Desa UKC70ET, BC55CT, BC115DT, BC165DT, UKC115DT, UKC55CT Fuels, Ventilation, Theory of Operation

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FUELS

WARNING: Use only kero- sene, #1/#2 diesel/fuel oil, JET A orJP-8fuelstoavoidriskoffireor explosion.Neverusegasoline,oil drained from crankcases, naph- tha, paint thinners, alcohol or other highly flammable fuels.

Use only kerosene, #1/#2 diesel/fuel oil, JET A or JP-8 fuels. Heavier fuels such as No. 2 fuel oil or No.

2 diesel fuel may also be used but will result in:

•noticeable odor

•additional fuel filter maintenance

•the need for nontoxic, anti-icer additives in very cold weather

Do not use fuels heavier than No. 2 grade or heavy oils such as oil drained from crankcases. These heavy oils will not ignite properly and will contaminate the heater.

IMPORTANT: Use a KEROSENE ONLY (blue) or DIESEL ONLY (yellow) storage container. Be sure storage container is clean. Foreign matter such as rust, dirt or water will cause the ignition control assembly to shut down heater. Foreign matter may also require heaterʼs fuel system to be frequently cleaned.

VENTILATION

WARNING:Provideafreshair opening of at least three square feet (2,800 square cm) for each 100,000 Btu/hr rating. Provide extra fresh air if more heaters are being used. The minimum ventilation requirements must be followed to avoid risks as- sociated with carbon monoxide poisoning. Make certain these requirements are met prior to operating heater.

Example: A 200,000 Btu/Hr (58.6 kw) heater requires one of the following:

•a two-car garage door [16 feet (4.88 meter) opening] raised 5 inches (12.7 cm)

•a single-car garage door [9 feet (2.74 meter) opening] raised 8 inches (20.3 cm)

•two, 30 inch (76.2 cm) windows raised 15 inches (38.1 cm)

THEORY OF OPERATION

The Fuel System: The air pump forces air through the air line. The air is then pushed through the nozzle. This air causes fuel to be lifted from the tank. A fine mist of fuel is sprayed into the combus- tion chamber.

The Air System: The motor turns the fan. The fan pushes air into and around the combustion chamber. This air is heated and provides a stream of clean, hot air.

The Ignition System: The ignition control assembly provides power to the ignitor. This ignites the fuel/air mixture in the combustion chamber.

The Flame-Out Control System: This system causes the heater to shut down if the flame goes out.

Combustion Chamber

Ignitor

Fan Motor

Air Pump Air Intake Filter

Clean

 

 

Cool Air In

Heated

 

 

Air Out

 

 

 

 

 

 

Air Output Filter

Fuel

 

 

 

Tank Nozzle

Fuel

Air Line

Ignition Control

 

Filter

To Burner

Assembly

Air For Fuel

 

Air For

Fuel

System

 

Combustion

 

 

And Heating

Figure 5 - Cross Section Operational View

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116170-01A

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Contents Table of Contents Safety Information Unpacking Product IdentificationVentilation FuelsTheory of Operation Assembly For 40, 55 and 70 Models onlyFor 115 and 165 Models only Tools NeededOperation To Start HeaterTo Stop Heater To Restart HeaterSTORING, Transporting or Shipping Replace drain plug if providedTroubleshooting Preventative Maintenance ScheduleFault Condition Possible Cause Remedy Control assembly Defective ignitor Assembly SemblyDirty fuel filter Ment, Obstruction in nozzleService Procedures Upper Shell RemovalFAN AIR OUTPUT, AIR Intake and LintFuel Filter Pump Pressure AdjustmentReplace filter end cover Ignitor Replace combustion chamberReplace fan see Fan, Nozzle AssemblyPlace plastic hex-body into vise and lightly tighten Fuel and AIR Line Replacement and Proper Routing Pump Rotor Procedure if Rotor is BindingSpecifications Model Size 115 165Illustrated Parts Breakdown Models BC40 and RC40Parts List NTC-4CModels BC55CT, RC55CT, UKC55CT, BC70ET, RC70ET and UKC70ET See 39 13 Wire Not Shown Connects T-stat to Ignition Control Assembly Burner Head Assembly FHPF3-6CFHPF3-5C Wheels and Handle Parts List NTC-3BZWiring Diagrams Wiring DiagramsAccessories Ignition Control Assembly Photocell Tester HA1170Thermostat KIT HA1210 AIR Gauge KIT HA1180116170-01A Warranty and Repair Service Keep this WarrantyTable DES Matières Remplir pour vos dossiersLA Sécurité Alimentation en carburantDéballage Identification DU ProduitCarburants Théorie DE FonctionnementLa production dune odeur particulière Cas dextinction de la flammeAssemblage Pour LES Modèles 40, 55 ET 70 UniquementPour LES Modèles 115 ET Outils nécessairesFonctionnement Pour Allumer Lappareil DE ChauffagePour Arrêter Lappareil DE Chauffage Pour Rallumer Lappareil DE ChauffageRéinitialisation de lappareil de chauffage Entreposage Transport OU ExpéditionRemettez le bouchon de vidange en place si nécessaire Calendrier Dentretien Préventif État DE LA Panne Cause Possible SolutionDépannage Photoélectrique mal installé Pas de carburant dans leRéservoir Du kérosène Sallume pas Mauvaise pression PompeRetrait DE LA Partie Supérieure DE Lhabillage VentilateurFiltres DE Sortie DAIR, DE Prise Dair ET DE PeluchesAjustement DE LA Pression DE LA Pompe Filtre À CarburantRemplacez le couvercle des filtres Important ne huilez pas les filtres. Filtre de prise dairAllumeur Assemblage DE LA Buse DaérationRotor DE Pompe Procédure si le rotor se bloque Tuyau de la conduite dair etAssemblage DE Commande DE Lallumeur Taille du modèle 115 165VUE Détaillée DES Pièces Modèles BC40 ET RC40Liste DES Pièces Modèles BC55CT, RC55CT, UKC55CT, BC70ET, RC70ET ET UKC70ET Voir Modèles De la commande dallumage ou au thermostat si présent Assemblage DE Tête DE Brûleur Vis102001-30 Moteur 079975-02 Corps de pompe Liste DE Pièces DES Roues ET DE LA Poignée Diagrammes DE Câblage De la commande ’allumeurAccessoires PRÊT-À-MONTER DE LA Jauge Dair HA1180PRÊT-À-MONTER DE Roues ET DE Poignée Renforcées HA1202 Prêt À Monter Pour Thermostat HA1210116170-01A Service DE Garantie ET DE Réparation Conservez Cette Garantie
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