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Old 11-19-2013, 06:30 PM   #11
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only1stegall's Avatar
Join Date: Nov 2013
Location: upstate SC
Posts: 7
Originally Posted by gljurczyk View Post
Well now you need to find out if the limit is good by temp at the limit location. I find it hard to understand how a 26' unit has only two ducts in it. Not that I doubt you. I'm just not familiar with your unit and this is the first time I heard about only 2 ducts. A 4" duct will only carry about 80 cfm depending on the static pressure. Do you have a return air? I ask you that because mine did not have one when I bought it. they seemed to forgot to install it. I had to take it back to the dealer to have them cut one in. Sorry I didn't catch the part that you had a meter on the limit when it opened and broke the circuit to the valve. You might want to also call Suburban and ask what temp the high limit is set for. Or as OC said jumper it out and see if it stays on. You must be getting heat out of registers thats pretty hot to open your upper limit.
Yes it has return. I spent a little time today. The limit opens at around 170.. seems legit to me. Im going to go ahead with the add some vents plan.... I agree, 180 cfms or less isn't enough for a 20k BTU furnace.

Grey wolf is a value brand.... get what you pay for I guess!

Allen Stegall - Upstate SC
2014 Greywolf 26BDH
2004 Suburban 2500 496 , Curt XD, main tow rig, LBZ candidate
15,000 pounds of fun rolling down the road!
Back up rigs : 01 Yukon XL 1500, 07 Yukon 1500, 04 Sierra 2500
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