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electronic thermostat installation pepper 10-05-2009
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Posted by pepper on October 5, 2009, 11:48 am


> > hi
> > I want to replace my existing baseboard heater thermostat. I have new
> > one (Honeywell RLV 450) but it only has two wires for connections and
> > the old one has 4 wire hookup. What wires are used (there are two red
> > and two black wires)?
> > Pepper
> Do ya' think maybe it's a good idea for starters to at least buy the righ=
t
> class of thermostat--- instead of trying to force-fit the wrong one? Your
> first clue is the number of connectors is wrong...

The thermostat is rated for 240 VAC and the instructions say it is
suitable for a 4-wire hook-up.

If it helps, I can send a picture of these instructions.

Thanks Phil

Posted by John Grabowski on October 5, 2009, 12:27 pm


> I want to replace my existing baseboard heater thermostat. I have new
> one (Honeywell RLV 450) but it only has two wires for connections and
> the old one has 4 wire hookup. What wires are used (there are two red
> and two black wires)?


*You can use a single pole thermostat for a two pole installation on a
baseboard heater. I prefer not to do it that way for safety reasons. When
the thermostat is off one leg on the heater will always have juice on it.

What you need to do is splice one hot leg and one load wire together. Than
just follow the instructions for line and load on the new thermostat.


Posted by RBM on October 5, 2009, 4:54 pm



>> I want to replace my existing baseboard heater thermostat. I have new
>> one (Honeywell RLV 450) but it only has two wires for connections and
>> the old one has 4 wire hookup. What wires are used (there are two red
>> and two black wires)?
> *You can use a single pole thermostat for a two pole installation on a
> baseboard heater. I prefer not to do it that way for safety reasons.
> When the thermostat is off one leg on the heater will always have juice on
> it.
> What you need to do is splice one hot leg and one load wire together.
> Than just follow the instructions for line and load on the new thermostat.



Posted by RBM on October 5, 2009, 4:56 pm



>> I want to replace my existing baseboard heater thermostat. I have new
>> one (Honeywell RLV 450) but it only has two wires for connections and
>> the old one has 4 wire hookup. What wires are used (there are two red
>> and two black wires)?
> *You can use a single pole thermostat for a two pole installation on a
> baseboard heater. I prefer not to do it that way for safety reasons.
> When the thermostat is off one leg on the heater will always have juice on
> it.
> What you need to do is splice one hot leg and one load wire together.
> Than just follow the instructions for line and load on the new thermostat.
Ditto what John said, from a safety point , but also be sure that the
amperage rating of the single pole unit is adequate for the amount of
wattage you're looking to control



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