Installation Instructions
Contents
1. View From Top UNIT BASE PAN TIEDOWN KNOCKOUT LOCATIONS in mm Dimension in mm A B Cc 35 X 35 889 X 889 9 1 8 231 8 6 9 16 166 7 28 7 16 722 3 A05177 Fig 2 Tiedown Knockout Locations Operating Ambient The minimum outdoor operating ambient in cooling mode is 55 F 12 78 C without low ambient cooling enabled and the maximum outdoor operating ambient in cooling mode is 125 F 51 67 C At line voltage of 208v or below and an outdoor ambient of 120 F 48 9 C and above the compressor operates in low stage On Evolution communicating systems ONLY low ambient cooling operation is possible at ambient as low as 0 F 17 78 C The maximum outdoor operating ambient in heating mode is 66 F 18 89 C on all models Elevate Unit A CAUTION UNIT OPERATION HAZARD Failure to follow this caution may result in equipment damage or improper operation Do not allow water and or ice to build up in base pan Elevate unit per local climate and code requirements to provide clearance above estimated snowfall level and ensure adequate drainage of unit A ae CAUTION UNIT OPERATION HAZARD Failure to follow this caution may result in equipment damage or improper operation Locate the unit in such a way that it is stable in all circumstances including adverse weather conditions In Long Line Applications Install Liquid Line Solenoid Valve LSV For refrig2. OATs104 F 40 C Bere Ea 289B024 8 72 9 35 11 90 289B036 9 06 10 23 11 90 289B048 9 91 11 04 11 90 289B060 10 83 11 70 11 90 NOTE For 289B models in low ambient cooling the PWM output for both high and low stage equals the value for low stage operation below 55 F 12 8 C In low ambient cooling below 55 F 12 78 C on 286B and 289B models the control board cycles the fan off and on Time Delays The unit time delays include e Five minute time delay to start cooling or heating operation when there is a call from the thermostat or user interface To bypass this feature momentarily short and release Forced Defrost pins e Five minute compressor re cycle delay on return from a brown out condition e Two minute time delay to return to standby operation from last valid communication with Evolution only e One minute time delay of outdoor fan at termination of cooling mode when outdoor ambient is greater than or equal to 100 F 37 78 C e Fifteen second delay at termination of defrost before the auxiliary heat W1 is de energized e Twenty second delay at termination of defrost before the outdoor fan is energized unless fan delay defeated e Thirty second compressor delay when quiet shift enabled e There is no delay between staging from low to high and from high to low capacity The compressor will change from low to high and from high to low capacity on the fly to meet the demand Co
3. the 24v DC compressor solenoid coil is de energized When the compressor is operating in high stage the 24v DC solenoid coil is energized The solenoid plug harness that is connected to the compressor has an internal rectifier that converts the 24v AC signal to 24v DC DO NOT INSTALL A PLUG WITHOUT AN INTERNAL RECTIFIER Unloader Test Procedure The unloader is the compressor internal mechanism controlled by the DC solenoid that modulates between high and low stage If it is suspected that the unloader is not working the following methods may be used to verify operation 1 Operate the system and measure compressor amperage Cycle the unloader on and off at 30 second plus intervals at the User Interface from low to high stage and back to low stage Wait 5 seconds after staging to high before taking a reading The compressor amperage should go up or down at least 20 percent 2 If the expected result is not achieved remove the solenoid plug from the compressor and with the unit running and the User Interface or thermostat calling for high stage test the voltage output at the plug with a DC voltmeter The read ing should be 24 volts DC 3 If the correct DC voltage is at the control circuit molded plug measure the compressor unloader coil resistance The resistance should be 32 to 60 ohms depending on com pressor temperature If the coil resistance is infinite much lower than 32 ohms or is grounded the compressor must be r
4. Check Charge Charged in high stage only Factory charge amount and desired subcooling are shown on unit rating plate for high stage Charging method is shown on information plate inside unit To properly check or adjust charge conditions must be favorable for subcooling charging Favorable conditions exist when the outdoor temperature is between 70 F and 100 F 21 11 C and 37 78 C and the indoor temperature is between 70 F and 80 F 21 11 C and 26 67 C Follow the procedure below Unit is factory charged for 15ft 4 57 m of lineset Adjust charge by adding or removing 0 6 oz ft 17 74 g m of 3 8 liquid line above or below 15ft 4 57 m respectively For standard refrigerant line lengths 80 ft 24 38 m or less allow system to operate in cooling mode at least 15 minutes If conditions are favorable check system charge by subcooling method If any adjustment is necessary adjust charge slowly and allow system to operate for 15 minutes to stabilize before declaring a properly charged system If the indoor temperature is above 80 F 26 67 C and the outdoor temperature is in the favorable range adjust system charge by weight based on line length and allow the indoor temperature to drop to 80 F 26 67 C before attempting to check system charge by subcooling method as described above If the indoor temperature is below 70 F 21 11 C or the outdoor temperature is not in the favorable range adjust charge for line set len
5. FAN 2 STAGE COIL HEAT PUMP ma Variable Speed 2 Stage THERMIDISTAT Thermidistat Furnace Heat Pump O H 5 U o E JA R y1 RVS Heat Stage 2 F 5 paj RVS Cooling m R Heat Stage1 WW1 f pma wi S REMOVE J2 wi Heat Stage 3 furnace Lowa JUMPER FOR Compressor Low wH HEAT STAGING Heat Cool Stage 1 Compressor High _Y 2_ 4 4 YN2tK R Y2 Heat Cool Stage 2 Fan T Z 46 Fan ot 24VAC Hot Heati q r F 24VAC Hot Heating L faRhL Ir erie es ot J REMOVE J1 FOR 24VAC Hot Cooling 24VAC Hot Cooling DEHUMIDIFY DHI4 MODES Dry Contact 1 Dry Contact 1 i R Dry Contact 2 Dry Contact 2 mgl rock re E c y a 24VAC Common N 24VAC Common ee Humidify Humidif S Humidifier Solenoid umidi Outdoor Air Tem Valve y Humidifier Solenoid gt ae A Outdoor Air Temp Valve N Remote Room Sensor Outdoor Sensor Remote Room Sensor Outdoor Sensor OAT RRS Com Remote Room i n Sensor i OAT RRS Com OAT RRS Remote Room ji Indicates connection may not be required available A08055 A10107 Fig 10 Thermidistat Models T6 PRH 01 or T6 NRH 01 Fig 11 Thermidistat Model T6 PRH 01 or T6 NRH 01 with Wiring with 2 Stage Heat Pump non communicating Variable Speed Furnace and 2 Stage Heat Pump non communicating User Interface Furnac
6. OAT and OCT faults will not be cleared The code will continue to be flashed The control is shipped with the brownout active The change in status is remembered until toggled to a new status A power down power up sequence will not reset the status it may be necessary to do the toggle twice to cycle to the desired state of the defeat 10 230V Line Power Disconnect Detection If there is no 230v at the compressor contactor s when the indoor unit is powered and cooling or heating demand exists the appropriate fault code is displayed Verify the disconnect is closed and 230v wiring is connected to the unit Compressor Voltage Sensing The control board input terminals labeled VS and L2 see Fig 6 are used to detect compressor voltage status and alert the user of potential problems The control continuously monitors the high voltage on the run capacitor of the compressor motor Voltage should be present any time the compressor contactor is energized and voltage should not be present when the contactor is de energized Contactor Shorted Detection If there is compressor voltage sensed when there is no demand for compressor operation the contactor may be stuck closed or there may be a wiring error The control will flash the appropriate fault code If the control senses the compressor voltage after start up and is then absent for 10 consecutive seconds while cooling or heating demand exists the thermal protector is open The c
7. and PE Professional Engineer Certification if required On rooftop applications mount on level platform or frame Place unit above a load bearing wall and isolate unit and tubing set from structure Arrange supporting members to adequately support unit and minimize transmission of vibration to building Consult local codes governing rooftop applications Roof mounted units exposed to winds above 5 mph may require wind baffles Consult the Service Manual Residential Split System Air Conditioners and Heat Pumps Using Puron Refrigerant for wind baffle construction NOTE Unit must be level to within 2 43 8 in ft 9 5 mm m per compressor manufacturer specifications Clearance Requirements When installing allow sufficient space for airflow clearance wiring refrigerant piping and service Allow 24 in 609 6 mm clearance to service end of unit and 48 in 1219 2 mm above unit For proper airflow a 6 in 152 4 mm clearance on 1 side of unit and 12 in 304 8 mm on all remaining sides must be maintained Maintain a distance of 24 in 609 6 mm between units Position so water snow or ice from roof or eaves cannot fall directly on unit On rooftop applications locate unit at least 6 in 152 4 mm above roof surface 3 8 in 9 53 mm Dia Tiedown Knockouts in Basepan 2 Places so o gt 5 8 E EG rar B c C1
8. and indoor airflow cooling and outdoor fan operation and outdoor coil in heating Control Fault If the outdoor unit control board has failed the control will flash the appropriate fault code see Table 5 The control board should be replaced Brown Out Protection If the line voltage is less than 187v for at least 4 seconds the appropriate compressor contactor and fan relay are de energized Compressor and fan operation are not allowed until voltage is a minimum of 190v The control will flash the appropriate fault code see Table 5 230V Brown Out Protection Defeated The brownout feature can be defeated if needed for severe noisy power conditions This defeat should always be a last resort to solving the problem Defeat is available on the User Interface setup screen available with SYSTXBBUIDO1 C or can be initiated through the forced defrost pins for non communicating systems as follows The brownout toggle is accomplished by sorting the defrost pins from power up with the OAT and OCT sensor connector removed After 3 seconds the status of the force defrost short and the OAT OCT as open will be checked If correct then the brownout will be toggled Status code 6 shows the brownout is disabled Status code 5 shows the brownout is active After the brownout defeat is set power down and reinstall the OAT OCT sensor and remove the short from the forced defrost pins As long as the short on the forced defrost remains the
9. coil sensor the sensors are out of range If the sensors are out of range the control will flash the appropriate fault code as shown in Table 5 The thermistor comparison is not performed during low ambient cooling or defrost operation Failed Thermistor Default Operation Factory defaults have been provided in the event of failure of outdoor air thermistor OAT and or outdoor coil thermistor OCT If the OAT sensor should fail low ambient cooling will not be allowed and the one minute outdoor fan off delay will not occur Defrost will be initiated based on coil temperature and time If the OCT sensor should fail low ambient cooling will not be allowed Defrost will occur at each time interval during heating operation but will terminate after 5 minutes 11 286B 289B 286B 289B OAT Thermistor must be locked in place with spheri cal nib end facing towards the front of the control box Fig 8 Outdoor Air Thermistor OAT Attachment If there is a thermistor out of range error defrost will occur at each time interval during heating operation but will terminate after 5 minutes Count the number of short and long flashes to determine the appropriate flash code Table 5 gives possible causes and actions related to each error OCT Thermistor must be secured tight on stub tube Fig 9 Outdoor Coil Thermistor OCT Attachment Status Code
10. current Locate disconnect within sight from and readily accessible from unit per Section 440 14 of NEC Route Ground and Power Wires Remove access panel to gain access to unit wiring Extend wires from disconnect through power wiring hole provided and into unit control box A WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death The unit cabinet must have an uninterrupted or unbroken ground 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 Connect Ground and Power Wires Connect ground wire to ground connection in control box for safety Connect power wiring to contactor as shown in Fig 5 DISCONNECT PER N E C AND OR LOCAL CODES CONTACTOR FIELD POWER O Gn ore O O A91056 Fig 5 Line Power Connections Connect Control Wiring Route low voltage control wires through control wiring grommet and connect leads to control board Connect to Evolution connections ABCD only when Evolution User Interface is available Standard non communicating thermostat connections are possible when you connect to standard thermostat connections R C W Y1 Y2 and O Refer to wiring label for further clarification General Information Use No 18 AWG color coded insulated 35 C minimum wire for all installations All wiri
11. next defrost interval 120 minutes e When defrost time 3 5 minutes the next defrost interval 90 minutes e When defrost time 5 7 minutes the next defrost interval 60 minutes e When defrost time gt 7 minutes the next defrost interval 30 minutes The control board accumulates compressor run time As the accumulated run time approaches the selected defrost interval time the control board monitors the coil temperature sensor for a defrost demand If a defrost demand exists a defrost cycle will be initiated at the end of the selected time interval A defrost demand exists when the coil temperature is at or below 32 F 0 C for 4 minutes during the interval The defrost cycle is terminated when the coil temperature reaches 65 F 18 33 C or 10 minutes has passed When OAT is gt 25 F 3 9 C defrost will occur in low or high stage as demanded by the thermostat or User Interface If OAT is lt 25 F 3 9 C defrost will occur in high stage only regardless of thermostat or User Interface demand and will terminate at 50 F 10 C coil temperature with a minimum of 2 5 minutes in defrost If the coil temperature does not reach 32 F 0 C within the interval the interval timer will be reset and start over e Upon initial power up the first defrost interval is defaulted to 30 minutes Remaining intervals are at selected times e Defrost is only allowed to occur below 50 F 10 C outdoor ambient temperature T
12. 286B 2 5 TONS 289B 2 5 TONS EVOLUTION SERIES 2 STAGE HEAT PUMP WITH PURON REFRIGERANT Installation Instructions SAFETY CONSIDERATIONS Improper installation adjustment alteration service maintenance or use can cause explosion fire electrical shock or other conditions which may cause death personal injury or property damage Consult a qualified installer service agency or your distributor or branch for information or assistance The qualified installer or agency must use factory authorized kits or accessories when modifying this product Refer to the individual instructions packaged with the kits or accessories when installing Follow all safety codes Wear safety glasses protective clothing and work gloves Use quenching cloth for brazing operations Have fire extinguisher available Read these instructions thoroughly and follow all warnings or cautions included in literature and attached to the unit Consult local building codes and current editions of the National Electrical Code NEC NFPA 70 In Canada refer to current editions of the Canadian electrical code CSA 22 1 Recognize safety information This is the safety alert symbol A When you see this symbol on the unit and in instructions or manuals be alert to the potential for personal injury Understand these signal words DANGER WARNING and CAUTION These words are used with the safety alert symbol DANGER identifies the most serious hazard
13. R WALL mE Ar wy y LIQUID TUBE Ar i SUCTION TUBE INSULATION THROUGH THE WALL a OSI INSULATION SUCTION TUBE HANGER STRAP AROUND SUCTION TUBE ONLY 0 Oo O Oo 1 25 4mm e a N MIN LIQUID TUBE SUSPENSION A07588 Fig 1 Connecting Tubing Installation Specifications for this unit in residential new construction market require the outdoor unit indoor unit refrigerant tubing sets metering device and filter drier listed in presale literature There can be no deviation Consult the Service Manual Air Conditioners and Heat Pumps Using Puron Refrigerant to obtain required unit changes for specific applications and for R 22 retrofit Check Equipment and Job Site Unpack Unit Move to final location Remove carton taking care not to damage unit Inspect Equipment File claim with shipping company prior to installation if shipment is damaged or incomplete Locate unit rating plate on unit corner panel It contains information needed to properly install unit Check rating plate to be sure unit matches job specifications Install on a Solid Level Mounting Pad If conditions or local codes require the unit be attached to pad tie down bolts should be used and fastened through knockouts provided in unit base pan Refer to unit mounting pattern in Fig 2 to determine base pan size and knockout hole location For hurricane tie downs contact distributor for details
14. Table 4 Winding Resistance Winding resistance at 70 F 20 F Winding 21 11 C 11 11 C 024 036 048 060 Start S C 1 40 1 29 1 52 0 60 Run R C 1 32 0 89 0 64 0 49 Systems Communication Failure If communication with the Evolution control is lost with the User Interface the control will flash the appropriate fault code See Table 5 Check the wiring to the User Interface and the indoor and outdoor units Model Plug Each control board contains a model plug The correct model plug must be installed for or the system to operate properly See Table 4 Table 5 Model Plug Information PIN RESISTANCE MODEL MODEL PLUG K ohms NUMBER NUMBER Pins 1 4 Pins 2 3 286BNA024 HK70EZ041 18 91 286BNA036 HK70EZ043 18 150 286BNA048 HK70EZ045 18 220 286BNA060 HK70EZ047 18 360 289BNA024 HK70EZ010 5 1 120 289BNA036 HK70EZ012 5 1 180 289BNA048 HK70EZ014 5 1 270 289BNA060 HK70EZ016 11 5 1 The model plug is used to identify the type and size of unit to the control On new units the model and serial numbers are input into the board s memory at the factory If a model plug is lost or missing at initial installation the unit will operate according to the information input at the factory and the appropriate error code will flash temporarily An RCD replacement board contains no model and serial information If the factory control board fails the
15. Thermal Cutout 3 Bota are and capacitor held in circuit too long if installed Compressor voltage sensed when no demand for compressor operation Contactor Shorted 9 exists Contactor may be stuck closed or there is a wiring error No 230V at 74 Compressor voltage not sensed when compressor should be starting Con Compressor tactor may be stuck open or there is a wiring error Low Stage 81 Thermal cutout occurs in three consecutive low high stage cycles Low Thermal Lockout stage locked out for 4 hours or until 24v power recycled High Stage 82 Thermal cutout occurs in three consecutive high low stage cycles High Thermal Lockout stage locked out for 4 hours or until 24v power recycled Low Pressure 83 Low pressure switch trip has occurred during 3 consecutive cycles Unit Lockout operation locked out for 4 hours or until 24v power recycled High Pressure 84 High pressure switch trip has occurred during 3 consecutive cycles Unit Lockout operation locked out for 4 hours or until 24v power recycled Sequence Compressor contactor is de energized and outdoor fan is energized for up to 15 minutes If demand still exists control will energize compressor contactor after 15 minute delay If fault is cleared unit will resume operation If fault still exists fan shuts off and error code continues to flash Control will attempt re start every 15 minutes Cycling low voltage defeats the 15 minute delay 13 286B 289B 286B 289B
16. ayed on the outdoor unit control board the most recent with the highest priority Crankcase Heater Operation The crankcase heater is energized during off cycle below 65 F 18 33 C Outdoor Fan Motor Operation The outdoor unit control energizes the outdoor fan any time the compressor is operating except for low ambient cooling operation The outdoor fan remains energized if a pressure switch or compressor overload should open Outdoor fan motor will continue to operate for one minute after the compressor shuts off when the outdoor ambient is greater than or equal to 100 F 37 78 C to reduce pressure differential for easier starting on next cycle On 286B models The outdoor fan motor is a PSC type A fan relay on the control board turns the fan off and on by opening and closing a high voltage circuit to the motor It does not change speeds between low and high stage operation On 289B models The outdoor fan is an ECM type The motor control is continuously powered with high voltage The motor speed is determined by electrical pulses provided by the PWM outputs on the control board The ECM motor RPM adjusts to outdoor conditions as described in Table 3 The PWM output can be measured between the PWM1 and PWM2 terminals on the circuit board with a volt meter set to DC volts Table 3 Outdoor Fan Motor PWM Outdoor Temp DC volts Tolerance 2 LOW STAGE HIGH STAGE LOW amp MODEL OATs104 F 40 C
17. be 400 psig DOT 4BA400 or DOT BW400 Puron refrigerant systems should be charged with liquid refrigerant Use a commercial type metering device in the manifold hose when charging into suction line with compressor operating Manifold sets should be 700 psig high side and 180 psig low side with 550 psig low side retard Use hoses with 700 psig service pressure rating Leak detectors should be designed to detect HFC refrigerant Puron refrigerant as with other HFCs is only compatible with POE oils Vacuum pumps will not remove moisture from oil Do not use liquid line filter driers with rated working pressures less than 600 psig Do not leave Puron refrigerant suction line filter driers in line longer than 72 hours Do not install a suction line filter drier in liquid line POE oils absorb moisture rapidly Do not expose oil to atmosphere POE oils may cause damage to certain plastics and roofing materials Wrap all filter driers and service valves with wet cloth when brazing A factory approved liquid line filter drier is required on every unit Do NOT use an R 22 TXV If indoor unit is equipped with an R 22 TXV or piston metering device it must be changed to a hard shutoff Puron refrigerant TXV Never open system to atmosphere while it is under a vacuum When system must be opened for service recover refrigerant evacuate then break vacuum with dry nitrogen and replace filter driers Evacuate to 500 microns prior to recharging Do no
18. default is OFF 2 The A C DIP switch setting determines airflow during high stage cooling operation Select the A C DIP switch setting corresponding to the available airflow shown in the furnace Installation Instructions that most closely matches the re quired airflow shown in the air conditioning Product Data for HIGH speed 3 The CF DIP switch setting determines airflow during low stage cooling operation Select the CF DIP switch setting corresponding to the available airflow shown in the furnace installation instructions that most closely matches the re quired airflow shown in the air conditioning Product Data for LOW speed If a higher or lower continuous fan speed is desired the continuous fan speed can be changed using the fan switch on the thermostat Refer to the furnace Installa tion Instructions for details of how to use this feature Airflow Selection for FV4C Fan Coils Using Non Comm Non Evolution Thermostats The FV4C provides high and low stage blower operation to match the capacities of compressor at high and low stage To select recommended airflow refer to FV4C Installation Instructions The FV4C utilizes an Easy Select control board that allows the installing technician to select proper airflows For adjustments to control board select appropriate HP SIZE and CFM ADJUST setting This fan coil has an adjustable blower off delay factory set at 90 sec for high and low stage blower operation When using a communicati
19. e and second stage cooling are satisfied the compressor will shut off When a 2 stage unit is operating at low stage system vapor suction pressure will be higher than a standard single stage system or high stage operation When the outdoor ambient is more the 100 F 37 8 C the outdoor fan will continue to run for one minute after compressor shuts off This reduces pressure differential for easier starting in the next cycle With non communicating non Evolution systems with first stage of cooling Y1 and O are powered on and with second stage of cooling Y1 Y2 and O are on For these systems with first stage of heating Y1 is on and for second stage of heating Y1 and Y2 are on When the reversing valve is energized O is powered on Communication and Status Function Lights For Evolution Control only Green communications COMM Light A green LED COMM light on the outdoor board see Fig 6 indicates successful communication with the other system products The green LED will remain OFF until communication is established Once a valid command is received the green LED will turn ON continuously If no communication is received within 2 minutes the LED will be turned OFF until the next valid communication Amber Status Light An amber colored STATUS light is used to display the operation mode and fault codes as specified in the troubleshooting section See Table 5 for codes and definitions NOTE Only one code will be displ
20. e or Fan Coil Communicating HP Humidifier A12094 Fig 12 Variable Speed Furnace or Fan Coil Wiring with Communicating 2 Stage HP LEGEND 24v Factory Wiring gt 24v Field Wiring i Field Splice Connection A09306 14 FINAL CHECKS IMPORTANT Before leaving job be sure to do the following 1 Ensure that all wiring is routed away from tubing and sheet metal edges to prevent rub through or wire pinching 2 Ensure that all wiring and tubing is secure in unit before CARE AND MAINTENANCE For continuing high performance and to minimize possible equipment failure periodic maintenance must be performed on this equipment Frequency of maintenance may vary depending upon geographic areas such as coastal applications See Owner s Manual for adding panels and covers Securely fasten all panels and covers information 3 Tighten service valve stem caps to 1 12 turn past finger tight 4 Leave Users Manual with owner Explain system operation and periodic maintenance requirements outlined in manual 5 Fill out Dealer Installation Checklist and place in customer file PURON R 410A REFRIGERANT QUICK REFERENCE GUIDE Puron refrigerant operates at 50 70 percent higher pressures than R 22 Be sure that servicing equipment and replacement components are designed to operate with Puron refrigerant Puron refrigerant cylinders are rose colored Recovery cylinder service pressure rating must
21. eep vacuum method is the most positive way of assuring a system is free of air and liquid water See Fig 4 LEAK IN 93500 SYSTEM 63000 a 62500 2000 VACUUM TIGHT 1300 TOO WET 1009 TIGHT 500 DRY SYSTEM 0 1 2 3 4 5 6 7 MINUTES A95424 Fig 4 Deep Vacuum Graph Final Tubing Check IMPORTANT Check to be certain factory tubing on both indoor and outdoor unit has not shifted during shipment Ensure tubes are not rubbing against each other or any sheet metal Pay close attention to feeder tubes making sure wire ties on feeder tubes are secure and tight Make Electrical Connections A WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death Do not supply power to unit with compressor terminal box cover removed Be sure field wiring complies with local and national fire safety and electrical codes and voltage to system is within limits shown on unit rating plate Contact local power company for correction of improper voltage See unit rating plate for recommended circuit protection device NOTE Operation of unit on improper line voltage constitutes abuse and could affect unit reliability See unit rating plate Do not install unit in system where voltage may fluctuate above or below permissible limits NOTE Use copper wire only between disconnect switch and unit NOTE Install branch circuit disconnect of adequate size per NEC to handle unit starting
22. eplaced Temperature Thermistors Thermistors are electronic devices which sense temperature As the temperature increases the resistance decreases Thermistors are used to sense outdoor air OAT and coil temperature OCT Refer to Fig 7 for resistance values versus temperature THERMISTOR CURVE 90 80 A 70 60 50 40 30 20 RESISTANCE KOHMS 10 0 0 20 40 60 80 100 120 17 77 6 67 4 44 15 56 26 67 37 78 48 89 TEMPERATURE F C A08054 Fig 7 Resistance Values Versus Temperature If the outdoor air or coil thermistor should fail the control will flash the appropriate fault code See Table 5 IMPORTANT The outdoor air thermistor and coil thermistor should be factory mounted in the final locations Check to ensure thermistors are mounted properly per Fig 8 and Fig 9 Thermistor Sensor Comparison The control continuously monitors and compares the outdoor air temperature sensor and outdoor coil temperature sensor to ensure proper operating conditions The comparison is e In cooling if the outdoor air sensor indicates 10 F 5 6 C warmer than the coil sensor or the outdoor air sensor indicates 20 F 11 C cooler than the coil sensor the sensors are out of range In heating if the outdoor air sensor indicates 35 F 19 4 C warmer than the coil sensor or the outdoor air sensor indicates 10 F 5 6 C cooler than the
23. erant piping arrangements with equivalent lengths greater than 80 ft 24 38 m and or when elevation difference between indoor and outdoor unit is greater than 20 ft 6 10 m follow all requirements of the Residential Piping and Long Line Guideline If required by the Residential Piping and Long Line Guideline install LSV kit part no KHALS0401LLS specifically designed for Puron refrigerant heat pumps LSV should be installed within 2 ft 0 61 m of outdoor unit with flow arrow pointing toward outdoor unit Follow the Installation Instructions included with accessory kit IMPORTANT Flow arrow must point toward outdoor unit Make Piping Connections amp WARNING PERSONAL INJURY AND UNIT DAMAGE HAZARD Failure to follow this warning could result in personal injury or death Relieve pressure and recover all refrigerant before system repair or final unit disposal Use all service ports and open all flow control devices including solenoid valves A CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result in equipment damage or improper operation Do not leave system open to atmosphere any longer than minimum required for installation POE oil in compressor is extremely susceptible to moisture absorption Always keep ends of tubing sealed during installation A CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result in equipment damage or improper operation If ANY refrigerant tub
24. ervice valve 5 Remove adapter tube from bag and connect threaded nut to liquid service valve Tighten nut finger tight and then with wrench tighten an additional 1 2 turn 15 ft Ib DO NOT OVERTIGHTEN Sweat Connections A CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result in equipment damage or improper operation e Use a brazing shield e Wrap service valves with wet cloth or heat sink material Use refrigerant grade tubing Service valves are closed from factory and ready for brazing After wrapping service valve with a wet cloth braze sweat connections using industry accepted methods and materials Consult local code requirements Refrigerant tubing and indoor coil are now ready for leak testing This check should include all field and factory joints Evacuate Refrigerant Tubing and Indoor Coil A an CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result in equipment damage or improper operation Never use the system compressor as a vacuum pump Refrigerant tubes and indoor coil should be evacuated using the recommended deep vacuum method of 500 microns The alternate triple evacuation method may be used See Service Manual for triple evacuation method Always break a vacuum with dry nitrogen Deep Vacuum Method The deep vacuum method requires a vacuum pump capable of pulling a vacuum of 500 microns and a vacuum gauge capable of accurately measuring this vacuum depth The d
25. gth above or below 15ft 4 57 m only Charge level should then be appropriate for the system to achieve rated capacity The charge level could then be checked at another time when the both indoor and outdoor temperatures are in a more favorable range NOTE If line length is beyond 80 ft 24 38 m or greater than 20 ft 6 10 m vertical separation See Long Line Guideline for special charging requirements Heating Check Chart Procedure To check system operation during heating cycle refer to the Heat Pump Charging Instructions label on outdoor unit This chart indicates whether a correct relationship exists between system operating pressure and air temperature entering indoor and outdoor units If pressure and temperature do not match on chart system refrigerant charge may not be correct Do not use chart to adjust refrigerant charge NOTE In heating mode check refrigerant charge only when pressures are stable If in doubt remove charge and weigh in correct refrigerant charge NOTE When charging is necessary during heating season charge must be weighed in accordance with unit rating plate 0 6 oz ft 17 74 g m of 3 8 in liquid line above or below 15 ft 4 57 m respectively EXAMPLE To calculate additional charge required for a 25 ft line set 25 ft 15 ft 10 ft X 0 6 oz ft 6 oz of additional charge MAJOR COMPONENTS 2 Stage Control Board The HP control board controls the following functions e High and l
26. he furnace Product Data to find the corresponding airflow If the airflow setting for high cooling needs to be switched from tap 5 to a different tap jumper a connection from the cool tap to the desired tap so that the Y2 signal is communicated via the cool tap to the desired speed tap NOTE Both Y1 and Y2 may be energized for high stage 2 The Y1 call for low stage cooling energizes the Fan tap on the control board The red wire from the fan tap is con nected to tap 1 on the motor Refer to the furnace Product Data to find the corresponding airflow If the airflow setting for low cooling needs to be switched from tap 1 to a differ ent tap jumper a connection from the Fan tap to the desired tap so that the Y1 signal is communicated via the Fan tap to the desired speed tap The Y1 setting will also govern the continuous fan airflow for the furnace Refer to the furnace literature for further details 286B 289B 286B 289B Airflow Selection for Variable Speed Furnaces non communicating The variable speed furnaces provide blower operation to match the capacities of the compressor during high and low stage cooling operation The furnace control board allows the installing technician to select the proper airflows for each stage of cooling Below is a summary of required adjustments See furnace installation instructions for more details 1 Turn SW1 5 ON for 400 CFM ton airflow or OFF for 350 CFM ton airflow Factory
27. he outdoor fan output ODF will remain off for 20 seconds after termination This delay will allow time for the system to capture the heat from the outdoor coil and reduce the steam cloud effect that may occur on transition from defrost to heating cycle The outdoor fan output OFF delay of 20 seconds may be defeated to enable the fan to energize immediately at the time of termination and 12 seconds prior to the reversing valve de energizing through the User Interface setup screen available with SYSTXBBUIDO1 C or forced defrost pins as follows The ODF fan delay defeat can be toggled by shorting the forced defrost pins for gt 15 seconds while in the standby mode status LED on solid The LED will start to flash when the toggle has taken place 8 Status code 4 shows the fan delay defeat is active no delay Status code 3 shows that it is not active 20 second delay The code will continue to be displayed until after the short is removed There is a 5 second wait before the code is cancelled once the short is removed The code that is flashing will finish before going back to solid LED The control is shipped with the ODF fan delay defeat NOT active The change in status is remembered until toggled to a new status A power down power up sequence will not reset the status It may be necessary to do the toggle twice to cycle to the desired state of the defeat Defrost Hold On a non communicating system if the thermos
28. ing is buried provide a 6 in vertical rise at service valve Refrigerant tubing lengths up to 36 in 914 4 mm may be buried without further special consideration Do not bury lines longer than 36 in 914 4 Outdoor units may be connected to indoor section using accessory tubing package or field supplied refrigerant grade tubing of correct size and condition For tubing requirements beyond 80 ft 24 38 m substantial capacity and performance losses can occur Following the recommendations in the Residential Piping and Long Line Guideline will reduce these losses Refer to Table 1 for field tubing diameters Refer to Table 2 for accessory requirements Outdoor Unit Connected to Factory Approved Indoor Unit Outdoor unit contains correct system refrigerant charge for operation with factory approved AHRI rated indoor unit with highest sales volume when connected by 15 ft 4 57 m of field supplied or factory accessory tubing and factory supplied filter drier Check refrigerant charge for maximum efficiency NOTE If the indoor furnace coil width is more than the furnace casing width refer to the indoor coil Installation Instructions for transition requirements Table 1 Refrigerant Connections and Recommended Liquid and Vapor Tube Diameters in LIQUID RATED VAPOR ae berated Connection Tube Diameter Diameter Diameter 024 3 8 3 4 314 036 3 8 7 8 723 048 3 8 7 8 1 1 8 060 3 8 7 8 1 1 8 U
29. lves 2 Close electrical disconnects to energize system 3 Set room thermostat or User Interface at desired temperat ure Be sure set point is below indoor ambient temperature and is set low enough to energize desired stage 4 Set room thermostat or User Interface to HEAT or COOL and fan control to AUTO or ON as desired Wait for appro priate time delay s Operate unit for 15 minutes Check re frigerant charge NOTE Systems using only a non communicating non Evolution thermostat Bryant electronic thermostats are equipped with a 15 minute staging timer This timer prevents the two stage system from operating at high stage until unit has been operating in low stage for 15 minutes unless there is at least a 5 F 2 8 C difference between room temperature and thermostat set point To force high stage after a minimum of 2 minutes in low stage adjust the set point at least 5 F 42 8 C below room ambient System Functions And Sequence Of Operation The 286B 289B models utilize either an Evolution Communicating User Interface or a 2 stage heat pump thermostat With a call for first stage cooling the outdoor fan and low stage compressor are energized If low stage cannot satisfy cooling demand high stage is energized by the second stage of indoor thermostat After second stage is satisfied the unit returns to low stage operation until first stage is satisfied or until second stage is required again When both first stag
30. model plug must be transferred from the original board to the replacement board for the unit to operate NOTE The model plug takes priority over factory model information input at the factory If the model plug is removed after initial power up the unit will operate according to the last valid model plug installed and flash the appropriate fault code temporarily Pressure Switch Protection The outdoor unit is equipped with high and low pressure switches If the control senses the opening of a high or low pressure switch it will respond as follows 1 De energize the compressor contactor 2 Keep the outdoor fan operating for 15 minutes 3 Display the appropriate fault code see Table 5 4 After a 15 minute delay if there is a call for cooling or heat ing and LPS or HPS is reset the compressor contactor is energized 5 If LPS or HPS has not closed after a 15 minute delay the outdoor fan is turned off If the open switch closes anytime after the 15 minute delay then resume operation with a call for cooling or heating 6 If LPS or HPS trips 3 consecutive cycles the unit operation is locked out for 4 hours 7 In the event of a high pressure switch trip or high pressure lockout check the refrigerant charge outdoor fan operation and outdoor coil in cooling for airflow restrictions or in door airflow in heating 8 In the event of a low pressure switch trip or low pressure lockout check the refrigerant charge
31. mpressor Operation The basic scroll design has been modified with the addition of an internal unloading mechanism that opens a by pass port in the first compression pocket effectively reducing the displacement of the scroll The opening and closing of the by pass port is controlled by an internal electrically operated solenoid The modulated scroll uses a single step of unloading to go from full capacity to approximately 67 capacity A single speed high efficiency motor continues to run while the scroll modulates between the two capacity steps Modulation is achieved by venting a portion of the gas in the first suction pocket back to the low side of the compressor thereby reducing the effective displacement of the compressor Full capacity is achieved by blocking these vents thus increasing the displacement to 100 A DC solenoid in the compressor controlled by a rectified 24 volt AC signal in the external solenoid plug moves the slider ring that covers and uncovers these vents The vent covers are arranged in such a manner that the compressor operates at approximately 67 capacity when the solenoid is not energized and 100 capacity when the solenoid is energized The loading and unloading of the two step scroll is done on the fly without shutting off the motor between steps NOTE 67 compressor capacity translates to approximately 75 cooling or heating capacity at the indoor coil The compressor will always start unloaded and
32. necessary turns and bends 4 Leave some slack between structure and unit to absorb vi bration 5 When passing refrigerant tubes through the wall seal open ing with RTV or other pliable silicon based caulk See Fig 1 6 Avoid direct tubing contact with water pipes duct work floor joists wall studs floors and walls 7 Do not suspend refrigerant tubing from joists and studs with a rigid wire or strap which comes in direct contact with tubing See Fig 1 8 Ensure that tubing insulation is pliable and completely sur rounds vapor tube 9 When necessary use hanger straps which are 1 in wide and conform to shape of tubing insulation See Fig 1 10 Isolate hanger straps from insulation by using metal sleeves bent to conform to shape of insulation When outdoor unit is connected to factory approved indoor unit outdoor unit contains system refrigerant charge for operation with AHRI rated indoor unit when connected by 15 ft 4 57 m of field supplied or factory accessory tubing For proper unit operation check refrigerant charge using charging information located on control box cover and or in the Check Charge section of this instruction IMPORTANT Maximum liquid line size is 3 8 in OD for all residential applications including long line applications IMPORTANT Always install the factory supplied liquid line filter drier Obtain replacement filter driers from your distributor or branch 286B 289B OUTDOOR WALL INDOO
33. ng Evolution control dipswitch adjustments are not necessary Airflows are determined by Evolution Control setup The fan coil is the FE4A For other combinations of equipment consult Product Data Digest Install Accessories Refer to the individual instructions packaged with kits or accessories when installing When using a communicating control with the fan coil or the furnace dip switch adjustments are not necessary The outdoor unit configuration and the indoor airflows are determined by communicating control setup Start Up A CAUTION UNIT OPERATION AND SAFETY HAZARD Failure to follow this caution may result in minor personal injury equipment damage or improper operation Observe the following 1 Do not overcharge system with refrigerant 2 Do not operate unit in a vacuum or at negative pressure 3 Do not disable low pressure switch 4 Dome temperatures may be hot A CAUTION PERSONAL INJURY HAZARD Failure to follow this caution may result in personal injury Wear safety glasses protective clothing and gloves when handling refrigerant A CAUTION ENVIRONMENTAL HAZARD Failure to follow this caution may result in environmental damage Federal regulations require that you do not vent refrigerant to the atmosphere Recover during system repair or final unit disposal Follow these steps to properly start up the system 1 After system is evacuated fully open liquid and vapor ser vice va
34. ng must be NEC Class 1 and must be separated from incoming power leads Use furnace transformer fan coil transformer or accessory transformer for control power 24v 40va minimum The outdoor unit requires a minimum of 27va 24vac control power Final Wiring Check IMPORTANT Check factory wiring and field wire connections to ensure terminations are secured properly Check wire routing to ensure wires are not in contact with tubing sheet metal etc Compressor Crankcase Heater Furnish power to crankcase heater a minimum of 24 hr before starting unit To furnish power to heater only set thermostat to OFF and close electrical disconnect to outdoor unit Airflow Setup for Evolution Control Furnace or FE Fan Coil communicating When using an Evolution User Interface airflow is automatically selected based on equipment size See User Interface Installation Instructions for available adjustments Airflow Selections ECM Furnaces non commu nicating The ECM Furnaces provide blower operation to match the capacities of the compressor during high and low stage cooling operation Tap selections on the furnace control board enable the installing technician to select the proper airflows for each stage of cooling Below is a brief summary of the furnace airflow configurations 1 The Y2 call for high stage cooling energizes the Cool tap on the control board The grey wire from cool tap is connec ted to tap 5 on the motor Refer to t
35. nits are rated with 25 ft 7 6 m of lineset See Product Data sheet for performance data when using different size and length linesets Notes 1 Do not apply capillary tube or fixed orifice indoor coils to these units 2 For Tubing Set lengths between 80 and 200 ft 24 38 and 60 96 m horizontal or 20 ft 6 1 m vertical differential 250 ft 76 2 m Total Equivalent Length refer to the Residential Piping and Longline Guide line Air Conditioners and Heat Pumps using Puron refrigerant Table 2 Accessory Usage 286B 289B REQUIRED FOR REQUIRED FOR SEA LOW AMBIENT COOLING REQUIRED FOR LONG LINE ACCESSORY APPLICATIONS APPLICATIONS avin Hin D Below 55 F 12 8 C Compressor Start Assist No Yes No Crankcase Heater Standard Standard Standard Standard with Evolution Control Evaporator Freeze Protection Low Ambient not allowed with non No No communicating thermostat Liquid Line Solenoid Valve No Yes No Standard with Evolution Control Low Ambient Control Low ambient not allowed with non No No communicating thermostat Puron Refrigerant Balance Port Hard ShutOff TXV Yest Yest Yest Support Feet Recommended No Recommended For tubing set lengths between 80 and 200 ft 24 38 and 60 96 m horizontal or 20 ft 6 10 m vertical differential total equivalent length refer to the Long Line Guideline Air Conditioners and Heat Pumps using Puron Refrigerant t Requi
36. ontrol de energizes the compressor contactor for 15 minutes but continues to operate the outdoor fan The control Status LED will flash the appropriate code shown in Table 5 After 15 minutes with a call for low or high stage cooling or heating the compressor contactor is energized If the thermal protector has not re set the outdoor fan is turned off If the call for cooling or heating continues the control will energize the compressor contactor every 15 minutes If the thermal protector closes at the next 15 minute interval check the unit will resume operation If the thermal cutout trips for three consecutive cycles then unit operation is locked out for 4 hours and the appropriate fault code is displayed No 230V at Compressor Contactor If the compressor voltage is not sensed when the compressor should be starting the appropriate contactor may be stuck open or there is a wiring error The control will flash the appropriate fault code Check the contactor and control box wiring Troubleshooting units for proper switching between low amp high stages Check the suction pressures at the service valves Suction pressure should be reduced by 3 10 when switching from low to high capacity Compressor current should increase 20 to 45 when switching from low to high stage The compressor solenoid when energized in high stage should measure 24vac across pin numbers PL5 1 HI and PL5 4 T1 When the compressor is operating in low stage
37. ow stage compressor contactor operation e Outdoor fan motor operation e Reversing valve operation e Defrost operation e Low ambient cooling e Crankcase heater operation e Compressor external protection e Pressure switch monitoring e Time Delays 286B 289B 286B 289B Field Connections On non communicating non Evolution system the two stage control receives 24vac low voltage control system inputs through the R C Y1 Y2 and O connections located at the bottom of the control board see Fig 6 On a non communicating system output W1 is connected at the bottom of the control board for auxiliary heat For a communicating system use the ABCD Evolution connections Two Stage Compressor The two stage compressor contains motor windings that provide 2 pole 3500 RPM operation Compressor Internal Relief The compressor is protected by an internal pressure relief IPR which relieves discharge gas into the compressor shell when differential between suction and discharge pressure exceeds 550 625 psi The compressor is also protected by an internal overload attached to motor windings Compressor Control Contactor The contactor has a 24volt coil The electronic control board controls the operation of the contactor TROUBLESHOOTING If the compressor fails to operate with a cooling call the table below Resistance table can be used to verify if there is any damage to the compressor windings causing system malfunction
38. p Check refrigerant charge outdoor fan operation Switch Open and coils for airflow restrictions Low Pressure Switch or Dis 32 Low pressure switch or discharge temperature switch trip Check refrigerant charge Temp charge and indoor air flow Switch Open Control Fault 45 Outdoor unit control board has failed Control board needs to be replaced Line voltage lt 187v for at least 4 seconds Compressor and fan operation Brown Out 230 v 46 not allowed until voltage gt 190v Verify line voltage There is no 230v at the contactor when indoor unit is powered and cooling No 230v at Unit 47 heating demand exists Verify the disconnect is closed and 230v wiring is connected to the unit Outdoor Air Temp 53 Outdoor air sensor not reading or out of range Ohm out sensor and check Sensor Fault wiring Outdoor Coil x E Sensor Fault 55 Coil sensor not reading or out of range Ohm out sensor and check wiring Thermistors out of 56 Improper relationship between coil sensor and outdoor air sensor Ohm out range sensors and check wiring Compressor operation detected then disappears while low stage demand Low Stage gt a Ts exists Possible causes are internal compressor overload trip or start relay Thermal Cutout oe hand a and capacitor held in circuit too long if installed Compressor operation detected then disappears while high stage demand High Stage z A 72 exists Possible causes are internal compressor overload trip or start relay
39. perature 3 F 1 7 C or outdoor fan has been ON for 30 minutes Fan is turned off to allow refrigerant system to stabilize Fan is ON when outdoor coil temperature is less than outdoor air temperature 25 F 13 9 C or outdoor coil temperature is more than 80 F 26 7 C or if outdoor fan has been OFF for 30 minutes Fan is turned on to allow refrigerant system to stabilize Low pressure switch is ignored for first 3 minutes during low ambient start up After 3 minutes if LPS trips then outdoor fan motor is turned off for 10 minutes with the compressor running If LPS closes within 10 minutes then cooling continues with the outdoor fan cycling per the coil temperature routine listed above for the remainder of the cooling cycle If the LPS does not close within 10 minutes then the normal LPS trip response shut down cooling operation and generate LPS trip error will occur Defrost This control offers 5 possible defrost interval times 30 60 90 120 minutes or AUTO Defrost intervals are selected by dip switches on the unit control board or by the Evolution Control User Interface The Evolution Control selection overrides the control board dip switch settings Defrost interval times 30 60 90 and 120 minutes or AUTO are selected by the Evolution Control User Interface the dip switches are not used AUTO defrost adjusts the defrost interval time based on the last defrost time as follows e When defrost time lt 3 minutes the
40. r Reversing valve will energize and compressor will turn off for 30 seconds then turn back on to complete defrost At the end of the defrost cycle the reversing valve de energizes compressor will turn off for another 30 seconds and the fan will turn off for 40 seconds before starting in the heating mode Liquid Line Solenoid Accessory In heat pump long line applications a liquid line solenoid is required to control refrigerant migration in the heating mode The solenoid should be installed near the outdoor unit with the arrow facing the outdoor unit This is the direction of flow control See application manual for long line application details Accessory Liquid Solenoid with Evolution Communicating Control When using the Evolution Control the liquid line solenoid output is provided at the Y1 connection Connect the solenoid as shown in the wiring label diagram This is a 24vac output that is energized whenever the compressor is energized It closes in the compressor off mode to prevent refrigerant migration into the unit through the liquid line On Systems with Accessory Liquid Solenoid Using a Non Communicating Thermostat The liquid solenoid is connect to the Y1 and C terminal connections see Fig 6 and assumes that both Y2 and Y1 are energized by the thermostat during call for high stage operation The liquid solenoid closes in the compressor off mode to prevent refrigerant migration into the unit through the liquid line
41. red on all indoor units Standard on all new Puron refrigerant fan coils and furnace coils 286B 289B Install Liquid Line Filter Drier Indoor 4 WARNING UNIT OPERATION AND SAFETY HAZARD Failure to follow this warning could result in personal injury or equipment damage Puron refrigerant systems operate at higher pressures than standard R 22 systems Do not use R 22 service equipment or components on Puron refrigerant equipment Refer to Fig 3 and install filter drier as follows 1 Braze 5 in 127 mm liquid tube to the indoor coil 2 Wrap filter drier with damp cloth 3 Braze filter drier to above 5 in 127 mm liquid tube Flow arrow must point towards indoor coil 4 Connect and braze liquid refrigerant tube to the filter drier A CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result in equipment damage or improper operation Installation of filter drier in liquid line is required A05227 Fig 3 Liquid Line Filter Drier Refrigerant Tubing connection Outdoor Connect vapor tube to fitting on outdoor unit vapor service valves see Table 1 Install Adapter Tube 1 Remove plastic retainer holding outdoor piston in liquid service valve 2 Check outdoor piston size with matching number listed on unit rating plate 3 Locate plastic bag taped to unit containing adapter tube 4 Remove Teflon washer from bag and install on open end of liquid s
42. s Table 5 shows the status codes flashed by the amber status light Most system problems can be diagnosed by reading the status code as flashed by the amber status light on the control board The codes are flashed by a series of short and long flashes of the status light The short flashes indicate the first digit in the status code followed by long flashes indicating the second digit of the error code The short flash is 0 25 seconds ON and the long flash is 1 0 second ON Time between flashes is 0 25 seconds Time between short flash and first long flash is 1 0 second Time between code repeating is 2 5 seconds with LED OFF EXAMPLE 3 short flashes followed by 2 long flashes indicates a 32 code Table 5 shows this to be low pressure switch open 12 Table 6 TROUBLESHOOTING AMBER LED OPERATION FAULT FLASH POSSIBLE CAUSE AND ACTION CODE z On solid no Standby no call for unit operation None flash Normal operation Low Stage Cool Heat Operation None 1 pause Normal operation High Stage Cool Heat Operation None 2 pause Normal operation System Commu 16 Communication with User Interface lost Check wiring to User Interface nications Failure indoor and outdoor units Control does not detect a model plug or detects an invalid model plug Unit Invalid Model Plug 25 will not operate without correct model plug High Pressure 31 High pressure switch tri
43. s which will result in severe personal injury or death WARNING signifies hazards which could result in personal injury or death CAUTION is used to identify unsafe practices which would result in minor personal injury or product and property damage NOTE is used to highlight suggestions which will result in enhanced installation reliability or operation amp WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death Before installing modifying or servicing system main electrical disconnect switch must be in the OFF position and install a lockout tag There may be more than 1 disconnect switch Lock out and tag switch with a suitable warning label A CAUTION CUT HAZARD Failure to follow this caution may result in personal injury Sheet metal parts may have sharp edges or burrs Use care and wear appropriate protective clothing and gloves when handling parts Indoor Thermostat Control Options Model Evolution al ce Control Rica cae 286B 289B Yes INSTALLATION RECOMMENDATIONS NOTE In some cases noise in the living area has been traced to gas pulsations from improper installation of equipment 1 Locate unit away from windows patios decks etc where unit operation sound may disturb customer 2 Ensure that vapor and liquid tube diameters are appropriate for unit capacity 3 Run refrigerant tubes as directly as possible by avoiding un
44. stay unloaded for five seconds even when the thermostat is calling for high stage capacity 286B 289B 286B 289B VS VR L2 Li ODF CCH OT ETO CET Pf Iw Pwa2 es z O z O 90 i z D SR O F mp OO se pa i E oc i268 4 PLUG e soe SUPPLIED BY UTILITY PROVIDER A06525 o WW Po UF thn PWMi pwn LPs O n IO 90 i gt Q SR x O a MITE OO GE j ale Ez a MODEL PLUG Liquid Line Solenoid A06526 Fig 6 2 Stage Control Board GENERAL INFORMATION Evolution Controlled low ambient cooling This unit is capable of low ambient cooling down to 0 F 17 8 C without a kit ONLY when using an Evolution Control A low ambient kit is not required for Evolution controlled low ambient operation The Evolution Control provides an automatic evaporator freeze thermostat Low ambient cooling must be enabled in the User Interface setup Fan may not begin to cycle until about 40 F 4 4 C OAT Fan will cycle based on coil and outdoor air temperature Evolution controlled low ambient mode operates as follows e Fan is OFF when outdoor coil temperature is less than outdoor air tem
45. t vent Puron refrigerant into the atmosphere Do not use capillary tube coils Observe all warnings cautions and bold text All indoor coils must be installed with a hard shutoff Puron refrigerant TXV metering device 15 286B 289B 286B 289B 2012 Bryant Heating amp Cooling Systems 7310 W Morris St Indianapolis IN 46231 Printed in U S A Edition Date 02 12 Manufacturer reserves the right to discontinue or change at any time specifications or designs without notice and without incurring obligations 16 Catalog No II286 289B 03 Replaces Il286 289B 02
46. tat becomes satisfied Y1 or Y1 and Y2 before the defrost cycle is terminated the control will hold in defrost mode and finish the defrost cycle on the next call for heat On models with communicating Evolution Control defrost hold is not needed because the User Interface will complete the defrost cycle before shutting down the system Forced Defrost On a system with non communicating non Evolution control forced defrost can be initiated by manually shorting the 2 pin header labeled FORCED DEFROST see Fig 6 on the control board for 5 seconds then releasing On a system with communicating Evolution control forced defrost is initiated with the User Interface On all models during a Forced Defrost e If coil temperature is at defrost temperature of 32 F 0 C and outdoor air temperature is below 50 F 10 C a full defrost sequence will occur e If coil temperature or outdoor air temperature does not meet the above requirements an abbreviated 30 second defrost will occur Quiet Shift Quiet Shift is a field selectable defrost mode which may eliminate occasional noise that could be heard at the start of the defrost cycle and restarting of the heating cycle On a non communicating system this feature must be enabled by selecting the 3rd position of the 3 position dip switch For communicating Evolution systems it must be enabled at the User Interface When activated the following sequence of operation will occu
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