Jayco Conventional Travel Trailer Owner's Manual page 40

Method 2
This method utilizes a water heater bypass kit, available in most units, to avoid filling the
entire water heater with antifreeze.
1. Turn off the pump.
2. Close valves A, B and D. Open valves E and C. (Fig. 4-8)
3. Drain the water heater and fresh water tank. (Consult the water heater owner's
manual for details.)
4. Put the hose from valve E into a jug of NON-TOXIC RV antifreeze. You will need
more than one gallon of antifreeze.
5. Turn on the pump and open each faucet until the antifreeze flows through. Do not
forget to run the antifreeze through the toilet.
6. Pour at least one cup of antifreeze into each drain to protect the P-traps.
7. Close valve E.
8. Before using the water system again, drain and flush the water system. Close valve
C and open valves D, A, and B. Sanitize and flush the whole system. It is now ready
for use.
To winterize: Valves A, B, and D are closed; E and C are open.
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Figure 4-8