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Unread 04-15-2009, 11:10 AM   #1
pooky
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Nu Heat Issue

Anyone have trouble getting a nuheat mat up to temp

220 / 72' by 30' . . .

We installed this small mat and even replaced the the thermostat
but just cant seem to get the temp up enough. Everything tests fine,
the probe is in the right spot but still can't get the floor warm enough.

Anyone have a similar experience? Thoughts?

thanks

stephen
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Unread 04-15-2009, 11:13 AM   #2
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that should read Nu heat

thanks
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Unread 04-15-2009, 11:13 AM   #3
lati_cz
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is it installed over concrete slab? It takes up to 8 hours to heat mat over concrete.
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Unread 04-15-2009, 11:34 AM   #4
pooky
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noooooop

over cbu--over plywood subfloor - used megalight to bed and set
fully insulated directly below floor . . .

and, the weird thing is that everything tests out ok

even when we disable the thermostat - the thing doesn't seem to get that hot

I think default max temp is 86 -- even set to that we can't seem to get this

thing hot enough??

Anyone have this experience-- what did you do?

thanks

stephen
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Unread 04-15-2009, 11:52 AM   #5
dhagin
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Hey Stephen,

I've had to crank the t-stat to maximum on some with deeper pours of SLU. Haven't installed nu-heat, but i believe any thicker build-up of materials, whether SLU, thinset, etc... would probably have similar results - more mass to heat.

Also, you may give the manufacturer a call to pick their brains for similar issues AND find out what their max operating temp would be.

Good luck.
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Unread 04-15-2009, 02:28 PM   #6
tilemanct
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I had a similar problem in an old house. Joist bay ends were not insulated. Joist bays acted like wind tunnels, taking the heat with it. Insulated and problem was solved. Make sure you have a t-stat for tile and not the laminate floor one. Those are regualted to a lower temp.
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Unread 04-15-2009, 03:24 PM   #7
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Pooky, Just call Nu-heat and explain to them. As you know it a stone throw from your area.....
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