Thermo Products MHA1-50N User Manual

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INDUCED DRAFT HIGHBOY AND 
COUNTERFLOW/HORIZONTAL  
GAS FURNACE 
 
INSTALLATION AND SERVICE MANUAL 
MODELS 
 MHA1-50N 
MDA1-50N 
                                    MHA1-75N 
MDA1-75N 
                                    MHA1-100N 
MDA1-100N      
                                    MHA1-125N 
MDA1-125N 
 
IF YOU DO NOT FOLLOW THE SAFETY PRECAUTIONS BELOW AND IN THIS MANUAL, 
A FIRE OR EXPLOSION MAY RESULT CAUSING PROPERTY DAMAGE, PERSONAL INJURY, OR 
LOSS OF LIFE. 
DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS AND LIQUIDS IN THE 
VICINITY OF THIS OR ANY OTHER APPLIANCE. 
 
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 NEIGHBOR’S PHONE. FOLLOW THE GAS 
SUPPLIER’S 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. (REFERRED TO IN THESE INSTRUCTIONS AS A QUALIFIED 
HEATING CONTRACTOR). 
 
PLEASE READ THESE INSTRUCTIONS PRIOR TO INSTALLATION, INITIAL FIRING, AND BEFORE 
PERFORMING ANY SERVICE OR MAINTENANCE. THESE INSTRUCTIONS MUST BE LEFT WITH 
THE HOMEOWNER AND SHOULD BE RETAINED FOR FUTURE REFERENCE BY 
QUALIFIED SERVICE PERSONNEL. 
THERMO PRODUCTS, LLC. 
BOX 217 
MG-1008 
NORTH JUDSON, IN 46366 
ECN 4283-MA 
PHONE: (574) 896-2133 
 
 
 
MADE IN USA