78 Trillium 4500 heater not working - Page 2 - Fiberglass RV


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Old 12-26-2014, 09:04 PM   #15
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Forgot to ask - have you had this furnace running before...

I agree with other posters that they can get some air in the lines from sitting, taking forever to get the gas to the pilot again. Keep one of those long BBQ lighters lit to the pilot, the whole time, while pushing & holding in the bypass on the gas valve, while set to "Pilot"... you are doing this, yes?
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Old 01-12-2015, 11:43 AM   #16
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Trillium heater

We had a similar problem with the furnace on our 4500 when we got it. It does seem to take a long time to get the propane through the lines to the furnace. Do as stated earlier (push in the pilot button and hold, use a butane stove lighting device, not a match to light the pilot).

If your pilot lights, but the furnace does not fire, I found it is important to close the little view hole cover before releasing the pilot button, otherwise the pilot blows out.

Read the instructions on the plate at the base of the furnace and good luck.
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Old 01-12-2015, 01:53 PM   #17
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FREE COLEMAN 4312

Our 1979 Jubilee had a Coleman 4312 that has been removed. The fire tube end bracket once was tack welded - now needs a Ship-in-a-Bottle mechanic to put it right. Fan works, new thermocouple, it would light momentarily then blow itself out. Anyone wants to pay shipping can have it.

https://plus.google.com/photos/11521...77398828691521
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Old 01-12-2015, 02:56 PM   #18
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All the smarts of this heater are in the gas valve. If it dies, there is a replacement for a reasonable cost:
Robertshaw® 710-201 Unitrol Gas Valve 710 Series 7000SLC Right Valve® Equivalent

The gas ports are not in the same places as the orignal though, so if you can't bend tube, then get a pro to install.
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Old 01-13-2015, 10:41 PM   #19
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Have a look at the battery if it not supplying 12 volts or more while under load that can cause the gas valve to lock out the furnace.
This is the problem we had with our furnace in the past.
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Old 01-13-2015, 11:05 PM   #20
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Argh
This is a gravity furnace. The only thing that a battery is going to do is to provided a little light on the situation!
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Old 01-14-2015, 09:46 AM   #21
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The fact that this furnace consumes no electricity is what first got me interested in Trilliums.

It should be noted that there is an optional blower fan though.
Trillium Furnaces - 9-3608 Blower
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Old 01-14-2015, 12:19 PM   #22
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I stand corrected. Now I am even more interested in getting myself a Trillium. Our Tent trailer has a furnace and requires full voltage or will not opperate as mentioned above.

Thanks for the education.
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Old 01-14-2015, 12:56 PM   #23
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The fact that the furnace consumes no electricity comes at a cost. It is somewhat less efficient. The claimed 7000 BTU output may be optimistic, or assumes that the blower fan is installed.

These furnaces are not available today. As I understand it, the surface temp is too high.
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Old 01-14-2015, 03:46 PM   #24
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I think I can safely assume mine never came with a heater? And maybe this electric one was installed afterward? Have no idea but it's not a gas heater. These are the best pics I can find for right now.

Dave - here are the pics. I hope they attach fine?

Thanks for looking!
Attached Thumbnails
trillium info.jpg   trillium heater.jpg  

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Old 01-14-2015, 03:53 PM   #25
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I am assuming that is in the gaucho bench, beside the door. I have never seen one like that before.
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Old 01-14-2015, 08:16 PM   #26
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Yes, that is the gaucho on the right when entering the trailer. I wonder if anyone else has one like this.
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Old 01-27-2015, 09:59 PM   #27
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Mine is under the rear seat on the passenger side


Sent from my iPad using Fiberglass RV
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Old 01-28-2015, 05:35 AM   #28
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Thanks Doug - is yours electric or propane? I'm sure ours is original - not much has been changed on the interior or even on the exterior.
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