A.O. Smith FMV-40 - Manual

5 tYpIcal InstallatIons Get to Know Your water heater - Gas Models a vent pipe B drafthood c anode d hot water outlet e outlet f roof jack G Gas supply h Manual Gas shut-off valve I Ground joint union * Install In accordance wIth local codes. * drIp leG as requIred BY local codes. fIGure 1. j drip l...

7 facts to consIder aBout the locatIon This manufactured home gas-fired water heater is for use in a manufactured home. You should carefully choose an indoor location for the new water heater, because the placement is a very important consideration for the safety of the occupants in the building and...

8 Also, the water heater must be located and/or protected so it is not subject to physical damage by a moving vehicle. This water heater must not be installed directly on carpeting. Carpeting must be protected by metal or wood panel beneath the appliance extending beyond the full width and depth of ...

9 securInG water heater to floor and wall The water heater must be secured to the floor and to the wall of the enclosure with the three mounting brackets and screws packaged in the carton with the water heater. The two small brackets stamped #0110064 are used to attach the water heater to the floor ...

10 The water within the water heater tank expands as it is heated and increases the pressure of the water system. If the relieving point of the water heater’s temperature-pressure relief valve is reached, the valve will relieve the excess pressure. the temperature-pressure relief valve is not intend...

11 This heater is provided with a properly certified combination temperature - pressure relief valve by the manufacturer. The valve is certified by a nationally recognized testing laboratory that maintains periodic inspection of production of listed equipment of materials as meeting the requirements...

12 To fill the water heater with water: 1. Close the water heater drain valve by turning the handle to the right (clockwise). The drain valve is on the lower front of the water heater. 2. Open the cold water supply valve to the water heater. note: the cold water supply valve must be left open when t...

13 Chemical vapor corrosion of the flue and vent system may occur if air for combustion contains certain chemical vapors. Spray can propellants, cleaning solvents, refrigerator and air conditioner refrigerants, swimming pool chemicals, calcium and sodium chloride, waxes, bleach and process chemicals...

14 Connecting the gas piping to the gas control valve of the water heater can be accomplished by either of the two methods shown in Figures 9 and 10. sedIMent traps A sediment trap shall be installed as close to the inlet of the water heater as practical at the time of water heater installation. The...

18 19. Push the propane gas pilot assembly grommet out of the inner door towards the combustion chamber. 20. To install the natural gas pilot assembly, pull the igniter wire, thermostat lead, and pilot tube through the inner door hole. Reinstall the Phillips-head screw securing the TCO bracket too t...

21 InstallatIon checKlIst Before lIGhtInG the pIlot: 1. Check the gas lines for leaks. a. Use a soapy water solution. DO NOT test for gas leaks using a match or open flame. b. Brush the soapy water solution on all gas pipes, joints and fittings. c. Check for bubbling soap. This means you have leak. ...

22 For the RobertShaw control, turn the water temperature dial counterclockwise ( ) to decrease the temperature, or clockwise ( ) to increase the temperature. Should overheating occur or the gas supply fail to shut off, turn off the manual gas control valve to the appliance. fIGure 29. roBertshaw te...

23 for Your InforMatIon start up condItIons draft hood operatIon C h e c k d r a f t h o o d o p e r a t i o n b y p e r f o r m i n g a w o r s t c a s e depressurization of the building. With all doors and windows closed, and with all air handling equipment and exhaust fans operating such as furna...

25 ventInG sYsteM InspectIon At least once a year a visual inspection should be made of the venting system. You should look for: 1. Obstructions which could cause improper venting. The combustion and ventilation air flow must not be obstructed. 2. Damage or deterioration which could cause improper v...

27 1. Turn the gas control knob to the “OFF” position. 2. CLOSE the cold water inlet valve to the water heater. 3. OPEN a nearby hot water faucet and leave open to allow for draining. 4. Connect a hose to the drain valve and terminate to an adequate drain. 5. OPEN the water heater drain valve to all...

28 leaKaGe checKpoInts Read this manual first. Then before checking the water heater make sure the gas supply has been turned “OFF”, and never turn the gas “ON” before the tank is completely full of water. A. Water at the draft hood is water vapor which has condensed out of the combustion products. ...

29 30 & 40 Gallon repaIr parts lIst Key No. Part Description *1 Burner Assembly (White-Rodgers)**Burner Assembly (RobertShaw)** *2 Burner Head (Natural Gas)Burner Head (Propane Gas) *3 Burner Orifice (Natural Gas)Burner Orifice (Propane Gas) 4 Burner Tube (White-Rodgers)**Burner Tube (RobertShaw...

30 roBertshaw Burner asseMBlY 1 whIte-rodGers Burner asseMBlY 1 50 Gallon repaIr parts lIst Key No. Part Description *1 Burner Assembly (White-Rodgers)**Burner Assembly (RobertShaw)** *2 Burner Head (Natural Gas)Burner Head (Propane Gas) *3 Burner Orifice (Natural Gas)Burner Orifice (Propane Gas) 4 ...

31 trouBleshootInG GuIdelInes These guidelines should be utilized by a qualified service agent. When calling for service notify the service agent that this is a “Flammable Vapor Ignition Resistant” Product. Problem Cause Solution water leaKs Improperly sealed, hot or cold supply connection, relief v...