Running furnace off battery power - Page 2 - Fiberglass RV


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 09-26-2017, 11:23 AM   #15
Senior Member
 
Byron Kinnaman's Avatar
 
Name: Byron
Trailer: 2006 Scamp 13' towed with a 2005 Dodge Dakota 4.7l Magnum W/full tow package (over kill)
Oregon
Posts: 6,433
Registry
Quote:
Originally Posted by Paul Braun View Post
If it is a windows computer hold down the Alt key and type 248 using the numeric keypad. There is an equivalent command on Macs.
Correct.
__________________

__________________
Byron & Anne enjoying the everyday Saturday thing.
Byron Kinnaman is online now   Reply With Quote
Old 09-26-2017, 12:44 PM   #16
Senior Member
 
TomK's Avatar
 
Name: Tom
Trailer: Scamp 16
Michigan
Posts: 857
On a Mac, you hold option (alt) key and type 0 (zero)

I always wanted to do that too. Learn something every day! Woo Hoo!

Tom
__________________

__________________
TomK is offline   Reply With Quote
Old 09-26-2017, 01:14 PM   #17
Senior Member
 
Jon Vermilye's Avatar
 
Name: Jon
Trailer: 2017 Escape 21
Oswego, NY
Posts: 1,501
Registry
Quote:
Originally Posted by TomK View Post
On a Mac, you hold option (alt) key and type 0 (zero)

I always wanted to do that too. Learn something every day! Woo Hoo!

Tom
option 0 =

option/shift 8...

They are different - not sure which is "Official".
Jon Vermilye is offline   Reply With Quote
Old 09-26-2017, 05:37 PM   #18
Senior Member
 
Name: Gerry
Trailer: Boler 13 ft / 31 ft Holiday Rambler
Maine
Posts: 1,254
[QUOTE=stevebaz;663369]In our Scamp 13 with Attwood II furnace I could get 3 nights until the fan wouldn't have enough speed to open the gas valve. We camp in the desert in January for 5 days or so. high 20'sF at night and starts getting cold as sundown approaches. As the darkness approaches the heater goes on and thermostat is set about 68 degrees f and runs through out the night. Roof vent is cracked a bit to let out moisture. It comes on between 4 to 8 times through out the night depending on how cold it really gets. while we are sleeping. I put out my portable solar panels (60 watts total) to recharge the battery by day. When we return to the trailer at dusk the battery is fully charged. Do to our location I have to hang my solar panels off the side of the trailer to collect the low winter sun. Even with the low winter sun my battery is fully charged every day. At night my battery is 12.7 volts and in the morning it is 12.4 or 12.5 when using the heater. I have 1 group 27 walmart battery and all lighting is L.E.D. and I run my DVD player for 2 to 3 hours or more each night. I use foil bubble pack over my windows to cut the draft from the glass.

Wow only 4 or 8 time a night will the furnace come on.?.
When winter camping in the White Mountains of NH and the temps down to the single digits my furnace will turn on about once every 2 minutes threw-out the night.
I have a 79 Boler 13 so it doesn't take long to heat up but it sure does cool down fast too.
Even after insulation was put on floor 2 nights was max.
The fan does tell the gas valve to turn on but it takes power also to turn gas valve on.
With a week battery I will hear fan run... then when gas valve tries to turn on, the fan will slow down but still run.
__________________
Gerry is offline   Reply With Quote
Old 09-26-2017, 06:08 PM   #19
Senior Member
 
Jon Vermilye's Avatar
 
Name: Jon
Trailer: 2017 Escape 21
Oswego, NY
Posts: 1,501
Registry
Obviously, how high you set the thermostat will have a huge effect on battery life on cold nights. When I stayed in Quartzsite last winter I didn't have a concern about battery life since I had 395 watts of solar & a pair of 6V, 232 amp hour batteries. I did want to conserve propane to avoid trips to refill the tanks.

I set the thermostat at 57F, which I found quite comfortable for sleeping under a blanket. Many nights the furnace never came on, but when it did, it ran for a fairly short time (I did have the extra insulation package which includes dual pane windows in my Escape 17). During the middle of winter I was going through a 20 pound tank of propane every 10 - 14 days.

Setting the thermostat at what some would feel a necessary 70F would probably cut that in half, and without solar, put quite a load on a single battery.
Jon Vermilye is offline   Reply With Quote
Old 09-26-2017, 07:31 PM   #20
Senior Member
 
floyd's Avatar
 
Name: Floyd
Trailer: 2004 13 ft Scamp Custom Deluxe
IllAnnoy
Posts: 6,379
Registry
Quote:
Originally Posted by Paul Braun View Post
If it is a windows computer hold down the Alt key and type 248 using the numeric keypad. There is an equivalent command on Macs.
Wow ! I now have a .
Now to what I am able to remember it ....
It was 92F here todayHope it cools off tonight (Maybe 65 or 68)


While experimenting I found all kinds of stuff...
☺☻♥♦♣♠◘○
__________________
floyd is online now   Reply With Quote
Old 09-27-2017, 01:22 PM   #21
Senior Member
 
Name: Steve
Trailer: Scamp 13
California
Posts: 1,517
Quote:
Originally Posted by Gerry View Post

Wow only 4 or 8 time a night will the furnace come on.?.
When winter camping in the White Mountains of NH and the temps down to the single digits my furnace will turn on about once every 2 minutes threw-out the night.
I have a 79 Boler 13 so it doesn't take long to heat up but it sure does cool down fast too.
Even after insulation was put on floor 2 nights was max.
The fan does tell the gas valve to turn on but it takes power also to turn gas valve on.
With a week battery I will hear fan run... then when gas valve tries to turn on, the fan will slow down but still run.
How often the heater runs has a variable difference on where the thermostat is located. I set my thermostat at 70 or so and the trailer starts cooling down pretty quickly but the thermostat is mounted on the cabinet next to where the heater is located so the whole trailer gets up to 70 or slightly higher before the thermostat registers shut off temperature. then the trailer starts cooling down and the last thing in the trailer that cools down is the thermostat hanging in the inner cabinet. So the actual temperature swings in the trailer are far greater than they appear on the thermostat. Using the digital thermostat instead of the mechanical magnetic thermostat that came with the furnace greatly improved the operation of the furnace. Another thing to consider camping in the desert where we do day time temps are in the 70 degrees or so and dropping to a low in the 30's or so its not the same as being 30 or below all day long. 2-1/2, 98 degree heaters (2 people and a dog) in a 6 X 10 foot space helps some with the heat too. I don't know the BTU rating for people.
__________________
stevebaz is offline   Reply With Quote
Old 09-27-2017, 05:44 PM   #22
Senior Member
 
Name: Gerry
Trailer: Boler 13 ft / 31 ft Holiday Rambler
Maine
Posts: 1,254
I found that the new White&Rogers t-stat only has a differential of about 7 degrees I would like to have it more like 15 but there is no way to adjust it.
I do have the thermostat mounted high on the wall so temps up there are a bit warmer then where we are sleeping.
With a digital can you adjust the differential?
__________________
Gerry is offline   Reply With Quote
Old 09-27-2017, 09:55 PM   #23
Senior Member
 
Name: Steve
Trailer: Scamp 13
California
Posts: 1,517
Read the installation manual. My thermostat has 2 options one about a 2 degree swing and another with a courser swing. There is a wire loop on my thermostat you cut to have the courser setting.
__________________
stevebaz is offline   Reply With Quote
Old 09-28-2017, 04:17 AM   #24
Senior Member
 
Name: Gerry
Trailer: Boler 13 ft / 31 ft Holiday Rambler
Maine
Posts: 1,254
Thanks Steve I will have to check but if I can not find the paper, just how much of a courser swing will it give. Is it calibrated?
__________________
Gerry is offline   Reply With Quote
Old 09-28-2017, 03:37 PM   #25
Senior Member
 
Name: Steve
Trailer: Scamp 13
California
Posts: 1,517
On my Thermostat I believe it doubled the swing. I don't have my paperwork with me so I cant be exact. Your biggest change is where your thermostat is mounted and how much radiated heat you get from the thermal mass the thermostat is mounted too. You don't want the thermostat mounted in the direct line of fire from the heater as it will shut off too soon. You want the thermostat at the same level you sleep at since you are trying to keep yourself more comfortable. My Attwood II is twice the heater the trailer needs I wish it was smaller so the trailer would have more time to soak up heat rather than just heating open air and shutting off very rapidly.
__________________
stevebaz is offline   Reply With Quote
Old 09-28-2017, 03:48 PM   #26
Senior Member
 
Jon Vermilye's Avatar
 
Name: Jon
Trailer: 2017 Escape 21
Oswego, NY
Posts: 1,501
Registry
The wire you are cutting is a heat anticipator. Some mechanical thermostats have adjustable ones, others a choice of on or off (cut). It is a little heater that, by warming the bi metallic strip, determines the on/off cycle. Removing it should increase the cycling time.

Many electronic thermostats use the equivalent, although a timer rather than a heater to save battery power. One problem - the instructions often have you choose the setting by heat source type rather than a delay time. Experimenting with the settings is the best way to go if you want to establish your own cycling time.

In some cases, the setting on electronic thermostats is a number that corresponds to the number of cycles per hour. A tutorial.
Jon Vermilye is offline   Reply With Quote
Old 10-01-2017, 08:00 PM   #27
Senior Member
 
Name: Peg
Trailer: 2016 -13' Scamp
Massachusetts
Posts: 137
Quote:
Originally Posted by floyd View Post
Unless you meant 5 degrees Centigrade I think your two hours a day (5 minutes per hour) is pretty incredible!

At 5 degrees Faherheit the windows let in more cold than a reffer unit on a Monfort truck! At any rate covering the windows helps a lot!
BTW... I wish I had one of those "degree" symbols on my keyboard!
If it IS there I don't how to find it.
ALT 0954 is the degree symbol. Hold down the ALT key and type in 0954. You will get a nice little
__________________
herons is offline   Reply With Quote
Old 10-01-2017, 08:36 PM   #28
Senior Member
 
Name: Peter
Trailer: G30 Elite Class C
British Columbia
Posts: 1,157
Quote:
Originally Posted by Peter S. in Iowa View Post
Hi all,

Will be taking off on a mostly boondocking trip in mid-October. Given the time of year, we are expecting chilly nights, which brings me to my question:
How much usage can I expect from running the furnace when needed solely on battery power? I have a Scamp 19 foot fifth wheel with one group 24 battery and will likely set the furnace at about 50 degrees or so. I will also be using a Mr. Buddy to warm up the interior before turning in for the night.
Thanks all. Any input would be greatly appreciated.
ell unless you can keep your batteries charged all night you will only get the fan up and running to push the heat into your trailer. Better to plug in and use a electric heater especially if she goes below -20*F I have managed that temperature but you do not want to come out from under the covers as it will take forever to get warm again. When we camped at that temperature we were in Manning Park early November, snow and ice on the ground and I had to go in the Worst way, so I got out and dressed warmly as I could Lifted the lid on the FG Canopy, hustled about 300' to a Porta Potti with a Plastic seat, Brrrrr,
I cannot understand why they do not use wood seats in this weather way warmer. Did my thing and headed back and slipped on a ice patch in the dark, I though I had broke me back, I lay there and moaned and groaned for a bit knowing no one was going to hear me at 4AM. I managed to get back to the truck on my hands and knees climbed back in and my wife did not want me in there with her but I had to get warm so I said either I come in or I steal all the blankets. she decided letting me in was the best choice. As we had a Spare 12V battery hooked up to a electric heater I turned the heater on and put it between the blankets with us until the fan would not run any longer. It warmed us and some of the air around us. I turned it off and snuggled down and was good till around 10aM the next morning. (we were sitting around 5500') when we got to hope the 2" of ice that formed on the fenders and hood had melted off as now around 1200'
Stude
__________________

__________________
stude is offline   Reply With Quote
Reply

Tags
battery, furnace, scamp


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Furnace running even with thermostat off allan3089 Problem Solving | Owners Helping Owners 12 02-19-2017 08:32 PM
Power draw from tv battery when turned off Wallo Towing, Hitching, Axles and Running Gear 39 06-08-2013 11:36 AM
Troubles running off battery alone. byAndrewDavis Problem Solving | Owners Helping Owners 14 04-01-2011 09:08 AM
Charging Battery and running battery lights when plugged in Nor_Cal_Todd Problem Solving | Owners Helping Owners 2 08-25-2010 01:44 PM
Battery power for an Atwood Furnace Mac B Problem Solving | Owners Helping Owners 29 12-03-2009 12:00 AM

» Upcoming Events
No events scheduled in
the next 465 days.
» Featured Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 01:25 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.