seeking to control Rinnai RCE 606A via an external thermostat
Rex Wilson
mount a thermostat on the wall (a wall on the other side of the room
from the heater), and have the heater cycle on and off the way any
normal furnace or heater would. Does anybody know how I can do this?
Thanks in advance.
p...@see_my_sig_for_address.com
Yep.
>Thanks in advance.
No problemo.
Paul ( pjm @ pobox . com ) - remove spaces to email me
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Rex Wilson
wanted. In case you're reading this before you're reading email, I
didn't see the details in your response below (or maybe you had
intended to include a URL?. After posting yesterday, I got to thinking
about having the external thermostat trip a relay that would
add/remove resistance to the thermistor that comes out the back of the
unit (with the two yellow wires). I see in their service manual that a
91k ohm resistance causes a reading of 41 degrees, and a 23k ohms = 86
degrees. Toggling up and back between those two would probably do it.
If that's the way you'd do it, my next question would be what watts
and tolerance settings to use for the resistor.
pjm@see_my_sig_for_address.com wrote in message news:<1631qvgmpjkh7ghds...@4ax.com>...
p...@see_my_sig_for_address.com
>Hi, Paul. I emailed you, though I wasn't sure if that was what you
>wanted. In case you're reading this before you're reading email, I
>didn't see the details in your response below (or maybe you had
>intended to include a URL?. After posting yesterday, I got to thinking
>about having the external thermostat trip a relay that would
>add/remove resistance to the thermistor that comes out the back of the
>unit (with the two yellow wires). I see in their service manual that a
>91k ohm resistance causes a reading of 41 degrees, and a 23k ohms = 86
>degrees. Toggling up and back between those two would probably do it.
>If that's the way you'd do it, my next question would be what watts
>and tolerance settings to use for the resistor.
I would think 1/2 watt would be fine - it's only a thermistor
control circuit, no current going on. And tolerance won't really
matter - your numbers are beyond the variance introduced by that
anyway.
>
>
>pjm@see_my_sig_for_address.com wrote in message news:<1631qvgmpjkh7ghds...@4ax.com>...
>> On 29 Oct 2003 19:49:09 -0800, zgo...@aol.com (Rex Wilson) wrote:
>>
>> >I've got a Rinnai RCE 606A gas space heater. I want to be able to
>> >mount a thermostat on the wall (a wall on the other side of the room
>> >from the heater), and have the heater cycle on and off the way any
>> >normal furnace or heater would. Does anybody know how I can do this?
>>
>> Yep.
>>
>> >Thanks in advance.
>>
>> No problemo.
>>
>>
>>
>> Paul ( pjm @ pobox . com ) - remove spaces to email me
>>
>> New HVAC/R program for Palm PDA's !! http://pmilligan.net/palm/
>> Free demo now available online !!!!
Paul ( pjm @ pobox . com ) - remove spaces to email me
New HVAC/R program for Palm PDA's !! http://pmilligan.net/palm/
Free demo now available online !!!!
Rex Wilson
So I take it that you agree that the "resistor on the yellow
thermistor dangling out the back" is the only/best way to remotely
control one of these things? It seems like kind of a brute force
approach. I was hoping that Rinnai had some published interface that
might involve using the existing socket that's in the back (and the
only documentation of this I can find is in the technician's
troubleshooting guide, where they describe connecting meter leads to
the thermocouple output terminals. I notice that there are five wires
that go to this socket, and a plastic cover conceals all but two of
the pin receptors).