Daikin Maverick I Installation And Maintenance Manual Download Page 2

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IM 972-2 • MAVERICK I ROOFTOP SYSTEMS 2

www.DaikinApplied.com

Table of Contents

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Hazardous Information Messages . . . . . . . . . . . . . . . 3
Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Mechanical Installation . . . . . . . . . . . . . . . . . . . . . . . . 4

Outside Slab Installation . . . . . . . . . . . . . . . . . . . . . 5

Downflow to Horizontal

. . . . . . . . . . . . . . . . . . . . . . 6

Attaching Exhaust and Combustion Air

Inlet Hoods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Rooftop Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Ducting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Return Air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Gas Supply, Condensate Drain  . . . . . . . . . . . . . . . . 9
Dual Voltage Inducer 208 – 230 Volt Models   . . . . 10
LP Conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Condensate Drain  . . . . . . . . . . . . . . . . . . . . . . . . . 13

Electrical Installation . . . . . . . . . . . . . . . . . . . . . . . . . 14

Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Hook-Up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Internal Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
208 Volt Applications . . . . . . . . . . . . . . . . . . . . . . . 15
Customer Supplied Thermostat . . . . . . . . . . . . . . 16
Optional Factory Supplied Thermostat. . . . . . . . . . 16

Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Unit Capacity and Physical Data. . . . . . . . . . . . . . . . 22

Compressor and Condenser Motor . . . . . . . . . . . . 23
MCA and MCOP . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Auxiliary Heater Kit Performance. . . . . . . . . . . . . . 24

Dimensional Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Unit Dimensions MPS 015B – 025B . . . . . . . . . . . . 27

Horizontal Duct Dimensions . . . . . . . . . . . . . . . . . 29
Curb Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . 29

Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Economizers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Horizontal Duct Installation . . . . . . . . . . . . . . . . . . 34

Fresh Air Dampers and Power Exhaust  . . . . . . . . . . 35
Motorized Damper Kit . . . . . . . . . . . . . . . . . . . . . . . . 36
Outdoor Air Hood  . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Roofcurbs  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Controls and Operation . . . . . . . . . . . . . . . . . . . . . . . 38

Furnace Section Controls and Ignition System . . . . . 38

Normal Furnace Operating Sequence . . . . . . . . . . 38

Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . 40

Burners  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Manual Reset Over-Temperature Control  . . . . . . . 40
Pressure Switch   . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Limit Control   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Cooling Section Operation . . . . . . . . . . . . . . . . . . . . 41

Cooling Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Continuous Fan Mode . . . . . . . . . . . . . . . . . . . . . . 41

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

General Maintenance . . . . . . . . . . . . . . . . . . . . . . . . 42

Advise the Customer . . . . . . . . . . . . . . . . . . . . . . . 42

Unit Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Furnace Section. . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Cooling Section . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

System Charge Charts . . . . . . . . . . . . . . . . . . . . . . . 44

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Troubleshooting Charts. . . . . . . . . . . . . . . . . . . . . . . 47

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Summary of Contents for Maverick I

Page 1: ...on and Maintenance IM 972 2 Group Applied Air Handling Part Number IM 972 Date November 2018 Maverick I Commercial Packaged Rooftop Systems Heating Cooling Models MPS015B MPS025B 15 to 25 Tons R 410A Refrigerant ...

Page 2: ...Factory Supplied Thermostat 16 Wiring Diagrams 17 Physical Data 22 Unit Capacity and Physical Data 22 Compressor and Condenser Motor 23 MCA and MCOP 23 Auxiliary Heater Kit Performance 24 Dimensional Data 27 Unit Dimensions MPS 015B 025B 27 Horizontal Duct Dimensions 29 Curb Dimensions 29 Performance Data 30 Accessories 33 Economizers 33 Horizontal Duct Installation 34 Fresh Air Dampers and Power ...

Page 3: ...rized components accessories or devices may adversely affect the operation of the air conditioner and may also endanger life and property The manufacturer disclaims any responsibility for such loss or injury resulting from the use of such unauthorized components accessories or devices WARNING Install this unit only in a location and position as specified in the Mechanical Installation section of t...

Page 4: ...dditional helpful publications available from the National Fire Protection Association are NFPA 90A Installation of Air Conditioning and Ventilating Systems 1985 or latest edition NFPA 90B Warm Air Heating and Air Conditioning Systems 1984 These publications are available from National Fire Protection Association Inc Batterymarch Park Quincy MA 02269 Pre Installation Check Points WARNING This unit...

Page 5: ...ction is frequent cleaning maintenance and minimal exposure to contaminants Clearances The minimum clearances shown in Figure 3 on page 6 must be observed for proper unit performance and serviceability Horizontal Conversion Procedure Outside Slab Installation NOTICE These units are designed certified for outdoor installation only Installation inside any part of a structure can result in inadequate...

Page 6: ...hood ships in a carton in the blower compartment inside the unit and must be attached when the unit is installed To attach exhaust combustion air inlet hood 1 Remove screws securing blower access panel and remove access panel For location of blower access panel 2 Remove exhaust combustion air inlet hood from the carton located inside the blower compartment 3 Attach blower access panel 4 Attach the...

Page 7: ... condensation 1 Before locating the unit on the roof make sure that the roof structure is adequate to support the weight involved See Wiring Diagrams Physical Data in this manual THIS IS VERY IMPORTANT AND THE INSTALLER S RESPONSIBILITY 2 Remove shipping boards 3 For rigging and roof curb details see Figure 5 and Figure 6 4 The location of the unit on the roof should be such as to provide proper a...

Page 8: ...SYSTEMS 8 www DaikinApplied com Mechanical Installation Figure 6 Roof Curb UNIT ROOFCURB INSTALL GASKET RETURN DUCT 50 3 4 X 22 1289 x 559 mm MAX SUPPLY DUCT 42 X 23 3 4 1089 X 603 mm MAX CAULK ALL JOINTS WATERTIGHT NAILING STRIP ...

Page 9: ...e furnace with sheet metal screws and joints must be taped All other duct joints must be secured with approved connections and sealed airtight Failure to prevent products of combustion from being circulated into the living space can create potentially hazardous conditions including carbon monoxide poisoning that could result in personal injury or death Gas Supply Condensate Drain Gas Connection IM...

Page 10: ...on the furnace rating plate The heating value of the gas BTU Ft3 may be determined by consulting the local natural gas utility or the LP gas supplier Table 1 Gas Pipe Capacity Table Cu Ft Hr Nominal Iron Pipe Size Equivalent Length of Pipe Feet 10 20 30 40 50 60 70 80 1 2 132 92 73 63 56 50 46 43 3 4 278 190 152 130 115 105 96 90 1 520 350 285 245 215 195 180 170 1 1 4 1 050 730 590 500 440 400 37...

Page 11: ...essure regulator remove the regulator vent cover and turn the adjustment screw clockwise to increase pressure or counterclockwise to decrease pressure Figure 11 Then replace the regulator vent cover securely Any necessary major changes in the gas flow rate should be made by changing the size of the burner orifices To change orifice spuds shut off the manual main gas valve and remove the gas manifo...

Page 12: ...nstallation Figure 10 Heat Exchanger Component Identification Figure 11 Honeywell VR8305Q4120 Two Stage Gas Valve OUTLET PRESSURE TAP 1 8 NPT 2 STAGE OPERATOR INLET PRESSURE TAP 1 8 NPT GROUND TERMINAL LOW STAGE ADJUSTMENT UNDER VENT CAP HIGH STAGE ADJUSTMENT UNDER VENT CAP ...

Page 13: ...5 100 000 One 0 33 0 36 0 38 0 40 1 30 Ten 5 24 6 0 6 15 6 36 15 0 Table 3 LP Gas Pipe Capacity Cubic feet per hour Nominal Iron Pipe Size Inches Length of Pipe Feet 10 20 30 40 50 60 70 80 90 100 1 2 275 189 152 129 114 103 96 89 83 78 3 4 567 393 315 267 237 217 196 182 173 162 1 1 071 732 590 504 448 409 378 346 322 307 1 1 4 2 205 1 496 1 212 1039 913 834 771 724 677 630 1 1 2 3 307 2 299 1 85...

Page 14: ...t ampacity found on the unit rating plate Use the smallest wire size allowable from the unit disconnect to the unit Wire size based on 75 C rated wire insulation for 1 voltage drop 4 For more than 3 conductors in a raceway or cable see the N E C C E C in Canada for derating the ampacity of each conductor 5 For through the base wiring entry reference Figure 15 All fittings and conduit are field sup...

Page 15: ... 64 1 23 32 1 23 32 1 31 32 1 31 32 2 15 32 2 15 32 Hook Up To wire unit refer to Figure 23 on page 27 for location of wiring entrances Wiring to be done in the field between the unit and devices not attached to the unit or between separate devices which are field installed and located shall conform with the temperature limitation for Type T wire 63 F rise 35 C when installed in accordance with th...

Page 16: ...T USE CONTROL WIRING SMALLER THAN NO 18 AWG Optional Factory Supplied Thermostat The optional factory supplied T 170 commercial setback digital thermostat Figure 16 uses microcomputer technology to provide precise time and temperature control This thermostat offers the flexibility to design heating and cooling programs that fit building needs refer to Table 7 Figure 18 for an optional factory supp...

Page 17: ...tallation www DaikinApplied com 17 IM 972 2 MAVERICK I ROOFTOP SYSTEMS Wiring Diagrams Figure 17 Typical Customer Supplied Thermostat Wiring Diagram Figure 18 Optional Factory Supplied T 170 Thermostat Wiring Diagram ...

Page 18: ...IM 972 2 MAVERICK I ROOFTOP SYSTEMS 18 www DaikinApplied com Electrical Installation Figure 19 Wiring Diagram MPS 015B 025B 208 230 460 V Gas Heat ...

Page 19: ...Electrical Installation www DaikinApplied com 19 IM 972 2 MAVERICK I ROOFTOP SYSTEMS Figure 20 Wiring Diagram MPS 015B 025B 208 230 460 V Cooling Only ...

Page 20: ...IM 972 2 MAVERICK I ROOFTOP SYSTEMS 20 www DaikinApplied com Electrical Installation Figure 21 Wiring Diagram MPS 015B 025B 575V Gas Heat ...

Page 21: ...Electrical Installation www DaikinApplied com 21 IM 972 2 MAVERICK I ROOFTOP SYSTEMS Figure 22 Wiring Diagram MPS 015B 025B 575V Cooling Only ...

Page 22: ...5 4 1 25 4 Condenser Fan Type Propeller Propeller Propeller No used diameter in mm 4 24 609 6 6 24 609 6 6 24 609 6 Drive type No of speeds Direct 1 Direct 1 Direct 1 CFM L s 16000 7550 19800 9344 19800 9344 Motor hp 4 at 1 3 HP 6 at 1 3 HP 6 at 1 3 HP Motor rpm 1075 1075 1075 Indoor Fan Type FC Centrifugal FC Centrifugal FC Centrifugal No used diameter in mm 2 18 9 457 229 2 18 9 457 229 2 18 9 4...

Page 23: ...p 2 12 2 14 7 18 6 Amps LRA Comp 2 100 95 125 Condenser Motor Number 4 6 Phase 1 HP 1 3 Amps FLA each 0 7 Amps LRA each 2 4 NOTE Unit operating voltage range is 414 506 Table 11 Compressor and Condenser Motor Data 575 Volt Data Electrical Data 575 V MPS 015B MPS 020B MPS 025B Compressor Motor Number 2 Phase 3 RPM 3450 HP Compressor 1 7 1 2 10 11 1 2 Amps RLA Comp 1 9 0 12 8 14 7 Amps LRA Comp 1 78...

Page 24: ...138 3 169 192 175 200 CE75C 54 71 9 149 8 172 8 206 235 225 250 020 Low Static Drive NONE 101 101 125 125 CE20C 14 4 19 2 40 0 46 2 101 101 125 125 CE40C 28 8 38 3 79 9 92 2 119 134 125 150 CE60C 43 2 57 5 119 9 138 3 169 192 175 200 CE75C 54 71 9 149 8 172 8 206 235 225 250 020 High Static Drive NONE 109 109 125 125 CE20C 14 4 19 2 40 0 46 2 109 109 125 125 CE40C 28 8 38 3 79 9 92 2 129 145 150 1...

Page 25: ...6 6 114 125 015 High Static Drive NONE 40 50 CE20D 19 2 23 1 40 50 CE40D 38 4 46 2 67 70 CE60D 57 6 69 3 95 100 CE75D 72 86 6 117 125 020 Low Static Drive NONE 52 60 CE20D 19 2 23 1 52 60 CE40D 38 4 46 2 67 70 CE60D 57 6 69 3 95 100 CE75D 72 86 6 117 125 020 High Static Drive NONE 56 70 CE20D 19 2 23 1 56 70 CE40D 38 4 46 2 70 70 CE60D 57 6 69 3 99 100 CE75D 72 86 6 121 125 025 Low Static Drive NO...

Page 26: ...E75Y 72 69 3 92 100 015 High Static Drive NONE 30 35 CE20Y 19 2 18 5 30 35 CE40Y 38 4 37 53 60 CE60Y 57 6 55 4 76 80 CE75Y 72 69 3 94 100 020 Low Static Drive NONE 40 50 CE20Y 19 2 18 5 40 50 CE40Y 38 4 37 53 60 CE60Y 57 6 55 4 76 80 CE75Y 72 69 3 94 100 020 High Static Drive NONE 42 50 CE20Y 19 2 18 5 42 50 CE40Y 38 4 37 56 60 CE60Y 57 6 55 4 80 80 CE75Y 72 69 3 97 100 025 Low Static Drive NONE 4...

Page 27: ...025B Figure 23 MPS 015B 025B Dimensions Cooling Only DISCONNECT OUTLET POWER LOW VOLTAGE OPTIONAL HORIZONTAL SUPPLY CONNECTION OPTIONAL HORIZONTAL RETURN CONNECTION 3863 mm 152 KNOCKOUT LOCATIONS OPTIONAL OUTDOOR HOOD LOCATION SUPPLY CONTROL PANEL FILTER ACCESS DOOR CONDENSATE DRAIN 1 25 4 mm FNPT FAN ACCESS DOOR RETURN ...

Page 28: ...5B 025B Dimensions Gas Heat DISCONNECT OUTLET POWER LOW VOLTAGE OPTIONAL HORIZONTAL SUPPLY CONNECTION OPTIONAL HORIZONTAL RETURN CONNECTION RETURN 3863 mm 152 KNOCKOUT LOCATIONS SUPPLY CONTROL PANEL FILTER ACCESS DOOR CONDENSATE DRAIN 1 25 4 mm FNPT OPTIONAL OUTDOOR HOOD LOCATION FAN ACCESS DOOR ...

Page 29: ... www DaikinApplied com 29 IM 972 2 MAVERICK I ROOFTOP SYSTEMS Horizontal Duct Dimensions Figure 25 MPS 015B 025B Horizontal Duct Dimensions Curb Dimensions Figure 26 MPS 015B 025 Curb Dimensions SUPPLY DUCT RETURN DUCT ...

Page 30: ...92 2500 714 2629 735 2756 756 2882 776 2984 796 3121 815 3262 834 3405 853 3552 871 3702 888 3856 905 4013 922 4173 7000 3303 584 1930 609 2072 633 2211 656 2349 679 2484 701 2617 723 2748 744 2877 764 3003 785 3124 804 3265 823 3410 842 3559 860 3710 878 3865 895 4024 912 4185 929 4350 7200 3398 570 1897 595 2042 619 2185 643 2327 666 2466 689 2602 711 2737 732 2870 753 3000 773 3127 793 3270 812...

Page 31: ...1 5087 917 5260 933 5434 946 5645 962 5826 978 6013 993 6208 1009 6408 9000 4247 697 3361 719 3540 741 3721 763 3904 785 4089 805 4276 824 4449 842 4622 860 4796 877 4971 894 5146 911 5322 927 5498 939 5712 955 5892 971 6079 986 6272 1002 6472 9200 4341 711 3567 733 3752 755 3939 777 4129 798 4327 817 4502 835 4678 853 4854 871 5031 888 5209 905 5387 921 5565 933 5784 949 5963 964 6149 980 6342 99...

Page 32: ...4 889 6210 906 6441 922 6675 949 6961 964 7176 979 7393 993 7610 1008 7828 1023 8047 1038 8267 1053 8488 1068 8710 10800 5096 850 5845 868 6071 885 6301 902 6534 918 6772 946 7074 961 7294 975 7514 990 7736 1005 7959 1020 8182 1035 8407 1050 8632 1065 8858 11000 5191 864 6160 882 6393 899 6630 915 6871 943 7191 958 7415 972 7640 987 7867 1002 8094 1017 8321 1032 8550 1046 8780 1061 9011 11200 5285...

Page 33: ...field accessory Gear driven direct drive actuator Fully modulating 0 100 Low leakage dampers Slip in design for easy installation Plug in polarized electrical connections Pre configured no field adjustments necessary Standard barometric relief damper Single enthalpy with dual enthalpy upgrade kit available CO2 input sensor available Field assembled hood ships with economizer Economizer ships compl...

Page 34: ...accessory Gear driven direct drive actuator Fully modulating 0 100 Low leakage dampers Slip in design for easy installation Plug in polarized 12 pin electrical connections Pre configured no field adjustments necessary Standard barometric relief damper Single enthalpy with dual enthalpy upgrade kit available CO2 input sensor available Field assembled hood ships with economizer Economizer ships comp...

Page 35: ...on RXRX CFF02C Power exhaust 208 230 volt for MPS 006B through 025B RXRX CFF02D Power exhaust 460 volt for MPS 006B through 025B RXRX CFF02Y Power exhaust 575 volt for MPS 006B through 025B For economizer controller Requires separate power supply with disconnect Adjustable switch on economizer factory preset to energize power exhaust at 95 outside air position Polarized plug connects power exhaust...

Page 36: ... Damper Kit for 15 25 Ton 52 8 87 9 Kw Units RXRX AWO3 Motor Kit for MXRF HEA1 Figure 33 Damper Kit MPS 015B 025B NOTE Outdoor air hood must also be ordered with this kit Outdoor Air Hood MXRF KFA1 Manual RXRS ATO1 Motorized Damper Kit for Manual Fresh Air Damper Figure 34 Outdoor Air Hood MPS 015B 025B ...

Page 37: ...Number Description RXKG CBH14 MPS 015B through 025B One available height 14 356 mm for all models Quick assembly corners for easy installation 1 25 mm 4 102 mm nailer provided Insulating panels not required because of insulated outdoor base pan Sealing gasket 28 711 mm provided with roofcurb 18 gauge galvanized steel Figure 35 Typical Roofcurb Installation MPS 015B 020B UNIT ...

Page 38: ...tarts a 30 second prepurge and energizes W2 If any pressure switch is still open the inducers will continue to be energized until closure 7 After prepurge timeout control energizes W1 and continues to energize W2 initiates spark for two seconds minimum seven second maximum ignition trial and initiates a 120 second second stage high fire warm up timing 8 Control detects flame de energizes spark and...

Page 39: ... a 45 second indoor blower delay on timing 9 After a fixed 45 seconds indoor blower delay on the control energizes the indoor blower 10 After a fixed 120 seconds second stage warm up period control checks the thermostat input If W1 and W2 are present control enters normal operating loop where all inputs are continuously checked First Stage and Second Stage Removed Simultaneously 1 Upon a loss of W...

Page 40: ...eans for throttling the burner input rate 8 Replace the control door 9 Turn ON all electric power to the unit 10 Set the thermostat to the desired setting 11 If the unit will not operate follow the instructions below on how to shut down the furnace The initial start up on a new installation may require the control system to be energized for some time until air has bled through the system and fuel ...

Page 41: ...ge cooling is established the control energizes Y2 and energizes the second stage compressor 2 Control enters normal operating loop where all inputs are continuously checked Second stage satisfied first stage still called for starting from B2 1 Y2 is de energized and second stage compressor is deenergized First stage and second stage called simultaneously 1 Zone thermostat contacts close a call fo...

Page 42: ...res should be followed by a qualified installer service agency or gas supplier 1 Turn OFF the electrical power to the unit and set the thermostat to the lowest temperature 2 Shut OFF the gas supply to the unit either at the meter or at manual valve in the supply piping 3 Remove the furnace controls access panel and the control box cover 4 Disconnect the gas supply piping from the gas valve 5 Disco...

Page 43: ...when it is dry If the coil is coated with dirt or lint vacuum it with a soft brush attachment Be careful not to bend the coil fins 2 If the coil is coated with oil or grease clean it with a mild detergent and water solution Rinse the coil thoroughly with water IMPORTANT Do not use excessive water pressure Excessive water pressure can bend the fins and tubing of the coil and lead to inadequate unit...

Page 44: ...IRCUIT 2 BOTH COMPRESSORS MUST BE OPERATING BEFORE CHECKING REFRIGERANT CHARGE BEFORE FINAL REFRIGERANT CHECK RETURN AIR TEMPERATURE MUST BE WITHIN COMFORT CONDITIONS MEASURE PRESSURE AT COMPRESSOR SUCTION AND DISCHARGE MEASURE OUTDOOR AMBIENT TO UNIT PLACE X ON CHART WHERE SUCTION AND DISCHARGE INTERSECT IF X IS BELOW OUTDOOR AMBIENT LINE ADD CHARGE AND REPEAT STEPS 1 3 IF X IS ABOVE OUTDOOR AMBI...

Page 45: ...CUIT 2 BOTH COMPRESSORS MUST BE OPERATING BEFORE CHECKING REFRIGERANT CHARGE BEFORE FINAL REFRIGERANT CHECK RETURN AIR TEMPERATURE MUST BE WITHIN COMFORT CONDITIONS MEASURE PRESSURE AT COMPRESSOR SUCTION AND DISCHARGE MEASURE OUTDOOR AMBIENT TO UNIT PLACE X ON CHART WHERE SUCTION AND DISCHARGE INTERSECT IF X IS BELOW OUTDOOR AMBIENT LINE ADD CHARGE AND REPEAT STEPS 1 3 IF X IS ABOVE OUTDOOR AMBIEN...

Page 46: ...CUIT 2 BOTH COMPRESSORS MUST BE OPERATING BEFORE CHECKING REFRIGERANT CHARGE BEFORE FINAL REFRIGERANT CHECK RETURN AIR TEMPERATURE MUST BE WITHIN COMFORT CONDITIONS MEASURE PRESSURE AT COMPRESSOR SUCTION AND DISCHARGE MEASURE OUTDOOR AMBIENT TO UNIT PLACE X ON CHART WHERE SUCTION AND DISCHARGE INTERSECT IF X IS BELOW OUTDOOR AMBIENT LINE ADD CHARGE AND REPEAT STEPS 1 3 IF X IS ABOVE OUTDOOR AMBIEN...

Page 47: ...panel Air non condensable or moisture in system Recover refrigerant evacuate recharge add filter drier Incorrect voltage At compressor terminals voltage must be within 10 of rating plate volts when unit is operating Compressor short cycles Incorrect voltage At compressor terminals voltage must be 10 of nameplate marking when unit is operating Defective overload protector Replace check for correct ...

Page 48: ...OR OPEN ROLL OUT CONTROLS CHECK FOR OPEN LIMIT CHECK IGNITION CONTROL CHASSIS GROUND WIRE CHECK WIRING CHECK INLET GAS PRESSURE CHECK 24 VOLTSTO GAS VALVE CHECK FOR GAS FLOWTO AND FROM VALVE CHECK BURNER CARRYOVER NOTE THE SYSTEM WILL ATTEMPTTO LIGHT 4TIMES WITH A 60 SECOND INTER PURGE BETWEENTRIES IF AFTERTHETHIRDTIMETHE BURNERS DO NOT LIGHT THE SYSTEM WILL LOCK OUT IFTHE UNIT IS EQUIPPED WITH A ...

Page 49: ... CHECK FOR PROPERTHERMOSTAT OPERATION REMOVE VALVE LEAD AT GAS VALVE IF VALVE CLOSES RECHECKTHETHERMOSTAT AND WIRING IF OK THEN REPLACE VALVE YES NO SYSTEM RUNS UNTIL CALL FOR HEAT ENDS TROUBLESHOOTING ENDS REPEAT PROCEDURE UNTIL TROUBLE FREE OPERATION IS OBTAINED YES NO TURN THERMOSTAT OFF VALVE SHUTS OFF FLAME SHUTS OFF YES INDUCED DRAFT MOTOR STOPS AFTER 5 SECOND POSTPURGE YES YES CHECK FOR DIR...

Page 50: ...M 972 2 MAVERICK I ROOFTOP SYSTEMS 50 www DaikinApplied com Warranty Warranty Replacement Parts To find your local Daikin Certified Parts Distributor go to www DaikinApplied com and select Parts Locator ...

Page 51: ......

Page 52: ...ant to its standard terms and conditions of sale including Limited Product Warranty Consult your local Daikin Applied Representative for warranty details To find your local Daikin Applied Representative go to www DaikinApplied com Aftermarket Services To find your local parts office visit www DaikinApplied com or call 800 37PARTS 800 377 2787 To find your local service office visit www DaikinAppli...

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