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Bryant 587A User's Manual

1. Inspect air filter s at least once each month and replace disposable type or clean cleanable type at least twice dur ing each heating and cooling season or whenever the filter s becomes clogged with dust and lint Clean and lubricate the blower motor and wheel as follows for direct drive models unit sizes 018 048 1 Remove and disassemble blower assembly as follows a Remove blower access door b Disconnect blower motor leads from their termina tion points at motor Disconnect yellow lead from con trol box at capacitor Disconnect auxiliary limit switch leads at switch c Remove blower assembly from unit Be careful not to tear insulation in blower compartment d Ensure proper reas
2. 36 48 SPREADER BOTH SIDES Fig 8 Suggested Rigging IV FIELD CONNECTIONS A Condensate Disposal NOTE Ensure that condensate water disposal methods com ply with local codes restrictions and practices The 587A units dispose of condensate water through a in NPT drain fitting See Fig 3 and 4 for location Install a 2 in trap at the drain fitting to ensure proper drain age See Fig 9 Make sure that the outlet of the trap is at least 1 in lower than the unit drain pan connection to pre vent the pan from overflowing Prime the trap with water n NOTE Screw holes in the flue assembly and the unit flue panel are not symmetrically located ensure proper orienta tion when installing these components Refer to Fig 10 and install the vent cap as follows 1 Place vent cap assembly over flue panel orient screw holes in vent cap with holes in flue panel and secure vent cap in place by inserting the single screw on the right side of vent cap 2 Place the vent cap guard over the vent cap and orient holes in vent cap guard with holes in vent cap and flue panel Secure the entire assembly with the remaining
3. i Start and check the unit for proper cooling control operation as follows 1 Place room thermostat SYSTEM switch in OFF posi tion Observe that blower motor starts when FAN switch is placed in ON position and shuts down when FAN switch is placed in AUTO position 2 Place SYSTEM switch in COOL position and FAN switch in AUTO position Set cooling control below room tem perature Observe that compressor condenser fan and evaporator blower motors start Observe that cooling cy cle shuts down when control setting is satisfied Blower motor has off delay of approximately 45 seconds for unit sizes 018 042 and 30 seconds for unit sizes 048 and 060 on shutdown 3 When using an autochangeover room thermostat place both SYSTEM and FAN switches in AUTO positions Observe that unit operates in heating mode when tem perature control is set to call for heating above room temperature and operates in cooling mode when tem perature control is set to call for cooling below room temperature B Checking and Adjusting Refrigerant Charge The refrigerant system is fully charged with R 22 refriger ant tested and factory sealed NOTE Adjustment of the refrigerant charge is not required unless the unit is suspected of not having the proper R 22 charge For all applications the correct R 22 charge for the best performance is the charge that res
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6. 27 TROUBLESHOOTING 33 34 START UP CHECKLIST CL 1 SAFETY CONSIDERATIONS Cancels II 5874 18 1 II 587A 18 2 9 1 92 LESS vy Recognize safety information This is the safety alert symbol When you see this symbol on the unit and in instruc tions or manuals be alert to the potential for personal injury Understand the signal words DANGER WARNING and CAUTION These words are used with the safety alert sym bol Danger identifies the most serious hazards which will result in severe personal injury or death Warning indicates a condition that could result in personal injury Caution is used to identify unsafe practices which would result in minor personal injury or product and property dam
7. MODEL NUMBER NUMBER PRESSURE OF eg 587A in wg Orifice Heating Orifice Heating ORIFICES Input Drill Input Btuh f Size Btuh t 100 000 120 000 120 000 DERE SE 030080 036080 042080 E EE 96 000 96 000 UN ME 100 000 EST When a 587A unit is converted to propane the unit must be modified See kit instructions tBased on altitudes from sea level up to 2000 ft above sea level For altitudes above 2000 ft reduce input rating 496 for each 1000 ft above sea level In Canada from 2000 ft above sea level to 4 500 ft above sea level derate the unit 1096 16 F Airflow and Temperature Rise The heating section of each unit size is designed and ap proved for heating operation within the temperature rise range stamped on the unit rating plate Table 7 shows the approved temperature rise range for each unit and the air delivery cfm at various temperature rises The heating operation airflow must produce a temperature rise that falls within the approved range Refer to Indoor Airflow and Airflow Adjustments section on page 19 to adjust heating airflow when required G Safety Check of Limit Control The control shuts off the gas supply and energizes the circulating air blower motor if the furnace overheats The rec ommended method of checking this limit control is to grad ually block off the return air after the unit has been operat ing for a period of at least 5 minutes As soon as the limit
8. Watts MOTOR SPEED 018040 Low Low Low Low 030040 030060 036096 042096 587A AIR DELIVER MOTOR PULLEY TURNS OPEN EXTERNAL STATIC PRESSURE wg MOTOR RPM gt E o 1195 LO MIN 0 jN Qjo DIN N c e N o T 1125 E LO t 0 Se TIN 1055 N 19 N Watts hr N BRIN N 10 st e a LO g N 000 Btuh of rated cooling ca off may occur at airflows above less than 350 cfm for each 12 coil icing may occur at airflows below this point Water blow plied air filter pressure drop and wet coil pressure drop to obtain external static pressure available for ducting is based on pulley ratios and motor nameplate speed of 1580 rpm Air delivery values are without air filter and are for dry coil See Table 10 for wet coil pressure drop Deduct field 858 558 250 ELLs BRO 8 59 og c 5 459 BSc 5 5850 2 558 o Z ggg 5 gt 2595 gt ouco a 2 Sc 2590 EZ N 20 Table 8B Dry Coil Air Delivery Horizontal Discharge at 230 V 587A MOTOR AIR SPEED DELIVER 04 gt Wat E 470 4
9. 10 uoneouroeds 101 yonpoud 10 JepJo 12005 qno Aueduioooe snu 12845 pejejduio 2 jeuiqeo pue pews uo pesn eq qno Jool SSLON SLING TIYHS 7 11 NO 0350 3HV Su3OYd5 6 2 1 0 1175911 6 881 1 0 N d 2230 4008 8 298 01 2 904 09068 lee 6 2 G0 09068 8 704 6 069 wh 72 72271 702 090682 SALE 80S 8 1 8b 04 09068 57286 WAG 1 202 090682 P amp H ozLosowzes LL992 2401 0 10 090686 07285 pese 02 6S068E 622 ZOL 6S068E WEE Abbot 12 209 8 97 60688 1715 mele x jeme we 2E 9 069 o cse vE zzo text continued from page 2 If a plenum return is used on a downflow unit the return should be ducted through the roof deck to comply with appli cable fire codes A minimum clearance is not required around ductwork Cab inet return air static shall not exceed 0 25 in wg with economizer NOTE Connection may be made to roof curb before unit is set in place MAXIMUM ALLOWABLE Ze DIFFERENCE in Bc Fig 7 Unit Leveling Tolerances Ill RIG AND PLACE UNIT Inspect unit for transportation damage File any claim with transportation agency Keep upr
10. Reinstall flue choke Be sure all screws are in and tight 10 Clean and replace flue collector assembly making sure all screws are secure Replace inducer assembly Reconnect 2 wires to inducer motor Replace burner access door Turn on power and gas Set thermostat and check unit for proper operation Il REFRIGERANT CHARGE Adjustment of the refrigerant charge is not required unless the unit is suspected of not having the proper R 22 charge A superheat charging label is attached to the outside of the compressor access door The label includes a Field Super heat Charging Table and a Required Suction Tube Temper ature chart An accurate superheat thermocouple or thermistor type ther mometer a sling psychrometer and a gage manifold are re quired when using the superheat charging method for eval uating the unit charge Do not use mercury or small dial type thermometers they are not adequate for this type of measurement 521512 Proceed as follows 1 Remove caps from low and high pressure service fittings 2 Using hoses with valve core depressors attach low and high pressure gage hoses to low and high pressure ser vice fittings respectively 3 Star
11. 24 Clean and lubricate the blower motor and wheel as follows for belt drive models unit size 060 1 Remove blower assembly as follows a Remove blower access door from unit b Disconnect auxiliary limit switch leads as switch c Remove blower assembly and motor from unit Be care ful not to tear insulation in blower compartment Sup port assembly to prevent damage to motor leads 2 Lubricate motor as follows a Thoroughly clean all accumulations of dirt or grease from motor housing b Remove dust caps or plugs from oil ports located at each end of motor c Use a good grade of SAE 20 nondetergent motor oil and put one teaspoon 5cc 3 16 oz or 16 to 25 drops in each oil port d Allow time for oil to be absorbed by each bearing then wipe excess oil from motor housing e Replace dust caps or plugs in oil ports 3 Remove and clean blower wheel as follows a Remove blower belt then remove blower pulley b Remove blower shaft bearing locking collars c Loosen blower wheel setscrew then pull blower shaft from wheel d Remove screws holding cutoff plate then remove cut off plate e Lift wheel from housing When handling and or clean ing be sure not to disturb balance weights on blower wheel vanes f Remove caked on dirt from wheel and housing with a brush Remove lint and or dirt accumulations from wheel and housing with vacuum cleaner using soft brush attachment Remove grease and oil with
12. Adjust evaporator fan speed to meet jobsite conditions Ta bles 8A 8B 9A and 9B show fam rpm at motor pulley set tings for standard and alternate motors Refer to these ta bles to determine fan speed settings Fan motor pulleys are factory set for 3 turns open Check pul ley alignment and belt tension prior to start up NOTE Before adjusting fan speed make sure the new fan speed will provide an air temperature rise range as shown below AIR TEMP RISE RANGE F 587A UNIT SIZE 060080 060100 060120 20 50 30 60 35 65 To change fan speed 1 Shut off unit power supply 2 Loosen belt by loosening fan motor mounting nuts 3 Loosen movable pulley flange setscrew see Fig 17 4 Screw movable flange toward fixed flange to increase speed and away from fixed flange to decrease speed Increas ing fan speed increases load on motor Do not exceed 1500 rpm 5 Set movable flange at nearest keyway of pulley hub and tighten setscrew See Tables 8A 8B 9A and 9B for speed change for each full turn of pulley flange To align fan and motor pulleys 1 Loosen fan pulley setscrews 2 Slide fan pulley along fan shaft 3 Make angular alignment by loosening motor from mounting To adjust belt tension 1 Loosen fan motor mounting nuts 2 Slide motor mounting plate away from fan scroll for proper belt tension 2 deflection with one finger and tighten mounting nuts Tension can be applied using Ys in dri
13. terminal of the thermostat The 24 v energizes the TDR and after a delay of approximately 30 to 60 seconds the normally open set of contacts close energizing the indoor fan motor The 24 v also energizes IDR closing the normally open set of con tacts starting the induced draft motor As the induced draft motor comes to speed it creates a negative pressure in the collector box of the burner compartment The pressure switch senses this negative pressure which closes the normally open set of contacts when a negative pressure of approximately 29 in wg is reached This switch closure allows the 24 v to pass through the safety chain auxiliary limit switch ALS limit switch LS and pressure switch PS energizing the TH terminal of the ignition control ICP If a rollout oc curs the rollout switch will open and deenergize the heater relay The normally open set of contacts will break the safety chain to the ignition control With the TH terminal ener gized the pilot valve of the main gas valve is energized im mediately and gas is allowed to flow to the pilot simultaneously the ignition circuit of the ICP is energized creating a spark and igniting the pilot If the pilot fails to ignite after a period of 2 minutes both the pilot valve and spark will cease for a period of 5 minutes When the 5 minutes have elapsed the pilot valve and spark will energize for another try for igni tion If the pilot fails to light again t
14. 08 162 194 70 08 16 2 194 70 08 183 211 100 08 183 21 1 100 0 8 188 22 6 32 16 100 15 245 295 40 10 75 15 245 29 5 40 10 75 15 250 31 0 40 8 100 1 5 265 320 50 8 100 1 5 265 320 50 8 100 15 270 335 50 8 100 NES a 5 1 In compliance with NEC requirements for multimotor and combination load equip ment refer to NEC Articles 430 and 440 the overcurrent protective device for ani shall be fuse or HACR breaker The CGA units may be fuse or circuit reaker 2 Minimum wire size is based on 60 C copper wire If other than 60 wire is used or if length exceeds wire length in table determine size from NEC 3 Voltage drop of wire must be less than 2 of rated voltage 11 Unit Sizes 048 060 Alternate Power Entry Location Knockouts Located Near Control Box 1 Connect ground lead to chassis ground connection when using separate ground wire 2 Remove leads from terminals 11 and 23 These are the leads that go to the standard power entry Pull these wires out of the main control box and secure to compres sor wires using field supplied wire tie Ensure that these leads are secured in such a way as to avoid contact with live terminals or moving parts 3 Run high voltage leads into control box and connect to contactor See unit wiring label and Fig 13 Ts CAUTION TRANSFORMER CONTAINS AUTO RESET OVERCURRENT PROTECTOR IT MAY RESET WITHOUT WAR
15. installation start up and service instructions SINGLE PACKAGE ROOFTOP 587A Sizes 018 060 1 1 2 to 5 Tons GAS HEATING ELECTRIC COOLING UNITS IMPORTANT READ BEFORE INSTALLING 1 Read and become familiar with these installation in structions before installing this unit Fig 1 2 Be sure the installation conforms to all applicable local and national codes 3 These instructions contain important information for the proper maintenance and repair of this equipment Re tain these instructions for future use CONTENTS Page SAFETY CONSIDERATIONS 1 INSTALLATION 2 13 1 Locate the 2 ll Unit Duct 2 Ill Rig and Place Unit 7 IV Field 7 PRE START UP 13 14 START UP cus baa RE awe S en Rok 15 23 1 Heating Section Start Up and Adjustments 15 ll Cooling Section Start Up and Adjustments 18 Ill Indoor Airflow and Airflow Adjustments 19 CARE AND MAINTENANCE 24 25 Air 24 ll Evaporator Blower and 24 SERVICE 25 32 Cleaning 25 ll Refrigerant Charge 27 Replacement Parts
16. 5 Charge unit with R 22 refrigerant using a volumetric charging cylinder or accurate scale Refer to unit rating plate for required charge Be sure to add extra refriger ant to compensate for internal volume of filter drier NOTE See Checking and Adjusting Refrigerant Charge on page 18 C Condenser Coil Evaporator Coil and Condensate Drain Pan Inspect the condenser coil evaporator coil and condensate drain pan at least once each year Proper inspection and cleaning requires the removal of the unit top See Unit Top Removal section above The coils are easily cleaned when dry therefore inspect and clean the coils either before or after each cooling season Re move all obstructions including weeds and shrubs that in terfere with the airflow through the condenser coil Straighten bent fins with a fin comb If coated with dirt or lint clean the coils with a vacuum cleaner using the soft brush attach ment Be careful not to bend the fins If coated with oil or grease clean the coils with a mild detergent and water solu tion Rinse coils with clear water using a garden hose Be careful not to splash water on motors insulation wiring or air filter s For best results spray condenser coil fins from inside to outside the unit On units with an outer and inner condenser coil be sure to clean between the coils Be sure to flush all dirt and debris from the unit base Inspect the drain pan and condensate drain line when in
17. Weatherprobe II Device 389034 201 14 START UP HEATING SECTION START UP AND ADJUSTMENTS Do not jumper any safety devices when operating the unit Ensure that burner orifices are aligned properly Unstable operation may occur when the burner orifices in the mani fold are misaligned Follow the lighting instructions on the heating section oper ation label located inside the burner access door to start the heating section However when lighting the unit for the first time perform the following additional steps If the gas supply pipe was not purged before connecting the unit it will be full of air It is recommended that the ground joint union be loosened and the supply line be allowed to purge until the odor of gas is detected Never purge gas lines into a combustion chamber Immediately upon detection of gas odor retighten the union Allow 5 minutes to elapse then light unit in accordance with Checking Heating Control Operation section below A Checking Heating Control Operation Start and check the unit for proper heating control operation as follows See furnace lighting instructions located inside burner access panel 1 Place the room thermostat SYSTEM switch in the HEAT position and the FAN switch in the AUTO position 2 Set the heating temperature control of the thermostat above ro
18. control functions the return air opening should be un blocked to permit normal air circulation By using this method to check the limit control it can be established that the limit is functioning properly and the unit will fail safe if there is a restricted circulating air supply or motor failure If the limit control does not function during this test the cause must be determined and corrected H Heating Sequence of Operation Unit Sizes 018 042 Room thermostat calls for heat closing circuit between R and W 24 v control circuit terminals Power to the R terminal is supplied through LS and ALS safety switches The PC2 in ducer control board is energized which starts the inducer mo tor IM The IM comes up to speed and the vacuum in the collector box increases opening the normally closed and clos ing the normally open contacts of the pressure switch PS energizing the circuit to the IGN ignition control and the pilot valve PV If the flame sensor proves the presence of the pilot flame the internal switching of the ignition control deenergizes the spark generator and energizes the main gas valve MV and the IFR2 electronic timer Gas flows to the main burners and is ignited by the pilot flame The PC1 elec tronic timer will close the IFR2 relay 60 seconds after the burners are ignited and the blower motor will start When the thermostat is satisfied the R and W circuit is opened and power is removed from the
19. nect to contactor See unit wiring label and Fig 13 Unit Sizes 048 060 Standard Power Entry Location Knockouts Located on Unit Duct Panel 1 Remove blower access panel and knockouts from low and high voltage entry points 2 Connect ground lead to chassis ground connection when using separate ground wire Run high voltage leads into junction box through 1 di ameter knockout hole in duct panel using an acceptable means of maintaining water integrity 4 Connect wires to power leads See unit wiring label or Fig 13 Table 3 Electrical Data 018040 208 230 1 60 030060 208 230 1 60 187 253 60 030080 042080 208 230 1 60 187 253 107 0 048100 208 230 1 60 187 25 060100 208 230 1 60 187 25 060120 LEGEND AWG American Wire Gage LRA Locked Rotor Amps FLA Full Load aes MCA Minimum Circuit Amps HACR Heating Air Conditioning MOCP Maximum Overcurrent and Refrigeration Protection Hp Nominal Horsepower RLA Rated Load Amps Fuse or HACR breaker Ps CANADIAN OAS SOCIATION we nem FLA VOLTAGE coma EVAPORATOR CONDENSER V PH HZ RANGE each FAN MOTOR FAN MOTOR EE Min RLA CRA 024040 25 024040 oomzoo eo 187 253 SN Un zi 02 02 MAXIMUM SUPPLY WIRE LENGTH ce ft
20. 120 000 Btuh only a minor change in the manifold pressure is required 15 Observe manifold pressure and proceed as follows to adjust gas input a Remove cover screw over regulator adjustment screw on gas valve b Turn regulator adjustment screw clockwise to in crease gas input or turn regulator adjustment screw counterclockwise to decrease input Manifold pres sure must be between 3 2 and 3 8 in wg c Replace cover screw cap on gas valve d Turn off gas supply to unit Remove manometer from pressure tap Replace pipe plug on gas valve Turn on gas to unit Check for leaks 2 Measuring Manifold Pressure LP Gas Units The main burner orifices on an LP gas unit are sized for the unit rated input when the manifold pressure is 10 5 in wg Proceed as follows to adjust gas input on an LP gas unit a Turn off gas to unit b Remove pipe plug on outlet of gas valve then con nect manometer at this point c Turn on gas to unit d Remove cover screw over regulator adjustment screw on gas valve e Adjust regulator adjustment screw for a manifold pres sure reading of 10 5 in wg Turn adjusting screw clock wise to increase manifold pressure or turn adjusting screw counterclockwise to decrease manifold pressure f Replace cover screw g Turn off
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22. 2 screws on the left side of vent cap and vent cap guard assembly VENT CAP GUARD TOP VENT CAP VENT CAP GUARD FLUE PANEL Fig 10 Vent Cap Assembly Table 1 Specifications UNIT SIZE 587A 018040 024040 024060 030040 030060 030080 036060 036080 036096 NOMINAL CAPACITY ton a ae ae ee OPERATING WEIGHT Ib COMPRESSORS Hermetic Scroll Quantity 1 REFRIGERANT R 22 Charge Ib 3 85 4 10 4 10 4 30 4 30 4 30 460 460 460 REFRIGERANT METERING DEVICE AccuRater Piston Piston Size 5 9 65 65 67 67 67 80 80 80 CONDENSER COIL Rows Fins in 2 20 2 20 2 20 2 20 2 20 2 20 2 20 2 20 2 20 Face Area sq ft 143 143 143 14 3 14 3 14 3 143 143 14 3 CONDENSER FAN Nominal Cfm Diameter in 20 Motor Hp Rpm Yo 825 EVAPORATOR COIL Rows Fins in 3 14 3 Face Area sq ft 3 3 3 EVAPORATOR FAN Direct Drive Nominal Cfm 600 800 800 1000 1000 1000 1200 1200 1200 Size 10x8 10x8 10x8 10x8 10x 8 10x8 10x 10 10 x 10 10 x 10 FURNACE SECTION Burner Orifice No Qty drill size Natural Gas Burner Orifice No Qty drill size Propane Gas Pilot Orifice Diameter Dual Orifice in Natural Gas 0225 0240 0225 0240 0225 0240 0225 0240 0225 0240 0225 0240 0225 0240 0225 0240 0225 0240 Pilot Orifice Diameter in Propane Gas 010 010 010 010 RETURN AIR FILTERS sq in Disposable 288 288 528 528 528 624 624 6
23. AIR EXTERNAL STATIC PRESSURE in wg 587A SPEED DELIVERY oo o1 o2 os 04 os oe 07 os 09 10 Cim ___ 1070 1000 900 790 e 530 t m 336 323 024040 024060 030040 Cim 108 1200 1182 1165 1132 1088 1035 976 909 836 761 030060 030080 22 Wats 600 573 555 03060 042060 ww Wats me mo ese mu 50 ms 44 we 47 er 042080 Watts 880 850 810 790 745 710 670 630 591 551 511 036096 tow em lise ias ves 1680 ser tare voee iso vios o8 042096 Wets 1005 965 935 900 865 820 sse 747 710 674 635 Was 740 705 665 635 600 560 525 488 452 418 381 048120 805 705 633 597 MOTOR AIR EXTERNAL STATIC PRESSURE in wg TURNS OPEN RPM DELIVERY 01 02 Watts 1195 1125 1055 060080 060100 060120 915 Air delivery values for without air filter and for dry coil See Table 10 for wet coil pressure drop Deduct field supplied air filter pressure drop and wet coil pressure drop to obtain external static pressure available for ducting TUnit air delivery is outside of operating range NOTES 1 Do not operate the unit at a cooling airflow that is less than 350 cfm for each 12 000 Btuh of rated cooling ca pacity Evaporator coil icing
24. CONDENSER RUBBER O RING COIL 99CC501052 STAMPED ARROW ON COUPLING BODY TOWARD EVAPORATOR COIL Fig 19 AccuRater Metering Device Components Unit Sizes 018 042 Only Table 11A Superheat Charging Table 587A018 042 Superheat Entering Suction Service Valve EVAPORATOR COIL ENTERING AIR TEMPERATURE F wb Do not attempt to charge system under these conditions refrigerant slugging may occur Table 11B Superheat Charging Table 587A048 Superheat Entering Suction Service Port 1750 Evap Air Ewb F Evap Air Cfm s amp amp e vo 1 590 590 550 s90 890 149 i79 204 229 234 299 eo sm 6 oss 128 159 183 208 217 826 e se 18 i58 163 1 amp 8 203 214 0 s 158 143 168 185 202 es s 122 7 18 190 35 su 76 39 159 17 os s L ps9 e 1 51 165 sew pp ddd L88 9 18 s 88 7 1 7 1 a LEGEND Ewb Entering Wet Bulb SPH Superheat at Compressor F i Do not attempt to charge system under these conditions refrigerant slugging may occur 98 Table 110 Superheat Charging Table 587A060 Superheat Entering Suction Service Port Evap A
25. PC2 inducer control and the IGN which causes the MV to close instantly and the IM is deen ergized The electronic timer PC1 will keep the IFM running an additional 60 to 90 seconds Then the blower stops and the unit is on standby until another call for heat NOTE If the main limit switch opens due to the unit over heating the blower motor is turned on through the elec tronic board If the pilot fails to light within a 120 second trial for ignition period from the initial call for heat the IGN will go into a Retry mode after a period of approximately 5 minutes fol lowing the 120 second trial for ignition period If the pilot again fails to light IGN will go into Retry mode this cycle will be repeated until the pilot light ignites If the pilot flame has been established but then extinguishes the IGN will im mediately reset as if it were the initial call for heat If this occurs more than 3 times the IGN will lock out the system and the diagnostic LED located on the IGN will flash To reset open the R W thermostat circuit for 30 seconds and re close If the diagnostic LED glows constantly replace control Unit Sizes 048 060 With power supplied to the unit 24 v is supplied to the heat ing relay HR through the rollout switch RS This ener gizes the normally open set of contacts of heater relay On a call for heat 24 v is supplied to the induced draft relay IDR and to the time delay relay TDR through the W
26. access panel illustrates proper arrange ment and size of piston See Table 1 for piston sizes 8 Clean piston refrigerant metering orifice 9 Replace retainer O ring part number 99CC501052 Unit Sizes 048 060 Actutrol Device This metering device is a fixed orifice and is located in the header to the evaporator coil J Liquid Line Strainer The liquid line strainer to protect metering device is made of wire mesh and located in the liquid line on inlet side Strainer is pressed into the line Remove strainer by threading a number 10 sheet metal screw into strainer and pulling the screw with pliers NOTE Only the liquid line strainer on unit sizes 018 042 can be removed K Heating Section Ensure dependable and efficient heating operation by inspect ing the heating section before each heating season and clean ing when necessary Proceed as follows to inspect and clean heating section 1 Turn off gas and power to unit 96 9 ot dec vM Remove burner access door Disconnect 2 wires from inducer motor Remove complete inducer assembly from unit Remove screws that secure collector box to heat ex changer exposing flue openings Remove flue choke Clean cells using field provided small wire brush steel spring cable reversible electric drill and vacuum cleaner a Assemble wire brush and steel spring cable Use 4 ft of in diameter high grade steel spring cable commonly known as d
27. building practices oe 5 Z 13 8 POWER ENTRY UNIT O SIZES 018 042 CAUTION DO NOT DRILL OR SCREW IN SHADED AREA 11 4 STD POWER O ENTRY UNIT SIZES 048 060 7 8 LOW VOLTAGE ELECTRICAL ENTRY UNIT SIZES 018 042 7 8 STD LOW VOLTAGE ELECTRICAL ENTRY UNIT SIZES 048 060 SUPPLY INLET OUTLET PANEL NOTE Alternate power and low voltage entries for unit sizes 048 and 060 not shown UNIT 5874 018 042 048 060 Fig 12 Location of Coil Area Not to be Drilled RETURN 10 Electrical Connections Field Power Supply 1 Make all electrical connections in accordance with NEC ANSI NFPA and local electrical codes governing such wir ing In Canada all electrical connections must be in ac cordance with CSA Canadian Standards Association Standard C22 1 Canadian Electrical Code Part 1 and ap plicable local codes Refer to unit wiring diagram
28. gas to unit Remove manometer from pres sure tap Replace pipe plug on gas valve then turn on gas to unit Check for leaks D Check Burner Flame Observe the unit heating operation and watch the burner flames through the observation port to see if they are light blue and soft in appearance and that the flames are approx imately the same in appearance for each burner See Fig 15 E Blower Heat Relay Operation Unit Sizes 018 042 Only Blower relay PC1 see the unit wiring diagram is located in the control box and adjusts to permit either longer or shorter off cycles The on cycle is factory set for one minute on timing The adjusting dial on the relay see Fig 16 is factory set at the minimum position to provide optimum perfor mance for most installations On unusual installations the length of time the blower remains on may require increas ing To increase blower operation time rotate the adjusting dial counterclockwise To decrease blower operation time ro tate dial clockwise PILOT FLAME BURNER FLAME ADJUSTING DIAL Fig 16 Blower Heat Relay Unit Sizes 018 042 Only Table 6 Rated Gas Inputs at Indicated Manifold Pressures 018040 024040 030040 2 024060 030060 3 036060 042060 036096 042096 4 048100 060100 5 048120 060120 Min Propane Size 136 110 13 0 0 0 MANIFOLD NATURAL GAS
29. may occur at airflows below this point Water blow off may occur at airflows above 450 cfm per 12 000 Btuh of rated cooling capacity 2 Fan speed is based on pulley ratios and motor nameplate speed of 1580 rpm n Table 10 Wet Coil Pressure Drop MODEL PRESSURE DROP PRESSURE DROP 029 1400 050 038 018 024 044 052 048 1600 060 072 036 042 23 CARE AND MAINTENANCE To ensure continuing high performance and to minimize the possibility of premature equipment failure periodic mainte nance must be performed on this equipment This combina tion heating cooling unit should be inspected at least once each year by a qualified service person NOTE TO EQUIPMENT OWNER Consult your local dealer about the availability of a maintenance contract nA ANI i ll EVAPORATOR BLOWER AND MOTOR NOTE Motors without oilers are permanently lubricated Do not attempt to lubricate these motors For longer life operating economy and continued efficiency clean accumulated dirt and grease from the blower wheel and motor annually Lubricate the motor every 5 years if the motor is used inter mittently thermostat FAN switch in AUTO position or ev ery 2 years if the motor is used continuously
30. mild solvent g Reassemble wheel and cutoff plate into housing h Reinstall blower shaft bearing locking collars blower pulley and belt 4 Reinstall blower assembly into unit route blower motor leads into control compartment and reconnect all blower motor leads Replace panels 5 Restore electrical power then gas supply to unit Start unit and check for proper blower rotation and motor speeds during heating and cooling cycles SERVICE 1 CLEANING Inspect unit interior at the beginning of each heating and cool ing season or as operating conditions require To inspect and clean the unit top must be removed A Unit Top Removal 25 NOTE When performing maintenance or service procedures that require removal of the unit top be sure to perform all of the routine maintenance procedures that require top re moval including inspection of the heat exchanger area coil inspection and cleaning and condensate drain pan inspec tion and cleaning Only qualified service personnel should perform mainte nance and service procedures tha
31. necessary readjust the electrode as shown in Fig 18 be cer tain to maintain the in spark gap FLAME SENSOR SPARK ELECTRODE 0225 DIA ORIFICE 0240 DIA ORIFICE Fig 18 Position of Electrode to Pilot F Electrical Controls and Wiring Inspect and check the electrical controls and wiring annu ally Be sure to turn off the gas supply and then the electrical power to the unit Remove the control blower and compressor compartment ac cess panels to locate all the electrical controls and wiring Check all electrical connections for tightness Tighten all screw con nections If any smoky or burned connections are noticed dis assemble the connection and clean all the parts Then restrip the wire end and reassemble the connection properly and securely After inspecting the electrical controls and wiring replace all of the panels Start the unit and observe at least one com plete heating cycle and one complete cooling cycle to ensure proper operation If discrepancies are observed in either or both operating cycles or if a suspected malfunction has oc curred check each electrical component with the proper elec trical instrumentation Refer to the unit wiring label when making these checkouts NOTE Refer to the heating and or cooling sequence of oper ation in this publication as an aid in determining proper con trol operation G Gas Input The gas input does not require checking unless improper h
32. switch ALS1 is a temperature actuated automatic reset switch and is connected in series with the LS The function of the switch is to prevent abnor mal blower compartment temperatures The switch is mounted on the blower housing When the temperature at the auxil iary switch reaches the maximum allowable temperature the R control circuit breaks closing the gas valve and stopping gas flow to the burners and pilot The switch will reset automatically when the blower compartment temperature returns to normal The IFM continues to run until ALS1 resets K Auxiliary Limit Switch Rollout The function of the switch is to close the main gas valve 17 in the event of flame rollout The switch is located above the main burners When the temperature at the auxiliary switch reaches the maximum allowable temperature the R control circuit trips closing the gas valve and stopping gas flow to the burners and pilot If the switch cycles again investigate the problem The IFM continues to run until switch resets COOLING SECTION START UP AND ADJUSTMENTS
33. 0 11 279 4 6 457 2 1 7Ve 495 3 389049 703 1 2 355 6 389050 701 0 914 235 D ZEE rid 3 r 3 0 389020704 3 67 10795 1 gt 4826 1 6 457 2 1 7 495 3 389050 705 1 10 2 571 5 389050 706 2 19 654 1 NOTES 1 Completed specification sheet must accompany pitched curb order Contact order correspondent or product man ager for specification forms 2 This area of the roof curb slopes slightly to the right for drainage purpose e ZI Tg 77 CONSTANT rg SAS VA he TAK MEL MAL Cf Ml Sal PI o I LA 0 1 3 4 0 1 3 4 0 1 3 4 44 5 44 5 5 1 6 SUPPLY 457 21 3 10 1168 41 0 6 1 27 165 11 17 6 RETURN 457 21 n L SEE NOTE 2 0 1 1 27 38 11 VIEW IS TYPICAL FOR FLAT ROOF CURBS AND PITCHED ROOF CURB ROOF CURB DECK PAN RAIL e Bi pu 3 4 144 5 WOOD NAILER 1 25 4 REF TYPICAL ROOF CURB NAIL COUNTER FLASHING ROOFING PAPER INSULATION CANT STRIP 0 1 3 4 44 5 EMBOSSMENTS FOR LOCATING VIEW 15 NOT TO SCALE UNIT ON ROOF CURB 1 CABINET UNIT POSITIONED ON ROOF CURB WOOD NAILER FLAT ROOF CURB PITCHED ROOF CURB f 0 52411 MORET 152 4 tn ores Si B VARIES ACCORDING TO PITCH p k o 1 3 47 44 5 Fig 5 Dedicate
34. 05 C wiring material Use copper wire only for field power supply leads Compressor and fan motors provided with inherent thermal protection ap OI Fig 22 Typical 208 230 1 60 Wiring Diagram Unit Sizes 048 060 32 TROUBLESHOOTING Cooling SYMPTOM CAUSE REMEDY Compressor and condenser Compressor is reenergized in less than 5 minutes Wait for 5 minutes from the time that the compressor was deenergized fan will not start Call power company Fuse blown or circuit breaker tripped Replace fuse or reset circuit breaker Defective thermostat contactor transformer or control Replace component relay Insufficient line voltage Determine cause and correct Incorrect or faulty wiring Check wiring diagram and rewire correctly Thermostat setting too high Lower thermostat setting below room temperature Faulty wiring or loose connections in compressor circuit Check wiring and repair or replace Compressor will not start but condenser fan runs Defective capacitor or overload Determine cause and replace Compressor cycles other than normally satisfying thermostat Insufficient line voltage Determine cause and correct Blocked condenser Determine cause and correct Defective capacitor or overload Determine cause and replace Defective thermostat Replace thermostat Faulty condenser fan motor or capacitor Restriction in refrigerant system Locate restriction and remove Compressor o
35. 2 Use only copper or copper clad conductor for connec tions between field supplied electrical disconnect switch and unit DO NOT USE ALUMINUM WIRE Maximum wire size is no 6 AWG American Wire Gage 3 Voltage to compressor terminals during operation must be within voltage range indicated on unit nameplate also see Table 8 4 Insulate low voltage wires for highest voltage contained within conduit when low voltage control wires are run in same conduit as high voltage wires 5 Do not damage internal components when drilling through any panel to mount electrical hardware conduit etc The unit must have a separate electrical service with a field supplied waterproof fused disconnect switch mounted at or within sight from the unit Refer to the unit rating plate for maximum fuse circuit breaker size and minimum circuit amps ampacity for wire sizing Table 3 shows recommended wire sizes based on rating plate data The field supplied disconnect switchbox may be mounted on the unit over the high voltage inlet hole when the standard power and low voltage entry points are used Disconnect may be mounted on the duct panel of unit See Fig 12 for accept able locations Also see Fig 8 and 4 Proceed as follows to complete the high voltage connections to the unit Unit Sizes 018 042 1 Connect ground lead to chassis ground connection when using separate ground wire 2 Run high voltage leads into unit control box and con
36. 24 720 Cleanable 192 192 352 352 352 416 416 416 480 nommar CAPACITY fon ______ 34 34 4 5 5 OPERATING WEIGHT b s so so 400 4 soi ae soa 5671 COMPRESSORS Hermetic Scroll Quantity 1 REFRIGERANT R 22 Charge Ib 5 2 5 20 5 20 6 55 6 55 6 55 7 40 7 40 7 40 0 REFRIGERANT METERING DEVICE AccuRater Piston Acutrol Device Piston Size 76 76 76 CONDENSER COIL Rows Fins in 2 20 2 20 2 20 2 17 2 17 2 17 2 17 2 17 2 17 Face Area sq ft 143 14 3 14 3 10 2 10 2 102 10 2 102 102 CONDENSER FAN Nominal Cfm 2500 2500 2500 3400 3400 3400 3400 Diameter in 20 20 20 22 2 2 22 22 22 Motor Hp Rpm 14 1100 V4 1100 1100 1100 1100 1100 1100 EVAPORATOR COIL Rows Fins in 4 14 4 14 4 14 4 15 4 15 4 15 4 15 4 15 4 15 Face Area sq ft 40 40 4 0 5 44 5 44 5 44 544 5 44 544 EVAPORATOR FAN Direct Drive Belt Drive Nominal Cfm 1400 1400 1400 1600 1600 1600 2000 2000 2000 Size in 10 x 10 10 x 10 10 x 10 10 x 10 10 x 10 10x10 10x10 10 x 10 10 x 10 FURNACE SECTION Burner Orifice No Qty drill size Natural Gas Burner Orifice No Qty drill size Propane Gas Pilot Orifice Diameter Dual Orifice in Natural Gas Pilot Orifice Diameter in Propane Gas 010 010 010 010 010 010 010 010 RET
37. 28 408 389 7571 l L1 ess 1285 vano sire Tose 777 00 Vis Ex uer er 120 Tose 004 Bee us vat mr we m se se 39 9 1261 Vis Li ses 500 tw Vis 625 9 708 0 M 030040 030060 Pos 94 T ur 3s Watts 104 1 9 7 691 018040 TES Watts Cim 779 Watts 433 024040 024060 51 5 89 37 248 0 N 030080 036060 036080 042060 042080 652 353 776 97 4 A 9 532 27 1457 Psat 9 eos vt 987 945 850 809 676 2 1303 ms Vis 1 21 1087 71046 1017 91 952 925 900 877 854 88i 9 1856 1420 vat Lee ms zo sos es em sef a 036096 042096 048080 048100 048120 Was i769 680 MOTOR 587A PULLEY TOM DELIVERY TURNS OPEN n Watts 1055 Watts 2100 delivery values are without air filter and are for dry coil See Table 10 for wet coil pressure drop Deduct field supplied air filter pressure drop and wet coil pressure drop to obtain external static pressure available for ducting TUnit air delivery is outside of operating range NOTES 1 Do not operate the unit at a cooling airflow that is less than 350 cfm for each 12 000 Btuh of rated cooling ca pacity Evaporato
38. 4812 3 999 Watts 94 2 1839 5 801 302 765 725 70 o 036096 042096 7 7 Cim 183 i740 162 Watts eoo 57 seo 478 428 388 343 502 5 1 9 e 048080 048100 048120 5 42 1768 i0 772 496 OO 995 541 Oojojojojco High alls g 1957 1873 587A PULLY MOTOR TURNS OPEN AIR DELIVERY 0 0 m 125 1090 106 2180 _ 09 T iss Watts 990 Cim 2310 2240 2130 2040 1950 1840 1740 1640 1510 2 v 060080 060100 060120 Air delivery values for without air filter and are for dry coil See Table 10 for wet coil pressure drop Deduct field supplied air filter pressure drop and wet coil pressure drop to obtain external static pressure available for ducting tUnit air delivery is outside of operating range NOTES 1 Do not operate the unit at a cooling airflow that is less than 350 cfm for each 12 000 Btuh of rated cooling ca pacity Evaporator coil icing may occur at airflows below this point Water blow off may occur at airflows above 450 cfm per 12 000 Btuh of rated cooling capacity 2 Fan speed is based on pulley ratios and motor nameplate speed of 1580 rpm 99 98 Dry Coil Air Delivery Downflow Discharge at 230 MOTOR
39. 5 001 902 ssp 09 062 80 0 0810 86 v 64 541 LM LM 1721919313 3H3H LISNNOISIG LNNOW M3IA M3IA 3015 9NIN3dO IV 5 IVNOILdO 092 2 vl S ES CE E Z 01123 02 SV9 1dN 271 8705 3227 83 018 700 TS 0 562 8 5 53807 2 91 5 LE eE EI 12 8 91 vl E BBS 91 d 970 j Z 0EE 669 L t El 100 1N3A 5 NINJdO NIV 7 01140 2 22 TOBINOOD VIG 8 4 0 SE 0 VIG 8 E M3IA 401 5744110 31 8 9 38 81 1 2 1 BZ 26 2 1756 a 9 o ouo uv 5 57119 PN 1 91 5 992 5 09 8 4 6 91 gt 8 102 9175 2 07016 07016 2 cl mE Seg 89 v MSTA LNOYS M3IA 3015 1431 4 8221 B E 8v B 95 5 85 8 555 2 85 25 wes 8 2 le 81 6 2 91 1 2 2XVANI 91 5 e b 86 NOILSNEWOD 2 85 2 85 zB 4 E 4 91 5 2 0 9 89 CZE 91
40. D SUPPLIED FUSED DISCONNECT POWER SUPPLY CONTROL BOX LOW VOLTAGE POWER HIGH VOLTAGE POWER LEADS 4 LEADS SEE UNIT STANDARD POWER ENTRY ONLY WIRING LABEL UNIT SIZES 048 060 Field Conirol Voltage Wiring d Inspect coil fins If damaged during shipping and han Field High Voltage Wiring dling carefully straighten fins with a fin comb Fig 14 High and Control Voltage Connections 4 Verify the following conditions F Accessory Installation At this time any required accessories shoul
41. For extended overhangs provide a minimum clearance of 36 inches Provide a minimum clearance of 42 in for the control box side next to a block wall or any other grounded surface Pro vide a minimum clearance of 48 in between the control box side of the unit and any electrically live parts for example another unit Provide a minimum clearance of 36 in for the accessory manual outdoor air damper or economizer if the unit is equipped with one The clearance for under the unit is zero inches Minimum operating clearance to combustibles is 30 in on all sides except duct side Do not install unit in an indoor location Do not locate unit air inlets near exhaust vents or other sources of contami nated air Be sure that unit is installed so that snow will not block the combustion intake or flue outlet Although unit is weatherproof guard against water from higher level runoff and overhangs For downflow applications an accessory roof curb must be installed on and flashed into the roof before unit installa tion Install insulation cant strips flashing and gasket ma terial per accessory roof curb installation instructions The placement of the gasket material between the unit and roof curb is critical for water integrity The curb should be leve to within inch Unit leveling tolerances are shown in Fig 7 For horizontal applications place
42. Ho 6 97 LM H3NHOO LA LINN TANYd LONG 0 0 15 MSIA B SB2 y l li E 172612 1759 31 6 2 91 6 Z 0 75 8 1 91 1 87 8 2 bi kon 8 2 Vl dY3 3015 1H9IS NOTLOANNOO 599 ldN 1 2 1 SYS 100 7 553997 3 018 N Cy 289 1 1 42 S po 91 5 52 8 55 2 AMIN3 1Y291419313 83802 0152 8716 VIGO TWNIWON 2 1 AMLNA VO18123713 CAMINS 7091 09 7015 2722 073 VIO 8 4 uej JO ILON 971000 apo B 96 Cc l vt ep 8822 1 3 176142 z 91 5 82 05 55 555955 eet raa up Jo uan g 0 292 08 eusoddo epis uu 9 s d zun Jo epis 000 0 0 0777777077 doi yun 26121 8v UP Jo uoisue xa3 wnwixeyy NI TLV S18WOO OL SHSONVHV3 TIO G O3H 0 294 0 7 epis sseoov 0 292 06 epigS jeueg sse oy NI SONIOIAH3S HOd SSAONVYVATO UNT SIZE CURB PN r e ROOF PITON 389049 701 0 8 203 2 Flat 389049 702 3 612 1079 5
43. N INSTRUCTIONS VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTALLATION INSTRUCTIONS CHECK ALL ELECTRICAL CONNECTIONS AND TERMINALS FOR TIGHTNESS CHECK GAS PIPING FOR LEAKS CHECK THAT INDOOR AIR FILTER IS CLEAN AND IN PLACE VERIFY THAT UNIT INSTALLATION IS LEVEL CHECK FAN WHEEL AND PROPELLER FOR LOCATION IN HOUSING ORIFICE AND SETSCREW TIGHTNESS Ill START UP ELECTRICAL SUPPLY VOLTAGE L1 L2 COMPRESSOR AMPS L1 TEMPERATURES OUTDOOR AIR TEMPERATURE RETURN AIR TEMPERATURE COOLING SUPPLY AIR GAS HEAT SUPPLY AIR PRESSURES GAS INLET PRESSURE GAS MANIFOLD PRESSURE REFRIGERANT SUCTION REFRIGERANT DISCHARGE INDOOR FAN AMPS DB DB IN WG IN WG PSIG PSIG WB VERIFY REFRIGERANT CHARGE USING CHARGING TABLES ON PAGES 28 and 29 Copyright 1992 Carrier Corporation Catalog No BDP 3358 703 CL 1 9 1 92 587A 18 2 Cancels 587 18 1 CUT LINE
44. NING STARTING HEATING OR COOLING SECTION OF THIS PRODUCT DISCONNECT POWER PRIOR TO SERVICING THIS COMPARTMENT MUST BE CLOSED EXCEPT WHEN SERVICING 316056 201 REV A Fig 13 Transformer Label Special Procedures for 208 V Operation For operation on 208 v 1 Disconnect the orange transformer primary lead from the contactor See the unit wiring label 2 Remove the tape and cover from the terminal on the end of the red transformer primary lead Save the cover 3 Connect the red lead to the contactor terminal from which the orange lead was disconnected 4 Insulate the loose terminal on the orange lead Wrap the cover with electrical tape so that the metal terminal can not be seen Indoor blower motor speed taps should be changed for 208 v operation on 208 230 v rated units To change blower speed interchange motor leads High speed is for cooling and me dium speed is for heating operation See Indoor Airflow and Airflow Adjustments section on page 19 and unit wiring label Control Voltage Connections Install a factory approved thermostat See Table 4 Locate the room thermostat on an inside wall in the space to be conditioned where it will not be subjected to either a cool ing or heati
45. URN AIR FILTERS in Disposable 720 720 720 816 816 816 960 960 Cleanable 480 480 480 544 544 544 640 640 LEGEND ARI Air Conditioning amp Refrigeration Institute Required filter areas shown are based on the larger ARI rated cooling airflow or the heating airflow at a velocity of 300 ft min for the disposable type or 450 ft min for the high capacity cleanable type 0225 0240 0225 0240 0225 0240 0225 0240 0225 0240 0225 0240 0225 0240 0225 0240 0225 0240 960 640 Gas Piping The gas supply pipe enters the unit through the access hole provided The gas connection to the unit is made to the in FPT gas inlet on the manual shutoff or gas valve Install a gas supply line that runs to the heating section Re fer to Table 2 and NFGC for gas pipe sizing Do not use cast iron pipe Check the local utility for recommendations con cerning existing lines Size gas supply piping for 0 5 in wg maximum pressure drop Never use pipe smaller than the 1 in FPT gas inlet on the unit gas valve For natural gas applications the gas pressure at unit gas connection must not be less than 5 in wg or greater than 13 in wg while the unit is operating For LP liquid pro pane applications the gas pressure must not be less than 11 in wg or greater than 13 in wg at the unit connection When installing the gas supply line observe local codes per taining to gas pipe installations Re
46. age The power supply v ph and Hz must correspond to that specified on unit rating plate The electrical supply provided by the utility must be suf ficient to handle load imposed by this unit Refer to Locate the Unit section and Fig 2 4 pages 2 4 for locations of gas inlet electrical inlets condensate drain duct connections and required clearances before setting unit in place See Table 1 for unit physical data Locate the unit where the vent cap will be a minimum of 4 ft from openable windows or doors This installation must conform with local building codes and with the National Fuel Gas Code NFGC Ameri can National Standards Institute ANSI 2223 1 1988 in Canada CAN CGA Canadian Gas Association B149 1 2 M86 or NFPA National Fire Protection Associa tion 54 1988 TIA 54 84 1 Refer to Provincial and local plumbing or wastewater codes and other applicable 10 cal codes Approved for outdoor installation on wood flooring or on class A B or C roof covering materials f INSTALLATION Unit sizes 018 042 are shipped in the downflow configura tion To convert to horizontal discharge remove horizontal duct opening covers Using the same screws install covers with insulation side up facing inside on the unit on down flow duct openings Seals around duct openings must be tight Unit sizes 048 and 060 are shipped with all 4 duct open ings covered Remove appropriate panels for
47. ak Leak test all refrigerant tubing con Be sure that caps on the ports are tight nections using electronic leak detector halide torch o C ee or liquid soap solution If refrigerant leak is de Unit is now ready for initial start up Table 5 Accessory List PART NUMBER Small Cabinet Units 587A ACCESSORY 030040 036060 042060 048080 060080 024040 030060 036080 042080 048100 060100 018040 024060 030080 036096 042096 048120 060120 Dedicated Small Cabinet Flat sears UO Roof Curb 389049 703 DINER ete 389059 701 Universal Flat Roof Curb 389059 702 389059 703 389060 701 389060 702 Universal Pitched Roof Curb 22800083 389060 704 389060 705 389060 706 oon 272 S an ee 71 8890720 A4 Z Dedicated Small Cabinet m Pitched Roof Curb A 880074 4 ___________389050 705 __ 389050 706 zo eee T 3121449200 _ o Pa i agoa 31249202 Curbs Downflow 312149 204 389048 701 389048 702 389043 703 ee 389048 704 Square to Round Transition Horizontal i maid 512118201 sexi TCC Flexible Duct Kit 312119 203 312119 204 3004190204 _____ _ 4 O Concentric Diffuser Box GET MEER 309410 203 High Pressure Switch Kit 0 F Low Ambient Kit
48. d G terminals of the thermostat providing the fan switch is in the Auto position deenergizing the compressor contactor opening the contacts supplying power to compressor and OFM The IFM will continue to operate for 30 seconds NOTE Once the compressor has started and then stopped it cannot be restarted again until 5 minutes have elapsed NOTE The cooling cycle remains on until the room tem perature drops to point that is slightly below the cooling con trol setting of the room thermostat At this point the ther mostat breaks the circuit between thermostat terminal R to terminals Y and G These open circuits deenergize C and IFR1 The condenser and compressor motors stop and after a 30 second delay the blower motor stops The unit is in a standby condition waiting for the next call for cooling from the room thermostat Blower motors are factory connected to deliver the proper heat ing and cooling airflows at normal external static pressures medium speed cooling low speed heating for 230 v units For 208 v o
49. d Small Cabinet Roof Curb Dimensions SUOISUBWIG joog 9 6 4 J31V25 01 LON SI MBIA IS pb SNOISN3WIG 8802 4008 7 0 9777 1 0 ri SPP 1 0 41415 1NV2 E HOLld 01 2174 i uu 1 9N 1 Qu022V 53 I ULT MU e 8 HH HR CZLZZZLZZAZZZA 1 15 03 291 77 imn uL S S SW S M LE CLONE 521 NOILYINSNI i 0 9114008 b Se1 l 0 Seli I MN Y gun 4004 GSHOLId 310N 395 S310H ur BHn2 30089 1Vid YJIIYN GOON SNIHSV Id YSLNNOD am 4004 WIIdAL S21 1 0 58802 4008 GIHOLId NY SAUND 4004 LVI WOIdAL SI MIA 401 000 i 450 S bbl b E Em 4 Ki sd Gund 3004 WSYSAINN NO Q3NOILISOd LINN 13 2 398 1 4008 TYSHJAIND NO 03 0111604 LINN LANIGVO TIVWG SNOILVTIVISNI GUND NI G350 LON SNOLLYTIVISNI 84ND NI Q350 LON F SNOLLVTWISNI HYS 804 SNOLLVTWISNI AVIS 804 um SINJWSSOBK 140406 SINJWSSOBM3 1904405 Ej 3 10 89111 NM Els 0l 872211 1 75912 4 0 2 1 8 0 5 l 0 NO_LINN 9 1 201 404 S1N3HSSOBW3 MS c 28r1 48 5 1 0 Ct 271 0 esodind 1uBu S pes 01 Anubis sejou ureJp quno 3002 Jo
50. d be installed on the unit Refer to Table 5 for available accessories Control wiring information is provided in the unit wiring book a Make sure that gas supply has been purged and that all gas piping has been checked for leaks PRE START UP Proceed as follows to inspect and prepare the unit for initial startup 1 Remove all access panels 2 Read and follow instructions on all WARNING CAU TION and INFORMATION labels attached to or shipped b Make sure that condenser fan blade is positioned cor rectly in fan orifice Blades should clear fan motor by no more than inch c Make sure that air filter s is in place d Make sure that condensate drain trap is filled with water to ensure proper drainage with unit TE Mak i 1 Bhs the following msoactiotie e m E 2 2 and miscellaneous loose parts a Inspect for shipping and handling damages such as 5 Compressors are internally spring mounted Do not loosen j loose parts disconnected wir broken lines loose parts or remove compressor holddown bolts b Inspect for oil at all retrigerapt tubing Y nnectiong 6 Each unit system has 2 Schrader type ports one on hie Aod on unit base Detecting oil gen erally indicates suction line and one on the compressor discharge line refrigerant le
51. e LED is glowing continuously Replace IGN control LED is off Check for power to TH terminal of control Check air gap between electrode tip and pilot target Gap should be as shown in Fig 18 Readjust as necessary Clean moisture or dirt accumulation on electrode ceramic with cloth Cracked ceramic replace pilot electrode assembly Check for loose or broken wiring at and between electronic control head and electrode Replace wire or tighten connection as necessary Check fuses or circuit breaker to ensure voltage to unit Check for 24 v between TH and COM If you read 24 v and above steps have been completed replace electronic ignition control Spark shorting out to main burner Realign electrode tip away from main burner but maintain spark gap to pilot burner See Fig 18 No gas at pilot burner Clean pilot orifice Check inlet pressure to gas valve Recommended operating pres sure 7 in wg natural gas 11 in wg LP gas 0 5 psig 13 6 in wg max pressure Check for 24 v between terminals PV and COM If you read 24 v and above steps have been completed replace gas valve 5 Pilot will not light No spark at electrode Water in gas line Drain install water trap No power to furnace Check power supply fuses wiring or circuit breaker No 24 v power supply to control circuit Check transformer replace if necessary Burners will not ignite No gas at main burners 1
52. eat ing performance is suspected If a problem exists refer to Ad justing Gas Input section on page 15 H Evaporator Airflow The heating and or cooling airflow does not require checking unless improper performance is suspected 7f a problem ex ists be sure that all supply and return air grilles are open and free from obstructions and that the air filter is clean When necessary refer to Indoor Airflow and Airflow Adjustments section on page 19 to check the system airflow Metering Device Servicing Unit Sizes 018 042 AccuRater9 Piston See Fig 19 for metering device components The piston has a refrigerant metering orifice through it The retainer forms a sealing surface for liquid line flare connection To check clean or replace piston 1 Shut off power to unit 2 Remove and reclaim refrigerant from unit using ap proved refrigerant removal methods 3 Remove liquid line flare connections from metering device 4 Note position of arrow on metering device body with re spect to unit 5 Pull retainer out of body Be careful not to scratch flare sealing surface If retainer does not pull out easily care fully use locking pliers to remove retainer Replace scratched or damaged retainer 6 Slide piston out by inserting a small soft wire through metering hole 18 gage thermostat wire See that me tering hole sealing surface around piston cones and fluted portion of piston are not damaged 7 Chart on unit
53. fer to NFGC ANSI Z223 1 1988 in Canada CAN CGA B149 1 2 M86 or NFPA 54 1988 in the absence of local building codes Adhere to the following pertinent recommendations 1 Avoid low spots in long runs of pipe Grade all pipe 1 4 inch in every 15 ft to prevent traps Grade all horizontal runs downward to risers Use risers to connect to heat ing section and to meter Protect all segments of piping system against physical and thermal damage Support all piping with appropri ate straps hangers etc Use a minimum of one hanger every 6 ft For pipe sizes larger than Y in follow rec ommendations of national codes Apply joint compound pipe dope sparingly and only to male threads of joint when making pipe connections Use only pipe dope that is resistant to action of liquefied pe troleum gases as specified by local and or national codes Never use Teflon tape Install sediment trap in riser leading to heating section on natural and LP gas units per Fig 11 This drip leg functions as a trap for dirt and condensate Install an accessible external manual main shutoff valve in gas supply pipe within 6 ft of heating section 6 Install ground joint union close to heating section be tween unit manual shutoff and external manual main shutoff valve Pressure test all gas piping in accordance with local and national plumbing and gas codes before connecting pip ing to unit NOTE If gas supply system will be
54. for 24 v between terminals and COM control ea If you read 24 v replace gas valve portion of control head gas valve assembly If 24 v is not present check flame sensor for cracked ceramic insulator or shorted sensor cable low increase manifold pressure or replace with correct orifices Blower speed too low Use faster speed tap or install optional blower Check temperature rise Limit switch cycles main burners Dirty air filters clean or replace Inadequate heating Check temperature rise Registers closed restricted ductwork open or remove restriction Incomplete combustion or lack of combustion air Poor flame characteristics sooting flame or floating flame Check all screws around flue outlets and burner compartment tighten Cracked heat exchanger replace Overfired furnace reduce input or change orifices Check vent for restriction clean as required Check orifice for burner alignment Check heat anticipator setting on thermostat readjust Copyright 1992 Carrier Corporation CATALOG NO BDP 3358 703 PRELIMINARY INFORMATION MODEL NO DATE START UP CHECKLIST Remove and Store in Job File 1 PRE START UP insert checkmark in box as each item is completed O VERIFY THAT ALL PACKING MATERIALS HAVE BEEN REMOVED FROM UNIT SERIAL NO TECHNICIAN REMOVE ALL SHIPPING HOLDDOWN BOLTS AND BRACKETS PER INSTALLATIO
55. gh the low voltage control box and exit out of the bottom of the con trol box to the low voltage junction box Cut leads ap proximately 6 in below control box Pull leads back through hole in bottom of control box Secure leads go ing to junction box using field supplied wire tie 2 Route field low voltage wiring through grommeted hole in panel and into low voltage junction box through hole in bottom of control box 3 Make junctions using field supplied wirenuts as shown on wiring label or Fig 14 Table 4 Recommended Thermostats TYPE PART NO Single Stage Heating and Cooling Manual Changeover HH01PC184 Auto Changeover HH01PC185 Heat Anticipator Setting The room thermostat heat anticipator must be adjusted prop erly to ensure proper heating performance Set the heat an ticipator using an ammeter to determine the exact required setting NOTE For thermostat selection purposes use 1 2 amp for the approximate required setting Failure to make a proper heat anticipator adjustment will result in improper operation discomfort to the occupants of the conditioned space and inefficient energy utilization how ever the required setting may be changed slightly to provide a greater degree of comfort for a particular installation Transformer Circuit Breaker The unit transformer contains an automatic reset overcur rent protector for control circuit protection If this device trips it may reset without warning sta
56. he ICP will continue go ing into a retry mode until the pilot ignites or power is re moved from the terminal If the pilot does ignite the flame is sensed through the flame rectification circuit through FP terminal of the ICP A minimum of 1 ma dc is needed for the sensing circuit but a normal current of 5 to 7 ma should be attained for continued reliable operation The main valve opens and allows gas to flow to the main burners where it is ignited by the pilot When the call for heat has been sat isfied the ICP TDR and IDR are deenergized immediately deenergizing the gas valve and induced draft motor The indoor motor continues to run for approximately 45 to 90 seconds 1 Limit Switches Normally closed limit switch LS completes the control circuit through the thermostat R circuit Should the leaving air tem perature rise above the maximum allowable temperature the limit switch opens and the R control circuit breaks Any in terruption in the R control circuit instantly closes the gas valve and stops gas flow to the burners and pilot The blower motor continues to run until LS resets When the air temperature at the limit switch drops to the low temperature setting of the limit switch the switch closes and completes the R control circuit The electric spark igni tion system cycles and the unit returns to normal heating operation J Auxiliary Limit Switch Blower Blower auxiliary limit
57. ied by local codes and or regulations Table 2 Maximum Gas Flow Capacity of Pipe in Cubic Feet of Gas Per Hour for Gas Pressures of 0 5 Psig or Less and a Pressure Drop of 0 5 in wg Based on a 0 60 Specific Gravity Gas NOMINAL IRON PIPE INTERNAL DIAMETER LENGTH OF PIPE FT tee ESAE 120 197 pw y esposte ee 1 104 680 465 375 320 285 260 240 220 900 1400 770 600 Refer to Table C 4 NFPA 54 1984 This length includes an ordinary number of fittings NOTE Typical natural gas heating value is 1000 Btuh per cu ft For example A 96 000 Btuh input unit equals 96 cu ft per hour or 96 1 000 000 2 96 cu ft hr TEE OUT NIPPLE CAP Fig 11 Sediment Trap Liquid Propane Units are shipped for use with natural gas but may be field converted for use with liquid propane using an accessory LP conversion kit All LP gas equipment must conform to NFPA safety standards The LP gas pressure at the unit must be 10 5 in wg under full load Maintaining proper gas pressure depends on Vaporization rate vaporization rate is determined by the temperature of the LP gas and the level of LP gas in the tank Proper pressure regulation 2 stage regulation is more cost effective and more efficient Pressure drop in lines between regulators and between the second stage regulator and the a
58. ight and do not drop Spreader bars are not required if top crating is left on unit Rollers may be used to move unit across a roof Level by using unit frame as a reference See Table 1 and Fig 8 for additional information Unit weight is shown in Fig 3 and 4 Ifthe installation requires draining the condensate water away from the unit connect a drain tube Do not use pipe size smaller than unit drain connection 24 in NPT Pitch the drain tube downward at a slope of at least 1 inch in every 10 ft of hor izontal run Be sure to check the drain tube for leaks Condensate water can be drained directly onto the roof in roof top installations where permitted or onto a gravel apron in ground level installations When using a gravel apron make sure it slopes away from the unit MINIMUM PITCH ONE INCH PER 10 FEET OF LINE DRAIN ROOF DRAIN PLUG CURB Fig 9 External Trap Condensate Drain B Install Venting The vent cap assembly is shipped in the burner compart ment Remove the access door to locate the assembly 55 22532
59. intended installation Model 587A meets the California maximum oxides of nitro gen NO emission regulations These units are equipped with an energy saving automatic electric intermittent spark ignition system that does not have a continuously burning pilot All units are manufactured with natural gas controls These units are designed for a minimum continuous return air temperature of 60 F dry bulb or an intermittent opera tion down to 55 F dry bulb such as when used with a night setback thermostat All units can be connected into existing duct systems that are sized properly and designed to handle an airflow of 350 to 450 cfm for each 12 000 Btuh of rated cooling capacity NOTE When installing any accessory item see the manu facturer s installation instructions packaged with the acces sory qualified agency must use factory authorized kits or accessories when modifying this unit LOCATE THE UNIT A Clearance Maintain clearance around and above unit to provide mini mum distance from combustible materials proper airflow and service access See Fig 2 4 SERVICE CLEARANCE a OPERATIONAL CLEARANCE Fig 2 Service and Operational Clearances Slab mounted units should be at least 4 in above the highest expected water level flood and runoff Do not use the unit if it has been under water Locate mechanical draft system flue assembly at least 48 in f
60. ir Cfm Evap Air Ewb F Temp F Air Ent 21 0 27 5 27 5 ars 28 680 631 581 532 802 107 148 188 208 228 226 225 t t __ _ 748 120 168 187 207 210 213 uem 394 1 202 p 58 126 146 166 178 199 Lt ot pot pt 06 106 126 146 162 179 ds dot 50998 135 161 186 LEGEND Ewb Entering Wet Bulb SPH Superheat at Compressor F Do not attempt to charge system under these conditions refrigerant slugging may occur Table 12 Required Suction Tube Temperature F Entering Suction Service Valve SUPERHEAT SUCTION PRESSURE AT SERVICE PORT Psig TEMP F 671 7 0 730 760 792 824 857 29 810 9215 09 L 0 2 802 12218 02 LVISOWYSH JOWJOJSURIL uogoeyoid Ad Sd 4002 39V15 319NIS 3 1 39Y15 TIONIS ut ugy pue 1 75 CL ard s yomg einssejd Sd Joyu8 iold Ajddns pjay 0 juo esf 7 1 peog pejuud 224 _ peog UND Bumm 5 2601 wnuwiuiw asn
61. n air grilles according to ASHRAE American Society of Heating Refrigeration and Air Conditioning Engi neers recommendations 3 Use flexible transition between rigid ductwork and unit to prevent transmission of vibration The transition may be screwed or bolted to duct flanges Use suitable gas kets to ensure weathertight and airtight seal 4 When horizontal return is used install external field supplied air filter s in return air ductwork where it is easily accessible for service Recommended filter sizes are shown in Table 1 5 Size all ductwork for maximum required airflow either heating or cooling for unit being installed Avoid abrupt duct size increases or decreases 6 Adequately insulate and weatherproof all ductwork lo cated outdoors Insulate ducts passing through uncon ditioned space and use vapor barrier in accordance with latest issue of SMACNA Sheet Metal and Air Condi tioning Contractors National Association and ACCA Air Conditioning Contractors of America minimum instal lation standards for heating and air conditioning systems Secure all ducts to building structure 7 Flash weatherproof and vibration isolate all openings in building structure in accordance with local codes and good
62. nergized contactor C close and complete the circuit through compressor motor COMP and condenser fan motor OFM Both motors start instantly The set of normally open contacts of energized relay IFR1 closes and completes the circuit through evaporator blower motor IFM The blower motor starts instantly NOTE Once the compressor has started and then has stopped it cannot be started again until 5 minutes have elapsed NOTE The cooling cycle remains on until the room tem perature drops to point that is slightly below the cooling con trol setting of the room thermostat At this point the ther mostat breaks the circuit between thermostat terminal R to terminals Y and G These open circuits deenergize C and IFR The condenser and compressor motors stop and after a 45 second delay the blower motor stops The unit is in a standby condition waiting for the next call for cooling from the room thermostat eee f e Unit Sizes 048 060 On a call for cooling 24 v is supplied to the compressor con tactor C and indoor fan relay IFR simultaneously through the Y and G terminals of the thermostat respectively En ergizing the contactor closes the normally open set of con tacts supplying power to both the compressor and outdoor fan motor OFM Energizing the IFR closes the normally open set of contacts providing power to the IFM On the loss of the call for cooling 24 v is removed from both the Y an
63. ng source or direct exposure to sunlight Mount the thermostat 4 to 5 ft above the floor Use no 18 AWG color coded insulated 35 C minimum wires to make the control voltage connections between the thermo stat and the unit If the thermostat is located more than 100 ft from the unit as measured along the control voltage wires use no 16 AWG color coded insulated 35 C mini mum wires grommeted control voltage inlet hole is located in the panel adjacent to the control access panel See Fig 3 and 4 To make connections Unit Sizes 018 042 1 Run the low voltage leads from the thermostat through the inlet hole and to the control voltage terminals through a hole in the bottom of the unit control box 2 Pass control voltage leads through wire ties located un der unit control box 3 Connect the thermostat leads to the terminals as shown in Fig 14 Unit Sizes 048 060 Standard Control Entry Location Knockouts Located on Unit Duct Panel 1 With knockouts removed relocate rubber grommet from alternate low voltage entry to 7s in diameter knockout hole on duct panel 2 Route field low voltage wire through hole in grommet leaving excess wire external to unit to form drip loop 3 Connect leads using field supplied wire nuts as shown in Fig 14 4 Replace blower access panel Unit Sizes 048 060 Alternate Control Entry Location Knockouts Located Near Control Box 1 Locate the low voltage leads that pass throu
64. om temperature 3 Observe that after built in time delays the pilot auto matically lights the burners light and the blower motor starts Observe that the burners and pilot go out and that after a built in delay the blower motor stops when the heating control setting of the thermostat is satisfied B Gas Input Check gas input and manifold pressure after unit start up See Table 6 If adjustment is required proceed as follows The rated gas inputs shown in Table 6 are for altitudes from sea level up to 2000 ft above sea level These inputs are based on natural gas with a heating value of 1050 Btwft at 0 65 specific gravity or LP gas with a heating value of 2500 Btu ft at 1 5 specific gravity For elevations above 2000 ft reduce input 4 for each 1000 ft above sea level When the gas supply being used has a different heating value or specific gravity refer to national and local codes or contact your distributor to determine the required orifice size C Adjusting Gas Input The gas input to the unit is determined by measuring the gas flow at the meter or by measuring the manifold pressure Measuring the gas flow at the meter is recommended for nat ural gas units The manifold pres
65. peoejde eq Buisues Sswej4 10184 d snw peiddns se asm euiBuo jo Aue j 4 JoOopjnO uoneyueseudei eoujoeje ue SJOGW S 72 BARA AW YN uos 1 jo NYO uoneie YOUMS eunsseJg Sd1 dO 802 204 uMous se uogejedo 022 plougjos eur S11 S310N CL s d Q Aey ul JOJOW Jeonpu WI opu NDI CL S d S key Uey j00pu 2941 O N Cr a ds uey J00pu Wal SEO AD punog jueuudinb3 53 10 yejsouey 10 10ss sdwop aLo uonoeuuo 1099900 pede 2 uonoeuuo payen uny 2 pied Gnojou L S d S yomg 261 yH O N CL S d S uDIH plaid am yams 161 mmi ZN Md M _ Ave 12 NYO gt e 802 13 0 59215 09 1 022 802 122 4 12 614 JVISOWYSHL
66. perates continuously Dirty air filter Replace filter Unit undersized for load Decrease load or increase unit size Dirty air filter Replace filter Excessive head pressure Dirty condenser coil Clean coil Refrigerant overcharged Remove and reclaim excess refrigerant Air in system Evacuate and reclaim refrigerant from system and recharge Head pressure too low ere am Excessive suction Suction pressure too low Check for leaks repair and recharge Insufficient evaporator airflow Increase air quantity Check filter replace if necessary Temperature too low in conditioned area Reset thermostat Outdoor ambient below 45 F unit size 018 55 F Install low ambient kit unit sizes 024 042 or 40 F unit sizes 048 060 Field intalled fiter drier restricted Refrigerant overcharge or undercharge Evacuate and reclaim refrigerant from system and recharge to nameplate Thermostat set too low Reset thermostat Low refrigerant charge Locate leak repair and recharge Air in system Evacuate and reclaim refrigerant from system and recharge Defective compressor Replace and determine cause Condenser coil dirty or restricted Clean coil or remove restriction Compressor motor burner out seized or internal Determine cause Replace compressor overload open 33 TROUBLESHOOTING Heating SYMPTOM CAUSE REMEDY No heat LED is flashing Look for problems external to the ignitor modul
67. peration 208 230 v units interchange motor leads to high speed for cooling and medium speed for heating operation Table 7 shows the temperature rise at various airflow rates Tables 8A 8B 9A and 9B show both heating and cooling air flows at various external static pressures Refer to these ta bles to determine the airflow for the system being installed See Table 10 for wet coil pressure drop NOTE Be sure that all supply and return air grilles are open free from obstructions and adjusted properly The heating and or cooling airflow of 208 230 v blower mo tors can be changed by changing the lead connections of the blower motor The motor leads are color coded as follows red low speed blue medium speed black high spee A Adjust Evaporator Fan Speed Unit Sizes 018 042 The red motor lead connected to the heat relay L on PC1 blower control determines the heating speed and resulting airflow and the blue motor lead connected to the cooling re lay H on blower control determines the cooling speed and resulting airflow See the unit wiring label To change the heating and or cooling speed of a motor con nect the appropriate color coded lead at blower motor con nector to speed tap desired See unit wiring label Unit Size 048 To change heating and cooling speed for unit size 048 con nect the black lead at blower motor connector to speed tap desired See unit wiring label Unit Size 060
68. ppliance Pipe size is de termined by the length of the pipe run and the total load of all appliances Contact your LP gas supplier or regulator manufacturer for further details regarding tank sizing recommended regula tor settings and pipe sizing Special pipe compound must be used when assembling pip ing for LP gas as white lead or commercial compounds will be dissolved easily Use a shellac based compound suitable for use with LP D Field Duct Connections NOTE The design and installation of the duct system must be in accordance with the standards of for the instal lation of nonresidence type air conditioning and ventilating systems NFPA 90 or residence type 90B and or lo cal codes and ordinances The 587A units have duct flanges on the supply and return air openings on the side unit sizes 018 042 only and bottom of the unit Adhere to the following criteria when selecting sizing and installing the duct system 1 Unit sizes 018 042 are shipped in the downflow config uration To convert to horizontal discharge remove hor izontal duct opening covers Using the same screws in stall covers with insulation side up facing inside on the unit on downflow duct openings Seals around duct open ings must be tight Unit sizes 048 and 060 are shipped with all 4 duct open ings covered Remove appropriate panels for intended installation 2 Select and size ductwork supply air registers and retur
69. pressure tested after the gas supply piping has been connected to the unit gas valve the following procedures must be observed When pressure testing the gas supply piping system at test pres sure exceeding 0 5 psig supply piping must be disconnected from the gas valve When pressure testing the gas supply system at test pressure less than or equal to 0 5 psig the unit heating section must be isolated from the gas piping system by closing the exter nal main manual shutoff valve and slightly opening the ground joint union 8 Check for gas leaks at all field installed and factory installed gas lines after all piping connections have been completed Use soap and water solution or method spec if
70. r coil icing may occur at airflows below this point Water blow off may occur at airflows above 450 cfm per 12 000 Btuh of rated cooling capacity i 2 Fan speed is based on pulley ratios and motor nameplate speed of 1580 rpm 526 600 956 a6 65 6 6 2 Co N Q N o 060080 060100 060120 91 Table 9A Dry Coil Air Delivery Downflow Discharge at 208 V 87a MOTOR AIR EXTERNAL STATIC PRESSURE in wg SPEED DELERY 90 64 92 03 04 os os 98 93 16 x as ee T 920 790 685 550 455 t t t t a35 318 25 270 26 t t t t oe es goo 778 7 1 E 373 320 307 202 277 268 94 188 1102 104 906 942 8 amp 0 835 770 708 645 580 024060 PR 463 330 306 282 263 o 1808 1284 1162 1084 1020 951 879 S09 740 670 __60 S er i Haer 7 tee 030040 822 790 030060 Wais 600 582 9 iii 1362 1326 1249 1195 1133 950 887 _ 820 030080 1430 429 442 395 042000 1615 1596 270 5 1 Watts 70 537 509 165 939
71. rain cleanout or Roto Rooter cable Use diameter wire brush commonly known as 25 caliber rifle cleaning brush NOTE The items called for above can be purchased at a lo cal hardware store 11 12 13 14 15 1 Insert twisted wire end of brush into end of spring cable and crimp tight with crimping tool or strike with ball peen hammer Tightness is very important 2 Remove metal sleeve from wire brush to allow proper brush action b Clean each heat exchanger cell 1 Attach variable speed reversible drill to end of spring cable end opposite brush 2 Insert brush end of cable into upper opening of cell and slowly rotate with drill Do not force ca ble Gradually insert at least 3 ft of cable into 2 upper passes of cell 3 Work cable in and out of cell 3 or 4 times to ob tain sufficient cleaning Do not pull cable with great force Reverse drill and gradually work ca ble out 4 Remove burner assembly 5 Insert brush end of cable in lower opening of cell and proceed to clean in same manner 6 Repeat above procedures until each cell in unit has been cleaned 7 Using vacuum cleaner remove residue from each cell 8 Using vacuum cleaner with soft brush attach ment clean burner assembly 9 Reinstall burner assembly After cleaning check sealant and gaskets to ensure that they have not been damaged If new sealants or gas kets are needed contact your distributor
72. rom any opening through which combustion products could enter the building and at least 30 in from an adjacent build ing When unit is located adjacent to public walkways flue assembly must be at least 7 ft above grade Flue gas can deteriorate building materials Orient unit so that flue gas will not affect building materials Adequate combustion air space must be provided for proper operation of this equipment Be sure that installation com plies with all local codes Flue vent discharge must have a minimum horizontal clear ance of 4 ft from electric meters gas meters gas regulators and gas relief equipment B Rooftop Installation The condenser fan discharges through the top of the unit En sure that the fan discharge does not recirculate to the con denser coil Do not locate the unit either in a corner or under a complete overhead obstruction and ensure the following clear ances are provided On roof overhangs provide a minimum clearance of 48 in above the top of the unit for partial overhangs such as a nor mal house roof overhang If there is a horizontal extension on the partial overhang it must not exceed 48 inches
73. rting the heating or cooling section of this product Use caution when servicing if over current protector continues to trip there is a problem in the low voltage electrical circuit such as an electrical short ground or transformer overload Disconnect power correct the con dition and check for normal unit operation 12 THERMOSTAT TYPICAL tected see Repairing Refrigerant Leaks section on 2 S z A TERMINAL BOARD page 25 c Inspect all field and factory wiring connections Be CONTACTOR TERMINALS sure that connections are completed i SEE UNIT WIRING LABEL p and tight POWER SUPPLY CONTROL BOX FIELD SUPPLIED GND FUSED DISCONNECT UNIT SIZES 018 042 THERMOSTAT TYPICAL CONTACTOR TERMINALS ALTERNATE POWER ENTRY ONLY 4 9 0 SEE UNIT WIRING LABEL FIEL
74. sembly by marking blower wheel and motor in relation to blower housing before disassembly e Loosen setscrew s that secures wheel to motor shaft Then remove screws that secure motor mount brack ets to housing and slide motor and motor mount out of housing 2 Lubricate motor as follows a Thoroughly clean all accumulations of dirt or grease from motor housing b Remove dust caps or plugs from oil ports located at each end of motor c Use a good grade of SAE 20 nondetergent motor oil and put one teaspoon 5 cc 346 ounce or 16 to 25 drops in each oil port d Allow time for oil to be absorbed by each bearing then wipe excess oil from motor housing e Replace dust caps or plugs in oil ports 3 Remove and clean blower wheel as follows a Ensure proper reassembly by marking wheel orien tation and cutoff plate location b Remove screws holding cutoff plate and remove plate from housing Lift wheel from housing When handling and or clean ing blower wheel be sure not to disturb balance weights clips on blower wheel vanes d Remove caked on dirt from wheel and housing with a brush Remove lint and or dirt accumulations from wheel and housing with vacuum cleaner using soft brush attachment Remove grease and oil with mild solvent e Reassemble wheel and cutoff plate into housing f Reassemble motor into housing Be sure setscrews are tightened on motor shaft flats and not on round part of shaft
75. specting the coils Clean the drain pan and condensate drain 25 by removing all foreign matter from the pan Flush the pan and drain tube with clear water Do not splash water on the insulation motor wiring or air filter s If the drain tube is restricted clear it with a plumbers snake or similar probe device D Condenser Fan AS Remove control and compressor access panels Inspect the fan blades for cracks or bends each year Ensure that blades clear the motor by no more than inch If the blade assembly has slipped down the motor shaft adjust the fan position on the motor shaft by loosening the setscrew then moving the blade assembly up Be sure that the setscrew is on the flat of the motor shaft before tightening E Pilot Inspect the pilot and clean when necessary at the begin ning of each heating season Remove the accumulation of soot and carbon from the pilot The pilot flame must be high enough for proper contact with the flame sensor Pilot flame also must come in contact with the pilot hood target for proper oper ation If the pilot flame appears too hard lifting and blow ing or too soft unstable check inlet gas pressure for proper value See Table 6 The spark electrode must be located so the spark travels through a combustible mixture of gas If
76. sure must be measured to determine the input of LP gas units 1 Measuring Gas Flow at Meter Method Natural Gas Units Minor adjustment can be made by changing the manifold pres sure The manifold pressure must be maintained between 3 2 and 3 8 in wg If larger adjustments are required change main burner orifices following the recommendations of na tional and local codes NOTE All other appliances that use the same meter must be turned off when gas flow is measured at the meter Proceed as follows a Turn off gas supply to unit b Remove pipe plug on outlet of gas valve then con nect manometer at this point Turn on gas to unit c Record number of seconds for gas meter test dial to make one revolution d Divide number of seconds in Step c into 3600 num ber of seconds in one hour e Multiply result of Step d by the number of cubic feet shown for one revolution of test dial to obtain cubic feet of gas flow per hour f Multiply result of Step e by Btu heating value of gas to obtain total measured input in Btuh Consult the local gas supplier if the heating value of gas is not known Example Assume that the size of test dial is one cubic foot one revolution takes 30 seconds and the heating value of the gas is 1050 Btu ft Proceed as follows a 30 seconds to complete one revolution b 3600 30 120 c 120 x 1 120 ft of gas flow hr d 120 x 1050 126 000 Btuh input If the desired gas input is
77. t require unit top removal Refer to the following top removal procedures 1 Turn off gas supply then turn off electric power to unit 2 Remove all screws that secure unit top including screws around 4 sides and those on top that screw into internal divider panels Save all screws 3 Tape all side panels at each seam near unit top Use tape strips that are at least 5 in long to prevent sides from falling when top is removed 4 Lift top from unit carefully Set top on edge and ensure that top is supported by unit side that is opposite duct or plenum side Use extreme care to prevent damage to the fan blades motor and insulation 5 Carefully replace and secure unit top to unit using screws removed in Step 2 when maintenance and or service pro cedures are concluded Be sure to use original screws that have rubber washers to seal out water when secur ing top to internal divider panels B Repairing Refrigerant Leaks Proceed as follows to repair a refrigerant leak and to charge the unit 1 Locate leak and ensure that refrigerant system pres sure has been relieved and reclaimed from both high and low pressure ports 2 Repair leak following accepted practices NOTE Install a filter drier whenever the system has been opened for repair 8 Add a small charge of R 22 refrigerant vapor to system and leak test unit 4 Evacuate and reclaim refrigerant from refrigerant sys tem if additional leaks are not found
78. t unit in cooling mode and let unit run until system pressures stabilize 4 Measure and record the following a Outdoor ambient air temperature F db b Evaporator inlet air temperature F wb c Suction tube temperature F at low side service fitting d Suction low side pressure psig 5 Using Field Superheat Charging Table compare outdoor air temperature F db with evaporator inlet air temper ature F wb to determine desired system operating su perheat temperature See Tables 11A 11C 6 Next using Required Suction Tube Temperature F table compare desired superheat temperature with suc tion low side operating pressure psig to determine proper suction tube temperature See Table 12 7 Compare actual suction tube temperature with proper suction tube temperature Using a tolerance of 3 F add refrigerant if actual temperature is more than 3 F higher than proper suction tube temperature remove and reclaim refrigerant if actual temperature is more than 3 F lower than required suction tube temperature NOTE If the problem causing the inaccurate readings is a refrigerant leak refer to Repairing Refrigerant Leaks sec tion on page 25 lil REPLACEMENT PARTS A complete list of replacement parts may be obtained from your distributor upon request 27 FLARE NUT STRAINER RETAINER COOLING PISTON COOLING PISTON TO IDENTIFICATION COIL e PS S FLARE COOLING NUT TO FLOW
79. the unit on a level base that provides proper support On flat roofs be sure that the unit is located at least 4 in above the highest expected water level on the roof to prevent flooding C Ground Level Installation Place the unit on a solid level concrete pad that is a mini mum of 4 in thick with 2 in above grade The pad should extend approximately 2 in beyond the casing on all 4 sides of the unit Install a gravel apron in front of condenser air in lets to prevent obstruction of airflow by grass shrubs etc Do not secure the unit to the pad except when required by local codes NOTE Horizontal units may be installed on a roof curb if required Il UNIT DUCT CONNECTIONS On downflow units secure all ducts to roof curb and building structure On horizontal units all ductwork should be se cured to flanges text continued on page 7 suoisuewig HUN 7188 2 M3IA 331 LA oe NOILSNEWO9 8 E 8 p 96 586 as ZE SZ E em 291 65 Z 81 5 2 91 6 Z L311N0 ide 4721 2 1 b A Gre uu 022 cel IA AF 9 55322 8004 55322 70 81 03 131 5 eBreyosip nO eq 5
80. thermostat FAN switch in ON position The minimum maintenance requirements for this equipment are as follows 1 Inspect air filter s each month Clean or replace when necessary 2 Inspect indoor coil drain pan and condensate drain each cooling season for cleanliness Clean when necessary 3 Inspect blower motor and wheel for cleanliness and check lubrication each heating and cooling season Clean and lubricate if required when necessary 4 Check electrical connections for tightness and controls for proper operation each heating and cooling season Service when necessary 5 Check and inspect heating section before each heating season Clean and adjust when necessary 6 Check and clean vent screen if needed
81. ults in a suction gas superheat of 10 F at the compressor inlet when the unit is operating at the ARI Air Conditioning amp Refrigeration In stitute rating conditions of 95 F db outdoor ambient temper ature and 80 F db 67 F wb indoor ambient temperature See Refrigerant Charge section on page 27 for procedure to check and adjust R 22 charge C Unit Controls Compressor Overload All compressors have an internal overcurrent protection de vice located inside of the compressor This overload inter rupts power to the compressor when the current becomes ex cessive and automatically resets when the temperature drops to a safe level Unit Sizes 018 042 Only The compressor also has an overtemperature protection de vice DT located externally on the compressor This overload interrupts power to the compressor when the temperature be comes excessive and automatically resets when the temper ature drops to a safe level These overloads may require up to 60 minutes or longer to reset therefore if either overload is suspected of being open disconnect the electrical power to the unit and check the cir cuit through the overload with an ohmmeter or continuity tester High Pressure Relief Valve Unit Sizes 048 060 Only Valve opens when the pressure differential between the low and high side becomes excessive Seasonal Energy Efficiency Rating SEER Improvement Relay The unit is equipped with a SEER improvement time dela
82. ve ratchet engaged into in square hole on motor mount ing plate 3 Adjust lock bolt and nut on mounting plate to secure mo tor in fixed position aN STRAIGHTEDGE MUST BE PARALLEL WITH BELT MOVABLE FLANGE MOTOR AND FAN SHAFTS MUST BE PARALLEL SETSCREWS FIXED FLANGE SINGLE GROOVE Fig 17 Evaporator Fan Pulley Adjustment 19 Table 7 Air Delivery Cfm at Indicated Temperature Rise and Rated Heating Input HEATING INPUT Btuh UNIT 587A 018040 024040 030040 030060 03606 024060 030080 036080 042080 036096 042096 NOTE Dashed areas do not fall within the approved temperature rise range of the unit Table 8A Dry Coil Air Delivery Horizontal Discharge at 208 V AIR DELIVERY 2 0 10 lt 10 oio 961 os j iN 431 759 679 600 431 spe 71090 1020 950 08 4 461 227 1105 1019 906 309 28 660 626 595 531 489 445 402 356 05 06 1432 71075 1090 995 O4 EXTERNAL STATIC PRESSURE in wg 505 1134 730 690 464 1221 1142 106 1003 581 Cim 994 909 51 670 451 o1 02 850 810 770 1414 fm Cfm Watts Watts Watts Watts Cfm Waits
83. y 2577 emmm CL S d S 9 95 URIS 16 yams Areyixny 438 e 802 1 TSA BA _0 Ldv3 4 15 3 4 0 CANO 290 at 13A ud 134 31 LEGEND ALS Auxiliary Limit Switch S P S T C Contactor CAP 1 2 Capacitors CH Crankcase Heater COMP Compressor CTD Compressor Time Delay EG Equipment Ground FP Pilot Flame Sensing GV Gas Valve ICP ignitor Control IDR Induced Draft Relay S P S T IDM Induced Draft Motor IFM Indoor Fan Motor IFR Indoor Fan Relay S P S T IP Internal Protector Auto Reset LS Limit Switch S P S T MV Main Valve OFM Outdoor Fan Motor PI Pilot Ignitor PS Pressure Switch S P D T PV Pilot Valve RS Rollout Switch S P D T TB Terminal Block TDR Time Delay Relay S P S T TRAN Transformer am Field High Voltage Wiring Factory High Voltage Wiring Factory Low Voltage Wiring Field Low Voltage Wiring Marked Connection Unmarked Connection Internally Connected Wirenut Field Splice NOTES 1 230 v operation as shown For 208 v operation reverse RED and ORN leads of transformer Transformer has internal automatic reset overload If any of the original wire as supplied must be replaced use min imum 1
84. y relay which will hold the evaporator fan contactor in for 45 seconds for unit sizes 018 042 and 30 seconds for unit sizes 048 and 060 when the call for cooling is satisfied This time allows the air to absorb additional cooling from the cooling coil Controls Kits Accsssory Low Pressure Switch LPS Kit When the refrigerant low side pressure drops below 27 psig the LPS opens 24 v power to the compressor contactor and stops the compressor When the pressure reaches 60 psig the switch resets and the com pressor is allowed to come back on High Pressure Switch HPS Kit When the refrigerant high side pressure reaches 428 psig the HPS opens 24 v power to the compressor contactor and stops the compressor When the pressure drops to 320 psig the switch resets and the com pressor is allowed to restart D Cooling Sequence of Operation Unit Sizes 018 042 With the room thermostat SYSTEM switch in the COOL po sition and the FAN switch in the AUTO position the cooling sequence of operation is as follows When the room temperature rises to a point that is slightly above the cooling control setting of the thermostat the ther mostat completes the circuit between thermostat terminal R to terminals Y and G These completed circuits through the thermostat connect contactor coil C through unit wire Y and relay coil IFR1 through unit wire G across the 24 v second ary of transformer TRAN The normally open contacts of e

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