Question about Dayton (3E379) Heater

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Dayton Fuel Trimmer Shop Heater

I inherited this heater when I moved into the shop. Previous owner installed the flue pipe INSIDE the rear flange. Is this correct, or should it be installed on the outside so it butts up agains heater housing? Also, what is the flue flange diameter. I have no manuals ore model information, so a range of ansers may be useful. Thanks.
Dennis Roberts

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Re: Dayton Fuel Trimmer Shop Heater

Flue diameter is 4 inch
Propane Unit Heater, BtuH Input 30000, Full Load Current 2.1 Amps, Gas Inlet 1/2 Inch, Flue Diameter 4 R,V, Motor Power Rating 1/30 HP, Free Air Flow 700 CFM, Height 27 1/2 Inches, Depth 27 5/8 Inches, Width 14 Inches, OC Mounting 8 5/8 Inches, 115 Volts, Energy Saving

Posted on Nov 21, 2007

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If my description of what your heater is doing please read through to the end.

The heater is turned on and a room temperature is selected.
You can hear the noise of a small fan start, which shortly after the heater starts.
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Have the balanced flue checked for blockages, the problem will most likely be in the flue pipe which draws the outside cool air into the heater and not the flue pipe which blows out the hot air.
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