John Deere 6430 ROPS Lawn Mower User Manual
Contents
1. AC 1A Single Stage Air Conditioner PSC Air Handler ID MODELS AHP SHP MA THERMOSTAT PSC SINGLE STAGE PP11C70224 AIR AIR HANDLER CONDITIONER PSC 1 SINGLE STAGE AIR HANDLER CONTROL AIR CONDITIONER COM C 24 Volt Common 24 Volt Common y Y 2 y Second or Full Full Stage Compressor S Compressor Contactor tage Compressor RH R 24 Volt Hot Heat XFMR 24 Volt Hot G G Fan Fan W2 Second Stage Heat EC y1 Zo v e Single Stage Compressor Cool XFMR A P O Reversing Valve Energized in Cool X L Malfunction Light W W1 Full Stage Heat First Stage Heat HM1 24V AC Humidifier wae oan gt Optional uMIGIty OWITC eer Ce Open on Humidity Rise HUM OUT 24VAC 24 VAC out Electronic Air Cleaner Humidifier Optional EAC 24 VAC out Clipping Jumper W914 for Electronic Air Cleaner electric heat on thermostat is not necessary Move HUM STAT jumper to YES if humidistat is to be used Refer to AH documentation for W1 and W2 electric heat staging options Part Numbers SAP Legacy 159480 031 09156 FIGURE 9 Thermostat Chart Single Stage AC with PSC Air Handler Johnson Controls Unitary Products 347337 UIM A 0408 AC 1B Single Stage Air Conditioner PSC Air Handler2. R 22 OUTDOOR SPLIT SYSTEM AIR CONDITIONING MODELS 13 SEER a C t eee a ion 4 mr b A E a E oa ALA 1 Ey lt A A T l l A M E A E aA ae KEES OO y A a a l MM le b E aaan y T lt E l E e leat ae Ov E shlul St CG ha EZ TOE VU a WS mi 2 7 1 yy Pai NHN 1 EZ Ct E ee lO eee T E o o T aaa A O O aaa N Ee Oh O i UW o o T E eee Oe oe A M M M i Y l A A A E M A i MA E E A I Ml OT A CR T ooa T E oa ECO Elem GC Li aaan R o A E I E EA M l M E M A CCE A aU F A i MA A M A y E i E ood E E A E l A El f 7 O G E I E A A iE M a X le lM i kt si i S I E A CT CCDS M M E M i A i M M I E eee ee E I E aaa LU eee O ee ee ee a CE A EEE G t CidE I COC SEC OE O A El 46 EE CI eo consume N S Good Housekeeping ey piian lt oe TPR ht PepenRMANCE ERP RTIFIED Ti ARI Standard 210 240 Unitary Air Conditioners U L CYLoL JUS 4 AY018 030 SERIES Dra LISTED eoo LIST OF SECTIONS GENERAL i cccstiiestudcesagetehesedees int test aead ewe ee oe 1 INSTALLATIONS REQUIRING AN ADD ON TXV KIT 5 SAFETY lt xduraeicvceuw ae presen eeeweeuwe eres Grt ee wae siete 1 EVACUATION i 232554 20s en tows p it oere eu boon eee 0 5
3. ee e ee G G G Fan Fan Fan W Full Stage Heat RC RC 24 Volt Hot 24 Volt Hot Cool XFMR Cool XFMR W W Full Stage Heat Full Stage Heat 2 External Humidistat Optional TER Open on Humidity Rise pmm a o Thermostat Installer Setup 1 System Type must be set to 0 Selection of GAS ELEC switch on thermostat is not necessary Thermostat Installer Setup 15 Compressor Protection must be set to 5 Part Number 1 2HU16700124 Other Part Numbers SAP Legacy 265901 031 09166 FIGURE 12 Thermostat Chart Single Stage AC with PSC Furnace 10 Johnson Controls Unitary Products INDICATIONS OF PROPER OPERATION Cooling 1 The outdoor fan should be running with warm air being dis charged from the top of the unit 2 The indoor blower furnace or air handler will be operating dis charging cool air from the ducts Coils or other parts in the air cir cuit should be cleaned as often as necessary to keep the unit clean Use a brush vacuum cleaner attachment or other suitable means 3 The vapor line at the outdoor unit will feel cool to the touch 4 The liquid line at the outdoor unit will feel warm to the touch Instructing the Owner Assist owner with processing warranty cards Review Owners Guide and provide a copy to the owner and guidance on proper operation and maintenance Instruct the owner or the operator how to start stop and adjust temperat
4. Mount the thermostat about 5 ft above the floor where it will be exposed to normal room air circulation Do not place it on an out side wall or where it is exposed to the radiant effect from exposed glass or appliances drafts from outside doors or supply air grilles 6 Route the 24 volt control wiring NEC Class 2 from the outdoor unit to the indoor unit and thermostat NOTE To eliminate erratic operation seal the hole in the wall at the thermostat with permagum or equivalent to prevent air drafts affecting the operation of in the thermostat ALL FIELD WIRING TO BE IN ACCORDANCE WITH ELECTRIC CODE NEC AND OR LOCAL CODES POWER WIRING 208 230 1 60 NEC CLASS 2 TERMINAL W IS ONLY CONTACTOR TERMINALS R COIL CONDENSING UNIT REQUIRED ON SYSTEMS A WITH HEAT POWER WIRING CONTROL WIRING FACTORY WIRING 24 VOLT CONTROL WIRING MINIMUM 18 GA WIRE FURNACE OR AIR HANDLER TERMINAL BLOCK Ome e Ginn 4S Gro 46 p ROOM THERMOSTAT ALL OUTDOOR WIRING MUST BE WEATHERPROOF USE COPPER CONDUCTORS ONLY FIGURE 8 Typical Field Wiring Air Handler Electrical Heat Johnson Controls Unitary Products 347337 UIM A 0408 For additional connection diagrams for all UPG equipment refer to Low Voltage System Wiring document available online at www upgnet com in the Product Catalog Section
5. STAGE SINGLE STAGE PP11C70224 PSC AIR FURNACE CONDITIONER SINGLE STAGE PSC 1 SINGLE STAGE FURNACE AIR CONDITIONER C 24 Volt Common 24 Volt Common Y Y2 Y Full Stage Compressor Full Stage Compressor Compressor Contactor RH R 24 Volt Hot Heat XFMR 24 Volt Hot G G Fan Fan W Full Stage Heat RC 24 Volt Hot Cool XFMR W Full Stage Heat HM1 24VAC Humidifier Humidistat Optional Clipping Jumper W914 for electric heat on thermostat is not necessary Other Part Numbers SAP Legacy 265901 031 09166 FIGURE 11 Thermostat Chart Single Stage AC with PSC Furnace Johnson Controls Unitary Products 347337 UIM A 0408 AC 5E Single Stage Air Conditioner Single Stage PSC Furnace ID MODELS G 8 9 S GF 8 9 G 9F LF8 L Y M 8S TG 8 9 S THERMOSTAT THERMOSTAT o GGLS eis ecsboenpae SINGLE STAGE SINGLE STAGE BN11C01124 BN11C00124 DP11C40124 PSC AIR DN11C00124 FURNACE CONDITIONER SINGLE STAGE PSC T SINGLE STAGE FURNACE AIR CONDITIONER C C C C 24 Volt Common 24 Volt Common 24 Volt Common 24 Volt Common Y Y Y Y2 Y Full Stage Compressor Full Stage Compressor Full Stage Compressor Compressor Contactor RH RH R 24 Volt Hot 24 Volt Hot Heat XFMR Heat XFMR
6. total system refrigerant charge is retained within the outdoor unit during shipping and installation The reusable service valves are pro vided to evacuate and charge per this instruction Serious service problems can be avoided by taking adequate precau tions to assure an internally clean and dry system A CAUTION Dry nitrogen should always be supplied through the tubing while it is being brazed because the temperature required is high enough to cause oxidation of the copper unless an inert atmosphere is pro vided The flow of dry nitrogen should continue until the joint has cooled Always use a pressure regulator and safety valve to insure that only low pressure dry nitrogen is introduced into the tubing Only a small flow is necessary to displace air and prevent oxidation PRECAUTIONS DURING BRAZING SERVICE VALVE Precautions should be taken to prevent heat damage to service valve by wrapping a wet rag around it as shown in Figure 5 Also protect all painted surfaces insulation and plastic base during brazing After braz ing cool joint with wet rag This is not a backseating valve The service access port has a valve core Opening or closing valve does not close service access port If the valve stem is backed out past the chamfered retaining wall the O ring can be damaged causing leakage or system pressure could force the valve stem out of the valve body possibly causing personal injury Valve can be open
7. ALVE 13 Replace plunger cap finger tight then tighten an additional 1 12 turn 1 2 hex flat Cap must be replaced to prevent leaks Never attempt to repair any brazed connections while the system is under pressure Personal injury could result See System Charge section for checking and recording system charge Supplied with the outdoor unit is a Schrader Valve Core and Orifice for highest sales volume indoor coil The valve core must be installed in equalizer fitting of the indoor coil SECTION IV ORIFICE INSTALLATION Failure to install Schrader Valve Core on orifice applications could result in total refrigerant loss of the system Install Schrader Valve Core as follows 1 Slide indoor coil out of cabinet far enough to gain access to equal izer fitting on the suction line 2 After holding charge is completely discharged remove black plas tic cap on equalizer fitting 3 Install Schrader Valve Core supplied with the outdoor unit into equalizer fitting using a valve core tool 4 Loosen and remove the liquid line fitting from the orifice distributor assembly Note that the fitting has right hand threads 5 Install proper size orifice supplied with outdoor unit Refer to sup plied Tabular Data Sheet for specific orifice size and indoor coil match up 6 After orifice is installed reinstall the liquid line to the top of the ori fice distributor assembly Hand tighten and turn an additional 1 8
8. SIDE 48 OVERHEAD CLEARANCE THERMOSTAT WEATHERPROOF ee DISCONNECT SWITCH 12 CLEARANCE AROUND PERIMETER NOTE ALL OUTDOOR WIRING MUST BE WEATHERPROOF CONTROL ACCESS PANEL FIGURE 1 Typical Installation GROUND INSTALLATION The unit should be installed on a solid base that is 2 above grade and will not shift or settle causing strain on the refrigerant lines and possible leaks Maintain the clearances shown in Figure 1 and install the unit ina level position The base pad should not come in contact with the foun dation or side of the structure because sound may be transmitted to the residence The length of the refrigerant tubing between the outdoor unit and indoor coil should be as short as possible to avoid capacity and efficiency losses Excessive spacing of the outdoor unit from the home can result in the refrigerant lines being restricted by trampling or being punctured by lawn mowers Locate the outdoor unit away from bedroom windows or other rooms where sound might be objectionable Adverse effects of snow or sleet accumulating on the outdoor coil can be eliminated by placing the outdoor unit where the prevailing wind does not blow across the unit Trees shrubs corners of buildings and fences standing off from the coil can reduce capacity loss due to wind chill effect Provide ample clearance from shrubs to allow adequate air to pass across the outdoor coil without leaves or branches being pulled int
9. THERMOSTAT THERMOSTAT BP11C50124 BN11C01124 x POMI OOTAMA T i icai DN11C00124 C C 24 Volt Common 24 Volt Common Y Y Full Stage Compressor Full Stage Compressor RH RH 24 Volt Hot 24 Volt Hot Heat XFMR Heat XFMR G G Fan Fan RC RC 24 Volt Hot 24 Volt Hot Cool XFMR Cool XFMR W W Full Stage Heat Full Stage Heat ID MODELS AHP SHP MA PSC AIR HANDLER SINGLE STAGE AIR CONDITIONER COM 24 Volt Common 24 Volt Common Y Y2 Second or Full Stage Compressor Y Compressor Contactor R 24 Volt Hot G Fan W2 Second Stage Heat Y1 Single Stage Compressor O Reversing Valve Energized in Cool X L Malfunction Light W1 First Stage Heat HUM Humidity Switch Open on Humidity Rise 24VAC Humidifier HUM OUT Optional q 24 VAC out Humidifier 24VAC Electronic Air Cleaner OE PR Rees Optional ectronic Air Cleaner FIGURE 10 Thermostat Chart Single Stage AC with PSC Air Handler Johnson Controls Unitary Products 347337 UIM A 0408 AC 5D Single Stage Air Conditioner Single Stage PSC Furnace ID MODELS G 8 9 S GF 8 9 G 9F LF8 L Y M 8S TG 8 9 S THERMOSTAT G8C G T GLS SINGLE
10. UNIT INSTALLATION 232 200 ceews daciews teases tw cee ewaeme ce 2 SYOIEM CHARGE acicciceincewsn cas ceeer dere ARENELE 5 ORIFICE INSTALLATION 00 cece ee eee eee eee 4 ELECTRICAL CONNECTIONS 0 cc eee eee eee eee 6 LIST OF FIGURES Typical Installation ino keen ced sad ined dine sexew we ste sehad 2 Outdoor Unit Control Box 2 anaana aaae 6 ARD sca teces deus bee ets a ee heeneee ese 3 Typical Field Wiring Air Handler Electrical Heat 6 Installation of Vapor Line 0 0 00 c ee 3 Thermostat Chart Single Stage AC with PSC Air Handler 7 Underground Installation 0 0 00 3 Thermostat Chart Single Stage AC with PSC Air Handler 8 Heat Protection 4 64 ends dade he Gan dse ee OEdee se oe ooan5504 4 Thermostat Chart Single Stage AC with PSC Furnace 9 Orifice Installation is icc coe ee ee ae es Fo eS Se ee Bal woe OR Ee 4 Thermostat Chart Single Stage AC with PSC Furnace 10 LIST OF TABLES Application Limitations 0 0000 e eee 1 R 22 Saturated Properties 0 0 eee 5 SECTION I GENERAL The outdoor units are designed to be connected to a matching indoor coil with sweat connect lines Sweat connect units are factory charged with refrigerant for a matching indoor coil plus 15 feet of field supplied lines The refrigerant charge may need to be changed for some indoor out door unit combinations elevation differences or t
11. chanical codes INSPECTION As soon as a unit is received it should be inspected for possible dam age during transit If damage is evident the extent of the damage should be noted on the carrier s delivery receipt A separate request for inspection by the carrier s agent should be made in writing See Local Distributor for more information LIMITATIONS The unit should be installed in accordance with all National State and Local Safety Codes and the limitations listed below 1 Limitations for the indoor unit coil and appropriate accessories must also be observed 2 The outdoor unit must not be installed with any duct work in the air stream The outdoor fan is the propeller type and is not designed to operate against any additional external static pressure 3 The maximum and minimum conditions for operation must be observed to ensure a system that will give maximum performance with minimum service TABLE 1 Application Limitations Ambient Air Temperature on Outdoor Coil Air Temperature on Indoor Coil 15 F 4 The unit should not be operated at outdoor temperatures below 50 F without an approved low ambient operation accessory kit installed 347337 UIM A 0408 347337 UIM A 0408 SECTION Ill UNIT INSTALLATION LOCATION Before starting the installation select and check the suitability of the location for both the indoor and outdoor unit Observe all limitations and clearance requirements The out
12. cified line size could result in oil return problems Using too small a line will result in loss of capacity and other problems caused by insufficient refrigerant flow Slope horizontal vapor lines at least 1 every 20 feet toward the out door unit to facilitate proper oil return OIL TRAPPING When the outdoor unit is above the indoor coil oil trapping is necessary An oil trap should be provided for every 20 ft of rise See Figure 2 OUTDOOR COIL 10 n gt 20 Ft INDOOR 6 In COIL 20 Ft EJ vy FIGURE 2 Oil Trap PRECAUTIONS DURING LINE INSTALLATION 1 Install the lines with as few bends as possible Care must be taken not to damage the couplings or kink the tubing Use clean hard drawn copper tubing where no appreciable amount of bending around obstruction is necessary If soft copper must be used care must be taken to avoid sharp bends which may cause a restriction 2 The lines should be installed so that they will not obstruct service access to the coil air handling system or filter 3 Care must also be taken to isolate the refrigerant lines to minimize noise transmission from the equipment to the structure 4 The vapor line must be insulated with a minimum of 1 2 foam rub ber insulation Armaflex or equivalent Liquid lines that will be exposed to direct sunlight high temperatures or excessive humid ity must also be insulated 5 Tape and suspend the refrigerant lines as shown DO NOT a
13. door unit includes enough charge for the unit a 15 ft line set and the smallest indoor coil match up Some indoor coil matches may require additional charge See tabular data sheet provided in unit literature packet for charge requirements A CAUTION Do not leave the system open to the atmosphere The TOTAL SYSTEM CHARGE must be permanently stamped on the unit data plate Total system charge is determined as follows 1 Determine outdoor unit charge from tabular data sheet 2 Determine indoor coil adjustment from tabular data sheet 3 Calculate the line charge using the tabular data sheet if line length is greater than 15 feet 4 Total system charge item 1 item 2 item 3 5 Permanently stamp the unit data plate with the total amount of refrigerant in the system Use the following charging method whenever additional refrigerant is required for the system charge TABLE 2 R 22 Saturated Properties 347337 UIM A 0408 Refrigerant charging should only be carried out by a qualified air conditioning contractor A CAUTION Compressor damage will occur if system is improperly charged On new system installations charge system per tabular data sheet for the matched coil and follow guidelines in this instruction If a calibrated charging cylinder or accurate weighing device is avail able add refrigerant accordingly Otherwise model specific charging charts are provided on
14. door unit must have sufficient clearance for air entrance to the condenser coil air discharge and service access See Figure 1 NOTE For multiple unit installations units must be spaced a minimum of 18 inches apart coil face to coil face If the unit is to be installed on a hot sun exposed roof or a black topped ground area the unit should be raised sufficiently above the roof or ground to avoid taking the accumulated layer of hot air into the outdoor unit Provide an adequate structural support ADD ON REPLACEMENT RETROFIT The following steps should be performed in order to insure proper sys tem operation and performance 1 Change out the indoor coil if required to an approved R 22 coil condensing unit combination with the appropriate metering device 2 Ifthe outdoor unit is being replaced due to a compressor burnout then installation of a 100 activated alumina suction line filter drier in the suction line is required in addition to the factory installed liquid line drier Operate the system for 10 hours Monitor the suction drier pressure drop If the pressure drop exceeds 3 psig replace both the suction line and liquid line driers After a total of 10 hours run time where the suction line pressure drop has not exceeded 3 psig replace the liquid line drier and remove the suction line drier Never leave a suction line drier in the system longer than 50 hours of run time MINIMUM 24 SERVICE ACCESS CLEARANCE ON ONE
15. ed by removing the plunger cap and fully inserting a hex wrench into the stem and backing out counter clockwise until valve stem just touches the chamfered retaining wall 347337 UIM A 0408 Connect the refrigerant lines using the following procedure 1 Remove the cap and Schrader core from both the liquid and vapor service valve service ports at the outdoor unit Connect low pres sure nitrogen to the liquid line service port 2 Braze the liquid line to the liquid valve at the outdoor unit Be sure to wrap the valve body with a wet rag Allow the nitrogen to con tinue flowing 3 Carefully remove the plugs from the evaporator liquid and vapor connections at the indoor coil FIGURE 5 Heat Protection A CAUTION Do not install any coil in a furnace which is to be operated during the heating season without attaching the refrigerant lines to the coil The coil is under 30 to 35 psig inert gas pressure which must be released to prevent excessive pressure build up and possible coil damage 4 Braze the liquid line to the evaporator liquid connection Nitrogen should be flowing through the evaporator coil 5 Slide the grommet away from the vapor connection at the indoor coil Braze the vapor line to the evaporator vapor connection After the connection has cooled slide the grommet back into original position 6 Protect the vapor valve with a wet rag and braze the vapor line connection to the outdoor unit The nit
16. ge 11 NOTES Subject to change without notice Printed in U S A 347337 UIM A 0408 Copyright 2008 by Johnson Controls Inc All rights reserved Supersedes 259715 UIM A 0606 Johnson Controls Unitary Products 5005 York Drive Norman OK 7306
17. llow tube metal to metal contact See Figure 3 6 Use PVC piping as a conduit for all underground installations as shown in Figure 4 Buried lines should be kept as short as possible to minimize the build up of liquid refrigerant in the vapor line during long periods of shutdown 7 Pack fiberglass insulation and a sealing material such as perma gum around refrigerant lines where they penetrate a wall to reduce vibration and to retain some flexibility 8 For systems with total line length exceeding 50 ft see APPLICA TION DATA and worksheet General Piping Recommendations and Refrigerant Line Length for vapor and liquid line sizing cali bration of liquid line pressure loss or gain determination of vapor line velocity elevation limitations orifice connections system charging traps etc Johnson Controls Unitary Products 347337 UIM A 0408 Sheet Metal Hanger C Liquid Line N Incorrect Tape Correct Insulated Vapor Line FIGURE 3 Installation of Vapor Line TO INDOOR COIL TO OUTDOOR UNIT Liquid Line Insulated Vapor Line PVC Conduit FIGURE 4 Underground Installation PRECAUTIONS DURING BRAZING OF LINES All outdoor unit and evaporator coil connections are copper to copper and should be brazed with a phosphorous copper alloy material such as Silfos 5 or equivalent DO NOT use soft solder The outdoor units have reusable service valves on both the liquid and vapor connections The
18. o the coil NEC CLASS 1 WIRING TO FURNACE OR AIR HANDLER TERMINAL BLOCK NEC CLASS 2 WIRING TO INDOOR COIL SEAL OPENING S WITH PERMAGUM OR EQUIVALENT ROOF INSTALLATION When installing units on a roof the structure must be capable of sup porting the total weight of the unit including a pad lintels rails etc which should be used to minimize the transmission of sound or vibra tion into the conditioned space LIQUID LINE FILTER DRIER The air conditioning units copper spun filter dryer is located on the liq uid line NOTE Replacements for the liquid line drier must be exactly the same as marked on the original factory drier See Source 1 for O E M replacement driers Failure to do so or using a substitute drier or a granular type may result in damage to the equipment R 22 Apply with Models Filter Drier 029 22156 000 All Models Johnson Controls Unitary Products PIPING CONNECTIONS The outdoor condensing unit must be connected to the indoor evapora tor coil using field supplied refrigerant grade ACR copper tubing that is internally clean and dry Units should be installed only with the tubing sizes for approved system combinations as specified in tabular data sheet The charge given is applicable for total tubing lengths up to 15 feet See Application Data Part Number 036 61920 000 for installing tubing of longer lengths and elevation differences NOTE Using a larger than spe
19. otal line lengths Refer to Application Data covering General Piping Recommendations and Refrigerant Line Length Part Number 036 61920 001 SECTION II SAFETY A This is a safety alert symbol When you see this symbol on labels or in manuals be alert to the potential for personal injury Understand and pay particular attention to the signal words DANGER WARNING or CAUTION DANGER indicates an imminently hazardous situation which if not avoided will result in death or serious injury WARNING indicates a potentially hazardous situation which if not avoided could result in death or serious injury CAUTION indicates a potentially hazardous situation which if not avoided may result in minor or moderate injury It is also used to alert against unsafe practices and hazards involving only property dam Improper installation may create a condition where the operation of the product could cause personal injury or property damage Improper installation adjustment alteration service or mainte nance can cause injury or property damage Refer to this manual for assistance or for additional information consult a qualified con tractor installer or service agency A CAUTION This product must be installed in strict compliance with the enclosed installation instructions and any applicable local state and national codes including but not limited to building electrical and me
20. rogen flow should be exiting the system from the vapor service port connection After this con nection has cooled remove the nitrogen source from the liquid fit ting service port 7 Replace the Schrader core in the liquid and vapor valves 8 Goto SECTION V or SECTION IV for orifice or TXV installation depending on application 9 Leak test all refrigerant piping connections including the service port flare caps to be sure they are leak tight DO NOT OVER TIGHTEN between 40 and 60 inch lbs maximum NOTE Line set and indoor coil can be pressurized to 250 psig with dry nitrogen and leak tested with a bubble type leak detector Then release the nitrogen charge NOTE Do not use the system refrigerant in the outdoor unit to purge or leak test 10 Evacuate the vapor line evaporator and liquid line to 500 microns or less 11 Replace cap on service ports Do not remove the flare caps from the service ports except when necessary for servicing the system A CAUTION Do not connect manifold gauges unless trouble is suspected Approximately 3 4 ounce of refrigerant will be lost each time a stan dard manifold gauge is connected 12 Release the refrigerant charge into the system Open both the liq uid and vapor valves by removing the plunger cap and with an allen wrench back out counter clockwise until valve stem just touches the chamfered retaining wall See Page 3 PRECAU TIONS DURING BRAZING SERVICE V
21. sure PSIG p PSIG a To PSIG PSIG PSIG 170 101 550 re O a 80 0 903 se s te a w s e o w j o S SC se s te e e e l o j a f e j oa YS s iw e o s f o j oa f eo f o f eo y a o 2 o s a e o a w e a a a e j a y 92 C s eee f e o e f e y r tori C e e B e o e f e j or l a f or g e l r wo s o y a g o a7 o y e l o y e y o r _ o f o tae teeta eee toe oa j a a OO a O e f a f o l a f o g a O e o e tae e o o j e y oo e SCO s e tees j e 80ers ee Johnson Controls Unitary Products 5 347337 UIM A 0408 A CAUTION IT IS UNLAWFUL TO KNOWINGLY VENT RELEASE OR DIS CHARGE REFRIGERANT INTO THE OPEN AIR DURING REPAIR SERVICE MAINTENANCE OR THE FINAL DISPOSAL OF THIS UNIT WHEN THE SYSTEM IS FUNCTIONING PROPERLY AND THE OWNER HAS BEEN FULLY INSTRUCTED SECURE THE OWNER S APPROVAL SECTION VIII ELECTRICAL CONNECTIONS GENERAL INFORMATION amp GROUNDING Check the electrical supply to be sure that it meets the values specified on the unit nameplate and wiring label Power wiring control low voltage wiring disconnect switches and over current protection must be supplied by the installer Wire size should be sized per NEC requirements A CAUTION All field wiring must USE COPPER CONDUCTORS ONLY and be in accordance with Local National Fire Safety amp Electrical Codes This unit must be grounded with a separate ground wire in accor dance
22. the access panel of the unit If mix matched TXV indoor coils are used with these models the following subcooling charg ing method must be used Superheat charging charts are not valid with TXV equipped systems SUBCOOLING CHARGING METHOD MIXED MATCH COILS The recommended subcooling is 10 F 1 Set the system running in the cooling mode by setting the thermo stat at least 6 F below the room temperature 2 Operate the system for a minimum of 15 20 minutes 3 Refer to the tabular data sheet for the recommended airflow and verify this indoor airflow it should be about 400 SCFM per ton 4 Measure the liquid refrigerant pressure P and temperature T at the service valve 5 Calculate the saturated liquid temperature ST from Table 2 6 Subcooling temperature TC Saturated Temperature ST Liquid Temp T Example The pressure P and temperature T measured at the liq uid service port is 196 psig and 90 F respectively From Table 2 the saturated temperature for 196 psig is 100 F The subcooling temperature TC 100 90 10 F Add charge if the calculated subcooling temperature TC in Step 6 is lower than the recommended level Remove and recover the refrigerant if the subcooling TC is higher than the recommended level See Table 2 Check flare caps on service ports to be sure they are leak tight DO NOT OVERTIGHTEN between 40 and 60 inch Ibs maximum Pressure PSIG 140 Temp F Temp F Pressure Tein Pres
23. turn to seal Do not over tighten fittings 7 Leak test system 8 Replace black plastic cap on equalizer fitting 9 Slide indoor coil back into cabinet LIQUID LINE SWIVEL COUPLING a This fitting is a right hand thread turn counter clockwise to remove Toss ORIFICE aS DISTRIBUTOR FIGURE 6 Orifice Installation Johnson Controls Unitary Products SECTION V INSTALLATIONS REQUIRING AN ADD ON TXV KIT For installations requiring a TXV kit refer to the Installation Instructions accompanying the TXV kit Schrader valve core MUST NOT be installed with TXV installation Poor system performance or system failure could result SECTION VI EVACUATION It will be necessary to evacuate the system to 500 microns or less If a leak is suspected leak test with dry nitrogen to locate the leak Repair the leak and test again To verify that the system has no leaks simply close the valve to the vac uum pump suction to isolate the pump and hold the system under vac uum Watch the micron gauge for a few minutes If the micron gauge indicates a steady and continuous rise it s an indication of a leak If the gauge shows a rise then levels off after a few minutes and remains fairly constant it s an indication that the system is leak free but still con tains moisture and may require further evacuation if the reading is above 500 microns SECTION VII SYSTEM CHARGE The factory charge in the out
24. ure setting When applicable instruct the owner that the compressor is equipped with a crankcase heater to prevent the migration of refrigerant to the compressor during the OFF cycle The heater is energized only when the unit is not running If the main switch is disconnected for long peri ods do not attempt to start the unit until 8 hours after the switch has been connected This will allow sufficient time for all liquid refrigerant to be driven out of the compressor The installer should also instruct the owner on proper operation and maintenance of all other system components Johnson Controls Unitary Products 347337 UIM A 0408 Maintenance 1 Dirt should not be allowed to accumulate on the outdoor coils or other parts in the air circuit Clean as often as necessary to keep the unit clean Use a brush vacuum cleaner attachment or other suitable means 2 The outdoor fan motor is permanently lubricated and does not require periodic oiling 3 Ifthe coil needs to be cleaned it should be washed with Calgon Coilclean mix one part Coilclean to seven parts water Allow solution to remain on coil for 30 minutes before rinsing with clean water Solution should not be permitted to come in contact with painted surfaces 4 Refer to the furnace or air handler instructions for filter and blower motor maintenance 5 The indoor coil drain pan should be inspected and cleaned regu larly to prevent odors and assure proper draina
25. with the above codes The complete connection diagram and schematic wiring label is located on the inside surface of the unit service access panel FIELD CONNECTIONS POWER WIRING 1 Install the proper size weatherproof disconnect switch outdoors and within sight of the unit 2 Remove the screws at the top and sides of the corner cover Slide corner cover down and remove from unit 3 Run power wiring from the disconnect switch to the unit 4 Route wires from disconnect through power wiring opening pro vided and into the unit control box as shown in Figure 6 5 Install the proper size time delay fuses or circuit breaker and make the power supply connections CONTACTOR GROUND LUG FINGERED REVERSIBLE HIGH BUSHING VOLTAGE CONDUIT PLATE RUN EAN CAPACITOR FIGURE 7 Outdoor Unit Control Box FIELD CONNECTIONS CONTROL WIRING 1 Route low voltage wiring into bottom of control box as shown in Figure 6 Make low voltage wiring connections inside the low volt age box per Figures 7 9 2 The complete connection diagram and schematic wiring label is located on the inside surface of the unit service access panel 3 Replace the corner cover removed in Step 2 4 All field wiring to be in accordance with national electrical codes NEC and or local city codes NOTE A Start Assist Kit is available and recommended for long line set applications or in areas of known low voltage problems 5
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