Crestron electronic CHV-TSTATRF - Manual (Page 19)

Crestron CHV-TSTATRF infiNET™ Thermostat
Basic Setup
Basic Thermostat Setup
The following documents the most common CHV-TSTATRF setup requirements.
For full details on all setup options, refer to “Advanced Setup” which starts on page
19.
Install two AA batteries (supplied) in the battery compartment.
NOTE: When first setting up the CHV-TSTATRF, batteries are required, even if
you plan to power it from a constant 24 VAC supply.
Place the CHV-TSTATRF in the Setup mode by doing the following:
1. Press and hold the FAN button.
2. While the FAN button is being held, press and hold the and buttons
simultaneously.
3. Hold all three buttons for five seconds, after which the unit will enter Setup
mode. The display shows the Temperature Scale function (FC).
Use or to choose the temperature units: F (Fahrenheit), C1 (setpoint in whole
degrees Celsius) or C2 (setpoint in half degrees Celsius). Then press MODE twice
until the Heat/Cool function is displayed (HC).
Use and to choose between Heat/Cool (HC), Heat pump (HP) and Dual-fuel
Heat Pump (dF) functions. Then press MODE repeatedly until the Power Source
function is displayed (Po).
Use and to choose between 24V always available (24) and steal power (SP).
By default, the CHV-TSTATRF is configured to be powered by two AA alkaline
batteries. In addition, in order to extend battery life, the device is able to steal power
from the HVAC system by drawing a small amount of current through the heat or
cool terminals. It will not draw enough current to cause the external heat or cool
relays to close.
More specifically, when the unit is not making a call for heat, it will draw power
through the RH and W terminals. When the unit is making a call for heat, it will
draw power through the RC and Y terminals. (This will not work if the thermostat
has been wired for a cool only application.)
NOTE: The CHV-TSTATRF must be wired for heat control in order to take
advantage of the steal power setting.
NOTE: The power stealing ability is designed to extend battery life, not to eliminate
the need for batteries. Two AA batteries are still required.
NOTE: When the Power Source (Po) function is set to steal power (SP), even when
an auxiliary power source is available, the unit will continue to enter a
communications sleep state, waking every 30 seconds or one minute (based on the
infiNET Sleep Time setting) to exchange data with the control system. Refer to
“Remote Operation” on page 27 for details.
Operations & Installation Guide – DOC. 6490A infiNET™ Thermostat: CHV-TSTATRF • 15