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Old 04-29-2015, 06:17 PM   #1
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Oasis summer loop

I'm new to this system and trying to understand it. I read Don's April 7 explaination and have a question. The tech at our dealership stated that when not requiring heat (winter), the switch on the "zone board" should be in the bypass mode. This prevents fluid from circulating through the heat exchangers.

However, Don's post says by turning off the heat function on Z 1 and 3 will stop heat through the exchangers and leave the bypass switch in the off position.

Who's right.

Greg
2015 DS 4369
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Old 04-29-2015, 06:46 PM   #2
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Don is correct ... here is another thread about it. Bypass switch stays in the off position.

Oasis heat questions

Steve
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Old 04-29-2015, 09:02 PM   #3
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Summer mode is automatic when the thermostat is not in furnace mode.
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Old 04-29-2015, 10:16 PM   #4
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Oasis summer loop

Quote:
Originally Posted by gjbeels View Post
I'm new to this system and trying to understand it. I read Don's April 7 explaination and have a question. The tech at our dealership stated that when not requiring heat (winter), the switch on the "zone board" should be in the bypass mode. This prevents fluid from circulating through the heat exchangers.



However, Don's post says by turning off the heat function on Z 1 and 3 will stop heat through the exchangers and leave the bypass switch in the off position.



Who's right.



Greg

2015 DS 4369

The tech is incorrect. The bypass switch should NEVER be set to ON in normal usage.

The exact opposite will occur if you switch the bypass switch ON. Heat will circulate through the exchanges constantly in bypass mode, making the temperature in the coach rise intolerably in the warm weather. Check out the previously referenced thread - it is about my coach. I had this exact issue when the dealer left my bypass switch ON.

Simply turn the furnace off in all your zones and Summer loop will automatically be engaged.
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