Ducane (HVAC) 2HP13/14 User's Manual
Contents
1. Factory charge for series is for 15 ft line sets and matched fan coil Before final adjustment is made to the refrigerant charge it is imperative that proper indoor airflow be established Airflow will be higher across a dry coil versus a wet coil Blower charts are calculated with a dry or wet coil basis Recommended airflow is 350 450 CFM per ton 12 000 Btuh through a wet coil Refer to indoor unit instructions for methods of determining air flow blower performance Cooling Cycle Charge Adjustment The optimum method for checking the charge is by weight However the following methods may be used to confirm the proper charge Units with Indoor Pistons Units installed with indoor pistons require charging with the superheat method The following procedure is valid when indoor airflow is within 20 of its rated CFM 1 Operate unit a minimum of 10 minutes before checking charge 2 Measure suction pressure by attaching a gage to suction valve service port Do not use compressor suction port Determine saturation temp from T P chart 3 Measure suction temperature by attaching an accurate thermistor type or electronic thermometer to suction line at service valve 4 Calculate superheat measured temp saturation temp 5 Measure outdoor air dry bulb temperature with thermometer 6 Measure indoor air entering indoor coil wet bulb temperature with a sling psychrometer 7 Compare superheatreadin2. Page 8 of 14 H P SINGLE PHASE WIRING DIAGRAM OUTDOOR F AN DUAL LA ON PURPLE KD DEFROST CONTROL THERMOSTAT P Seu a KO XXX mee ORANGE RED PEINE ia 565 EN ad COMPRESSOR COMPRESSOR CRANKCASE HEATER CONTACTOR 1 GRDUMD e pope EUER dr L Pe E i EVERS IMG LE s 9 HIGH PRESSURE SWITCH DEFROST VAL YE THERMOSTAT THERMOSTAT Li A 2z0B 230rbgrl Le l EOU1PMENT GROUNG bat 5 CONNECTION MUST JUMFERED WHEN PURPLE SWITCHED 15 NOT USED N NOTE WARN IRG FOR USE WiTH COPPER ELECTRIC SHOCK HAZARD CAM CAUSE INJURY OR CONDUCTORS ONLY DEATH UNIT NUST BE GROUNDED IM ACCORDANCE REFER TO UNIT RATING WITH MATIONAL AND LOCAL CODES COMPONENT CIRCUIT AMPACITY AND LIRE VOLTAGE FIELD INSTALLED Bt COMPRESSOR MAXIMUM CVERCURRENT CLASS 1 VOETAGE FIELD INSTALLED PROTECTION SIZE WOTOR OUTDOOR Fan C Ri HEATER COMPRESSOR CKi T CONTACTOR COMPRESSOR LL VALVE REVERSING 40 THERMOSTAT CRANKCASE 381 SWITCH LOW PRESSURE Super edes Fars Ho 10 08 7 Form go S37165 01 REV 506162 02 Issue 0847 Page 9 of 14 H P 3 PHASE WIRING DIAGRAM B4 OUTDOOR FAR A Lue 7 CI OUTDQOR FAM DEFROST CONTROL CAPAC TOR THE AMO
3. WARRANTY LIMITATIONS 1 This warranty is void if the covered equipment is removed from the original installation site 2 This warranty does not cover damage or defect resulting from a flood wind fire lightning mold or installation and operation in a corrosive atmosphere or otherwise in contact with corrosive material chlorine fluorine salt recycled waste water urine fertilizers or other damaging substances or chemicals accident or neglect or unreasonable use or operation of the equipment including operation of electrical equipment at voltages other than the range specified on the unit nameplate includes damages caused by brownouts modification change or alteration of the equipment except as directed in writing by Allied Air operation with system components indoor unit outdoor unit and refrigerant control devices which are not an ARI match or meet the specifications recommended by Allied Air operation of furnaces with return air temperatures of less than 60 F 16 C or operation of a furnace field installed downstream from a cooling coil use of contaminated or refrigerant not compatible with the unit The installation of replacement parts under the terms of this warranty does extend the original warranty period Allied Air makes no express warranties other than the warranty specified above All implied warranties including the implied warranties of merchantability and fitness for a particular purpos
4. 2 service valves After 5 minutes if the system fails to hold 500 microns orless check all connections for tight fit and repeat the evacuation procedure 4 Isolate the vacuum pump from the system by closing the shutoff valves on the gauge set Disconnect the vacuum pump Opening Service Valves After evacuation of the connecting lines remove the service valve cap and fully insert the hex wrench into the stem A back up wrench is required on the valve body to open the valve stem Back out counterclockwise until the valve stem just touches the coined edge Wrench sizes 3 8 service valve 3 16 Hex wrench 3 4 service valve 5 16 Hex wrench 7 8 service valve 5 16 Hex wrench Replace service valve cap and torque to 8 11 ft Ib on 3 8 valves 12 15 ft lb on 3 4 valves 15 20 ft lb on 7 8 valves Use backup wrench on valve body when torqueing valve cap Install Electrical Accessories Refer to the instructions packaged with the accessories Electrical Connections A WARNING ELECTRICAL SHOCK HAZARD Turn OFF electric power before connecting unit performing any maintenance or removing panels or doors More than one disconnect may be required to turn off all power FAILURE TO DO SO COULD RESULT IN BODILY INJURY OR DEATH Be sure to check alllocal codes to determine that the unit is installed accordance with local requirements Consult the National Electric Code for wire size requirements Use 60 C wire or higher A
5. 20 Zip Postal Code ALLIED Air Ente rprites 215 Metropolitan Drive West Columbia SC 29170 506162 02 Issue 0847 Page 13 of 14 NOTES 506162 02 Issue 0847 Page 14 of 14
6. Position so water snow or ice from roof or eaves cannot fall directly on unit structure lt gt discharge air ha es TRA Mounting slab must slope slightly away from building Not to exceed 1 4 per foot ground level Mc Aula DO LOCATE THE UNIT e With proper clearances on sides and top of unit e Ona solid level foundation or pad e minimize refrigerant line lengths DO NOT LOCATE THE UNIT e On brick concrete blocks or unstable surfaces e Near clothes dryer exhaust vents e Near sleeping area or near windows e Under eaves where water snow or ice can fall directly on the unit with clearance less than 2 ft from a second unit e with clearance less than 4 ft on top of unit Operating Ambient The minimum outdoor operating ambient in cooling mode is 55 F and the maximum outdoor operating ambient in cooling mode is 125 F The maximum outdoor operating ambient in heating mode is 66 F Indoor Coil Piston Selection The outdoor heat pump section must be matched to a factory approved indoor section It is mandatory that the installer ensure that the correct piston is installed in the indoor section If necessary remove the existing piston and replace it with the correct piston See indoor unit instructions for details of changing the piston Contact your distributor for accessory piston kits Indoor Cooling Piston Size 13 SEER Heat Pump Indoor Piston Sizes Unit Si
7. adequate refrigerant to handle 15 feet of refrigerant tubing NOTE DO NOT use any portion of the charge for purging or leak testing lt is mandatory that a thorough evacuation of the refrigeration lines and indoor coil be performed The liquid line and suction line service valves have been closed after final testing at the factory DO NOT disturb these valves until the lines have been leak checked and evacuated or the charge in the unit may be lost 1 Connect the vacuum pump to the center hose of the manifold gauge set the low pressure manifold gauge to the vapor service valve and the high pressure manifold gauge to the liquid service valve NOTE Unnecessary switching of hoses can be avoided and complete evacuation of all lines can be achieved by also connecting a branch hose from the manifold gauge center port to a cylinder of the proper refrigerant Provide a separate shut off valve to vacuum pump to avoid contaminating vacuum pump oil with refrigerant Page 4 of 14 2 The valves should be kept in the front seated closed position This will allow evacuation of the refrigeration lines and the indoor coil without disturbing the factory charge in the outdoor unit 3 Follow the vacuum pump manufacturer s instructions Allow the pump to operate until the system has been evacuated down to 300 microns Allow the pump to continue running for an additional 15 minutes Turn OFF the pump and leave the connections secured to the two
8. avoiding unnecessary turns and bends 4 Leave some slack between structure and unit to absorb vibration 5 When passing refrigerant tubes through the wall seal opening with RTV or other silicon based caulk 6 Avoid direct tubing contact with water pipes duct work floor joists wall studs floors walls and any structure 7T Donotsuspendrefrigerant tubing from joists and studs with a rigid wire or strap which comes in direct contact with tubing 8 Ensure that tubing insulation is pliable and completely surrounds vapor tube When outdoor unit is connected to factory approved indoorunit outdoorunit contains system refrigerant charge for operation with indoor unit of the same size when connected by 15 ft of field supplied tubing For proper unit operation check refrigerant charge using charging information located on control box cover IMPORTANT Maximum liquid line size is 3 8 in O D for all residential applications including long lines Outdoor Section Zoning ordinances may govern the minimum distance the condensing unit can be installed from the property line Install on a Solid Level Mounting Pad The outdoor section is to be installed on a solid foundation This foundation should extend a minimum of 2 inches beyond the sides of the outdoor section To reduce the possibility of noise transmission the foundation slab should NOT be in contact with or be an integral part of the building foundation Page 2 of
9. with sharp bends Tubing can kink very easily and if this occurs the entire tube length will have to be replaced Extra care at this time will eliminate future service problems It is recommended that vertical suction risers not be up sized Proper oil return to the compressor should be maintained with suction gas velocity Installation of Line Sets DO NOT fasten liquid or suction lines in direct contact with the floor or ceiling joist Use an insulated or suspension type of hanger Keep both lines separate and always insulate the suction line Long liquid line runs 30 feet or more in an attic will require insulation Route refrigeration line sets to minimize length DO NOT letrefrigerantlines come in direct contact with foundation When running refrigerant lines through the foundation or wall openings should allow for a sound and vibration absorbing material to be placed or installed between tubing and foundation Any gap between foundation or wall and refrigerant lines should be filled with a vibration damping material CAUTION If ANY refrigerant tubing is buried provide a 6 inch vertical rise at service valve Refrigerant tubing lengths up to 36 inches may be buried without further special consideration For lengths above 36 inches consult your local distributor Before making braze connections be sure all joints are clean Before heat is applied for brazing dry nitrogen should be flowing through the tubing to
10. 14 Elevate Unit CAUTION Accumulation of water and ice in base pan may cause equipment damage Elevate unit per local climate and code requirements to provide clearance above estimated snowfall level and ensure adequate drainage of unit Use snow stand in areas where prolonged freezing temperatures are encountered If conditions or local codes require the unit be attached to pad or mounting frame tie down bolts should be used and fastened through knockouts provided in unitbase pan Roof Top Installations Mount on level platform or frame 6 inches above roof surface Place unit above a load bearing wall and isolate unit and tubing set from structure Arrange supporting members to adequately support unit and minimize transmission of vibration to building Ensure roof structure and anchoring method is adequate for location Consult local codes governing rooftop applications Roof mounted units exposed to winds above 5 mph may require wind baffles to achieve adequate defrost A sheet metal baffle should be spaced 6 1 2 from the fall of the coil The height should cover the face of the coil and the length should be 6 from the access panel NOTE Unit must be level to within 2 3 8 in ft per compressor manufacturer specifications Clearance Requirements When installing allow sufficient space for airflow clearance wiring refrigerant piping and service For proper airflow quiet operation and maximum efficiency
11. 2HP13 14 amp 13 SPLIT SYSTEM HEAT PUMP INSTALLATION START UP INSTRUCTIONS IHOMEOWNERS INFORMATION MANUAL These instructions must be read and understood completely before attempting installation TABLE OF CONTENTS Salety Precautions s qu ERO X 2 Electrical Cobneellolis 55 omar ees ath dr Re de ue eed 5 Unit Location amp Installation 2 dua do Qi adt dad e dcn t AS saeco MAS 5 Rooftop Installation amp Recommendations 3 Star Up Procedute v ce em uq cede 6 Indoor Coil Piston Selecllbn xv gd d auge dede aq ode qoa 3 AGIUSUNG Charge scent 6 Refrigeration Line Sets 3 Beros tiie otto oer ant a Meee we ee aan yee 7 Installation of Line Sets s socie th choca o eb A dw a aa 4 Single Phase Wiring Diagram 9 Leak CHECK cs ideae teat Pa sd tos 4 Phase Wiring Diagram 10 Evacllalilg s Ghardimg 5 89 25 SEA HEURES EE MESS 4 Homeowner s Information 11 Opening Service Valve 5 These units are designed for use in residential and light commercial type buildings Heat Pumps may only be installed with indoor combinations listed in the Air Conditioning and Refrigeration Institute AR
12. 4SHP14 4SHP16 4SHP18 2HP13 2HP14 4HP13 Gas Furnaces G1N80 G1D80 G2D80 G1D91 G1D93 G2D93 G2D95 FPBB CG80 CG90 CG93 CG90UA Oil Furnaces LBR80 LBF80 LHF80 LUF80 RULF RLBR RLBU RLHF RLHR Electric Furnaces EFC EFV Evaporator Coils EC EU EH EM Air Handlers BCS2 RBCS2 Package Equipment 2PCE13 4PCE13 4PCE15 2PGE13 4PGE13 4PGE15 2PHP13 4PHP13 4PHP15 28G13 2SH13 2SA13 PARTS and COMPRESSOR COVERAGE The covered equipment and covered parts and compressor are warranted by Allied Air for a period of five 5 years from the date of the original installation when installed in a residential application which includes homes duplexes apartments and condominiums The covered equipment and covered parts and compressor are warranted by Allied Air for a period of one 1 year from the date of the original installation when installed in non residential applications If during this period a covered component fails because of a manufacturing defect Allied Air will provide a free replacement part to the owner through a licensed service contractor utilizing an Allied Air distributor You must pay shipping charges and all other costs of warranty service Allied Air will not pay labor involved in diagnostic calls or in removing repairing servicing or replacing parts Such cost may be covered by a separate warranty provided by the installer HEAT EXCHANGER EXTENDED COVERAGE All covered heat exchangers are warranted by Allied A
13. I Directory of Certified Products Inspect the unit for any damage before installation If damage is found notify the transportation company immediately and file a concealed damage claim A WARNING Installation or repairs made by unqualified persons can result in hazards to you and others Installation MUST conform with local building codes and with the National Electrical Code NFPA 70 ANSI C1 1993 or current edition and Canadian Electrical Code Part 1 CSA C22 1 CAUTION Improper installation adjustment alteration service or maintenance will void the warranty The qualified installer or agency must use factory authorized kits or accessories when added to this products Refer to the individual instructions included with the specific accessory kit 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 506162 02 Issue 0847 Page 1 of 14 NOTE TO INSTALLING DEALER These instructions and warranty are to be given to the owner or prominently displayed near the indoor air handler unit A WARNING This product and or the indoor unit that is matched with may contain fiberglass wool Disturbing the insulation during installation maintenance or repair will expose you to fiberglass wool dust Fiberglass wool is known to the State of California to cause cancer Fiberglass wool may also cause respiratory sk
14. S TAT COMPRESSOR COAT ACTOR HAI CRANKCASE HEATER 56 DEFROST THERMOS TAT 208 23076073 L L2 L3 i GROUND CORRECTION MUST BE JUNPERED WHER SWITCHED 15 NOT USED NOTE WARN HG FOR USE WITH COPPER ELECTRIC SHOCK HAZARD CAM CAUSE OA CONDUCTORS ONLY DEATH UNIT MUST BE GROUNDED ACCORDANCE REFER TO UNIT RATING WITH NATIONAL AND LOCAL CODES DESCRIPTION PLATE FOR MINIMUM m DENOTES OPTIOKAL COMPONENTS KEY COMPONENT CIRCUIT AMPACITY ANE a ME VOLTAGE FIELD INSTALLED COMPRESSOR MAXIMUM OVERCURRENT CLASS 1 VOLTAGE FIELD INSTALLED PROTECTION 511 APACITOR OUTDOOR FAN ONTROL DEFROST HEATER COMPRESSOR K1 1 CONTACTOR COMPRESSOR VALVE REVERSING SWITCH gt HIGH PRESSURE Sa S6 SWITCH DEFROST S40 TH RMOSTAT CRANKCASE MEY 8 84 MOTOR OUTDOOR EMCI HRI 331E66 01 REV A T f E 506162 02 Issue 0847 Page 10 of 14 Homeowner s Information A WARNING ELECTRICAL SHOCK HAZARD Turn OFF electric power to unit before performing any maintenance or removing panels or doors FAILURE TO DO SO COULD RESULT IN BODILY INJURY OR DEATH Heat Pump Operation Your new heat pump has several characteristics that you should be aware of e Heat pumps satisfy heating demand by delivering large amounts of warm air into the living space This is quite different from gas or oil fired furnace
15. al life to your unit Please consult your installing dealer for proper procedures in your geographic area IF YOUR SYSTEM DOES NOT WORK BEFORE REQUESTING A SERVICE CALL 1 Ensure thermostat is set below cooling or above heating room temperature and that the system lever is in the COOL HEAT or AUTO position 2 Inspect your return air filter If it is dirty your air conditioner may not function properly 3 Check indoor and outdoor disconnect switches Confirm circuit breakers are ON or that fuses have not blown Reset breakers replace fuses as necessary 4 Inspect the outdoor unit for clogged condenser coils grass cuttings leaves dirt dust or lint Ensure that branches twigs or other debris are not obstructing the condenser fan IF YOUR SYSTEM STILL DOES NOT OPERATE CONTACT YOU SERVICING DEALER Be sure to describe the problem and have the model and serial numbers of the equipment available If warranted replacements parts are required the warranty be processed through a qualified distribution location Page 12 of 14 ALLIED AIR ENTERPRISES EQUIPMENT LIMITED WARRANTY APPLIES IN U S A AND CANADA ONLY FAILURE TO MAINTAIN YOUR EQUIPMENT WILL VOID THIS WARRANTY COVERED EQUIPMENT The following Allied Air Enterprises heating and cooling equipment is covered by the Limited Warranty Condensing Units 2SCU13 4SCU13 4SCU14 4SCU16 4SCU18 2AC13 2AC14 4AC13 Heat Pumps 2SHP13 4SHP13 2SHP14
16. e are excluded to the extent to a period legally permissible Should such exclusion or limitation of the warranty be unenforceable such implied warranties are in any event limited to a period of one 1 year Liability for incidental and consequential damages is excluded Some states do not allow limitation of incidental damages so the limitations or exclusions may not apply to you Allied Air will not pay electricity or fuel costs or increases in electricity or fuel costs for any reason whatsoever including additional or unusual use of supplemental electric heat This warranty does not cover lodging expenses or labor charges Allied Air shall not be liable for any default or delay in performance under this warranty caused by any contingency beyond its control This warranty gives you specific legal rights and you may also have other rights which vary from state to state NOTE TO CUSTOMER Please complete information below and retain this warranty for your records and future reference Outside Unit Model Number 2 Serial Number Installed Date Furnace Air Handler eg i r rcc Serial Number il Installed Date Indoor Coil Model Number 2 LLL Serial Number Installed Date Installing Company Name o ooo LLL LL AL err Installing Company Address J 2 222 222 4404444 444 42 State Province J
17. fety Connect power wiring to contactor High voltage power connections to 3 phase models is made to Pig Tail leads with field supplied splice connectors Control Wiring The control voltage is 24 Vac NEC Class l insulated 18 AW G is required for control wiring For lengths longer than 150 feet contact your local distributor for technical service Ensure the room thermostat is properly installed per instructions shipped with room thermostat Generally the thermostat should not be exposed to sunlight drafts or vibration and should not be mounted on exterior walls Low voltage control wire connections should be made to the screw connection terminal board mounted on the defrost control as shown All low voltage control wiring must be separated from incoming power leads Page 5 of 14 Air Handler Thermostat Heat Pump COOL HEAT STAGE 1 0000453 Heat Pump Application with Electric Heat Emergency Heat heating heat pump If selector switch on thermostat is set to the emergency heat position the heat pump will be locked out of the heating circuit and all heating will be electric heat if applicable A jumper should be placed between W and E on the thermostat so that the electric heat control will transfer to the first stage heat on the thermostat This will allow the indoor blower to cycle on and off with the electric heat when the fan switch is in the AUTO position Add Jumper on Subbase Optional Start U
18. g at service valve with the chart located on control box cover 8 If unit has a higher suction line temperature than charted temperature add refrigerant until charted temperature is reached 9 If unit has a lower suction line temperature than charted temperature reclaim refrigerant until charted temperature is reached Page 6 of 14 10 Remove charge if superheat is low and add charge if superheat is high Required Subcooling NOTE If a TXV is installed on indoor unit a hard start kit is required on all models with reciprocating compressors Refer to the specification sheet for details Hard start kits are also recommended for areas with utility power lower than 208 Vac Units with Indoor TXV Units installed with TXV on indoor side require charging with the subcooling method 1 Operate unit a minimum of 10 minutes before checking charge 2 Measure liquid service valve pressure by attaching an accurate gage to service port Determine saturation temp from T P chart 3 Measure liquid line temperature by attaching an accurate thermistor type or electronic thermometer to liquid line near outdoor coil 4 Calculate subcooling saturation temp measured temp 5 Find the point where required subcooling temperature intersects measured liquid service valve pressure 6 Add refrigerant if subcooling is lower than table below Recover refrigerant if subcooling is high Heating Check Chart Procedure To chec
19. ided relays bypass the outdoor thermostats An amber indicating light simultaneously comes on to remind the homeowner that he is operating in the emergency heat mode Emergency heat is usually used during an outdoor unit shutdown but it should also be used following a power outage If power has been off for over an hour and the outdoor temperature is below 50 F 10 System should be left in the emergency heat mode at least six hours to allow the crankcase heater sufficient time to prevent compressor slugging This applies only to systems with crank case heaters Defrost System The defrost system includes two 2 components a defrost thermostat and a defrost control Defrost Thermostat The defrost thermostat is located on the outdoor coil of most models and on the liquid line between the check expansion valve and the distributor on R 4110A TXV equipped models When defrost thermostat senses 29 F 42 on R 410A TXV s or cooler the thermostat contacts close and send a signal to the defrost control board to start the defrost timing It also terminates defrost when the liquid line warms up to 60 F Defrost Control The defrost control board includes the combined functions of a time temperature defrost control defrost relay diagnostic LEDs and terminal strip for field wiring connections The control provides automatic switching from normal heating operation to defrost mode and back During compressor cycle the control accu
20. in and eye irritation To reduce exposure to this substance or for further information consult material safety data sheets available from your distributor A WARNING 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 Electrical shock can cause personal injury or death Safety Precautions Follow all safety codes Wear safety glasses and work gloves Use quenching cloth for brazing operations Have fire extinguisher available Read these instructions thoroughly and follow all warning or cautions attached to the unit 1 Always wear proper personal protection equipment 2 Always disconnect electrical power before removing panel or servicing equipment 3 Keep hands and clothing away from moving parts 4 Handle refrigerant with caution refer to proper MSDS from refrigerant supplier 5 Use care when lifting avoid contact with sharp edges 506162 02 Issue 0847 UNIT LOCATION amp INSTALLATION NOTE In some cases noise in the living area has been traced to gas pulsations from improper installation of equipment 1 Locate unit away form windows patios decks etc where unit operation sounds may disturb customer 2 Ensure that vapor and liquid tube diameters are appropriate to capacity of unit 3 Run refrigerant tubes as directly as possible by
21. ir for a period of twenty 20 years from the date of original installation Heat Exchanger Availability replacement heat exchanger is no longer available for a unit covered by this warranty Allied Air will allow a credit toward the purchase of an equivalent Allied Air furnace at the current suggested distributor s cost NOTE f the date of original installation cannot be verified the warranty period will be deemed to begin ninety 90 days after the date of manufacture EXCLUDED COMPONENTS The following components are not covered by this warranty cabinets cabinet pieces air filters driers refrigerant refrigerant line sets belts wiring fuses oil nozzles unit accessories and any parts not affecting unit operation CARE OF EQUIPMENT Your new Allied Air unit must be properly installed operated and maintained in accordance with the unit installation operation and maintenance instructions provided with each Allied Air unit Failure to provide maintenance per Allied Air instructions will void this warranty WARRANTY PROCEDURE When service or warranty parts are required 1 Call your local licensed service dealer or contractor 2 If the installing dealer is unable to provide warranty service check online at www alliedair com 3 Be prepared to furnish the following information a complete model and serial number b proof of required periodic maintenance installation date and location c an accurate description of the problem
22. k system operation during heating cycle refer to the Heating Check Chart located on back of control box cover 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 Charge must be rechecked again during the cooling season Cold Weather Application A cold weather accessory kit may be required for heat pumps operating at ambient conditions below 25 F Supplemental heat should be provided for these conditions due to the expected performance degeneration 506162 02 Issue 0847 SYSTEM OPERATION The outdoor unit and indoor blower cycle on demand from the room thermostat When the thermostat blower switch is in the ON position the indoor blower operates continuously Filter Drier The outdoor unit is equipped with a bi flow filter drier If replacementis necessary order new dryer according to the service parts manual Emergency Heat Function Room Thermostat An emergency heat function is designed into some room thermostats This feature is applicable when isolation of outdoor unit is required or when auxiliary electric heat is staged by outdoor thermostats When the room thermostat is placed in the emergency heat position the outdoor unit control circuit is isolated from power and field prov
23. lways provide ground connections to the outdoor unit Power supply must agree with rating on unit nameplate 506162 02 Issue 0847 Provide line voltage power supply to unit from a properly sized disconnect switch Route power and ground wires from disconnect switch to unit Line voltage connections are made atthe line side of the contactor in the control box of the outdoor unit Follow the appropriate wiring diagram attached to inside of the access panel Proper circuit protection recommendations are indicated on Unit Rating Plate Time delay fuses are required to prevent blowing due to starting current the current in rush when equipment starts is referred to as the Locked Rotor Amps or LRA A fuse of this kind properly sized will give maximum equipment protection Use copper wire only between disconnect switch and unit Remove access panel to gain access to unit wiring Extend wires from disconnect through power wiring hole provided and into unit control box Flexible conduit is required for the swing out control box feature A WARNING The unit cabinet must have an uninterrupted or unbroken ground to minimize personal injury if an electrical fault should occur The ground may consist of electrical wire or metal conduit when installed in accordance with existing electrical codes Failure to follow this warning can result in an electric shock fire or death Connect ground wire to ground connection in control box for sa
24. mulates compressor run times at 30 60 or 90 minute field adjustable Page 7 of 14 intervals If the defrost thermostat is closed when the selected compressor run time interval ends call for defrost the defrost relay is energized and defrost begins The factory setting is 60 minutes However if frost FIELD SELECT TIMING PINS TEST DIAGNOSTIC PINS ps2 LEDS COMPRESSOR DELAY PINS REVERSING VALVE rz 24V TERMINAL STRIP CONNECTIONS LOW PRESSURE SWITCH FACTORY FACTORY SHIPPED SHIPPED DEFROST THERMOSTAT HI PS 5 aa HIGH PRESSURE SWITCH OPTIONAL F0000452 accumulation is easily cleared the optimum efficiency setting is 90 minutes Outdoor Unit Defrost Control Board Defrost Control Timing Pins Each timing selection provides different accumulated compressor run time period for one defrost cycle This time period must occur before a defrost cycle is initiated The defrost interval can be adjusted to 30 T1 60 T2 or 90 T3 minutes The defrost timing jumper is factory installed to provided a 90 minute defrost interval If the timing selector jumper is not in place the control defaults to a 90 minute defrost interval The maximum defrost period is 14 minutes and cannot be adjusted A TEST option is provided for troubleshooting The TEST mode may be started any time the unit is in the heating mode and the defrost thermostat is closed or jumpered If the j
25. nding on the amount of moisture in the air inside your home water will trickle from the condensate drain of the cooling coil Thermostat Operation The wall mounted thermostat controls your air conditioner thermostat is available in various configurations from different manufacturers The 506162 02 Issue 0847 information below is typical for most thermostats Ask your dealer for specific information regarding the model of thermostat installed Temperature Setting Levers Most heat pump thermostats have 2 temperature selector levers one for heating and one for cooling Set the levers or dials to the desired temperature set points for both heating and cooling Avoid frequent temperature adjustment turning the unit off and back on before pressures equalize puts stress on the unit compressor On heat pump systems increasing your thermostat setting by more than 2 degrees may cause supplemental heaters to turn on reducing potential energy savings Fan Switch In AUTO or INT intermittent mode the blower operates only when the thermostat calls for heating or cooling This mode is generally preferred when humidity control is a priority The ON or CONT mode provides continuous indoor blower operation regardless of whether the compressor or auxiliary heat are operating This mode is required when constant air circulation or filtering is desired System Switch Set the system switch for heating cooling or auto opera
26. p Procedure 1 Check to ensure e Service valve and gage port caps are installed and tightened e Voltage supply at unit agrees with nameplate rating e Field wiring connections are tight and factory wiring has not been disturbed and are tight e Indoor fan motor is on correct speed tap 2 Setthermostat selector switch to OFF and fan control switch to Auto is so equipped 3 Close electrical disconnects to energize system 4 Setroom thermostat at desired temperature Be sure set point is below indoor ambient temperature 5 Setthe system switch of the thermostat on COOL or HEAT if applicable and fan switch for continuous operation ON or AUTO as desired There will be a 5 minute short cycle compressor delay on startup Operate unit for 15 20 minutes then check the system refrigerant charge 6 Adjust refrigerant charge per Adjusting Charge section 506162 02 Issue 0847 Adjusting Charge Factory charge is shown on the rating label located on the access panel All split system heat pumps are factory charged for 15 feet of connecting line set and matched indoor fan coil Nameplate refrigerant charge should initially be adjusted for line set lengths other than 15 feet For line sets shorter than 15 feet in length remove charge For line sets longer than 15 feet add charge Oil charge is sufficient for all line lengths Refrigeration Charge Adjustment Liquid Line Diameter Oz Per Linear Foot 3 8 6
27. prevent oxidation and scale formation on the inside of the tubing 506162 02 Issue 0847 The following is the recommended method for making braze connections at the refrigerant line connections 1 Debur and clean refrigerant tube end with emery cloth or steel brush Insert tubing into swage fitting connection W rap wet rags over valves to protect from heat Allow dry nitrogen to flow through refrigerant lines Braze joint using a suitable brazing alloy for copper to copper joints 6 Quench the joint and tubing with water using a wet rag Leave rag on fitting body and re wet with water to help cool area ua 5 Leak Check Refrigeration lines and indoor coil must be checked for leaks after brazing and before evacuation The recommended procedure is to apply a trace amount of vapor refrigerant approximately two ounces or 3 psig into the line set and indoor coil then pressurize with 150 psig of dry nitrogen Use a refrigerant leak detector to check all joints The system may also be checked for leaks using a halide torch or pressure and soapy solution After completion of leak check relieve all pressure from system before evacuation Evacuating And Charging Instructions NOTE Intentional release of CFC or HCFC refrigerant to the atmosphere violates Federal Law It may also violate State and Local Codes Check all Federal State and Local Codes before proceeding These outdoor units are pre charged at the factory with
28. ry installed During a single demand cycle the defrost control will lock out the unit after the fifth time that the circuit is interrupted by any pressure switch wired to the control board In addition the diagnostic LEDs will indicate a locked out pressure switch after the fifth occurrence of an open pressure switch The unit will remain locked out until power to the board is interrupted then re established or until the jumper is applied to the TEST pins for 0 5 seconds NOTE The defrost control board ignores input from the low pressure switch terminals as follows During the TEST mode During the defrost cycle During the 90 second start up period and for the first 90 seconds each time the reversing valve switches heat cool modes If the TEST pins are jumpered and the 5 minute delay is being by passed the LO PS terminal signal is not ignored during the 90 second start up period Diagnostic LEDS The defrost board uses 2 LEDs for diagnostics The LEDs flash a specific sequence according to the condition Defrost Control board Diagnostic LED Mode Green LED 052 LED DS1 No power to control OFF OFF Normal operation Simultaneous Slow FLASH power to control Alternating Slow FLASH lockout Low pressure switch fault Optional OFF Siow FLASH Low pressure switch lockout Optional OEF lon High pressure switch Siow FLASH lorr fault Optional High pressure Switch ED TERR lon id
29. s or an electric furnace which deliver lower volumes of considerably hotter air to heat the space e Do Not be alarmed if you notice frost on the outdoor coil in the winter months Frost develops on the outdoor coil during the heating cycle when temperatures are below 45 F An electronic control activates a defrost cycle lasting 5 to 15 minutes at preset intervals to clear the outdoor coil of the frost e During the defrostcycle you may notice steam rising from the outdoor unit This is a normal occurrence Thethermostat may engage auxiliary heat during the defrost cycle to satisfy a heating demand however the unit will run to normal operation atthe conclusion of the defrost cycle In case of extended power outage If the outdoor temperature is below 50 F and power to your outdoor unit has been interrupted for 6 hours or longer observe the following when restoring power to your heat pump system e Setthe room thermostat selector to the Emergency Heat setting to obtain temporary heat for a minimum of 6 hours This will allow system refrigerant pressures and temperatures enough time to return to a stabilized condition e n Emergency Heat mode all heating demand is satisfied by auxiliary heat heat pump operation is locked out After a 6 hour warm up period the thermostat can then be switched to the Heat setting and normal heat pump operation my resume e Heat pumps in the cooling mode remove humidity from your home Depe
30. t least monthly for free flow of drainage and clean if necessary Condenser Coils Grass cuttings leaves dirt dust lint from clothes dryers and fall off from trees can be drawn into coils by movement of the air Clogged condenser coils will lower the efficiency of your unit and could cause damage to the condenser 506162 02 Issue 0847 Periodically debris should be brushed from the condenser coils 4 WARNING SHARP OBJECT HAZARD Condenser coils have sharp edges Wear adequate body protection on body extremities e g gloves FAILURE TO FOLLOW THIS WARNING COULD RESULT IN BODILY INJURY Use a soft bristle brush with light pressure only DO NOT damage or bend condenser coil fins Damaged or bentfins may affect unit operation Painted Surfaces For maximum protection of the unit s finish a good grade of automobile wax should be applied every year In geographical areas where water has a high concentration of minerals calcium iron sulfur etc Itis recommended that lawn sprinklers not be allowed to spray the unit In such applications the sprinklers should be directed away from the unit Failure to follow this precaution may result in premature deterioration of the unit finish and metal components In sea coast areas special maintenance is required due to the corrosive atmosphere provided by the high salt concentration in ocean mists and the air Periodic washing of all exposed surfaces and coil will add addition
31. tion The auto mode allows the heat pump to automatically switch from heating mode to cooling mode to maintain predetermined comfort settings Many heat pump thermostats are also equipped with an emergency heat mode which locks out heat pump operation and provides temporary heat supplied by the auxiliary heat Indicating Light Most heat pump thermostats have an amber light which indicates when the heat pump is operating in the emergency heat mode Temperature Indicator The temperature indicator displays the actual room temperature Fan Control For fan control your thermostat may have a Fan Selection Switch that allows you to run the fan continuously or cycle it automatically with the heating or cooling system Switch the lever to ON for continuous operation and to AUTO for automatic cycling For maximum comfort satisfaction and continual air cleaning filtering constant fan operation is recommended Page 11 of 14 On models without a fan Selection Switch the fan will cycle with the outdoor unit Important System Information e Your system should never be operated without a clean air filter properly installed e Return air and supply air registers should be free from restrictions or obstructions to allow full flow of air Regular Maintenance Requirements Your system should be regularly inspected by a qualified service technician These regular visits may include among other things checks for e Motor operation Duct
32. umper is in the TEST position at power up the control will ignore the test pins When the jumper is placed across the TEST pins for 2 seconds the control will enter the defrost mode f the jumper is removed before an additional 5 second period has elapsed 7 seconds total the unit will remain in defrost mode until the defrost thermostat opens or 14 minutes have passed If the jumper is not removed until after the additional 5 second period has elapsed the defrost will terminate and the test option will not function again until the jumper is removed and re applied Compressor Delay The defrost board has a field selectable function to reduce occasional sounds that may occur while the unit is cycling in and out of the defrost mode The compressor will be cycled off for 30 seconds going in and out of the 506162 02 Issue 0847 defrost mode when the compressor delay jumper is removed NOTE The 30 second off cycle is not functional when jumpering the TEST pins Time Delay The timed off delay is 5 minutes long The delay help to protect the compressor from short cycling in case the power to the unit is interrupted or a pressure switch opens The delay is bypassed by placing the timer select jumper across the TEST pins for 0 5 seconds Pressure Switch Circuit The defrost control incorporates 2 pressure switch circuits The optional high pressure switch connects to the boards HI PS terminals The low pressure switch is facto
33. work air leaks Coil amp drainpan cleanliness indoor amp outdoor Electrical component operation amp wiring check Proper refrigerant level amp refrigerant leaks Proper airflow Drainage of condensate Air filter s performance Blower wheel alignment balance amp cleaning Primary amp secondary drain line cleanliness Proper defrost operation heat pumps There is some routine maintenance procedures you can do to help keep your system operating at peak performance between visits Air Filter Inspect air filters atleast monthly and replace or clean as required Disposable filters should be replaced Washable filters may be cleaned by soaking in mild detergent and rinsing with cold water Replace filters with the arrows pointing in the direction of airflow Dirty filters are the most common cause of poor heating cooling performance and compressor failures Indoor Coil If the system has been operated with a clean filter in place it should require minimal cleaning Use a vacuum cleaner and soft brush attachment to remove any accumulation of dust from the top and underside of the finned coil surface However perform this maintenance only when the coil is completely dry If the coil cannot be cleaned by this method call your dealer for service It may need a detergent solution and rinsing with water for cleaning which may require coil removal You should not attempt this yourself Condensate Drain During cooling season check a
34. ze 2HP13 4HP13 18 055 051 24 063 055 30 068 2059 36 26 2070 42 ove 2070 48 82 2082 60 o98 082 The evaporator coil may use an expansion valve TXV in place of piston NOTE Ifa TXV is installed a hard start kit is required on all models with reciprocating compressors See spec sheet for proper kit selection 14 SEER Heat Pump Models All 14 SEER heat pump models are only rated with TXV on the indoor side 14 SEER Heat Pump Indoor TXV Unit Size TXVKit 18 thru 36 TXV3 42 thru 48 Refrigeration Line Sets Use only refrigerant grade copper tubes Split systems may be installed with up to 50 feet of line set no iix more than 20 feet vertical without special consideration see long line set guidelines 506162 02 Issue 0847 Page 3 of 14 Recommended Liquid amp Vapor Tube Diameters In Unit LIQUID VAPOR FIELD SUPPLIED 7 8 X 1 1 8 CONNECTOR REQUIRED ON BOTH ENDS OF VAPOR TUBING It is important that no tubing be cut or seals broken until you are ready to actually make connections to the evaporator and to the condenser section DO NOT remove rubber plugs or copper caps from the tube ends until ready to make connections at evaporator and condenser Under no circumstances leave the lines open to the atmosphere for any period of time if so unit requires additional evacuation to remove moisture Be extra careful
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