www.desatech.com 119143-01ASAFETy INFORMATIONwarninG: This productcontains and/or generateschemicals known to the Stateof California to cause cancer orbirth defects or other reproduc-tive harm.warninG: Fire, burn, inhala-tion and explosion hazard. Keepsolid combustibles, such as build-ing materials, paper or cardboard,a safe distance away from theheater as recommended by theinstructions. never use the heaterin spaces which do or may containvolatile or airborne combustiblesor products such as gasoline, sol-vents, paint thinner, dust particlesor unknown chemicals.warninG: not for home orrecreational vehicle use.The heater is designed and approved foruse as a construction heater under ANSIZ83.7•CGA .14-000 Construction Heater.The purpose of construction heaters is toprovide temporary heating of buildings underconstruction, alteration or repair. Properlyused, the heater provides safe economicalheating. Products of combustion are ventedinto the area being heated.We cannot foresee every use which may bemade of our heaters. Check with your localfire safety authority if you have questionsabout heater use.Other standards govern the use of fuel gases andheat producing products for specific uses. Yourlocal authorities can advise you about these.Carbon Monoxide Poisoning: Some people aremore affected by carbon monoxide than oth-ers. Early signs of carbon monoxide poisoningresemble the flu, with headaches, dizzinessand/or nausea. If you have these signs, theheater may not be working properly. Get freshair at once! Have heater serviced.Propane/LP Gas: Propane/LP gas is odorless.An odor-making agent is added to propane/LPgas. The odor helps you detect a propane/LPgas leak. However, the odor added to pro-pane/LP gas can fade. Propane/LP gas maybe present even though no odor exists.Make certain you read and understand allwarnings. Keep this manual for reference. Itis your guide to safe and proper operation ofthis heater.1. Install and use heater with care. Followall local ordinances and codes. In theabsence of local ordinances and codes,refer to the Standard for Storage andHandling of Liquefied Petroleum Gas,ANSI/NFPA 58 and the Natural Gas andPropane Installation Code CSA B149.1.This instructs on the safe storage andhandling of propane gases.. Use only the electrical voltage and fre-quency specified on model plate. Theelectrical connections and grounding ofthe heater shall follow the National ElectricCode, ANSI/NFPA 70 or the CanadianElectric Code, Part 1.3. Electrical grounding instructions - Thisappliance is equipped with a three-prong(grounding) plug for your protection againstshock hazard and should be plugged di-rectly into a properly grounded three-prongreceptacle or extension cord.4. This product has been approved for use inthe Commonwealth of Massachusetts.5. For indoor use only. Provide adequateventilation.6. Keep heater away from strong drafts,wind, water spray, rain or dripping water.TABLE OF CONTENTSSafety Information ............................................... Product Identification ........................................... 3Unpacking............................................................ 4Assembly ............................................................. 4Theory of Operation............................................. 4Propane Supply ................................................... 5Ventilation ............................................................ 5Installation ........................................................... 5Operation ............................................................. 6Storage ................................................................ 7Maintenance ........................................................ 7Service Procedures ............................................. 8Specifications ...................................................... 9Wiring Diagrams ................................................ 10Replacement Parts .............................................11Technical Service................................................11Service Publications ...........................................11Accessories ........................................................11Illustrated Parts Breakdown and Parts List........ 1Warranty and Repair Service ............................ 18