Quote:
Originally Posted by ChuckS
If I read your second post right then YES with the winterize valve in horizontal position labeled ON the water pump will draw liquid into the water system lines and not the water tank... it’s working exactly like it should.
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Thanks, but I'm not sure I follow this. Since purchase, over the course of the summer, the winterize valve has remained in the vertical position as shown in my photo, with the RV Park water connected to the "City water connection." And we had normal water flow all summer with nothing filling the tank as expected.
Now it is time to winterize the system until spring. I just went out there in the 31 degree morning air, disconnected the water again and this time for sure, I connected the air compressor hose to the city water inlet, and turned on the outside shower. Water came out briefly and then started to spit compressed air. Then I turned the "winterize" switch to the horizontal position. It made no difference... air continued to spit out the shower fitting.
So apparently blowing out the lines could work either way. But I was left wondering what the "winterize" switch is designed to do? Again it is not explained in the manual.... thanks Keystone! But I called the local dealer RV Corral and talked to a service guy who explained it... that "winterize" switch is connected to a clear hose somewhere behind or below which you stick into an antifreeze bottle and when you turn it on, then it is supposed to suck up antifreeze into the lines. SO it sounds like Tbos nailed it in the first comment above. It is supposed to be a convenience as opposed to the time honored practice of disconnecting the water pump intake and sticking that in a bottle of antifreeze which I have done in the past with other RV's. Since I am now using compressed air, I do not need to worry about it and can leave it off.
He also mentioned a caution about blowing out the toilet... sometimes apparently even after they blow air thru the lines and no water is forthcoming any more, a small amount of water has remained in the valve and it cracked over the winter. I told him I replaced the OEM toilet in both my rigs with the Dometic 320 with sprayer hose and they said they had not had this problem with that one... only with the 310. So, a word to the wise for you Dometic 310 owners.