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Re: [GMCnet] Adding rooftop AC [message #196802]

Tue, 29 January 2013 21:30

Edward Jarmul

Messages: 30
Registered: November 2012

Karma: 0

Member

No problem if you have the Dometic or similar Thermostat that automatically
kicks in the propane furnace if the outside temperature drops too low (I
believe it's below 30-32 degrees F). There's also a manual setting to run
off the furnace.

EdJ
77 Coca Cola 26'
73 Glacier 26'
69 Vette
Temporary full time in Martinsburg, WV
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Re: [GMCnet] Adding rooftop AC [message #196809 is a reply to message #196802]

Tue, 29 January 2013 22:08

jimk

Messages: 6734
Registered: July 2006
Location: Belmont, CA

Karma: 9

Senior Member

John,
I have not experienced a Colman heat pump.
Down to what temp. will your unit put out heat?
My Carrier does nothing worthwhile once the ambient temp hits 40.

On Tue, Jan 29, 2013 at 7:30 PM, Edward Jarmul <falcon160244@gmail.com>wrote:

> No problem if you have the Dometic or similar Thermostat that automatically
> kicks in the propane furnace if the outside temperature drops too low (I
> believe it's below 30-32 degrees F). There's also a manual setting to run
> off the furnace.
>
> EdJ
> 77 Coca Cola 26'
> 73 Glacier 26'
> 69 Vette
> Temporary full time in Martinsburg, WV
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>

--
Jim Kanomata
Applied/GMC, Fremont,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502

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Re: [GMCnet] Adding rooftop AC [message #196812 is a reply to message #196802]

Tue, 29 January 2013 22:26

k2gkk

Messages: 4452
Registered: November 2009

Karma: -8

Senior Member

Even a water-based heat-pump won't do much
if that water gets below 40 F!

That's the way MOST marine air conditioning
systems work and you need to add some sort
of electrical or LP gas heating when you
get to that point.

An electric blanket of a good mummy type of
sleeping bag (or a warm significant other)
will be very helpful if you get down below
freezing!

And don't think it is safe to just light the
cooking stove or oven to heat your coach! It
isn't safe and the moisture it will add to
the inside of the coach will be huge!

~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
~~ ~ D C "Mac" Macdonald ~ ~~
~ ~ Amateur Radio - K2GKK ~ ~
~ ~ USAF and FAA, Retired ~ ~
~ ~ ~ Oklahoma City, OK ~ ~ ~
~~ ~ ~ "The Money Pit" ~ ~ ~~
~ ~ ~ ~ TZE166V101966 ~ ~ ~ ~
~ ~ ~ '76 ex-Palm Beach ~ ~ ~
~ www.gmcmhphotos.com/okclb ~
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
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> Date: Tue, 29 Jan 2013 22:30:40 -0500
> From: falcon160244@gmail.com
> To: gmclist@temp.gmcnet.org
> Subject: Re: [GMCnet] Adding rooftop AC
>
> No problem if you have the Dometic or similar Thermostat that automatically
> kicks in the propane furnace if the outside temperature drops too low (I
> believe it's below 30-32 degrees F). There's also a manual setting to run
> off the furnace.
>
> EdJ
> 77 Coca Cola 26'
> 73 Glacier 26'
> 69 Vette
> Temporary full time in Martinsburg, WV

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Re: [GMCnet] Adding rooftop AC [message #196819 is a reply to message #196802]

Wed, 30 January 2013 05:19

rcjordan

Messages: 1913
Registered: October 2012
Location: Elizabeth City, North Car...

Karma: 1

Senior Member

>Even a water-based heat-pump won't do much
if that water gets below 40 F! That's the way MOST marine air conditioning
systems work and you need to add some sort
of electrical or LP gas heating when you

Yeah, 40 F is generally considered to be the bottom for even land-based heat pumps. All my units are set to kick in supplemental heat at that point.

SOLD 77 Royale Coachmen Side Dry Bath
76 Birchaven Coachmen Side Wet Bath
76 Eleganza
Elizabeth City, NC

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Re: [GMCnet] Adding rooftop AC [message #196827 is a reply to message #196802]

Wed, 30 January 2013 07:00

SeanKidd

Messages: 747
Registered: June 2012
Location: Northern Neck Virginia

Karma: 4

Senior Member

Thanks to the EPA most exotic fluorocarbons that would offer atmospheric heat extraction below 30 degrees are banned.

Sean and Stephanie
73 Ex-CanyonLands 26' #317 "Oliver"
Hubler 1-Ton, Quad-Bags, Rear Disc, Reaction Arms, P.Huber TBs, 3.70:1 LSD Honda 6500 inverter gen.
Colonial Travelers

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