Airstream NTERSTATE - Manual (Page 73)

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PLUMBING
STORAGE AND WINTERIZING (continued)
For additional winterizing protection, add non-toxic antifreeze (approved for drinking
water systems) to your water lines using the following procedure:
1. Reconnect all lines except the hose to the pump inlet port. Close all drain valves
(See Step 3)
*2. Turn bypass valves to bypass position.
3. Attach a length of hose to the pump inlet port. This piece of hose should be long
enough for the free end to be inserted into and reach the bottom of the antifreeze
container.
4. Dilute the antifreeze solution in accordance with the manufacturer’s instructions.
5. Open all water faucets.
6. Insert hose length into the antifreeze container, turn the pump switch on, and run the
water pump until the antifreeze solution fills all water lines. Flush toilet. Work shower
hand spray while holding down in tub.
7. Shut off the pump and close all faucets.
8. Disconnect the hose length from pump inlet fitting and reconnect water system
inlet line.
*The by-pass valves are located behind the galley cabinet lower door on the Rear Bath
model and under the passenger side lounge on the Mid Bath model.
To access the valves on the Mid Bath model, the recessed panel between the lounge
doors must be removed. Snap the caps off the four screws, remove the screws, and
use the finger hole in the panel to slide it out.
Turn the water heater valves to by-pass flow position. To by-pass the water heater
for winterizing, close valves A and C and open valve B (See illustration). For normal
operation open valves A and C and close valve B.
Waterline
open
close
Shut off valve positions
A
B
C
Hot
Cold