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8

MFH-I&S-02

6. At least once a year, check the combination temperature and pressure

relief valve to insure that the valve has not become encrusted with lime.
Lift the lever at the lever at the top of the valve several times until the
valve seats properly without leaking and operates freely.

7. Monthly drain off a gallon of water to remove silt and sediment.

8. If the combination temperature and pressure relief valve on the appliance

discharges periodically, this may be due to thermal expansion in a closed
water supply system.  Contact the water supplier or local plumbing inspector
on how to correct this situation. Do not plug the combination temperature
and pressure relief valve outlet.

 WARNING

When lifting lever of the combination temperature and pressure
relief valve, hot water will be released under pressure. Be
careful that any released water does not result in bodily injury
or property damage.

 CAUTION

FOR YOUR SAFETY, DO NOT ATTEMPT REPAIR OF COMBINATION GAS CONTROL,
BURNERS OR GAS PIPING. REFER REPAIRS TO A QUALIFIED SERVICE TECHNICIAN.

 WARNING!  THIS WATER MAY BE HOT.

9. A combination sacrificial anode rod/hot water outlet nipple has been

installed to extend tank life. The anode rod should be inspected periodically
(every 2 years) and replaced when necessary to prolong tank life. Water
conditions in your area will influence the time interval for inspection and
replacement of the anode rod. Contact the plumbing professional who
installed the water heater or the manufacturer listed on the rating plate for
anode replacement information. The use of a water softener may increase
the speed of anode consumption. More frequent inspection of the anode
is needed when using softened (or phosphate treated) water.

Contact your supplier or plumbing professional for replacement parts or contact
the company at the address given on the rating plate of the water heater.

Provide the part name, model and serial numbers of the water heater when
ordering parts.

    

          4-08/Printed in USA

TYPICAL INSTALLATION - VENTING

Figure 4

Summary of Contents for MFH-I&S-02

Page 1: ... instructions see page 8 No other components are approved for use with this water heater This water heater has been designed and certified for the purpose of heating potable water The installation and use of this water heater for any purpose other than the heating of potable water may cause damage to the water heater create a hazardous condition and nullify the warranty Do not use this appliance i...

Page 2: ...water heater The drain pan as described above can be purchased from your plumbing professional The drain pan must be piped to an adequate drain The piping must be at least 3 4 inch 1 9 cm in diameter and pitched for proper drainage It is recommended that a minimum clearance of 4 inches 10 2 cm be provided on the side of the water heater for servicing and maintenance of the combination temperature ...

Page 3: ...w the underside sheathing and secure with the screws provided THE BOTTOM OF THE AIR INTAKE MUST BE AT LEAST 12 30 5cm ABOVE THE GROUND LEVEL 4 Seal the openings around the air intake and underside sheathing to resist the entrance of rodents 5 Position the water heater so it is centered above the air intake Note The water heater should also be centered with the openings in the roof and ceiling to a...

Page 4: ...al minutes at the kitchen sink before you use any electrical appliance which is connected to the hot water system If hydrogen is present there will be an unsual sound such as air escaping through the pipes as hot water begins to flow Do not smoke or have open flame near the faucet at the time it is open WARNING For protection against excessive temperatures and pressure install temperatureandpressu...

Page 5: ...mustbeisolatedfromthegassupply piping system by closing its manual shut off valve during any pressure testing of the gas supply system at test pressures equal to or less than psi 3 5kPa The supply line must be capped when not connected to the water heater 3 Change the pilot regulator by removing thermostat dial and pilot regulator cap Depress and rotate knob clockwise to the L P setting using a sc...

Page 6: ...red home mobile home TO FILL THE WATER HEATER 1 Close the water heater drain valve by turning the knob clockwise 2 Open the cold water supply shut off valve 3 Open several hot water faucets to allow air to escape from the system 4 When a steady stream of water flows from the faucets the water heater is filled Close the faucets and check for water leaks at the water heater drain valve combination t...

Page 7: ...verheating Should overheating occur or the gas supply fail to shut off turn off the manual gas control valve to the appliance and call qualified service technician Note Whenever the water heater is filled with cold water condensate will form on the cool tank surface and drops of water will fall on the hot burner and combustion chamber surfaces producing a sizzling noise Condensation is normal and ...

Page 8: ... FOR YOUR SAFETY DO NOT ATTEMPT REPAIR OF COMBINATION GAS CONTROL BURNERS OR GAS PIPING REFER REPAIRS TO A QUALIFIED SERVICE TECHNICIAN WARNING THIS WATER MAY BE HOT 9 A combination sacrificial anode rod hot water outlet nipple has been installed to extend tank life The anode rod should be inspected periodically every 2 years and replaced when necessary to prolong tank life Water conditions in you...

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