZARD could result in personal iniury or The unit cabinet must have an uninterrupted or unbroken ground to nfininfize personal iniury if an electrical fault should occur. The ground may consist of electrical wire or metal conduit when installed in accordance with existing electrical codes. 5000 Connect 4500 safety. ground Connect 4000 to ground connection to contactor in control as shown box for in Fig. 7. DISCONNECTD PER N.E.O AND/ORD LOCAL CODES LEAK IN SYSTEM 3500 wire power wiring CONTACTOR 3000 2500 FIELD 2000 POWER WIRING 1500 3 PHASE i uO WET BLUE ONLY FIELD GROUND 1000 TIGHT DRY SYSTEM 500 WIRING _ GROUND_ LUG A94025 2 3 4 MINUTES 5 Fig. 7 - Line Connections 6 Connect Control Wiring A95424 Fig. 6 - Deep Vacuum Route Graph connect Final Tubing Check IMPORTANT: and outdoor not rubbing attention secure Check against each during other or tubes, makings tubing on both indoor shipment. any sheet Ensure metal. tubes are Pay close sure wire ties on feeder tubes are and tight. Be sure field wiring complies with local and national fire, safety, and electrical codes, and voltage to system is within linfits shown on unit rating plate. Contact local power company for correction of improper voltage. See unit rating plate for recommended circuit protection device. NOTE: Operation abuse control leads Instructions to be certain factory unit has not shifted to feeder 24v of unit on improper and could affect unit reliability. install unit in system pernfissible linfits. where voltage Make Electrical Connections line voltage constitutes See unit rating plate. Do may fluctuate above not or below Failure death. for wiring power Use copper wire only between control wiring See Thermostat wiring. specific unit combinations. insulated (35°C grommet and Installation (See Fig. 8.) minimun9 wire. If All wiring must be NEC inconfing power leads. Class 1 and must be separated Use furnace transformer, fan coil transformer, transformer for control power, 24v/40va minimum. NOTE: nfininmm loading Use 40va and increase an accessory Final of available 24v power requirement. Wiring accessories Deternfine the transformer transformer capacity or may total from accessory exceed the transformer or split the load with as required. Check Check factory wiring and field wire connections to ensure ternfinations are secured properly. Check wire routing ensure wires are not in contact with tubing, sheet metal, etc. could result in personal to unit with through thermostat is located more than 100 ft (30.5 m) from unit, as measured along the control voltage wires, use No. 16 AWG color-coded wire to avoid excessive voltage drop. IMPORTANT: HAZARD to follow this warning Do not supply cover removed. NOTE: SHOCK wires control Use No. 18 AWG color-coded, Compressor ELECTRICAL to compressor disconnect iniury ternfinal or box switch and unit. Crankcase to 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 outdoor unit. A crankcase heater to OFF is required and close if refrigerant electrical tubing disconnect is longer to than 80 ft. (24.4 m), or when outdoor unit is 20 ft. (6.1 m) below the indoor unit. Refer to the Residential Piping and Long Line Guideline, Install Electrical Accessories Refer to the individual instructions accessorieswhen installing. packaged with kits HEAT PUMP TYPICAL FAN COIL HPTHERMOSTAT or 24 VAC HOT Start-Up i---_3,--[_ 24 VAC COM HEAT STAGE PERSONAL Failure injury. INJURY to follow HAZARD this caution may result in personal INDOOR Wear safety glasses, protective clothing, and handling refrigerant and observe the following: • Front seating service -€?-tB E_ COOL/HEAT STAGE 1 valves are equipped gloves with Schrader when FAN RVS COOLINC valves. EMERGENCY HEAT E_ * IF AVAILABLE LEGEND 24-VFACTORYWIRING ENVIRONMENTAL Failure to follow damage. 24-V FIELD WIRING HAZARD this caution may result !_i_ q_T ?_ -_-' \ 2) ,fm tEm_ in environmental Federal regulations require that you do not vent refrigerant to the atmosphere. Recover during system repair or final unit disposal. _' FIELD SPLICE CONNECTION OUTDOOR THERMOSTAT EMERGENCY HEAT RELAY SUPPLEMENTAL HEAT RELAY A02325 / A97413 Fig. 8 - Generic (See Thermostat UNIT OPERATION AND SAFETY Failure to follow this caution equipment damage or improper • Do not overcharge HAZARD may result operation. unit in a vacuum Sequence • Do not disable low pressure NOTE: or at negative switch pressure. dome temperatures of Operation Defrost control timer that is initiated in scroll compressor Turn on energized. applications. • Compressor power 1. After system is evacuated, service valves. system: start up fully open liquid and vapor 2. []nit is shipped with valve stem(s) front seated (closed) and 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. 3. Close electrical disconnects 4. Set room thermostat point is below indoor 5. Set room ON thermostat to energize system. at desired temperature. ambient temperature. to HEAT or AUTO mode, nfinutes. Check system as or COOL desired. refrigerant is equipped with 5 nfinute any interruption to indoor and lockout of power. outdoor units. Transformer is Cooling may be hot. steps to properly these board upon On a call for cooling, Follow Instructions unit combinations) injury, system with refrigerant. • Do not operate Diagrams Installation for specific in personal Wiring and fan control Operate charge. Be sure unit for set to 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 cycled for 5 minutes, the OF2 relay and T2 temfinal This will close the contactor, and start the outdoor has not been will energize. 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, not allow another cycle for 5 nfinutes. the time guard will 15 NOTE: If the indoor blower an additional 90 seconds off delay is enabled, to increase system it will run up to 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 TI ternfinal on the circuit board. TI energizes the defrost logic circuit. If the compressor has been off for 5 nfinutes, or power has not been cycled for 5 nfinutes, the OF2 relay and T2 ternfinal will energize. This will motor and compressor. close the contactor, When the cycle is complete, R-Y is turned compressor and outdoor fan. The 5 minute start the outdoor off, time fan stopping the guard begins counting. Compressor will not come on again until this time delay expires. In the event of a power interruption, the time guard will not allow another cycle for 5 nfinutes. QuietShift Check Quiet shift is a field selectable defrost mode (factory set to OFF), which will eliminate occasional noise that could be heard at the start of defrost by placing position. When cycle and restarting DIP switch of heating 3 on defrost Quiet Shift switch is placed initiated, the following sequence valve will energize, compressor board cycle. It is selected (see Fig. 9) in the ON in ON position, and a defrost is of operation will occur. Reversing will turn off for 30 seconds, and then turn back on to complete defrost. At the start of heating after conclusion of defrost, reversing valve will de-energize, compressor will turn off for another 30 seconds, and the fan will turn off for 40 seconds, before starting in the heating mode. Defrost The defrost control is a time/temperature control which selectable settings of 30, 60, 90, or 120 minutes, factory has field set to 90 nfinutes. These settings represent the amount of time that nmst pass after closure of the defrost thermostat before the defrost sequence begins. The defrost heating thermostat cycle. senses When coil the coil temperature temperature thermostat setting of approximately which energizes the DFT ternfinal throughout reaches the the defrost 32 °F (0 °C), it will close, and begins the defrost tinting Charge Factory charge amount and desired subcooling are shown on unit rating plate. Charging method is shown on information plate inside unit. To properly check or adjust charge, conditions must be favorable for subcooling charging. when the outdoor temperature is (21.11°C and 37.78°C), 70°F and 80°F below: Favorable conditions exist between 70°F and 100°F and the indoor (21.11°C temperature and 26.67°C). Follow is between the procedure Unit is factory charged for 15ft (4.57 m) of lineset. Adjust charge by adding or removing 0.6 oz/fl (.018 kg/m) of 3/8 liquid line above or below 15fl (4.57 m) respectively. For standard refrigerant line lengths (80 fl/24.38 m or less), allow system to operate in cooling mode at least 15 minutes. If conditions are favorable, check system charge by subcooling method. If any adjustment is necessary, operate for 15 nfinutes charged adjust charge slowly and allow system to to stabilize before declaring a properly system. If the indoor temperature is above 80°F (26.67°C), and the outdoor temperature is in the favorable range, adjust system charge by weight based on line length and allow the indoor temperature to drop to 80°F by subcooling (26.67°C) before attempting method as described above. to check system charge sequence. When the DFT has been energized for the selected time, the defrost cycle begins. Defrost cycle is ternfinated when defrost If the indoor temperature is below temperature is not in the favorable thermostat opens, length above or below 15ft (4.57 m) only. Charge level should then be appropriate for the system to achieve rated capacity. The charge level could then be checked at another time when the both indoor Defrost or automatically after 10 nfinutes. Speedup To initiate a forced defrost, speedup pins (J1) nmst be shorted with a fiat head screwdriver for 5 seconds and RELEASED. If the defrost thermostat is open, a short defrost cycle will be observed (actual length depends on Quiet Shift switch position). When Quiet Shift is off, only a short 30 second defrost cycle is observed. With Quiet Shift ON, the speedup sequence is one nfinute; 30 second compressor off period followed by 30 seconds of defrost with compressor operation. When returning compressor will turn off for an additional for 40 seconds. If the defrost thermostat is closed, to heating 30 seconds a complete mode, the and the fan defrost cycle is initiated. If the Quiet Shift switch is turned on, the compressor will be turned off for two 30 second intervals as explained previously. and outdoor NOTE: fl (6.10 special charging check system t Before leaving that all wiring metal edges to prevent 2. Ensure _-_1_1 t Pins I _ adding covers. Defrosl Shift DIP switches 3 - Defrost Control Control Speedup-Timing that all wiring panels service 5. Fill out Dealer file. interval cycle, refer Sequence to the job, be sure to do the following: is routed valve away from tubing and sheet rub-through or wire pinching. and tubing is secure and covers. Securely stem caps Installation CARE A05378 Fig. 9 - Defrost heating fasten in unit before all panels to 1/12-turn Checklist and place and past finger 4. Leave Owner's Manual with owner. Explain operation and periodic maintenance requirements in manual. -- Quiet during Checks 1. Ensure Speedup Table operation air temperature entering indoor and outdoor units. If pressure and temperature do not match on chart, system refrigerant charge may not be correct. Do not use chart to adjust refrigerant charge. 3. Tighten tight. L_ requirements. Check Chart Procedure IMPORTANT: ---<7>--- range. 80 fl (24.38 m) or greater than 20 See Long Line Guideline for Heating Check Chart on outdoor unit. This chart indicates whether a correct relationship exists between system operating pressure and Final 25 are in a more favorable If line length is beyond m) vertical separation, Heating To temperatures 70°F (21.11°C), or the outdoor range, adjust charge for line set system outlined in customer AND MAINTENANCE For continuing high performance and to nfininfize possible equipment failure, periodic maintenance must be performed on this equipment. Frequency of maintenance areas, such as coastal information. may vary depending upon geographic applications. See Users Manual for PURON® (R-410A) QUICK REFERENCE GUIDE • Puron refrigerant operates at 50-70 percent higher pressures than R-22. Be sure that servicing equipment and replacement components are designed to operate with Puron • Puron refrigerant cylinders are rose colored. • Recovery cylinder service pressure rating must be 400 psig, DOT 4BA400 or DOT BW400. • Puron 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 pressure rating. • Leak detectors should be designed to detect HFC refrigerant. • Puron, 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 Puron 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 or piston metering device, it must be changed to a hard shutoff Puron 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 Puron 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 Puron TXV metering device. Copyright 2010 Carrier Corp. • 7310 W. Morris Manufacturer reserves the right to change, St. • Indianapolis, IN 46231 at any time, specifications and designs Printed without in U.S.A. Edition Date: notice and without 8 01/10 obligations, Catalog No: 25HCB-C-3SI Replaces: 25HCB3-5-2SI
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