CT80 Z-Wave Thermostat

This describes the Z-Wave device CT80, manufactured by Radio Thermostat Company of America (RTC) with the thing type UID of rtc_ct80_00_000.

Z-Wave Thermostat

Inclusion Information

Push Menu button, choose network, choose Z-Wave Radio, push “Mate” (only usable with Z-Wave Module)

Channels

The following table summarises the channels available for the CT80 Z-Wave Thermostat.

Channel Channel Id Channel Type UID Category Item Type
Sensor (temperature) sensor_temperature sensor_temperature Temperature Number
Thermostat Mode thermostat_mode rtc_ct80_00_000_thermostat_mode Temperature Number
Thermostat Operating State thermostat_state thermostat_state Temperature Number
Setpoint (cooling) thermostat_setpoint_cooling thermostat_setpoint Temperature Number
Setpoint (heating) thermostat_setpoint_heating thermostat_setpoint Temperature Number
Thermostat Fan Mode thermostat_fanmode rtc_ct80_00_000_thermostat_fanmode Temperature Number
  battery-level system.battery-level    
Clock Time Offset time_offset time_offset Temperature Number
Sensor (relative humidity) sensor_relhumidity1 sensor_relhumidity Humidity Number

Sensor (temperature)

Scale

Select the scale for temperature readings

Property Value      
Configuration ID config_scale      
Data Type TEXT   Default Value 0
Options Celsius (0)      
  Fahrenheit (1)      

Setpoint (cooling)

Scale

Select the scale to use for setpoints.

Property Value      
Configuration ID config_scale      
Data Type TEXT   Default Value 0
Options Celsius (0)      
  Fahrenheit (1)      

Setpoint (heating)

Scale

Select the scale to use for setpoints.

Property Value      
Configuration ID config_scale      
Data Type TEXT   Default Value 0
Options Celsius (0)      
  Fahrenheit (1)      

Clock Time Offset

Automatic Update Offset

The number of seconds difference in the time before it is reset
Setting this will automatically update the devices clock when the time difference between the device, and the computer exceeds this number of seconds.

Property Value      
Configuration ID config_offset      
Data Type INTEGER      
Range 10 to 600   Default Value 60
Options Disable Auto Update (0)      

Device Configuration

The following table provides a summary of the configuration parameters available in the CT80 Z-Wave Thermostat. Detailed information on each parameter can be found below.

Parameter Description
1: Temperature Reporting Threshold Reporting threshold for changes in the ambient temperature.
2: HVAC Settings Configured HVAC settings
3: Utility Lock Enable/Disable Prevents setpoint changes at thermostat.
4: Power Status C-Wire / Battery Status
5: Humidity Reporting Threshold Reporting threshold for changes in the relative humidity.
6: Auxiliary/Emergency Enables or disables auxiliary / emergency heating
7: Thermostat Swing Temperature Variance allowed from setpoint to engage HVAC
8: Thermostat Diff Temperature Configures additional stages
9: Thermostat Recovery Mode Fast or Economy recovery mode.
10: Temp Reporting Filter Upper/Lower bounds for thermostat temperature reporting
11: Simple UI Mode Simple Mode Enable/Disable
12: Multicast Enable or disables Multicast
1: Group 1  

1: Temperature Reporting Threshold

Reporting threshold for changes in the ambient temperature.

Overview

This value determines the reporting threshold when association reporting is enabled. Unsupported values will be ignored.

Property Value      
Configuration ID config_1_1      
Data Type INTEGER   Default Value 2
Options Disabled (0)      
  0.5° (1)      
  1.0° (2)      
  1.5° (3)      
  2.0° (4)      

2: HVAC Settings

Configured HVAC settings

Overview

Byte 1 = HVAC Setup: Normal (0x01) or Heat Pump (0x02)

Byte 2 = Aux Setup(Gas (0x01) or Electric (0x02)) & Number of Auxiliary Stages (Heat Pump)/Number of Heat Stages (Normal)

Byte 3 = Number of Heat Pump Stages

Byte 4 = Number of Cool Stages

Property Value
Configuration ID config_2_4
Data Type INTEGER
Range 0 to 4294967295
Default Value 0

3: Utility Lock Enable/Disable

Prevents setpoint changes at thermostat.

Overview

If set to 0, the utility lock is disabled, all other values, 1-255, will enable the utility lock.  This will prevent changes to the setpoint at the thermostat screen.

Property Value      
Configuration ID config_3_1      
Data Type INTEGER   Default Value 0
Options Utility lock disabled (0)      
  Utility lock enabled (1)      

4: Power Status

C-Wire / Battery Status

Overview

If 0x01, the thermostat is being powered from a C-wire, if 0x02, the thermostat is being powered off of batteries.

Property Value
Configuration ID config_4_1
Data Type INTEGER
Range 0 to 255
Default Value 0

5: Humidity Reporting Threshold

Reporting threshold for changes in the relative humidity.

Overview

This value determines the reporting threshold when association reporting is enabled. Unsupported values will be ignored.

Property Value      
Configuration ID config_5_1      
Data Type INTEGER   Default Value 0
Options Disabled (0)      
  3% RH (1)      
  5% RH (2)      
  10%RH (3)      

6: Auxiliary/Emergency

Enables or disables auxiliary / emergency heating

Overview

If set to 0, auxiliary / emergency heat is disabled, all other values, 1-255, will enable the auxiliary / emergency heat. This can only be enabled when the thermostat is set to Heat Pump mode.

Property Value      
Configuration ID config_6_1      
Data Type INTEGER   Default Value 0
Options Auxiliary/Emergency heat disabled (0)      
  Auxiliary/Emergency heat enable (1)      

7: Thermostat Swing Temperature

Variance allowed from setpoint to engage HVAC

Overview

The thermostat swing temperature is in units of 0.5 degrees Fahrenheit. A value of 0x01 is 0.05F and 0x02 is 1.0F. The supported values may vary from thermostat to thermostat but typically the allowed values are 0.5F (0x01) to 4.0F (0x08).

The Thermostat Swing Temperature configuration command sets swing temperature on the thermostat. The swing temperature is applied to the setpoint to determine when the thermostat will turn on the HVAC system. If the thermostat is heating, the swing temper

Property Value      
Configuration ID config_7_1      
Data Type INTEGER   Default Value 2
Options 0.5° (1)      
  1.0° (2)      
  1.5° (3)      
  2.0° (4)      
  2.5° (5)      
  3.0° (6)      
  3.5° (7)      
  4.0° (8)      

8: Thermostat Diff Temperature

Configures additional stages

Overview

Sets the differential temperature for multi-stage HVAC systems. The differential temperature delta defines when the thermostat will turn on additional stages. This command configures both the heat and cool differential temperatures.

See the RTZW-02 manual for command definition.

Property Value      
Configuration ID config_8_1      
Data Type INTEGER   Default Value 4
Options 2.0 F (4)      
  4.0 F (8)      
  6.0 F (12)      

9: Thermostat Recovery Mode

Fast or Economy recovery mode.

Overview

The Thermostat Recovery Mode can be either fast (0x01) or economy (0x02).

Property Value
Configuration ID config_9_1
Data Type INTEGER
Range 1 to 2
Default Value 2

10: Temp Reporting Filter

Upper/Lower bounds for thermostat temperature reporting

Overview

Sets the upper/lower bounds for the thermostat reporting ambient temperature changes. The value must be between 0F and 124F. By default the value is set to 0F (report all changes).

Property Value
Configuration ID config_10_2
Data Type INTEGER
Range 0 to 65535
Default Value 0

11: Simple UI Mode

Simple Mode Enable/Disable

Overview

If the value is set to 0x00 then Normal Mode is enabled. If the value is set to 0x01 then Simple Mode is enabled.

Property Value
Configuration ID config_11_1
Data Type INTEGER
Range 0 to 1
Default Value 1

12: Multicast

Enable or disables Multicast

Overview

If set to 0, multicast is disabled, if set to 1, will enable the multicast.

Property Value
Configuration ID config_12_1
Data Type INTEGER
Range 0 to 1
Default Value 0

1: Group 1

Overview

This device support one association group, and up to two nodes in that group. If at least one node is added to association group one (1), the thermostat will send the following association reports when the respective state has changed:

• Thermostat Mode Report

• Thermostat Operating State Report

• Fan Mode Report

• Fan State Report

• Setpoint Report (for all supported setpoints)

• Sensor Multilevel Report (if enabled by Configuration Command Class)

The association command class can be configured to send encapsulated reports via the Multi Instance Command Class or the Multi Channel Command Class. If the association configuration commands are sent inside encapsulated commands, the thermostat will respond with encapsulated reports of the same type (Multi Instance v1 or Multi Channel v3). Encapsulation is the only way to configure the thermostat to send humidity sensor multilevel association reports.

For example, if an Association Set is encapsulated in a Multi Channel Command Encapsulation command is sent to the humidity instance (2), then the thermostat will encapsulate all un-solicited humidity sensor multilevel reports in the Multi Channel Command Encapsulation Command. The default instance is the temperature instance (1). If the Association Set is sent un-encapsulated then the thermostat will send all un-solicited temperature sensor multilevel reports unencapsulated.

All association reports other than the humidity multilevel are in the default instance (1). The thermostat will encapsulate the association reports based on the last Association Set encapsulation type received (i.e. un-encapsulated, Multi Instance v1, or Multi Channel V3).

Property Value
Configuration ID group_1
Data Type TEXT
Range to

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