Bradford White M-I-MH40T6FLX - Manual (Page 29)

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Maintenance continued-
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.
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.
10. The vent system must be inspected at least once a year to ensure against leakage
of exhaust products
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.
READ THE WARRANTY FOR A FULL EXPLANATION OF THE LENGTH OF TIME
THAT PARTS AND THE WATER HEATER ARE WARRANTED.
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.
WARNING
THIS WATER MAY BE HOT.
WARNING
Do not run out of propane gas. Damage to the water heater may occur.
CAUTION
FOR YOUR SAFETY, DO NOT ATTEMPT REPAIR OF COMBINATION GAS
CONTROL, BURNERS OR GAS PIPING. REFER REPAIRS TO A
QUALIFIED SERVICE TECHNICIAN.