HOWTO: Water System Winterizing
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© 2016 by Erwin Hymer Group North America, Inc.
Water tank fill location
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• Turn off the breaker in the 120 volt circuit breaker box which powers the instant hot
water heater.
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• Turn on the water pump.
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• Turn on the cold water in the galley sink until pink RV antifreeze emerges from the
faucet. Close the faucet.
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• Press the toilet flush pedal until pink antifreeze comes out.
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• Turn on the bathroom sink cold water faucet until pink RV antifreeze emerges from the
faucet. Close the faucet.
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• Press and hold the cold handle on the instant hot water dispenser until undiluted pink
RV antifreeze emerges from the faucet. Then do the same thing with the hot handle.
You will be filling the hot water reservoir with antifreeze, which takes approximately a
gallon, so this may take some time.
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• Open the city water valve for about 60 seconds to flush the water fill line with
antifreeze.
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• Turn the water pump off. Open a faucet to relieve pressure.
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• In the cabinet under the convection oven there is a water filter for the instant hot water
dispenser. After running antifreeze through the system, twist and remove this filter. Empty the contents of this filter into
the sink, then reinstall the old filter. Buy a new filter to have on hand for dewinterizing in the spring, but do NOT install it
until you have purged all the antifreeze from the system. This filter should be replaced annually, so it's most convenient to
replace it at the time of dewinterizing.