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13ACD Installation Manual

1. to the vapor valve service port LOW neH NOTE Normally the high pressure hose is connected to MANIFOLD GAUGE SET the liquid line port However connecting it to the vapor port better protects the manifold gauge set from high pressure Q damage re B With both manifold valves closed connect the cylinder of U AE OUTDOOR UNIT HCFC 22 refrigerant to the center port of the manifold gauge T set NOTE Later in the procedure 2 the HCFC 22 container will be er replaced by the nitrogen A container B IMPORTANT Leak detector _ Da t must be capable of sensing TO VAPOR HCFC 22 refrigerant r SERVICE VALVE or HCFC 22 NITROGEN SS TEST FOR LEAKS ee After the line set has been connected to the indoor and outdoor units check the line set connections and indoor unit for leaks Use the following procedure to test for leaks A With both manifold valves closed connect the cylinder of HCFC 22 refrigerant to the center port of the manifold gauge set Open the valve on the HCFC 22 cylinder vapor only B Openthe high pressure side of the manifold to weigh in a trace amount of HCFC 22 into the line set and indoor unit A trace amount is a maximum of two ounces 57 g refrigerant or three pounds 31 kPa pressure Close the valve on the HCFC 22 cylinder and the valve on the high pressure side of the manifold gauge set Disconnect the HCFC 22 cylinder C Connect a cylinder of dry
2. USE REGULATOR TO FLOW NITROGEN AT 1 TO 2 PSIG OUTDOOR UNIT e o ip LIQUID LINE LIQUID LINE SERVICE VALVE d NITROGEN WHEN BRAZING LINE SET TO SERVICE VALVES POINT FLAME AWAY FROM SERVICE VALVE Figure 6 Brazing Procedures 506694 01 11 10 Page 8 WRAP SERVICE VALVES To help protect service valve seals during brazing wrap a saturated cloth around service valve bodies and copper tube stub Use another saturated cloth underneath the valve body to protect the base paint Flow regulated nitrogen at 1 to 2 psig through the refrigeration gauge set into the valve stem port connection on the liquid service valve and out of the suction vapor valve stem port See steps 3A 3B and 3C on manifold gauge set connections 5 FLOW NITROGEN 6 BRAZE LINE SET Wrap both service valves with a saturated cloth as illustrated here before brazing to line set LIQUID LINE SERVICE VALVE WHEN BRAZING LINE SET TO SERVICE VALVES POINT FLAME AWAY FROM SERVICE VALVE IMPORTANT Allow braze joint to cool Apply additional saturated cloths to help cool brazed joint Do not remove wet rag until piping has cooled POSEE EAN Temperatures above 250 F will damage valve seals LIQUID LINE WARNING SUCTION VAPOR LINE 1 FIRE PERSONAL INJURY OR PROPERTY SERVICE VALVE DAMAGE will result if you do not wrap a wet cloth around both liquid and suction l
3. If refrigerant is added or removed retest to confirm that unit is properly charged NOTE Do not attempt to charge system where a dash appears in the table system could be overcharged Superheat is taken at suction line service port Suction line superheat must never be less than 5 F at the suction line service port Figure 18 Superheat Method RFC Page 18 506694 01 11 10 Table 4 Normal Operating Pressures Liquid 10 and Suction 5 psig A IMPORTANT 13ACD 018 024 030 Use this table to perform maintenance checks it is not a procedure for charging the system Minor variations in these pressures may be due to differences in installations Significant deviations could mean that the system is not properly charged or that a problem exists with some component in the system 036 042 048 060 F C Liquid Suction Liquid Suction Liquid Suction Liquid Suction Liquid Suction Liquid Suction Liquid Suction Expansion Valve TXV 65 18 70 21 75 24 80 27 85 29 90 3 95 35 100 38 105 41 138 79 148 80 160 80 174181 188 81 204 81 219 82 236 82 253183 110 43 272184 115 45 291184 Fixed Orifice RFC 65 18 139767 70 21 149770 75 24 80 27 85 2 90 3 95 35 100 38 105 41 110 43 115 45 Maintenance Maintenance and service must be performed by a qualified installer or service agency At the beginning of each cooling season the s
4. Open the liquid and vapor line service valves counterclockwise to release the factory nitrogen charge contained in outdoor unit into the 2 EVACUATE THE SYSTEM RECOMMEND i eem 3 8 HOSE A system B Open both manifold valves and start the vacuum pump C Evacuate the line set indoor unit and outdoor unit to an absolute pressure of 23 000 microns 29 01 inches of mercury NOTE During the early stages of evacuation it is desirable to close the manifold gauge valve at least once A rapid rise in pressure indicates a relatively large leak If this occurs repeat the leak testing procedure NOTE The term absolute pressure means the total actual pressure within a given volume or system above the absolute zero of pressure Absolute pressure in a vacuum is equal to atmospheric pressure minus vacuum pressure When the absolute pressure reaches 23 000 microns 29 01 inches of mercury perform the following Close manifold gauge valves Close valve on vacuum pump e Turn off vacuum pump Disconnect manifold gauge center port hose from vacuum pump Attach manifold center port hose to a dry nitrogen cylinder with pressure regulator set to 150 psig 1034 kPa and purge the hose e Open manifold gauge valves to break the vacuum in the line set and indoor unit Close manifold gauge valves Shut off the dry nitrogen cylinder and remove the manifold gauge hose from the cylinder Open the manifold gauge valves to release the dr
5. Evacuate the system again using evacuating procedure provided in this instruction Weigh in refrigerant using procedure outlined under Unit Start Up and Weigh In Charging 6 Monitor the system to determine the amount of moisture remaining in the oil It may be necessary to replace the filter drier several times to achieve the required dryness level If system dryness is not verified the compressor will fail in the future Unit Start Up and Weigh In Charging 1 2 Page 15 Check that fan rotates freely Inspect all factory and field installed wiring for loose connections After evacuation of the outdoor unit line set and indoor unit are complete close the manifold gauge set valves Disconnect vacuum pump from center hose of gauge set Connect the center hose of the gauge set to a cylinder of HCFC 22 and purge the hose Then place the cylinder upside down on a scale see figure 14 Open the high side manifold gauge valve and weigh in liquid refrigerant Refer to unit nameplate to determine correct weigh in charge see figure 13 Close manifold gauge valves 13ACD SERIES WEIGH IN CHARGING ADD AMOUNT OF HCFC 22 REFRIGERANT AS SPECIFIED ON UNIT NAMEPLATE t Liquid Line Set Diameter 3 8 9 5 mm amount ADJUST AMOUNT FOR VARIATION IN LINE SET LENGTH AS LISTED BELOW TOTAL CHARGE Refrigerant Charge per Line Set Length Ounces per 5 feet g per 1 5 m adjust f
6. Measure liquid line pressure and use the value to determine saturation temperature SAT Subtract to determine subcooling SC SAT LIQ SC Compare results with table below If value is greater than shown remove refrigerant if less than shown add refrigerant If refrigerant is added or removed retest using approach method SC Subcooling Values F 1 0 C 0 6 Model 024 030 036 042 048 060 F C 12 6 7 9 5 0 10 5 6 14 8 0 10 5 6 13 7 2 Figure 16 Subcooling Method TXV Page 17 13ACD SERIES A P P ROA H TXV Confirm proper airflow across coil using figure15 Compare unit pressures with table 4 Normal Operating Pressures Outdoor Ambient Temperature 66 F Connect gauge set 18 9 C or ABOVE When heat demand is satisfied set thermostat to call for cooling Allow temperatures and pressures to stabilize Record outdoor ambient temperature AMB Record line temperature LIQ Subtract to determine approach APP LIQ AMB _ C APPS Compare results with table below If value is greater than shown high approach add refrigerant if less than shown liquid temperature too close to ambient temperature low approach remove refrigerant If refrigerant is added or removed retest to confirm that unit is properly charged APP Approach Values F 1 0 C 0 6 Model 0
7. Glass has a very high level of sound transmission For proper placement of unit in relation to a window see the provided illustration in figure 5 PLACING OUTDOOR UNIT ON SLAB When installing a unit at grade level the top of the slab should be high enough above the grade so that water from higher ground would not collect around the unit as illustrated in figure 5 Slab may be level or have a slope tolerance away from the building of not more than two degrees or 2 inches per 5 feet 51 mm per 1524 mm as illustrated in figure 5 INSTALLING OUTDOOR UNIT ON ROOF Install the unit at a minimum of 4 inches 102 mm above the surface of the roof Ensure the weight of the unit is properly distributed over roof joists and rafters Redwood or steel supports are recommended NOTICE Roof Damage This system contains both refrigerant and oil Some rubber roofing material may absorb oil and cause the rubber to swell when it comes into contact with oil The rubber will then bubble and could cause leaks Protect the roof surface to avoid exposure to refrigerant and oil during service and installation Failure to follow this notice could result in damage to roof surface Replacement Line Set This section provides information on replacement of existing line set If replacement line set is not required then proceed to Brazing Connections on page 7 REFRIGERANT LINE SET Field refrigerant piping consists of liquid and suction lines fr
8. COMPRESSOR MO TOR QUTDOOR FAN HEATER COMPRESSOR ONTACTOR COMPR OR S4 SWITCH HIGH PRESSURE S24 SWITCH LOSS Or CHARGE S40 THERMOSTAT CRANKCASE 587 EWIICH LOW PRESS COMP 1i INDICATES OPTIONAL COMPONENTS N FOR USE WITH COPPER CONDUCTORS ONLY REFER TO UNIT RATING PLATE FOR MINIMUM CIRCUIT AMPACITY AND MAXIMUM OVERCURRENT PROTECTION SIZE ZX JUMPER IS USED WHEN TOC IS NOT USED WARNING ELECTRIC SHOCK HAZARD CAN CAUSE INJURY OR DEATH UNIT MUST BE GROUNDED IN ACCORDANCE WITH NATIONAL AND LOCAL CODES LINE VOLTAGE FIELD INSTALLED e em CLASS VOLTAGE FIELD INSTALLED A 208 230 60 OUTDOOR FAN COMPRESSOR CRANKCASE HEATER A4 TIMED OFF CONTROL T9 dicite PONER 20 VA MINIMUN NEC CLASS 2 4 HIGH PRESSURE 237 08 Set TO 24 VAC POWER SOURCE 20 VA MINIMUN NEC CLASS 2 Figure 12 Typical Unit Wiring Diagram A IMPORTANT If unit is equipped with a crankcase heater it should be energized 24 hours before unit start up to prevent compressor damage as a result of slugging Servicing Outdoor Unit Delivered Void of Nitrogen Charge If the outdoor unit is void of factory nitrogen charge clean the system using the procedure described below 1 2 Use nitrogen to repressurize system and check for leaks Evacuate the system using evacuating procedure provided in this instruction Use nitrogen to break the vacuum and install a new filter drier in the system
9. HCFC 22 systems Carefully follow all installation procedures 4 WARNING Installation or repairs made by unqualified persons can result in hazards to you and others Installation MUST conform with local building codes or in the absence of local codes with the National Electrical Code NFPA 70 ANSI C1 1993 or current edition and Canadian Electrical Code Part 1 CSA C22 1 4 CAUTION Improper selection of a matching indoor unit and a matching metering device improper installation adjust ment alteration service or maintenance may void the warranty The qualified installer or agency must use factory authorized kits or accessories when modifying this products Refer to the individual instructions packaged with the kits or accessories when installing NOTE These instructions are intended as a general guide and do not supersede national state or local codes in any way These instructions must be left with the property owner 11 10 506694 01 Page 1 VN TN AA T N TUNA TO ODN TE T e designed for use in systems that use either a RFC The 13ACD air conditioner which will also be referred to in device orifice included with outdoor unit or thermal this instruction as the outdoor unit uses HCFC 22 expansion valve TXV See the 13ACD product refrigerant This outdoor unit is intended as a replacement specification sheetfor approved fixed orifice sizes and outdoor component for use in residential systems which expansion valve kit match u
10. additional 1 6 turn clockwise Reinstall Stem Cap Stem cap protects the valve stem from damage and serves as TO CLOSE ROTATE STEM CLOCKWISE 90 SERVICE PORT the primary seal Replace the stem cap and tighten as follows N v SERVICE PORT i Ee CORE With Torque Wrench Finger tighten and then torque SERVICE PORT cap per table 1 GRP e Without Torque Wrench Finger tighten and use an appropriately sized wrench to turn an additional TO OUTDOOR STEM AP 1 12 turn clockwise UNIT Figure 2 Operating Angle and Ball Type Service Valves Page 3 13ACD SERIES Recovering Refrigerant from Existing System A IMPORTANT The Clean Air Act of 1990 bans the intentional venting of refrigerant CFCs HCFCs AND HFCs as of July 1 1992 Approved methods of recovery recycling or reclaiming must be followed Fines and or incarceration may be levied for noncompliance RECOVERING REFRIGERANT FROM SYSTEM 1 DISCONNECT POWER 2 MANIFOLD GAUGE SET Disconnect all power to the existing outdoor unit at the service Connect a gauge set clean recovery cylinder anda recovery disconnect switch or main fuse box breaker panel machine to the service ports of the existing unit Use the instructions provided with the recovery machine to make the connections SERVICE DISCONNECT SWITCH MANIFOLD GAUGES RECOVERY MACHINE RECOVERING REFRIGERANT CLEAN RECOVERY OUTDOOR UNIT M A CYLINDER Remove exi
11. inspections and maintenance These inspections will determine the necessary need to wash the unit including the outdoor coil Consult your installing contractor for proper intervals procedures for your geographic area or service contract Indoor Unit 1 Clean or change filters 2 Some blower motors are prelubricated and permanently sealed No more lubrication is needed 3 Adjust blower speed for cooling Measure the pressure drop over the coil to determine the correct blower CFM Refer to the unit information service manual for pressure drop tables and procedure 4 Belt Drive Blowers Check belt for wear and proper tension 5 Check all wiring for loose connections Page 19 13ACD SERIES 6 Check for correct voltage at unit blower operating Indoor Coil 1 Clean coil if necessary 7 Check amp draw on blower motor 2 Check connecting lines joints and coil for evidence of oil leaks Motor Nameplate Actual 3 Check condensate line and clean if necessary Start Up and Performance Checklist Job Name Job no Date Job Location City State Installer City State Unit Model No Serial No Service Technician Nameplate Voltage Rated Load Ampacity Compressor Outdoor Fan Maximum Fuse or Circuit Breaker Electrical Connections Tight J Indoor Filter clean Supply Voltage Unit Off Indoor Blower RPM S P Drop Over Indoor Dr
12. stem cap with an appropriately sized wrench Use a service wrench with a hex head extension 3 16 for liquid line valve sizes and 5 16 for vapor line valve sizes to back the stem out counterclockwise as far as it will go TO INDOOR UNIT TO OUTDOOR UNIT ANGLE TYPE SERVICE VALVE BACK SEATED OPENED SERVICE PORT CORE VALVE STEM SHOWN OPEN INSERT HEX WRENCH HERE When service valve stem is OPEN the service port is open to line set indoor and outdoor unit ANGLE TYPE SERVICE VALVE FRONT SEATED CLOSED VALVE STEM SHOWN CLOSED INSERT HEX WRENCH HERE STEM CAP When service valve stem is CLOSED the service port is open to the line set and indoor unit Operating Ball Type Service Valve To Access Service Port A service port cap protects the service port core from contamination and serves as the primary leak seal 1 2 3 1 2 Remove stem cap with an appropriately sized wrench Use an appropriately sized wrenched to open To open valve rotate stem counterclockwise 90 To close rotate stem clockwise 90 Remove service port cap with an appropriately sized wrench TO INDOOR UNIT Connect gauge set to service port When testing is completed replace service port cap and tighten as follows e TO OPEN ROTATE STEM COUNTERCLOCKWISE 90 BALE eb CLOSED per table 1 Without torque wrench Finger tighten and use an appropriately sized wrench to turn an
13. 13ACD SPLIT SYSTEM AIR CONDITIONER WITH DRY NITROGEN HOLDING CHARGE INSTALLATION START UP INSTRUCTIONS These instructions must be read and understood completely before attempting installation TABLE OF CONTENTS Shipping and Packing List 3 Removing Existing Metering Device and Flushing Line General een aei eraa sE bep RE LAS ARMES 2 Setand Indoor Coll od saas terere aes osann T arans 10 Unit Di f 2 Installing New Indoor Metering Device 11 be pd ee US DNE Leak Test Line Set and Indoor Coil 12 Torque Requirements c Leja atlas Gata adel Bee ANE Dea N ah a 3 Evacuating Line Set Indoor Coil and Outdoor Unit 13 Typical Unit Parts Arrangement 2 Electrical Connections 00 cece eee ee 14 Operating Gauge Set and Service Valves 3 Servicing Outdoor Unit Delivered Void of Nitrogen Recovering Refrigerant from Existing System 4 Charge be a eke ris dn UE NEsepttededetentbs 15 Unit Start Up and Weigh In Charging 15 New Outdoor Unit Placement 5 Optimizing System Charge 0 00 000 16 Replacement Line Set 0 00 eee sees eee ees 6 Maintenance aso deeitsqte s eene e te hend 19 Brazing Connections 02200 05 7 Start Up and Performance Checklist 20 NOTICE TO INSTALLER This unit is factory charged with dry nitrogen The unit is intended for installation in existing
14. 24 030 036 042 F C 6 3 3 8 4 4 12 6 7 5 2 8 Figure 17 Approach Method TXV 1 Confirm proper airflow across coil using figure 15 S U P E R AT R FI 2 Compare unit pressures with table 4 Normal Operating Pressures Set thermostat to call for heat must have a cooling load between 70 80 F ABOVE Outdoor Ambient 40 F 4 4 C 21 26 C SH Superheat Values 5 F Connect gauge set When heat demand is satisfied set thermostat to call for cooling oF 70 72 74 76 40 43 46148 51 45 41 44 46 49 50 39 42 44 47 55 38 40 42 44 60 35 38140 43 Record suction line temperature Position temperature sensor on 65 33 36138 41 suction line near suction line service port 70 30 33 36 39 VAP 75 28 31 34 37 Subtract to determine superheat SH Allow temperatures and pressures to stabilize Measure the suction line pressure and use the value to determine saturation temperature SAT 80 25 28 31 35 VAP SAT SH 85 22 26 30 33 Record the wet bulb temperature air entering indoor coil 90 20 24 27 31 95 18 22 25 29 WE lt 100 16 21124 28 Record outdoor ambient temperature 105 13 17 22 26 Compare results with table to the left 110 11 15 20 25 If value is greater than shown add refrigerant if less than shown remove 115 8 14118 24 refrigerant Dry bulb temperature F of entering outdoor ambient air
15. ARNING alloy for copper to copper brazing Use 45 minimum alloy for copper to brass and copper to steel brazing When using a high pressure gas such as dry nitrogen to pressurize a refrigeration or air conditioning system use a A WARNING regulator that can control the pressure r down to 1 or 2 psig 6 9 to 13 8 kPa Danger of fire Bleeding the refrigerant charge from only the high side may result in pressurization of the low side shell and A WARNING suction tubing Application of a brazing Danger of fire Bleeding the refrigerant torch to a pressurized system may result in ignition of the refrigerant and oil charge from only the high side may result mixture Check the high and low pressures before applying heat A CAUTION suction tubing Application of a brazing torch to a pressurized system may result in ignition of the refrigerant and oil mixture Check the high and low pressures before applying heat bi in pressurization of the low side shell and d Brazing alloys and flux contain materials which are hazardous to your health Avoid breathing vapors or fumes from brazing operations Perform operations only in well ventilated areas Wear gloves and protective goggles or face shield to protect against burns Wash hands with soap and water after handling brazing alloys and flux A IMPORTANT Allow braze joint to cool before removing the wet rag from the service valve Temperatures above 250 F can d
16. LINES MOUNT SENSING BULB AT FLARE SEAL CAP EITHER THE 4 OR 8 O CLOCK Tr PERRE ST POSITION NEVER MOUNT ON S BOTTOM OF LINE COPPER FLARE SEAL BONNET MALE BRASS EQUALIZER LINE FITTING SEE TABLE 3 FOR TEFLON RING INDOOR FIXED ORIFICE KITS CATALOG VA A ORIFICE ORIFICE KI VAPOR LINE FIXED ORIFICE RFC 1 1 B v INSTALLATION e BRASS NUT DISTRIBUTOR TUBES LIQUID LINE ORIFICE HOUSING REMOVE AND DISCARD WHITE TEFLON SEAL IF PRESENT Figure 9 Installing Indoor Metering Device Page 11 13ACD SERIES Table 3 Indoor Fixed Orifice Kits A IMPORTANT The Environmental Protection Agency EPA prohibits the intentional venting of HCFC refrigerants during maintenance service repair and disposal of appliance Approved methods of recovery recycling or reclaiming must be followed Part Number Drill Size 100484 07 100484 12 100484 16 100484 24 100484 28 100484 36 100484 45 4 WARNING Leak Test Line Set and Indoor Coil Refrigerant can be harmful if it is inhaled Refrigerant must be used and recovered responsibly After completing the leak testing of the line set and indoor i i i i coil as outlined in figure 10 proceed to Evacuating Line Set Failure to follow this warning may result in personal injury and Indoor Coil on page 13 or death 1 CONNECT GAUGE SET A Connect an HCFC 22 manifold gauge set high pressure hose
17. al side may be J 6 inches 152mm MINIMUM CLEARANCE BETWEEN TWO UNITS Ane Lo 6 5 T DETAIL A DETAIL B Install unit level or if on a slope maintain slope tolerance of 2 degrees or 2 inches per 5 feet 50 mm per 1 5 m away from building ste structure STRUCTURE ee Install unit away from windows DISCHARGE AIR Vea eres Two 90 elbows installed in line set will SALAMA AMAA ll lg gg gg MM N Z SAX ugh ox M Mo yan MOUNTING SLAB MUST SLOPE GROUND LEVEL AWAY FROM BUILDING Figure 5 Placement and Slab Mounting Page 5 13ACD SERIES POSITIONING CONSIDERATIONS 4 CAUTION In order to avoid injury take proper precaution when lift ing heavy objects 4 CAUTION Physical contact with metal edges and corners while applying excessive force or rapid motion can result in personal injury Be aware of and use caution when working near these areas during installation or while servicing this equipment Consider the following when positioning the unit e Some localities are adopting sound ordinances based on the unit s sound level registered from the adjacent property not from the installation property Install the unit as far as possible from the property line e When possible do not install the unit directly outside a window
18. amage valve seals Page 7 13ACD SERIES CUT AND DEBUR Cut ends of the refrigerant lines square free from nicks or dents and debur the ends The pipe must remain round Do not crimp end of the line CUT AND DEBUR lt Y 7 LINE SET SIZE MATCHES SERVICE VALVE CONNECTION SERVICE VALVE CONNECTION COPPER TUBE REDUCER LINE SET SIZE IS SMALLER THAN CONNECTION O ped REFRIGERANT LINE CAP AND CORE REMOVAL Remove service cap and core from both the vapor and liquid line service ports SERVICE PORT a SERVICE SERVICE PORT Al SERVICE PORT CORE SUCTION VAPOR LINE SERVICE VALVE DO NOT CRIMP SERVICE VALVE CONNECTOR WHEN PIPE IS SMALLER THAN CONNECTION ATTACH THE MANIFOLD GAUGE SET FOR BRAZING LINE SETS TO LIQUID AND SUCTION VAPOR LINE SERVICE VALVES Flow regulated nitrogen at 1 to 2 psig through the low side refrigeration gauge set into the liquid line service port valve and out of the suction vapor line service port valve Connect gauge set low pressure side to liquid line service valve service port Connect gauge set center port to bottle of nitrogen with regulator Remove Schrader valve in suction vapor line service port to allow nitrogen to escape SUCTION VAPOR SERVICE PORT MUST BE OPEN TO ALLOW EXIT POINT FOR NITROGEN VAPOR LINE INDOOR UNIT Y Hie gt a ATTACH GAUGES SUCTION VAPOR LINE SERVICE VALVE Low 7 x J HIGH
19. d distributor assembly Disconnect the equalizer line from the expansion valve equalizer line fitting on the vapor line Remove the vapor line sensing bulb Disconnectthe liquid line from the expansion valve at the liquid line assembly Disconnect the expansion valve from the liquid line orifice housing Take care not to twist or damage distributor tubes during this process Remove and discard expansion valve and the two Teflon rings Use a field provided fitting to temporary reconnect the liquid line to the indoor unit s liquid line orifice housing FLUSHING LINE SET The line set and indoor unit coil must be flushed with at least the same amount of clean refrigerant that previously charged the System Check the charge in the flushing cylinder before proceeding A Setthe recovery machine for liquid recovery and start the recovery machine Open the gauge set valves to allow the recovery machine to pull a vacuum on the existing system line set and indoor unit coil Invert the cylinder of clean refrigerant and open its valve to allow liquid refrigerant to flow into the system through the vapor line valve Allow the refrigerant to pass from the cylinder and through the line set and the indoor unit coil before it enters the recovery machine After all of the liquid refrigerant has been recovered switch the recovery machine to vapor recovery so that all of the HCFC 22 vapor is recovered Allow the recovery machine to pull the sy
20. djust indoor airflow using procedure in figure 15 Use either approach subcooling or superheat method see figures 16 and 17 for TXV system or figure 18 for RFC system to optimize system charge Adjust charge as necessary Close gauge set valves and disconnect gauge set Replace the stem and service port caps and tighten as specified in Operating Service Valves on page 3 Recheck voltage while the unit is running Power must be within range shown on the nameplate Temp of air entering o indoor coil F 3 a a 23 23 22 DT 22 22 20 1 Determine the desired DT Measure entering air temperature using dry bulb A and wet bulb B DT is the intersecting value of A and B in the table see triangle 2 Find temperature drop across coil Measure the coil s 22 22 21 21 20 19 dry bulb entering and leaving air temperatures A and C 21 21 20 19 19 18 Temperature Drop Formula Tprop A minus C 20 19 19 18 17 16 3 Determine if fan needs adjustment If the difference 18 17 17 16 15 between the measured Tprop and the desired DT Tprop DT 18 17 17 16 15 15 eu INDOOR All temperatures are COIL expressed in F is within 3 no adjustment is needed See examples Assume DT 15 and A temp 72 these C temperatures would necessitate stated actions DT F ACTION 15 4 c Tprop i
21. e for minimum circuit ampacity and maximum fuse or circuit breaker HACR per NEC Install power wiring and properly sized disconnect switch MAIN FUSE BOX BREAKER PANEL SERVICE DISCONNECT SWITCH NOTE Units are approved for use only with copper conductors Ground unit at disconnect switch or to an earth ground HIGH VOLTAGE GROUND WIRES nameplate for minimum circuit ampacity and maximum overcurrent protection size 24VAC TRANSFORMER Use the transformer provided with the furnace or air handler for low voltage control power 24VAC 40 VA minimum CHECK EXISTING ROOM THERMOSTAT Ensure that existing room thermostat is installed on an inside wall approximately in the center of the conditioned area and 5 feet 1 5m from the floor It should not be installed on an outside wall or where it can be affected by sunlight or drafts THERMOSTAT NOTE 24VAC Class II circuit connections are made in the control panel Any excess high voltage field wiring should be trimmed and secured away from any low voltage field wiring To facilitate a conduit a cutout is located in the bottom of the control panel Connect conduit to the control panel using a proper conduit fitting CONTROL WIRING Use existing or replace low voltage wiring from outdoor to indoor unit and from thermostat to indoor unit as illustrated A Run 24VAC control wires through hole with grommet and secure with provided wire tie B Make 24VAC th
22. ermostat wire connections Locate the two wires from the contactor and make connection using field provided wire nuts e Blackto Y1 e Black to C common NOTE For proper voltages select thermostat wire control wires gauge per table below HIGH VOLTAGE D FELD WIRING NOTE Do not bundle any excess 24VAC control wires inside TYPICAL LOW VOLTAGE CONTROL control panel WIRING THERMOSTAT INDOOR UNIT LOW VOLTAGE FIELD WIRING FACTORY HIGH VOLTAGE SINGLE PHASE WIRING CONNECTIONS CONTACTOR B OUTDOOR UNIT BLACK En CONTROL WIRING COOLING INDOOR BLOWER Q BLACK WIRE RUN LENGTH AWG INSULATION TYPE LESS THAN 100 30 METERS 18 TEMPERATURE RATING MORE THAN 100 30 METERS 16 35 C MINIMUM GROUND A GROMMET AND WIRE TIE COMMON NOTE Wire tie provides low voltage control wire strain relief and to maintain separation of field installed low and high voltage circuits HIGH VOLTAGE FLEXIBLE CONDUIT Page 14 506694 01 11 10 A WARNING Electric Shock Hazard Can cause injury or death Unit must be grounded in accordance with national and local codes Line voltage is present at all components when unit is not in operation on units with single pole contactors Disconnect all remote electric power supplies before opening access panel Unit may have multiple power supplies D DTO ON EY COMPONENT CONTROL TIMED OFF
23. ine service valve bodies and copper tube stub while brazing in the line set The braze when complete must be quenched with water to absorb any residual heat 2 Do not open service valves until refrigerant lines and WHEN BRAZING LINE SET TO indoor coil have been leak tested and evacuated SERVICE VALVES POINT FLAME Refer to procedures provided in this supplement AWAY FROM SERVICE VALVE SUCTION VAPOR LINE SATURATED CLOTH 7 PREPARATION FOR NEXT STEP After all connections have been brazed disconnect manifold gauge set from service ports Apply saturated rags to both service valves to cool piping Once piping is cool remove all wet cloths Figure 7 Brazing Procedures continued Page 9 13ACD SERIES DISTRIBUTOR ASSEMBLY REMOVAL PROCEDURE UNCASED COIL SHOWN OR DISTRIBUTOR TUBES LIQUID LINE ORIFICE HOUSING 1 A TYPICAL EXISTING FIXED ORIFICE TEFLON RING FIXED ORIFICE BRASS NUT LIQUID LINE ASSEMBLY INCLUDES STRAINER On fully cased coils remove the coil access and plumbing panels Remove any shipping clamps holding the liquid line and distributor assembly Using two wrenches disconnect liquid line from liquid line orifice housing Take care not to twist or damage distributor tubes during TWO PIECE PATCH PLATE LIQUID LINE UNCASED COIL ONLY this process Remove and discard fixed orifice valve stem assembly if present and Teflon washer as illustrated above Use a field p
24. k the unit for shipping damage If damaged or if parts are missing immediately contact the last shipping carrier 1 Assembled 13ACD unit 1 Refrigerant flow control RFC kit orifice see table 3 on page 12 for a complete list of available fixed orifice kits Torque Requirements When servicing or repairing HVAC components ensure the fasteners and caps are appropriately tightened Table 1 lists torque values for fasteners Table 1 Torque Requirements Operating Gauge Set and Service Valves USING MANIFOLD GAUGE SET When checking the system charge only use a manifold gauge set that features low loss anti blow back fittings OPERATING SERVICE VALVES The liquid and vapor line service valves are used for removing refrigerant flushing leak testing evacuating checking charge and charging Each valve is equipped with a service port which has a factory installed valve core Figure 2 provides information on accessing and operating both angle and ball type service valves Parts Recommended Torque Service valve cap 8 ft Ib 11 NM Sheet metal screws 16 in Ib 2NM A M PO RTANT Mechie sansi 2 ml SNM To prevent stripping of the various caps used the Compressor bolts 90 in Ib 10 NM appropriately sized wrench should be used and fitted Gauge port seal cap 8 ft Ib 11 NM snugly over the cap before tightening Operating Angle Type Service Valve SERVICE PORT 1 Remove
25. nitrogen with a pressure regulating valve to the center port of the manifold gauge set Adjust dry nitrogen pressure to 150 psig 1034 kPa Open the valve on the high side of the manifold gauge set in order to pressurize the line set and the indoor unit E Afterafew minutes open one of the service valve ports and verify that the refrigerant added to the system earlier is measurable with a leak detector F Afterleak testing disconnect gauges from service ports Figure 10 Leak Test A IMPORTANT Leak detector must be capable of sensing HCFC 22 refrigerant Page 12 506694 01 11 10 Evacuating Line Set Indoor Coil and Outdoor Unit 1 CONNECT GAUGE SET NOTE Remove cores from service valves if not already done e Connect low side of manifold gauge set with 1 4 SAE in line tee to vapor line service valve Connect high side of manifold gauge set ourpoog MANIFOLD to liquid line service valve UNIT A34000 1 4 SAE TEE WITH SWIVEL COUPLER GAUGE SET Connect micron gauge available A connector on the 1 4 SAE in line tee Connect the vacuum pump with vacuum gauge to the center port of the yy MICRON manifold gauge set The center port line GAUGE 1 will be used later for both the HCFC 22 TO VAPOR and nitrogen containers SERVICE VALVE NITROGEN HCFC 22 VACUUM PUMP TO LIQUID LINE SERVICE VALVE J
26. om the outdoor unit braze connections to the indoor unit coil flare or braze connections If replacing line set use brazed non flare line set or field fabricated refrigerant lines as listed in table 2 Existing line set should meet size requirements listed in table 2 NOTE When installing refrigerant lines longer than 50 feet contact technical support for assistance To obtain the correct information from manufacturer be sure to communicate the following points e Model 13ACD and size of unit e g 060 e Line set diameters for the unit being installed as listed in table 2 and total length of installation Number of elbows and if there is a rise or drop of the piping Table 2 Refrigerant Line Set Inches mm Recommended Line Set Field Connections Liquid Line Suction Line 13ACD 018 230 13ACD 024 230 13ACD 030 230 3 8 in 10mm 3 4 in 19 mm Liquid Line 3 8 in 10 mm Suction Line Line Sets 3 4 in 19 mm 13ACD 036 230 13ACD 042 230 13ACD 048 230 3 8 in 10mm 7 8 in 22 mm 3 8 in 10 mm Field fabricated brazed non flare 7 8 in 22 mm 13ACD 060 230 3 8 in 10 mm 1 1 8 in 29 mm 3 8 in 10 mm 1 1 8 in 29 mm Page 6 506694 01 11 10 Brazing Connections Use th d tline in fi 6 and 7 for brazi ine set connections to service valves 9 A IMPORTANT Use silver alloy brazing rods with 5 minimum silver A W
27. pressure due to one of the above system conditions shut off the vapor valve Turn OFF the main power to unit and use a recovery machine to recover any refrigerant left in the indoor coil and line set Perform the following task A Startthe existing system in the cooling mode and close the liquid line valve B Use the compressor to pump as much of the existing HCFC 22 refrigerant into the outdoor unit until the outdoor system is full Turn the outdoor unit main power OFF and use a recovery machine to remove the remaining refrigerant from the system NOTE It may be necessary to bypass the low pressure switches if equipped to ensure complete refrigerant evacuation C When the low side system pressures reach 0 psig close the vapor line valve D Check gauges after shutdown to confirm that the valves are not allowing refrigerant to flow back into the low side of the system Figure 3 Refrigerant Recovery Page 4 506694 01 11 10 New Outdoor Unit Placement Remove existing outdoor unit prior to placement of new outdoor unit See Unit Dimensions on page 2 for sizing mounting slab platforms or supports Refer to figure 4 for mandatory installation clearance requirements CLEARANCE ON ALL SIDES INCHES MILLIMETERS ABOVE UN OE ACCESS PANEL s NOTES Z e Clearance to one of the other three 48 1219 12 305 OS sides must be 36 inches 914mm SI e ca f the remaini M feo ees tray 612 Ince 305mm and the fin
28. ps include an existing indoor coil which is functioning properly itis NOT intended for new installations Important The air conditioning unit must have properly matched system components including indoor unit and This outdoor unit is refrigerant metering device Mismatched equipment may shipped from the factory with nitrogen holding have an impact on the operation performance reliability charge that must be purged from the unit and warranty of the air conditioning unit Unit Dimensions Inches mm 4 A OUTDOOR COIL FAN T E Aeta a Air COMPRESSOR B SUCTION AND LIQUID LINE CONNECTIONS OPTIONAL UNIT STAND OFF KIT 4 FIELD INSTALLED __ IT SEN T4 Model Number A B 13ACD 018 230 24 1 4 616 25 1 4 641 13ACD 024 230 24 1 4 616 25 1 4 641 13ACD 030 230 24 1 4 616 33 1 4 845 13ACD 036 230 24 1 4 616 33 1 4 845 13ACD 042 230 28 1 4 718 29 1 4 743 13ACD 048 230 28 1 4 718 37 1 4 946 13ACD 060 230 28 1 4 718 33 1 4 845 Typical Unit Parts Arrangement U CONTROL BOX NOTE PLUMBING LAYOUT MAY VARY SLIGHTLY BE TWEEN MODEL SIZES GROUND LUG DUAL RUN SINGLE POLE CONTACTOR K1 J CAPACITOR C12 LIQUID LINE RES SERVICE VALVE SERVICE VALVE Figure 1 Typical Unit Parts Arrangement Page 2 506694 01 11 10 Shipping and Packing List Chec
29. r around the other end of the expansion RING ES valve Lightly lubricate connector threads and expose surface of the S Teflon ring with refrigerant oil d Attach the liquid line assembly to the expansion valve Finger tighten and EQUALIZER use an appropriately sized wrench to turn an additional 1 2 turn clockwise LINE as illustrated in the figure above or 20 ft lb 1 8T M Edi SENSING BULB INSTALLATION um T A Attach the vapor line sensing bulb in the proper orientation as illustrated to the right using the clamp and screws provided MALE EQUALIZER LINE NOTE Confirm proper thermal contact between vapor FITTING SEE N line and expansion bulb before insulating the sensing bulb EQUALIZER LINE once installed INSTALLATION FOR B C h li line fi h 3 h li FURTHER DETAILS LIQUID LINE onnect the equalizer line from the expansion valve to the equalizer vapor port on the vapor line Finger tighten the flare nut plus 1 8 turn 7 ft lbs as illustrated below Sensing bulb insulation is required if ON LINES SMALLER THAN A 2 VAPOR LINE mounted external to the coil casing sensing Vis MOUNT SENSING bulb installation for bulb positioning SOGI OSR POEMON OR EQUALIZER LINE INSTALLATION Remove and discard either the flare seal cap or flare nut with copper flare NOTE NEVER seal bonnet from the equalizer line port on the vapor line as illustrated in the MOUNT ON BOTTOM figure below OF LINE ON 7 8 AND LARGER
30. rom 15 feet 4 6 m line set 3 ounce per 5 85 g per 1 5 m NOTE If line length is greater than 15 ft 4 6 m add this amount If line length is less than 15 ft 4 6 m subtract this Figure 13 Gauge Set Charge Setup and Weigh In NOTE Refrigerant tank should be turned right side up to deliver vapor during charge optimizing procedure MANIFOLD GAUGE SET LOW S X HIGH OUTDOOR O UNIT REFRIGERANT TANK N Figure 14 Gauge Set Charge Setup Optimizing System Charge This section outlines procedures for optimizing the system charge NOTE Gauge set should be connected as illustrated in figure 14 however refrigerant tank should be turned right side up to deliver refrigerant gas during charge optimizing procedure Page 16 506694 01 11 10 Check voltage supply at the disconnect switch The voltage must be within the range listed on the unit s nameplate If not do not start the equipment until you have consulted with the power company and the voltage condition has been corrected Make sure the refrigerant cylinder is right side up so that it will deliver gas during the charge optimizing procedure Set the thermostat for a cooling demand Turn on power to the indoor unit and close the outdoor unit disconnect switch to start the unit Allow unit to run for five minutes to allow pressures to stabilize Check and a
31. rovided fitting to temporarily reconnect the liquid line to the indoor unit s liquid line orifice housing CONNECT GAUGES AND EQUIPMENT FOR FLUSHING PROCEDURE INVERTED CYLINDER CONTAINS CLEAN LIQUID HCFC 22 TO BE A USED FOR FLUSHING GAUGE MANIFOLD LOW VA VAPOR LINE NEW O SERVICE VALVE OUTDOOR NZ UNIT EXISTING INDOOR UNIT LIQUID LINE SERVICE VALVE OPENED CLOSED TANK RETURN Z INLET DISCHARGE RECOVERY RECOVERY MACHINE CYLINDER Inverted HCFC 22 cylinder with clean refrigerant to the vapor service valve HCFC 22 gauge set low side to the liquid line valve HCFC 22 gauge set center port to inlet on the recovery machine with an empty recovery tank to the gauge set Connect recovery tank to recovery machine per machine instructions Removing Existing Metering Device and Flushing Line Set and Indoor Coil Flushing is only recommended if existing indoor coil and line set are to be used Otherwise proceed to Installing Indoor Metering Device on page 11 1 BR mova EXISTING EXPANSION VALVE REMOVAL PROCEDURE UNCASED COIL SHOWN STUB END EXPANSION ORIFICE VALVE DISTRIBUTOR vers a TEFLON i D i SENSING _ LINE EQUALIZER E LIQUID LINE ASSEMBLY WITH BRASS NUT MALE EQUALIZER LINE FITTING SENSING BULB LIQUID LINE On fully cased coils remove the coil access and plumbing panels Remove any shipping clamps holding the liquid line an
32. s 539 19 589 14 15 62 10 15 4 Adjust the fan speed See indoor unit instructions to increase decrease fan speed Increase the airflow 1 within 3 range no change 5 Decrease the airflow Changing air flow affects all temperatures recheck temperatures to confirm that the temperature drop and DT are within 3 Figure 15 Checking Indoor Airflow over Evaporator Coil Using Delta T Chart SUBCOOLING TXV Outdoor Ambient Temperature is 65 F 18 3 C or BELOW BLOCK OUTDOOR COIL sometimes necessary with lower temperatures Use cardboard or plastic sheet to restrict the airflow through the outdoor coil to achieve pressures from 325 375 psig 2240 2585 kPa Higher pressures are needed to check charge Block equal sections of air intake panels and move coverings sideways until the liquid pressure is in the above noted ranges Confirm proper airflow across coil using figure 15 Compare unit pressures with table 4 Normal Operating Pressures 3 Set thermostat to call for heat must have a cooling load between 70 80 F 21 26 C Connect gauge set Measure outdoor ambient temperature When heat demand is satisfied set thermostat to call for cooling Allow temperatures and pressures to stabilize NOTE If necessary block outdoor coil to maintain 200 250 psig Record liquid line temperature Position temperature sensor on liquid line near liquid line service port LIQ
33. stem down to zero Close the valve on the inverted HCFC 22 drum and the gauge set valves Pump the remaining refrigerant out of the recovery machine and turn the machine off Figure 8 Removing Metering Device and Flushing Page 10 506694 01 11 10 Installing New Indoor Metering Device This outdoor unit is designed for use in existing HCFC 22 See the 13ACD product specification sheet for approved systems that use either a fixed orifice RFC or expansion fixed orifice sizes and expansion valve kit match ups The valve metering device purchased separately at the expansion valve unit can be installed internal or external to indoor coil the indoor coil INDOOR EXPANSION VALVE Remove the field provided fitting that temporarily 1 2 Turn INSTALLATION reconnected the liquid line to the indoor unit s Uncased Coil Shown distributor assembly TWO PIECE 8 4 PATCH PLATE LIQUID LINE STUB Install one of the provided Teflon rings around the UNCASED ORIFICE END EXPANSION stubbed end of the expansion valve and lightly COIL ONLY HOUSING VALVE lubricate the connector threads and expose surface of DISTRIBUTOR bs the Teflon ring with refrigerant oil ps TUBES Attach the stubbed end of the expansion valve to the liquid line orifice housing Finger tighten and use an appropriately sized wrench to turn an additional 1 2 turn clockwise as os illustrated in the figure above or 20 ft lb TEFLO Place the remaining Teflon washe
34. sting refrigerant using one of the following procedures IMPORTANT Some system configurations may contain higher than normal refrigerant charge due to either large internal coil volumes and or long line sets METHOD 1 Use this method if the existing outdoor unit is not equipped with shut off valves or if the unit is not operational and you plan to use the existing refrigerant to flush the system Remove all refrigerant from the existing system Check gauges after shutdown to confirm that the entire system is completely void of refrigerant METHOD 2 Use this method if the existing outdoor unit is equipped with manual shut off valves and you plan to use new refrigerant to flush the system The following devices could prevent full system charge recovery into the outdoor unit Outdoor unit s high or low pressure switches if applicable when tripped can cycle the compressor OFF Compressor can stop pumping due to tripped internal pressure relief valve Compressor has internal vacuum protection that is designed to unload the scrolls compressor stops pumping when the pressure ratio meets a certain value or when the suction pressure is as high as 20 psig Compressor suction pressures should never be allowed to go into a vacuum Prolonged operation at low suction pressures will result in overheating of the scrolls and permanent damage to the scroll tips drive bearings and internal seals Once the compressor cannot pump down to a lower
35. y Outdoor Coil Entering Air Temp Discharge Pressure Suction Pressure Refrigerant Charge Checked J Refrigerant Lines Leak Checked Properly Insulated Outdoor Fan Checked L Service Valves Fully Opened Caps Tight J Thermostat Voltage With Compressor Operating Calibrated Properly Set Level Page 20 506694 01 11 10
36. y nitrogen from the line set and indoor unit Reconnect the manifold gauge to the vacuum pump turn the pump on and continue to evacuate the line set and indoor unit until the absolute pressure does not rise above 500 microns 29 9 inches of mercury within a 20 minute period after shutting off the vacuum pump and closing the manifold gauge valves When the absolute pressure requirement above has been met disconnect the manifold hose from the vacuum pump and connect it to an upright cylinder of HCFC 22 refrigerant Open the manifold gauge valve 1 to 2 psig in order to release the vacuum in the line set and indoor unit 1 6 TURN Perform the following Close manifold gauge valves Shutoff HCFC 22 cylinder Reinstallservice valve cores by removing manifold hose from service valve Quickly install cores with core tool while maintaining a positive system pressure Replace stem caps and secure finger tight then tighten an additional one sixth 1 6 of a turn as illustrated Figure 11 Evacuating System Page 13 13ACD SERIES In the U S A wiring must conform with current local codes and the current National Electric Code NEC In Canada wiring must conform with current local codes and the current Canadian Electrical Code CEC Refer to the furnace or air handler installation instructions for additional wiring application diagrams and refer to unit SIZE CIRCUIT AND INSTALL DISCONNECT SWITCH Refer to the unit nameplat
37. ystem should be checked as follows Outdoor Unit 1 Outdoor unit fan motor is pre lubricated and sealed No further lubrication is needed N gt lt ELM N 175 77 189 79 203 81 218 82 234 83 251 85 269 86 287187 oO 2 Visually inspect all connecting lines joints and coils for evidence of oil leaks 3 Check all wiring for loose connections 4 Check for correct voltage at unit unit operating 5 Check amp draw on outdoor fan motor Motor Nameplate Actual 6 Inspect drain holes in coil compartment base and clean if necessary NOTE If insufficient cooling occurs the unit should be gauged and refrigerant charge should be checked Outdoor Coil Clean and inspect outdoor coil may be flushed with a water hose Ensure power is off before cleaning 152 73 164 75 177 77 192 78 208 79 225 80 243 80 261 81 280 82 299 83 320 83 152 68 165 71 178 73 193 76 208 78 224 80 239 81 258 82 276 83 294 85 313 86 NOTE It may be necessary to flush the outdoor coil more frequently if it is exposed to substances which are corrosive or which block airflow across the coil e g pet urine cottonwood seeds fertilizers fluids that may contain high levels of corrosive chemicals such as salts Sea Coast Moist air in ocean locations can carry salt which is corrosive to most metal Units that are located near the ocean require frequent

13ACD Installation Manual

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