Xfinity Home Tstat
What is the voltage range of typical "high voltage" thermostats?
110v to 240v
What is the voltage range of typical "low voltage" thermostats?
1mV to 30V
What is the "W" wire terminal used for on thermostats?
1st Stage heat relay
What is the "Y1" wire terminal used for on thermostats?
1st stage cool relay (compressor)
What is the approx battery life for a Zen thermostat?
2-3 years
What is the "C" wire terminal used for on thermostats?
24V neutral (common leg)
What is the "Rc" wire terminal used for on thermostats?
24V power for cooling
What is the "Rh" wire terminal used for on thermostats?
24V power for heating
What is the "Y2/0" wire terminal used for on thermostats?
2nd Stage cool relay
What is the "W2" wire terminal used for on thermostats?
2nd stage heat relay
Which wire is not required for use with the Zen thermostat?
C wire
What is the "O" wire terminal used for on thermostats?
Change over valve in cool
What is the "B" wire terminal used for on thermostats?
Change over valve in heat
Which type of HVAC system, used for both air conditioning and heat furnaces, is usually run by fossil fuel such as gas, oil, or propane?
Conventional
What type of thermostats use a magnetic latching relay?
Electronic
What is the "G" wire terminal used for on thermostats?
Fan relay
Define HVAC
Heating, Ventilation, and Air Conditioning
There are high voltage thermostats typically used?
In homes with electric base board heating system or some commercial hot water base board heating systems
What is the most common type of thermostat?
Low voltage, 24VAC
What type of thermostat uses a bi-metal device which causes two contacts to close (turn the unit on) or open (turn the unit off) the circuit depending on the room's air temperature?
Mechanical
What type of thermostat uses a vial of mercury connected to a bi-metal spring that reacts to the temperature?
Mercury
What are the 3 categories, or types of thermostats?
Mercury, Mechanical, Electronic
What type of thermostat allows the homeowner to set the temperature to automatically adjust depending on the time of day, occupancy use, etc?
Programmable
What are the 6 types of HVAC systems?
conventional, electric, heat pump, hydronix,hot water heat, zoned baffle systems
