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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.

The CT80 supports routing. This allows the device to communicate using other routing enabled devices as intermediate routers. This device is also able to participate in the routing of data from other devices.

Overview

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 -:

Channel Channel Id Category Item Type
Sensor (temperature) sensor_temperature Temperature Number
Thermostat Mode thermostat_mode Temperature Number
Operating State thermostat_state Temperature Number
Setpoint (cooling) thermostat_setpoint Temperature Number
Setpoint (heating) thermostat_setpoint Temperature Number
Thermostat Fan Mode thermostat_fanmode    
Battery Level battery-level Battery Number
Clock Time Offset time_offset Temperature Number
Sensor (relative humidity) sensor_relhumidity1 Humidity Number

Sensor (temperature)

Indicates the current temperature.

The sensor_temperature channel supports the Number item and is in the Temperature category. This is a read only channel so will only be updated following state changes from the device.

Thermostat Mode

Sets the thermostat.

The thermostat_mode channel supports the Number item and is in the Temperature category. The following state translation is provided for this channel to the Number item type -:

Value Label
0 Off
1 Heat
2 Cool
3 Auto
4 Aux Heat
5 Resume
6 Fan Only
7 Furnace
8 Dry Air
9 Moist Air
10 Auto Changeover
11 Heat Economy
12 Cool Economy
13 Away
15 Full Power
31 Manufacturer Specific

Operating State

Sets the thermostat operating state.

The thermostat_state channel supports the Number item and is in the Temperature category. The following state translation is provided for this channel to the Number item type -:

Value Label
0 Idle
1 Heating
2 Cooling
3 Fan Only
4 Pending Heat
5 Pending Cool
6 Vent / Economiser

Setpoint (cooling)

Sets the thermostate setpoint.

The thermostat_setpoint channel supports the Number item and is in the Temperature category.

Setpoint (heating)

Sets the thermostate setpoint.

The thermostat_setpoint channel supports the Number item and is in the Temperature category.

Thermostat Fan Mode

Channel type information on this channel is not found.

Battery Level

Represents the battery level as a percentage (0-100%). Bindings for things supporting battery level in a different format (e.g. 4 levels) should convert to a percentage to provide a consistent battery level reading.

The battery-level channel supports the Number item and is in the Battery category.

Clock Time Offset

Provides the current time difference for the devices time.

The time_offset channel supports the Number item and is in the Temperature category.

Sensor (relative humidity)

Indicates the current relative humidity.

The sensor_relhumidity1 channel supports the Number item and is in the Humidity category. This is a read only channel so will only be updated following state changes from the device.

Device Configuration

The following table provides a summary of the 12 configuration parameters available in the CT80. Detailed information on each parameter can be found in the sections below.

Param Name 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

Parameter 1: Temperature Reporting Threshold

Reporting threshold for changes in the ambient temperature. This value determines the reporting threshold when association reporting is enabled. Unsupported values will be ignored. The following option values may be configured -:

Value Description
0 Disabled
1 0.5°
2 1.0°
3 1.5°
4 2.0°

The manufacturer defined default value is 2 (1.0°).

This parameter has the configuration ID config_1_1 and is of type INTEGER.

Parameter 2: HVAC Settings

Configured HVAC settings 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 Values in the range 0 to 0 may be set.

The manufacturer defined default value is 0.

This parameter has the configuration ID config_2_4 and is of type INTEGER. This is a read only parameter.

Parameter 3: Utility Lock Enable/Disable

Prevents setpoint changes at thermostat. 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. The following option values may be configured -:

Value Description
0 Utility lock disabled
1 Utility lock enabled

The manufacturer defined default value is 0 (Utility lock disabled).

This parameter has the configuration ID config_3_1 and is of type INTEGER.

Parameter 4: Power Status

C-Wire / Battery Status If 0x01, the thermostat is being powered from a C-wire, if 0x02, the thermostat is being powered off of batteries. Values in the range 0 to 0 may be set.

The manufacturer defined default value is 0.

This parameter has the configuration ID config_4_1 and is of type INTEGER. This is a read only parameter.

Parameter 5: Humidity Reporting Threshold

Reporting threshold for changes in the relative humidity. This value determines the reporting threshold when association reporting is enabled. Unsupported values will be ignored. The following option values may be configured -:

Value Description
0 Disabled
1 3% RH
2 5% RH
3 10%RH

The manufacturer defined default value is 0 (Disabled).

This parameter has the configuration ID config_5_1 and is of type INTEGER.

Parameter 6: Auxiliary/Emergency

Enables or disables auxiliary / emergency heating 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. The following option values may be configured -:

Value Description
0 Auxiliary/Emergency heat disabled
1 Auxiliary/Emergency heat enable

The manufacturer defined default value is 0 (Auxiliary/Emergency heat disabled).

This parameter has the configuration ID config_6_1 and is of type INTEGER.

Parameter 7: Thermostat Swing Temperature

Variance allowed from setpoint to engage HVAC 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 The following option values may be configured -:

Value Description
1 0.5°
2 1.0°
3 1.5°
4 2.0°
5 2.5°
6 3.0°
7 3.5°
8 4.0°

The manufacturer defined default value is 2 (1.0°).

This parameter has the configuration ID config_7_1 and is of type INTEGER.

Parameter 8: Thermostat Diff Temperature

Configures additional stages 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. The following option values may be configured -:

Value Description
4 2.0 F
8 4.0 F
12 6.0 F

The manufacturer defined default value is 4 (2.0 F).

This parameter has the configuration ID config_8_1 and is of type INTEGER.

Parameter 9: Thermostat Recovery Mode

Fast or Economy recovery mode. The Thermostat Recovery Mode can be either fast (0x01) or economy (0x02). Values in the range 1 to 2 may be set.

The manufacturer defined default value is 2.

This parameter has the configuration ID config_9_1 and is of type INTEGER.

Parameter 10: Temp Reporting Filter

Upper/Lower bounds for thermostat temperature reporting 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). Values in the range 0 to 0 may be set.

The manufacturer defined default value is 0.

This parameter has the configuration ID config_10_2 and is of type INTEGER.

Parameter 11: Simple UI Mode

Simple Mode Enable/Disable If the value is set to 0x00 then Normal Mode is enabled. If the value is set to 0x01 then Simple Mode is enabled. Values in the range 0 to 1 may be set.

The manufacturer defined default value is 1.

This parameter has the configuration ID config_11_1 and is of type INTEGER.

Parameter 12: Multicast

Enable or disables Multicast If set to 0, multicast is disabled, if set to 1, will enable the multicast. Values in the range 0 to 1 may be set.

The manufacturer defined default value is 0.

This parameter has the configuration ID config_12_1 and is of type INTEGER.

Association Groups

Association groups allow the device to send unsolicited reports to the controller, or other devices in the network. Using association groups can allow you to eliminate polling, providing instant feedback of a device state change without unnecessary network traffic.

The CT80 supports 1 association group.

Group 1: Group 1

This group supports 2 nodes.

Technical Information

Endpoints

Endpoint 0

| Command Class | Comment | |—————|———| | COMMAND_CLASS_BASIC_V1| | | COMMAND_CLASS_SENSOR_MULTILEVEL_V2| | | COMMAND_CLASS_THERMOSTAT_MODE_V2| | | COMMAND_CLASS_THERMOSTAT_OPERATING_STATE_V1| | | COMMAND_CLASS_THERMOSTAT_SETPOINT_V2| | | COMMAND_CLASS_THERMOSTAT_FAN_MODE_V1| | | COMMAND_CLASS_THERMOSTAT_FAN_STATE_V1| | | COMMAND_CLASS_CONFIGURATION_V1| | | COMMAND_CLASS_MANUFACTURER_SPECIFIC_V2| | | COMMAND_CLASS_BATTERY_V1| | | COMMAND_CLASS_CLOCK_V1| | | COMMAND_CLASS_ASSOCIATION_V1| | | COMMAND_CLASS_VERSION_V1| | | COMMAND_CLASS_INDICATOR_V1| |

Endpoint 1

Command Class Comment
COMMAND_CLASS_SENSOR_MULTILEVEL_V2  
COMMAND_CLASS_ASSOCIATION_V1  

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