Serial-Stat Thermostats

The Serial-Stat™ Communicating thermostats allow full control and feedback of all functions and temperature readings on the thermostat. Besides their world class functionality, the Serial-Stat™ thermostat has a low profile, award winning design that blends well with any decor.

The Serial-Stat™ Communicating thermostats are available in several models in order to meet the needs of various types of HVAC equipment in the marketplace. All thermostats are manufactured in accordance with ISO9000 standards, with certification planned. The thermostats were designed with today's interiors in mind. These solid state electronic thermostats use state-of-the-art surface mount manufacturing technology incorporated into an extremely low profile, ultra-slim ABS plastic case. All versions include the following standard features: auto-changeover, selectable Celsius or Fahrenheit temperature display, fan selector switch, built-in short cycle protection, electronic calibration, Day/Night button for alternate setback setpoints, and user definable addressing from the front panel of the thermostat. No battery is required, and setpoint data and mode of operation is retained following power outages of any duration. All thermostat models can have multiple remote indoor sensors and one outdoor temperature sensors or one wet location sensor connected to them.

There are two columns of connectors on the thermostats. These connectors use the standard wiring and terminology for the HVAC industry. The feature connector, located on the left side of the thermostat backplate, has three main functions. They are the contact closure port, the remote sensor bus, and the communications bus.

The contact closure port provides the ability to remotely choose the day/night setpoint whenever CLK1 and CLK2 on the port are connected together. The most common use of this port is with an X-10 or security system relay. The contact closure port is a separate input from the network communications bus and should only be used when an XCI Network Controller is not being used on the project.

The remote sensor bus allows the connection of one outdoor sensor and any combination of up to six remote indoor sensors and return air duct sensors.

The communications port allows for complete control and feedback of all functions of the thermostat. There are four (4) models of the XCI Serial-Stat™ communicating thermostat. All models offer full bi-directional control any of the family of XCI Network Adapters through the RS-232 or RS-485 interfaces (XC-SSA2/CLK only).



SST-1 (1 Heat / 1 Cool) for Gas/Electric Conventional HVAC systems

The SST-1 single-stage thermostat will work for a large majority of the HVAC units in the marketplace.
The unit can control one (1) single stage air conditioning compressor, and one (1) gas or electric heater.

Datasheets & Instructions

SST-1-R3 Data Sheet
SST-1-R3 Installation Guide

  • Automatic Heat <--> Cool Changeover
  • Switchable 2 or 4 Minute Minimum On/Off Time
  • Short Cycle Protection
  • Celsius or Fahrenheit Display
  • Dual Occupied & Unoccupied Setpoints for Heat and Cool
  • Remote Sensor Capability (indoor, duct and outdoor)
  • Outdoor Temperature Display (requires outdoor sensor or connection to network)
  • Keyboard Lockout Feature for commercial applications, includes 1-Hour Override
 

MST-1 (2 Heat / 2 Cool) for Gas/Electric Conventional HVAC system

The MST-1 multi-stage thermostat is designed for use with more complex conventional HVAC systems.
The unit can control one (1) two-stage compressor, and one (1) two-stage gas or electric heater.

 

Datasheets & Instructions

MST-1 R3 Data Sheet
MST-1 R3 Installation Guide

  • Automatic Heat <--> Cool Changeover
  • Switchable 2 or 4 Minute Minimum On/Off Time
  • Short Cycle Protection
  • Celsius or Fahrenheit Display
  • Dual Occupied & Unoccupied Setpoints for Heat and Cool
  • Remote Sensor Capability (indoor, duct and outdoor)
  • Outdoor Temperature Display (requires outdoor sensor or connection to network)
  • Keyboard Lockout Feature for commercial applications, includes 1-Hour Override
 


HPT-1 (2 Heat / 1 Cool) for Heat Pump HVAC systems

The HPT-1 heat pump thermostat is designed for use with the majority of the heat-pump applications in the market. The unit can control one (1) cooling stage and two (2) heating stages. Typically, the second stage of heat is auxiliary or emergency heat.

Datasheets & Instructions

HPT-1-R3 Data Sheet
HPT-1-R3 Installation Guide

  • Automatic Heat <--> Cool Changeover
  • Switchable 2 or 4 Minute Minimum On/Off Time
  • Emergency Heat Capability
  • Economy or Comfort Equipment Staging
  • Celsius or Fahrenheit Display
  • Dual Occupied & Unoccupied Setpoints for Heat and Cool
  • Remote Sensor Capability (indoor, duct and outdoor)
  • Outdoor Temperature Display (requires outdoor sensor or connection to network)
  • Keyboard Lockout Feature for commercial applications, includes 1-Hour Override
 



HPT-2 (3 Heat / 2 Cool) for Heat Pump HVAC systems

The HPT-2 heat pump thermostat is designed for use with the more complex heat-pump applications in the market. The unit can control two (2) cooling stages and three (3) heating stages. Typically, the third stage of heat is auxiliary or emergency heat.

Datasheets & Instructions

HPT-2-R3 Data Sheet
HPT-2 -R3 Installation Guide

  • Automatic Heat <--> Cool Changeover
  • Switchable 2 or 4 Minute Minimum On/Off Time
  • Emergency Heat Capability
  • Economy or Comfort Equipment Staging
  • Celsius or Fahrenheit Display
  • Dual Occupied & Unoccupied Setpoints for Heat and Cool
  • Remote Sensor Capability (indoor, duct and outdoor)
  • Outdoor Temperature Display (requires outdoor sensor or connection to network)
  • Keyboard Lockout Feature for commercial applications, includes 1-Hour Override