Regal 42SC Owner's Manual page 340

WATER SYSTEM-FRESH
1. Turn on the fresh water pump switch.
2. Open all faucets including transom shower and allow
tank to empty.
3. Drain the water heater; shut off water pump switch.
4. Mix nontoxic antifreeze with water in accordance with
the manufacturer's recommendations.
5. Pour solution into the fresh water tank.
6. Turn on fresh water pump switch.
7. Open each cold water faucet one by one beginning
with the one furthest away from the tank and purge the
system until a steady stream fl ows from the faucet. Then
close the faucet.
8. Repeat step 7 for hot water faucets.
9. Shut off water pump switch.
10. Pour a quart of antifreeze into shower drain. Run
the shower pump until a steady stream fl ows from the
discharge fi tting.
11. Leave at least 2 gallons of antifreeze solution in the
holding tank during storage.
8
Chapter 10