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Raru · Jun 20, 2009, 10:55 AM

What are the terminals S1 and S2 for? I want to install a zwave thermostat, but these t 2 wires don't show anywhere.

As a side, is there a wireless thermidistat contol on the market?

KC13 · Jun 20, 2009, 10:59 AM

S1 and S2 are connections for an outdoor temperature sensor (older thermidistats) or a remote indoor sensor (newer thermidistats). Some features of the thermidistat (cooling lockout, auto humidify, etc.) require the outdoor sensor. See the installation instructions for more details.

Raru · Jun 20, 2009, 11:16 AM

Originally Posted by KC13

S1 and S2 are connections for an outdoor temperature sensor (older thermidistats) or a remote indoor sensor (newer thermidistats). Some features of the thermidistat (cooling lockout, auto humidify, etc.) require the outdoor sensor. See the installation instructions for more details.

I'd look at the installation instructions if I could find them. I've searched all over the web, but cannot find them.

Can you lead me to them?

Thanks!

KC13 · Jun 20, 2009, 11:23 AM

What model do you have? Could be "TSTAT**PRH**" or "T6PRH**"...

Raru · Jun 20, 2009, 11:29 AM

Originally Posted by kc13

what model do you have? Could be "tstat**prh**" or "t6prh**"...

Tstatccprh01-b.

KC13 · Jun 20, 2009, 11:41 AM

Unfortunately, they aren't available on the HVACPARTNERS website either. What specific info are you looking for? I am very familiar with these controls...

KC13 · Jun 20, 2009, 11:59 AM

I re-read your original post. If additional features are what you want, but you have a limited number of wires available, the newer-style thermidistat (T6PRH) is a 2-piece system that only requires 2 control wires between the wall-mounted display unit and the control module (which mounts near or on the indoor unit). All functions of the older-style thermidistat are available (and a few new ones) without fishing wire or opening walls.

Raru · Jun 20, 2009, 12:03 PM

Originally Posted by KC13

I re-read your original post. If additional features are what you want, but you have a limited number of wires available, the newer-style thermidistat (T6PRH) is a 2-piece system that only requires 2 control wires between the wall-mounted display unit and the control module (which mounts near or on the indoor unit). All functions of the older-style thermidistat are available (and a few new ones) without fishing wire or opening walls.

I was trying to determine what the exiting wires were, because I want to install a wireless thermostat. I'm also trying to find a wireless thermostat that might have the same functions as the Thermidistat, but it doesn't look too promising.