MstrD Posted February 16, 2012 Posted February 16, 2012 I know there has been discoussion before about the differences between the Venstar T1700 and T1800. I just replaced my T1700 with a T1800 so I am familiar with both. I also upgraded from V1.3 to V2.2 insteon controller. The major difference is that the T1800 is 7 day programmable and the T1700 is 1 day programmable. Some people have opted for the T1700 because they were going to control it with their isy-99i. Thre are a couple other differences, which I'll explain later. I live in the Northeast. Generally we are either in heating mode, or cooling mode. With a month in the Spring or Fall, where everything is really off. I've opted to set my T1800 in either Program Heat or Program Cool. I didn't want it in auto-crossover mode. That requires changing a setting, for manual crossover. I can then cycle through Off, Heat, Program Heat, Cool, and Program Cool. The last thing I want is for the A/C to come on when it's freezing outside. I am using my isy-99i to adjust my settings, but, I'm setting the T1800 up in Program mode anyway. We are generally on a schedule. I'm using the isy to adjust around that schedule as necessary. I'm also want ot make sure that if for some reason the isy locks up, or fails, that the furnace will still operate in the dead of winter. I'm also using the Program Heat vs. Heat in a "vacation mode". I have a button by the front door that I can set on - "vacation mode". If the thermostat is currently set to Program Heat sets it to Heat, and sets the temp to 60F. The reverse if it's set to Program Cool. One of the other reasons that I'm using the T1800, is that it has a setting called Energy Saver. If the thermostat is set in Program mode, when it is coming out of night to morning mode, it will try to have the temp at the correct setting, by the time indicated. For instance, if you set the thermostat to 70F at 7am, then it will try to be at 70F AT 7am, not jsut set the setpoint to 70F at 7am. It will call for heat before that time. The manual says that it takes 4-8 days for the thermostat to learn your house. This can't be done using the T1700, with just the isy controlling the temp, unless you can create all the logic and tell it when to come on, ahead of time. The last thing that the T1800 can do that the T1700 can't is it has a programmable fan. You can set the thermostat to turn the fan on for a number of minutes at the top of each hour. You can also set the on/off window as well. This will help circulate air throughout your house to eliminate deadzones, as well as run the air through your air filters. You can do this with isy-99i as well, but in this case, the T1800 is handling that function. I just wanted to put this out there for anyone doing some thermostat research. I got a good deal on the T1800, and for now I'll probably just sell my T1700 with it's v1.3 insteon controller on ebay. For me it was worth the upgrade.
Vanhalo Posted June 30, 2012 Posted June 30, 2012 Another difference (that I just discovered) is the T1700 will not accept the wireless receiver/sensor on the RS1 terminal. I am sure the logic is there to allow remote temp control but it is not an available option. The outdoor temp on RS2 is an option but not the indoor temp control. Anyone want to buy a T1700?
Brian H Posted June 30, 2012 Posted June 30, 2012 T1700 also has no optional connector for the Humidity Sensor and was a problem {maybe corrected now} with a floating Humidity Signal sending trash readings.
Teken Posted July 8, 2012 Posted July 8, 2012 Thank you all for the insight as to the differences in each model. On a related note, is the T1900 just the same unit which includes the humidity sensor? Lastly, are the models which state 28XX are they Insteon compatible? Teken . . .
Edgar F Posted December 30, 2013 Posted December 30, 2013 Hi, im trying to control a AC system with heat pump, but Insteon Thermostat doesnt work, i saw that i can use a T1700 with Insteon Thermostat adapter. This model (T1700) will function with ISY?, Im using triggerlinc to turn off the AC every period of time, can i do this with T1700? Regards
Brian H Posted December 31, 2013 Posted December 31, 2013 Yes the 2441V is supported. I don't know what functions are included. It plugs into the jack on the bottom of the T1700,T1800 or T1900. Here is the Smarthome Sales Page for the device. It has more information on it including links to its manuals. http://www.smarthome.com/2441V/Thermost ... ble/p.aspx
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