SERVICE MANUAL for MODEL AirV Rooftop Air Conditioning Systems

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SECTION 4WIRING SCHEMATICS4.1 INTRODUCTIONThis Section contains wiring schematics for the AirV units.Figure 4--1 is the schematic for the standard upper unit assembly and it is applicable to all standard units.Figure 4--2 is the schematic for the Low Profile upper unit assembly.Figure 4--3 is the schematic for a free blow ceiling unit without heat while Figure 4--4 is a free blow unit with heat.Figure 4--5 is for a ducted unit with microprocessor control.Figure 4--6 is for an Upper Unit Heat Pump with free blow application and Figure 4--7 is the matching free blow ceilingunit.Figure 4--8 is for the Upper Unit Heat Pump ducted application and Figure 4--10 is the matching ducted ceiling unit.Note that the ducted units have 115 VAC power for the components and 12 VDC power for the microprocessor controlsystem.Figure 4--9 is the schematic for a Low Profile upper unit for ducted application.Figure 4--11 is for the ducted or free blow application that uses a wall--mounted thermostat, with or without the furnaceoption and Figure 4--12 is wall--mounted thermostat, free blow ceiling unit with heating assembly.Where applicable, diagrams that designate 115 Volt, 60 H, 1 Phase, are also available using 220 Volts, 50 H, 1 Phase.Most notably Figure 4--1 and Figure 4--5.PLUG CONNECTSTO CEILING UNITSEE FIG> 4 -3OR 4 -44P1BLK1BLU2 2342P12GRN/YELCONTROLBOXYELGRN/YEL2PEVAP.BLKBLUWHT1 2FAN MOTORWHTYELCGRN/YELWHTBRNRED REDBLUOVERLOAD PROTECTORS(If Used)COMPRESSORFigure 4 -1 Upper Unit Schematic - Standard & HCRCPTCFHBLUCAPACITOR(UNIT - 99 -00468 -10)PLUG CONNECTS TO CEILING UNIT.SEE DIAGRAM SUPPLIED WITHCEILING UNIT FOR ADDITIONALWIRING.4P12342P12LEGENDGRN/YELBLKBLUWHTWHTYELOLP: OVERLOAD PROTECTIONPTC: START THERMISTERJTB: JOINT TERMINAL BLOCKFMC: INDOOR FAN MOTOR CAPACITORFMCYELWHTBRNYEL12341234P12343P123BRNOLP(IF USED)1 2(3)YELCYELWHTBRNWHTBLKBLUWHTBRNRSCOMPRESSORFigure 4 -2 Upper Unit Schematic - Low ProfileWHTREDBLUINDOOR FAN MOTOROUTDOOR FAN MOTORCREDFHPTC(IF USED)BLUGRN/YELCAPACITOR10/094--1T--298
{115 VACSUPPLYWIRE“HOT”“NEUTRAL”BLK421 68SWGRN/YELORNYELWHTBLKASW2 1C LITBLUORN1 22PORN WHTASMYEL4P12WHT34GRN/YEL2P12PLUG CONNECTS TO UPPER UNIT.SEE DIAGRAM SUPPLIED WITHUPPER UNIT FOR ADDITIONAL WIRING.SWITCHPOSITIONHIGH FANLOW FANOFFLOW COOLHIGH COOLASWO (OFF)I(ON)LEGENDCONTACTS MADE1--4 . 1--61--2 . 1--6NONE1--2 . 1--6 . 1--81--4 . 1--6 . 1--822--1ASM : AIR SWEEP MOTORASW : AIR SWEEP SWITCHSW : SWITCHIT : INDOOR THERMOSTATFigure 4 -3 Ceiling Unit Schematic - Cooling Only{115 VACSUPPLYWIREBLK“HOT”“NEUTRAL”-- -- -- -- --BLKSWHLL1AB3HTL2 CWHTGRN/YELYEL11REDBLUORNIT23BLK2WHT 12PCECBLKBLUORN2 1ASWHEATER -ASSYHEATERBLKBTWHTYEL2PORN WHTGRN/YEL4P12WHT1 234ASM2PWHT12PLUG CONNECTS TO UPPER UNIT.SEE DIAGRAM SUPPLIED WITHUPPER UNIT FOR ADDITIONALWIRING.SWITCHPOSITIONOFFLOW FANHIGH FANLOW COOLHIGH COOLHEATASWO (OFF)1(ON)LEGENDCONTACTS MADENONEL1--L . L1--AL1--H . L1--AL2--C . L1--L . L1--A . B--3L2--C . L1--H . L1--A . B--3L2--HT.L1--L.L1--A.B--122--1ASM AIR SWEEP MOTORASW AIR SWEEP SWITCHSW SWITCHIT INDOOR THERMOSTATCEC CLOSED END CONNECTORBT BIMETALFigure 4 -4 Ceiling Unit Schematic - Heat/CoolLEGENDIDC Th : INDOoR COIL THERMISTERRA Th : ROOM AIR THERMISTERKY : RELAYDI:DIODE1 2 3 4BLUBLK WHTGRN/YEL2BLK1WHTRA ThIDC ThCN1BLK1234BRNCONTROLPCBASS’YCN4CN41 1 12 2 23 3 34 4 45 5 56 6 67 7 78 8 8RY33 2 1 CN3YRY2RY1LN2N1WHTBLK HOT”115 VAC POWER“NEUTRAL”GRN/YEL1 1 12 2 23 3 3FUSE D1RY4 250V 3.15A21CN1REDBLK(+)(--)12 VDC POWERCN9 1 2 3 4 5 6 7 8CN21 2CN9 1 2 3 4 5 6 7 8DISPLAY PCB ASBLUBLUFigure 4 -5 Ceiling Unit, Standard - DuctedT--298 4--2 10/09
Page 1 and 2:
RTransport Air Conditioning2P12BLKB
Page 3 and 4: SAFETY SUMMARYGENERAL SAFETY NOTICE
Page 5 and 6: CAUTIONDo not use carbon tetrachlor
Page 7 and 8: TABLE OF CONTENTS - Continued:SERVI
Page 9 and 10: LIST OF FIGURES - Continued:Figure
Page 11 and 12: SECTION 1DESCRIPTION1.1 INTRODUCTIO
Page 13 and 14: TABLE 1 -2 MODEL CHARTCEILING UNITM
Page 15 and 16: 123451.2.CoverCondenser3. Evaporato
Page 17 and 18: 12395647810111.2.Cover AssemblyScro
Page 19 and 20: 1.4 SYSTEM (UNIT) INSTALLED DIMENSI
Page 21 and 22: 3.6”14” Opening24.1”1.65” 1
Page 23 and 24: 12354SCHEMATIC VIEW15SUPPLY AIR123S
Page 25 and 26: 1.6 AirV SYSTEM COMPONENT SPECIFI-C
Page 27 and 28: passes into the accumulator. The ac
Page 29 and 30: SECTION 2TROUBLESHOOTINGFor ducted
Page 31 and 32: SYSTEM AND PROBABLE CAUSEPROBABLE R
Page 33 and 34: SECTION 3SERVICE AND MAINTENANCE3.1
Page 35 and 36: 3.4.6 Indoor Thermostat RemovalTo r
Page 37 and 38: 115V AC12V DCPCB DisplayHolding Cli
Page 39 and 40: 3.5.9 Heat Pump ThermistorsOn the H
Page 41 and 42: c. Gently pry 4 snap clips open and
Page 43 and 44: 3.6.9 Capacitor Testing and Replace
Page 45 and 46: Evaporator CoilRetainingRingFigure
Page 47 and 48: NOTEWhen reassembling the blower wh
Page 49 and 50: 3.8 THERMOSTAT INSTALLATION AND STA
Page 51 and 52: 3.12.2 Timeguard TimerA 3--minute t
Page 53: UPPER UNITFactory WiringField Wirin
Page 57 and 58: PLUG CONNECTS TO CEILING UNIT.SEE D
Page 59 and 60: “HOT”“NEUTRAL””GROUND”F
Page 61 and 62: TTHERMOSTAT INSTALLATION AND START-
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SERVICE MANUAL for MODEL AirV Rooftop Air Conditioning Systems

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