Daikin DCH048 Series Service Instructions Manual
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Daikin DCH048 Series Service Instructions Manual

Cooling/heat pumps commercial package units with r-410a refrigerant 4 - 25 tons & accessories
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See also: Instruction and Installation Manual
Service Instructions
DCC Cooling/DCH Heat Pumps
Commercial Package Units
with R-410A Refrigerant
4 - 6 Tons & Accessories
Not for installation in the United States or Canada. This unit is for export only.
This manual is to be used by qualified, professionally trained HVAC
technicians only. Daikin does not assume any responsibility for property
damage or personal injury due to improper service procedures or services
performed by an unqualified person.
RSDX6412006r1
November 2016
Copyright © 2015
-
2016

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Summary of Contents for Daikin DCH048 Series

  • Page 1 Not for installation in the United States or Canada. This unit is for export only. This manual is to be used by qualified, professionally trained HVAC technicians only. Daikin does not assume any responsibility for property damage or personal injury due to improper service procedures or services performed by an unqualified person.

  • Page 2: Table Of Contents

    To locate an authorized servicer, please consult your telephone book or the dealer from whom you purchased this product. For further assistance, please contact: CONSUMER INFORMATION LINE - DAIKIN BRAND PRODUCTS TOLL FREE 1-855-770-5678 (U.S. only) email us at: customerservice@daikincomfort.com fax us at: (713) 856-1821 (Not a technical assistance line for dealers.)

  • Page 3: Important Information

    IMPORTANT INFORMATION SAFE REFRIGERANT HANDLING While these items will not cover every conceivable situation, they should serve as a useful guide. Refrigerants are heavier than air. They can "push out" the oxygen in your lungs or in any enclosed space.To avoid possible difficulty in breathing or death: •...
  • Page 4 208-230/1/60 (United States) 4 460/3/60 (United States) 300,000 BTU/h 15 kW 44 kW 208-230/3/60 (United States) 5 400/3/50 (Russia Daikin Brand) 350,000 BTU/h 400/3/60 (Saudi Arabia) A 400/3/50 (Russia Goodman Brand) 400/3/50 (Kuwait) E 400/3/50 (Argentina) See product specifications for heat size(s) available for each capacity.
  • Page 5 Daikin Commercial Multiposition Package Heat Pumps Models Description Daikin Commercial Package Heat Pump, Multiposition heat pump units, 400V 3 Phase, 60 Hz Direct Drive. Initial release DCH[048-060]XXX6DXXXAA of Daikin branded models. Daikin Commercial Package Heat Pump, Multiposition heat pump units, 400V 3 Phase, 60 Hz Direct Drive. Initial release DCH072XXX6BXXXAA of Daikin branded models.
  • Page 6 Daikin Commercial Multiposition Package Coolers Models Description Daikin Commercial Package Cooler, Multiposition cooling, 400V 3 Phase, 60 Hz Direct Drive. Initial release of 4-5 Ton DCC[048-060]XXX6DXXXAA Daikin branded models. Daikin Commercial Package Cooler, Multiposition cooling, 400V 3 Phase, 60 Hz Direct Drive. Initial release of 4-5 Ton DCC072XXX6BXXXAA Daikin branded models.

  • Page 7: Product Design

    PRODUCT DESIGN UNIT LOCATION • When the unit is heating, the temperature of the return air entering the unit must be a minimum of 55° F. ROUND EVEL NSTALLATIONS WARNING • When the unit is installed on the ground adjacent to the O PREVENT POSSIBLE EQUIPMENT DAMAGE, PROPERTY DAMAGE, PERSONAL building, a level concrete (or equal) base is recom- INJURY OR DEATH, THE FOLLOWING BULLET POINTS MUST BE OBSERVED...
  • Page 8 PRODUCT DESIGN CLEARANCES NSTALLATIONS Curb installations must comply with local codes and should be done in accordance with the established guidelines of the National Roofing Contractors Association. Proper unit installation requires that the roof curb be firmly and permanently attached to the roof structure. Check for adequate fastening method prior to setting the unit on the curb.
  • Page 9 PRODUCT DESIGN WARNING CAUTION HIGH VOLTAGE! O AVOID PROPERTY DAMAGE OR PERSONAL INJURY DUE TO FIRE, USE O AVOID PERSONAL INJURY OR DEATH DUE TO ONLY COPPER CONDUCTORS. ELECTRICAL SHOCK DO NOT TAMPER WITH FACTORY WIRING HE INTERNAL POWER AND CONTROL WIRING OF THESE UNITS ARE FACTORY INSTALLED AND HAVE CAUTION...
  • Page 10 PRODUCT DESIGN REAS ITHOUT ONVENIENCE UTLET It is recommended that an independent 115V power source be brought to the vicinity of the roof top unit for portable lights and tools used by the service mechanic. 3.5 DIA. NOTE: Refer to local codes for requirements. These outlets can also be factory installed.

  • Page 11: System Operation

    SYSTEM OPERATION DCC***XXX**XXX Typical Package Cooling or Package Gas Restrictor Orifice Assembly in Cooling Operation In the cooling mode the orifice is pushed into its seat forcing refrigerant to flow through the metered hole in the center of the orifice.
  • Page 12 SYSTEM OPERATION DCH***XXX**XXX Typical Heat Pump System in Cooling Reversing Valve (Energized) Indoor Outdoor Coil Coil Accumulator Reversing Valve (De-Energized) Indoor Outdoor Coil Coil Accumulator...
  • Page 13 SYSTEM OPERATION CIRCULATING AIR AND FILTERS STARTUP, ADJUSTMENTS, AND CHECKS UCTWORK WARNING The supply duct from the unit through a wall may be installed without clearance. However, minimum unit clearances must HIGH VOLTAGE! be maintained (see “Clearances” section). The supply duct O AVOID PERSONAL INJURY OR DEATH DUE TO should be provided with an access panel large enough to ELECTRICAL SHOCK...
  • Page 14 SYSTEM OPERATION VAPORATOR OTATION HECK HREE HASE ODELS BSTRUCTIONS LEARANCE AND IRING Remove any extraneous construction and shipping materials that may be found during this procedure. Rotate all fans Check that fan rotates clockwise when viewed from the drive manually to check for proper clearances and that they rotate side of unit and in accordance with rotation arrow shown on freely.
  • Page 15 SYSTEM OPERATION 6. Slowly lower the cooling temperature until the unit starts. 14. For thermostats with emergency heat switch, return to The compressor, blower and fan should now be operat- step 11. The emergency heat switch is located at the ing.

  • Page 16: System Operation

    SYSTEM OPERATION EFROST ONTROL During operation the power to the circuit board is controlled by a temperature sensor, which is clamped to a feeder tube entering the outdoor coil. Defrost timing periods of 30,60 and 90 minutes may be selected by connecting the circuit board jumper to 30, 60 and 90 respectively.

  • Page 17: Scheduled Maintenance

    SCHEDULED MAINTENANCE MAINTENANCE ILTERS CAUTION WARNING O PREVENT PROPERTY DAMAGE DUE TO FIRE AND LOSS OF HIGH VOLTAGE! EQUIPMENT EFFICIENCY OR EQUIPMENT DAMAGE DUE TO DUST AND LINT ISCONNECT ALL POWER BEFORE SERVICING OR BUILD UP ON INTERNAL PARTS, NEVER OPERATE UNIT WITHOUT AN AIR INSTALLING THIS UNIT ULTIPLE POWER SOURCES MAY FILTER INSTALLED IN THE RETURN AIR SYSTEM.
  • Page 18 SERVICING COOLING ANALYSIS CHART System Unsatisfactory No Cooling Complaint Operating Cooling Pressures POSSIBLE CAUSE Test Method DOTS IN ANALYSIS Remedy GUIDE INDICATE "POSSIBLE CAUSE" • Power Failure Test Voltage • • • Blown Fuse Inspect Fuse Size & Type • •...
  • Page 19 SERVICING Table of Contents Checking Voltage .......... 20 S-18A Crankcase Heater Thermostat ...... 28 Checking Wiring ..........21 S-21 Checking Reversing Valve & Solenoid ..28 Checking Thermostat, Wiring & Anticipator .. 21 S-24 Testing Defrost Control ......... 29 S-3A Thermostat &...

  • Page 20: Servicing

    SERVICING S-1 CHECKING VOLTAGE Three phase units require a balanced 3 phase power supply to operate. If the percentage of voltage imbalance exceeds 3% the unit must not be operated until the voltage condition is corrected. Max. Voltage Deviation HIGH VOLTAGE! Disconnect ALL power before servicing % Voltage = From Average Voltage...

  • Page 21: Checking Wiring

    SERVICING S-2 CHECKING WIRING 4. Check the continuity of the thermostat and wiring. Repair or replace as necessary. S-3B COOLING ANTICIPATOR HIGH VOLTAGE! The cooling anticipator is a small heater (resistor) in the Disconnect ALL power before servicing thermostat. During the "off" cycle, it heats the bimetal or installing this unit.

  • Page 22: Checking Contactor And/Or Relays

    SERVICING S-7 CHECKING CONTACTOR AND/OR RELAYS HIGH VOLTAGE! Disconnect ALL power before servicing or installing this unit. Multiple power sources may be present. Failure to do so may cause property damage, personal injury or death. VOLT/OHM METER The compressor contactor and other relay holding coils are wired into the low or line voltage circuits.

  • Page 23: Checking Fan Relay Contact

    SERVICING S-9 CHECKING FAN RELAY CONTACTS PSC equipped, single phase model coolers and heat pumps have an isolation relay with a 240 volt holding coil in addition DCG: to the EBTDR. The fan relays are incorporated into the control board. See section S-313 for checking control board for single phase WARNING gas models.

  • Page 24: Checking Loss Of Charge Protection

    SERVICING Testing relay holding coil S-12 CHECKING HIGH PRESSURE CONTROL 1. Remove the leads from the holding coil. 2. Using an ohmmeter, test across the coil terminals 1 and 3. If the coil does not test continuous, replace the relay. HIGH VOLTAGE! Disconnect ALL power before servicing or installing this unit.

  • Page 25: Checking Low Pressure Control

    SERVICING RELAY, START S-13 CHECKING LOW PRESSURE CONTROL A potential or voltage type relay is used to take the start The low pressure control senses the pressure in the suction capacitor out of the circuit once the motor comes up to line and will open its contacts on a drop in pressure.

  • Page 26: S-15B Capacitance Check

    SERVICING S-15B CAPACITANCE CHECK Using a hookup as shown below, take the amperage and HIGH VOLTAGE! voltage readings and use them in the formula: Disconnect ALL power before servicing or installing this unit. Multiple power sources may be present. Failure to do so may cause property damage, personal injury or death.

  • Page 27: Checking Compressor Windings

    SERVICING S-17A RESISTANCE TEST High Voltage Each compressor is equipped with an internal overload. Connections The line break internal overload senses both motor amperage 3/16" and winding temperature. High motor temperature or amper- C L G N age heats the disc causing it to open, breaking the common circuit within the compressor on single phase units.

  • Page 28: S-17D Operation Test

    SERVICING With the terminal protective cover in place, it is acceptable to replace the fuse or reset the circuit breaker ONE TIME ONLY to see if it was just a nuisance opening. If it opens HIGH VOLTAGE! again, DO NOT continue to reset. Disconnect ALL power before servicing or installing this unit.

  • Page 29: S-18A Crankcase Heater Thermostat

    SERVICING 5. Using VOM check for voltage across terminals "C & O". S-18A CHECKING CRANKCASE HEATER THER- Meter should read 24 volts. MOSTAT 6. Using VOM check for voltage across fan terminals DF1 Note: Not all models with crankcase heaters will have a and DF2 on the board.

  • Page 30: Checking Heater Limit Control(S)

    SERVICING S-100 REFRIGERATION REPAIR PRACTICE NDERCHARGE An undercharged heat pump on the heating cycle will cause low discharge pressure resulting in low suction pressure and DANGER frost accumulation on the outdoor coil. Always remove the refrigerant charge in a proper manner before applying heat to the system.

  • Page 31: Evacuation

    SERVICING 2. Start the vacuum pump and open the shut off valve to the WARNING high vacuum gauge manifold only. After the compound gauge (low side) has dropped to approximately 29 inches To avoid possible explosion, the line from the of vacuum, open the valve to the vacuum thermocouple nitrogen cylinder must include a pressure regulator gauge.

  • Page 32: Charging

    5. With the system still running, remove hose and reinstall both valve caps. Only use refrigerant certified to AHRI standards. Used refrigerant may cause compressor damage. Daikin is 6. Check system for leaks. not responsible for damage or the need for repairs...

  • Page 33: Overfeeding

    SERVICING 1. Run system at least 10 minutes to allow pressure to S-104 CHECKING COMPRESSOR EFFICIENCY stabilize. The reason for compressor inefficiency is broken or 2. Temporarily install thermometer on suction (large) line damaged near compressor with adequate contact and insulate for scroll flanks on Scroll compressors, reducing the ability of best possible reading.
  • Page 34 SERVICING Pressure vs. Temperature Chart R-410A PSIG °F PSIG °F PSIG °F PSIG °F PSIG °F PSIG °F -37.7 114.0 37.8 216.0 74.3 318.0 100.2 420.0 120.7 522.0 137.6 -34.7 38.7 74.9 100.7 121.0 137.9 116.0 218.0 320.0 422.0 524.0 -32.0 118.0 39.5...
  • Page 35 SERVICING SUBCOOLING REQUIRED LIQUID LINE TEMPERATURE LIQUID PRESSURE LIQUID PRESSURE REQUIRED SUBCOOLING TEMPERATURE (°F) AT ACCESS FITTING (PSIG) AT SERVICE VALVE (PSIG)

  • Page 36: Fixed Orifice Restriction Devices

    SERVICING S-111 FIXED ORIFICE RESTRICTION DEVICES S-113 OVERCHARGE OF REFRIGERANT The fixed orifice restriction device (flowrator) used in An overcharge of refrigerant is normally indicated by an conjunction with the indoor coil is a predetermined bore excessively high head pressure. (I.D.).

  • Page 37: Checking External Static Pressure

    Too much air can cause motor overloading and in many cases NOTE: Daikin does NOT approve the flushing method using this constitutes a poorly designed system. To determine R-11 refrigerant.

  • Page 38: Checking Temperature Rise

    SERVICING S-201 CHECKING TEMPERATURE RISE S-205 CHECKING BELT TENSION Temperature rise is related to the BTUH output of the unit and NOTE: Section on high static tables may require a field motor the amount of air (CFM) circulated over the heat exchanger. change.

  • Page 39: Indoor Fan Rotation Check

    SERVICING & V DRIVE BELT TENSION ADJUSTMENT HEAVES DJUSTMENT 1. Loosen set screw “B” using a 5/32" Allen key. 3 - 6 TON MODELS 2. Making half or full turns from closed position, adjust sheave pitch diameter for desired speed. DO NOT OPEN SMALL DEFLECTION FORCE MORE THAN FIVE FULL TURNS.

  • Page 40: Unit Wiring Diagrams

    DCC COMMERCIAL 3-6 Ton Packaged Air Conditioner Unit WIRING DIAGRAMS...
  • Page 41 DCC048-060XXX6BXXX** UNIT WIRING DIAGRAMS NOTE 3 NOTE 4 YL/PK PLF 2 LVJB PLF 1 RCCF SEE NOTE 2 CONTROL BOX YL/PK BL/PK COMP COMPONENT LEGEND FACTORY WIRING LINE VOLTAGE CONTACTOR SUPPLY VOLTAGE LOW VOLTAGE CONDENSER MOTOR 400/3/60 OPTIONAL HIGH VOLTAGE COMP COMPRESSOR OPTIONAL LOW VOLTAGE...
  • Page 42 UNIT WIRING DIAGRAMS DCC048-060XXXBDXXXA* NOTE 3 NOTE 4 YL/PK PLF 2 LVJB RCCF SEE NOTE 2 PLF 1 CONTROL BOX YL/PK BL/PK COMP SMOKE/FIRE DETECTOR REPLACES JUMPER COMPONENT LEGEND FACTORY WIRING LINE VOLTAGE CONTACTOR SUPPLY VOLTAGE LOW VOLTAGE CONDENSER MOTOR 400/3/50 OPTIONAL HIGH VOLTAGE COMP...
  • Page 43 UNIT WIRING DIAGRAMS DCC072XXX6BXXX** EBTDR 40 0 XFMR-R XFMR-C SPEED NOTE 2 YL/PK PLF 2 LVJB RCCF PLF 1 RD OR CONTROL BOX YL/PK BL/PK COMP FACTOR Y WIRING COMPONENT LEGEND SUPPLY VOLTAGE LINE VOLTAGE 400/3/60 LOW VOLTAGE BLOWER CONTACTOR OPTIONAL CONTACTOR HIGH VOLTAGE...
  • Page 44 DCH COMMERCIAL 3-6 Ton Packaged Heat Pump Unit WIRING DIAGRAMS...
  • Page 45 UNIT WIRING DIAGRAMS DCH048-060XXX6BXXX** CMC CONTACTOR YL/PK YL/PK SEE NOTE 4 PLF 2 PLF 1 RCCF LVD R 0-RV LVJB C-RV HVD R CON TROLBOX SEE NOTE 2 BL/PK BL/PK COMP COMPONENT LEGEND FACTO RY W IR ING CONTACTOR SUPP LY VOLTAGE LINE VOLTAG E COMPRESS OR CONTACTOR RELAY 400/3/60...
  • Page 46 UNIT WIRING DIAGRAMS DCH072XXX6BXXX** EBTDR XFMR-R XFMR-C SPEED SEENOTE 2 YL/PK PLF 2 YL/PK LVDR 0-RV C-RV HVDR RCCF PLF 1 SEE NOTE 4 BL/PK COMP SEE NOTE 4 COMPONENT LEGEND FACTORY WIRING 400/3/60 BLOWER CONTACTOR LINE VOLTAGE CONTACTOR LOW VOLTAGE COMPRESSOR CONTACTOR RELAY OPTIONAL HIGH VOLTAGE...
  • Page 47 Not for installation in the United States or Canada. This unit is for export only. This manual is to be used by qualified, professionally trained HVAC technicians only. Daikin does not assume any responsibility for property damage or personal injury due to improper service procedures or services performed by an unqualified person.
  • Page 48 To locate an authorized servicer, please consult your telephone book or the dealer from whom you purchased this product. For further assistance, please contact: CONSUMER INFORMATION LINE - DAIKIN BRAND PRODUCTS TOLL FREE 1-855-770-5678 (U.S. only) email us at: customerservice@daikincomfort.com fax us at: (713) 856-1821 (Not a technical assistance line for dealers.)
  • Page 49 IMPORTANT INFORMATION SAFE REFRIGERANT HANDLING While these items will not cover every conceivable situation, they should serve as a useful guide. Refrigerants are heavier than air. They can "push out" the oxygen in your lungs or in any enclosed space.To avoid possible difficulty in breathing or death: •...
  • Page 50 208-230/1/60 (United States) 4 460/3/60 (United States) 300,000 BTU/h 15 kW 44 kW 208-230/3/60 (United States) 5 400/3/50 (Russia Daikin Brand) 350,000 BTU/h 400/3/60 (Saudi Arabia) A 400/3/50 (Russia Goodman Brand) 400/3/50 (Kuwait) E 400/3/50 (Argentina) See product specifications for heat size(s) available for each capacity.
  • Page 51 DCH**XXX**XXX Daikin Commercial Multiposition Package Heat Pumps Model # Description Daikin Commercial Package Heat Pump, Multiposition heat pump units, 400V 3 Phase 60Hz. Belt Drive. Initial release of 7.5-12.5 Ton Daikin DCH[090-150]XXX6BXXXAA branded models. DCH[090-120]XXX6BXXXAB Daikin Commercial Package Heat Pump, Multiposition heat pump units, 400V 3 Phase 60Hz. Belt Drive with phase monitor DCH150XXX6BXXXAD Daikin Commercial Package Heat Pump, Multiposition heat pump units, 400V 3 Phase 60Hz.
  • Page 52 Daikin Commercial Multiposition Package Coolers Model # Description Daikin Commercial Package Cooler, Multiposition cooling units, 400V 3 Phase 60 Hz. Belt Drive. Initial release of 7.5-12.5 Ton Daikin branded DCC[090-150]XXX6BXXXAA models. Daikin Commercial Package Cooler, Multiposition cooling units, 400V 3 Phase 60 Hz. Belt Drive. Factory installed options (Low-Leak Downflow...
  • Page 53 PRODUCT DESIGN • UNIT LOCATION When the unit is heating, the temperature of the return air entering the unit must be between 50° F and 100° F. ROUND EVEL NSTALLATIONS WARNING • When the unit is installed on the ground adjacent to the O PREVENT POSSIBLE EQUIPMENT DAMAGE PROPERTY DAMAGE building, a level concrete (or equal) base is recom-...
  • Page 54 PRODUCT DESIGN CLEARANCES NSTALLATIONS Curb installations must comply with local codes and should be done in accordance with the established guidelines of the National Roofing Contractors Association. Proper unit installation requires that the roof curb be firmly and permanently attached to the roof structure. Check for adequate fastening method prior to setting the unit on the curb.
  • Page 55 PRODUCT DESIGN CAUTION WARNING HIGH VOLTAGE ! O PREVENT IMPROPER AND DANGEROUS OPERATION DUE TO WIRING ERRORS LABEL ALL WIRES PRIOR TO DISCONNECTION WHEN SERVICING O AVOID PERSONAL INJURY OR DEATH DUE TO ELECTRICAL CONTROLS ERIFY PROPER OPERATION AFTER SERVICING SHOCK DO NOT TAMPER WITH FACTORY WIRING INTERNAL POWER AND CONTROL WIRING OF THESE UNITS...
  • Page 56 PRODUCT DESIGN DIAMETER 0.875” HOLE DIAMETER 0.375” HOLE HIGH VOLTAGE ENTRANCE 10 3/16” LOW VOLTAGE ENTRANCE Power Wiring 26 ½” Thermostat Wiring ELECTRICAL ENTRANCE LOCATIONS Unit is equipped with a Low Voltage Terminal Block and has Single Point wiring to the contactor or power block if equipped. Power and Low Voltage Block Locations for 2 Speed Models OLTAGE...
  • Page 57 SYSTEM OPERATION DCC***XXX**XXX Typical Package Cooling or Package Gas Restrictor Orifice Assembly in Cooling Operation In the cooling mode the orifice is pushed into its seat forcing refrigerant to flow through the metered hole in the center of the orifice.
  • Page 58 SYSTEM OPERATION DCH***XXX**XXX Typical Package Heat Pump Reversing Valve (Energized) Indoor Outdoor Coil Coil Accumulator COOLING CYCLE Reversing Valve (De-Energized) Indoor Outdoor Coil Coil Accumulator HEATING CYCLE...
  • Page 59 SYSTEM OPERATION STARTUP, ADJUSTMENTS, AND CHECKS CIRCULATING AIR AND FILTERS UCTWORK The supply duct should be provided with an access panel WARNING large enough to inspect the air chamber downstream of the HIGH VOLTAGE! heat exchanger. A cover should be tightly attached to prevent air leaks.
  • Page 60 SYSTEM OPERATION BSTRUCTIONS LEARANCE AND IRING LECTRICAL NPUT HECK Remove any extraneous construction and shipping materials Make preliminary check of evaporator fan ampere draw and that may be found during this procedure. Rotate all fans verify that motor nameplate amps are not exceeded. A final manually to check for proper clearances and that they rotate check of amp draw should be made upon completion of air freely.
  • Page 61 SYSTEM OPERATION HEAT PUMP OPERATION WARNING HIGH VOLTAGE! OOLING YCLE ISCONNECT ALL POWER BEFORE SERVICING OR When the heat pump is in the cooling cycle, it operates INSTALLING THIS UNIT ULTIPLE POWER SOURCES MAY exactly as a Summer Air Conditioner unit. In this mode, all the BE PRESENT AILURE TO DO SO MAY CAUSE PROPERTY DAMAGE...
  • Page 62 SYSTEM OPERATION EFROST ONTROL NOTE: DCH models have one stage of mechanical heating. The defrost accumulation period will start when either first or second stage defrost thermostat closes. Defrost termination occurs when both thermostats open or the 10 minute cycle has completed.
  • Page 63 SCHEDULED MAINTENANCE MAINTENANCE ILTERS CAUTION WARNING O PREVENT PROPERTY DAMAGE DUE TO FIRE AND LOSS OF HIGH VOLTAGE! EQUIPMENT EFFICIENCY OR EQUIPMENT DAMAGE DUE TO DUST AND LINT ISCONNECT ALL POWER BEFORE SERVICING OR BUILD UP ON INTERNAL PARTS, NEVER OPERATE UNIT WITHOUT AN AIR INSTALLING THIS UNIT ULTIPLE POWER SOURCES MAY FILTER INSTALLED IN THE RETURN AIR SYSTEM.
  • Page 64 DCC***XXX**XXX SERVICING COOLING ANALYSIS CHART System Unsatisfactory No Cooling Complaint Operating Cooling Pressures POSSIBLE CAUSE Test Method DOTS IN ANALYSIS Remedy GUIDE INDICATE "POSSIBLE CAUSE" • Power Failure Test Voltage • • • Blown Fuse Inspect Fuse Size & Type •...
  • Page 65 SERVICING Table of Contents Checking Voltage .......... 20 S-18A Crankcase Heater Thermostat ...... 28 Checking Wiring ..........21 S-21 Checking Reversing Valve & Solenoid ... 28 Checking Thermostat, Wiring & Anticipator .. 21 S-24 Testing Defrost Control ........28 S-25 Testing Defrost Thermostat ......

  • Page 66: Checking Voltage

    SERVICING Three phase units require a balanced 3 phase power supply S-1 CHECKING VOLTAGE to operate. If the percentage of voltage imbalance exceeds 3% the unit must not be operated until the voltage condition is corrected. Max. Voltage Deviation HIGH VOLTAGE! Disconnect ALL power before servicing % Voltage = From Average Voltage...

  • Page 67: Checking Wiring

    SERVICING S-2 CHECKING WIRING 4. Check the continuity of the thermostat and wiring. Repair or replace as necessary. S-3B COOLING ANTICIPATOR HIGH VOLTAGE! The cooling anticipator is a small heater (resistor) in the Disconnect ALL power before servicing thermostat. During the "off" cycle, it heats the bimetal or installing this unit.

  • Page 68: Checking Contactor And/Or Relays

    SERVICING S-7 CHECKING CONTACTOR AND/OR RELAYS HIGH VOLTAGE! Disconnect ALL power before servicing or installing this unit. Multiple power sources may be present. Failure to do so may cause property damage, personal injury or death. VOLT/OHM The compressor contactor and other relay holding coils are METER wired into the low or line voltage circuits.
  • Page 69 SERVICING S-9 CHECKING FAN RELAY CONTACTS PSC equipped, single phase model coolers and heat pumps have an isolation relay with a 240 volt holding coil in addition DCG: to the EBTDR. The fan relays are incorporated into the control board. See section S-313 for checking control board for single phase WARNING gas models.

  • Page 70: Checking High Pressure Control

    SERVICING The high pressure control senses the pressure in the Testing relay holding coil discharge line. If abnormally high discharge pressures develop, the contacts of the control open, breaking the 1. Remove the leads from the holding coil. control circuit before the compressor motor overloads. This 2.

  • Page 71: S-15A Resistance Check

    SERVICING CAPACITOR, START WARNING SCROLL COMPRESSOR MODELS Discharge capacitor through a 20 to 30 OHM Hard start components are not required on Scroll compressor resistor before handling. equipped units due to a non-replaceable check valve located in the discharge line of the compressor. However hard start kits are available and may improve low voltage starting characteristics.

  • Page 72: Checking Motors

    SERVICING If the compressor terminal PROTECTIVE COVER and gas- WARNING ket (if required) are not properly in place and secured, there is a remote possibility if a terminal vents, that the vaporous Discharge capacitor through a 20 to 30 OHM and liquid discharge can be ignited, spouting flames several resistor before handling.

  • Page 73: S-17B Ground Test

    SERVICING 4. If no visual problems indicated, carefully remove the leads at the compressor terminals. WARNING Damage can occur to the glass embedded terminals if OHMMETER the leads are not properly removed. This can result in COMP terminal and hot oil discharging. TESTING COMPRESSOR WINDINGS Carefully retest for ground, directly between compressor If either winding does not test continuous, replace the...

  • Page 74: Testing Defrost Control

    SERVICING Crankcase heaters are used to prevent migration or accumu- If voltage is registered at the coil, tap the valve body lightly lation of refrigerant in the compressor crankcase during the while switching the system from HEATING to COOLING, off cycles and prevents liquid slugging or oil pumping on start etc.

  • Page 75: Checking Heater Limit Control(S)

    SERVICING TROUBLESHOOTING S-50 CHECKING HEATER LIMIT CONTROL(S) THE FOLLOWING INFORMATION IS FOR USE BY QUALI- (OPTIONAL ELECTRIC HEATERS) FIED SERVICE AGENCY ONLY: OTHERS SHOULD NOT Each individual heater element is protected with an automatic ATTEMPT TO SERVICE THIS EQUIPMENT. rest limit control connected in series with each element to Common Causes of Unsatisfactory Operation of Heat Pump prevent overheating of components in case of low airflow.

  • Page 76: Refrigeration Repair Practice

    SERVICING Pressure test the system using dry nitrogen and soapy water S-100 REFRIGERATION REPAIR PRACTICE to locate leaks. If you wish to use a leak detector, charge the system to 10 psi using the appropriate refrigerant then use DANGER nitrogen to finish charging the system to working pressure, then apply the detector to suspect areas.

  • Page 77: Charging

    SERVICING Operating the compressor with the suction valve LOW SIDE HIGH SIDE closed will cause serious compressor damage. GAUGE GAUGE AND VALVE AND VALVE Charge the system with the exact amount of refrigerant. Refer to the specification section or check the unit name- plates for the correct refrigerant charge.

  • Page 78: Overfeeding

    SERVICING The reason for compressor inefficiency is broken or damaged suction and/or discharge valves, or scroll flanks on Scroll CAUTION compressors, reducing the ability of the compressor to pump To prevent personal injury, carefully connect and refrigerant vapor. disconnect manifold gauge hoses. Escaping liquid The condition of the valves or scroll flanks is checked in the refrigerant can cause burns.
  • Page 79 SERVICING Pressure vs. Temperature Chart R-410A PSIG °F PSIG °F PSIG °F PSIG °F PSIG °F PSIG °F -37.7 114.0 37.8 216.0 74.3 318.0 100.2 420.0 120.7 522.0 137.6 -34.7 38.7 74.9 100.7 121.0 137.9 116.0 218.0 320.0 422.0 524.0 -32.0 118.0 39.5...
  • Page 80 SERVICING SUBCOOLING REQUIRED LIQUID LINE TEMPERATURE LIQUID PRESSURE LIQUID PRESSURE REQUIRED SUBCOOLING TEMPERATURE (°F) AT ACCESS FITTING (PSIG) AT SERVICE VALVE (PSIG)

  • Page 81: Checking Restricted Liquid Line

    Severe burns may result. prevent liquid return to the compressor. An evaporator coil, using a fixed orifice restrictor device NOTE: Daikin does NOT approve the flushing method using (flowrator) metering device, could allow refrigerant to return to R-11 refrigerant. the compressor under extreme overcharge conditions.

  • Page 82: Checking Temperature Rise

    SERVICING Use part number RF000127 suction line filter drier kit. This drier should be installed as close to the compressor suction fitting as possible. The filter must be accessible and be rechecked for a pressure drop after the system has operated for a time.

  • Page 83: Checking Belt Tension

    SERVICING 4. For gas heat units, the airflow must be adjusted so that When new V-belts are installed on a drive, the initial tension will drop rapidly during the first few hours. Check tension the air temperature rise falls within the ranges given stated frequently during the first 24 hours of operation.

  • Page 84: Indoor Fan Rotation Check

    SERVICING 4. Carefully put on belts and adjust belt tension. DO NOT S-206 INDOOR FAN ROTATION CHECK FORCE BELTS OVER GROOVES. Evaporator Fan Rotation Check (Three Phase Models 5. Ensure all keys are in place and the set screws tight Only) before starting drive.
  • Page 85 ACCESSORIES DCC/H***XXX**XXX DAIKIN COMMERCIAL PACKAGE UNIT ACCESSORIES Accessory Number Description Model Size **EHK* Heater Kit 7.5-12.5 Ton Downflow Jade Economizer All Fuels 7.5-12.5 Ton DDNECNJ90150B (MCCDANIEL METALS) Downflow Jade Economizer All Fuels (No Barometric Relief) 7.5-12.5 Ton DDNECNJ90150NR (MCCDANIEL METALS) Downflow Economizer (ROOFTOP SYSTEMS) 7.5-10 Ton...
  • Page 86 ACCESSORIES WIRING DIAGRAMS HIGH VOLTAGE! DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH. Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
  • Page 87 EHK4-16 HEATER KIT WIRING DIAGRAMS HIGH VOLTAGE! DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH. HTR 1 HTR 2 HTR 3 MODEL - EHK3-10, EHK3-15, EHK3-16 EHK4-10, EHK4-15, EHK4-16...
  • Page 88 EHK4-30 HEATER KIT WIRING DIAGRAMS HIGH VOLTAGE! DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH. HTR 4 HTR 1 HTR 5 HTR 2 HTR 6 HTR 3...
  • Page 89 EHK4-45 HEATER KIT WIRING DIAGRAMS HIGH VOLTAGE! DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH. HTR 7 HTR 4 HTR 1 HTR 8 HTR 5 HTR 2...
  • Page 90 DCC COMMERCIAL 7.5-12.5 Ton Packaged Air Conditioner Unit WIRING DIAGRAMS...
  • Page 91 UNIT WIRING DIAGRAMS DCC090-150XXX6BXXX** Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
  • Page 92 UNIT WIRING DIAGRAMS DCC090-150XXX6BXXX** COMPONENT LEGEND BLOWER CONTACTOR 400/3/60 BLOWER RELAY COMPRESSOR CONTACTOR CIRCUIT BREAKER COMPRESSOR CONTACTOR RELAY CONDENSER MOTOR CONDENSER MOTOR RELAY COMP COMPRESSOR DEFROST CONTROL DEFROST THERMOSTAT ECON ECONOMIZER EBTD ELECTRONIC BLOWER TIME DELAY EVAPORATOR MOTOR RELAY RELAY EVAPORATOR MOTOR FAN CAPACITOR EQUPIMENT GROUND...
  • Page 93 DCH COMMERCIAL 7.5-12.5 Ton Packaged Heat Pump Unit WIRING DIAGRAMS...
  • Page 94 DCH090-150XXX6BXXX** UNIT WIRING DIAGRAMS Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
  • Page 95 DCH090-150XXX6BXXX** UNIT WIRING DIAGRAMS SUPP LY VO LT AG E 400 /3/60 COMPONENT LEGE ND FACTORY WIRING BLOW ER CONTAC TOR LIN E VOLTAGE BLOW ER RE LAY COMP1 COMP1 L OW VOLTAGE CIRCU IT BREA KER O PTIONAL COMPRES SOR CO NTACTOR RELAY CC R H IGH VOLTAGE COMPRES SOR CO NTACTOR...
  • Page 96 Not for installation in the United States or Canada. This unit is for export only. This manual is to be used by qualified, professionally trained HVAC technicians only. Daikin does not assume any responsibility for property damage or personal injury due to improper service procedures or services performed by an unqualified person.
  • Page 97 To locate an authorized servicer, please consult your telephone book or the dealer from whom you purchased this product. For further assistance, please contact: CONSUMER INFORMATION LINE - DAIKIN BRAND PRODUCTS TOLL FREE 1-855-770-5678 (U.S. only) email us at: customerservice@daikincomfort.com fax us at: (713) 856-1821 (Not a technical assistance line for dealers.)
  • Page 98 IMPORTANT INFORMATION SAFE REFRIGERANT HANDLING While these items will not cover every conceivable situation, they should serve as a useful guide. Refrigerants are heavier than air. They can "push out" the oxygen in your lungs or in any enclosed space.To avoid possible difficulty in breathing or death: •...
  • Page 99 208-230/1/60 (United States) 4 460/3/60 (United States) 300,000 BTU/h 15 kW 44 kW 208-230/3/60 (United States) 5 400/3/50 (Russia Daikin Brand) 350,000 BTU/h 400/3/60 (Saudi Arabia) A 400/3/50 (Russia Goodman Brand) 400/3/50 (Kuwait) E 400/3/50 (Argentina) See product specifications for heat size(s) available for each capacity.
  • Page 100 DCC***XXX**XXX Daikin Commercial Package Coolers Model # Description Daikin Commercial Package Cooler, R410A, 400V 3 Phase 60 Hz. Belt Drive. Initial release of 15-25 Ton DCC[180-300]XXX6BXXXAA Daikin branded models. DCC[240-300]XXX6BXXXAB Daikin Commercial Package Cooler, R410A, 400V 3 Phase 60 Hz. Belt Drive with phase monitor.
  • Page 101 PRODUCT DESIGN UNIT LOCATION NSTALLATIONS Curb installations must comply with local codes and should be done in accordance with the established guidelines of the WARNING National Roofing Contractors Association. O PREVENT POSSIBLE EQUIPMENT DAMAGE PROPERTY DAMAGE Proper unit installation requires that the roof curb be firmly PERSONAL INJURY OR DEATH THE FOLLOWING BULLET POINTS MUST BE and permanently attached to the roof structure.
  • Page 102 PRODUCT DESIGN ELECTRICAL WIRING CLEARANCES WARNING HIGH VOLTAGE ! 36”; minimum roof overhang ISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT ULTIPLE POWER SOURCES MAY BE PRESENT AILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH 48”...
  • Page 103 PRODUCT DESIGN Main power wiring should be sized for the minimum wire ampacity shown on the unit’s database. Size wires in accordance with the ampacity tables in Article 310 of the National Electrical Code. If long wires are required, it may be necessary to increase the wire size to prevent excessive Line voltage connects voltage drop.
  • Page 104 PRODUCT DESIGN 25 TON POWER AND LOW VOLTAGE BLOCK LOCATIONS locate the device where it may be directly exposed to supply air, sunlight or other sources of heat. Follow installation instructions packaged with the thermostat. WARNING 3. Use #18 AWG wire for 24V control wiring runs not AILURE OF UNIT DUE TO OPERATION ON IMPROPER LINE VOLTAGE OR exceeding 75 feet.
  • Page 105 SYSTEM OPERATION DCC***XXX**XXX Typical Package Cooling or Package Gas Indoor Outdoor Coil Coil Thermostatic Expansion Valve Either a thermostatic expansion valve or restrictor orifice assembly may be used depending on model, refer to the parts catalog for the model being serviced.
  • Page 106 SYSTEM OPERATION CIRCULATING AIR AND FILTERS to airborne bacteria and spores. Periodic cleaning is neces- sary to prevent this build-up from plugging the drain. UCTWORK The supply duct should be provided with an access panel STARTUP, ADJUSTMENTS, AND CHECKS large enough to inspect the air chamber downstream of the heat exchanger.
  • Page 107 SYSTEM OPERATION workmanship. Also check for leaks around gaskets. Note verify that motor nameplate amps are not exceeded. A final any deficiencies in a separate report and forward to the check of amp draw should be made upon completion of air contractor.
  • Page 108 SYSTEM OPERATION COOL (HIGH COOL) starts. The blower, both fans, and (80° db / 67° wb) and outdoor (95° db). While operating at this both compressors should now be operating. Allow the condition, the subcooling should range from 12° to 15° F for unit to run 10 minutes, make sure cool air is being each refrigeration circuit, for 15 and 20 ton models.
  • Page 109 SCHEDULED MAINTENANCE MAINTENANCE ILTERS CAUTION WARNING O PREVENT PROPERTY DAMAGE DUE TO FIRE AND LOSS OF EQUIPMENT HIGH VOLTAGE ! EFFICIENCY OR EQUIPMENT DAMAGE DUE TO DUST AND LINT BUILD UP ISCONNECT ALL POWER BEFORE SERVICING OR ON INTERNAL PARTS NEVER OPERATE UNIT WITHOUT AN AIR FILTER INSTALLING THIS UNIT ULTIPLE POWER SOURCES MAY...
  • Page 110 DCC***XXX**XXX SERVICING COOLING ANALYSIS CHART System Unsatisfactory No Cooling Complaint Operating Cooling Pressures POSSIBLE CAUSE Test Method DOTS IN ANALYSIS Remedy GUIDE INDICATE "POSSIBLE CAUSE" • Power Failure Test Voltage • • • Blown Fuse Inspect Fuse Size & Type •...
  • Page 111 SERVICING Table of Contents Checking Voltage .......... 17 S-18 Testing Crankcase Heater (Optional Item) ..24 Checking Wiring ..........18 S-50 Checking Heater Limit Control(s) ....25 Checking Thermostat, Wiring & Anticipator .. 18 S-100 Refrigeration Repair Practice ......25 S-3A Thermostat &...

  • Page 112: Checking Voltage

    SERVICING S-1 CHECKING VOLTAGE Three phase units require a balanced 3 phase power supply to operate. If the percentage of voltage imbalance exceeds 3% the unit must not be operated until the voltage condition is corrected. Max. Voltage Deviation HIGH VOLTAGE! Disconnect ALL power before servicing % Voltage = From Average Voltage...

  • Page 113: Checking Wiring

    SERVICING S-2 CHECKING WIRING 4. Check the continuity of the thermostat and wiring. Repair or replace as necessary. S-3B COOLING ANTICIPATOR HIGH VOLTAGE! The cooling anticipator is a small heater (resistor) in the Disconnect ALL power before servicing thermostat. During the "off" cycle, it heats the bimetal or installing this unit.

  • Page 114: Checking Contactor And/Or Relays

    SERVICING S-7 CHECKING CONTACTOR AND/OR RELAYS HIGH VOLTAGE! Disconnect ALL power before servicing VOLT/OHM or installing this unit. Multiple power METER sources may be present. Failure to do so may cause property damage, personal injury or death. Ohmmeter for testing holding coil Voltmeter for testing contacts The compressor contactor and other relay holding coils are wired into the low or line voltage circuits.
  • Page 115 SERVICING Checking EBTDR Contact Operation With power on: 3. Apply 240 volts to coil terminals 1 and 3. 4. Using a VOM, check for 240 volts from terminals 3 and 1 of relay. Should read 240 volts. In no voltage, check wiring from heater kit to relay.

  • Page 116: Checking High Pressure Control

    SERVICING S-11 CHECKING LOSS OF CHARGE PROTEC- If it cuts-out at 660 PSIG ± 10 PSIG, it is operating normally (See causes for high head pressure in Service Problem Analysis Guide). If it cuts out below this pressure range, replace the control. The control should reset at 420 PSIG ± (Heat Pump Models) 25 PSIG.

  • Page 117: S-15A Resistance Check

    SERVICING TESTING CAPACITOR RESISTANCE These capacitors have a 15,000 ohm, 2 watt resistor wired across its terminals. The object of the resistor is to discharge 2. Set an ohmmeter on its highest ohm scale and connect the capacitor under certain operating conditions, rather than the leads to the capacitor - having it discharge across the closing of the contacts within Good Condition - indicator swings to zero and...

  • Page 118: Checking Motors

    SERVICING S-16 CHECKING MOTORS Ignition cannot occur at the venting terminal without the presence of contaminant air, and cannot occur externally from the venting terminal without the presence of an external S-16A CHECKING FAN MOTOR WINDINGS ignition source. (PSC MOTORS) Therefore, proper evacuation of a hermetic system is essen- tial at the time of manufacture and during servicing.

  • Page 119: S-17B Ground Test

    SERVICING S-17B GROUND TEST S-17D OPERATION TEST If fuse, circuit breaker, ground fault protective device, If the voltage, capacitor, overload and motor winding test fail etc., has tripped, this is a strong indication that an to show the cause for failure: electrical problem exists and must be found and cor- rected.

  • Page 120: Checking Heater Limit Control(S)

    SERVICING 1. Never open a system that is under vacuum. Air and S-50 CHECKING HEATER LIMIT CONTROL(S) moisture will be drawn in. (OPTIONAL ELECTRIC HEATERS) 2. Plug or cap all openings. 3. Remove all burrs and clean the brazing surfaces of the Each individual heater element is protected with an automatic tubing with sand cloth or paper.

  • Page 121: Evacuation

    SERVICING S-102 EVACUATION WARNING HIGH SIDE LOW SIDE GAUGE GAUGE AND VALVE AND VALVE REFRIGERANT UNDER PRESSURE! Failure to follow proper procedures may cause property damage, personal injury or death. This is the most important part of the entire service procedure. The life and efficiency of the equipment is dependent upon the thoroughness exercised by the serviceman when evacuating air (non-condensables) and moisture from the system.

  • Page 122: Checking Compressor Efficiency

    Due to their design, Scroll compressors are inherently more tolerant of liquid refrigerant. Only use refrigerant certified to AHRI standards. Used refrigerant may cause compressor damage. Daikin is not responsible for damage or the need for repairs NOTE: Even though the compressor section of a Scroll...

  • Page 123: Checking Subcooling

    SERVICING 5. Capture the charge, replace the valve and drier, evacuate S-109 CHECKING SUBCOOLING and recharge. Refrigerant liquid is considered subcooled when its tempera- S-112 CHECKING RESTRICTED LIQUID LINE ture is lower than the saturation temperature corresponding to its pressure. The degree of subcooling equals the degrees When the system is operating, the liquid line is warm to the of temperature decrease below the saturation temperature at touch.
  • Page 124 SERVICING Pressure vs. Temperature Chart R-410A PSIG °F PSIG °F PSIG °F PSIG °F PSIG °F PSIG °F -37.7 37.8 74.3 100.2 120.7 137.6 114.0 216.0 318.0 420.0 522.0 -34.7 116.0 38.7 218.0 74.9 320.0 100.7 422.0 121.0 524.0 137.9 -32.0 118.0 39.5...
  • Page 125 SUBCOOLING SERVICING REQUIRED LIQUID LINE TEMPERATURE LIQUID PRESSURE LIQUID PRESSURE REQUIRED SUBCOOLING TEMPERATURE (°F) AT ACCESS FITTING (PSIG) AT SERVICE VALVE (PSIG)

  • Page 126: Compressor Burnout

    Severe burns may result. 1. Using a draft gauge (inclined manometer) measure the static pressure of the return duct at the inlet of the unit, NOTE: Daikin does NOT approve the flushing method using (Negative Pressure). R-11 refrigerant. 2. Measure the static pressure of the supply duct, (Positive Suction Line Drier Clean-Up Method Pressure).

  • Page 127: Indoor Fan Rotation Check

    SERVICING blower housing. If it does not, reverse any two incoming between the minimum and maximum force. To determine the power cables at Single Point Power Block. In this case, deflection distance from the normal position, use a straight- repeat bearing check. edge or stretch a cord from sheave to sheave to use as a reference line.
  • Page 128 DCC***XXX**XXX ACCESSORIES DAIKIN COMMERCIAL PACKAGE UNIT ACCESSORIES Accessory Number Description Model Size **EHK* Heater Kit 15-25 Ton ** Complete listing of EHK kits listed on electrical data page in DCC manuals HEATER KITS HEATER KIT MINIMUM CFM UNIT MODEL NUMBER...
  • Page 129 EHK4-31 HEATER KIT WIRING DIAGRAMS HIGH VOLTAGE! DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH. HTR 2 HTR 2 HTR 1 HTR 1 HTR 3 HTR 3...
  • Page 130 EHK4-46 HEATER KIT WIRING DIAGRAMS HIGH VOLTAGE! DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH. HTR 2 HTR 3 HTR 2 HTR 3 HTR 2 HTR 3 HTR 1 HTR 1...
  • Page 131 EHK4-60 HEATER KIT WIRING DIAGRAMS HIGH VOLTAGE! DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH. HTR 2 HTR 3 HTR 2 HTR 3 HTR 2 HTR 3 HTR 2 HTR 3 HTR 1...
  • Page 132 EHK4-75 HEATER KIT WIRING DIAGRAMS HIGH VOLTAGE! DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH. HTR 2 HTR 3 HTR 2 HTR 3 HTR 2 HTR 3 HTR 2 HTR 3 HTR 2 HTR 3...
  • Page 133 DCC COMMERCIAL 15 - 25 Ton Packaged Air Conditioner Unit WIRING DIAGRAMS...
  • Page 134 UNIT WIRING DIAGRAMS DCC180XXX6BXXX** POWER SUPPLY 400/30/60 BK RD CCH2 COMP CCH1 COMP NOTE 5 400v CCR2 CCHR2 CCHR1 LPS2 HPS2 NOTE 3 PLF 2 LPS1 HPS1 CCR1 PLF 1 EBTDR NOTE XFMR-R XFMR-C SPEED UP W1 W2 Y1 Y2 SEE NOTE 4 TO THERMOSTAT 0140L06195- A...
  • Page 135 UNIT WIRING DIAGRAMS DCC180XXX6BXXX** L1 L2 L3 Yout 0140L06196-A Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
  • Page 136 DCC240XXX6BXXX** UNIT WIRING DIAGRAMS POWER SUPPLY 400V 3 ph / 60hZ CCH2 COMP CCH1 COMP NOTE 5 415V 380V 460V CCR2 575V CCHR2 CCHR1 LPS2 HPS2 SEE NOTE 3 PLF 2 LPS1 HPS1 CCR1 PLF 1 EBTDR NOTE XFMR-R XFMR-C SPEED UP SEE NOTE 4 TO THERMOSTAT...
  • Page 137 DCC240XXX6BXXX** UNIT WIRING DIAGRAMS L1 L2 L3 Yout 0140L06202- A Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
  • Page 138 DCC300XXX6BXXX** UNIT WIRING DIAGRAMS CONTROLS DIAGRAM DCC300, 1 SPD EM SUPPLY (LINE) VOLTAGE 24 VAC SMOKE DETECTOR SENSOR 1 SEN1 FIELD CONTROL WIRING AUX A SENSOR 2 SEN2 AUX B 24V AC/DC 24V AC/DC CLASS 2 CCR1 THERMOSTAT WIRING HPS1 LPS1 2 STAGE COOLING 2 (NO)
  • Page 139 UNIT WIRING DIAGRAMS DCC300XXX6BXXX** POWER DIAGRAM DCC300, 400V CCAS1 CCH1 COMP 1 CCAS2 CCH2 COMP 2 CMC 1 FB 1 CMC 2 24V CNTL VOLTAGE LINE VOLTAGE FACTORY WIRING LINE VOLTAGE LOW VOLTAGE OPTIONAL HIGH VOLTAGE FIELD WIRING HIGH VOLTAGE LOW VOLTAGE WIRE CODE B LACK...

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