User Guide for the GSM Thermostat ZONT H-1V

1. Purpose

The ZONT H-1 thermostat is designed for remote monitoring and control of a heating boiler. Configuration of operating modes and control of the thermostat are carried out via the GSM communication channel and the Internet. The device automatically regulates the operation of the boiler in heating mode according to the specified parameters in order to maintain the set indoor temperature. The thermostat can monitor the technical condition of the boiler and signal a malfunction in the event of an emergency or a power outage.

The thermostat can operate in two boiler control modes: relay mode (control via the boiler terminals intended for connection of a room thermostat) and OpenTherm control mode (connection must be made to the electronic board of a boiler supporting this protocol via a special “OpenTherm Interface” adapter).

Under the cover of the housing are located: 12\. SIM card holder slot 13\. Serial number 14\. GSM signal LED 15\. Boiler operation LED 16\. Power LED 17\. Backup power switch

2. Functional capabilities

Control of boiler operation and status monitoring via WEB interface

- Display of the current boiler status;
- Display of the current indoor temperature;
- Ability to select preset modes for maintaining the set temperature (air or heat carrier);
- Monitoring of temperatures (air, heat carrier, DHW) for any period of time;
- Programming of boiler operation according to a schedule;
- Display of information from additional sensors (leakage, gas leak, security).

Automatic event notification

- When the measured temperature deviates from the set threshold values;
- In case of a boiler emergency (provided the thermostat is connected to the boiler’s emergency output);
- In case of malfunction of connected temperature sensors;
- When the thermostat switches to emergency operation mode;
- When the mains power is lost (only with the backup battery enabled);
- When the mains power is restored (only with the backup battery enabled);
- When additional security sensors are triggered (Security alarm function).

Recording and storage of event history

- Boiler operating time and measured temperature values for any period of time;
- Time of boiler emergency detection;
- Time of power loss/restoration;
- Time of changes in boiler and thermostat operating modes;
- Executed control commands;
- SMS notifications;
- Firmware updates.

Remote firmware update

- Updating the current version of the thermostat firmware without turning off or dismantling the device.

3. Technical specifications

4. Scope of delivery

5. Methods of thermostat control

Control via mobile application and the Internet

The thermostat can be controlled via the Internet after registration in the online service https://zont-online.ru, as well as from a smartphone or tablet using the dedicated application https://zont-online.ru/app_mobile for Android and iOS mobile devices.

Control via telephone using the voice menu

To access the voice menu, call from a trusted phone number or from another number by entering the access password, to the phone number of the thermostat’s SIM card.

Voice menu structure (factory settings)

Comfort mode – phone key 1
Schedule mode – phone key 2
Economy mode – phone key 3
To check the SIM card balance, press key 5
To listen to the help message, press key * (asterisk)
To repeat the information, press key # (hash)

Control via SMS commands

The thermostat can be controlled via SMS commands from trusted phone numbers or from other numbers using a password.

Example:

1. Sending an SMS command to activate “Economy” mode with a new temperature of 18 degrees from a trusted phone number: режим эконом 18
2. Sending an SMS command to activate “Economy” mode with a new temperature of 18 degrees from a phone number not included in the trusted list: xxx режим эконом 18, where xxx is the access password.

* Disabling GPRS communication with the server sets the thermostat to an operating mode in which boiler control and monitoring via the WEB interface and mobile applications are not possible, but control is still available via SMS commands and voice menu calls. In case of any event covered by the monitoring system (temperature out of permissible range, boiler emergency, etc.), notifications will be made via calls and SMS messages.

6. Preparing the thermostat for operation

Open the top cover of the device (a thin screwdriver is required, which must be inserted into the housing slots).

Install the SIM card into the holder slot. Before installing the SIM card from the delivery set, top up the balance and register at https://tarif-priem-gsm.ru/index.php.

If another SIM card is used, make sure that the GPRS/SMS/USSD services are enabled and active, and that the account balance is above zero.

Connect an external GSM antenna and the power adapter to the thermostat. Plug the power adapter into a 220 V mains socket. The red LED (power indicator) will light up, and the green LED (GSM network) will start flashing slowly.

Attention! Wait until the green indicator is steadily lit (occasional brief flashes are acceptable) and proceed to register the thermostat in the online service.

7. Registration in the ZONT Online Service

Go to https://zont-online.ru, click the “Login” button and register. A confirmation email will be sent to the specified email address. If the email does not arrive for a long time, check the “Spam” folder. Follow the link to the personal account of the online service and, in the “Device List” section, click the “+” button.

In the opened window, select the type and model of the device to be added, fill in the required fields, and click the “Add” button. If you want to control the thermostat when calling from any numbers that are not pre-programmed as trusted, create and set your own Access Password.

If the password is not entered or not set, the system will not allow control and will terminate the call.

Carefully read the reference information to gain a complete understanding of the features of thermostat configuration and the rules for using the online service.

8. Configuring GSM control of the thermostat

Click the “Settings” menu key.

Open the “GSM Settings” menu and enter the trusted phone numbers (up to 5) from which the thermostat configuration and control will be available. This should be your phone number as well as the phone numbers of your trusted contacts.

Then open the “Notifications” menu and specify the phone numbers for receiving notifications about boiler malfunctions, power outages and restoration, and other events.

These may be the same numbers you have already assigned for thermostat control, or any others. Up to 5 numbers can be saved for receiving notifications.

The thermostat is now ready for connection to the boiler and configuration for remote control.

9. Assigning trusted phone numbers and access point via SMS

Configuring trusted phone numbers via SMS, as described in this section, is only necessary for thermostats manufactured before 01.09.2015 when using non-MegaFon SIM cards. If your thermostat was manufactured later, or if you have a MegaFon SIM card, you can configure trusted numbers via the web interface as described in the previous section 8.

- Turn on the thermostat’s power.

- If less than 5 minutes have passed since the thermostat was powered on, send an SMS command to the number of its SIM card: xxxxxxxxxxxx Телефон=+7xxxxxxxxxx
where xxxxxxxxxxxx is the thermostat serial number, and +7xxxxxxxxxx is your phone number.

- If more than 5 minutes have passed since the thermostat was powered on, turn it off and on again, wait for GSM network registration (the green LED on the front panel of the thermostat stays on), and then send the SMS command.

Example of SMS command:
305FE88406ED телефон=+79107954363

- Wait for confirmation in the reply SMS message: phone number set.

- Configure the GSM modem access point. To do this, send the second SMS command from the same phone:

APN=internet.beeline.ru if the thermostat uses a SIM card of the Beeline operator
APN=internet.mts.ru if the thermostat uses a SIM card of the MTS operator
APN=internet.tele2.ru if the thermostat uses a SIM card of the Tele2 operator

For SIM cards of other operators, check the access point settings with the technical support of that operator.

Attention! For all thermostats manufactured after September 1, 2015, GSM modem access point configuration is performed automatically.

10. Installation and connection of the thermostat

The thermostat is mounted on a DIN rail and connected according to the provided diagram.

11. Inputs, outputs, and connected equipment

Wired temperature sensors

Connected to contacts 4 and 6 of the thermostat according to the proposed diagram. Up to 10 sensors can be connected simultaneously. The distance of the last sensor in the loop must not exceed 100 m. Long branches from the main loop may lead to sensor malfunction.

Boiler control output

Contacts 1, 2, and 3 of the thermostat are intended for connection to the heating boiler. Contact No. 1 is common (C), contact No. 2 is normally closed (NC), and contact No. 3 is normally open (NO). The device connects to the boiler terminals intended for connecting a room thermostat.

GSM antenna

Connects to a dedicated input and is placed indoors to ensure maximum stable GSM signal reception.

Main power +12 V

From the 220 V mains via the power adapter (220/12 V) supplied in the kit.

Backup power +3.7 V

From the built-in Li-ion battery.

Input 1 Analog input – contact No. 5.

Intended for connection of either security sensors; or “Boiler fault” signal; or room thermostat.

Input 2 Digital input – contact No. 8.

Intended for connection of either security sensors; or “Boiler fault” signal; or room thermostat; or OpenTherm Interface and ML-489 Radio Module.

Important!
It is not allowed to connect signals from an external room thermostat or “Boiler fault” signals to both inputs simultaneously.
It is allowed to connect the OpenTherm Interface and ML-489 Radio Module to Input 2 simultaneously.

Security sensors and detectors

Connected to one input and must be of the same connection type. Number of sensors in the loop:

- IRD, MSD, etc. – no more than 10;
- Water leak and gas leak detectors – no more than 5;
Maximum distance of the last detector in the loop – 100 m.

“Boiler fault” signal

To receive notifications in case of a boiler fault, connect the “Fault” signal generated by the boiler to one of the thermostat inputs. When the thermostat input is shorted to ground, a boiler fault notification is generated. For connection options, see section 17 of this manual.

Room thermostat

Connecting a room thermostat allows you to control the boiler both remotely (via ZONT H-1V) and manually from the room thermostat. The control mode is selected via the online service or by SMS command “Manual mode”.

When operating from a room thermostat, remote temperature monitoring and all notification modes (fault, power loss/restoration, alarms, etc.) remain active.

OpenTherm Interface

This device provides diagnostics of the technical condition and control of the gas boiler via the OpenTherm protocol.

Using the OpenTherm interface significantly expands system functionality, but the boiler itself must support the OpenTherm standard.

ML-489 Radio Module

Module for receiving/transmitting radio signals from wireless devices used with the thermostat. Currently, these are ML-703 radio temperature sensors and ZONT-Home radio key fobs.

12. Connecting the thermostat to the boiler in relay control mode

The ZONT thermostat connects to the boiler terminals intended for connecting a room thermostat.

To turn on the boiler when using a room thermostat, two terminals must be shorted. At the factory, a jumper is installed on these terminals, and if the thermostat is not used, the boiler is always on. When connecting a room thermostat, remove this jumper and connect these boiler terminals to the thermostat relay.

The ZONT thermostat in relay mode switches its output relay on or off. According to the documentation for the connected boiler, find the terminals for connecting an external thermostat. Most likely, they will have a jumper. To verify, remove the jumper – the boiler should turn off. When the jumper is returned, the boiler should turn on. Observe safety precautions – the terminals may carry 220 V voltage. Some boilers are turned on by opening the terminals instead of closing them. In this case, there will be no jumper.

Some boilers do not have terminals for connecting an external thermostat, for example, boilers with their own external room thermostat operating on a two-wire computer bus. In this case, connection of the ZONT thermostat is not possible.

To control the boiler, the ZONT thermostat has an output relay on contacts 1, 2, and 3. The contacts are labeled “COMMON”, “NC”, and “NO”. Two of the three contacts must be connected to the boiler.

Control of output relay contacts

If the boiler is turned on by closing the contacts, use terminals 1-2.
If the boiler is turned on by opening the contacts, use terminals 1-3.

13. Connecting the thermostat to the boiler in OpenTherm control mode

In this control mode, the ZONT thermostat is connected to the boiler control board via a special “OpenTherm Interface” adapter (not included in the thermostat package). For connection features and thermostat configuration for operation in this mode, see the OpenTherm Interface manual.

14. Powering on and starting operation

After registering the thermostat in the ZONT online service, assigning trusted numbers for control and notifications, installing the thermostat, and connecting it to the boiler, turn on the backup battery. To do this, remove the top cover of the thermostat housing and move the power switch on the board from “OFF” to “ON”. Plug the power adapter into a 220 V socket.

Red LED – lights up when power is present.

Green LED – indicates GSM signal and connection to the Server:

- brief single flash – no GSM signal;
- brief series of flashes – GSM signal present, no connection to the Server;
- steady light with occasional short offs – connection to the Server established.

Yellow LED – indicates the boiler is operating in heating mode.

Attention! By default, the thermostat is set to “Anti-freeze” mode, i.e., maintaining the minimum set temperature, which is +5 °C.

15. Thermostat operation algorithm

The thermostat measures the room temperature using the connected temperature sensor and switches the output relay on or off, controlling the boiler in heating mode so that the indoor temperature matches the set value.

Up to 10 temperature sensors can be connected to the thermostat simultaneously. The sensor whose readings are used to control the boiler is the main one. One additional sensor can be assigned as a backup. If the main sensor fails, the thermostat automatically switches to the backup instead of going into emergency mode. Data from other sensors is used only for general temperature monitoring.

16. Configuring thermostat operating parameters via the online service

Programming thermostat operating modes

Mode parameters (set temperatures) are configured in the “Settings” menu, “Thermostat modes” tab. Up to 10 different modes can be created, and mode names can be changed (renamed) by the user.

Settings can be “Standard”:

and “Advanced”:

Thermostat operating mode control (selection) is carried out from the “Thermostat” menu

Factory settings (mode names):

- Economy and Comfort – maintaining a set fixed temperature t1 or t2.

- Schedule – maintaining the temperature according to a set schedule.

- Off – complete shutdown of the boiler.

- Room thermostat – control of the boiler according to commands from an external room thermostat. When this mode is enabled, other modes become unavailable. When the “Room thermostat” mode is disabled, the interrupted operating mode is restored.

- Hot water – enabling the DHW mode (only when controlled via OpenTherm).

Target temperature control

These settings are intended for manually changing the target temperature of the current mode (buttons “+” or “-”).
The changes made are not saved in the thermostat mode settings.

Example: If the “Comfort” mode was active and the target temperature was manually changed, switching to the “Economy” mode and then returning to “Comfort” will restore the target temperature from the saved settings, and the manual change will be discarded.

A mode modified manually is marked with the “pencil” symbol.

Monitoring measured temperature values

This section displays all temperature sensors registered (connected) to the thermostat and the temperatures they measure. If a sensor is wireless, its display also shows information about battery status (charge) and radio signal reception quality.

17. Guest access configuration

The system provides a “Guest login” function, allowing access to view the boiler status and thermostat operating modes without the ability to change or reconfigure them.

Click the “Profile” button and update your account settings.

The “Guest login” feature can be useful for a service technician to remotely monitor the boiler parameters and the heating system as a whole.

18. Configuring the automatic alert system for alarm events

The configuration of types and methods of alerts generated by the thermostat for various events is carried out from the personal account of the ZONT online service.

When an event is detected, the thermostat generates and sends an informational SMS message to the programmed phone numbers and also displays this information in the “Important events” tab of the online service.

Notification of power outage/restoration

Notification is possible only if the backup battery is enabled.

Attention! When powered by the backup battery, the thermostat does not control the boiler.

Notification of deviation of measured temperature from set threshold values

Up to 10 temperature sensors can be connected to the thermostat simultaneously. For each sensor, you can set threshold values; exceeding these values will trigger an alarm notification.

Attention: Do not set temperature thresholds too close to the normal operating temperature of the boiler, as a repeat (new) notification of temperature dropping below the lower threshold will only be possible after the temperature has moved 3° away from the set threshold (the ±3°C hysteresis for temperature sensor thresholds).

Notification of thermostat switching to emergency mode

The thermostat controls the boiler based on the temperature measured by the sensor designated as the primary one. If it fails, the thermostat automatically switches to the backup sensor, and if none is assigned or available, it switches to emergency mode.

Notification of boiler fault

To receive boiler fault notifications, connect the “Fault” signal generated by the boiler to one of the thermostat inputs. When the thermostat input is shorted to ground, a boiler fault notification is generated.

Possible connection diagrams:

The “Fault” signal is AC 220 V. It must be connected to the thermostat through a 220/5 V adapter (not included in the delivery set and purchased separately).

The output contact of the boiler’s fault connector is of the “dry contact” type. Direct connection to the thermostat input is allowed.

The “Fault” signal is voltage of x V. It must be connected to the thermostat through an appropriate relay.

19. Additional capabilities of the ZONT thermostat

“GSM Alarm” function

Inputs 1 and 2 of the thermostat can be connected to various security sensors and detectors. For the thermostat to monitor the state of connected sensors, the inputs must be configured in the “Settings” menu. Wiring diagrams for different sensors can also be viewed there.

Features of connecting security sensors to the thermostat

Motion sensors are connected with normally closed contacts to ground.

Leak detectors are powered from the loop at 3.3 V and are triggered when the voltage drops below 2.4 V.

Gas leak detectors are triggered when the normally closed loop to ground is opened.

Panic buttons are connected with normally open contacts to ground.

Options for input configuration when connecting security sensors

- “Not used” – select if the security sensor is not connected; otherwise, false alarms may occur.
- “Motion sensor with delay” – triggered when the loop is opened, with a 30-second delay; message generated: “motion detected”.
- “Motion sensor without delay” – triggered when the loop is opened; message generated: “motion detected”.
- “Water leak sensor” – triggered when voltage drops below 2.4 V; message generated: “water leak detected”.
- “Gas leak sensor” – triggered when the loop to ground is opened; message generated: “gas leak detected”.
- “Panic button” – triggered when closed to ground.
- “Short-to-ground sensor” – triggered when closed to ground.
- “Open-to-ground sensor” – triggered when the loop to ground is opened.

Control of the security mode (enabling and disabling security sensors)

Security mode control is available from the “Status” menu of the online service or mobile application, as well as via SMS commands or commands from the ZONT Home radio key fob (not included in the delivery set, purchased separately).

The “Security” button in the menu is displayed only for the following connection options:

- “Motion sensor”,
- “Motion sensor with delay”,
- “Short-to-ground sensor”,
- “Open-to-ground sensor”.

For other connection options, the “Security” control button is not available, meaning the input is considered always active.

If a security sensor or detector connected to the thermostat is triggered, an alarm message is generated and sent to you by the method selected during configuration.

20. Use of radio devices

Attention! Radio devices must be ZONT-branded.

These include radio thermometers, radio leak detectors, radio motion detectors, and radio key fobs. They can be used with the thermostat only if the ZONT ML-489 radio module is connected to Input 2 of the thermostat (not included in the delivery set, purchased separately).

Registration of radio devices is carried out from the personal account of the online service, in the Radio devices settings.

ML-489 Radio Module – ZONT Thermostat
Pink wire – Input No. 2
Black wire – “-” main power
Red wire – “+” main power

Registering radio thermometers, radio leak detectors, and radio motion detectors:

Open the case of the device to be registered and locate the registration mode activation button on the board.

In the online service settings, click the “Add devices” button. The time allotted for device registration will start counting down. Registration is available for 3 minutes.

Press and hold the button on the device’s board until the LED lights up.

The registered device should appear in the radio devices menu.

Registering radio key fobs:

In the online service settings, click the “Add devices” button. The time allotted for new key fob registration will start counting down. Registration is available for 3 minutes.

Simultaneously press and hold both the “Security on” and “Security off” buttons (open and closed lock symbols). Successful registration is indicated by a brief (~1 sec) LED light on the key fob.

Registered key fobs should appear in the radio devices menu.

21. Description of the thermostat algorithm in “WCA” mode

Attention! The WCA mode cannot be used together with the boiler’s built-in WCA mode.

The “Weather-Compensated Automation” mode implemented in the ZONT thermostat is designed to control the boiler operation based on outdoor temperature data. The colder it is outside, the greater the boiler output expected. The advantage of using WCA mode is that the heating system heat carrier temperature remains constant, without fluctuations. This saves fuel and extends boiler service life.

The WCA algorithm is based on certain pre-calculated dependencies between outdoor temperatures and heat carrier temperature, sufficient to maintain an indoor target temperature of 20 °C.

The “Weather-Compensated Automation” mode is a background mode and works together with all other thermostat modes.

Classic WCA mode when controlling the boiler in relay mode

To implement the classic WCA mode in the ZONT thermostat, three temperature sensors must be properly connected and configured in the “Temperature sensors” menu of the online service, in the “Sensor assignment” section:

1st sensor – “Regulation” – not used, no assignment required.

2nd sensor – “Heat carrier temperature” – used by the thermostat to control the boiler in heating mode. This sensor must be securely attached to the supply pipeline, ensuring good thermal contact with the pipe and good thermal insulation from the surrounding air.

3rd sensor – “Backup regulation” – used by the thermostat as a backup if the “Heat carrier temperature” sensor fails. It should be mounted in the same way as the 2nd sensor.

4th sensor – “Outdoor temperature” – installed outside to measure the outdoor temperature. It is recommended to install it on the north side, in the shade, and protect it from precipitation and heat sources.

To enable WCA mode, in the “Weather-Compensated Automation” menu of the online service, move the activation slider to the right and select one of the proposed curves. The correct curve is determined empirically based on tests. Since the house has significant thermal inertia, the correct choice may be clear only after some time. If the house is “underheated”, select a steeper curve; if “overheated”, choose a gentler one.

All curves are set for a target temperature of 20 °C. If a different target temperature is required, the curves shift automatically.

Attention! If the boiler in WCA mode starts frequent on/off cycling, it is recommended to increase the hysteresis (for example, to 2–3 degrees).

WCA mode when controlling the boiler in relay mode using indoor temperature

Experience shows that only the dependency of the heat carrier temperature on the outdoor temperature is not sufficient. For example, a room may be heated by sunlight or cooled by an open window, it may be empty or full of people, and so on. Therefore, the WCA algorithm can also include a temperature sensor installed inside the room.

In the “Temperature sensors” menu of the online service, the sensors are configured as follows:

1st sensor – “Regulation” – placed in the room whose temperature is taken as the main (target) value for boiler control;

2nd sensor – “Backup regulation” – used by the thermostat as a backup if the 1st sensor fails. It is placed in the same room as the 1st sensor;

3rd sensor – “Heat carrier temperature” – used by the thermostat to monitor the heat carrier temperature;

4th sensor – “Outdoor temperature” – installed outside to measure the outdoor temperature.

For operation in this mode, a temperature curve for outdoor temperature dependencies should be selected so that the target indoor temperature is accurately achieved, with some margin. Once the room reaches the set temperature, the normal room temperature maintenance algorithm is activated. The WCA-calculated heat carrier temperature becomes the maximum allowable value, i.e., the upper limit.

Thus, maintaining the set (target) room temperature is reduced to switching the boiler on and off, while ensuring that the maximum heat carrier temperature does not exceed the value calculated by WCA.

.

WCA mode when controlling the boiler via OpenTherm

In this case, the heat carrier temperature data is obtained from the boiler’s built-in sensor, and it is not necessary to connect an additional sensor to the heat carrier pipe. Otherwise, WCA modes with OpenTherm are identical to the relay modes described above. They are also of two types: classic and using indoor temperature.

Attention! WCA mode cannot be used together with the boiler’s built-in WCA mode.

22. Service life and warranty period

The service life of the ZONT H-1 thermostat is 7 years, provided that the consumer follows the requirements of the current operating documentation.

The warranty period is 12 months from the date of sale.

The warranty is valid only if a completed warranty card is provided, indicating the date of sale, the name and seal of the seller, and the buyer’s signature. A warranty card with corrections is considered invalid.

During the warranty period, the owner has the right to free repair of the product in case of malfunctions resulting from manufacturing defects.

The manufacturer is not responsible for any harm directly or indirectly caused by its products to people, pets, or property if this occurred as a result of failure to comply with the rules and conditions for installation and operation of the product, or due to careless or intentional actions by the consumer or third parties.

Claims regarding quality are not accepted and warranty repairs are not carried out in the following cases:

- If a properly completed warranty card and sales receipt are not provided;
- If the consumer fails to comply with the product manual requirements or uses the product for purposes other than intended;
- If there are mechanical damages to the product (damage to the housing, wire breaks or short circuits) caused by improper use, transportation, storage, exposure to aggressive environments, high temperatures, or ingress of foreign objects inside the product;
- In case of self-repair by the owner or third parties, modification of the design and electrical circuit, or violation of warranty seals.

23. Operating and storage conditions

The thermostat may be transported in shipping containers by all types of covered land and water transport (in railway cars, containers, closed vehicles, holds, etc.) in accordance with the cargo transportation rules applicable to each type of transport.

Transportation conditions – group II according to GOST 15150-69, with a low-temperature exposure limit down to -40 °C.

Storage conditions at the supplier’s and consumer’s warehouses – group II according to GOST 15150-69, with a low-temperature exposure limit down to -40 °C.

24. Manufacturer: LLC “Voskhod”, owner of the trademark “Micro Line”

Russia, 607630, Nizhny Novgorod Region, Bogorodsky District, Kudma settlement, Zavodskaya St., Building 2, Room 1
Tel/Fax: (831) 220-76-76
Technical Support Service: 8-800-700-37-43

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