Bradford White RG1D Installation & Operation Instructions page 27

Maintenance continued-
Do not run out of propane gas. Damage to the water heater may occur.
6. At least once a year, check the combination temperature and pressure
relief valve to ensure that the valve has not become encrusted with lime.
Lift the lever 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 water
heater 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.
When lifting the lever on 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.
9. A combination sacrificial anode rod/hot water outlet nipple has been
installed to extend tank life. The anode rod should be inspected
periodically (at least 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.
WARNING
WARNING
This water may be hot.
WARNING
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