Crestron CHV-TSTATEX-FCU Guia de Instalação descarregar pdf (Página 27)

Crestron CHV-TSTATEX-FCU infiNET EX Thermostat (Fan Coil Unit)

Operations & Installation Guide – DOC. 7206C infiNET EX Thermostat (Fan Coil Unit): CHV-TSTATEX-FCU

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Operation

System Mode

The MODE button on the CHV-TSTATEX-FCU cycles the unit through all

available system modes in the following order: Off, Heat, Emergency Heat (for heat

pump and dual-fuel systems), Cool and Auto (if enabled in Setup).

The system mode changes upon release of the MODE button and the selected mode

becomes operational 5 seconds after the mode has been entered.

Off Mode

In Off mode, all HVAC systems are disabled.

Heat Mode

In Heat mode, the thermostat uses the heating system to maintain the setpoint

temperature.

Cool Mode

In Cool mode, the thermostat uses the cooling system to maintain the setpoint

temperature.

Auto Mode

In Auto mode, the thermostat allows the system to switch between Heat and Cool

automatically as needed to maintain the setpoint temperature. By default, the

CHV-TSTATEX-FCU has been configured with Auto mode disabled, meaning it is

not available from the thermostat itself or via another interface such as a touch

screen.

In order to enable Auto mode, enter Setup mode and change the AU setting from

“--” to either d (dual setpoint) or S (single setpoint). Refer to “Setup Mode” which

starts on page 18 for details.

Once Auto mode has been enabled, it can be accessed from the

CHV-TSTATEX-FCU controls as follows:

1. Press the MODE button until both the flame

and snowflake icons

appear in the display. This indicates Auto mode is now active.

2. Use the

and buttons to adjust the setpoint. Actual operation depends on

whether single or dual setpoints are being used.

a. In dual setpoint Auto mode, the first press of the

or buttons (or

second press if the first press simply turned on the backlight) causes

either the flame

or snowflake icon to flash rapidly. This

indicates which setpoint is adjusted by subsequent presses of the

buttons. To adjust or view the alternate setpoint, press the MODE

button while the icon is flashing. This causes the alternate icon to flash

and now the

and buttons adjust that setpoint. The flashing icon

times out after 5 seconds of no button activity.

b. In single setpoint Auto mode, use the buttons to adjust the setpoint as

usual.

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