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Old 03-19-2015, 02:31 PM   #1
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Girard tankless

Does anyone know where they place the Gas Modulation Control in the Berkshire 390rb

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Old 03-19-2015, 04:44 PM   #2
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I never heard it called that, but I think what you are looking for is the dial in the 1/2 bath vanity cabinet.

2014 Berkshire 390RB-60
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Old 03-19-2015, 08:05 PM   #3
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what does the gas modulation control do? and what is it for?
2013 Berkshire 390RB DP/360--(Toad)2009 Trailblazer.

3rd generation Disabled Veteran, oldest son is 4th Generation Disabled Veteran...its a family tradition.
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Old 03-20-2015, 06:49 AM   #4
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I looked all over in the main bath figuring it would be near the shower and the heater itself. And of course the boss covered it with stuff in the half bath. The joys of a learning a new motorhome. The GMC is used to adjust the flow of fuel to the heater thus allowing the change of btu. I am told that the variance in temp is 20 degree's to 60 degree's of incoming water temp.
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tank, tankless

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