Daikin DRG0361DL00001S Service Instructions Manual
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Daikin DRG0361DL00001S Service Instructions Manual

Drg gas electric/drc cooling/drh heat pump commercial package units with r-410a refrigerant 3-6 tons & accessories
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DRG Gas Electric/DRC Cooling/DRH Heat Pump Commercial Package Units
With R-410A Refrigerant 3-6 Tons & Accessories
PROP 65 WARNING
FOR CALIFORNIA CONSUMERS
Cancer and Reproductive Harm -
www.P65Warnings.ca.gov
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.
Copyright © 2021
Service Instructions
WARNING
Only personnel that have been trained to install,
adjust, service or repair(hereinafter, "service") the
equipment specified in this manual should service the
equipment. The manufacturer will not be responsible
for any injury or property damage arising from
improper service or service procedures. If you service
0140M00517-A
this unit, you assume responsibility for any injury
or property damage which may result. In addition,
in jurisdictions that require one or more licenses to
service the equipment specified in this manual, only
licensed personnel should service the equipment.
Improper installation, adjustment, servicing or
repair of the equipment specified in this manual, or
attempting to install, adjust, service or repair the
equipment specified in this manual without proper
training may result in product damage, property
damage, personal injury or death.
WARNING
RSD6412022
January 2021

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Summary of Contents for Daikin DRG0361DL00001S

  • Page 1 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@daikinac.com fax us at: (713) 856-1821 (Not a technical assistance line for dealers.)
  • Page 3 IMPORTANT INFORMATION Safe Refrigerant Handling WARNING While these items will not cover every concievable System contaminants, improper service procedure situation, they should serve as a usefull guide. and/or physical abuse affecting hermetic compressor electrical terminals may cause dangerous system venting. WARNING The successful development of hermetically sealed Refrigerants are heavier than air.

  • Page 4: Product Identification

    PRODUCT IDENTIFICATION NOMENCLATURE The model number is used for positive identification of component parts used in manufacturing. Please use this number when requesting service or parts information.
  • Page 5 PRODUCT IDENTIFICATION NOMENCLATURE • Stainless-Steel Heat Exchanger (Gas only units): A • Hinged Access Panels: Allows access to unit's major tubular heat exchanger made of 409-type stainless steel components. Combined with latches for easy access is installed in the unit. to control box, compressor, filters and blower motor.

  • Page 6: Accessories

    ACCESSORIES DRC-DD 3-6 TON (HELC AC) Fits Model Field Factory Operating Daikin Master Item # Vendor P/N Ref Description Size Installed Installed Weight, lb Electric Heat Kits EHXD-1S05FI 6000-147-205 Electric Heat Kit Factory Installed, 5 KW - 240V - 1PH 3-5 ton √...
  • Page 7 ACCESSORIES DRC-DD 3-6 TON (HELC AC) Fits Model Field Factory Operating Daikin Master Item # Vendor P/N Ref Description Size Installed Installed Weight, lb Electric Heat Kits EHXD-3S16 6000-151-316 Electric Heat Kit, 15 KW - 240V - 3PH 3 ton √...
  • Page 8 Hold Down Bracket Kit for Competitor's Roofcurb [Restraint Clips Carrier Curb (Curb Bracket Kit)] 3-6 ton √ 0270L01250 MH-DKN12SA-OEM Hold Down Bracket Kit for Daikin Roofcurb [Restraint Clips Daikin Curbs (Curb Bracket Kit)] 3-6 ton √ 0221L00019 CRBK-DKN12FA-14 Roof Curb 14" Tall Seismic with Hold Down Brackets, Knocked Down 3-6 ton √...
  • Page 9 Hold Down Bracket Kit for Competitor's Roofcurb [Restraint Clips Carrier Curb (Curb Bracket Kit)] 3-6 ton √ 0270L01250 MH-DKN12SA-OEM Hold Down Bracket Kit for Daikin Roofcurb [Restraint Clips Daikin Curbs (Curb Bracket Kit)] 3-6 ton √ 0221L00019 CRBK-DKN12FA-14 Roof Curb 14" Tall Seismic with Hold Down Brackets, Knocked Down 3-6 ton √...
  • Page 10 ACCESSORIES DRG-DD 3-6 TON (HELC GAS) Fits Model Field Factory Daikin Master Item # Vendor P/N Ref Description Operating Weight, lb Size Installed Installed Concentrics 0270L01602 1017-100A-DKN Concentric Diffuser 24 x 48 with 16" dia collars 3-6 ton √ 0270L01603 1017-200A-DKN Concentric Diffuser 24 x 48 with 18"...
  • Page 11 ACCESSORIES DRH-DD 3-6 TON (HELC HP) Fits Model Field Factory Operating Daikin Master Item # Vendor P/N Ref Description Size Installed Installed Weight, lb Electric Heat Kits EHXD-1S05FI 6000-147-205 Electric Heat Kit Factory Installed, 5 KW - 240V - 1PH 3-5 ton √...
  • Page 12 ACCESSORIES DRH-DD 3-6 TON (HELC HP) Fits Model Field Factory Operating Daikin Master Item # Vendor P/N Ref Description Size Installed Installed Weight, lb EHXD-3S16 6000-151-216 Electric Heat Kit, 15 KW - 240V - 3PH 3 ton √ EHXD-3S20 6000-147-320...
  • Page 13 Hold Down Bracket Kit for Competitor's Roofcurb [Restraint Clips Carrier Curb (Curb Bracket Kit)] 3-6 ton √ 0270L01250 MH-DKN12SA-OEM Hold Down Bracket Kit for Daikin Roofcurb [Restraint Clips Daikin Curbs (Curb Bracket Kit)] 3-6 ton √ 0221L00019 CRBK-DKN12FA-14 Roof Curb 14" Tall Seismic with Hold Down Brackets, Knocked Down 3-6 ton √...
  • Page 14 ACCESSORIES ROOF CURBS 14CURB3672 *EXPLODED VIEW OF 0221L00019 *MODEL OF 0221L00020 Part Number Description Models 0221L00014 Small Roof Curb 3 - 5 Ton 70 3/4" 42 5/8" 14" 0221L00015 Small Roof Curb 3 - 5 Ton 70 3/4" 42 5/8" 24" 0221L00019 14"...
  • Page 15 3 - 5 Ton 0270L01759 Horizontal Economizer UL LEAK JADE ENTHALPY SENSOR, 39" cabinet 3 - 5 Ton MIXED AIR SENSOR SHIPS LOOSE IF DRYB-BULB/ENTHALPY APPLICABLE. MOUNTS INSIDE DAIKIN UNIT. SENSOR IF APPLICABLE FILTER PANEL ACTUATOR CONTROLLER IF APPLICABLE HOOD SHIPPED FULLY ASSEMBLED...
  • Page 16 0270L01158 Vertical Economizer Ultra Low-Leak JADE Dry-Bulb 3-6 ton CONTROLLER IF MIXED AIR SENSOR SHIPS LOOSE IF APPLICABLE APPLICABLE. MOUNTS INSIDE DAIKIN UNIT. DRYB-BULB/ENTHALPY SENSOR IF APPLICABLE *0270L01158 *This is a Field Installed Kit METAL MESH FILTER PACKAGE HOOD INSIDE THE...
  • Page 17 ACCESSORIES Power Exhaust Part Number Description Models 0270L01167 POWER EXHAUST PROP VERTICL ECNMZR, 1 PHASE, 230 V 3 - 5 Ton 0270L01170 POWER EXHAUST PROP HORIZNTL ECNMZR, 1 PHASE, 230 V 3 - 5 Ton 0270L01168 POWER EXHAUST PROP VERTICL ECNMZR, 1 PHASE, 460 V 3 - 5 Ton 0270L01171 POWER EXHAUST PROP HORIZNTL ECNMZR, 1 PHASE, 460 V 3 - 5 Ton...
  • Page 18 ACCESSORIES HAIL GUARD KIT Hail Guard Kit Part Number Description Models HAILGD036HE Condenser Coil Hail Guards, 39" cabinet 3 - 5 Ton HAILGD036HEFI Condenser Coil Hail Guards, 39" cabinet, Factory Installed 3 - 5 Ton *HAILGD036HE is Field Installed Kit *HAILGD036HEFI is Factory Installed...
  • Page 19 ACCESSORIES FLUE EXTENSION KIT Flue Extension Kit Part Number Description Models HEFLUE036 Flue Extension, 39" cabinet (Gas only) 3 - 5 Ton (Gas Only) 27 1/2"...

  • Page 20: System Operation

    SYSTEM OPERATION...
  • Page 21 SYSTEM OPERATION DRC/DRG*****XXXXXXXXXXXXXX Typical Package Cooling or Package Gas 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. 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 22 SYSTEM OPERATION DRH*****XXXXXXXXXXXXXX Typical Heat Pump System in Cooling Reversing Valve (Energized) Indoor Outdoor Coil Coil Accumulator Typical Heat Pump System in Heating Reversing Valve (De-Energized) Indoor Outdoor Coil Coil Accumulator...
  • Page 23 SYSTEM OPERATION DRG*****XXXXXXXXXXXXXX Direct Spark Ignition (DSI) Systems DRG units are equipped with a direct spark ignition system. WARNING Ignition is provided by 22,000 volt electronic spark. A flame sensor then monitors for the presence of flame and closes HIGH VOLTAGE Disconnect all power before servicing the gas valve if flame is lost.
  • Page 24 SYSTEM OPERATION Pre-Installation Checks • To avoid possible corrosion of the heat exchanger, do Carefully read all instructions for the installation prior not locate the unit in an area where the outdoor air to installing unit. Ensure each step or procedure is (i.e.
  • Page 25 SYSTEM OPERATION • As indicated on the unit data plate, a minimum WARNING clearance of 36” to any combustible material is required on the furnace access side of the unit. All combustible materials must be kept out of this area. To prevent possible equipment damage, property damage, personal injury or death, the following bullet points •...
  • Page 26 SYSTEM OPERATION CLEARANCES 24" MIN. 24" MIN. 36” MIN. Roof Curb Installation Unit Clearances ROOF CURB POST-INSTALLATION CHECKS *In situations that have multiple units, a 36” minimum clearance is required between the condenser coils. After installation, check the top of the curb, duct connection frame and duct flanges to make sure gasket has Adequate clearance around the unit should be kept for been applied properly.
  • Page 27 SYSTEM OPERATION • Two spreader bars must span over the unit to prevent damage to the cabinet by the lift cables. Spreader bars must be of sufficient length so that cables do not come in contact with the unit during transport. Remove wood struts mounted beneath unit base frame before setting unit on roof curb.
  • Page 28 SYSTEM OPERATION WEIGHTS AND CENTER OF GRAVITY ELECTRICAL WIRING WARNING CONDENSER COIL HIGH VOLTAGE! RETURN Disconnect all power before servicing or installing this unit. Multiple power EVAPORATOR COIL sources may be present. Failure to do so may cause property damage, personal injury or death.
  • Page 29 SYSTEM OPERATION NOTE: If supply voltage is 208V, lead on primary of transformer(s) must be moved from the 230V to the 208V tap. Refer to wiring diagram on unit for details. Main power wiring should be sized for the minimum circuit ampacity shown on the unit’s dataplate.
  • Page 30 SYSTEM OPERATION HIGH VOLTAGE ENTRANCE NOTE: Field-supplied conduit may need to be installed (REMOVE PLUG) depending on unit/curb configuration. Use #18 AWG solid conductor wire whenever connecting thermostat wires to terminals on sub-base. DO NOT use larger than #18 19-3/8 AWG wire.
  • Page 31 SYSTEM OPERATION The minimum supply pressure should not vary from that 5. Use two pipe wrenches when making connection to shown in the table above because this could prevent the the gas valve to keep it from turning. unit from having dependable ignition. In addition, gas 6.
  • Page 32 SYSTEM OPERATION Gas Piping Checks All propane gas equipment must conform to the safety standards of NFPA 58 - Liquefied Petroleum Gas Code. CAUTION For satisfactory operation, propane gas pressure must be To prevent property damage or personal injury due to within 9.7 - 10.3 inches w.c.
  • Page 33 SYSTEM OPERATION 6. All pipe connections should be sealed with a pipe A manual gas shut off valve must be field installed external thread compound, which is resistant to the fuel used to the roof top unit. In addition, a drip leg must be with the furnace.
  • Page 34 SYSTEM OPERATION Cleaning CONDENSATE DRAIN CONNECTION Due to the fact that drain pans in any air conditioning unit will have some moisture in them, algae and fungus Condensate Drain Connection will grow due to airborne bacteria and spores. Periodic A 3/4” female NPT drain connection is supplied on the end cleaning is necessary to prevent this build-up from of the unit and bottom of the drain pan for condensate plugging the drain.
  • Page 35 SYSTEM OPERATION Check unit operation as outlined in the following Obstructions, Fan Clearance and Wiring instructions. If any sparking, odors, or unusual sounds are Remove any extraneous construction and shipping encountered, shut off electrical power and recheck for materials that may be found during this procedure. Rotate wiring errors, or obstructions in or near the blower motors.
  • Page 36 SYSTEM OPERATION Purple wire Y2 (High Cool) and Brown wire W2 (High Three Phase Models Only Heat) are connected to TB1-T3. These wires can be moved 2) MAXIMUM VOLTAGE DEVIATIONS together or separately and placed on unoccupied terminal 3) PERCENT VOLTAGE FROM AVERAGE VOLTAGE = 100 x UNBALANCE...
  • Page 37 SYSTEM OPERATION The first step in checking out the gas-fired furnace is to Electrical Input Check test the gas supply piping to the unit for tightness and Make preliminary check of evaporator fan ampere draw purge the system of air using methods outlined in the and verify that motor nameplate amps are not exceeded.
  • Page 38 SYSTEM OPERATION Number INLET GAS PRESSURE High Fire LP Orifice Rate Orifice NATURAL Mi n. 5.0" W.C., Ma x. 10.0" W.C. Burners 45,000 PROPANE Mi n. 11.0" W.C., Ma x. 13.0" W.C. 70,000 NOTE: Inlet gas pressure must be within limits shown 115,000 above.
  • Page 39 SYSTEM OPERATION Gas Input (Natural Gas Only) Check It is the responsibility of the contractor to adjust the gas High Fire Regulator input to the unit. Adjust (Under Cap Screw) Regulator Vent To measure the gas input use a gas meter and proceed as follows: Gas Flow 1.
  • Page 40 SYSTEM OPERATION NOx Screen Check 4. Operation of the venter motor closes the pressure Verify that the alignment of the NOx screens is at 6 switch PS located in the burner compartment. Unless o’ clock. In jurisdictions that do not require low NOx excessive temperatures or shipping shock have emissions, NOx screens may be removed.
  • Page 41 SYSTEM OPERATION To confirm charge levels or, if a leak occurs and charge Automatic Reset High Limit Control (LS) needs to be added to the system, it is recommended to Located in the burner compartment on the heat exchanger, evacuate the system and recharge refrigerant to the unit’s its sensing element projects through the blower section nameplate specifications.
  • Page 42 SYSTEM OPERATION 5. Compressor contactor closes its contacts to provide Final System Checks power to the compressor motor. In addition, the 1. Check to see if all supply and return air grilles are condenser fan motor is energized through the adjusted and the air distribution system is balanced compressor contactor.

  • Page 43: Servicing Table Of Contents

    SERVICING TABLE OF CONTENTS SERVICING TABLE OF CONTENTS S-1 Checking Voltage ..........46 S-101 Leak Testing S-2 Checking Wiring ..........47 (nitrogen or nitrogen-traced) ......58 S-3 Checking Thermostat, Wiring, And S-102 Evacuation ..........58 Anticipator............47 S-103 Charging ............. 59 S-3A Thermostat and Wiring .......

  • Page 44: Servicing

    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 45 SERVICING GAS HEATING ANALYSIS CHART Complaint No Heat Unsatisfactory Heat POSSIBLE CAUSE Test Method DOTS IN ANALYSIS Remedy GUIDE INDICATE "POSSIBLE CAUSE" • Power Failure Test Voltage • Blown Fuse Test Voltage • Loose Connection Check Wiring S-2, S-3 • Shorted or Broken Wires Check Wiring S-2, S-3...

  • Page 46: Checking Voltage

    SERVICING S-1 Checking Voltage Unit Supply Voltage Voltage Min. Max. 208/230 HIGH VOLTAGE! Disconnect ALL power before servicing or installing this unit. Multiple power sources may be present. Failure to do so Three phase units require a balanced 3 phase power may cause property damage, personal injury supply to operate.

  • Page 47: Checking Wiring

    SERVICING S-3 Checking Thermostat, Wiring, And Anticipator THERMOSTAT WIRE SIZING CHART MIN. COPPER WIRE LENGTH OF RUN GAUGE (AWG) 25 feet L1 - L2 = 240V 50 feet L1 - L3 = 227V 75 feet L2 - L3 = 238V 100 feet 125 feet 150 feet...

  • Page 48: S-3C Heating Anticipator

    SERVICING S-3C Heating Anticipator 1. Remove control panel cover to gain access to transformer. The heating anticipator is a wire-wound adjustable heater, With power ON: which is energized during the “ON” cycle to help prevent overheating of the conditioned space. WARNING Line Voltage now present.

  • Page 49: Checking Contactor Contacts

    SERVICING S-8 Checking Contactor Contacts SINGLE PHASE VOLT/OHM METER HIGH VOLTAGE! Disconnect ALL power before servicing or installing this unit. Multiple power Ohmmeter for testing holding coil sources may be present. Failure to do so Voltmeter for testing contacts may cause property damage, personal injury or death.

  • Page 50: Checking Loss Of Charge Protector

    SERVICING 4. Using a VOM, check for 240 volts from terminals 3 2. Check for 24 volts at the C and G terminals of the and 1 of relay. Should read 240 volts. In no voltage, EBTDR. check wiring from heater kit to relay. If voltage 3.

  • Page 51: Checking High Pressure Control

    SERVICING S-12 Checking High Pressure Control S-13 Checking Low Pressure Control The low pressure control senses the pressure in the suction line and will open its contacts on a drop in pressure. The low pressure control will automatically reset itself with a HIGH VOLTAGE! rise in pressure.

  • Page 52: S-15A Resistance Check

    SERVICING Models Equipped With A Hard Start Device A start capacitor is wired in parallel with the run capacitor to increase the starting torque. The start capacitor is of the electrolytic type, rather than metallized polypropylene as used in the run capacitor. OHMMETER A switching device must be wired in series with the capacitor to remove it from the electrical circuit after the...

  • Page 53: Checking Motors

    SERVICING 1. Using a voltmeter, check for 230 volts to the motor WARNING connections L and N. If 230 volts is present, proceed Discharge capacitor through a 20 to 30 OHM to step 2. If 230 volts is not present, check the line resistor before handling.

  • Page 54: Checking Compressor Windings

    SERVICING S-17A Resistance Test S-17 Checking Compressor Windings Each compressor is equipped with an internal overload. WARNING The line break internal overload senses both motor Hermetic compressor electrical terminal venting can amperage and winding temperature. High motor be dangerous. When insulating material which temperature or amperage heats the disc causing it to supports a hermetic compressor or electrical terminal open, breaking the common circuit within the compressor...

  • Page 55: S-17B Ground Test

    SERVICING S-17B Ground Test WARNING If fuse, circuit breaker, ground fault protective device, etc., Damage can occur to the glass embedded terminals if has tripped, this is a strong indication that an electrical the leads are not properly removed. This can result in problem exists and must be found and corrected.

  • Page 56: Checking Reversing Valve And Solenoid

    SERVICING 3. Check the temperature at which the control opens 6. Using VOM check for voltage across fan terminals DF1 its contacts by raising the temperature of the control. and DF2 on the board. You should read line voltage The crankcase heater thermostat should open at 85°F (208-230 VAC) indicating the relay is open in the ±...

  • Page 57: Checking Heater Limit Control(S)

    SERVICING 1. Remove the wiring from the control terminals. Undercharge 2. Using an ohmmeter test for continuity across the An undercharged heat pump on the heating cycle will normally closed contacts. No reading indicates the cause low discharge pressure resulting in low suction control is open - replace if necessary.

  • Page 58: Leak Testing (Nitrogen Or Nitrogen-Traced)

    SERVICING S-102 Evacuation 6. When brazing, sweep the tubing with dry nitrogen to prevent the formation of oxides on the inside surfaces. WARNING 7. Complete any repair by replacing the liquid line drier REFRIGERANT UNDER PRESSURE! in the system, evacuate and charge. Failure to follow proper procedures may cause property damage, personal injury or death.

  • Page 59: Charging

    SERVICING Only use refrigerant certified to AHRI standards. Used LOW SIDE HIGH SIDE refrigerant may cause compressor damage. The GAUGE GAUGE manufacturer is not responsible for damage or the AND VALVE AND VALVE need for repairs resulting from the use of unapproved refrigerant typesor used or recycled refrigerant.

  • Page 60: Checking Compressor Efficiency

    SERVICING S-106 Overfeeding NOTE: Check that the air flow is correct before adjusting Overfeeding by the expansion valve results in high suction charge. pressure, cold suction line, and possible liquid slugging of 5. With the system still running, remove hose and the compressor.

  • Page 61: Checking Subcooling

    SERVICING 5. The difference between the thermometer reading and Ambient Condenser pressure to temperature conversion is the amount of Return Air Temp. (°F Drybulb) Inlet Temp subcooling. (°F Drybulb) Add charge to raise subcooling. Recover charge to lower subcooling. Subcooling Formula = Sat. Liquid Temp. - Liquid Line Temp. EXAMPLE: A.
  • Page 62 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 -34.7 116.0 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 63 SERVICING SUBCOOLING REQUIRED LIQUID LINE TEMPERATURE LIQUID PRESSURE REQUIRED SUBCOOLING TEMPERATURE (°F) AT ACCESS FITTING (PSIG)

  • Page 64: Fixed Orifice Restriction Devices

    SERVICING S-111 Fixed Orifice Restriction Devices Discharge and suction pressures will be low, giving the The fixed orifice restriction device (flowrator) used in appearance of an undercharged unit. However, the unit conjunction with the indoor coil is a predetermined bore will have normal to high subcooling.

  • Page 65: Compressor Burnout

    NOTE: Daikin does NOT approve the flushing method to be pulled off the evaporator coil causing condensate using R-11 refrigerant.

  • Page 66: Checking Temperature Rise

    SERVICING 4. For gas heat units, the airflow must be adjusted so that the air temperature rise falls within the ranges given stated on Data Plate by adjusting the variable pitch sheave on the motor (see Blower Performance section in appropriate Spec Sheet Manual for correct pulley adjustment).

  • Page 67: Testing Auxiliary Limit

    SERVICING It is connected in series with the rollout switch wiring to the gas valve. If its temperature should be exceeded, it will open, interrupting the voltage to the gas valve causing it to open. An additional limit (primary limit) control is required for safety control of high temperature within the furnace or ductwork.

  • Page 68: Checking Flame Rollout Switch

    SERVICING Limit Switch Operation (Applies to Primary, Auxiliary, and Roll Out Limits) DSI systems. If a limit switch opens, the indoor blower is energized on heat speed and the induced draft blower is energized. The LED on the control flashes “4” to indicate an open limit switch.

  • Page 69: Testing Inducer Motor

    SERVICING 5. Look under the heat shield as the unit is running. Flames should be drawn into firing tubes. HIGH VOLTAGE! A. If only one burners flame is not drawn into the Disconnect ALL power before servicing tube, that tube is restricted. or installing this unit.

  • Page 70: Checking Orifices

    SERVICING Orifices should be treated with care in order to prevent damage. They should be removed and installed with a box- WARNING end wrench in order to prevent distortion. In no instance Disconnect gas and electrical power supply. should an orifice be peened over and redrilled. This will change the angle or deflection of the vacuum effect or entraining of primary air, which will make it difficult to In checking main burners, look for signs of rust, oversized...

  • Page 71: Checking For Delayed Ignition

    SERVICING Measuring Inlet And Manifold Gas Pressure If operating pressures differ from chart, make necessary pressure regulator adjustments, check piping size, etc., and/or consult with local utility. OUTLET (MANIFOLD) PRESSURE MANOMETER S-308 Checking For Delayed Ignition (FIELD SUPPLIED) NOTE! Delayed ignition is a delay in lighting a combustible mixture MANIFOLD PRESSURE IS TO BE BETWEEN of gas and air which has accumulated in the combustion...

  • Page 72: High Altitude Application

    SERVICING Pressure Switch Operation (DSI Direct Spark System) With Power ON: The pressure switch is ignored unless there is a call for WARNING heat. When the control receives a call for heat, the control Line Voltage now present. checks to see that the pressure switch is open. If the control sees that the pressure switch is closed before the induced draft blower is energized, the LED will flash a code 4.

  • Page 73: Testing Ignition Control Module

    SERVICING For propane conversion above 2,000 feet, high altitude kit Blower Off Delay Settings HAKT036150 is required in addition to propane conversion kit LPHE-036072. speed up COOL HEAT UNUSED 20,000 BTUH NAT/20,000 BTUH/L.P. HIGH ALTITUDE INPUT/BURNER ELEVATION ABOVE SEA-LEVEL (FEET) 2000 3000 4000 4500 5000 6000 7000 8000 U.S.
  • Page 74 SERVICING TROUBLESHOOTING • Check secondary limit A dirty filter, excessive duct static, insufficient air flow, a faulty limit, or a failed circulator blower can cause this Ignition Control Error Codes limit to open. Check filters, total external duct static, The following presents probable causes of questionable circulator blower motor, blower motor speed tap (see wiring diagram), and limit.

  • Page 75: Checking Flame Sensor

    SERVICING Open Thermal Protection Device (4 FLASH CODE) DSI Direct Spark Ignition Systems If the primary limit switch opens, the gas valve is immediately deenergized, the induced draft and air circulating blowers are energized. The induced draft and HIGH VOLTAGE! air circulator blowers remain energized until the limit Disconnect ALL power before servicing switch recloses.
  • Page 76 SERVICING 9. If the microamp reading is less than the minimum specified, check for high resistance wiring connections, the distance (3/16”) between the sensor and burner, flame sensor connections, dirty flame sensor or poor grounding. 10. If no reading, check for continuity on all components and if good - replace ignition control module.

  • Page 77: Unit Wiring Diagram

    UNIT WIRING DIAGRAMS UNIT WIRING DIAGRAMS DRC036-060, 1PH Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
  • Page 78 UNIT WIRING DIAGRAMS UNIT WIRING DIAGRAMS DRH036-060, 1PH Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring. Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
  • Page 79 UNIT WIRING DIAGRAMS DRC036-072, 3PH Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
  • Page 80 UNIT WIRING DIAGRAMS DRH036-072, 3PH Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
  • Page 81 UNIT WIRING DIAGRAMS UNIT WIRING DIAGRAMS DRC036-072, 3PH (HI STATIC) Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
  • Page 82 UNIT WIRING DIAGRAMS DRH036-072, 3PH HI STATIC Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
  • Page 83 UNIT WIRING DIAGRAMS DRG036-060, 1PH Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
  • Page 84 UNIT WIRING DIAGRAMS DRG036-072, 3PH Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
  • Page 85 UNIT WIRING DIAGRAMS UNIT WIRING DIAGRAMS DRG036-072, 3PH HI STATIC Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.

  • Page 86: Accessories Wiring Diagram

    ACCESSORIES WIRING DIAGRAMS ECONOMIZER Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
  • Page 87 ACCESSORIES WIRING DIAGRAMS POWERED CONV. OUTLET Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
  • Page 88 ACCESSORIES WIRING DIAGRAMS POWERED CONV. OUTLET Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
  • Page 89 ACCESSORIES WIRING DIAGRAMS POWERED CONV. OUTLET Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
  • Page 90 ACCESSORIES WIRING DIAGRAMS power exhaust 3 - 5 Ton Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
  • Page 91 ACCESSORIES WIRING DIAGRAMS Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
  • Page 92 ACCESSORIES WIRING DIAGRAMS PACKAGE SYSTEM WIRING DIAGRAM - 1 STAGE ELECTRIC HEAT TYPICAL HP ROOM THERMOSTAT SEE NOTE 1 #18 GAUGE 7 WIRE PACKAGE UNIT REQUIRED FOR LOW VOLTAGE HEAT PUMPS JUNCTION BOX YELLOW GREEN ORANGE WHITE BLUE OUTDOOR THERMOSTAT CLOSE ON TEMPERATURE FALL PACKAGE SYSTEM WIRING DIAGRAM - 2 STAGE ELECTRIC HEAT ABOVE 10 KW...
  • Page 93 ACCESSORIES WIRING DIAGRAMS PACKAGE SYSTEM WIRING DIAGRAM - HEAT PUMPS ONLY! TWO-STAGE ELECTRIC HEAT ABOVE 10 kW TYPICAL H/P ROOM THERMOSTAT #18 GAUGE 8 WIRE PACKAGE HEAT PUMP YELLOW GREEN OUTDOOR THERMOSTAT #2 (IF USED, SEE NOTE 1) ORANGE WHITE BROWN BLUE OUTDOOR THERMOSTAT #1...
  • Page 94 ACCESSORIES WIRING DIAGRAMS CONNECT PARALLEL TO REVERSING VALVE 24 VAC ( IF USED ) SEE NOTE 2 ( IF USED ) SEE NOTE 3 CAPACITOR CONNECT TO TERMINAL BLOCK Y (CALL FOR COOL) BL (COMMON) RETURN BEND END OF CONDENSER COIL SENSOR NOTES: 1.
  • Page 95 ACCESSORIES WIRING DIAGRAMS 24V AC/DC 24V AC/DC AUX OUT + AUX OUT - INT/AUX - INT + ALARM R TEST R RESET OFF/ON TRBL SHUTDN 1/2 SENSORS 7/0 MIN TMPR DELAY SMOKE DETECTOR Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
  • Page 96 ACCESSORIES WIRING DIAGRAMS Disconnect Module Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
  • Page 97 ACCESSORIES WIRING DIAGRAMS PHASE MONITOR - DBC/DBH MODELS Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
  • Page 98 ACCESSORIES WIRING DIAGRAMS Phase Monitor - DBG Model Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.

  • Page 99: Heater Kits

    HEATER KITS DRC/H *****XXXXXXXXXXXXXX Heater Kits for Direct Drive Models Minimum Airflow for Electric Heat Direct Drive Part Number Description Unit Heater Kit Model Number Minimum CFM EHXD-1S05 ELECTRIC HEAT KIT 5KW - 240V - 1PH EHXD-1S05 DBC0361D EHXD-1S10 ELECTRIC HEAT KIT 10KW - 240V - 1PH EHXD-1S10 DBH0361D EHXD-1S15...

  • Page 100: Heater Kits Wiring Diagram

    HEATER KIT WIRING DIAGRAMS EHK1-10 EHSD-1S05, EHSD-1S10 * For Direct Drive Models Only Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
  • Page 101 HEATER KIT WIRING DIAGRAMS EHK1-15 EHXD-1S05, EHXD-1S10 * For Direct Drive Models Only Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
  • Page 102 HEATER KIT WIRING DIAGRAMS EHK1-18 TSTAT (-)GND (+)VDC (+)mA EHSD-1S15, EHSD-1S18, EHSD-1S20 *For Direct Drive Models Only Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
  • Page 103 HEATER KIT WIRING DIAGRAMS EHK1-20 EHXD-1S15, EHXD-1S18, EHXD-1S20 *For Direct Drive Models Only Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
  • Page 104 HEATER KIT WIRING DIAGRAMS EHK*-10/EHK*-15/EHK*-16 EHS*-3S05, EHS*-3S10, EHS*-3S15 Direct Drive Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
  • Page 105 HEATER KIT WIRING DIAGRAMS EHK[3, 4]-18 EHX*-3S05, EHX*-3S10, EHX*-3S15 Direct Drive Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
  • Page 106 HEATER KIT WIRING DIAGRAMS EHK[3, 4, 7]-20 & 25 TSTAT (-)GND (+)VDC (+)mA EHS*-3S18, EHS*-3S20, EHS*-3S30 Direct Drive Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
  • Page 107 HEATER KIT WIRING DIAGRAMS EHK1-15 EHX*-3S18, EHX*-3S20, EHX*-3S30 Direct Drive Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
  • Page 108 HEATER KIT WIRING DIAGRAMS EHK*-10/EHK*-15 EHS*-4S05, EHS*-4S10, EHS*-4S15, EHS*-7S05, EHS*-7S10, EHS*-7S15 Direct Drive Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
  • Page 109 HEATER KIT WIRING DIAGRAMS EHX*-4S05, EHX*-4S10, EHX*-4S15, EHX*-7S05, EHX*-7S10, EHX*-7S15 Direct Drive Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
  • Page 110 HEATER KIT WIRING DIAGRAMS TSTAT (-)GND (+)VDC (+)mA EHS*-4S18, EHS*-4S20, EHS*-4S30, EHS*-7S18, EHS*-7S20, EHS*-7S30 Direct Drive Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
  • Page 111 HEATER KIT WIRING DIAGRAMS EHX*-4S18, EHX*-4S20, EHX*-4S30, EHX*-7S18, EHX*-7S20, EHX*-7S30 Direct Drive Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.

  • Page 112: Scheduled Maintenance

    SCHEDULED MAINTENANCE MAINTENANCE 7. Check operating temperatures and pressures. 8. Check and adjust temperature and pressure controls. 9. Check and adjust damper linkages. WARNING 10. Check operation of all safety controls. 11. Examine gas furnaces (see below and the User’s ELECTRICAL SHOCK, FIRE OR EXPLOSION HAZARD Information Manual).
  • Page 113 SCHEDULED MAINTENANCE Flame Sensor (Qualified Servicer Only) Flames should be stable, soft and blue (dust may cause A drop in the flame current can be caused by a nearly orange tips but must not be yellow). The flames must invisible coating on the flame sensor. This coating, created extend directly outward from the burner without curling, by the fuel or combustion air supply, can be removed by floating or lifting off.

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