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Friedrich VERT-I-PAK R410A User's Manual

Contents

1. 9NISH3A3H INNOW HOLOW OL T jil II TVNIWd T YHA OSS ddWOO S Laysvo A0 OL MIMS L Hd dWAd LV3H INVHOVIO DNIHIM FAN TYNINAL YAHSVM 46 Accessories WALL PLENUM Two part sleeve that telescopes in and out from 5 1 2 to 8 depth The wall plenum sits inside the VPAWP1 8 exterior wall penetration DIMENSIONS 30 s high x 24 s wide CUTOUT DIMENSIONS 30 7 high x 24 s wide VPAWP1 14 Same as VPAWP1 8 but telescopes 8 to 14 as required ARCHITECTURAL LOUVER Extruded aluminum louver that attaches to the outdoor section of the wall plenum DIMENSIONS 311 6 high x 25 9 1 wide Same as VPAL2 but can be ordered in a special color to match the exterior wall DIGITAL REMOTE WALL THERMOSTAT Single stage thermostat used on VERT I PAK units Hard wired with single speed fan Direct replacement for RT2 DIGITAL REMOTE WALL THERMOSTAT Single stage cool single stage heat thermostat Features high low fan speed switch Hi Low temperature limiting Thermostat is hard wired and is unit powered Features backlight display and multiple configuration ACCESS PANEL RETURN AIR GRILLE Serves as an access panel to chassis and interior return air grille A field supplied 25 x 20 filter is mounted inside the hinged access door Kit contains hinge bracket for mounting the door with the return air openings high or low on the door for optimal so
2. AV1 d Av tNvall NV4 CN O ce HOLIMS IJUNSSIHA MA OS MM FEB NM ST YALVAH Novia E Eu OSN S HIV 1N I WV AV IdSIG 3O9IAH3S HOLIMS NOI1 1 S ADVLIOA HOLOW OL HOLOVINOD HOSSIYdWOOJ 2 Movia YOLIIVdVI 5 YOLON NMOHA OX SI NAOSa YOLOW NW ON 3IIHM NE vc VIA MAO S MAYE MASZ 1009 WVSHO9VIG DNIHIM 2101 029 3LIHM 1IINSVDA OO IVNIIN3 L HAHSVM 43 COOL WITH ELECTRIC HEAT ELECTRICAL amp THERMOSTAT WIRING DIAGRAM VEA 24 with 7 5 KW and 10 KW ELECTRIC HEAT Buul ple OSN S 100 OOQNI 1 DISI TV1S ue4 speeds omL 9LY OSN S 1109 OOqInO 2 ue MO 19 g sn spow Buneay ul pezibueu3 ulsJeAed la ol DuneeH 104 M Builo09 10 ie A W014 JAod OVArz SSINHYH ONIYIM LYLSL dQN 5 1 0 0966 DIVA GN49141 uey 20 jre2 H9 q Sn LON O SNOLLO3NNOO LVLSOWNYAHL HOLIMS IHNSSIUA m feroj fho gt f u AOE OL ADVLIOA LAS HOLIMS NOILDA TAS ADVLIOA OSN S HIV 1N I AV LNNOW HOLOW OL AW1dSIC 39IAH3S ania O MM 0 0L 10 MA SZ dALVAH IOH LNOO OINOd19 NOV 20 Z1
3. NI RiP elelr Ni RiP elelr Ne PP elelr Ni RiP elelr NP PP elelr H italtaltazltaltaltaltaltalta NI Ri RR RP Ry RP Ri RIE NI Ri RP RR ee elelr elelr NP ESS ES elelr 61764588 OVERLOAD FSTB 128 155 241 Pe P P P PINE PP RIN RIP elelr 61764585 OVERLOAD MRA12030 12008 61764562 OVERLOAD MRA12177 12008 2011 VPAK 24K BTU h Models 54 2011 VPAK 24K BTU h Models ay MAI B IE E 55 2011 24K BTU h Models 56 57 2011 VPAK 24K BTU h Models 24K BTU h Models lt 2 2011 VPAK Parts List Part Number Part Description VEA24K10RTL B VEA24K25RTL B VEA24K34RTL B VEA24K50RTL B VEA24K75RTL B VHA24K10RTL B VHA24K25RTL B VHA24K34RTL B VHA24K50RTL B VHA24K75RTL B 80077118 COMPRESSOR KIT uy uy LA b b 80103450 COIL EVAPORATOR uy f f jak b 80101261 COIL CONDENSER xjiwjwnIr Reference Number 80101260 COIL CONDENSER 61834800 STRA
4. e w 80041970 COIL CONDENSER 80048050 COIL CONDENSER 61834800 STRAINER 312 COIL 61834801 STRAINER 375 COIL 61804901 SHROUD MED W FD RESTRAINT 80017090 HEATER VPAK A NXT 2 5KW 230V 80017091 HEATER VPAK A NXT 3 4KW 230V 80017092 HEATER VPAK A NXT 5 0KW 230V 80007600 NONFUSED DISCONNECT 61080521 CAPCTR 25 10 MF 450V 61080558 CAPCTR 30 10 MF 370V 61080554 CAPCTR 40 10 MF 370V 62601008 E CONTROL MAIN BOARD Electric Heat 62601009 E CONTROL MAIN BOARD Heat Pump 62600203 Sensor ID R A Temperature Return Air 62600205 Sensor ID Coil Temperature Evaporator 62600206 Sensor OD Coil Temperature Condensor 62600600 DISPLAY SERVICE VPAC KUHL 80050601 BRACKET ELECT CTRL KUHL 60610601 BLOWER WHEEL 60610607 BLOWER WHEEL 60610605 BLOWER WHEEL 60542004 FAN PLASTIC 14 5 TA1004 80049601 NSUL ASY LFT FRONT PNL 80013807 NSUL ASY RIGHT SIDE PANEL 80001800 COLLAR 24 GA 80013502 NSUL ASY TOP COVER 61656200 CHANNEL EXHAUST DOOR 61656201 SLIDE EXHAUST DOOR 80013805 NSUL ASY LEFT SIDE PANEL 61814800 CONNECTOR FRESH AIR S M 80029207 SOLATOR PAD Ni Ri RRP RP Ry RI Ri RIE pl ln NP PP
5. CAUTION CUT SEVER HAZARD Be careful with the sharp edges and corners Wear protective clothing and gloves etc Failure to do so could result in minor to moderate injury Servicing Chassis Quick Changeouts The chassis is designed for quick disconnect and change out For minor electrical service the control box cover lifts straight up after the screws amp disconnect head are removed For major electrical refrigeration and fan service the chassis may be removed from utility closet To Remove the Chassis from the Closet A Disconnect the power coming into the unit from the main breaker panel or the closet mounted disconnect Switch the wall Thermostat off Disconnect the electrical connection Disconnect the duct work Slide the chassis out of the wall plenum Lift the chassis out of the utility closet Warranty All service work must be done by a qualified servicer See Product Warranty and consult your dealer or contractor for details Pull the Power Disconnect located in the front of the chassis Disconnect condensate drain on 9 18 000 BTU models 13 14 9 18K BTU UNITS COMPONENTS IDENTIFICATION Blower Wheel and Heater in here 10 Duct Collar Nameplate Air Discharge Diagnostic Touch Pad Compressor Blower Fan Motor Capacitor Kescht Front Side a UN 7 Dei K 80033900 Right Side Left and Back Sides
6. FP P P 62601008 E CONTROL MAIN BOARD Electric Heat ejejelejelejelejejeleje K ltaltaltaltaltaltaltaltaltaltaltz 62601009 E CONTROL MAIN BOARD Heat Pump 62600203 Sensor ID R A Temperature Return Air 62600205 Sensor ID Coil Temperature Evaporator 62600206 Sensor OD Coil Temperature Condensor 62600600 DISPLAY SERVICE VPAC KUHL 80116901 BRACKET ELECT CNTRL KUHL 80118600 CONTACTOR 240V 80106400 INSUL ASY RT PANEL 80106600 INSUL ASY REAR PANEL 61656200 CHANNEL EXHAUST DOOR 61656201 SLIDE EXHAUST DOOR 60179904 CONDENSATE DRAIN VALVE 80115225 BASEPAN ASY PAINT amp CAULK 80103600 BLOWER BRACKET 61814801 CONNECTOR FRESH AIR LRG 8
7. 9400 9000 11500 11200 17000 16500 23000 22700 1173 1888 2421 9 0 9 0 0 70 230 208 230 208 230208 230 208 263 198 253 198 253 198 253 198 J 4244 5254 8185 10 0104 18 30 42 35 45 78 95 1 m 14 14 12 12 12 vm 085 0 0 3x23x3 23x23x47 220 65 9 5 9 5 0 70 6 1 1 4 2 9200 9000 939 9 8 9 8 0 74 8500 230 208 253 198 4 1 4 3 e 1 4 N 2 1 1 1500 11200 17000 16800 mee 1868 9797 9191 072 070 10800 16000 30 so 3 830 1055 1563 49 75 9 230 208 230 208 253 198 253 198 5 3 5 5 8 2 8 5 26 5 A 42 78 9 _ 14 m u 2 1 2 23000 22800 2527 9 1 9 1 0 70 20000 1953 w A o 230 208 253 198 10 6 10 8 34 8 1 94 0 85 TECHNICAL SERVICE DATA Cooling Performance Data ELECTRICAL INDOOR COIL OPERATING Refrigerant PRESSURES Charge Suction R 410A Oz 151 TEMPERATURE OUTDOOR COIL Discharge Line Suction Line RATINGS SERVICE DATA TEMPERATURE Temperature Temperature Super Heat Sub Cooling Cooling 141 VEA24K RTL VHAO9K RTL VHA12K RTL 133 140 Test Conditions 80 F Room Air Temperature with 50 Relative Humidity and 95 F Outdoor Air Temperature with 40 Relative Humidity Denotes Heat
8. Cool and the Temp ot w operates below the present entire system Room Temp appears dead SCENARIO 2 SCENARIO 1 Compressor and Fan Line voltade present jumper BCEE Compressor runs but F but at the Transformer Blower Fan doesn t Compressor doesnt Motor Bure HOW Primary okay replace board Yes Yes Problems indicated with Control Transformer replace board E 24 Volts at See Refrigerant Circuit R Terminal on board diagnosis if unit still is not cooling properly 24 Volts present at Problems indicated Y terminals on with t stat or t stat and board control wiring Fix 3 minute delay done Defective t stat at control board Wait until done defective control wiring or transformer 24V at t stat and control wiring 208 230 volts present at compressor s Replace board relay on board Are wiring connections Repair or replace and capacitor good what is needed Compressor and fan motor should now No operate Is Line Voltage present Ee Yes at Motor Leads No o Dod Supply Circuit Is Locked Rotor problems loose I ini See Refrigerant Connections or bad Voltage a minimum of Circuit Diagnosis if Relavs Board No 197 Volts unit still is not cooling Yes mm properly E T Replace Capacitor o Replace Capacitor Are Capacitor and if and or Start Assist so equipped Start Yes Device Assist good Possible motor Yes problem indicated Motor should run No Check motor thor
9. VPAK 24K BTU UNITS COMPONENTS IDENTIFICATION Electric Control Panel 10 Duct Collar Air Discharge Blower Wheel Return 0 Air Filter D d de J Electronic Control Board Fresh Air Door Lever Front Side Blower Condenser MURS Fan Motor Condenser bu Capacitor Air Discharge L Condenser Shroud x s i lt LA c c Right Side condenser Condenser Fan Blade Condensate Drain Hose Condenser Coil Thermistor 16 Error Codes Alarm Status Unit Control Panel The display shown below has four digits The left two digits indicate the error code 1 to 24 The On Off icons above these two digits indicate the currents state of the error code The right two digits show the history count up to 99 of the associated error code The display contains a maintenance icon wrench that will illuminate to indicate when the unit needs service This wrench indicates an error code amp is on active To find out which one check all error codes On Off Error History Error State Code Counter Maintenance Required ba Coco vr E Indicator Check Error Codes 1 Press the Enter key to activate the display 2 Each press of the scroll key display the next error code Enter Button Clear History Counters 1 Press amp hold the Enter key and the Scroll Key for 6 seconds Front Panel Button Stuck For More Than 20 Seconds Cont
10. L be m ANC T3 AV T3 NVA L NVA AVIS AV T38 AV AY ll NVA O om copies OL OZS 3LIHM WW WW NMOHg YyOLIOVdVO HOLOW NMOHS SOLON NV4 sa por OCR mum 31IHM NY VIA MAO OL MAS 1009 WVHOVIG DNIHIM HOLIOVINOO HOSSIHANOD HOSSHHdWOO Movia TVNINHIL 1 SVS OO TVNIW 1 INN H3HSVM 44 3 4 KW or 5KW ELECTRIC HEAT 5 KW HEAT PUMP WITH ELECTRIC HEAT ith 2 ELECTRICAL amp THERMOSTAT WIRING DIAGRAM VHA 24 w Duuu ple pepi oJd DISH 1V1S ue speeds OML 91L4 IOHLNOO OINOd19 OSN S 1109 OOQNI OSN S 1109 HOOQLNO NOV 20 21 ue 104 lO HO ue 10 2 g esn apow ul pezI5Jeu 5ulsJeAed g ol DuneeH 104 BuooO Joj tea TA HUN OvAvz SSINHVH LVISL GN4931 070966 ON T HV QN3931 2101 OZS LON AV T3 AVT38 AVIS Av13H NV NY4 L NVA RA AE NH SNOILO3NNOO LVLSOWY3HL HOLIMS dr1SS dd MA OS MAGTER MA G S YALVAH EVA SS HOLOVINOD HOSSIHAWOD OL 39VLIOA LAS HOLIMS NOI19 1 S J9VLIOA
11. actually defective before replacing A WARNING HIGH PRESSURE HAZARD Sealed Refrigeration System contains refrigerant and oil under high pressure Proper safety procedures must be followed and proper protective clothing must be worn when working with refrigerants Failure to follow these procedures could result in serious injury or death 2 Recover all refrigerant from the system though the process tubes PROPER HANDLING OF RECOVERED REFRIGERANT ACCORDING TO EPA REGULATIONS IS REQUIRED Do not use gauge manifold for this purpose if there has been a burnout You will contaminate your manifold and hoses Use a Schrader valve adapter and copper tubing for burnout failures A WARNING HIGH TEMPERATURES Extreme care proper judgment and all safety procedures must be followed when testing troubleshooting handling or working around unit while in operation with high temperature us components Wear protective safety aids gu such as gloves clothing etc Failure to do so could result in serious burn injury NOTICE FIRE HAZARD The use of a torch requires extreme care and proper judgment Follow all safety recommended precautions and protect surrounding areas with fire proof materials Have a fire extinguisher readily available Failure to follow this notice could result in moderate to serious property damage 3 After all refrigerant has been recovered disconnect suction and discharge lines from the com
12. refrigeration system problems will be more difficult and time consuming if not in some cases entirely impossible The refrigeration system uses four basic principles laws in its operation they are as follows 1 Heat always flows from a warmer body to a cooler body 2 Heat must be added to or removed from a substance before a change in state can occur 3 Flow is always from a higher pressure area to a lower pressure area 4 The temperature at which a liquid or gas changes state is dependent upon the pressure The refrigeration cycle begins at the compressor Starting the compressor creates a low pressure in the suction line which draws refrigerant gas vapor into the compressor The compressor then compresses this refrigerant raising its pressure and its heat intensity temperature The refrigerant leaves the compressor through the discharge Line as a hot High pressure gas vapor The refrigerant enters the condenser coil where it gives up some of its heat The condenser fan moving air across the coil s finned surface facilitates the transfer of heat from the refrigerant to the relatively cooler outdoor air When a sufficient quantity of heat has been removed from the refrigerant gas vapor the refrigerant will condense i e change to a liquid Once the refrigerant has been condensed changed to a liquid it is cooled even further by the air that continues to flow across the condenser coil The VPAK
13. 10 6 4 10 10 10 American Wire Gauge AWG American Wire Gauge Single circuit from main box Based on copper wire single insulated conductor at 60 C VEA24K 5000 4090 230 208 17000 13900 VHA24K 5000 4090 230 208 17000 13900 3400 2780 7500 6135 10000 8180 2500 2050 3400 2780 7500 6135 10000 8180 11600 9500 25598 20939 34130 27918 8500 7000 11600 9500 25598 20939 34130 27918 Chassis Specifications Model 2011 VEAO9K VEA12K VEA18K VEA24K COOLING DATA VHA09K VHA12K VHA18K VHA24K Q E 2 UJ G F POWER W ER 9 8 9 8 9 8 9 8 HEAT PUMP DATA m zZ 2 0 rm m JE gt N A N A N A N A COP Q 47F TE BE 3 5 2135 ZIZ e OJO G OLV D S i ms gt ELECTRICAL DATA VOLTAGE 1 PHASE 60 Hz VOLT RANGE AMPS L R AMPS F L INDOOR MOTOR HP INDOOR MOTOR A N A N A 1O Q SE 2 gio E z O D lt 6 A 2 Ojo m D gt 2 em 2 5 gt AIRFLOW DATA VENT ESP PHYSICAL 300 3 350 3 23x23x32 23x23x32 14 124 125 135 2 2 0 Rjijmjz Slsl lm gt 0 2 o z m o 2 z rlz D OJTI ems ol 1 1 SAI e IC AE Normal Value Wet Coil 1 ESP Az a 450 ps 2 2
14. 7109 GION31OS SATA 9NISH3A3H YOLIIVdVI HOLOW NAOd HOLOW OSN S HIV gt iia 1N I WV 1IHA 1IHA HOLOW OL vc VHA MAO S MIE MASZ o Hd did LV3H INVSOVIG SNIHIM SVO AV IdSIQ OIAd S OO TVNIW TL YAHSVM 45 HEAT PUMP WITH ELECTRIC HEAT ELECTRICAL amp THERMOSTAT WIRING DIAGRAM 5 KW and 10KW ELECTRIC HEAT th 7 VHA 24 w BULJIM ple OSN S 1109 HOOQNI 1OgLNOO OINOJLO OSN S 1109 HOOQLNO PI9H 1V1S ue4 speeds OML 9LM NOWWO2L 2 uey UDIH 20 IIBO HO q Sr LON ue JO eoho Buneay DoZIJgu DuneeH 104 tea M op eof A HUN wold Jemod OvAvz SS3NHVH LYLSL AN3941 QN3931 OL ADVLIOA LAS HOLIMS NOI1 1 S ADVLIOA LNNOW YOLOW OL AV 1dSIQ 39IAH3S 0 ania HOLIMS adnss3add j g MA OL HO MM SZ YALVAH N3349 NOV 20 21 AN 14 2101 OZS 3LIHM AYTA Av 138 AVI AV T3 AVIS AH L 1V3H f Ga mia aa CET Pi SEN Pen s WW AE JONVHO f Movig WOLIlOvdvo SOIOW NMOU8 SO1OW NV4 sano HOLOVINOO HOSSIHAWOD EA 1109
15. Indoor Coil Restriction Outdoor Coil TROUBLESHOOTING CHART HEATING HEAT PUMP REFRIGERANT SYSTEM DIAGNOSIS HEATING PROBLEM PROBLEM PROBLEM PROBLEM LOW SUCTION PRESSURE HIGH SUCTION PRESSURE LOW HEAD PRESSURE HIGH HEAD PRESSURE Low Air Flow Across Outdoor Ambient Too High Refrigerant System Outdoor Ambient Too High Outdoor Coil for Operation in Heating Restriction For Operation In Heating Refrigerant System Reversing Valve not Reversing Valve not Low Air Flow Across Restriction Fully Seated Fully Seated Indoor Coil Undercharged Overcharged Undercharged Overcharged Defective Compressor Defective Compressor air 39 40 REMOTE WALL THERMOSTAT WIRING DIAGRAMS LEGEND FOR T STAT WIRING HARNESS R 24 VAC Power From Unit GL Gamertewfin oe Reversing Valve Configurable o Cool mode active reversing valve B Heat mode active reversing valve for VPAK heat pump unit Coil for Cooling Call for Heat RT6 Two Speeds Fan T Stat Field Provided Field Wiring COOL WITH ELECTRIC HEAT Electronic Control Board 24 VAC Connections Rememe HEAT PUMP WITH ELECTRIC HEAT Electronic Control Board 24 VAC Connections DECATA re Temes 5 KW 3 4 KW or 5KW ELECTRIC HEAT COOL WITH ELECTRIC HEAT ELECTRICAL amp THERMOSTAT WIRING DIAGRAM VEA 09 12 18 with 2 Duuu pls HOSN3S 1109 HOOQNI pepi oud 4 1 15 1 ue 4
16. gurgling sound indicates a low refrigerant charge Intermittent frosting and thawing of the evaporator is another indication of a low charge however frosting and thawing can also be caused by insufficient air over the evaporator Checks for an undercharged system can be made at the compressor If the compressor seems quieter than normal it is an indication of a low refrigerant charge A check of the amperage drawn by the compressor motor should show a lower reading Check the Unit Specification 25 26 After the unit has 10 to 15 minutes check the gauge pressures Gaugesconnectedto system with an undercharge will have low head pressures and substantially low suction pressures Reversing Compressor P Valve Accumulator n Cj Head Pressure Indoor Coil uen rover Lower Compressor Running Quieter than Normal Amps Lower Undercharged System Overcharged Refrigerant Systems Compressor amps will be near normal or higher Noncondensables can also cause these symptoms To confirm remove some ofthe charge if conditions improve system may be overcharged If conditions don t improve Noncondensables are indicated Wheneveranoverchargedsystemisindicated alwaysmake sure that the problem is not caused by air flow problems Restricted Refrigerant System Troubleshooting a restricted refrigerant system can be difficult The following procedures are the more common problems and so
17. wiring and or tampering with the unit s internal wiring can void the equipment warranty Failure to follow these instructions can result in personal injury and damage to product or other property Connect the thermostat using Figure 1 and Table 1 as a guide Procedure Ensure there is no jumper wire at FP and F2 1 Disconnect power to the unit 2 Unscrew and remove the electrical control box s cover 3 Locate the Interface Connector 24 VAC terminal strip See figure 1 at left 4 Make the wire connections according to the configuration needed for your unit see above or page 40 for wiring diagrams Use 18 gauge wire size 5 Once each wire is matched and connected the unit is now ready to be controlled by the thermostat 6 Reattach the electrical control box s cover Remote Wall Thermostat Location The thermostat should not be mounted where it may be affected by drafts discharge air from registers hot or cold or heat radiated from the sun appliances windows etc The thermostat should be located about 5 Ft above the floor in an area of average temperature with good air circulation Mercury bulb type thermostats MUST be level to control temperature accurately to the desired set point Electronic digital type thermostats should be level for aesthetics Thermostat Location THERMOSTAT SHIELD Note An improperly operating or poorly located remote wall thermostat can be the source of perce
18. 0106500 INSUL ASY LT PANEL RIP NIP RP RIP RR RI RR PIR IR eR RPI PINT P RIP P kaltalb ltaltaltraitaltaltaltaltaltaltaltaitaltz hp PIRI NITE PIP PIP BH 61828203 LIQUID LINE DRIER elejelnj eje ejlelieje ejeje ejeie PIPITP PIP ejeje Fo FFP K ltaltaibilkaltaitaltaitaitaltaitaitazltaitalta K ltaltaibiltaltaitaltaitaitaltaitaitaltaitalta 61828204 LIQUID LINE DRIER HEATPUMP 58 CUSTOMER SATISFACTION and QUALITY ASSURANCE Friedrich is conscientious manufacturer concerned about customer satisfaction product quality and controlling warranty costs As an Authorized Service Provider you play a vital role in these areas By adhering to the policies and procedures you provide us with vital information on each warranty repair you complete This information is used to identify product failure trends initiate corrective action and improve product quality thereby further reducing warranty expenses while increasing customer satisfaction levels FRIEDRICH AUTHORIZED PARTS DEPOTS AAA Refrigeration Service The Gabbert Company Reeve Air Conditioning Inc 1322 24th Street Suite B 6868 Ardmore 2501 South Park Road Kenner Louisiana 70062 Houston T
19. 2 11 946 2 26 2 26 72 11 128 11 380 11 633 2 22 2 22 73 10 846 11 088 11 329 2 18 2 18 74 10 574 10 804 11 034 2 13 2 13 75 10 308 10 528 10 748 2 09 2 09 76 10 051 10 260 10 469 2 04 2 04 7 9 800 10 000 10 200 2 00 2 00 78 9 550 9 748 9 945 2 03 2 03 79 9 306 9 503 9 699 2 07 2 07 80 9 070 9 265 9 459 2 10 2 10 81 8 841 9 033 9 226 2 13 2 13 82 8 618 8 809 9 000 2 17 2 17 83 8 402 8 591 8 780 2 20 2 20 84 8 192 8 379 8 566 2 23 2 23 85 7 987 8 172 8 358 2 27 2 27 86 7 789 7 972 8 155 2 30 2 30 87 7 596 7 778 7 959 2 33 2 33 88 7 409 7 589 7 768 2 37 2 37 89 7 227 7 405 7 583 2 40 2 40 90 7 050 7 226 7 402 2 43 2 43 91 6 878 7 052 7 226 2 47 2 47 92 6 711 6 883 7 055 2 50 2 50 93 6 548 6 718 6 889 2 53 2 53 94 6 390 6 558 6 727 2 57 2 57 95 6 237 6 403 6 569 2 60 2 60 96 6 087 6 252 6 417 2 63 2 63 97 5 942 6 105 6 268 2 67 2 67 98 5 800 5 961 6 122 2 70 2 70 99 5 663 5 822 5 981 2 73 2 73 100 5 529 5 686 5 844 2 77 2 77 105 4 912 5 060 5 208 2 93 2 93 110 4 371 4 511 4 651 3 10 3 10 115 3 898 4 030 4 161 3 27 3 27 120 3 482 3 606 3 730 3 43 3 43 ELECTRICAL TROUBLESHOOTING CHART COOLING 9K BTU 12K BTU amp 18K BTU NO COOLING OPERATION Before continuing check for Error Insure that Fuses Codes see are good and or that electronics control Circuit Breakers are on and voltage is 208 230 diagnostics on page 16 Set thermostat to Nothi
20. 2011 2012 Service Parts Manual g FRIEDRICH Single Package Vertical Air Conditioning Svstem 9 18K VERT I I AK Series Electronic Controls L B Suffix R410A Models V E H A09K25L V E H A12K25L V E H A18K25L V E H A24K25L 3 V E H A24K75L VPK ServMan L 4 11 V E H A09K34L V E H A12K34L V E H JA18K34L 3 V E H A24K34L 3 V E H A24K10L 3 V E H A09K50L V E H A12K50L V E H A18K50L V E H A24K50L Last Character May Vary Table of Contents Important Safety Information 2 4 Introduction Ai ec PIED 4 Vert l Pak Model Number Identification Guide 5 Serial Number Identification Guide 5 Electrical Requirements nanna nr ora 6 Chassis Specifications rer rr rna nan 7 Cooling Performance Data 8 Extended Cooling Performance 8 Electronic Control Features 9 Electronic Control Sequence of Operation 10 11 Low Voltage Interface Connections 12 SO EET 13 9 18 BTU Units Components Identification 14 VPAK 9 18 BTU Units Components Identification 15 Error Codes and Alarm Status 16 Components Testing NA 17 Electronic Cont
21. INER 312 COIL 61834801 STRAINER 375 COIL 03760548 TUBE CAP Cooling 03760507 TUBE CAP Heating 25076005 VALVE CHECK 60542007 FAN PLASTIC 16 LRG VPAC 91400400 STUD COMPR MTG 01150934 GROMMET COMP 64041 80101400 LOWER RIGHT POST Nn nln AJA 80106201 INNER WALL PF wl web RiP Fw wl elF Fw web BIN RE 80102294 HEATER VPAK A24 NXT 10 0KW 230V k ltaltalula ltaltaltalt ltaltz 80102290 HEATER VPAK A24 NXT 2 5KW 230V 80102291 HEATER VPAK A24 NXT 3 4KW 230V 80102292 HEATER VPAK A24 NXT 5 0KW 230V 80102293 HEATER VPAK A24 NXT 7 5KW 230V 80103200 BLOWER HOUSING 80106970 MTR 1 4 4 6P CW 1PSC 15 0 BLO WEL Evap 61080573 CAPCTR 15 5 MF 440V 61080580 CAPCTR 50 5 370VAC 20709185 CAPACITOR BRACKET 80007600 NONFUSED DISCONNECT 80001800 COLLAR 24 GA PF P FF 25022032 VALVE REV 4 WAY DUNAN 25014400 MOTOR MOUNT 80102170 MTR 1 4 4 6P CCW 1PSC 5 0 BLO WEL 80114100 91 SHROUD ASY VPAK 24 80101010 SHROUD RING VPAK24 80101300 LOWER LEFT POST 80106701 INSULATED TOP ASSY 80113200 TOP COVER INSUL ASYU 80101500 UPPER LEFT POST 80101600 UPPER RIGHT POST 80116601 CONTROL BOX COVER 80118400 CONTROL BOX
22. ING THE REVERSING VALVE NOTE You must have normal operating pressures before the reversing valve can shift AA WARNING HIGH PRESSURE HAZARD Sealed Refrigeration System contains refrigerant and oil under high pressure Proper safety procedures must be followed and proper protective clothing must be worn when working with refrigerants Failure to follow these procedures could result in serious injury or death Check the operation of the valve by starting the system and switching the operation from Cooling to Heating and then back to Cooling Do not hammer on valve Occasionally the reversing valve may stick in the heating or cooling position or in the mid position When sluggish or stuck in mid position part of the discharge gas from the compressor is directed back to the suction side resulting in excessively high suction pressure Should the valve fail to shift from coooling to heating block the air flow through the outdoor coil and allow the discharge pressure to build in the system Then switch the system from heating to cooling If the valve is stuck in the heating position block the air flow through the indoor coil and allow discharge pressure to build in the system Then switch the system from heating to cooling Should the valve fail to shift in either position after increasing the discharge pressure replace the valve Dented or damaged valve body or capillary tubes can prevent the main s
23. Low Voltage Interface Connection Ensure it is set at 230VAC Sample board 1 Test for power at L1 and L2 for 208 230 VAC Ensure the transformer voltage selector switch is set for 230 VAC 2 Test the 10 amp 250 VAC fuse for continuity FOR THE FOLLOWING TESTS ENSURE THE UNIT IS IN THE APPROPRIATE SETTINGS FOR THE TEST BEING PERFORMED ENSURE THERE ARE NO ERROR CODES ACTIVE 3 Testing the compressor relay and heat relays Test for power in and power out If there is power in and no power out replace the electronic control board 208 230 to L2 4 Testing the fan and reversing valve relays Test for power at the reversing valve and fan relays 1 or 3 208 230 to L2 5 Testing the transformer Test the low voltage terminal strip at R and C for 24 VAC F2 and F1 for 24 VAC D2 and D1 for 24 VAC Test the service module connector for 5 VDC see prior page Test the connectors for the thermistors for up to 5 VDC If there is no voltage at any of the above replace electronic control board 6 Testing the thermistors Disconnect the thermistor and test for resistance value see page 35 7 Testing the high pressure switch VPAK 24K only Test for 24 VAC at board if there is no voltage replace the electronic control Test the pressure switch for continuity if none replace it switch is normally closed COMPONENTS TESTING Continued BLOWER FAN MOTOR A single phase permanent split capacitor motor is used to drive the evaporat
24. Phase Resistance Test 31 Compressor Replacement 32 33 Routine Maintenance A 33 Unit Performance Test Data Sheet 34 Thermistor Resistance Values 35 Troubleshooting Charts 36 39 Remote Wall Thermostat Wiring Diagrams 40 Electrical and Thermostat Wiring Diagrams 41 46 Fa tet ar ELSE ER 47 i eco toti RR 48 VPAKD 18K Parts p dace ited 50 53 VPAK 24K Parts LL 54 58 Technical Support Contact Info 59 IMPORTANT SAFETY INFORMATION The information contained in this manual is intended for use by a qualified service technician who is familiar with the safety procedures required for installation and repair and who is equipped with the proper tools and test instruments required to service this product Installation or repairs made by unqualified persons can result in subjecting the unqualified person making such repairs as well as the persons being served by the equipment to hazards resulting in injury or electrical shock which can be serious or even fatal Safety warnings have been placed throughout this manual to alert you to potential hazards that may be encountered If you install or perform service on equipment it is your responsibility to read and obey these warnings to guard against any bodily i
25. RE HAZARD The use of a torch requires extreme care and proper judgment Follow all safety recommended precautions and protect surrounding areas with fire proof materials Have fire extinguisher readily available Failure to follow this notice could result in moderate to serious property damage 1 Install Process Tubes Recover refrigerant from sealed system PROPER HANDLING OF RECOVERED REFRIGERANT ACCORDING TO EPA REGULATIONS IS REQUIRED 2 Remove solenoid coil from reversing valve If coil is to be reused protect from heat while changing valve 3 Unbraze all lines from reversing valve 4 Clean all excess braze from all tubing so that they will slip into fittings on new valve 5 Remove solenoid coil from new valve 29 30 6 Protectnew valve body from heat while brazing with plastic heat sink Thermo Trap or wrap valve body with wet rag T Fit all lines into new valve and braze lines into new valve A WARNING EXPLOSION HAZARD The use of nitrogen requires a pressure regulator Follow all safety procedures and wear protective safety clothing etc Failure to follow proper safety procedures could result in serious injury or death 8 Pressurize sealed system with a combination of R 410A and nitrogen and check for leaks using a suitable leak detector Recover refrigerant per EPA guidelines 9 Once the sealed system is leak free install solenoid coil on new valve and charge the sealed system b
26. RT I PAK units that the measured External Static Pressure increases as the resistance is added externally to the cabinet Example duct work filters grilles Indoor Airflow Data The Vert Pak A series units must be installed with a free return air configuration The table below lists the indoor airflow at corresponding static pressures All units are rarted at low speed The Vert I Pak units are designed for either single speed or two fan speed operation For single speed operation refer to the airflow table below and select the most appropriate CFM based on the ESP level Connect the fan output from the thermostat to the unit on either the GL terminal for low speed or to the GH terminal for high speed operation For thermostats with two speed fan outputs connect the low speed output to the unit GL terminal and the high speed output to the GH terminal Ductwork Preparation If flex duct is used be sure all the slack is pulled out of the flex duct Flex duct ESP can increase considerably when not fully extended DO NOT EXCEED a total of 30 ESP as this is the MAXIMUM design limit for the VERT I PAK A Series unit IMPORTANT FLEX DUCT CAN COLLAPSE AND CAUSE AIRFLOW RESTRICTIONS DO NOT USE FLEX DUCT FOR 90 DEGREE BENDS OR UNSUPPORTED RUNS OF 5 FT OR MORE Fresh Air Door The Fresh Air Door is an intake system The fresh air door opened via a slide on the front of the chassis located just above the indoor coil Move the s
27. SERVICING VPAWP1 14 OUTDOOR GRILLE GENERAL UNIT INEORMATION VPA MAX OUTLET AIR TEMPERATURE 200 F MAX EXTERNAL STATIC PRESSURE ELECTRIC INDOOR GRILLE 5 IN WATER VPRG1 O CLEARANCE TO COMBUSTIBLE MATERIAL VPRG2 VPRG5 USE ON SINGLE OUTLET CIRCUIT ONLY AA WARNING NOTICE ELECTRIC SHOCK HAZARD Turn off electric power before service or instal Not following the previous WARNING could result lation All electrical connnections and wiring in fire or electrically unsafe conditions which could MUST be installed by a qualified electrician and cause moderate or serious property damage conform to the National Electrical Code and all Read understand and follow the previous warning local codes which have jurisdiction Failure to do so can result in personal injury and or death Wire Size Use ONLY wiring size recommended for single outlet branch circuit Fuse Circuit Break Use ONLY time delayed fused disconnect or HACR type circuit breaker as indicated on the unit s rating plate Proper use vircult Breaker current protection to the unit is the responsibility of the owner Unit MUST be grounded from branch circuit to unit or through separate ground wire provided on permanently connected units Grounding sure that branch circuit outlet is grounded Use recommended wire size given in tables and install a single branch circuit All wiring must comply with local and national codes NOTE Use copper conduct
28. ULB TEMP DEGREES F AT 80 F D B T9 10405 9697 10304 9715 8967 9890 9200 5142 9274 8237 7255 8763 7666 6767 rer 835 esa 939 1015 1017 1067 1064 ER er a Tag Tas 45 46 46 2 ort 052 ota 5 055 075 096 055 ost 095 1284 1340 1340 1344 EE 1210 1217 16917 2854 2864 Fus 12 0 52 076 09 CH N a 74 11500 1186 530 1 072 92 17000 8 1868 820 9 0 70 48 23000 7 2527 SE 2110 9 2 076 09 1917 2854 11 9 0 76 gt Sola Sale S S 2 T Z S 2 Z Z T 2 5 2 D d Al Col al Sol ol 41 Sz Gy L lait TF 10178 11592 5 1 078 a 1281 7 48 3 57 57 7 0 92 0 poe 052 07 057 52 16558 18 15045 17136 15215 13413 7 1698 1 1868 2019 2017 2023 3 74 82 88 88 89 8 089 0 0 90 0 50 0 74 0 90 88 22402 24 20355 25184 205851 18147 9 2297 2 2527 2732 2729 2737 5 95 1 10 7 114 114 114 8 089 0 0 90 0 50 0 74 0 90 AT POINT ARI 310 380 ELECTRONIC CONTROL BOARD FEATURES The new Friedrich Vert I Pak has state of the art features to improve guest comfort and conserve energy Through the use of specifically designed con
29. ant is directed into the liquid dryer after which the refrigerant is metered through the heating capillary tubes to outdoor coils Note liquid refrigerant will also be directed through the cooling capillary tubes in a continuous loop during the heating mode 27 28 REVERSING VALVE DESCRIPTION OPERATION A WARNING ELECTRIC SHOCK HAZARD Disconnect power to the unit before servicing Failure to follow this warning could result in serious injury or death The Reversing Valve controls the direction of refrigerant flow to the indoor and outdoor coils It consists of a pressure operated main valve and a pilot valve actuated by a solenoid plunger The solenoid is energized during the heating cycle only The reversing valves used in the PTAC system is a 2 position 4 way valve The single tube on one side of the main valve body is the high pressure inlet to the valve from the compressor The center tube on the opposite side is connected to the low pressure suction side of the system The other two are connected to the indoor and outdoor coils Small capillary tubes connect each end of the main valve cylinder to the A and B ports of the pilot valve A third capillary is a common return line from these ports to the suction tube on the main valve body Four way reversing valves also have a capillary tube from the compressor discharge tube to the pilot valve The piston assembly in the main valve can only be shifted by the pr
30. ate zone and occupancy larger areas may require the use of multiple units to provide the optimal cooling solution THERMISTORS RESISTANCE VALUES This Table Applies to Thermistors FAHRENHEIT RESISTANCE K Ohms RESISTANCE TOLERANCE 0 92 411 97 662 102 912 5 38 5 38 5 78 541 82 812 87 083 5 16 5 16 10 66 866 70 339 73 812 4 94 4 94 15 57 039 59 864 62 688 4 72 4 72 20 48 763 51 060 53 357 4 50 4 50 25 41 786 43 654 45 523 4 28 4 28 30 35 896 37 415 38 934 4 06 4 06 31 34 832 36 290 37 747 4 02 4 02 32 33 803 35 202 36 601 3 97 3 97 33 32 808 34 150 35 492 3 93 3 93 34 31 846 33 133 34 421 3 89 3 89 35 30 916 32 151 33 386 3 84 3 84 36 30 016 31 200 32 385 3 80 3 80 37 29 144 30 281 31 418 3 75 3 75 38 28 319 29 425 30 534 3 76 3 77 39 27 486 28 532 29 579 3 67 3 67 40 26 697 27 701 28 704 3 62 3 62 45 23 116 23 931 24 745 3 40 3 40 50 20 071 20 731 21 391 3 18 3 18 55 17 474 18 008 18 542 2 96 2 96 60 15 253 15 684 16 115 2 75 2 75 65 13 351 13 697 14 043 2 53 2 53 66 13 004 13 335 13 666 2 48 2 48 67 12 668 12 984 13 301 2 44 2 44 68 12 341 12 644 12 947 2 39 2 39 69 12 024 12 313 12 603 2 35 2 35 70 11 716 11 993 12 269 2 31 2 31 71 11 418 11 68
31. auge For VPAK Heat Pumps 9 18K Electrical Data Heater Watts Voltage Heating BTU h Heating Current Amps Minimum CircuitAmpacty 15 199 286 15 199 286 15 199 286 Branch Circuit Fuse Amps LRA Compressor Amps 18 5 18 5 Basic heater Size 2 5 Kw 3 4 Kw 5 0 Kw 2 5 Kw 3 4 Kw 5 0 Kw 2 5 Kw 3 4 Kw 5 0 Kw Power Connection HARD WIRED HARD WIRED HARD WIRED 15 Recommended Branch Circuit Wire Sizes AWG American Wire Gauge 14 12 10 14 12 10 12 AWG American Wire Gauge Single circuit from main box Based on copper wire single insulated conductor at 60 For VPAK Cool with Electric Heat 24K For VPAK Heat Pumps 24K Electrical Data Heater Watts 2500 2050 Voltage Heating BTU h 8500 7000 Heating Current Amps 10 9 9 9 14 8 13 4 21 7 19 7 32 6 29 5 43 5 39 3 10 9 9 9 14 8 13 4 21 7 19 7 32 6 29 5 43 5 39 3 Minimum Circuit Ampacity 17 2 15 9 22 1 20 3 30 7 28 1 44 3 40 3 57 9 52 7 17 2 15 9 22 1 20 3 30 7 28 1 44 3 40 3 57 9 52 7 Branch Circuit Fuse Amps 25 25 30 45 60 25 25 30 45 60 LRA Compressor Amps 34 8 34 8 34 8 34 8 34 8 34 8 34 8 34 8 34 8 34 8 Cooling Current Amps 10 0 10 4 10 0 10 4 10 0 10 4 10 0 10 4 10 0 10 4 10 6 10 9 10 6 10 9 10 6 10 9 10 6 10 9 10 6 10 9 Basic heater Size 2 5 Kw 3 4 Kw 5 0 Kw 7 5 Kw 10 0 Kw 2 5 Kw 3 4 Kw 5 0 Kw Power Connection HARD WIRED HARD WIRED Recommended Branch Circuit Wire Sizes AWG 10 10
32. ble of detect ing HFC Hydrofluorocarbon refrigerants 8 Accurate refrigerant charge measuring device such as a Balance Scales 1 2 oz accuracy b Charging Board 1 2 oz accuracy 4 WARNING RISK OF ELECTRIC SHOCK Unplug and or disconnect all electrical power to the unit before performing inspections maintenances or service Failure to do so could result in electric shock serious injury or death A WARNING HIGH PRESSURE HAZARD Sealed Refrigeration System contains refrigerant and oil under high pressure Proper safety procedures must be followed and proper protective clothing must be worn when working with refrigerants Failure to follow these procedures could result in serious injury or death Refrigerant Charging Proper refrigerant charge is essential to proper unit opera tion Operating a unit with an improper refrigerant charge will result in reduced performance capacity and or efficiency Accordingly the use of proper charging methods during ser vicing will insure that the unit is functioning as designed and that its compressor will not be damaged 9 High Pressure Gauge 0 750 Ibs 10 Low Pressure Gauge 30 200 Ibs 11 Vacuum Gauge 0 1000 microns 12 Facilities for flowing nitrogen through refrigeration tubing during all brazing processes EQUIPMENT MUST BE CAPABLE OF 1 Recovering refrigerant to EPA required levels 2 Evacuation from both the high side and low
33. cated circuit within the specified amperage rating Connect to a properly grounded electrical circuit only Do not use extension cords with the unit Failure to follow these instructions can result in fire and minor to serious property damage WATER DAMAGE HAZARDS Improper installation maintenance or servicing of the air conditioner unit or not following the above Safety Warnings can result in water damage to personal items or property Insure that the unit is level to allow water to drain from the unit Do not drill holes in the bottom of the drain pan or the underside of the unit Failure to follow these instructions can result in result in damage to the unit and or Minor to serious property damage INTRODUCTION This service manual is designed to be used in conjunction with the installation manuals provided with each unit This service manual was written to assist the professional HVAC service technician to quickly and accurately diagnose and repair any malfunctions of this product This manual therefore will deal with all subjects in a general nature e All text will pertain to all models IMPORTANT It will be necessary for you to accurately identify the unit you are servicing so you can be certain of a proper diagnosis and repair See Unit Identification Model Identification Guide MODEL NUMBER SERIES L MARKETING SUFFIX V Vertical Series Indicates Modification subject to change E Cooling with or without e
34. cription VEA12K25RTL B VEA12K34RTL B VEA12K50RTL B VEA18K25RTL B VEA18K34RTL B VEA18K50RTL B VHA09K25RTL B VHA09K34RTL B VHA09K50RTL B VHA12K25RTL B VHA12K34RTL B VHA12K50RTL B VHA18K25RTL B VHA18K34RTL B VHA18K50RTL B 80074936 COMPRESSOR K VEAOSK25RTL B VEAOSK34RTL B VEAOSKSORTL B 80074939 COMPRESSOR 80074938 COMPRESSOR 80074937 COMPRESSOR 80077146 COMPRESSOR 80023703 BASEPAN 80023702 BASEPAN 60179904 CONDENSATE DRAIN VALVE 01389903 TUBE CAP Cooling 03760473 TUBE CAP Cooling 01389915 TUBE CAP Cooling 01389985 TUBE CAP Cooling 03760513 03760518 TUBE CAP Cooling 01390212 TUBE CAP Cooling 03760511 TUBE CAP Heating TUBE CAP Heating 80006870 FAN MOTOR 61776900 MOTOR MOUNT XQ 25076004 VALVE CHECK 25076003 VALVE CHECK 25022022 VALVE REV 4 WAY DUNAN 25022032 VALVE REV 4 WAY DUNAN 91400400 COMPRESSOR STUD 61028900 COMPRESSOR GROMMET 6 oo ol uu on 5 5 5 5 5 2 S S S e eS S Reference Number 80050200 MOTOR RISER my N 80041750 COIL EVAPORATOR e N 80048150 COIL EVAPORATOR uy w 80041960 COIL CONDENSER uy w 80041971 COIL CONDENSER
35. d refrigerant Failure to follow these procedures could result in minor to moderate injury 10 Recharge the system with the correct amount of refrigerant The proper refrigerant charge will be found on the unit rating plate The use of an accurate measuring device such as a charging cylinder electronic scales or similar device is necessary NOTE NEVER under any circumstances liquid charge a rotary compressor through the LOW side Doing so would cause permanent damage to the new compressor SPECIAL PROCEDURE IN THE CASE OF MOTOR COMPRESSOR BURNOUT A WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation Failure to do so may result in personal injury or death A WARNING HIGH PRESSURE HAZARD Sealed Refrigeration System contains refrigerant and oil under high pressure Proper safety procedures must be followed and proper protective clothing must be worn when working with refrigerants Failure to follow these procedures could result in serious injury or death A WARNING EXPLOSION HAZARD The use of nitrogen requires a pressure regulator Follow all safety procedures and wear protective safety clothing etc Failure to follow proper safety procedures result in serious injury or death 1 Recover all refrigerant and oil from the system 2 Remove compressor capillary tube and filter drier from the system 3 Flush evaporator condenser and all connecting tubing wit
36. design determines at exactly what point in the condenser the change of state i e gas to a liquid takes place In all cases however the refrigerant must be totally condensed changed to a Liquid before leaving the condenser coil The refrigerant leaves the condenser Coil through the liquid line as a warm high pressure liquid It next will pass through the refrigerant drier if so equipped It is the function of the driertotrap any moisture presentin the system contaminants and large particulate matter The liquid refrigerant next enters the metering device The metering device is a capillary tube The purpose of the metering device is to meter i e control or measure the quantity of refrigerant entering the evaporator coil In the case of the capillary tube this is accomplished by design through size and length of device and the pressure difference present across the device Since the evaporator coil is under a lower pressure due to the suction created by the compressor than the liquid line the liquid refrigerant leaves the metering device entering the evaporator coil As it enters the evaporator coil the larger area and lower pressure allows the refrigerant to expand and lower its temperature heat intensity This expansion is often referred to as boiling Since the unit s blower is moving indoor air across the finned surface of the evaporator coil the expanding refrigerant absorbs some of that heat This
37. e careful with the sharp edges and corners Wear protective clothing and gloves etc Failure to do so could result in serious injury 3 Switch the unit to the heating mode and observe the gauge readings after a few minutes running time If the system pressure is lower than normal the heating capillary is restricted 4 Ifthe operating pressures are lower than normal in both the heating and cooling mode the cooling capillary is restricted the port liquid line to the outdoor coil The flow path of the refrigerant is then through the filter drier and heating capillary to the outdoor coil Failure of the slide in the check valve to seat properly in either mode of operation will cause flooding of the cooling coil This is due to the refrigerant bypassing the heating or cooling capillary tube and entering the liquid line COOLING MODE In the cooling mode of operation liquid refrigerant from condenser liquid line enters the cooling check valve forcing the heating check valve shut The liquid refrigerant is directed into the liquid dryer after which the refrigerant is metered through cooling capillary tubes to evaporator Note liquid refrigerant will also be directed through the heating capillary tubes in a continuous loop during the cooling mode HEATING MODE In the heating mode of operation liquid refrigerant from the indoor coil enters the heating check valve forcing the cooling check valve shut The liquid refriger
38. e outdoor coil temperature sensor drops to 30 F or less for 2 consecutive minutes the unit will switch to electric heat if available Thereafter the unit will switch back to Heat Pump heat until the outdoor coil temperature sensor rises to 45 F or greater Compressor Lock Out Time The lockout feature ensures that the compressor is de energized for a period of time The timer varies randomly from 180 to 240 seconds The compressor lockout is initiated every time the compressor is off due to 1 Satisfying the T stat temperature set point 2 Changing mode to fan only or heat 3 Turning the unit off 4 Power is restored after failure 5 Line power is restored from a brown out condition Cooling Fan Delay This is only for t stat Fan Auto Mode only When unit cycles cooling ON starts the fan 5 seconds EARLY When unit cycles cooling OFF DELAYS the fan off for 30 seconds Heating Fan Delay This is only for Fan Auto Mode Fan cycles with cool heat operation and not for continuous fan mode When unit cycles Heating ON starts the fan 5 seconds EARLY When unit cycles Heating OFF DELAYS the fan off for 15 seconds Continuous fan operation enables fan to run continuously Fan Speed Change Delay Relay activation is delayed by a minimum number of seconds The default for this value is 2 seconds and is used to eliminate relay chatter Room Air Sampling Feature The room air sampling feature maintains a balanced temperatu
39. e service or installation Extreme care must be used if it becomes necessary to work on equipment with power applied Failure to do so could result in serious injury or death If the Diagnostic Service Module does not turn on 1 Make sure there is 208 230 VAC to the unit and that it is turned on 2 Disconnect the diagnostic service module s wire harness on the control board 3 Using a voltmeter check the first two pins to the left of the female connector see picture below There should be up to 5VDC 4 If there is no voltage replace the electronic control board 5 If there is voltage check the wire harness and connections at the electronic control board and the diagnostic service module 6 If the connections and the wire harness are good replace the diagnostic service module Diagnostic Service Module Service Module Connector mel a a o r lt E lt 5 a c Test here up to 5VDC If no voltage replace board If there is 5VDC check connections and cable If OK replace service module 17 18 ELECTRONIC CONTROL BOARD COMPONENTS IDENTIFICATION AND TESTING Continued See wiring diagrams pages 41 46 VPAK 24K Front High Pressure Switch Back OD COIL SENSOR Blue ID COIL SENSOR Green Not Used LL 1 AIR SENSOR 2 1 2 1 c enke v wlR Transformer voltage Selector Switch 115 230 Volts
40. ean point of contact as a good connection is a must and the other probe in turn to each compressor terminal If a reading is obtained the compressor is grounded and must be replaced Check the complete electrical system to the compressor and compressor internal electrical system check to be certain that compressor is not out on internal overload Complete evaluation ofthe system mustbe made whenever you suspect the compressor is defective If the compressor has been operating for sometime a careful examination must be made to determine why the compressor failed Many compressor failures are caused by the following conditions 1 Improper air flow over the evaporator 2 Overcharged refrigerant system causing liquid to be returned to the compressor 3 Restricted refrigerant system 4 Lack of lubrication 5 Liquid refrigerant returning to compressor causing oil to be washed out of bearings 6 Noncondensables such as air and moisture in the system Moisture is extremely destructive to a refrigerant system 31 32 COMPRESSOR REPLACEMENT Recommended procedure for compressor replacement A WARNING RISK OF ELECTRIC SHOCK Unplug and or disconnect all electrical power to the unit before performing inspections maintenances or service Failure to do so could result in electric shock serious injury or death 1 Be certain to perform all necessary electrical and refrigeration tests to be sure the compressor is
41. ed EXAMPLE Airflow requirements are calculated as follows Having a wet coil creates additional resistance to airflow This addit ional resistance must be taken into consideration to obtain accurate airflow information Determining the Indoor CFM Chart A CFM Model oo 340 385 420 290 250 Highlighted values indicate rated performance point Rated performance for VEA12 Rated Performance for VHA12 Model 20 690 740 Highlighted values indicate rated performance point 22 Correct if needed Chart B Correction Multipliers Correction Multipliers for 208V 0 97 Cooling 095 Explanation of charts Chart A is the nominal dry coil VERT I PAK CFMs Chart B is the correction factors beyond nominal conditions 1 72 TON SYSTEM 18 000 Btu Operating on high speed 230 volts with dry coil measured external static pressure 10 Air Flow 450 In the same SYSTEM used in the previous example but having a WET coil you must use a correction factor of 95 i e 450 x 95 428 to allow for the resistance internal of the condensate on the coil Itis important to use the proper procedure to check external Static Pressure and determine actual airflow Since in the case of the VERT I PAK the condensate will cause a reduction in measured External Static Pressure for the given airflow It is also important to remember that when dealing with VE
42. ed Clean the coils and base pan with a soft brush and compressed air or vacuum A pressure washer may also be used however you must be careful not to bend the aluminum fin pack Use a sweeping up and down motion in the direction of the vertical aluminum fin pack when pressure cleaning coils Note It is extremely important to insure that none of the electrical and or electronic parts of the unit get wet Be sure to cover all electrical components to protect them from water or spray 3 Fresh Air Vent Ensure the fresh air vent door and lever are operating properly 4 Fan Motor amp Compressor The fan motor amp compressor and are permanently lubricated and require no additional lubrication 5 Drain System Inspect the drain system periodically annually or semi annually and clean as required Under extreme conditions more frequent cleaning may be necessary Clean these areas with an antibacterial and antifungal cleaner Rinse both items thoroughly with water and ensure that the drain outlets are operating properly 33 n FRIEDRICH ROOM AIR CONDITIONER UNIT PERFORMANCE TEST DATA SHEET JOB NAME TECHS NAME DATE MODEL SERIAL HOW IS ALL OF THE INSTALLATION GOOD BAD YES NO IS THE UNIT INSTALLED 2 3 8 INTO THE PLENUM IS THE FRESH EXAUST AIR VENT OPEN IS A FRIEDRICH H WALL PLENUM INSTALLED IS A FRIEDRICH OUTDOOR GRILLE INSTALLED IS MAINTENANCE BEING PERFORMED If NO is checked use back of sheet f
43. ely read the voltage on the meter The compressor under these conditions will not start and will usually kick out on overload within a few seconds since the pressures in the system will not have had time to equalize Voltage should be at or above minimum voltage of 197 VAC as specified on the rating plate If less than minimum check for cause of inadequate power supply i e incorrect wire size loose electrical connections etc Amperage L R A Test The running amperage of the compressor is the most impor tant of these readings A running amperage higher than that indicated in the performance data indicates that a problem exists mechanically or electrically Single Phase Running and L R A Test NOTE Consult the specification and performance section for running amperage The L R A can also be found on the rating plate Select the proper amperage scale and clamp the meter probe around the wire to the terminal of the compressor Turn on the unit and read the running amperage on the me ter If the compressor does not start the reading will indicate the locked rotor amperage L R A Overloads The compressor is equipped with an external or internal overload which senses both motor amperage and winding temperature High motor temperature or amperage heats the overload causing it to open breaking the common circuit within the compressor Heat generated within the compressor shell usually due to recycling of the mo
44. er KW Numbers Vary Extended Cooling Performance Data VEA EXTENDED COOLING PERFORMANCE OUTDOOR DRY BULB TEMP DEGREES F AT 40 E Eeer Model s VE WATTS 01 653 972 e 655 Wer ss rae AMPS SHR WATTS 557 SAR BTUh 19992 VEA18 WATTS 54 5 0 48 BTUh 2 WATTS 9 VEA24 AMPS 0 48 VHA EXTENDED COOLING PERFORMANCE Model VHA09 VHA12 VHA18 VHA24 gt u 4 gt U A eo m 2 al o N SAT l 35 38 42 420 42 45 45 45 47 47 47 7 sz 0 77 0 35 0 52 0 74 0 95 0 53 078 0 96 055 081 0 05 io 12144 1201 12374 41500 10178 11592 10293 9074 10954 9585 8458 52 ps 52 5 55 58 55 59 55_ sar 840 er ary ary RER 3 049 0 70 0 30 0 50 074 0 50 0 52 0 76 09 02 24748 23000 20355 23184 20585 18147 21908 19171 16917 112421 0 0 49 I II gt D Ul 4 ef ale N N NI EINE 0 88 0 88 A o N A On o D EN o col NIs e x S N os eg ra N oO NI e ep NIO N 24288 Cer R 2421 2421 2622 10 00 10 1 10 8 108 108 113 113 113 0 70 09 05 074 09 052 076 09 RATING POINT ARI 310 380 OUTDOOR DRY BULB TEMP DEGREES F AT 40 85 110 INDOOR WET B
45. essure differential between the high and low sides TESTING THE COIL A WARNING ELECTRIC SHOCK HAZARD Unplug and or disconnect all electrical power inspections to the unit before performing maintenances or service Failure to do so could result in electric shock serious injury or death The solenoid coil is an electromagnetic type coil mounted on the reversing valve and is energized during the operation of the compressor in the heating cycle Turn off high voltage electrical power to unit Unplug line voltage lead from reversing valve coil 3 Check for electrical continuity through the coil If you do not have continuity replace the coil 4 Check from each lead of coil to the copper liquid line as it leaves the unit or the ground lug There should be no continuity between either of the coil leads and ground if there is coil is grounded and must be replaced If coil tests okay reconnect the electrical leads 6 Make sure coil has been assembled correctly of the system The pilot section of the valve opens and closes ports for the small capillary tubes to the main valve to cause it to shift NOTE System operating pressures must be near normal before valve can shift PILOT SOLENOID VALVE FROM VALVE DISCHARGE TO OUTDOOR 4 WAY REVERSING VALVE NOTE Do not start unit with solenoid coil removed from valve or do not remove coil after unit is in operation This will cause the coil to burn out CHECK
46. etc System airflow should always be verified upon completion of a new installation or before a change out compressor replacement or in the case of heat strip failure to insure that the failure was not caused by improper airflow Inclined Manometer Return Checking External Static Pressure The airflow through the unit can be determined by measuring the external static pressure of the system and consulting the blower performance data for the specific VERT I PAK 1 Set up to measure external static pressure at the supply and return air 2 Ensure the coil and filter are clean and that all the registers are open 3 Determine the external static pressure with the blower operating 4 Refer to the Air Flow Data for your VERT I PAK System to find the actual airflow for factory selected fan speeds 5 If the actual airflow is either too high or too low the blower speed will need to be changed to appropriate setting or the ductwork will need to be reassessed and corrections made as required 6 Select a speed which most closely provides the required airflow for the system 7 Recheck the external static pressure with the new speed External static pressure and actual airflow will have changed to a higher or lower value depending upon speed selected Recheck the actual airflow at this new static pressure to confirm speed selection 8 Repeat steps 8 and 9 if necessary until proper airflow has been obtain
47. exas 77054 Hallandale Florida 33009 504 464 7444 713 747 4110 954 962 0252 877 813 7444 800 458 4110 800 962 3383 Alamo Service Company Johnstone Supply of Woodside 1450 North Flores Street 27 01 Brooklyn Queens Expway San Antonio Texas 78212 Woodside New York 11377 210 227 2450 718 545 5464 800 328 2450 800 431 1143 TECHNICAL SUPPORT CONTACT INFORMATION FRIEDRICH FRIEDRICH AIR CONDITIONING CO 10001 Reunion Place Ste 500 San Antonio TX 78216 210 546 0500 877 599 5665 261 FAX 210 546 0631 Email tac friedrich com www friedrich com Printed in the U S A Printed in the U S A VPK ServMan L 4 11 59 g FRIEDRICH FRIEDRICH AIR CONDITIONING CO 10001 Reunion Place Ste 500 San Antonio TX 78216 210 546 0500 F 210 546 0731 www friedrich com Printed in the U S A VPK ServMan L 4 11
48. g esn apow pezI5Jou oc eof Buloo oj lleO HUN uo JSMOd OVAvz s 2101 02s 31IHM FI qasn LON O AVY AV1 AY v Nei SNOILO3NNOO LIVLSOWHAHL m a op o o v MA OG MA NM ST HILVIH OL ADVLIOA LAS HOLIMS NOI19 1 S ADVLIOA Gm YOLOW OL 7109 GION310S HNTVASNISH3A3H 53NNOOSIO yOInO Movia OSN S HIV 1N I WV HOLOW TVNINHIL HOSSIHANOD MB L MEL M6 VHA MAO S MAYE dWNd LV3H INVHOVIG DNIHIM SVS OO IVNIWIL HIHSVM 42 COOL WITH ELECTRIC HEAT ELECTRICAL amp THERMOSTAT WIRING DIAGRAM VEA 24 with 2 5 KW ple DI9 1V1S ue speeds OML 9LH Nowwoo 2 ue uBiH 10 leo u9 ue MO710 IIBOHS g esn apow Buneeu ul pezI6Jeu 5ulsJeAea gio BuneeH 10 M Buij009 10 lleO Jun wo u SS NaVH ONIYIM LVISL ON 5 1 L0909LZ6 ON RIVE SNOILO3NNOO LVLSOWH3IHL m ol Ira gt v IT JE li m s a 3 4 KW or 5KW ELECTRIC HEAT OL ADVLIOA 135 OSN S 1109 HOOQNI OSN S 1109 HOOG10nO TOHLNOD OINOH IO3 13 NOV 20 Z1 a sn LON qasn LON ANT3
49. h dry nitrogen or equivalent Use approved flushing agent to remove all contamination from system Inspect suction and discharge line for carbon deposits Remove and clean if necessary Ensure all acid is neutralized 4 Reassemble the system including new drier strainer and capillary tube 5 Proceed with step 8 10 on previous page ROUTINE MAINTENANCE ELECTRICAL SHOCK HAZARD Turn off electrical power before service or installation All eletrical connections and wiring MUST be installed by a qualified electrician and conform to the National Code and all local codes which have jurisdiction Failure to do so can result in property damage personal injury and or death To ensure proper unit operation and life expectancy the following maintenance procedures should be performed on a regular basis 1 Air Filter To ensure proper unit operation the air filters should be replaced at least monthly and more frequently if conditions warrant 2 Coils amp Chassis NOTE Do not use a caustic coil cleaning agent on coils or base pan Use a biodegradable cleaning agent and degreaser The use of harsh cleaning materials may lead to deterioration of the aluminum fins or the coil end plates The indoor coil and outdoor coils and base pan should be inspected periodically annually or semi annually and cleaned of all debris lint dirt leaves paper etc as necessary Under extreme conditions more frequent cleaning may be requir
50. inue to monitor for OPEN Unstuck switch Do not process switch input Input Voltage Out of Specification 187 253 Unit stops open all relays until voltage is back within specs then resume operation Indoor Temperature Sensor is Open or Shorted Unit defaults to 75 F in COOLING or 68 F in HEATING and will continue to operate if setting is below 75 F in cool mode or if above 68 F in heat mode The unit s control board defaults to 40 F It will override the sensor and the unit will Indoor Coil Temperature Sensor is Open or Shorted continue to operate The unit defaults to 20 F overriding the sensor The unit will continue to operate Using Elec Heat if available for HEATING If not available it will use HEAT PUMP if Outdoor Coil Temperature Sensor is Open or Shorted the outdoor temperature allows The unit will shut down for 5 minutes resume operation for 3 minutes If test fails 3 Outdoor Coil gt grater than 175 F times the unit operation is locked out See troubleshooting page 42 To reset turn power off and on The compressor will turn off and the High Fan speed will run When coil temp reachs Indoor Coil less than 30 F for 2 consecutive minutes 45 F the unit will resume operation after lockout time Unit Cycles gt greater than 9 Times per hour The unit will continue to operate and be monitored Unit Cycles less than 3 Times per Hour The unit will continue to operate and be monitored Not Applicable Not A
51. is operating at the proper power factor percentage The instrument will automatically discharge the capacitor when the test switch is released Capacitor Connections The starting winding of a motor can be damaged by a shorted and grounded running capacitor This damage usually can be avoided by proper connection of the running capacitor terminals From the supply line on a typical 230 volt circuit a 115 volt potential exists from the terminal to ground through a possible short in the capacitor However from the S or start terminal a much higher potential possibly as high as 400 volts exists because of the counter EMF generated in the start winding Therefore the possibility of capacitor failure is much greater when the identified terminal is connected to the S or start terminal The identified terminal should always be connected to the supply line or R terminal never to the S terminal When connected properly a shorted or grounded running capacitor will result in a direct short to ground from the terminal and will blow the line fuse The motor protector will protect the main winding from excessive temperature Dual Rated Run Capacitor Hook up FAN MOTOR RUN CAPACITOR 19 20 COMPONENTS TESTING Continued HEATER ELEMENTS AND LIMIT SWITCHES SPECIFICATIONS All heat pumps and electric heat models are equipped with a heating element and a limit switch bimetal ther mostat The lim
52. it is in series with the element and will interrupt the power at a designed temperature Should the blower motor fail filter become clogged or air flow be restricted etc the high limit switch will open and interrupt the power to the heater before reaching an un safe temperature condition VPAK 9K 12K and 18K BTUs Models 2 5 KW 230 V Resistance 18 61 Ohms 5 Has 1 Limit Switch Opens at 120 F Closes at 90 F It has a One Time Open Temp of 145 F 3 4 KW 230 V Resistance 13 68 Ohms 5 Has 1 Limit Switch Opens at 120 F Closes at 90 F It has a One Time Open Temp of 145 F 5 KW 230 V Resistance 9 31 Ohms 5 Has 1 Limit Switch Opens at 130 F Closes at 100 F It has a One Time Open Temp of 155 F VPAK 24K BTUs Models 2 5 KW 230 V Resistance 18 61 Ohms 5 Has 2 Limit Switches Primary Opens at 155 F Closes at 125 F Secondary s Open Temp is 200 F 3 4 KW 230 V Resistance 13 68 Ohms 5 Has 2 Limit Switches Primary Opens at 155 F Closes at 125 F Secondary s Open Temp is 200 F 5 KW 230 V Resistance 9 31 Ohms 5 Has 2 Limit Switches Primary Opens at 155 F Closes at 125 F Secondary s Open Temp is 200 F 7 5 KW 230 V composed of 2 3 7 KW Elements Each Has a Resistance of 12 41 Ohms 5 Each Has 2 Limit Switches Primary Opens at 165 F Closes at 135 F With a 1 time Open Temp of 210 F Secondary Limit s Open Temp is 200 F 10 KW 230 V c
53. ived equipment problems A careful check of the thermostat s location and wiring must be made then to ensure that it is not the source of problems Desk Control The unit s electronic control has built in provisions for connection to an external switch to control power to the unit The switch can be a central desk control system or even a normally open door switch For desk control operation connect one side of the switch to the D1 terminal and the other to the D2 terminal See page 12 Whenever the switch closes the unit operation will stop Maximum Wire Length for Desk Control Switch Wire Size Maximum Length 24 400 ft 600 ft 900 ft 1500 ft 2000 ft Auxiliary Fan Control The electronic control also has the ability to control a 24 VAC relay to activate an auxiliary or transfer fan The outputs are listed as F1 and F2 on the interface connector See page 12 To connect the relay simply wire one side of the relay to F1 and the other side to F2 Anytime that the fan runs the terminals will send a 24 VAC signal to the relay The relay must be 24 VAC 50mA or less Note The Desk Control Auxiliary Fan relay and wires must be field supplied SERVICE 4 WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation Extreme care must be used if it becomes necessary to work on equipment with power applied Failure to do so could result in serious injury or death
54. lectric heat B ENGINEERING SUFFIX H Heat Pump Indicates Modification subject to change DESIGN SERIES A 32 and 47 Cabinet NOMINAL CAPACITY A Series Btu h 09 9 000 12 12 000 RT Standard Wired Remote T stat Operation ELECTRIC HEATER SIZE A Series 00 No electric heat 18 18 000 anmann 24 24 000 50 5 0 KW VOLTAGE 75 7 5 KW K 208 230V 1Ph 60Hz 10 10 KW VPAK Serial Number Identification Guide SERIAL NUMBER 00001 YEAR MANUFACTURED PRODUCTION RUN NUMBER 2010 2015 2011 2016 2012 AG 2017 PRODUCT LINE AC 2013 2018 N VPAK AD 2014 2019 MONTH MANUFACTURED A Jan D Apr G Jul B Feb Aug Mar J Sep Sample Nameplate see your chassis nameplate MODEL NO AW LISTED SERIAL NO FRIEDRICH AIR CONDITIONING CO 120524 SAN ANTONIO TEXAS HEATING AND VOLTS Be ELECTRICAL SHOCK AND COOLING EQUIPMENT REFRIG CHARGE DESIGN PRESSURE MOVI NG PARTS HAZARD APPLICABLE PATENTS US COOLING BTU HR 6 065 296 SEER COP CAN CAUSE INJURY OR HEAT PUMP BTU HR NY MEA NO 295 00 E TOTAL COOLING AMPS USE ONE OF THE TOTAL ELEC HEAT AMPS FOLLOWING ITEMS ELECTRIC HEAT WATTS ROM EACH CATEGORY FOR PERMANENTLY CONNECTED UNITS ONLY TO COMPLETE THE COMP PLA LRA ASSEMBLY MOTOR FLA HP HEATER AMPS WALL PLENUM MIN CKT 0 USE 1 MAX TIME DELA VPAWP1 8 OR HACR TYPE CIRCUIT BREAKER
55. lide in the valve body from shifting If you determing this is the problem replace the reversing valve After all of the previous inspections and checks have been made and determined correct then perform the Touch Test on the reversing valve FROM OUTDOOR COIL TO COMPRESSOR SUCTIO BOTH THE SAME TEMPERATURE BOTH THE SAME TEMPERATURE Reversing Valve in Cooling Mode Touch Test in Heating Cooling Cycle A WARNING BURN HAZARD Certain unit components operate at temperatures hot enough to cause burns 2 Proper safety procedures must be followed and proper protective clothing must be bli worn Failure to follow these procedures could result in minor to moderate injury The only definite indications that the slide is in the mid position is if all three tubes on the suction side of the valve are hot after a few minutes of running time NOTE A condition other than those illustrated above and on Page 31 indicate that the reversing valve is not shifting properly Both tubes shown as hot or cool must be the same corresponding temperature Procedure For Changing Reversing Valve 4 WARNING HIGH PRESSURE HAZARD Sealed Refrigeration System contains refrigerant and oil under high pressure Proper safety procedures must be followed and proper protective clothing must be worn when working with refrigerants Failure to follow these procedures could result in serious injury or death NOTICE FI
56. lide left to open and right to close the fresh air door The system is capable of up to 60 CFM of fresh air 3 H20 internal static pressure Checking Approximate Airflow If an inclined manometer or Magnehelic gauge is not available to check the External Static Pressure or the blower performance data is unavailable for your unit approximate air flow call be calculated by measuring the temperature rise then using tile following criteria KILOWATTS x 3413 Temp Rise x 1 08 Electric Heat Strips The approximate CFM actually being delivered can be calculated by using the following formula CFM DO NOT simply use the Kilowatt Rating of the heater i e 2 5 3 4 5 0 as this will result in a less than correct airflow calculation Kilowatts may be calculated by multiplying the measured voltage to the unit heater times the measured current draw of all heaters ONLY in operation to obtain watts Kilowatts are than obtained by dividing by 1000 EXAMPLE Measured voltage to unit heaters is 230 volts Measured Current Draw of strip heaters is 11 0 amps 230 x 11 0 2530 2530 1000 2 53 Kilowatts 2 53 x 3413 8635 Supply Air 95 Air 75 F Temperature Rise 20 20 1 08 21 6 e 400 CFM 216 REFRIGERATION SEQUENCE OF OPERATION A good understanding of the basic operation of the refrigeration system is essential for the service technician Without this understanding accurate troubleshooting of
57. locked out the cooling cycle begins The fan is started 5 seconds prior to the compressor Once the ambient temperature has been lowered to the cool set point the cooling cycle starts to terminate by shutting off the compressor After a 30 seconds delay the fan is shut off Heating Mode Control Operation There are two heating methods Heat Pump and Electric Resistance Heat There are 2 types of units that provide heating Heat Pump with Electric Heat and Cool with Electric Heat Heat Mode in Cool with Electric Heat Units When the t stat is in the Heat Mode if the indoor ambient temperature is below the heat set point the fan turns on 5 seconds prior then the electric heat will turn on When the t stat is satisfied the electric heat will turn off The fan turns off 15 seconds later Heat Pump With Electric Heat Operation This heating has two heating methods If the ambient indoor temperature is below the heat set point and the compressor is not locked out the compressor turns on If the ambient temperature rises above the t stat s heat set point the compressor turns off If the Compressor is Locked Out on the 3 Minute Time Delay and Electric Heat is Available 1 The control turns on the electric heat until the compressor is not locked out 2 After lockout the control turns off the electric heat waits 5 seconds then turns on the compressor The wired remote wall t stat s time delay may override this feature Condition 1 If th
58. lutions to these problems There are two types of refrigerant restrictions Partial restrictions and complete restrictions A partial restriction allows some of the refrigerant to circulate through the system With a complete restriction there is no circulation of refrigerant in the system Restricted refrigerant systems display the same symptoms as a low charge condition When the unit is shut off the gauges may equalize very slowly Gauges connected to a completely restricted system will run in a deep vacuum When the unit is shut off the gauges will not equalize at all A quick check for either condition begins at the evaporator With a partial restriction there may be gurgling sounds at the metering device entrance to the evaporator The evaporator in a partial restriction could be partially frosted or have an ice ball close to the entrance of the metering device Frost may continue on the suction line back to the compressor Often a partial restriction of any type can be found by feel as there is a temperature difference from one side of the restriction to the other With a complete restriction there will be no sound at the metering device entrance An amperage check of the compressor with a partial restriction may show normal current when compared to the unit specification Improper air flow over the evaporator coil may indicate some of the same symptoms as an over charged system An overcharge can cause the com
59. n and the compressor must be replaced LINE BREAK INTERNAL OVERLOAD Internal Overload 4 WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation Extreme care must be used if it becomes necessary to work on equipment with power applied Failure to do so could result in serious injury or death Remove the leads from the compressor terminals and set the ohmmeter on the lowest scale R x 1 Touch the leads of the ohmmeter from terminals common to start C to S Next touch the leads of the ohmmeter from terminals common to run C to R Add values to S and to together and check resistance from starttorun terminals S to R Resistance S to should equal the total of C to S and C to R In a single phase PSC compressor motor the highest value will be from the start to the run connections S to The next highest resistance is from the start to the common connections S to The lowest resistance is from the run to common C to R Before replacing a compressor check to be sure it is defective NOTE OHMFigures are for examples only not actual values for the compressor 3 16 OHMS A8 OHMS 3 65 OHMS RESISTANCE StoC RESISTANCE RtoC EQUALS RESISTANCE StoR GROUND TEST Use an ohmmeter set on its highest scale Touch one lead to the compressor body cl
60. njury or property damage which may result to you or others Your safety and the safety of others are very important We have provided many important safety messages in this manual and on your appliance Always read understand and obey all safety messages This is a safety Alert symbol This symbol alerts you to potential hazards that can kill or hurt you and others All safety messages will follow the safety alert symbol with the word WARNING or CAUTION These words mean A WARN You be killed or seriously injured if you do not follow instructions A CAUTION You can receive minor or moderate injury if you do not follow instructions All safety messages will tell you what the potential hazard is tell you how to reduce the chance of injury and tell you what will happen if the instructions are not followed A message to alert you of potential property damage will have the NO TICE word NOTICE Potential property damage can occur if instructions are not followed PERSONAL INJURY OR DEATH HAZARDS ELECTRICAL HAZARDS e Unplug and or disconnect all electrical power to the unit before performing inspections maintenance or service e Make sure to follow proper lockout tag out procedures e Always work in the company of a qualified assistant if possible e Capacitors even when disconnected from the electrical power source retain an electrical charge potential capable of causing electric shock or electrocuti
61. ntrolled by using a single stage heat cool remote wired wall mounted thermostat Thermostat Selection Friedrich recommends the use of the Friedrich RT4 and RT6 These thermostats are single stage heat cool manual changeover The RT4 is a digital display thermostat with single speed fan control The RT6 features a digital display two fan speed selection temperature limiting status indicator light room temperature offset and backlight Other thermostats may be used as long as they are single stage heat cool and are configured correctly for the unit Thermostat terminals requirements For cooling with electric heat units C R G Y W For heat pump units C R G Y W B For two fan speeds thermostat must have 2 fan speed selection HEAT PUMP UNITS During Heat Mode The B terminal must be continuously energized The W terminal must have 24 VAC output to call for heat The control board decides on whether to turn on the Heat Pump Heat compressor or Electric Heat The Y terminal should not have 24 VAC output during heat mode Connecting a Remote Wall Thermostat A WARNING ELECTRIC SHOCK HAZARD Disconnect power to the unit before servicing Failure to follow this warning could result in serious injury or death CAUTION It is the installer s responsibility to ensure that all control wiring connections are made in accordance with the installation instructions Improper connection of the thermostat control
62. of the overload will eventually lead to compressor motor or overload failure Method Of Charging Repairs The acceptable method for charging the RAC system is the Weighed in Charge Method The weighed in charge method is applicable to all units It is the preferred method to use as it is the most accurate The weighed in method should always be used whenever a charge is removed from a unit such as for a leak repair compressor replacement or when there is no refrigerant charge left in the unit To charge by this method requires the following steps 1 Install a piercing valve to remove refrigerant from the sealedsystem Piercing valve must be removed from the system before recharging 2 Recover Refrigerant in accordance with EPA regulations A WARNING BURN HAZARD Proper safety procedures must be followed and proper protective clothing must be worn when working with a torch 2w a E Failure to follow these procedures could result in moderate or serious injury 3 Install a process tube to sealed system A WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation Extreme care must be used if it becomes necessary to work on equipment with power applied Failure to do so could result in serious injury or death HIGH PRESSURE HAZARD Sealed Refrigeration System contains refrigerant and oil under high pressure Proper safety procedures must be followed and proper pr
63. omposed of 2 5 KW Elements Each Has a Resistance of 9 31 5 Each Has 2 Limit Switches Primary Opens at 165 F Closes at 135 F With a 1 time Open Temp of 210 F Secondary Limit s Open Temp is 200 F NOTE Always replace with an exact replacement TESTING THE HEATING ELEMENTS AND LIMIT SWITCHES A WARNING ELECTRIC SHOCK HAZARD Disconnect power to the unit before servicing Failure to follow this warning could result in serious injury or death Testing of the heating elements can be made with an ohmmeter or continuity tester across the terminals after the power wires have been removed Test the limit switch for continuity across its input and output terminals Test below the limit switch s reset temperature DRAIN PAN VALVE During the cooling mode of operation condensate which collects in the drain pan is picked up by the condenser fan blade and sprayed onto the condenser coil This assists in cooling the refrigerant plus evaporating the water During the heating mode of operation it is necessary that water be removed to prevent it from freezing during cold outside temperatures This could cause the condenser fan blade to freeze in the accumulated water and prevent it from turning To provide a means of draining this water a bellows type drain valve is installed over a drain opening in the base pan This valve is temperature sensitive and will open when the outside temperature reaches 40 F The valve
64. on e Handle discharge and test capacitors according to safe established standards and approved procedures e Extreme care proper judgment and safety procedures must be exercised if it becomes necessary to test or troubleshoot equipment with the power on to the unit Do not spray or pour water on the return air grille discharge air grille evaporator coil control panel and sleeve on the room side of the air conditioning unit while cleaning Electrical component malfunction caused by water could result in electric shock or other electrically unsafe conditions when the power is restored and the unit is turned on even after the exterior is dry Never operate the A C unit with wet hands Use air conditioner on a single dedicated circuit within the specified amperage rating Use on a properly grounded electrical circuit only Do not use extension cords with the unit Follow all safety precautions and use proper and adequate protective safety aids such as gloves goggles clothing adequately insulated tools and testing equipment etc Failure to follow proper safety procedures and or these warnings can result in serious injury or death REFRIGERATION SYSTEM HAZARDS Use approved standard refrigerant recovering procedures and equipment to relieve pressure before opening system for repair Do not allow liquid refrigerant to contact skin Direct contact with liquid refrigerant can result in minor to moderate injury Be extremel
65. or blower and condenser fan A self resetting overload is located inside the motor to protect against high temperature and high amperage conditions A WARNING ELECTRIC SHOCK HAZARD Disconnect power to the unit before servicing Failure to follow this warning could result in serious injury or death BLOWER FAN MOTOR TEST 1 Visually inspect the motor s wiring housing etc and determine that the capacitor is serviceable 2 Make sure the motor has cooled down 3 Disconnect the fan motor wires from the control board 4 Test for continuity between the windings also test to ground 5 If any winding is open or grounded replace the motor CAPACITORS ELECTRIC SHOCK HAZARD Turn off electric power before servicing Discharge capacitor with a 20 000 Ohm 2 Watt resistor before handling Failure to do so may result in personal injury or death Many motor capacitors are internally fused Shorting the terminals will blow the fuse ruining the capacitor A 20 000 ohm 2 watt resistor can be used to discharge capacitors safely Remove wires from capacitor and place resistor across terminals When checking a dual capacitor with a capacitor analyzer or ohmmeter both sides must be tested Capacitor Check with Capacitor Analyzer The capacitor analyzer will show whether the capacitor is open or shorted It will tell whether the capacitor is within its micro farads rating and it will show whether the capacitor
66. or explanation ELECTRICAL LINE VOLTAGE STATIC me VOLTS START UP VOLTAGE VOLTS AMPERAGE DRAW AMPS COOL AMPERAGE DRAN AMPS HEAT COMPRESSOR LOCKED ROTORAMPS AMPS AMPERAGE DRAW mee AMPS INDOOR TEMPERATURES INDOOR AMBIENT TEMPERATURE RELATIVE HUMIDITY RH INDOOR DISCHARGE AIR TEMPERATURE INDOOR RETURN AIR TEMPERATURE INDOOR DIFFERENTIAL OUTDOOR TEMPERATURE OUTDOOR AMBIENT TEMPERATURE A F RH OUTDOOR RELATIVE HUMIDITY 96 CONDENSER DISCHARGE AIR TEMPERATURE INTAKE AIR TEMPERATURE DIFFERENTIAL APPLICATION USE COOLING OR HEATING AREA W This is a general guide please consult manual J or M Sizing your air conditioner correctly is vital Sizing Guide The following guide is based on normal room insulation average number of sun exposed windows and two person occupancy 100 150 5 000 150 250 6 000 250 300 7 000 300 350 8 000 250 400 2 000 This is a general guide 400 450 10 000 450 550 12 000 Please consult manual J or for exact load calculations 550 700 14 000 700 1 000 18 000 1 If heavily shaded reduce capacity 10 1 000 1 200 21 000 2 If very sunny add 10 1 200 1 400 23 000 3 Add 500 BTU H per person over 2 people 1 400 1 600 25 000 4 Add 4 000 BTU H if area is a kitchen 1 600 1 900 28 000 1 900 2 700 36 000 Due to variations in room design clim
67. ors only Note All field wiring must comply with NEC and local codes It is the responsibility of the installer to insure that the electrical codes are met All 208 230v chassis must be hard wired with properly sized breaker See nameplate for specific chassis electrical requirements See below for unit wiring For wall thermostat wiring see page 12 Use HACR type breakers to avoid nuisance trips All field wiring must be done in accordance with NEC and local codes Supply voltage Supply voltage to the unit should be a nominal 208 230 volts It must be between 197 volts and 253 volts Supply voltage to the unit should be checked WITH THE UNIT IN OPERATION Voltage readings outside the specified range can be expected to cause operating problems Their cause MUST be investigated and corrected For VPAK Cool with Electric Heat 9 18K Electrical Data Heater Watts 2500 2050 3400 2780 5000 4090 2500 2050 3400 2780 5000 4090 2500 2050 3400 2780 5000 4090 Voltage 230 208 230 208 230 208 Heating BTU h 8500 7000 11600 9500 17000 13900 8500 7000 11600 9500 17000 13900 8500 7000 11600 9500 17000 13900 Heating Current Amps 10 9 9 9 14 8 13 4 21 7 19 7 10 9 9 9 14 8 13 4 21 7 19 7 10 9 9 9 14 8 13 4 21 7 19 7 Minimum Circuit Ampacity 15 19 9 20 30 15 30 22 22 Basic heater Size Power Connection HARD WIRED HARD WIRED HARD WIRED Recommended Branch Circuit Wire Sizes AWG American Wire G
68. otective clothing must be worn when working with refrigerants Failure to follow these procedures could result in serious injury or death CAUTION FREEZE HAZARD Proper safety procedures must be followed and proper protective clothing must be worn when working with liquid refrigerant Failure to follow these procedures could result in minor to moderate injury 4 Make necessary repairs to system 5 Evacuate system to 200 microns or less 6 Weigh in refrigerant with the property quantity of R 410A refrigerant 7 Start unit and verify performance A WARNING BURN HAZARD Proper safety procedures must be followed and proper protective clothing must be worn when working with a torch 2y IU Failure to follow these procedures could result in moderate or serious injury 8 Crimp the process tube and solder the end shut Undercharged Refrigerant Systems An undercharged system will result in poor performance low pressures etc in both the heating and cooling cycle Whenever you service a unit with an undercharge of refrigerant always suspect a leak The leak must be repaired before charging the unit To check for an undercharged system turn the unit on allow the compressor to run long enough to establish working pressures in the system 15 to 20 minutes During the cooling cycle you can listen carefully at the exit of the metering device into the evaporator an intermittent hissing and
69. oughly Allow ample time Have System for pressures to Pressures Equalized equalize No Yes Possible Compressor problem indicated Compressor should See Compressor No run Checks 36 ELECTRICAL TROUBLESHOOTING CHART COOLING Compressor and outdoor fan motor run but indoor blower does not run Yes 24V at t stat and control wiring Is Line Voltage present at Motor Leads Check Capacitor is Capacitor Good o Motor should run No No 24K BTU NO COOLING OPERATION Before continuing check for Error Insure that Fuses Codes see are good and or that Circuit Breakers electronics control on and voltage is 208 230 diagnostics on page 16 Set thermostat to l Cool move the Temp Nothing operates lever below the present entire system Room Temp appears dead Line voltage present Check Supply Circuit s Indoor blower runs but Compressor outdoor t ihe E e jumper at transformer If outdoor fan motor and blower should now Primary okay replace board compressor do not run operate Problems indicated with Control Transformer replace board 24 Volts at Terminal on board See Refrigerant Circuit diagnosis if unit still is not cooling properly 24 Volts present at Problems indicated with Y terminals on Room Thermostat or t stat and board Control Wiring Fix 3 minute delay done Wait until done on control board 208 230 Volts present at compressor
70. pplicable WallStat Problem or Connection Issue The unit will not operate Not Applicable Not Applicable If unit is cooling or heat pump is on shut down compressor Run high fan until VPAK 24K Unit Only Switch closes then resume operation The third occurance in 1 hour locks unit out High Pressure Limit Switch is Open Applicable to 24K unit only To reset turn power off and on If indoor coil temperature is less than ambient temperature for 3 minutes the unit will Heat Pump Error use electric heat to satisfy the heating demand Causes could be bad reversing valve heat load too high m Occurs if the indoor ambient temperature range falls below 0 F or greater than 130 F The Temperature beyond operating limits error code will remain on until the temperature reaches the operating range and then the unit will return to normal operation Equipment Doesn t Meet Minimum Configuration The compressor must be enabled and have at least 2 fan speeds Not Applicable Not Applicable Not ean oo Not Not Not Applicable Not INot Applicable eee Not Applicable Not t Applicable ek Coil Ga Targus lt 30 F tr2 coma lt for 2 consecutive minutes exceeds 45 F GE for Heat Pump models only Not Not TA Not Not Applicable Not INotApplicable eee COMPONENTS TESTING Testing the Diagnostic Service Module Testing the Electronic Control Board A WARNING ELECTRIC SHOCK HAZARD Turn off electric power befor
71. pressor and remove compressor Be certain to have both suction and discharge process tubes open to atmosphere 4 Carefully pour a small amount of oil from the suction stub of the defective compressor into a clean container 5 Using an acid test kit one shot or conventional kit test the oil for acid content according to the instructions with the kit 6 If any evidence of a burnout is found no matter how slight the system will need to be cleaned up following proper procedures 7 Install the replacement compressor 4 WARNING EXPLOSION HAZARD The use of nitrogen requires a pressure regulator Follow all safety procedures and wear protective safety clothing etc Failure to follow proper safety procedures result in serious injury or death 8 Pressurize with a combination of R 410A and nitrogen and leak test all connections with leak detector capable of detecting HFC Hydrofluorocarbon refrigerant Recover refrigerant nitrogen mixture and repair any leaks found Repeat Step 8 to insure no more leaks are present 9 Evacuate the system with a good vacuum pump capable of a final vacuum of 200 microns or less The system should be evacuated through both liquid line and suction line gauge ports While the unit is being evacuated seal all openings on the defective compressor CAUTION FREEZE HAZARD Proper safety procedures must be followed and proper protective clothing must be worn when working with liqui
72. pressor to fail since it would be slugged with liquid refrigerant The charge for any system is critical When the compressor is noisy suspect an overcharge when you are sure that the air quantity over the evaporator coil is correct Icing of the evaporator will not be encountered because the refrigerant will boil later if at all Gauges connected to system will usually have higher head pressure depending upon amount of over charge Suction pressure should be slightly higher Suction Pressure Noticeably High 2 Pressure Compressor Slightly Slugged with Refrigerant Overcharged System With a complete restriction the current drawn may be considerably less than normal as the compressor is running in a deep vacuum no load Much of the area of the condenser will be relatively cool since most or all of the liquid refrigerant will be stored there The following conditions are based primarily on a system in the cooling mode Accumulator Head Pressure Lower Compressor Suction Pressure Outdoor Coll Deep Vacuum Gauges will not equalize with unit shut off Completely Restricted System Reversing Valve Accumulator Head Suction Pressure Lower x Indoor Coil Outdoor Coil Gauges may equalize very slowly Partially Restricted System HERMETIC COMPONENTS CHECK 4 WARNING BURN HAZARD Proper safety procedures must be followed and proper protective clothing must be worn
73. re throughout the room by circulating the air for 90 seconds once every 9 minutes that the unit is not running when it is set to cooling or heating mode By circulating the air the unit can detect hot or cold areas in the room and operate the unit to cool or warm the room as neces sary This function is only available when the fan mode is set to AUTO during COOL or HEAT Mode 11 12 Low Voltage Interface Connections All Vert I Pak units have a low voltage interface connector through which a Remote Wall Thermostat Desk Control and Auxiliary Fan s Relay can be connected The interface connector is located on the electronic control board Interface Connector Location Figure 1 Oe CL Questions concerning proper connections to the unit should be dirrected to the factory Table 1 Interface Connector Definitions Factory use only Ensure there is no jumper at FP an F2 d Used with F1 to provide 24 VAC to external fan relay Ensure there is no jumper at FP an F2 Used with F2 to provide 24 VAC to external fan relay Used with D1 for desk control on or off operation Used with D2 for desk control on or off operation Common Ground Terminal Call for high fan Call for low fan C GH GL Tl m Call for heat pump reversing valve Call for compressor Call for heating EJ 24V Power from Electronic Control to Wall Remote Wall Thermostat All Friedrich Vert l Pak units are factory configured to be co
74. reeze protection feature Storing error codes can help properties determine if the unit faced obscure conditions or if an error occurred and corrected itself Multiple compressors starting at once can often cause electrical overloads and premature unit failure The random restart delay eliminates multiple units from starting at once following a power outage or initial power up The compressor delay will range from 180 to 240 seconds The new Friedrich VPAK uses a digital thermostat to accurately monitor the outdoor coil conditions to allow the heat pump to run whenever conditions are correct Running the VPAK in heat pump mode save energy and reduces operating costs The digital thermostat allows maximization of heat pump run time Heat pump models will automatically run the electric heater during compressor lock out to quickly provide heat when initially energized then return to heat pump mode This ensures that the room is heated quickly without the usual delay associated with heat pump units The room air sampling feature maintains a balanced temperature throughout the room by circulating the air for 90 seconds once every 9 minutes that the unit is not running when it is set to cooling or heating mode By circulating the air the unit can detect hot or cold areas in the room and operate the unit to cool or warm the room as necessary This function is only available when the fan mode is set to AUTO during COOL or HEAT Mode All electronic VPAK
75. results in a lowering of the indoor air temperature hence the cooling effect The expansion and absorbing of heat cause the liquid refrigerant to evaporate i e change to a gas Once the refrigerant has been evaporated changed to a gas it is heated even further by the air that continues to flow across the evaporator coil The particular system design determines at exactly what point in the evaporator the change of state i e liquid to a gas takes place In all cases however the refrigerant must be totally evaporated changed to a gas before leaving the evaporator coil The low pressure suction created by the compressor causes the refrigerant to leave the evaporator through the suction line as a cool low pressure vapor The refrigerant then returns to the compressor where the cycle is repeated Refrigeration Assembly Compressor Evaporator Coil Assembly Condenser Coil Assembly Capillary Tube Compressor Overload 23 24 SEALED REFRIGERATION SYSTEM REPAIRS IMPORTANT ANY SEALED SYSTEM REPAIRS TO COOL ONLY MODELS REQUIRE THE INSTALLATION OF A LIQUID LINE DRIER ALSO ANY SEALED SYSTEM REPAIRS TO HEAT PUMP MODELS REQUIRE THE INSTALLATION OF A SUCTION LINE DRIER EQUIPMENT REQUIRED 1 Voltmeter 2 Ammeter 3 Ohmmeter 4 E P A Approved Refrigerant Recovery System 5 Vacuum Pump capable of 200 microns or less vacuum Acetylene Welder 7 Electronic Halogen Leak Detector capa
76. rol Board Components Identification 18 Components Testing Continued 19 22 Refrigerant Sequence of Operation 23 Sealed Refrigeration System Repairs 24 Refrigerant Charging 24 Method Of Charging sss 22 23 Undercharged Refrigerant Systems 25 Overcharged Refrigerant Systems 26 Restricted Refrigerant Systems 26 Capillary Tube Systems Check Valve 27 Reversing Valve Description Operation 28 DEE 28 Checking Reversing Valves 28 Reversing Valve Touch Testing Heating Cooling Cycle 29 Procedure For Changing Reversing Valve 29 30 Compressor Checks 30 Locked Rotor Voltage 30 Single Phase Connections 30 Determine Locked Rotor Voltage 30 Locked Rotor Amperage 30 Single Phase Running amp Locked Rotor Amperage 30 Checking the Overload 30 External Overload ii 31 Compressor Single
77. s FRIEDRICH VERT I PAK A SERIES VERTICAL AIR CONDITIONERS AND HEAT PUMPS LIMITED WARRANTY FIRST YEAR Twelve 12 months from the date of installation Any part found to be defective in the material or workmanship will be repaired or replaced free of charge by our authorized service center during the normal working hours and LIMITED WARRANTY SECOND THROUGH FIFTH YEAR Sixty 60 months from the date of installation ON THE SEALED REFRIGERATION SYSTEM Any part of the sealed refrigeration system that is defective in material or workmanship will be repaired or replaced free of charge excluding freight charges by our authorized service center during normal working hours The sealed refrigeration System consists of the compressor metering device evaporator condenser reversing valve check valve and the interconnecting tubing These warranties apply only while the unit remains at the original site and only to units installed inside the continental United States Alaska Hawaii Puerto Rico Mexico and Canada The warranty applies only if the unit is installed and operated in accordance with the printed instructions and in compliance with applicable local installation and building codes and good trade practices For international warranty information contact the Friedrich Air Conditioning Company International Division Any defective part to be replaced must be made available to FRIEDRICH in exchange for the replacement part Reasonable proof mus
78. s relay Replace control board on control board Is compressor fan motor contactor Replace contactor closed Are wiring connections and capacitor good Defective t stat defective control wiring or transformer Repair or replace component Problems indicated in Blower Relay of board Compressor and outdoor fan motor should now operate Supply Circuit problems loose Is Locked Rotor See Refrigerant Replace Capacitor Connections or bad Voltage a minimum of Circuit Diagnosis Relays Board 197 Volts if unit still is not cooling properly Yes Possible motor i 1 A Replace Capacitor Are Capacitor and if prab em ie and or Start Assist so amp nuibped Start eck motor Device Assist good thoroughly Yes Allow ample time Have System for pressures to Pressures Equalized equalize No Yes Possible Compressor problem indicated Compressor should See Compressor No run Checks 37 ELECTRICAL TROUBLESHOOTING CHART HEAT PUMP HEAT PUMP MODE SYSTEM COOLS WHEN HEATING IS DESIRED Is Line Voltage Present at Solenoid Valve Is Selector Switch set for Heat Replace Solenoid Coil Is the Solenoid Coil Good YES Reversing Valve Stuck YES Replace Reversing Valve 38 TROUBLESHOOTING CHART COOLING REFRIGERANT SYSTEM DIAGNOSIS COOLING PROBLEM PROBLEM PROBLEM PROBLEM Low Load Conditions High Load Conditions Low Load Conditions High Load Conditions Indoor Coil
79. side of the system simultaneously 3 Introducing refrigerant charge into high side of the system 4 Accurately weighing the refrigerant charge actually introduced into the system Too much refrigerant overcharge in the system is just as bad if not worse than not enough refrigerant undercharge They both can be the source of certain compressor failures if they remain uncorrected for any period of time Quite often other problems such as low air flow across evaporator etc are misdiagnosed as refrigerant charge problems The refrigerant circuit diagnosis chart will assist you in properly diagnosing these systems An overcharged unit will at times return liquid refrigerant slugging back to the suction side of the compressor eventually causing a mechanical failure within the compressor This mechanical failure can manifest itself as valve failure bearing failure and or other mechanical failure The specific type of failure will be influenced by the amount of liquid being returned and the length of time the slugging continues Not enough refrigerant undercharge on the other hand will cause the temperature of the suction gas to increase to the point where it does not provide sufficient cooling for the compressor motor When this occurs the motor winding temperature will increase causing the motor to overheat and possibly cycle open the compressor overload protector Continued overheating of the motor windings and or cycling
80. speeds OML GLH MOSN3S 1109 HOOQLNO NOWWOo 2 ud J0 1 LON ue MOT JO 129 19 apow Buneay pezI5Jeu g Ol IOH LNOO OINOd19 NOV 10 Z1 Buneen 101129 M qasn LON T Builo09 104 je2 A E HUN uoJ JeAod IvArz E S SSINHYH ONIAIM IVIST QN3931 2 10009126 gt ST ae owen LO ON GN3931 AV1 d Avia AVIS Avo AN NH NVA SNOILO3NNOO LV LSOWHIHL mie ie o m vols u SANER JEE ES 8 MX OS MASE MA SC OL ADVLIOA LAS HOLIMS NOILDATAS ADVLIOA Movi8 OSN S HIV 1N IBMV HOLOW NMOHg HIMO19 Se ania TIVLIG NSLMELM6 VIA MOSS3HdWOO MAO S MAYE MASZ uS jii H3 1009 WVYOVIC ONIHIM B K HIHSVM 41 HEAT PUMP WITH ELECTRIC HEAT ELECTRICAL amp THERMOSTAT WIRING DIAGRAM VHA 09 12 18 w 4 KW or 5SKW ELECTRIC HEAT 3 5 KW ith 2 SSINHYH ONIYIM LYLSL GN39341 LOE09L 6 Sawa ON39m BuuM pig OSN S 1109 OOQNI IOH LNOO OINONLO3T3 PSPIAOJd pjer3 1v LS 1 ue speeds 1 91 MHOSN3S 100 NOV 10 Z1 o ue UBIH 10 20 MO710 Ehel
81. t be presented to establish the date of install otherwise the beginning date of this certificate will be considered to be our shipment date plus sixty days Replacement parts can be new or remanufactured Replacement parts and labor are only warranted for any unused portion of the unit s warranty We will not be responsible for and the user will pay for 1 Service calls to A Instruct on unit operation B Replace house fuses or correct house wiring C Clean or replace air filters D Remove the unit from its installed location when not accessible for service required E Correct improper installations 2 Parts or labor provided by anyone other than an authorized service center 3 Damage caused by A Accident abuse negligence misuse riot fire flood or acts of God B Operating the unit where there is a corrosive atmosphere containing chlorine fluorine or any damaging chemicals other than in a normal residential environment C Unauthorized alteration or repair of the unit which in turn affects its stability or performance D Failing to provide proper maintenance and Service E Using an incorrect power source F Faulty installation or application of the unit We shall not be liable for any incidental consequential or special damages or expenses in connection with any use or failure of this unit We have not made and do not make any representation or warranty of fitness for a particular use or purpose and there is no implied condi
82. tion of fitness for a particular use or purpose We make no expressed warranties except as stated in this certificate No one is authorized to change this certificate or to create for us any other obligation or liability in connection with this unit Any implied warranties shall last for one year after the original purchase date Some states and provinces do not allow limitations on how long an implied warranty or condition lasts so the above limitations or exclusions may not apply to you The provisions of this warranty are in addition to and not a modification of or subtraction from the statutory warranties and other rights and remedies provided by law Performance of Friedrich s Warranty obligation is limited to one of the following methods 1 Repair of the unit 2 Arefund to the customer for the prorated value of the unit based upon the remaining warranty period of the unit 3 Providing a replacement unit of equal value The method of fulfillment of the warranty obligation is at the sole discretion of Friedrich Air Conditioning In case of any questions regarding the provisions of this warranty the English version will govern 10 06 48 2011 VPAK 9K 18K BTU h Models 49 2011 VPAK 9K 18K BTU h Models 50 51 2011 VPAK 9K 18K BTU h Models 2011 VPAK 9K 18K BTU h Models 53 9K 18K BTU h Models 2011 VPAK Parts List lt o 2 Part Number Part Des
83. tor is slow to dissipate It may take any where from a few minutes to several hours for the overload to reset Checking the Overload 4 WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation Extreme care must be used if it becomes necessary to work on equipment with power applied Failure to do so could result in serious injury or death 4 WARNING BURN HAZARD Certain unit components operate at temperatures hot enough to cause burns 2 Proper safety procedures must be followed and proper protective clothing must be worn Failure to follow this warning could result in moderate to serious injury External Overload 9 12 18 Btus With power off remove the leads from compressor termi nals If the compressor is hot allow the overload to cool before starting check Using an ohmmeter test continu ity across the terminals of the external overload If you do not have continuity this indicates that the overload is open and must be replaced Internal Overload VPAK 24 Btus The overload is embedded in the motor windings to sense the winding temperature and or current draw The overload is connected in series with the common motor terminal 1 With no power to unit remove the leads from the com pressor terminals Allow motor to cool 2 Using an ohmmeter test continuity between terminals C S and C R If no continuity the compressor overload is ope
84. trol software Friedrich has accomplished what other Manufacturer s have only attempted a quiet dependable affordable and easy to use Vert l Pak Below is a list of standard features on every Friedrich VPAK and their benefit to the owner Quiet Start Stop Fan Delay Remote Thermostat Operation Internal Diagnostic Program Service Error Code Storage Random Compressor Restart Heat Pump Units Digital Defrost Thermostat Instant Heat Heat Pump Mode Room Air Sampling Feature Desk Control Ready Indoor Coil Frost Sensor Auxiliary Fan Ready The fan start and stop delays prevent abrupt changes in room acoustics due to the compressor energizing or stopping immediately Upon call for cooling or heating the unit fan will run for five seconds prior to en ergizing the compressor Also the fan off delay allows for free cooling by utilizing the already cool indoor coil to its maximum capacity by running for 30 seconds after the compressor VPAK units are controlled by a wired remote wall thermostat The new Friedrich digital VPAK features a self diagnostic program that can alert maintenance to compo nent failures or operating problems The internal diagnostic program saves properties valuable time when diagnosing running problems The self diagnosis program will also store error codes in memory if certain conditions occur and correct themselves such as extreme high or low operating conditions or activation of the room f
85. und attenuation For 9 000 12 000 18 000 Btu models it is recommended to install the door with the hinge on the right side and the return air openings high on the door For 24 000 Btu models it is recommended to install the hinge on the left side with the return air openings low on the door DIMENSIONS 58 high x 29 wide CUTOUT DIMENSIONS 55 3 4 high x 27 wide DRAIN PAN Drain pan may be installed prior to chassis for easy installation removal For VPAK 24K only g FRIEDRICH Friedrich Air Conditioning Companv 10001 Reunion Place Suite 500 San Antonio Tx 78216 1 800 541 6645 www friedrich com VERT I PAK A SERIES SINGLE PACKAGE VERTICAL AIR CONDITIONERS LIMITED WARRANTY SAVE THIS CERTIFICATE It gives you specific rights you may also have other rights which may vary from state to state and province to province In the event that your unit needs servicing contact your nearest authorized service center If you do not know the nearest service center ask the company that installed your unit or contact us see address and telephone number above To obtain service and or warranty parts replacement you must notify an authorized FRIEDRICH Air Conditioning Co service center distributor dealer or contractor of any defect within the applicable warranty period When requesting service please have the model and serial number from your unit readily available Unless specified otherwise herein the following applie
86. units have low voltage terminals ready to connect a desk control energy management System Controlling the unit s on off operation from a remote location like the front desk can reduce energy usage and requires no additional accessories at the VPAK The frost sensor protects the compressor from damage in the event that airfl ow is reduced or low outdoor temperatures cause the indoor coil to freeze When the indoor coil reaches 309F the compressor is diabled and the fan continues to operate based on demand Once the coil temperature returns to 45 F the compressor returns to operation The VPAK features a 24V AC terminal for connection to a relay that may be used to operate an auxiliary fan to transfer air to adjoining rooms Auxiliary fans can provide air conditioning to odd shaped rooms 10 ELECTRONIC CONTROL SEQUENCE OF OPERATION Note Unit is operated by a wired remote wall t stat which is connected to an electronic control board at the VPAK unit Compressor and Reversing Valve Control Active Mode Compressor Reversing Valve State Cooling On De Energized Heat Heat Pump Compressor Heat On Energized Heat Pump Electric Heat Off Energized Heat Electric Heat Cool Units Off De Energized Fan Only Off The Reversing valve stays in the last state until a call for heat or cooling Cooling Mode Once the ambient temperature rises past the cool demand set point of the t stat and if the compressor is not
87. when working with a torch 2w a pene Failure to follow these procedures could result in moderate or serious injury METERING DEVICE Capillary Tube Systems All units are equipped with capillary tube metering devices Checking for restricted capillary tubes 1 Connect pressure gauges to unit 2 Start the unit in the cooling mode If after a few minutes of operation the pressures are normal the check valve and the cooling capillary are not restricted CHECK VALVE A unique two way check valve is used on the reverse cycle heat pumps It is pressure operated and used to direct the flow of refrigerant through a single filter drier and to the proper capillary tube during either the heating or cooling cycle One way Check Valve Heat Pump Models X 1 e X NOTE The slide check inside the valve is made of teflon Should it become necessary to replace the check valve place a wet cloth around the valve to prevent overheating during the brazing operation CHECK VALVE OPERATION In the cooling mode of operation high pressure liquid enters the check valve forcing the slide to close the opposite port liquid line to the indoor coil Refer to refrigerant flow chart This directs the refrigerant through the filter drier and cooling capillary tube to the indoor coil In the heating mode of operation high pressure refrigerant enters the check valve from the opposite direction closing A WARNING CUT SEVER HAZARD B
88. will close gradually as the temperature rises above 40 F to fully close at 60 F Bellows Assembly Drain Pan Valve If outdoor temperature is at 40 F and drain valve does not open replace it Ensure it is not restricted by debris External Static Pressure External Static Pressure can best be defined as the pressure difference drop between the Positive Pressure discharge and the Negative Pressure intake sides of the blower External Static Pressure is developed by the blower as a result of resistance to airflow Friction in the air distribution system EXTERNAL to the VERT I PAK cabinet Resistance applied externally to the VERT I PAK i e duct work filters etc on either the supply or return side of the system causes an INCREASE in External Static Pres sure accompanied by a REDUCTION in airflow External Static Pressure is affected by two 2 factors 1 Resistance to Airflow as already explained 2 Blower Speed Changing to a higher or lower blower speed will raise or lower the External Static Pressure accordingly These affects must be understood and taken into consideration when checking External Static Pressure Airflow to insure that the system is operating within design conditions Operating a system with insufficient or excessive airflow can cause a variety of different operating problems Among these are reduced capacity freezing evaporator coils premature compressor and or heating component failures
89. y careful when using an oxy acetylene torch Direct contact with the torch s flame or hot surfaces can cause serious burns Make sure to protect personal and surrounding property with fire proof materials Have a fire extinguisher at hand while using a torch Provide adequate ventilation to vent off toxic fumes and work with a qualified assistant whenever possible Always use a pressure regulator when using dry nitrogen to test the sealed refrigeration system for leaks flushing etc Make sure to follow all safety precautions and to use proper protective safety aids such as gloves safety glasses clothing etc Failure to follow proper safety procedures and or these warnings can result in serious injury or death MECHANICAL HAZARDS Extreme care proper judgment and all safety procedures must be followed when testing troubleshooting handling or working around unit with moving and or rotating parts Be careful when handling and working around exposed edges and corners of sleeve chassis and other unit components especially the sharp fins of the indoor and outdoor coils Use proper and adequate protective aids such as gloves clothing safety glasses etc Failure to follow proper safety procedures and or these warnings can result in serious injury or death PROPERTY DAMAGE HAZARDS FIRE DAMAGE HAZARDS Read the Installation Operation Manual for this air conditioning unit prior to operating Use air conditioner on a single dedi
90. y weighing in the proper amount and type of refrigerant as shown on rating plate Crimp the process tubes and solder the ends shut Do not leave Schrader or piercing valves in the sealed system NOTE When brazing a reversing valve into the system it is of extreme importance that the temperature of the valve does not exceed 250 F at any time Wrap the reversing valve with a large rag saturated with water Re wet the rag and thoroughly cool the valve after each brazing operation of the four joints involved The wet rag around the reversing valve will eliminate conduction of heat to the valve body when brazing the line connection COMPRESSOR CHECKS 4 WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation Extreme care must be used if it becomes necessary to work on equipment with power applied Failure to do so could result in serious injury or death Locked Rotor Voltage L R V Test Locked rotor voltage L R V is the actual voltage available at the compressor under a stalled condition Single Phase Connections Disconnect power from unit Using a voltmeter attach one lead of the meter to the run R terminal on the compressor and the other lead to the common C terminal of the com pressor Restore power to unit Determine L R V Start the compressor with the volt meter attached then stop the unit Attempt to restart the compressor within a couple of seconds and immediat

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