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WINTERIZING THE SURBURBAN WATER HEATER MODEL SW6D
DRAINING AND STORAGE INSTRUCTIONS:
If RV is to be stored during Winter months, the Water Heater must be drained to prevent damage from freezing.
1. Turn off electrical power to Water Heater either at the switch from the electrical element or at Breaker.
2. Shut off gas supply to Water Heater.
3. Turn off Pressure Pump on Water System.
4. Open both Hot and Cold Water Faucets.
5. Remove Anode Rod from tank.
6. Follow RV Manufacturer’s instructions for draining entire Water System.
NOTE: Be certain to refill Water Heater with water and remove all air from tank and lines before re-lighting or
before turning on electrical power.
If your Water Heater Plumbing System is equipped with a by-pass kit, use it to close off the Water Heater, drain
the Water Heater completely, and leave the Water Heater closed off (out of the system) in the by-pass position –
particularly if you are introducing antifreeze in to the plumbing system. Antifreeze can be very corrosive to the
Anode Rod creating premature failure and heavy sediment in the tank. If the plumbing system is not equipped
with a by-pass kit, and you intend to Winterize by adding antifreeze to the system, remove the Anode Rod
(storing it for the Winter) and replace it with a ¾” drain plug.
WARNING! Hydrogen gas may result if you have not used this heater for two weeks or more.
HYDROGEN GAS IS EXTREMELY FLAMMABLE. To reduce the risk of injury under these
conditions, open the hot water faucet for several minutes at the kitchen sink before you use any electrical
appliance connected to the hot water system. If hydrogen is present, you probably will hear an unusual
sound such as air escaping through the pipe as the water begins to flow.
Hydrogen gas may be present even after water has been drained from the tank. Open faucet at sink and
allow system to vent for several minutes (5-10 minutes).
Do not smoke or have any open flame near the open faucet. Do not attempt to light pilot or main burner.
On DSI models, be sure the switch is “OFF”.
