HeatIt Z-TRM7 – Thermostat, Z-Wave 800, white (5430571)

The Heatit Z-TRM7 is a 230 V, 16 A Z-Wave thermostat for controlling electric heating and hydronic heating systems. Its built-in relay supports a maximum load of 3600 W / 16 A with resistive loads. For loads above 13 A, the manufacturer recommends using a contactor.

The thermostat has a built-in room temperature sensor and supports up to two additional wired external temperature sensors, for example for floor temperature and external room temperature measurement. Regulation can be based on hysteresis or PWM control, and a sensorless power regulator mode is also available. Its three operating modes are Heat, Cool and Eco.

The Heatit Z-TRM7 features a Z-Wave 800 series radio chip and communicates over Z-Wave at 868.4 MHz. SmartStart, OTA firmware updates, and S0, S2 Authenticated and S2 Unauthenticated security are supported. Through Z-Wave associations, the thermostat can operate as a master thermostat and control up to 10 other thermostats and 10 external relays.

About Heatit

Heatit offers Norwegian-developed heating control and smart home products. Its range includes wall-mounted and DIN rail-mounted thermostats, Z-Wave and Wi-Fi controllers, relays, sensors, heating cables and electric heating solutions.

Depending on the model, Heatit smart thermostats use Wi-Fi, Bluetooth or Z-Wave communication. Z-Wave models can be integrated into standard Z-Wave networks, while the actually available control, measurement and automation functions depend on device support provided by the Z-Wave controller being used.

Key product features

• Z-Wave: Can be controlled through a Z-Wave network.
• Built-in room temperature sensor: Measures the temperature of the room.
• External room temperature sensor: A wired external room temperature sensor can be connected.
• Floor sensor: A wired floor temperature sensor can be connected.
• Three operating modes: Heat, Cool and Eco modes.
• Power regulator: Heating can be controlled without using the thermostat's internal or external temperature sensors.
• Temperature limitation: Temperature control limits can be configured.
• Temperature calibration: The measured temperature can be adjusted.
• Hysteresis/PWM: Regulation can be based on hysteresis or PWM control.
• ZeroX™ detection: The relay switches on and off at the mains voltage zero crossing.
• Open-window detection: The thermostat can interrupt heating when a rapid temperature drop is detected.
• Relay status display: The current relay state can be shown on the display.
• Adjustable display brightness: The display brightness can be adjusted.
• Single-pole switching: The thermostat uses single-pole switching.
• Lock and child lock: Local controls can be locked.
• Temperature display in the Z-Wave controller: Measured temperature values can be transmitted to the Z-Wave gateway.
• Weekly schedule: Weekly scheduling can be configured in the Z-Wave controller being used.
• Active power monitoring: Supports real-time power measurement.
• SmartStart: Supports Z-Wave SmartStart.
• OTA firmware updates: Firmware can be updated over the Z-Wave network.
• Z-Wave security: Supports S0, S2 Authenticated and S2 Unauthenticated security modes.

Smart home protocols and platform compatibility

• Z-Wave: Its primary smart home protocol is Z-Wave, operating on the European 868.4 MHz frequency.
• Z-Wave 800: Features a Z-Wave 800 series radio chip.
• SmartStart: Simplified network inclusion can be used with compatible Z-Wave controllers.
• Z-Wave Security: S0, S2 Authenticated and S2 Unauthenticated security modes are supported.
• Z-Wave associations: The thermostat can directly control other devices through Z-Wave associations.
• Master thermostat: Through associations, it can control up to 10 thermostats and 10 external relays, such as Z-Wave smart plugs.
• Z-Wave gateways: Can be integrated into a standard Z-Wave network. Available parameters, measured values, schedules and automation options depend on device support provided by the Z-Wave controller being used.

Smart features

• Remote temperature control: The target temperature can be adjusted remotely through a compatible Z-Wave controller.
• Heat mode: Used for thermostatic control of a heating system.
• Cool mode: Used for controlling a cooling system.
• Eco mode: Provides a separate energy-saving temperature mode.
• Hysteresis control: The relay switches on and off based on the set temperature and configured hysteresis. Hysteresis can be adjusted from 0.3 to 3.0, with a default value of 0.5.
• PWM control: The thermostat controls the load using percentage-based ON and OFF periods within operating cycles.
• Power regulator: The thermostat can also operate as a time-based power regulator without using temperature sensors. The cycle time can be set from 0 to 30 minutes.
• Open-window detection: In the event of a rapid temperature drop, the thermostat can detect an open window and interrupt heating.
• Temperature limitation: Temperature control limits can be configured.
• Temperature calibration: The measured temperature can be adjusted to suit the installation environment.
• Active power monitoring: The thermostat measures the active power of the connected load in real time.
• Contactor operation: When a contactor is used, the power measurement value can be entered manually.
• Weekly schedule: A weekly schedule can be created in a compatible Z-Wave controller.
• Master thermostat function: Other thermostats and relays can be controlled through direct Z-Wave associations.
• Child lock: The local controls can be locked.
• Display brightness: The display brightness can be adjusted.
• OTA update: Firmware can be updated over the Z-Wave network.

Electrical features

• Supply voltage: 230 V AC, 50 Hz.
• Output voltage: 230 V AC, 50 Hz.
• Maximum load: 3600 W / 16 A resistive load.
• Loads above 13 A: The manufacturer recommends using a contactor.
• Load type: For direct switching, the thermostat is designed for resistive loads. A suitable contactor must be used for large resistive, capacitive or inductive loads.
• Switching: Single-pole relay output.
• ZeroX™ switching: The relay switches on and off at the mains voltage zero crossing.
• Power consumption: 2 W.
• Active power monitoring: The real-time active power of the connected load can be measured.
• Wire cross-section: 0.2–2.5 mm².
• Connection: Screw terminals.
• Maximum terminal tightening torque: 2 Nm.
• Grounding: The device does not have a grounding terminal.

Technical specifications

• Product name: Heatit Z-TRM7
• Article number: 5430572
• GTIN: 7071236019794
• Material: Polycarbonate (PC)
• Installation: European wall box, System 55
• Supply voltage: 230 V AC, 50 Hz
• Output voltage: 230 V AC, 50 Hz
• Maximum resistive load: 3600 W / 16 A
• Power consumption: 2 W
• Switch type: Single-pole
• Temperature control range: 5–40 °C
• Temperature measurement range: 5–40 °C
• Temperature sensitivity: ±0.5 °C
• Temperature tolerance: 0.5 °C
• Hysteresis: 0.3–3.0; default value 0.5
• Power regulator cycle time: 0–30 minutes
• Compatible NTC sensors: 6.8 / 10 / 12 / 15 / 22 / 33 / 47 / 100 kΩ at 25 °C
• Default NTC value: 10 kΩ at 25 °C
• Maximum NTC sensor cable length: 50 m
• External sensors: Up to 2 wired external temperature sensors
• Z-Wave frequency: 868.4 MHz, EU
• Z-Wave chip: Z-Wave 800 series
• Minimum radio range: 40 m
• Z-Wave security: S0, S2 Authenticated Class, S2 Unauthenticated Class
• FLiRS: No
• SmartStart: Yes
• OTA firmware update: Yes
• Number of buttons: 3
• Wire cross-section: 0.2–2.5 mm²
• Connection: Screw terminals
• Maximum tightening torque: 2 Nm
• Operating ambient temperature: 5–40 °C
• Storage temperature: -30–70 °C
• Installation temperature: 5–40 °C
• Relative humidity: 10–85%
• IP rating: IP21
• Certifications: LVD, REACH, RED, RoHS
• Warranty: 2 years

Additional features

• Metal mounting frame: The thermostat can be secured in the wall box using a metal mounting frame.
• System 55 compatibility: Compatible with most System 55-style installation frames.
• Indoor use: Intended for indoor installation only.
• Local control: In addition to Z-Wave control, the thermostat can also be operated using the front-panel controls.
• Master thermostat: Multiple Z-Wave associations can be configured; the thermostat can directly control up to 10 thermostats and 10 external relays.
• Heating and cooling: Features Heat, Cool and Eco operating modes.