Amx ViewStat User Manual download pdf (Page 8)

Product Information

ViewStat Communicating Thermostat

System Components

The components in a complete ViewStat system (including optional accessories) are listed below:

ViewStat Specifications

System Components

Component Name Description

ViewStat (VST) Communicating thermostat

VST-TTM Temperature support module (optional)

VST-TRH Temperature/Humidity support module (optional)

VST-TSF Flush-mount remote sensor Indoor flush-mount temperature/relative humidity sensor (optional)

VST-TSO Duct/Outdoor remote sensor Duct/Outdoor-mount temperature/relative humidity sensor (optional)

VST-DIST Distribution Panel

ViewStat Specifications

Control Ports • HVAC control

• ICSNet

Control Voltage 24 VAC ±20% or 24 VDC ±20% (delivered by an HVAC system or by an external

power supply)

Switched Voltage 18 – 30 VAC

Maximum Operating Current • 2 amps total at rated voltage, through all outputs.

• 1 amps through any one output.

Maximum Surge Current 2.0 A

Control Accuracy ±1.0° F (± 0.56° C)

Control Range 40° – 90° F (4.44° – 32.22° C)

Operating Range 32° – 99° F (0° – 37.22° C)

Baud Rate 9600

Front Panel Components:

Message display Two types of messages are displayed, Permanent and Temporary Messages.

• Permanent Messages are those that scroll continually during thermostat

operation.

• Temporary (flashing) Messages are intended to catch your eye and must be

reset to be removed from the display.

Thermostats are shipped with default (permanent) status messages (i.e. mode

status, fan status, equipment status).

Scroll/Set-up buttons The Scroll/Set-Up buttons function with the set-up features of the thermostat

(see theSet Up and Configuration section on page 39). These buttons are

located beneath the faceplate.

Main LCD display The MAIN DISPLAY (see FIG. 16 on page 23) provides the mode status, tem-

perature and system status information.

Mode button Five modes of operation are available: OFF, COOL, HEAT, AUTO, and EM.

HEAT (for heat pumps only). The mode of operation indicates how you want

your heating and cooling equipment to operate. This button is located beneath

the faceplate.

Fan button The fan can be operated continuously (FAN ON) or only when there is a need to

heat or cool. This button is located beneath the faceplate.

Enter button The Enter (or Network Override) button is used to override the home automation

system, to clear temporary flashing messages on the message display and with

the set-up features of the thermostat.

Adjust buttons The Adjust buttons adjust the heating and cooling temperature settings.

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Amx ViewStat User Manual Page 8

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