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1. | A O Smith Water Heater FMD 40 ManualInstruction Manual RESIDENTIAL DIRECT VENT GAS WATER HEATERS FOR USE ONLY IN MANUFACTURED HOMES FOR USE ONLY WITH VENTING SYSTEMS SUPPLIED WITH THE WATER HEATER WHETHER A NEW INSTALLATION OR A REPLACEMENT INSTALLATION. CANADIAN MANUAL AN ODORANT IS ADDED TO THE GAS USED BY THIS WATER HEATER. For Your Safety ALL TECHNICAL AND WARRANTY QUESTIONS: SHOULD BE DIRECTED TO THE LOCAL DEALER FROM WHOM THE WATER HEATER WAS PURCHASED. IF YOU ARE UNSUCCESSFUL, PLEASE WRITE TO THE COMPANY L... Brands:A | User Manual | ENGLISH | [View] | ||||||||||