Product Information
3
ViewStat Communicating Thermostat
Support Module Specifications
There are two types of support modules available for the ViewStat:
VST- TTM Temp er atu re M odu le: The VST-TTM support module offers versatility in climate
control. A set of onboard dip switches on the VST-TTM circuit board allow you to determine
whether you want the two remote temperature sensor inputs to control, monitor or do a
combination of both. This temperature data is sent back to the ViewStat Thermostat, allowing you
to accurately control and monitor temperature in a given area or multiple areas.
VST- TRH Temp er atu re a nd H umi di ty M odu le: The VST-TRH support module brings further
versatility to the HVAC system. A set of onboard dip switches on the VST-TRH circuit board allow
you to determine whether you want the two remote temperature sensor inputs to control, monitor,
or both. The temperature/humidity data is sent back to the ViewStat, allowing you to accurately
control and monitor temperature/humidity in a given area or multiple areas.
ViewStat Specifications (Cont.)
Circuit Board Components:
Communication and HVAC
Equipment connectors
Terminals with captive-wire connectors that connects the Thermostat, HVAC
equipment, control system, remote sensors and power supply. Refer to the Wir-
ing the Thermostatsection on page 20 for details.
DIP Switch 4-position DIP switch that configures the thermostat for various application types
(Servant/Master, Electric/Fossil, Single/Multi, Heat Pump/Heat-Cool). Refer to
the Setting the DIP Switchsection on page 9 for details.
Enclosure:
Material White plastic with hinged faceplate and removable front panel.
ViewStat Dimensions
(HWD)
5.01" x 5.52" x 1.15"
(12.72 cm x 14.02 cm x 2.92 cm)
Weight 5.29 oz. (150 grams)
Included Accessories • Cat5 Suppression Ferrite
• 24 VAC Suppression Ferrite
Optional Accessories • VST-TTM Remote Temperature support module (FG944-10)
• VST-TRH Remote Temperature/Humidity support module (FG944-20)
• VST-TSF Flush-mount indoor remote sensor (FG944-30)
• VST-TSO Duct/outdoor remote sensor (FG944-40)
Remote Temperature
Sensors:
VST-TSF Dimensions: • Cable length: 9.00"(228 mm)
• Sensor depth: 0.85" (22 mm)
• Sensor diameter: Ø1.50 (Ø38 mm)
VST-TSO Dimensions
(HWD):
• 2.75" x 1.44" x 1.75
(70 mm x 37 mm x 44 mm)
Weight: • VST-TSF: 0.5 lb (0.23 kg)
• VST-TSO: 0.75 lb (0.34 kg)