De-Winterizing the Water Heater and Fresh Water System
1. Close all faucets, water outlets, the water heater drain and pressure relief valve.
2. If during the winterizing procedure the anode was removed and replaced with a 3/4" male pipe
thread drain plug, remove the drain plug and replace with anode.
3. Fill fresh water tanks with fresh water approximately so that 115% to 120% of the water heater
capacity remains in the fresh water tanks.
Example: If water heater is 11 gallons = 12 to 13 gallons in fresh water tanks.
CAUTION
SPECIAL PRECAUTIONS MUST BE USED WHEN DRAINING AND FILLING AN ELECTRIC
WATER HEATER. ELECTRICITY MUST BE TURNED OFF BEFORE DRAINING AND
REFILLING WATER HEATER TANKS.
4. Turn on fresh water pump.
5. Open each faucet and water outlet one at a time until winterizing chemical is no longer
apparent at the opening. This allows the fresh water to flush the winterizing chemicals out of
the fresh water system.
6. Fill fresh water tanks to 100% capacity.
NOTICE
Seaward Products recommends that while filling the fresh water storage tanks that a
small amount of common household bleach be added to the fresh water system to
control the possible growth of algae. If an algae condition starts it is very difficult to
control.
Example: 1 oz of bleach for every 50 gallons of fresh water.
7. Fresh water system is now de-winterized and ready for use.
7