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READ INSTRUCTIONS CAREFULLY:
WARNING:
Improper installation, adjustment, alteration, service or maintenance
can cause injury or property damage. Refer to this manual. For assistance or
additional information consult a qualified installer, service agency or the gas supplier.
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.
Leave the building immediately
Immediately call your gas supplier from a phone remote from the building. Follow the
gas suppliers instructions.
If you cannot reach your gas supplier, call the Fire Department.
-- Installation and service must be performed by a qualified installer, service agency or the
gas supplier.
FOR YOUR SAFETY:
Do not store or use gasoline or other flammable vapors and liquids in the vicin-
ity of this or any other appliance.
WARNING: If the information in these instructions are not followed exactly, a fire or
explosion may result causing property damage, personal injury or loss of life.
COMPACT UNIT HEATER
FOR RESIDENTIAL/COMMERCIAL USE
®
25
01
60185

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Summary of Contents for Mr. Heater MHU 50

  • Page 1 COMPACT UNIT HEATER FOR RESIDENTIAL/COMMERCIAL USE ® READ INSTRUCTIONS CAREFULLY: WARNING: Improper installation, adjustment, alteration, service or maintenance can cause injury or property damage. Refer to this manual. For assistance or additional information consult a qualified installer, service agency or the gas supplier. WHAT TO DO IF YOU SMELL GAS DO NOT try to light any appliance.
  • Page 2: General Information

    WARNING: WARNING: WARNING: FIRE OR EXPLOSION HAZARD THE STATE OF CALIFORNIA REQUIRES THE FOLLOWING WARNINGS: WARNING: WARNING: 125K unit 80K Unit 50K Unit V/A/H/Phase BTU Input BTU output Efficiency % CONTENTS LANGUAGES GENERAL INFORMATION WWW.MRHEATER.COM...
  • Page 3: Unit Dimensions

    UNIT DIMENSIONS (N-NATURAL GAS, P-PROPANE) HANGING BRACKETS MOUNTING SLOTS (Typical) 5/16 x 3 Inches (8 x 76 mm) FLOW HEAT EXCHANGER (ALUMINIZED STEEL) TOP VIEW HANGING BRACKETS (2) ADJUSTABLE LOUVERS SERVICE ACCESS PANEL SIDE VIEW...
  • Page 4 SHIPPING TABLE 1 UNIT CLEARANCES table1 GARAGE INSTALLATIONS: AIRCRAFT HANGER:...
  • Page 5: Unit Heater Installation

    CAUTION: UNIT HEATER INSTALLATION figure 1 VENTING REQUIREMENTS NOTE: figure 1 FIGURE 1 INSTALL UNIT / UTILITY HEATER SUPPORT MOUNTING RODS BRACKETS (2) INSTALLATIONS figure 2 A - General Recommendations and Requirements. COMBUSTION AND VENTILATION AIR...
  • Page 6 table 2 VENT TERMINATION ON SINGLE WALL VENT SINGLE WALL TERMINATION ROOF FLASHING ROOF PITCHED FROM 0 TO 4 CLEARANCE SHALL NOT BE A THIMBLE CONCEALED SPACE DOUBLE WALL (TYPE B-1) TERMINATION ROOF FLASHING ROOF PITCHED FROM 0 TO 4 12 MAX CLEARANCE TO BE AS SPECIFIED ON TYPE...
  • Page 7 Venting A - General Recommendations and Requirements C - Horizontal Venting General E - Horizontal Venting - Residential. figure 6 figure 3 Venting A - General Recommendations and Requirements C - Horizontal Venting General Horizontal Venting - Commercial. figure 3. figure FLUE TRANSITION (ATTACHED) FIGURE 4...
  • Page 8 HORIZONTAL VENTING - RESIDENTIAL INSTALLATION INDUCED DRAFT BLOWER UPWARD SLOPE 12 INCHES MIN. (30.5CM) FLUE TRANSITION (PROVIDED) VENT TERMINATION CAP LISTED THIMBLE THROUGH COMBUSTION WALL CATEGORY III VENT ACCORDING TO THESE INSTALLATION INSTRUCTIONS. SLOPED: + 1/4 INCH FOR 1 FOOT RUN MINIMUM. NOTE - MINIMUM HORIZONTAL LENGTH 5FT.
  • Page 9: Electrical Connections

    LINE VOLTAGE FIELD WIRING UNIT BLACK BLACK WHITE WHITE ELECTRICAL CONNECTIONS EQUIPMENT GROUND NOTE: BLACK WIRE WITH WHITE TAPE OR WHITE WIRE WITHOUT TAPE FIGURE 7 GAS SUPPLY CONNECTION MANUAL MAIN SHUT-OFF VALVE (FURNISHED BY INSTALLER) GROUNDED DO NOT CONNECT LINE POWER TO JOINT UNION THERMOSTAT TERMINAL STRIP ON OUTSIDE OF HEATER.
  • Page 10: Before Lighting

    WARNING Electric shock hazard. Can cause injury or death. Do not use this heater if any part has been under water. Immediately call a qualified service technician to inspect the furnace and IMPORTANT to replace any part of the control system and any gas control which has been under water.
  • Page 11: Ignition Control Led

    IGNITION CONTROL LED TABLE 3 STOP! IGNITION CONTROL LED LIMIT CONTROL UNIT OPERATION TO TURN OFF GAS TO UNIT HEATING SEQUENCE OF OPERATION LOUVER VANE ADJUSTMENTS COMBUSTION AIR PRESSURE SWITCH Refer to ignition control board table 3 FLAME ROLLOUT SWITCH HIGH ALTITUDE table 4 table 5...
  • Page 12: Combustion Air Blower

    FLUE PASSAGEWAY AND FLUE BOX GAS FLOW COMBUSTION AIR BLOWER GAS PRESSURE ELECTRICAL figure 10 FLUE AND CHIMNEY SERVICE CAUTION FAILURE TO OPERATE BURNERS...
  • Page 13: Ladder Diagram

    White OPTIONAL THERMOSTAT INSTALLATION LADDER DIAGRAM...
  • Page 14: Fuel Conversion Instructions

    FUEL CONVERSION INSTRUCTIONS Section 1 FUEL CONVERSION KITS F260163 For Natural - to L.P. Gas Conversions 13575 1 1727 13576 F260164 For L.P. - to - Natural Gas Conversions 13575 1 1727 13576...
  • Page 15 Section 2 FUEL CONVERSION INSTRUCTIONS Step 1 WARNING: Explosion Hazard CAUTION THE UNIT MUST NOT BE CONNECTED TO EITHER THE GAS SUPPLY OR THE ELECTRICAL POWER SUPPLY, BEFORE PROCEEDING WITH CONVERSION. Step 2 WARNING: Electrical Shock Hazard Step 3 The electrode and sensor are not adjustable. DO NOT change location or position as part of this conversion kit.
  • Page 16 10" 4" N.G. L.P. Step 5 Step 10 Step 6 Step 7 Step 11 Step 8 Step 9 Step 12...
  • Page 17 Section 3 RATING TAG CONVERSION INLET PRESSURES: Step 13 Natural Gas Propane Step 14 Step 15 Step 16...
  • Page 18: Repair Parts

    REPAIR PARTS...
  • Page 19: Parts List

    PARTS LIST: SEE BACK PAGE FOR PARTS ORDERING INFORMATION 60105 60105 60022 60021 60141 60141 60155 60045 60045 60046 60046 60156 60156 60128 60128 60025 60025 60147 60146 60015 60015 60031 60031 60020 60020 60130 60140 60157 60157 60075 60075 60080 60080 60100...
  • Page 21 PARTS LIST: SEE BACK PAGE FOR PARTS ORDERING INFORMATION 60200 60201 60202 60203 60204 60205 60206 60207 60208 60210 6021 1 60103 60160 60144 60213 60214 60215 60216 60217 60031 60146 60015 60022 28735 28788 60025 60105 60223 60046 60141 60224 60155 60225...
  • Page 22: Parts Ordering Information

    OPERATING INSTRUCTIONS ® READ INSTRUCTIONS CAREFULLY: WARNING: PARTS ORDERING INFORMATION: PURCHASING: FOR INFORMATION REGARDING SERVICE LIMITED WARRANTY...
  • Page 23 CALEFACTOR COMPACTO PARA USO RESIDENCIAL/COMERCIAL ® LEA CUIDADOSAMENTE LAS INSTRUCCIONES: ADVERTENCIA: La instalación, ajuste, alteración, reparación o mantenimiento inadecuados pueden causar lesiones o daños materiales. Consulte este manual. Por asistencia o información adicional, consulte con un instalador calificado, agencia de servicio o la compañía de gas. QUÉ...
  • Page 24 ADVERTENCIA: ADVERTENCIA: ADVERTENCIA: EL ESTADO DE CALIFORNIA REQUIERE LA SIGUIENTE ADVERTENCIA: ADVERTENCIA: ADVERTENCIA: 125K unit 50K Unit 80K Unit V/A/H/Phase BTU Input BTU output Efficiency % IDIOMAS WWW.MRHEATER.COM...
  • Page 25 TAMAÑO DE LA UNIDAD (N: GAS NATURAL, P: PROPANO) SOPORTES RANURAS DE MONTAJE (típico) PARA COLGAR 5/16 x 3 pulgadas (8 x 76 mm) FLUJO DE AIRE INTERCAMBIADOR DE CALOR (ACERO ALIMINIZADO) VISTA SUPERIOR HANGING ENTRADAS ELÉCTRICAS BRACKETS (2) REJILLAS DE ADJUSTABLE SALIDA DE ENTRADA...
  • Page 26 TABLA 1 SEPARACIONES DE LA UNIDAD REQUISITOS: CSA EN LOS EE.UU. tabla 1. INSTALACIONES EN GARAJES: HANGARES DE AVIONES:...
  • Page 27 CUIDADO: REQUISITOS NOTA: figura 1 FIGURA 1 DE LA UNIDAD/CALEFACTOR DE TRABAJO VARILLAS DE SOPORTES DE SOSTÉN MONTAJE (2) COMERCIALES Y RESIDENCIALES figura 2 A - Recomendaciones generales y requisitos.
  • Page 28 VENT TERMINATION ON SINGLE WALL VENT SINGLE WALL TERMINATION ROOF FLASHING Tabla 2. ROOF PITCHED FROM 0 TO 4 CLEARANCE SHALL NOT BE A THIMBLE CONCEALED SPACE DOUBLE WALL (TYPE B-1) TERMINATION ROOF FLASHING ROOF PITCHED FROM 0 TO 4 12 MAX CLEARANCE TO BE AS SPECIFIED ON TYPE...
  • Page 29 Ventilación A - Recomendaciones generales y requisitos C - Ventilación horizontal general E - Ventilación horizontal residencial. figura 6 figura 3. Ventilación A - Recomendaciones generales requisitos C - Ventilación horizontal general D - Ventilación horizontal comercial. Consulte la figura 3. figura 4.
  • Page 30 HORIZONTAL VENTING - RESIDENTIAL INSTALLATION INDUCED DRAFT BLOWER UPWARD SLOPE 12 INCHES MIN. (30.5CM) FLUE TRANSITION (PROVIDED) VENT TERMINATION CAP LISTED THIMBLE THROUGH COMBUSTION WALL CATEGORY III VENT ACCORDING TO THESE INSTALLATION INSTRUCTIONS. SLOPED: + 1/4 INCH FOR 1 FOOT RUN MINIMUM. NOTE - MINIMUM HORIZONTAL LENGTH 5FT.
  • Page 31: Conexiones Eléctricas

    UNIDAD NEGRO NEGRO BLANCO BLANCO CONEXIONES ELÉCTRICAS TIERRA DEL NOTA: EQUIPO CABLE NEGRO CON CINTA BLANCA O CABLE BLANCO SIN CINTA FIGURA 7 LLAVE GENERAL DE CORTE MANUAL (SUMINISTRADA POR EL INSTALADOR) EMPALME CON DE TIERRA NO CONECTE LA FLUJO DE GAS FLUJO DE GAS LA PARTE EXTERIOR DEL CALEFACTOR.
  • Page 32: Encendido De La Unidad

    ADVERTENCIA o la muerte. No use este calefactor si alguna de las piezas ha estado bajo el agua. Contáctese calificado para que inspeccione el calefactor y IMPORTANTE reemplace cualquier pieza del sistema de control y control de gas que haya estado bajo el agua. ADVERTENCIA Peligro de explosión.
  • Page 33 figura 10). LED DE CONTROL DE ENCENDIDO DETÉNGASE! TABLA 3 LED DE CONTROL DE ENCENDID LED DE CONTROL DE ENCENDID AJUSTE DE LAS FUNCIONAMIENTO DE LA UNIDAD PERSIANAS Consulte la tabla 3 de la placa del controlador de encendido. INTERRUPTOR DETECTOR DE LLAMA LUGARES MUY ALTOS tabla 4 tabla 5...
  • Page 34: Fallas De Funcionamiento

    FLUJO DE GAS CUIDADO FALLAS DE FUNCIONAMIENTO QUEMADORES...
  • Page 35 White OPTIONAL THERMOSTAT INSTALLATION DIAGRAMA DE ESCALERA...
  • Page 36 F260163 Para conversión de gas natural a L.P. 13575 1 1727 13576 F260164 Para conversión de L.P a gas natural 13575 1 1727 13576...
  • Page 37 Figura 1 Paso 1 ADVERTENCIA: Peligro de explosión CUIDADO. LA UNIDAD DEBE ESTAR DESCONECTADA DEL SUMINISTRO DE GAS Y DE ELECTRICIDAD ANTES DE REALIZAR LA Paso 2 ADVERTENCIA: Peligro de electrocución Paso 3 El electrodo y el sensor no se pueden ajustar. NO cambie la ubicación ni la posición como parte de este juego de conversión.
  • Page 38 Figura 2 10" 4" Gas Natural N.G. L.P. Propano Paso 10 Paso 5 Paso 6 Disminuir la presión Aumengtar la Contra horario presión Horario Paso 7 Paso 11 Paso 8 Paso 9 Paso 12...
  • Page 39 Figura 3 Figura 4 PRESIONES DE ENTRADA: Paso 13 Gas Natural Propano Paso 14 Figura 5 Figura 6 Paso 15 Paso 16...
  • Page 41: Lista De Partes

    LISTA DE PARTES: 60105 60105 60022 60021 60141 60141 60155 60045 60045 60046 60046 60156 60156 60128 60128 60025 60025 60147 60146 60015 60015 60031 60031 60020 60020 60130 60140 60157 60157 60075 60075 60080 60080 60100 60100 60103 60103 60065 60068 60070...
  • Page 43 LISTA DE PARTES: 60200 60201 60202 60203 60204 60205 60206 60207 60208 60210 6021 1 60103 60160 60144 60213 60214 60215 60216 60217 60031 60015 60022 28735 28788 60025 60105 60223 60046 60141 60224 60155 60225 60226 60156 60227 60128 60132 60158 60228...
  • Page 44: Instrucciones De Uso Y

    INSTRUCCIONES DE USO Y MANUAL DEL USUARIO ® LEA CUIDADOSAMENTE LAS INSTRUCCIONES: ADVERTENCIA: COMPRAS:...
  • Page 45: Pour Votre Sécurité

    RADIATEUR COMPACT ® LIRE ATTENTIVEMENT CES INSTRUCTIONS : AVERTISSEMENT : agence de service ou le fournisseur de gaz. QUE FAIRE SI VOUS SENTEZ DU GAZ immeuble. service ou par le fournisseur de gaz. POUR VOTRE SÉCURITÉ : 60185...
  • Page 46: Information Générale

    AVERTISSEMENT: AVERTISSEMENT : AVERTISSEMENT : AVERTISSEMENT : AVERTISSEMENT : 125K unit 80K Unit 50K Unit V/A/H/Phase BTU Input BTU output Efficiency % LANGUES INFORMATION GÉNÉRALE WWW.MRHEATER.COM...
  • Page 47: Vue Du Haut

    (N-GAZ NATUREL, P-PROPANE) SUPPORTS POUR FENTES POUR LE MONTAGE ACCROCHAGE (typique) 8 x 76 mm (5/16 x 3 po) DÉBIT ÉCHANGEUR DE CHALEUR (ACIER CALORISÉ) VUE DU HAUT HANGING ENTRÉES POUR ÉLECTRICITÉ BRACKETS (2) PERSIENNES ADJUSTABLE SORTIE DES ÉMANATIONS LOUVERS ENTRÉE DE GAZ SERVICE SERVICE...
  • Page 48 EXPÉDITION TABLEAU 1 DÉGAGEMENTS tableau 1. INSTALLATIONS DANS LES GARAGES :...
  • Page 49: Air De Combustion Et De Ventilation

    MISE EN GARDE : figure 1 AÉRATION GÉNÉRALES REMARQUE : figure 1. FIGURE 1 INSTALLATION DU RADIATEUR COMPACT TIGES DE SUPPORTS DE SUPPORT MONTAGE (2) COMMERCIALES ET RÉSIDENTIELLES figure 2 A - Exigences et recommandations AIR DE COMBUSTION ET DE VENTILATION...
  • Page 50 VENT TERMINATION ON SINGLE WALL VENT tableau 2. SINGLE WALL TERMINATION ROOF FLASHING ROOF PITCHED FROM 0 TO 4 CLEARANCE SHALL NOT BE A THIMBLE CONCEALED SPACE DOUBLE WALL (TYPE B-1) TERMINATION ROOF FLASHING ROOF PITCHED FROM 0 TO 4 12 MAX CLEARANCE TO BE AS SPECIFIED ON TYPE...
  • Page 51 figure 6 figure 3. A - Exigences MAÇONNERIE figure 4. TRANSITION DES ÉMANATIONS (FIXÉE) FIGURE 4 CONDENSATE DRAIN THROUGH TEE PIPE AND DRAIN LOOP UPWARD SLOPE ON HORIZONTAL VENT-COMMERCIAL INSTALLATION CATEGORY III VENT ACCORDING TO THESE INSTALLATION INSTRUCTIONS. SLOPE: + 1/4 INCH FOR 1 FOOT RUN MINIMUM. 12 INCHES MIN.
  • Page 52 HORIZONTAL VENTING - RESIDENTIAL INSTALLATION INDUCED DRAFT BLOWER UPWARD SLOPE 12 INCHES MIN. (30.5CM) FLUE TRANSITION (PROVIDED) VENT TERMINATION CAP LISTED THIMBLE THROUGH COMBUSTION WALL CATEGORY III VENT ACCORDING TO THESE INSTALLATION INSTRUCTIONS. SLOPED: + 1/4 INCH FOR 1 FOOT RUN MINIMUM. NOTE - MINIMUM HORIZONTAL LENGTH 5FT.
  • Page 53: Connexions Électriques

    APPAREIL NOIR NOIR BLANC CONNEXIONS ÉLECTRIQUES BLANC REMARQUE : FIL NOIR AVEC DU RUBAN BLANC OU FIL BLANC SANS RUBAN FIGURE 7 ROBINET MANUEL ÉCOULEMENT DU GAZ POINT DE PURGE FIGURE 8 REMARQUE : figure 7. PRINCIPAL NE PEUT PAS SOUTENIR LA PRESSION ROBINET DE NORMALE DE TEST...
  • Page 54: Raccordement Du Gaz

    AVERTISSEMENT ou la mort. Ne pas utiliser ce radiateur si quelque pour inspecter le radiateur et pour remplacer toute IMPORTANT : partie du système de contrôle, et tout contrôle de AVERTISSEMENT figure 9. REMARQUE : AVERTISSEMENT DÉMARRAGE ET OPÉRATION AVERTISSEMENT RACCORDEMENT DU GAZ AVERTISSEMENT : POUR PRÉVENIR UN DOMMAGE AU RADIATEUR: OPÉRATION DU ROBINET DE GAZ POUR UN ROBINET...
  • Page 55: Haute Altitude

    figure 10). TABLEAU 3 AJUSTEMENT DES PERSIENNES LIMITEUR DE RETOUR DE FLAMME HAUTE ALTITUDE tableau 4 tableau 45...
  • Page 56 PASSAGE DES ÉMANATIONS ET CABINET DES ÉMANATIONS DÉBIT DU GAZ PRESSION DU GAZ figure 10. SERVICE ÉLECTRICITÉ MISE EN GARDE : ÉMANATIONS ET CHEMINÉE...
  • Page 57 White OPTIONAL THERMOSTAT INSTALLATION DIAGRAMME EN ÉCHELLE...
  • Page 58 INSTRUCTIONS POUR LA CONVERSION DE CARBURANT Section 1 ENSEMBLES DE CONVERSION DE CARBURANT Pour la conversion de gaz naturel à GPL 13575 1 1727 13576 Pour la conversion de gaz naturel à GPL 13575 1 1727 13576...
  • Page 59 Section 2 INSTRUCTIONS POUR LA CONVERSION DE CARBURANT Figure 1 Étape 1 Étape 2 AVERTISSEMENT : Risque de choc Étape 3 ou la position comme une partie de cet ensemble de conversion. Étape 4...
  • Page 60 Figure 2 10" 4" Gaz naturel N.G. L.P. Étape 5 Étape 10 Étape 6 Étape 7 Diminuer la pression - Augmenter la sens antihoraire pression - sens horaire Étape 8 Étape 11 Étape 9 Étape 12...
  • Page 61 CLASSIFICATION Figure 3 Figure 4 Étape 13 Gaz naturel Propane Figure 5 Figure 6 Étape 14 Étape 15 Étape 16...
  • Page 62 MHU 50/80...
  • Page 63 60105 60105 60022 60021 60141 60141 60155 60045 60045 60046 60046 60156 60156 60128 60128 60025 60025 60147 60146 60015 60015 60031 60031 60020 60020 60130 60140 60157 60157 60075 60075 60080 60080 60100 60100 60103 60103 60065 60068 60070 60072 60110 60112...
  • Page 64 de modèle MHU 125...
  • Page 65 60200 60201 60202 60203 60204 60205 60206 60207 60208 60210 6021 1 60103 60160 60144 60213 60214 60215 60216 60217 60031 60015 60022 28735 28788 60025 60105 60223 60046 60141 60224 60155 60225 60226 60156 60227 60128 60132 60158 60228...
  • Page 66: Garantie Limitée

    ® LIRE ATTENTIVEMENT CES INSTRUCTIONS : AVERTISSEMENT : APPROVISIONNEMENT : POUR DES INFORMATIONS CONCERNANT LE SERVICE GARANTIE LIMITÉE :...

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Mhu 80Mhu 125

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