INSTALLATION INSTRUCTIONS DCG SERIES LIGHT COMMERCIAL PACKAGED GAS UNIT 7.5 to 12.5 TON Index Replacement Parts ................................................................ 2 Safety Instructions ................................................................ 2 General Information ............................................................. 3 Unit Location ........................................................................ 6 Clearances ............................................................................ 7 Roof Curb Post-Installation Checks ....................................... 8 Roof Top Duct Connections ................................................... 8 Rigging Details ...................................................................... 8 Electrical Wiring .................................................................. 10 Gas Supply Piping ............................................................... 11 Propane Gas Installations ................................................... 13 Circulating Air and Filters .................................................... 14 Venting ............................................................................... 14 Condensate Drain Connection ............................................ 14 Startup, Adjustments, and Checks ...................................... 15 Air flow Adjustments .......................................................... 16 Motor Sheave Adjustments ................................................ 17 Gas System Check ............................................................... 17 Normal Sequence Of Operation .......................................... 20 Only personnel that have been trained to install, adjust, service Maintenance ...................................................................... 22 or repair (hereinafter, “service”) the equipment specified in this manual should service the equipment. The manufacturer Troubleshooting.................................................................. 24 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 PROP 65 WARNING that require one or more licenses to service the equipment FOR CALIFORNIA CONSUMERS 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 Cancer and Reproductive Harm - www.P65Warnings.ca.gov this manual without proper training may result in product 0140M00517-A damage, property damage, personal injury or death. *NOTE: Please contact your distributor or our website for the RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION. applicable Specification Sheet referred to in this manual. These installation instructions cover the outdoor installation of This Forced Air Central Unit Design Complies With Requirements single package heating and cooling units. See the Specification Embodied In The American National Standard / National Standard Sheet applicable to your model for information regarding acces- of Canada Shown Below. sories. ANSI Z21.47•CSA-2.3 Central Furnaces Our continuing commitment to quality products may mean a change in specifications without notice. © 2013 - 2017, 2019 IOD-1005J 03/2019 5151 San Felipe St., Suite 500, Houston, TX 77056 www.daikinac.com Index continued WARNING Appendix A Blower Performance Data FIRE OR EXPLOSION HAZARD Belt Drive - Standard Down Shot .................................... 27 Appendix A Blower Performance Data Failure to follow the safety warnings exactly could result in serious injury, death or property damage. Belt Drive - Standard Horizontal ..................................... 28 Appendix A Blower Performance Data Never test for gas leaks with an open flame. Belt Drive - Down Shot High Static ................................. 29 Use a commercially available soap solution made Belt Drive - Horizontal High Static .................................. 30 specifically for the detection of leaks to check all connections. A fire or explosion may result causing Appendix A Economizer Pressure Drop ............................... 31 property damage, personal injury or loss of life. Appendix B Electrical Data ........................................... 31 - 32 AVERTISSEMENT Appendix C Unit Dimensions............................................... 33 Appendix D Wiring Diagrams .............................................. 34 RISQUE D'INCENDIE OU D'EXPLOSION Wiring Diagrams For Models with DDC Controls.................. 58 Si les consignes de sécurité ne sont pas suivies à la lettre, Start-Up Checklist................................................................66 cela peut entraîner la mort, de graves blessures ou des dommages matériels. REPLACEMENT PARTS Ne jamais vérifier la présence de fuites de gaz au moyen d'une flamme nue. Vérifier tous les raccords en utilisant une solution savonneuse commerciale conçue ORDERING PARTS spécialement pour la détection de fuites. Un incendie ou When reporting shortages or damages, or ordering repair une explosion risque de se produire, ce qui peut entraîner parts, give the complete unit model and serial numbers as la mort, des blessures ou des dommages matériels. stamped on the unit’s nameplate. Replacement parts for this appliance are available through WARNING your contractor or local distributor. For the location of your nearest distributor, consult the white business pages, the IF THE INFORMATION IN THESE INSTRUCTIONS IS NOT FOLLOWED EXACTLY, A FIRE OR EXPLOSION MAY RESULT CAUSING PROPERTY yellow page section of the local telephone book or contact: DAMAGE, PERSONAL INJURY OR LOSS OF LIFE. EQUIPMENT SUPPORT DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS AND DAIKIN NORTH AMERICA LLC LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE. 19001 KERMIER ROAD WHAT TO DO IF YOU SMELL GAS: WALLER, TEXAS 77484 DO NOT TRY TO LIGHT ANY APPLIANCE. 855-770-5678 DO NOT TOUCH ANY ELECTRICAL SWITCH; DO NOT USE ANY PHONE IN YOUR BUILDING. SAFETY INSTRUCTIONS IMMEDIATELY CALL YOUR GAS SUPPLIER FROM A NEIGHBOR’S PHONE. FOLLOW THE GAS SUPPLIER’S INSTRUCTIONS. TO THE INSTALLER IF YOU CANNOT REACH YOUR GAS SUPPLIER, CALL THE FIRE DEPARTMENT. Before installing this unit, please read this manual to INSTALLATION AND SERVICE MUST BE PERFORMED BY A QUALIFIED familiarize yourself on the specific items which must be INSTALLER, SERVICE AGENCY OR THE GAS SUPPLIER. adhered to, including maximum external static pressure to unit, air temperature rise, minimum or maximum CFM and WARNING motor speed connections. DO NOT CONNECT TO OR USE ANY DEVICE THAT IS NOT DESIGN Keep this literature in a safe place for future reference. CERTIFIED BY DAIKIN FOR USE WITH THIS UNIT. SERIOUS PROPERTY DAMAGE, PERSONAL INJURY, REDUCED UNIT PERFORMANCE AND/OR HAZARDOUS CONDITIONS MAY RESULT FROM THE USE OF SUCH NON- APPROVED DEVICES. 2 WARNING TO AVOID PROPERTY DAMAGE, PERSONAL INJURY OR DEATH, DO NOT USE THIS UNIT IF ANY PART HAS BEEN UNDER WATER. IMMEDIATELY CALL A QUALIFIED SERVICE TECHNICIAN TO INSPECT THE FURNACE AND TO REPLACE ANY PART OF THE CONTROL SYSTEM AND ANY GAS CONTROL HAVING BEEN UNDER WATER. WARNING THIS UNIT MUST NOT BE USED AS A “CONSTRUCTION HEATER” DURING THE FINISHING PHASES OF CONSTRUCTION ON A NEW STRUCTURE. THIS TYPE OF USE MAY RESULT IN PREMATURE FAILURE OF THE UNIT DUE TO EXTREMELY LOW RETURN AIR TEMPERATURES AND EXPOSURE TO CORROSIVE OR VERY DIRTY ATMOSPHERES. WARNING 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. WARNING TO PREVENT THE RISK OF PROPERTY DAMAGE, PERSONAL INJURY OR DEATH, DO NOT STORE COMBUSTIBLE MATERIALS OR USE GASOLINE OR OTHER FLAMMABLE LIQUIDS OR VAPORS IN THE VICINITY OF THIS APPLIANCE. WARNING GENERAL INFORMATION SHOULD OVERHEATING OCCUR OR THE GAS SUPPLY FAIL TO SHUT OFF, TURN OFF THE MANUAL GAS SHUTOFF VALVE EXTERNAL TO THE For complete information and installation instructions for models FURNACE BEFORE TURNING OFF THE ELECTRICAL SUPPLY. with DDC controls, see manual DK-DDC-TGD-XXX WARNING TO PREVENT PROPERTY DAMAGE, PERSONAL INJURY OR DEATH DUE TO FIRE, EXPLOSIONS, SMOKE, SOOT, CONDENSATION, ELECTRIC SHOCK OR CARBON MONOXIDE, THIS UNIT MUST BE PROPERLY INSTALLED, REPAIRED, OPERATED AND MAINTAINED. 3 WARNING AVERTISSEMENT CARBON MONOXIDE POISONING HAZARD RISQUE D'INTOXICATION AU MONOXYDE DE CARBONE Failure to follow the steps outlined below for each Si les étapes décrites ci-dessous ne sont pas suivies pour appliance connected to the venting system being placed chacun des appareils raccordés au système de ventilation into operation could result in carbon monoxide poisoning au moment de sa mise en marche, cela peut entraîner une or death. intoxication au monoxyde de carbone ou la mort. Les étapes suivantes doivent être suivies pour chacun des The following steps shall be followed with each appliance appareils raccordés au système de ventilation au moment connected to the venting system placed in operation, de sa mise en marche, alors que tous les autres appareils while any other appliances connected to the venting raccordés au système de ventilation ne sont pas en system are not in operation: marche : 1. Seal any unused openings in the venting system. 1) Sceller