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Old 07-21-2012, 10:59 PM   #1
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A/C

When I run my A/C in zone 1 I get cold air out the vents in zone 2. This makes the zone 1 unit run nonstop when we have the door closed in our bedroom when we have guest. Is this normal. I would think the bedroom vents would just be supplied by the A/C zone 2.
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Old 07-21-2012, 11:18 PM   #2
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When I run my A/C in zone 1 I get cold air out the vents in zone 2. This makes the zone 1 unit run nonstop when we have the door closed in our bedroom when we have guest. Is this normal. I would think the bedroom vents would just be supplied by the A/C zone 2.
Make model and year would help.
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Old 07-21-2012, 11:24 PM   #3
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2011 390rb Berkshire.
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Old 07-22-2012, 12:11 AM   #4
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I'm on my second multi ac motorhome(Damon and Berkshire) and on both there is a central channel for the ducting. There appears to be no barrier between the ducting in zone one and two. I don't know the reason for this, but there must be one.
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Old 07-22-2012, 05:00 AM   #5
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As a work around we opened the air dump on the grate to keep both units cycling all night. We use the MH 90% of the time with just the two of us so having just Z1 running at night is fine. It's a lot quieter that way.
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Old 07-22-2012, 11:04 AM   #6
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When I run my A/C in zone 1 I get cold air out the vents in zone 2. This makes the zone 1 unit run nonstop when we have the door closed in our bedroom when we have guest. Is this normal. I would think the bedroom vents would just be supplied by the A/C zone 2.
Yes-- it is normal. I think it is because the ducting is not segregated between the front and rear at all. I have noticed the same thing with my coach.
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Old 07-22-2012, 11:37 AM   #7
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Same thing in the Georgetown line. I think they did this to enable AC to flow through the whole coach in the event you only have 30 amp service and could only run one AC unit at a time. We set our living area unit a little low during the night so it runs and air still flows into the bedroom but without the louder noise of the unit inside the bedroom running.
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Old 07-22-2012, 04:20 PM   #8
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We have a 2011 390-rb-340 Berkshire. I believe it's setup that way because only zone 1 is a heat pump while zone 2 isn't.
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Old 07-22-2012, 05:46 PM   #9
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We have a 2011 390-rb-340 Berkshire. I believe it's setup that way because only zone 1 is a heat pump while zone 2 isn't.
On my coach, both units have heat pumps.
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Old 07-22-2012, 07:20 PM   #10
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Yours looks like it is a bunk house ours has 1 1/2 baths and really only sleeps 2 although the sofa has an air matress. The rb stands for rear bath. I don't know if 2 heat pumps were an option as we bought our unit off the lot and got what I think was an awesome deal.
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