Daikin DBG Series Installation Instructions Manual
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Daikin DBG Series Installation Instructions Manual

Packaged gas / electric unit 7.5-12.5 ton belt drive
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Packaged Gas / Electric Unit 7.5-12.5 Ton Belt Drive
Light Commercial DBG Models
Installation Instructions
This forced air central unit design complies with
requirements embodied in The American National Standard
/ National Standard of Canada ANSI Z21.47•CSA-2.3 Gas-
fired central furnaces.
©2020
IOD-1045A
04/20
Our continuing commitment to quality products may mean a change in specifications without notice.
19001 Kermier Rd., Waller, TX 77484
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 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.
www.daikincomfort.com
INSTALLATION INSTRUCTIONS
WARNING
PROP 65 WARNING
FOR CALIFORNIA CONSUMERS
WARNING
Cancer and Reproductive Harm -
www.P65Warnings.ca.gov
0140M00517-A

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Summary of Contents for Daikin DBG Series

  • Page 1 INSTALLATION INSTRUCTIONS Packaged Gas / Electric Unit 7.5-12.5 Ton Belt Drive Light Commercial DBG Models Installation 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.

  • Page 2: Table Of Contents

    Electrical wiring ............10 gas supply piping ............13 EQUIPMENT SUPPORT Propane gas installations ........15 Daikin North America LLC Circulating Air and Filters ........16 19001 Kermier Road Venting ................16 Waller, Texas 77484 Condensate Drain Connection .........
  • Page 3 WARNING WARNING FIRE OR EXPLOSION HAZARD To avoid property damage, personal injury or death, do not use this unit if any part has been Failure to follow the safety warnings exactly could result in under water. Immediately call a qualified service serious injury, death or property damage.
  • Page 4 WARNING CARBON MONOXIDE POISONING HAZARD Failure to follow the steps outlined below for each appliance connected to the venting system being placed into operation could result in carbon monoxide poisoning or death. The following steps shall be followed with each appliance connected to the venting system placed in operation, while any other appliances connected to the venting system are not in CARBON MONOXIDE POISONING HAZARD...

  • Page 5: General Information

    à l’horizontale sont conformes aux exigences du National Fuel Gas Code, ANSI Z223.1/NFPA 54 ou at www.daikinac.com for Daikin brand products. Within du Code d’installation du gaz naturel et du propane, CSA B149.1 the website, please select the residential or commercial et à...
  • Page 6 Obtain from: American National Standards Institute WARNING www.ansi.org System design and installation should also, where To prevent possible equipment damage, property applicable, follow information presented in accepted damage, personal injury or death, the following industry guides such as the ASHRAE Handbooks. The bullet points must be observed when installing the unit.
  • Page 7 • Allow minimum clearances from the enclosure for • Do not skid or slide on any surface as this may fire protection, proper operation, and service access damage unit base. The unit must be stored on a flat, (see unit clearances). These clearances must be level surface.

  • Page 8: Clearances

    See the manual shipped with the roof curb for assembly and installation instructions. CLEARANCES Roof Curb Installation ROOF CURB POST-INSTALLATION CHECKS After installation, check the top of the curb, duct connection frame and duct flanges to make sure gasket has been applied properly.

  • Page 9: Rigging Details

    • 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 10: Weights And Center Of Gravity

    DBG Weights (lbs) Data Corner Weight- A Corner Weight- B Corner Weight- C Corner Weight- D Unit Shipping Weight 1175 1186 1230 1368 Unit Operating Weight 1095 1106 1150 1288 X (Inches) Y (Inches) The numbers may slightly vary depending on installed options.
  • Page 11 Main power wiring should be sized for the minimum circuit ampacity shown on the unit’s database. Size wires in WARNING accordance with the ampacity tables in Article 310 of the National Electrical Code. If long wires are required, it HIGH VOLTAGE! may be necessary to increase the wire size to prevent To avoid personal injury or death due to electrical shock, do not...
  • Page 12 Units installed on Roof Tops Main power and low voltage wiring may enter the unit through the condenser end of unit or through the roof curb. Install conduit connectors at the desired entrance locations. External connectors must be weatherproof. All holes in the unit base must be sealed (including those around conduit nuts) to prevent water leakage into building.

  • Page 13: Gas Supply Piping

    3. Use #18 AWG wire for 24V control wiring runs not The rating plate is stamped with the model number, type of exceeding 75 feet. Use #16 AWG wire for 24V control gas and gas input rating. Make sure the unit is equipped wiring runs not exceeding 125 feet.
  • Page 14 Natural Gas Connection Natural Gas Capacity of Pipe in Cubic Feet of Gas Per Hour (CFH) Length of Nominal Black Pipe Size (inches) Pipe in Feet 1 1/4 1 1 /2 1050 1600 1100 Pressure= .50 PSIG or less and Pressure Drop of 0.3" W.C. (Based on 0.60 Specific Gravity Gas) BTUH Furnace Input CFH =...

  • Page 15: Propane Gas Installations

    Tanks and Piping Complete information regarding tank sizing for WARNING vaporization, recommended regulator settings and pipe sizing is available from most regulator manufacturers and To avoid property damage or personal injury, be propane gas suppliers. sure there is no open flame in the vicinity during air bleeding.

  • Page 16: Circulating Air And Filters

    3. These units are designed for either natural or 7. There must be no obstruction to prevent the flow of propane (LP) gas and are specifically constructed at combustion and ventilating air. A vent stack is not the factory for only one of these fuels. The fuels are required and must never be used.

  • Page 17: Startup, Adjustments, And Checks

    Pre-Startup Instructions - General Base Rail CAUTION Open Vent 2” Min To prevent property damage or personal injury, do not start the unit until all necessary pre- checks and tests have been performed. See NOTE Prior to the beginning of Startup, Adjustments, and Checks procedures, the following steps should be completed in the building.

  • Page 18: Air Flow Adjustments

    Contractor Responsibility System Voltage - That nominal voltage value assigned The installing contractor must be certain that: to a circuit or system for the purpose of designating its • All supply and return air ductwork is in place, properly voltage class. sealed, and corresponds with installation instructions.

  • Page 19: Belt Drive Models Only

    If an economizer is installed, check the unit operating Tension and Alignment Adjustment balance with the economizer at full outside air and at Correct belt tension is very important to the life of your belt. minimum outside air. Upon completion of the air flow Too loose a belt will shorten its life;...

  • Page 20: Gas System Check

    Vl & Vm Sheaves Adjustment 8. Smell for gas, including near the ground. This is 1. Loosen set screw “B” using a 5/32” Allen key. important because some types of gas are heavier 2. Making half or full turns from closed position, adjust than air.
  • Page 21 The pressure regulator on LP gas models is adjusted for Inlet gas pressure can also be measured by removing the 10.0” w.c. manifold pressure and is intended to prevent cap from the dripleg and installing a predrilled cap with a over-firing only.
  • Page 22 To measure the gas input use a gas meter and proceed as To connect manometer to gas valve: follows: 1. Back outlet pressure tap screw (inside inlet pressure 1. Turn off gas supply to all other appliances except the boss) out one turn (counterclockwise, not more than unit.

  • Page 23: Normal Sequence Of Operation

    With a properly designed system, the proper amount of If the third attempt is unsuccessful, the controller temperature rise will normally be obtained when the unit will close the gas valve and lock itself out. It may be is operated at rated input with the recommended blower reset by momentarily interrupting power.
  • Page 24 Refrigeration Sequence Check With the disconnect switch open, remove the field WARNING connected thermostat wire from terminal R on TB1 terminal block. Place a jumper across terminals R and To avoid property damage, personal injury G, and across R and Y on TB1 terminal block. Close the or death due to fire or explosion, a qualified servicer must investigate the reason for the disconnect switch.

  • Page 25: Maintenance

    • Ensure all compressors and the supply fan motor are operating in the proper direction. If WARNING a single motor is operating backwards, check the power wiring for that motor and correct HIGH VOLTAGE! any leads that have been interchanged at the Disconnect all power before servicing or installing this unit.
  • Page 26 Filters WARNING CAUTION HIGH VOLTAGE! Disconnect all power before To prevent property damage due to fire and loss servicing or installing this unit. of equipment efficiency or equipment damage due Multiple power sources may be to dust and lint build up on internal parts, never present.

  • Page 27: Troubleshooting

    Inspection & Cleaning All flue product carrying areas of the furnace, its vent WARNING system, and main burners should be examined by a qualified service agency, and cleaned if necessary, before To avoid personal injury or death due to electric the start of each heating season.
  • Page 28 If flame is established but lost, the control will energize If the pressure switch opens after ignition has begun the the circulator blower at the heat speed and then begin a gas valve is deenergized, the circulator blower heat off new ignition sequence.

  • Page 29: Appendix A Blower Performance Data

    APPENDIX A BLOWER PERFORMANCE DATA 7.5 TON GE DBG090*V STANDARD STATIC HORIZONTAL TURNS OPEN ESP, In H CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP 3557 704 1.13 3274 654 0.95 3689 748 1.22 3351 704 1.04 3065 654 0.86 3501 748 1.14 3129 704 0.95 2833 654 0.77 3563 792 1.32 3282 748 1.04 2891 704 0.85 2577 654 0.68...
  • Page 30 APPENDIX A BLOWER PERFORMANCE DATA 7.5 TON GE DBG090*V STANDARD STATIC DOWNSHOT TURNS OPEN ESP, In H CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP 3581 748 1.17 3274 704 1.01 2990 654 0.83 3753 792 1.43 3386 748 1.09 3068 704 0.92 2781 654 0.75 3473 792 1.28 3195 748 1.00 2845 704 0.83 2548 654 0.67 3612 840 1.75 3284 792 1.18 3027 748 0.94 2606 704 0.75...
  • Page 31 APPENDIX A BLOWER PERFORMANCE DATA 8.5 TON GE DBG102*V STANDARD STATIC HORIZONTAL TURNS OPEN ESP, In CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP 4236 751 1.50 3970 705 1.33 3673 655 1.12 4073 751 1.41 3780 705 1.24 3478 655 1.04 4123 797 1.63 3888 751 1.32 3568 705 1.14 3244 655 0.94 3948 797 1.53 3681 751 1.22 3334 705 1.03 2972 655 0.83...
  • Page 32 APPENDIX A BLOWER PERFORMANCE DATA 8.5 TON GE DBG102*V STANDARD STATIC DOWNSHOT TURNS OPEN ESP, In CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP 3832 797 1.47 3581 751 1.17 3274 705 1.01 2990 655 0.83 3926 840 1.96 3753 797 1.43 3386 751 1.09 3068 705 0.92 2781 655 0.75 3782 840 1.86 3473 797 1.28 3195 751 1.00 2845 705 0.83 3612 840 1.75 3284 797 1.18 3027 751 0.94...
  • Page 33 APPENDIX A BLOWER PERFORMANCE DATA 10 TON GE DBG120*V STANDARD STATIC HORIZONTAL TURNS OPEN ESP, In CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP 4350 744 1.56 4050 700 1.21 3750 652 1.06 4223 744 1.49 3923 700 1.16 3623 652 1.01 4084 744 1.42 3784 700 1.10 3484 652 0.96 4234 800 1.97 3934 744 1.35 3634 700 1.04 3334 652 0.90...
  • Page 34 APPENDIX A BLOWER PERFORMANCE DATA 10 TON GE DBG120*V STANDARD STATIC DOWNSHOT TURNS OPEN ESP, In CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP 4150 800 1.91 3850 744 1.31 3550 700 1.01 3250 652 0.87 4023 800 1.84 3723 744 1.24 3423 700 0.96 4184 834 1.96 3884 800 1.75 3584 744 1.18 3284 700 0.91 4034 834 1.87 3734 800 1.67 3434 744 1.11...
  • Page 35 APPENDIX A BLOWER PERFORMANCE DATA 12.5 TON GE DBG150*V STANDARD STATIC HORIZONTAL TURNS OPEN ESP, In CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP 5170 867 2.65 4876 823 2.41 4612 780 1.73 4283 732 1.52 3967 689 1.17 5036 867 2.56 4735 823 2.31 4451 780 1.64 4107 732 1.42 5201 908 2.99 4889 867 2.46 4578 823 2.20 4271 780 1.55 5051 908 2.87 4730 867 2.35 4404 823 2.09 4072 780 1.44...
  • Page 36 APPENDIX A BLOWER PERFORMANCE DATA 12.5 TON GE DBG150*V STANDARD STATIC DOWNSHOT TURNS OPEN ESP, In CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP 5182 909 2.97 4921 869 2.72 4672 826 2.27 4354 781 1.59 4048 737 1.40 5047 909 2.86 4784 869 2.61 4506 826 2.16 4179 781 1.50 4901 909 2.75 4630 869 2.50 4327 826 2.05 3987 781 1.40 4744 909 2.63 4461 869 2.37 4136 826 1.93...

  • Page 37: Appendix B Electrical Data

    APPENDIX B ELECTRICAL DATA Electrical Data Optional Powered Optional Electrical Compressor Outdoor Fan Motor Indoor Fan Motor Optional Electric Heat Power Supply Convienience Power Exhaust Model Number Rating Type Part # 42.7/42.7 50/50 speed 9.6/8.7 52.3/51.4 60/60 208/230/ DBG0903S 13.1 83.1 0.33 Belt Drive...
  • Page 38 APPENDIX B ELECTRICAL DATA Electrical Data Optional Powered Optional Electrical Compressor Outdoor Fan Motor Indoor Fan Motor Optional Electric Heat Power Supply Convienience Power Exhaust Model Number Rating Type Part # 45.7/45.7 60/60 speed 9.6/8.7 55.3/54.4 60/60 208/230/ DBG1023S 14.5 0.33 Belt Drive 3/60...
  • Page 39 APPENDIX B ELECTRICAL DATA Electrical Data Optional Powered Optional Electrical Compressor Outdoor Fan Motor Indoor Fan Motor Optional Electric Heat Power Supply Model Number Convienience Power Exhaust Rating Type Part # 49.0/49.0 60/60 speed 9.6/8.7 58.6/57.7 70/70 208/230/ DBG1203S 0.33 Belt Drive 3/60 3.3/3.0...
  • Page 40 APPENDIX B ELECTRICAL DATA Electrical Data Optional Powered Optional Electrical Compressor Outdoor Fan Motor Indoor Fan Motor Optional Electric Heat Power Supply Model Number Convienience Power Exhaust Rating Type Part # 62.2/62.2 80/80 speed 9.6/8.7 71.8/70.9 90/80 208/230/ DBG1503S Belt Drive 3/60 3.3/3.0 65.5/65.2...

  • Page 41: Appendix C Unit Dimensions

    APPENDIX C UNIT DIMENSIONS 54.27" 93.75" 60.36" Horizontal Discharge NOTE NOTE For horizontal discharge, remove supply and return For horizontal discharge, remove supply and return duct cover panels from the end of the unit. Save duct cover panels from the end of the unit. Save all washered screws.

  • Page 42: Appendix D Min-Max Airflow

    APPENDIX D MIN-MAX AIRFLOW RECOMMENDED MIN-MAX AIRFLOW RANGE HIGH FIRE RATE HEATING COOLING UNIT MAXIMUM SCFM BTU/HR MINIMUM SCFM MINIMUM SCFM DBG090 210,000 2250 2360 3690 DBG102 210,000 2550 2680 4230 DBG120 210,000 3000 3150 4860 DBG150 210,000 3750 3940 6070...

  • Page 43: Wiring Diagram

    Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
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  • Page 48 CUSTOMER FEEDBACK Daikin is very interested in all product comments. Please fill out the feedback form on the following link: https://daikincomfort.com/contact-us You can also scan the QR code on the right to be directed to the feedback page. PRODUCT REGISTRATION Thank you for your recent purchase.

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