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Topic: Hot floor in bedroom (Read 688 times) previous topic - next topic

Hot floor in bedroom

In Arizona in July it's hot.  Stopped for an afternoon nap and took a picture with IR camera.  Floor on each side of engine compartment was around 115F.  Note in picture the purple area, that is the engine cover.  It's well insulated.  With the floor that hot the bedroom would not cool down well.  Cutting 1" foil backed foam to cover floor until we get home.  Hottest side was the one near the radiator.  I am assuming I need to apply insulation under floor, but it's too warm to look at here.
Steve DeLange
2005 U320T 40'
Pearland, Texas

Re: Hot floor in bedroom

Reply #1 –
Several things.
1, Arizona in a coach in the summer?

2, And this may sound odd. (And I am :)) ) But how about opening up the engine bay to allow the trapped heat a way out. One could also set up a small 120V fan by the open engine bay to move even more air while you take a nap.

3, I'm not sure if you could stuff enough insulation under the floor to keep engine heat away when there is already triple digit ambient temps outside. It will come in through the windows and the side walls. Our coaches are pretty well insulated (for a coach) but they aren't R22 insulated.
Jerry & Nona and Kimeru the cat that thinks she's a dog
1998 36' WTFE U320  #5314 Motorcade #17711
USAF 1975-1995
2019 Subaru Crosstrek 'toad'
2003 Subaru Legacy touring car
jerry Fincher | Flickr

Re: Hot floor in bedroom

Reply #2 –
I was amazed the engine cover was cool but the floor on each side is hot.  I am assuming there is no insulation under floor. I am going to check when I get to Ruidoso and it's cooler outside. Amazingly, one heat source was the floor heater ducts. And trust me the heat is not on.  I am considering adding 2 electric radiator fans to engine hatch to cool engine area down quicker.
Steve DeLange
2005 U320T 40'
Pearland, Texas

Re: Hot floor in bedroom

Reply #3 –
Quote from: sedelange –
Amazingly, one heat source was the floor heater ducts. And trust me the heat is not on.  I am considering adding 2 electric radiator fans to engine hatch to cool engine area down quicker.
I posted just the other day about the aqua hot in our 320 sending heat through the floor area between our LR & kitchen. We need it on to supply hot water. But the thermostats were OFF. Yet the coach was heating up enough in 75 degree weather parked in a shady spot to need to turn on the vent fans or AC to cool it down enough to sleep. Our bottom kitchen drawer is hot enough that I felt unsafe having a small pressurized can of deoxit in there.

I always thought that to get heat to those heat exchangers, The stir pumps need to be on via the thermostat.
Jerry & Nona and Kimeru the cat that thinks she's a dog
1998 36' WTFE U320  #5314 Motorcade #17711
USAF 1975-1995
2019 Subaru Crosstrek 'toad'
2003 Subaru Legacy touring car
jerry Fincher | Flickr

Re: Hot floor in bedroom

Reply #4 –
In the large Aqua Hot heaters (not Hydro Hot or 400 series heaters), anytime the burner is running, so is pump 2.  The pump 2 stirs the coolant tank by sending coolant out to bathroom then to the basement fan coils and back to the tank.  So, the bathroom fan coil will get warm and put some heat into that area.
Rudy Legett
2003 U320 4010 ISM 450 hp
2001 U320 4220 ISM 450 hp
1995 U320 M11 400 hp
1990 Granvilla 300 hp 3208T
Aqua Hot Service Houston and Southeast Texas

Re: Hot floor in bedroom

Reply #5 –
Good one Rudy,  thanks
"Riding and rejoicing"
Bob
1997 U320 40' Mid entry, build 5132,  wtbi ce27, 4th owner
2007 Solara convertible
2 prodeco tech outlaw ss electric bikes

1095 watts solar
08 Ls 460 and a sc430
2000 Ford F-250 superduty 4x4

Re: Hot floor in bedroom

Reply #6 –
I know on ours. The heat is all in the LR & Kitchen. The bathroom, BR has been fine. (At least in our coach)
Jerry & Nona and Kimeru the cat that thinks she's a dog
1998 36' WTFE U320  #5314 Motorcade #17711
USAF 1975-1995
2019 Subaru Crosstrek 'toad'
2003 Subaru Legacy touring car
jerry Fincher | Flickr

Re: Hot floor in bedroom

Reply #7 –
Does  pump 2 run on  ac?
"Riding and rejoicing"
Bob
1997 U320 40' Mid entry, build 5132,  wtbi ce27, 4th owner
2007 Solara convertible
2 prodeco tech outlaw ss electric bikes

1095 watts solar
08 Ls 460 and a sc430
2000 Ford F-250 superduty 4x4

Re: Hot floor in bedroom

Reply #8 –
Bob,  No Sir.  Electric element is in bottom of tank where burner is in the middle with both control thermostats at the top of tank.
Rudy Legett
2003 U320 4010 ISM 450 hp
2001 U320 4220 ISM 450 hp
1995 U320 M11 400 hp
1990 Granvilla 300 hp 3208T
Aqua Hot Service Houston and Southeast Texas

Re: Hot floor in bedroom

Reply #9 –
Thanks Rudy.  So incidental  heating will occur when the flame is actually on.  No blowers unless the thermostat are set to trigger them. 
"Riding and rejoicing"
Bob
1997 U320 40' Mid entry, build 5132,  wtbi ce27, 4th owner
2007 Solara convertible
2 prodeco tech outlaw ss electric bikes

1095 watts solar
08 Ls 460 and a sc430
2000 Ford F-250 superduty 4x4

Re: Hot floor in bedroom

Reply #10 –
Bob,  You are correct.
Rudy Legett
2003 U320 4010 ISM 450 hp
2001 U320 4220 ISM 450 hp
1995 U320 M11 400 hp
1990 Granvilla 300 hp 3208T
Aqua Hot Service Houston and Southeast Texas

Re: Hot floor in bedroom

Reply #11 –
Hot floor in AZ in the summer time after driving the coach.  I would say this is normal.  My bedroom tends to warm up under those conditions.  Never really checked the floor, but the mattress is warmer than usual.  It cools down after about an hour or so. 
Jerry Whiteaker former owner 96 U270  36' #4831 Austin,TX-Owner Mods LCD TV w/front cabinet rebuild - LCD TV bedroom - Dual Central AC, either can cool coach w 30 amp - Skylights at roof AC openings - Drop ceiling for ducting of AC - Shower skylight white gelcoat/wood/epoxy frame - Air Springs/Shocks replaced - 2014 CRV - 8K Home Solar - Chevy Volt

Re: Hot floor in bedroom

Reply #12 –
Fixed.  Covered the rear floor on each side of engine cover with foil backed foam.  Temp of floor now 68 after driving for a few hours.
Steve DeLange
2005 U320T 40'
Pearland, Texas

Re: Hot floor in bedroom

Reply #13 –
On our coach bedroom floor on drivers side and bedroom in general got so hot when driving then parking for the night that could not sleep even when leaving the engine hatch open.
Replaced the 35 gal drum of a muffler with a resonator.. really cooled things down (and now can access the chassis batteries without having to work around said muffler.)
'02 40' U320t  4010WTFS Build 6036 1 slide
Motorcade # 17841
SKP 151920
Retired truck driver
 5 million miler
Still have itchy feet for travel

Re: Hot floor in bedroom

Reply #14 –
Just arrived at Albuquerque and stopped for night.  Bedroom is completely cool. Able to crawl in bed immediately.  At least half my heat is from the radiator side.

When I get home I am going to put R-18 heat shield under carpet.  This hard foam was just a test. 
Steve DeLange
2005 U320T 40'
Pearland, Texas