Daikin DBG Series Installation Instructions Manual Download

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INSTALLATION INSTRUCTIONS

Packaged Gas / Electric Unit 7.5-12.5 Ton Belt Drive

Light Commercial DBG Models

Installation Instructions

IOD-1045A

04/20

Our continuing commitment to quality products may mean a change in specifications without notice.

19001 Kermier Rd., Waller, TX 77484

www.daikincomfort.com

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.

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.

WARNING

PROP 65 WARNING

FOR CALIFORNIA CONSUMERS

Cancer and Reproductive Harm -

www.P65Warnings.ca.gov

0140M00517-A

Summary of Contents for DBG Series

Page 1: ...ould 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 ...

Page 2: ...he information in these instructions is not followed exactly a fire or explosion may result causing property damage personal injury or loss of life do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance Do not touch any electrical switch do not use any phone in your building Imm...

Page 3: ...ur or the gas supply fail to shut off turn off the manual gas shutoff valve external to the furnace before turning off the electrical supply CAUTION Sheet metal parts screws clips and similar items inherently have sharp edges and it is necessary that the installer and service personnel exercise caution WARNING Do not connect to or use any device that is not design certified by the manufacturer for...

Page 4: ...u monoxyde de carbone Si vous devez faire fonctionner ces appareils dans un endroit clos assures vous qu il y ait une ventilation directe provenant de l exterier Cette ventilation est nécessaire pour éviter le danger d intoxication au CO pouvant survenir si un appareil produisant du monoxyde de carbone continue de fonctionner au sein de la zone confinée Les émissions de monoxyde de carbone peuvent...

Page 5: ...ca AVERTISSEMENT RISQUE D INTOXICATION AU MONOXYDE DE CARBONE Si les étapes décrites ci dessous ne sont pas suivies pour chacun des appareils raccordés au système de ventilation au moment de sa mise en marche cela peut entraîner une intoxication au monoxyde de carbone ou la mort Les étapes suivantes doivent être suivies pour chacun des appareils raccordés au système de ventilation au moment de sa ...

Page 6: ...considerations are taken into account before starting installation Assemble all tools hardware and supplies needed to complete the installation Some items may need to be purchased locally WARNING To prevent possible equipment damage property damage personal injury or death the following bullet points must be observed when installing the unit IMPORTANT NOTE Remove wood shipping rails prior to insta...

Page 7: ... Precautions Do not stand or walk on the unit Do not drill holes anywhere in panels or in the base frame of the unit except where indicated Unit access panels provide structural support Do not remove any access panels until unit has been installed on roof curb or field supplied structure Do not roll unit across finished roof without prior approval of owner or architect Do not skid or slide on any ...

Page 8: ...8 minimum clearance is used on the control panel side of a DBG unit a flue extension kit needs be to installed to prevent flue gas recirculation See table below for the kit selection Model size Kit part number 7 5 8 5 10 T HEFLUE090120 12 5 T HEFLUE150 Flue Extension Kits Roof Curb Installation ROOF CURB POST INSTALLATION CHECKS After installation check the top of the curb duct connection frame an...

Page 9: ...ainers and pulling the struts through the base of the unit Refer to rigging label on the unit Your unit may be equipped with a steel shipping brace located underneath the unit under compressors If installing on a roof curb the brace MUST be removed Follow the following instructions for removal CAUTION When unit is suspended boards and shipping brace will drop when screws are removed To prevent per...

Page 10: ...AUTION To prevent severe damage to the bottom of the unit do not fork lift unit after wood struts have been removed Bring condenser end of unit into alignment with the curb first Lower unit carefully onto roof mounting curb When a rectangular cantilever curb is used care should be taken to center the unit Check for proper alignment and orientation of supply and return openings with duct Rigging Re...

Page 11: ...ge 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 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...

Page 12: ...all 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 All required conduit and fittings are to be field supplied Supply voltage to roof top unit must not vary by more than 10 of the value indicated on the unit data plate Phase voltage unba...

Page 13: ... not approved for use in Canada The rating plate is stamped with the model number type of gas and gas input rating Make sure the unit is equipped to operate on the type of gas available Conversion to propane LP gas is permitted with the use of the factory authorized conversion kit see the unit Technical Manual for the appropriate kit For High Altitude derates refer to the latest edition of the Nat...

Page 14: ...ngs Aluminum alloy tubing must not be used in exterior locations Listed gas appliance connectors used in accordance with the terms of their listing that are completely in the same room as the equipment Always use a new listed connector In the prior two methods above the connector or tubing must be protected from physical and thermal damage Aluminum alloy tubing and connectors must be coated to pro...

Page 15: ...tor and the appliance Pipe size required will depend on length of pipe run and total load of all appliances Tanks and Piping Complete information regarding tank sizing for vaporization recommended regulator settings and pipe sizing is available from most regulator manufacturers and propane gas suppliers Since propane gas will quickly dissolve white lead or most standard com mercial compounds speci...

Page 16: ...old pressure WARNING This unit and its individual shutoff valve must be DISCONNECTED from the gas supply system during any pressure testing of that system at test pressures in excess of PSIG 13 8 w c CAUTION This unit must be ISOLATED from the gas supply piping system by closing its individual manual shutoff valve during any pressure testing equal to or less than PSIG 7 There must be no obstructio...

Page 17: ...HAZARD To prevent possible personal injury or death disconnect power to the unit and padlock in the OFF position before servicing fans This unit is equipped with an electronic ignition device to automatically light the main burners It also has a power vent blower to exhaust combustion products On new installations or if a major component has been replaced the operation of the unit must be checked ...

Page 18: ... the unit has been properly grounded during installation Check ground lug connection in main control box for tightness prior to closing circuit breaker or disconnect switch Verify that supply voltage on line side of disconnect agrees with voltage on unit identification plate and is within the utilization voltage range as indicated in Appendix B Electrical Data System Voltage That nominal voltage v...

Page 19: ...ooling from coming on Place a jumper wire across terminals R and G at TB1 terminal block Close disconnect switch evaporator fan motor will operate so RPM can be checked BELT DRIVE MODELS ONLY Refer to Motor Sheave Adjustmens section Bearing Check Prior to energizing any fans check and make sure that all setscrews are tight so that bearings are properly secured to shafts Tension and Alignment Adjus...

Page 20: ...h to the ON position 9 Replace the heat exchanger door on the side of the unit 10 Open the manual gas valve external to the unit 11 Turn on the electrical power supply to the unit 12 Change heating setpoint to desired setting Gas Supply Pressures Regulator Adjustments WARNING Should overheating occur or the gas supply fail to shut off turn off the manual gas shutoff valve external to the unit befo...

Page 21: ...n on all other gas consuming appliances NATURAL Min 5 0 W C Max 10 0 W C PROPANE Min 11 0 W C Max 14 0 W C INLET GAS PRESSURE NOTE Inlet gas pressure must be within limits shown above If operating pressures differ from above make necessary pressure regulator adjustments check piping size etc and or consult with local utility Manifold Pressure Check and Adjustment The gas valve has a pressure tap t...

Page 22: ...s valve 1 Back outlet pressure tap screw inside inlet pressure boss out one turn counterclockwise not more than one turn 2 Attach a hose and manometer to the outlet pressure boss of the valve To remove manometer from gas valve 1 Remove manometer hose from outlet pressure boss 2 Turn outlet pressure tap screw in to seal pressure port clockwise 7 in lb minimum 3 Turn on electrical power and gas supp...

Page 23: ...tempt is unsuccessful If the third attempt is unsuccessful the controller will close the gas valve and lock itself out It may be reset by momentarily interrupting power This may be accomplished by briefly lowering the room thermostat set point below room temperature or by shutting off the main power to the unit 9 Integrated ignition control will close its normally open contacts after a delay of ap...

Page 24: ...re setting to the highest position stopping the unit The indoor blower will continue to run for 60 seconds 9 Turn the thermostat system switch to OFF and disconnect all power when servicing the unit Refrigeration Sequence Check With the disconnect switch open remove the field connected thermostat wire from terminal R on TB1 terminal block Place a jumper across terminals R and G and across R and Y ...

Page 25: ...eratures of 65 F or lower it is recommended that a low ambient kit LAKT is used This is strongly recommended for 2 Speed models due to the lower airflow while in the first stage cooling To further protect the compressor from damage during low ambient conditions a Freezestat Kit FSK01 can be added that turns the compressor off when the evaporator temperature drops too low WARNING HIGH VOLTAGE Disco...

Page 26: ...ever operate unit without an air filter installed in the return air system Every application may require a different frequency of replacement of dirty filters Filters must be replaced at least every three 3 months during operating seasons Dirty filters are the most common cause of inadequate heating or cooling performance Filter inspection should be made at least every two months more often if nec...

Page 27: ...ld develop At least once a year prior to or during the heating season make a visual check of the burner flames NOTE This will involve removing and reinstalling the heat exchanger door on the unit which is held by two screws If you are uncertain about your ability to do this contact a qualified servicer If a strong wind is blowing it may alter the airflow pattern within the unit enough that an insp...

Page 28: ...es an open pressure switch during the pre purge cycle the induced draft blower only will be energized If the pressure switch opens after ignition has begun the gas valve is deenergized the circulator blower heat off cycle begins and the induced draft blower remains on The diagnostic fault code is two flashes Pressure Switch Stuck Closed 3 FLASH CODE A stuck closed pressure switch can be caused by ...

Page 29: ...BG090 S HIGH STATIC HORIZONTAL1 CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP 0 8 3654 941 1 83 3307 900 1 56 0 9 3479 941 1 72 3060 900 1 42 1 0 3705 977 2 05 3305 941 1 61 2813 900 1 28 1 1 3492 977 1 90 3130 941 1 51 2566 900 1 15 1 2 3273 977 1 75 2956 941 1 41 1 3 3567 1002 1 98 3047 977 1 60 2781 941 1 32 1 4 3353 1002 1 83 2816 977 1 46 2607 941 1 23 1 5 3654 1032 ...

Page 30: ...IGH STATIC DOWNSHOT1 CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP 0 8 3371 941 1 65 3023 900 1 40 0 9 3630 977 1 99 3196 941 1 55 2776 900 1 26 1 0 3422 977 1 85 3021 941 1 45 2528 900 1 13 1 1 3681 1002 2 06 3209 977 1 71 2846 941 1 35 1 2 3488 1002 1 92 2989 977 1 57 2671 941 1 26 1 3 3752 1032 2 34 3284 1002 1 79 2763 977 1 43 2497 941 1 17 1 4 3566 1032 2 20 3069 100...

Page 31: ...GH STATIC HORIZONTAL1 CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP 0 8 3958 952 2 25 3632 900 1 95 0 9 4218 1013 2 52 3789 952 2 12 3413 900 1 80 1 0 4053 1013 2 39 3621 952 2 00 3195 900 1 65 1 1 3887 1013 2 27 3453 952 1 89 2976 900 1 52 1 2 3722 1013 2 15 3285 952 1 77 2758 900 1 39 1 3 3557 1013 2 03 3116 952 1 66 1 4 3847 1070 2 85 3391 1013 1 91 2948 952 1 56 1 5 3...

Page 32: ...28 DBG102 S HIGH STATIC DOWNSHOT1 CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP 0 8 4102 1013 2 43 3675 952 2 04 3349 900 1 76 0 9 3936 1013 2 30 3507 952 1 92 3130 900 1 61 1 0 3771 1013 2 18 3338 952 1 81 2911 900 1 48 1 1 3605 1013 2 06 3170 952 1 70 2692 900 1 35 1 2 3905 1070 2 90 3439 1013 1 95 3001 952 1 59 1 3 3735 1070 2 75 3274 1013 1 84 2832 952 1 49 1 4 3565 1...

Page 33: ...65 883 1 97 3816 834 1 74 3516 800 1 54 3216 744 1 02 DBG120 S HIGH STATIC HORIZONTAL1 CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP 0 8 4861 1002 2 83 4392 947 2 42 3724 865 1 89 0 9 4719 1002 2 72 4234 952 2 31 3497 865 1 75 1 0 4562 1007 2 60 4055 952 2 18 3201 865 1 57 1 1 4390 1007 2 47 3854 953 2 05 1 2 4203 1007 2 34 3632 963 1 90 1 3 4000 1007 2 20 3388 963 1 75 1...

Page 34: ...1 38 0 8 3365 883 1 65 3316 834 1 46 DBG120 S HIGH STATIC DOWNSHOT1 CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP 0 8 4092 1004 2 26 3483 961 1 81 0 9 3946 1004 2 16 3321 961 1 71 1 0 4179 1070 3 01 3790 1004 2 06 3173 961 1 62 1 1 4019 1070 2 87 3626 1004 1 95 1 2 3852 1070 2 73 3452 1004 1 84 1 3 3677 1070 2 58 3269 1004 1 73 1 4 3949 1097 3 00 3494 1070 2 44 1 5 3794 1...

Page 35: ...PM BHP CFM RPM BHP 0 8 5457 1013 3 33 5338 991 3 20 4910 949 2 80 0 9 5296 1013 3 19 5160 991 3 05 4728 949 2 66 1 0 5118 1013 3 05 4963 991 2 89 4516 949 2 50 1 1 5578 1071 4 38 4923 1013 2 89 4745 991 2 72 4273 949 2 32 1 2 5551 1091 4 69 5383 1071 4 18 4711 1013 2 72 4507 991 2 54 4001 949 2 13 1 3 5576 1127 4 47 5363 1091 4 47 5174 1071 3 96 4482 1013 2 55 4250 991 2 36 1 4 5405 1127 4 29 5164...

Page 36: ...0 0 9 5921 1071 4 76 5296 1126 3 19 5160 1127 3 05 4728 1128 2 66 1 0 5757 1071 4 58 5118 1127 3 05 4963 1128 2 89 4516 1129 2 50 1 1 5908 1127 4 84 5727 1091 4 91 5578 1071 4 38 4923 1128 2 89 4745 1129 2 72 4273 1130 2 32 1 2 5744 1127 4 65 5551 1091 4 69 5383 1071 4 18 4711 1129 2 72 4507 1130 2 54 4001 1131 2 13 1 3 5576 1127 4 47 5363 1091 4 47 5174 1071 3 96 4482 1130 2 55 4250 1131 2 36 1 4...

Page 37: ...7 15 3 5 1 2 18 2 20 Optional Powered Convienience Optional Power Exhaust Power Supply Model Number Electrical Rating Compressor Outdoor Fan Motor Indoor Fan Motor Optional Electric Heat 9 1 DBG0903V 208 230 3 60 2 13 1 83 1 2 0 33 2 2 speed Belt Drive Standard Static 2 6 2 0 33 2 2 speed Belt Drive High Static 3 DBG0903S 208 230 3 60 2 13 1 83 1 4 3 DBG0904V 460 3 60 2 6 1 41 2 0 33 0 85 2 speed ...

Page 38: ... 1 2 18 5 20 3 5 1 2 22 25 Model Number Electrical Rating Compressor Outdoor Fan Motor Indoor Fan Motor Optional Electric Heat Optional Powered Convienience Optional Power Exhaust Power Supply DBG1023V 208 230 3 60 2 14 5 98 DBG1023S 208 230 3 60 2 14 5 98 2 0 33 2 2 speed Belt Drive Standard Static 2 6 0 33 2 2 speed Belt Drive High Static 3 9 1 2 DBG1024V 460 3 60 2 6 3 55 DBG1024S 460 3 60 2 6 ...

Page 39: ... 17 8 20 3 5 1 2 21 3 25 Model Number Electrical Rating Compressor Outdoor Fan Motor Indoor Fan Motor Optional Electric Heat Optional Powered Convienience Optional Power Exhaust Power Supply DBG1203V 208 230 3 60 2 16 110 DBG1203S 208 230 3 60 2 16 110 2 0 33 2 2 speed Belt Drive Standard Static 2 6 0 33 2 2 speed Belt Drive High Static 3 9 1 2 DBG1204V 460 3 60 2 7 8 52 DBG1204S 460 3 60 2 7 8 52...

Page 40: ... 1 2 23 4 25 3 5 1 2 26 9 30 Model Number Electrical Rating Compressor Outdoor Fan Motor Indoor Fan Motor Optional Electric Heat Optional Powered Convienience Optional Power Exhaust Power Supply DBG1503V 208 230 3 60 2 19 123 DBG1503S 208 230 3 60 2 19 123 2 0 5 2 7 2 speed Belt Drive Standard Static 3 9 1 0 5 2 7 2 speed Belt Drive High Static 5 14 2 DBG1504V 460 3 60 2 9 7 62 DBG1504S 460 3 60 2...

Page 41: ...ure the panel is evenly seated on the flanges around the duct openings and the gasket is APPENDIX C UNIT DIMENSIONS Horizontal Discharge Vertical Discharge Bottom of Unit NOTE For horizontal discharge remove supply and return duct cover panels from the end of the unit Save all washered screws According to the model size remove 6 or 8 factory supplied panel clips that are secured to the base pan be...

Page 42: ...COMMENDED MIN MAX AIRFLOW RANGE UNIT HIGH FIRE RATE BTU HR HEATING MINIMUM SCFM COOLING MINIMUM SCFM MAXIMUM 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: ... FLAME SENSOR GND EQUIPMENT GROUND GV GAS VALVE HPS HIGH PRESSURE SWITCH IIC INTEGRATED IGNITION CONTROL LPS LOW PRESSURE SWITCH LS LIMIT SWITCH MAT MIXED AIR TEMPERATURE SENSOR PB POWER DISTRIBUTION BLOCK PLF FEMALE PLUG CONNECTOR PLM MALE PLUG CONNECTOR PS PRESSURE SWITCH RS ROLLOUT SWITCH TB TERMINAL BLOCK TON TIME DELAY RELAY ON TR TRANSFORMER VM VENT MOTOR VMC VENT MOTOR CONTACTOR GR 3 GY L1 ...

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Page 48: ...the feedback page PRODUCT REGISTRATION Thank you for your recent purchase Though not required to get the protection of the standard warranty registering your product is a relatively short process and entitles you to additional warranty protection except that failure by California and Quebec residents to register their product does not diminish their warranty rights For Product Registration please ...

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