Installation Instructions
Contents
1. 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 GROUND AND POWER WIRES Connect ground wire to ground connection in control box for safety Connect power wiring to contactor as shown in Fig 6 DISCONNECT PER N E C AND OR LOCAL CODES O CY O ARRE 2 1 O OC 3 PHASE ONLY BLUE C L 5 CONTACTOR FIELD GROUND m m m WIRING S GROUND LUG A94025 Fig 6 Line Power Connections CONNECT CONTROL WIRING Route 24v control wires through control wiring grommet and connect leads to control wiring See Fig 7 Use No 18 AWG color coded insulated 35 C minimum wire If thermostat is located more than 100 ft from unit as measured along the control voltage wires use No 16 AWG color coded wire to avoid excessive voltage drop Use furnace transformer 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 TYPICAL FAN COIL HP THERMOSTAT 24 VAC HOT 24 VAC COM HEAT STAGE COOL HEAT2. STAGE 1 A02325 LEGEND 24V FACTORY WIRING 24 FIELD WIRING FIELD SPLICE CONNECTION lt 1 OUTDOOR THERMOSTAT EMERGENCY HEAT RELAY SUPPLEMENTAL HEAT RELAY A97413 Fig 7 Generic Wiring Diagrams See Thermostat Installation Instructions for wiring specific unit combinations COMPRESSOR CRANKCASE HEATER A crankcase heater is required if refrigerant tubing is longer than 80 ft 24 38 m When equipped with a crankcase heater energize heater a minimum of 24 hours before starting unit To energize heater only set thermostat to OFF mode and close electrical disconnect to outdoor unit INSTALL ELECTRICAL ACCESSORIES Refer to individual instructions packaged with kits or accessories when installing START UP A CAUTION UNIT DAMAGE AND OR PERSONAL INJURY HAZARD Failure to follow this caution may result in personal injury and or unit component damage Service valve gauge ports are equipped with Schrader valves Wear safety glasses and gloves when handling refrigerant 1 Fully open liquid and vapor service valves 2 Unit is shipped with valve stem s front seated closed and caps installed Replace stem caps after system is opened to refrigerant flow Replace caps finger tight and tighten an additional 1 12 with wrench 3 Close electrical disconnects to energize system 4 Set room thermostat at desired temperature Be sure set point is below indoor ambient temperatu
3. 1 256th of original time See Table 3 6 When you hear reversing valve change position remove screwdriver immediately otherwise control will 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 See Fig 9 Table 3 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 of C gt nrs Us PR C gt Rt R2 R3 R11 HK32EA001 C A02001 Rev B Fig 9 Defrost Control Step 1 Check Charge This product can be installed with indoor sections that use either fixed or TXV type expansion devices After determining the type of expansion device being used refer to the following sections for checking charge in cooling mode Factory charge amount and desired subcooling are shown on unit rating plate Additional subcooling may be required to achieve optimal heating performance based on th
4. 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 A CAUTION UNIT OPERATION HAZARD Failure to follow this caution may result in improper product operation Do not bury more than 36 914 mm of line set underground Refrigerant may migrate to cooler buried section during extended periods of unit shut down causing refrigerant slugging and possible compressor damage at start up If ANY section of the line set is buried underground provide a minimum 6 152 mm vertical rise at the service valve OUTDOOR WALL INDOOR WALL AUN Ea r ae LIQUID TUBE l SA SUCTION TUBE THROUGH THE WALL g OST HANGER STRAP AROUND SU ONLY INSULATION ooe b ae TUBE e ll 2 rmn l k N LIQUID TUBE SUSPENSION A07588 Fig 1 Connecting Tubing Installation GENERAL INSPECT NEW UNIT File claim with shipping com
5. TXV FV4CN B F 003 FF1ENP036 FF1ENP037 PF4MNB037 PF4MNA036 037 CAP 42 A CNP 4221A CNPV 4217A CSPH 4212A FB4CNF042 TXV PF4MNB043 PF4MNA042 043 CAP 4817A CAP 48 21 24 A CNP 4B A CSPH 4812A FB4CNF048 TXV FV4CN B F 005 PF4MNB049 PF4MNA048 049 CAP 60 A CNP 6024A CSPH 6012A PF4MNA061 FB4CNFO60 FV4CNBO06 PF4MNBO061 PF4MNAO60 Table 5 Required Liquid Line Temperatures F LIQUID PRESSURE AT REQUIRED SUBCOOLING TEMPERATURE F SERVICE VALVE PSIG 8 10 12 14 16 18 251 76 74 72 70 68 66 259 78 76 74 72 70 68 266 80 78 76 74 72 70 274 82 80 78 76 74 72 283 84 82 80 78 76 74 291 86 84 82 80 78 76 299 88 86 84 82 80 78 308 90 88 86 84 82 80 317 92 90 88 86 84 82 326 94 92 90 88 86 84 335 96 94 92 90 88 86 345 98 96 94 92 90 88 354 100 98 96 94 92 90 364 102 100 98 96 94 92 374 104 102 100 98 96 94 384 106 104 102 100 98 96 395 108 106 104 102 100 98 406 110 108 106
6. energized Remaining bank of supplemental electric heat will be energized when outdoor temperature falls below outdoor thermostat setting When thermostat is satisfied its contacts open de energizing contactor and relays All heaters and motors should stop 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 See Fig 9 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 temperature 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 8 This reduces the timing sequence to
7. transmission of vibration to building Consult local codes governing rooftop applications Tiedown Knockouts 2 Places i Minimum Tie Down i Base Pan A Mounting Width x Depth Knockouts in mm Pad in mm Dimensions A B c in mm 23 1 2 X 23 1 2 4 7 19 18 1 16 7 3 16 26 x 26 596 9 X 596 9 111 0 458 8 182 6 660 x 660 31 1 2 X 31 1 2 6 9 16 24 11 16 9 1 8 35 X 35 800 1 X 800 1 166 7 627 1 231 8 889 x 889 A08073 Fig 2 Tie Down Knockouts CLEARANCE REQUIREMENTS When installing allow sufficient space for airflow clearance wiring refrigerant piping and service Allow 24 in 609 6 mm clearance to service end of unit and 48 in 1219 2 mm above unit For proper airflow a 6 in 152 4 mm clearance on 1 side of unit and 12 in 304 8 mm on all remaining sides must be maintained Maintain a distance of 24 in 609 6 mm between units or 18 in 457 2 mm if no overhang within 12 ft 3 66 m Position so water snow or ice from roof or eaves cannot fall directly on unit On rooftop applications locate unit at least 6 in 152 4 mm above roof surface OPERATING AMBIENT The minimum outdoor operating ambient in cooling mode is 55 F 12 78 C and the maximum outdoor operating ambient in cooling mode is 125 F
8. 1 C or the outdoor temperature is not in the favorable range adjust charge for line set 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 and outdoor temperatures are in a more favorable range NOTE If line length is beyond 80 ft 24 38 m or greater than 20 ft 6 10 m vertical separation See Long Line Guideline for special charging requirements Units with Cooling Mode TXV Units installed with cooling mode TXV require charging by the subcooling method 1 Operate unit a minimum of 10 minutes before checking charge 2 Measure liquid service valve pressure by attaching an accur ate gage to service port 3 Measure liquid line temperature by attaching an accurate thermistor type or electronic thermometer to liquid line near outdoor coil 4 Refer to unit rating plate for required subcooling temperat ure 5 Refer to Table 5 Find the point where required subcooling temperature intersects measured liquid service valve pres sure 6 To obtain required subcooling temperature at a specific li quid line pressure add refrigerant if liquid line temperature is higher than indicated or reclaim refrigerant if temperature is lower Allow a tolerance of 3 F Units with Indoor Pistons Units installed with indoor pistons require charging by the superheat method The following
9. 104 102 100 416 112 110 108 106 104 102 427 114 112 110 108 106 104 439 116 114 112 110 108 106 450 118 116 114 112 110 108 462 120 118 116 114 112 110 474 122 120 118 116 114 112 486 124 122 120 118 116 114 499 126 124 122 120 118 116 511 128 126 124 122 120 118 Table 6 Superheat Charging Heat Pump Only a EVAPORATOR ENTERING AIR TEMPERATURE F WB OUTOQOR TEMPLE 50 52 54 56 58 60 62 64 67 68 70 72 74 76 55 11 11 12 12 12 13 17 20 24 24 25 25 25 25 60 6 6 7 7 7 7 12 16 21 22 23 23 23 23 65 3 7 12 18 19 21 21 22 22 70 7 14 16 18 20 20 20 75 3 11 13 16 18 18 19 82 6 8 12 15 16 17 85 4 7 11 14 15 16 90 4 8 12 14 15 95 6 10 12 14 100 4 8 11 12 105 3 6 9 11 110 5 7 10 115 3 6 8 Optimum performance point 82 F outdoor ambient and 80 F dry bulb 67 F wet bulb indoor conditions DOE B Test Conditions 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 F is at low side service port Allow a tolerance of 3 F Note Indoor dry bulb between 70 F and 80 F Table 7 Required Suction Line Temperature SUPERHEAT TEMP SUCTION PRESSURE AT SERVICE PORT PSIG F 107 8 112 2 116 8 121 2 126 130 8 138 8 140 8 145 8 0 35 37 39
10. 41 43 45 47 49 51 2 37 39 41 43 45 47 49 51 53 4 39 41 43 45 47 49 51 53 55 6 41 43 45 47 49 51 53 55 57 8 43 45 47 49 51 53 55 57 59 10 45 47 49 51 53 55 57 59 61 12 47 49 51 53 55 57 59 61 63 14 49 51 53 55 57 59 61 63 65 16 51 53 55 57 59 61 63 65 67 18 53 55 57 59 61 63 65 67 69 20 55 57 59 61 63 65 67 69 71 22 57 59 61 63 65 67 69 71 73 24 59 61 63 65 67 69 71 73 75 26 61 63 65 67 69 71 73 75 77 28 63 65 67 69 71 73 75 77 79 30 65 67 69 71 73 75 77 79 81 FINAL CHECKS IMPORTANT Before leaving job be sure to do the following A CAUTI 0 N 1 Securely fasten all panels and covers ENVIRONMENTAL HAZARD 2 Tighten Service walve st m Caps to 1 12 t rm past finger Failure to follow this caution may result in environmental tight pollution 3 Leave User s Manual with home owner Explain system Remove and re cycle all components or materials i e oil operation and periodic maintenance requirements outlined refrigerant circuit board etc before final disposal of unit in manual CARE AND MAINTENANCE For continuing high performance and to minimize possible equipment failure it is essential that periodic maintenance be performed on this equipment Consult your servicing contractor or Owner s Manual for proper frequency of maintenance Frequency of maintenance may vary depending upon geographic areas such as coastal applications R 410A REFRIGERANT QUICK REFERENCE GUIDE e R 410A r
11. 51 67 C The maximum operating ambient in heating mode is 66 F 18 89 C FILTER DRIER A field installed liquid line filter drier is recommended for this installation Refer to Fig 3 and install filter drier as follows 1 Braze 5 in 127 mm liquid tube to the indoor coil 2 Wrap filter drier with damp cloth 3 Braze filter drier to above 5 in 127 mm liquid tube Flow arrow must point toward indoor coil 4 Connect and braze liquid refrigerant tube to the filter drier 05227 Fig 3 Liquid Line Filter Drier Installed at Indoor Unit 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 one of the feeder tubes there is a 3 8 in O D stub tube approximately 2 in 50 8 mm long See Fig 4 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 TUBE STUB TUBE aN DEFROST THERMOSTAT A97517 Fig 4 Defrost Thermostat Location 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 co
12. PH13N P B SIZES 018 061 SPLIT SYSTEM HEAT PUMP WITH R 410A REFRIGERANT Installation Instructions 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 National Electrical Code NEC for special requirements 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 serious hazards which will result in severe personal injury or death WARNING signifies hazards which could result in perso
13. e installed indoor unit see Table 4 Charging method is shown on the information plate inside unit For TXV use subcooling method For piston use superheat method To properly check or adjust charge conditions must be favorable for subcooling or superheat charging Favorable conditions exist when the outdoor temperature is between 70 F and 100 F 21 11 C and 37 78 C and the indoor temperature is between 70 F and 80 F 21 11 C and 26 67 C Follow the procedure below Unit is factory charged for 15ft 4 57 m of lineset Adjust charge by adding or removing 0 6 oz ft 018 kg m of 3 8 liquid line above or below 15ft 4 57 m respectively For standard refrigerant line lengths 80 ft 24 38 m or less allow system to operate in cooling mode at least 15 minutes If conditions are favorable check system charge by super heat method for fixed metering device and subcooling method for TXV If any adjustment is necessary adjust charge slowly and allow system to operate for 15 minutes to stabilize before declaring a properly charged system Refer to Table 4 for additional subcooling required 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 26 67 C before attempting to check system charge by subcooling method as described above If the indoor temperature is below 70 F 21 1
14. efrigerant 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 e R 410A refrigerant cylinders are rose colored e Recovery cylinder service pressure rating must be 400 psig DOT 4BA400 or DOT BW400 e 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 e Manifold sets should be 700 psig high side and 180 psig low side with 550 psig low side retard e Use hoses with 700 psig service pressure rating e Leak detectors should be designed to detect HFC refrigerant e R 410A refrigerant as with other HFCs is only compatible with POE oils e Vacuum pumps will not remove moisture from oil e Do not use liquid line filter driers with rated working pressures less than 600 psig e Do not leave R 410A refrigerant suction line filter driers in line longer than 72 hours e Do not install a suction line filter drier in liquid line e POE oils absorb moisture rapidly Do not expose oil to atmosphere e POE oils may cause damage to certain plastics and roofing materials e Wrap all filter driers and service valves with wet cloth when brazing e A factory approved liquid line filter drier is required on every unit e Do NOT use an R 22 TXV e If indoor unit is equipped with an R 22 TXV it must be chan
15. ged to a hard shutoff R 410A refrigerant TXV e Never open system to atmosphere while it is under a vacuum e 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 e Do not vent R 410A refrigerant into the atmosphere e Do not use capillary tube coils e Observe all warnings cautions and bold text e All indoor coils must be installed with a hard shutoff R 410A refrigerant TXV metering device Always Ask For FACTORY aI THORIZE AU m RIS Copyright 2012 Payne Heating amp Cooling 7310 W Morris St e Indianapolis IN 46231 Printed in Mexico Edition Date 12 12 Catalog No IM PH13 07 Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations Replaces IM PH13 06 10
16. nal injury or death CAUTION is used to identify unsafe practices which may 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 4 amp 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 A 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 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 bends 4 Leave some slack between structure and unit to absorb vi bration 5 When passing refrigerant tubes through the wall seal open ing with
17. ntaining adapter tube 4 Remove Teflon washer from bag and install in open end of liquid service valve See Fig 5 5 Remover adapter tube from bag and connect threaded nut to liquid service valve Tighten nut finger tight and then with wrench an additional 1 2 turn 15 ft Ib DO NOT OVER TIGHTEN TEFLON SEAL DP L PISTON PISTON BODY L SWEAT FLARE ADAPTER LIQUID SERVICE VALVE A08077 Fig 5 Liquid Service Valve with Sweat Adapter Tube Units containing R410a refrigerant MAKE REFRIGERANT TUBING CONNECTIONS Outdoor 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 24 38 m consult Residential Split System Long Line Application Guideline Connect tubing to fittings on outdoor unit vapor and liquid service lines See Table 1 If refrigerant tubes or the indoor coil are exposed to atmospheric conditions for longer than 5 minutes they must be evacuated to 500 microns to eliminate contamination and moisture in system Table 1 Refrigerant Connections and Recommended Liquid and Vapor Tube Diameters in Connect Tube Connect Tube UNIE SIZE Dia Dia Dia Dia 018 019 025 5 8 5 8 024 030 031 3 4 3 4 036 037 042 043 3 8 3 8 7 8 7 8 048 049 7 8 7 8 060 061 7 8 11 8 Note 1 Units are rated with 25 ft 7 6 m
18. of lineset See Product Data sheet or performance data when using other size and length linesets For tubing lengths greater than 80 ft 24 38 m consult the Residential Split System Long Line Guideline Maximum liquid line size is 3 8 in including long line applications 2 Do not apply capillary tube indoor coils to these units OUTDOOR UNIT CONNECTED TO FACTORY APPROVED INDOOR UNIT Outdoor unit contains approximate system refrigerant charge for operation with approved AHRI rated indoor unit when connected by 15 ft 4 57 m of field supplied or factory accessory tubing and factory supplied filter drier Some indoor units require additional subcooling to achieve optimal heating performance Using Table 4 Additional Subcooling Required check refrigerant charge for maximum efficiency SWEAT CONNECTION 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 Use refrigerant grade tubing 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 industry accepted methods and materials Consult local code requirements Refrigerant tubing and indoor coil are now ready for leak testing This check should include all field and factory joints FINAL TUBING CHECK IMPORTANT Check to be certain fact
19. ory 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 MAKE ELECTRICAL CONNECTIONS A 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 for correction of 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 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 ROUTE GROUND 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 4 WARNING ELECTRICAL SHOCK HAZARD
20. pany 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 Check 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 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
21. procedure is valid when indoor airflow is within 21 percent of its rated CFM 1 2 10 11 12 Operate unit a minimum of 10 minutes before checking charge Measure suction pressure by attaching an accurate gage to suction valve service port Measure suction temperature by attaching an accurate ther mistor type or electronic thermometer to suction line at ser vice valve Measure outdoor air dry bulb temperature with thermomet er Measure indoor air entering indoor coil wet bulb temper ature with a sling psychrometer Refer to Table 6 Find outdoor temperature and evaporator entering air wet bulb temperature At this intersection note superheat Where a dash appears on the table do not attempt to charge system under these conditions or refriger ant slugging may occur Charge must be weighted in adding or removing 0 6 oz ft of 3 8 liquid line above or be low 15 ft 4 57 m respectively Refer to Table 7 Find superheat temperature located in item 6 and suction pressure At this intersection note suction line temperature If unit has a higher suction line temperature than charted temperature add refrigerant until charted temperature is reached If unit has a lower suction line temperature than charted temperature reclaim refrigerant until charted temperature is reached When adding refrigerant charge in liquid form into suction service port using a flow re
22. re 5 Set room thermostat to HEAT or COOL and fan control to ON or AUTO mode Operate unit for 15 minutes Check system refrigerant charge See Check Charge 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 SEQUENCE OF OPERATION Turn on power to indoor and outdoor units Transformer is energized 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 On three phase models with scroll compressors the units are equipped with a phase monitor to detect if the incoming power is correctly phased for compressor operation See Fig 8 and Table 2 If the phasing is correct circuit R Y energizes contactor starting outdoor fan motor and compressor circuit R G energizes indoor unit blower relay starting indoor blower motor on 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 rever
23. se rotation See Fig 8 and Table 2 This will not allow contactor to be energized Disconnect power to unit and interchange 2 field wiring leads on unit contactor CONTACTOR 24VAC COM 000 N o 3 7 x O Z M Y ST OFF NOD 24VAC ON 0K FLASH PHASE PROBLEM A L L L3 LI A00010 Fig 8 3 Phase Monitor Control Table 2 Phase Monitor LED Indicators LED STATUS OFF No call for compressor operation FLASHING Reversed phase ON Normal NOTE If the phasing is incorrect the contactor will not be energized To correct the phasing interchange any two of the three power connections on the field side When thermostat is satisfied its contacts open de energizing contactor and blower relay Compressor and motors stop NOTE If indoor unit is equipped with a time delay relay circuit the blower runs an additional 90 seconds to increase system efficiency HEATING On a call for heating thermostat makes circuits R Y and R G If phasing is correct circuit R Y energizes contactor starting outdoor fan motor and compressor Circuit R G energizes indoor blower relay starting blower motor on high speed Should temperature continue to fall R W2 is made through second stage room thermostat Circuit R W2 energizes relays bringing on supplemental electric heat If outdoor thermostat is used field installed option only the first bank will be
24. stricting device If outdoor air temperature or pressure at suction valve changes charge to new suction line temperature indicated on chart Optimum performance will be achieved when the operating charge produces 5 to 6 F suction superheat at suctio service valve with 82 F outdoor ambient and 80 26 7 C dry bulb 67 F 19 4 C wet bulb indoo temperature DOE B test conditions at rated airflow Heating Check Chart Procedure To check system operation during heating cycle refer to the Heating Check Chart 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 may not be correct Do not use chart to adjust refrigerant charge Table 4 Additional Subcooling Required Indoor Unit Subcooling Delta from Rating Plate Value Outdoor Unit Tonnage 030 042 CAP 1814A CNPV 1814A PF4MNA018 019 TXV FB4CNF018 TXV FF1ENP018 019 PF4MNB019 CAP 24 A CNP 24 A CSPH 2412A FB4CNF024 TXV FF1ENP024 025 FV4CNF002 PF4MNB025 PF4MNA024 025 CAP 30 A CNP 30 A CSPH 3012A PF4MNA030 031 TXV FB4CNF030 TXV FF1ENP030 FF1ENPO31 PF4MNB031 CAP 36 A CNP 36 A CSPH 3612A FB4CNF036
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