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Old 10-27-2005, 09:48 PM   #1
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1964 22' Safari
Foresthill , California
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Heater use with AC cover installed

I have a Coleman Mach AC unit with electric heater.

Can I safely run the heater with the accessory ADCO vinyl storage cover installed on the roof unit?

The heater is basically a temp probe and electric water heater type element and does not appear to intake or exhaust to the roof .
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Old 10-27-2005, 10:32 PM   #2
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Should work

It should be no problem since the outside unit is not involved; only the inside fan and the heat strip are active. Just make sure you don't switch to AC.
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Old 10-28-2005, 02:23 AM   #3
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Heat Strip - Duh, what is it?

Pahaska et al -

Sorry for the seemingly silly question, but what it a heat strip? And how would I know that I have one? Photo anyone?

Probably another Duh question but you know what "they" say - any question not asked is a Duh question.....

Um....

Axel
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Old 10-28-2005, 07:46 AM   #4
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Many AC units are equipped with a HEAT STRIP. It is essentially a small resistance heater - think hair dryer. It is not NEARLY powerful enough to heat your trailer but it will take the chill off. I cannot be run on 12-volt - it will only work if you are 'plugged in'.

Look at the control knobs on your AC - you are looking for a HEAT setting. Turn it to this position when you are 'plugged in' and see if luke-warm air comes out of the vents on the AC unit.

Hope that helps!
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Old 10-28-2005, 11:39 AM   #5
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Quote:
Originally Posted by SilverToy
Pahaska et al -

Sorry for the seemingly silly question, but what it a heat strip? And how would I know that I have one? Photo anyone?

Probably another Duh question but you know what "they" say - any question not asked is a Duh question.....

Um....

Axel
The heat strip is either on or off. My '01 Safari had one and while it helped, it was always a pain since the thermostat in the A/C unit would not control it. After the trailer got warm I had to manually turn it off and if it cooled down I had to turn it back on. Enough of a pain that I normally turned the furnace on if it was cool enoungh out to cause the need to have occasional heat.

Jack
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Old 10-28-2005, 05:16 PM   #6
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Thanks for the help. I thought I could run it with outside unit covered, just making sure.

It's as SZY8JX described, a small heat element with fan putting out luke warm air. Enough to cut the chill but for real heating the furnace is it. I use it for 3rd heat source and while working on AS when plugged into shore power. The heat strip does keep the trailer at 50F when itís 30F outside.

Temp today is balmy 25F and snowing in Eagle River, Alaska, almost furnace cold.
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Old 10-28-2005, 08:41 PM   #7
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I agree that the heat strip cannot produce a large temperature change, but for fall and winter use, it makes the difference between being comfy and decidedly cool.

With my Excella, I use the heat strip in the old Armstrong as the primary heat and keep the furnace set for 10 degrees below the Armstrong's set point. The heat DOES cycle on off with the rear thermostat. Today I left it running for a fan with the windows and door open, and it first cycled to heat at about 7pm tonight. Right now, it's 51 outside and 78 degrees in the middle of the trailer. The (new) rear thermostat for the furnace is reading 77 degrees in the bedroom.

It's supposed to be 42 tonight. I expect it to be about 72 when I wake up, and the furnace will not have run at all.

One thing that I notice that the Armstrong does that my Carrier Air V does not is slow the fan down to the lowest setting when the heat strip cycles on. This makes the air coming out warm to touch. It is not lukewarm!

The juice is included in the lot rent where I live, so I have to say that I love my heat strip.

Lamar
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