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Forced Air Propane Construction Heater

Operating Instructions and Owner’s Manual

NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING!

NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING!

NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING!

OPERATING PRECAUTIONS

This is a propane, direct-fired, forced air heater. It's intended use 
is primarily temporary heating of buildings under construction, 
alteration or repair.

Propane is heavier than air. If propane leaks from a connection or 
fitting, it sinks to the floor, collecting there with the surrounding 
air, forming a potentially explosive mixture. Obviously, propane 
leaks should be avoided, so set up the propane supply with utmost 
care. Read enclosed Odor Fade and Propane Sheet for additional 
information about detecting propane leaks. Leak check new 
connections or reconnections with a soap and water solution and 
follow all connection instructions herein. Also, ask your propane 
dealer for advice on the propane application and supply installation 
and ask him to check it if there are any questions.

This heater was designed and certified for use as a construction 
heater in accordance with ANSI Standard Z83.7/CGA 2.14. Check 
with your local fire safety authority if you have any questions about 
your applications. Other standards govern the use of fuel gases 
and heat producting products in specific applications. Your local 
authority can advise you about these.

Direct-Fired means that all of the combustion products enter the 
heated space. Even though this heater operates very close to 100 
percent combustion efficiency, it still produces small amounts of 
carbon monoxide. Carbon monoxide (called CO) is toxic. We can 
tolerate small amounts but not a lot. CO can build up in a heated 
space and failure to provide adequate ventilation could result in 
death. The symptoms of inadequate ventilation are:

 

• headache 

 

• dizziness

 

•  burning eyes and nose 

 

• nausea

 

•  dry mouth or sore throat

So, be sure to follow advice about ventilation in these operating 
instructions.

Forced Air means that a blower or fan pushes the air through the 
heater. Proper combustion depends upon this air flow; therefore, 
the heater must not be revised, modified or operated with 
parts removed or missing. Likewise, safety systems must not be 
circumvented or modified in order to operate the heater.

When the heater is to be operated in the presence of other people 
the user is responsible for properly acquainting those present with 
the safety precautions and instructions, and of the hazards involved.

SAFETY PRECAUTIONS

1.  Check the heater thoroughly for damage. DO NOT operate a 

damaged heater.

2. 

DO NOT

 modify the heater or operate a heater which has been 

modified from its original condition.

3.  Use only propane gas.

4.  Use only VAPOR WITHDRAWAL propane supply. If there is any 

question about vapor withdrawal, ask your propane dealer.

5.  Mount the propane cylinders vertically (shutoff valve up). 

Secure them from falling or being knocked over and protect 
them from damage.

6.  Locate propane containers at least (USA) 7 ft. (2.13m), 

(Canada) 10 ft. (3m) from the heater and 

do not

 direct 

exhaust toward containers.

7. 

IMPORTANT

 Use only the hose and regulator assembly 

provided with the heater. Match the color stripe on the hang 
tag attached to the hose assembly with the color on the label 
located near the propane inlet fitting on the heater. Inspect 
hose assembly before each use of the heater. If there is 
excessive abrasion or wear, or hose is cut, replace with hose 
assembly listed on parts list before using heater.

8.   For either indoor or outdoor use. Adequate ventilation must be 

provided. Provide minimum openings of 1/2 sq. ft. (.046 m²) 
near the floor and 1/2 sq. ft. (.046 m²) near the ceiling (also 
see "Operating Precautions").

9.  If at any time gas odor is detected, IMMEDIATELY 

DISCONTINUE operation until the source of gas has been 
located and corrected. Read enclosed Odor fade and Propane 
Sheet for additional information about detecting propane leaks.

10.  Maintain minimum clearance from normal combustible material 

(like paper) as follows:  floor-0 ft. (0 m); outlet-6 ft. (1.83m); 
sides-2 ft. (.61m); top-6 ft. (1.83m).  Locate 10 ft. (3m) from 
canvas or plastic tarpaulins or similar coverings and secure them 
to prevent flapping or movement due to wind action.

11.  Due to the high surface and exhaust temperatures, adults and 

children must observe clearances to avoid burns or clothing 
ignition.

12.  Operate only on a stable, level surface.

13.  Do not use with duct work. Do not restrict inlet or exit.

14.  Use only the electrical power specified. The electrical 

connection and grounding must comply with National Electrical 
Code - ANSI/NFPA 70 (USA) and CSA C22.1 Canadian Electrical 
Code, Part 1 (Canada).

15.  Use only a properly grounded 3-prong receptacle or extension 

cord (6 ft (1.83m) in length minimum).

16.  Do not move, handle or service while hot or burning.

17.  Use only in accordance with local codes or, in the absence of 

local codes, with the Standard for the Storage and Handling 
of Liquefied Petroleum Gases ANSI/NFPA 58 and CSA B149.1, 
Natural Gas and Propane Installation Code.

Summary of Contents for MHC35FA

Page 1: ...service agency This is an unvented gas fired portable heater It uses air oxygen from the area in which it is used Adequate combustion and ventilation air must be provided Refer to page 3 MHC35FA OPERATING INSTRUCTIONS AND OWNER S MANUAL READ INSTRUCTIONS CAREFULLY Read and follow all instructions Place instructions in a safe place for future reference Do not allow anyone who has not read these ins...

Page 2: ...HE HEATER IN SPACES WHICH DO OR MAY CONTAIN VOLATILE OR AIRBORNE COMBUSTIBLES OR PRODUCTS SUCH AS GASOLINE SOLVENTS PAINT THINNER DUST PARTICLES OR UNKNOWN CHEMICALS WARNING CARBON MONOXIDE CAN KILL YOU NOT FOR HOME OR RECREATIONAL VEHICLE USE USING A PORTABLE HEATER IN AN ENCLOSED AREA CAN PRODUCE DEADLY CARBON MONOXIDE WARNING YOUR SAFETY IS IMPORTANT TO YOU AND TO OTHERS SO PLEASE READ THESE IN...

Page 3: ...ose present with the safety precautions and instructions and of the hazards involved SAFETY PRECAUTIONS 1 Check the heater thoroughly for damage DO NOT operate a damaged heater 2 DO NOT modify the heater or operate a heater which has been modified from its original condition 3 Use only propane gas 4 Use only VAPOR WITHDRAWAL propane supply If there is any question about vapor withdrawal ask your p...

Page 4: ...ters and your fuel gas supplier FINALLY let the fuel gas service person and the firefighters check for escaped gas Have them air out the building and area before you return Properly trained service people must repair any leaks check for further leakages and then relight the appliance for you ODOR FADING NO ODOR DETECTED Some people cannot smell well Some people cannot smell the odor of the man mad...

Page 5: ...wer RESTART AFTER SAFETY SHUTDOWN 1 Securely close valve at propane cylinder Unplug power cord 2 Wait 5 minutes 3 Restart following START procedure MAINTENANCE AND STORAGE 1 The heater should be inspected before each use and at least annually by a qualified person 2 Before each use check the soft O ring seat at the bullnose of the POL fitting If the O ring is cut scuffed or otherwise damaged repla...

Page 6: ... Ignitor 1 19 27094 Clip Handle 20 27095 Handle 1 28494 Label Model Warnings 1 70036 Manual Operating Instructions Parts List 1 28204 Label Hang Tag LP 1 Not shown on exploded view REF ITEM DESCRIPTION QTY 1 27436 Heater Body 1 2 27442 Control Box Assy 1 3 28081 Valve w Thermocouple 1 4 21007 Hose Regulator Assembly 1 21007 20 Hose Regulator Assembly 20 HS only 1 22130 Wire Assembly 1 7 28080 Elec...

Page 7: ...unity to assure you that qualified service facilities are available if required With the cooperation of independent dealers a nationwide network of authorized servicing dealers is available for your servicing requirements Should your product require servicing read the section of the manual entitled Servicing Who gets the warranty The warranty is limited to the consumer who originally purchases the...

Page 8: ...or levels of CO CO2 and NO2 existing at the construction site at the minimum at the start of the shift and after 4 hours Provide ventilation air exchange either natural or mechanical as required to maintain acceptable indoor air quality USA 8 Hr Time weighted average OSHA 29 CFR 1926 55 App A Canada 8 hr time weighted average WorkSafe BC OHS Guidelines Part 5 1 and Ontario Workplaces Reg 833 CO 50...

Page 9: ...ual NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING THIS PAGE INTENTIONALLY LEFT BLANK ESTA PÁGINA INTENCIONALMENTE SE DEJA EN BLANCO CETTE PAGE A ÉTÉ INTENTIONNELLEMENT LAISSÉE VIERGE ...

Page 10: ...regoing is the full extent of the responsibility of the Company There are no other warranties express or implied Specifically there is no warranty of fitness for a particular purpose and there is no warranty of merchantability In no event shall the Company be liable for delay caused by imperfections for consequential damages or for any charges of the expense of any nature incurred without its writ...

Page 11: ...hauffage portatif alimenté au gaz n est pas ventilé Il utilise l oxygène de l air ambiant Une circulation d air adéquate doit être assurée pour la combustion et la ventilation Voir page 3 LISEZ SOIGNEUSEMENT LES INSTRUCTIONS Lisez et observez toutes les instructions Conservez ces instructions dans un endroit sécuritaire pour vous y référer ultérieurement Ne permettez pas à quiconque n ayant pas lu...

Page 12: ...RES PAR CONSÉQUENT VEUILLEZ LIRE CES DIRECTIVES AVANT DE FAIRE FONCTIONNER CET APPAREIL DE CHAUFFAGE AVERTISSEMENT GÉNÉRAL DE DANGER LE NON RESPECT DES MESURES DE PRÉVENTION ET DES INSTRUCTIONS FOURNIES AVEC CET APPAREIL DE CHAUFFAGE RISQUE DE CAUSER LA MORT DES BLESSURES GRAVES ET DES DOMMAGES OU DES PERTES MATÉRIELLES RÉSULTANT D INCENDIE D EXPLOSION DE BRÛLURE D ASPHYXIE D INTOXICATION AU MONOX...

Page 13: ...RITÉ 1 Vérifiez attentivement si l appareil de chauffage a subi des dommages NE FAITES PAS fonctionner un appareil endommagé 2 NE MODIFIEZ PAS l appareil de chauffage et ne le faites pas fonctionner s il n est plus dans son état d origine 3 Utilisez uniquement du gaz propane 4 Utilisez uniquement une alimentation au propane à ÉLIMINATION DES ÉMANATIONS Si vous avez des questions à propos de l élim...

Page 14: ... ou le fournisseur en gaz combustible ait confirmé que l endroit ne comporte aucun risque EN DERNIER LIEU laissez le personnel du service des incendies ou d approvisionnement en gaz combustible vérifier si du gaz s échappe Assurez vous qu ils aient aéré l immeuble avant d y retourner Le personnel d entretien expérimenté doit colmater toute fuite vérifier la présence d autres fuites puis se charger...

Page 15: ... dans le tuyau ait brûlé 3 Débranchez le cordon d alimentation ATTENTION Fermez toujours l alimentation en gaz avant de débrancher l alimentation électrique REDÉMARRAGE APRÈS UN ARRÊT D URGENCE 1 Fermez complètement le robinet sur la bonbonne de gaz propane Débranchez le cordon d alimentation 2 Attendez cinq minutes 3 Recommencez la procédure DÉMARRAGE ENTRETIEN ET ENTREPOSAGE 1 L appareil de chau...

Page 16: ...uyau et régulateur 20 HS seulement 1 22130 Câblage 1 7 28080 Électrode 1 8 26168 Contacteur de commande max 116 C 240 F 1 9 28082 Thermocouple 1 10 28091 Écrou hex M8 x 1 filet fin pour thermocouple 2 11 28076 Moteur 0 74 A 1 12 27441 Grille 1 RÉF ART DESCRIPTION QTÉ 13 28077 Ailette de ventilateur inclin 6 75 x 0 75 1 14 22113 Cordon 1 15 28136 Réducteur de tension de la bague 1 16 28116 Écrou he...

Page 17: ...vec un réseau national de détaillants indépendants qui sont également à votre disposition pour répondre à vos besoins en matière de réparation Si ce produit nécessite des réparations lisez la section Réparation du présent manuel À qui s adresse la garantie Seul l acheteur original du produit peut profiter de la présente garantie Quels éléments sont couverts par la garantie La garantie limitée couv...

Page 18: ...ut le moins au début du quart de travail et après 4 heures Prévoir un échange d air de ventilation soit naturel ou mécanique tel que requis pour maintenir une qualité de l air intérieur acceptable Moyenne pondérée dans le temps sur 8 heures États Unis OSHA 29 CFR 1926 55 App A Moyenne pondérée dans le temps sur 8 heures Canada Directives SST de Work Safe BC partie 5 1 et Règlement sur les milieux ...

Page 19: ...cas l entreprise ne saura être tenue responsable des retards causés par des défectuosités ni des dommages indirects ni des dépenses encourues sans son consentement écrit quelle que soit leur nature Le coût de la réparation ou du remplacement sera le seul recours possible en cas de violation de garantie Il n y a aucune garantie contre une transgression de ce genre ni aucune garantie tacite découlan...

Page 20: ...ón calificada Este calentador portátil a gas no tiene una fuente propia de ventilación Utiliza el aire oxígeno del área en la cual se emplea Debe suministrarse el aire necesario para la ventilación y la combustión Consulte la página S 3 LEA CUIDADOSAMENTE LAS INSTRUCCIONES lea y siga todas las instrucciones Consérvelas en un lugar seguro para futura referencia No permita que nadie que no haya leíd...

Page 21: ...NTADOR TAL COMO LO RECOMIENDAN LAS INSTRUCCIONES NUNCA USE EL CALENTADOR EN ESPACIOS QUE CONTIENEN O PODRÍAN CONTENER COMBUSTIBLES VOLÁTILES O PRODUCTOS COMO GASOLINA SOLVENTES DILUYENTE DE PINTURA O PRODUCTOS QUÍMICOS DESCONOCIDOS ADVERTENCIA EL MONOXIDO DE CARBONO PUEDE MATARLO NO PARA EL USO CASERO O RECREATIVO DE VEHÍCULOS USANDO UN CALENTADOR PORTÁTIL EN UN ÁREA CERRADA PUEDE PRODUCIR MONÓXID...

Page 22: ...calentador presenta daños NO use un calentador dañado 2 NO modifique el calentador ni lo use si su configuración original ha sido modificada 3 Utilice únicamente gas propano 4 Utilice únicamente suministro de propano con RECUPERACIÓN DE VAPOR Si tiene alguna pregunta sobre la recuperación de vapor consulte al proveedor de propano 5 Monte los cilindros de propano verticalmente válvula hacia arriba ...

Page 23: ...permita que la persona del servicio de gas y los bomberos revisen si hay fugas de gas Haga que ventilen el edificio y el área antes de su regreso Un agente de servicios calificado debe reparar cualquier fuga revisar si hay otras fugas y volver a encender el artefacto por usted DISIPACIÓN DEL OLOR NO SE DETECTA NINGÚN OLOR Algunas personas tienen problemas de olfato Algunos no pueden detectar el ol...

Page 24: ...le de alimentación 2 Espere 5 minutos 3 Reinicie según se indica en la sección sobre el procedimiento de ENCENDIDO MANTENIMIENTO Y ALMACENAMIENTO 1 Debe inspeccionar el calentador antes de cada uso y hacerlo revisar por una persona calificada una vez por año 2 Antes de cada uso revise siempre el asiento del anillo O de goma que se encuentra en el extremo del acople del POL Si el anillo O presenta ...

Page 25: ...or máximo 240 F 116 C 1 9 28082 Termocupla 1 10 28091 Tuerca hexagonal M8 x 1 Termocupla rosca fina 2 11 28076 Motor 0 74 A 1 12 27441 Conjunto de la rejilla 1 REF DE ARTÍCULO DESCRIPCIÓN CANTIDAD 13 28077 Aspas del ventilador 6 75 x 0 75 de inclinación 1 14 22113 Conjunto de cable de alimentación 1 15 82136 Cojinete de liberación de tensión 1 16 28116 Tuerca hexagonal 5 28 Válvula de extremo rosc...

Page 26: ...paración Si su producto necesitara mantenimiento lea la sección del manual titulada Mantenimiento A quién le corresponde la garantía La garantía se limita al consumidor que realizó la compra original del producto Qué cubre Esta garantía limitada cubre todas las deficiencias materiales y de fabricación Qué no cubre Esta garantía limitada no cubre daños derivados de accidentes del uso indebido o abu...

Page 27: ...roporcione aire de ventilación exterior ya sea de forma natural o mecánica como sea necesario para mantener una calidad aceptable del aire interior EE UU Promedio ponderado de 8 horas OSHA 29 CFR 1926 55 App A Canadá Promedio ponderado de 8 horas Recomendaciones WorkSafe BC OHS Parte 5 1 y Reglamentaciones para lugares de trabajo de Ontario 833 CO 50 partes por millón 25 partes por millón CO2 5000...

Page 28: ...lícitas ni implícitas Específicamente no hay garantías acerca de la adecuación para un propósito particular y no hay garantías de comerciabilidad En ningún caso la Compañía será responsable por demoras causadas por imperfecciones por daños consecuentes ni por ningún otro cargo de gastos de ninguna naturaleza realizados sin su consentimiento escrito El costo de reparación o reemplazo será la única ...

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