Master V.3 PLUS/EU-i-3 PLUS Open Therm heating control for 3 mixed and unmixed heating circuits
The PLUS version with extended functions (see below). The new eModule allows full access to all setting parameters.
A modern and energy-efficient house requires several alternative heat sources. However, to achieve real savings...
To be able to communicate effectively, a unified system for managing these systems is required. The control units for heating systems from the company MASTER
enable powerful and efficient control of a system with multiple heat sources (e.g. solar collectors and central heating boilers).
This integration reduces energy consumption. The use of control units in the system facilitates...
Operating all devices saves time and money and ensures comprehensive heating comfort.
The latest version now also supports OpenTherm (OT)
OpenTherm (OT for short) is a protocol developed for controlling central heating systems using room thermostats. OpenTherm uses point-to-point communication, where the thermostat is typically the master and the heat generator is the slave. Multi-point-to-point communication allows for the interconnection of multiple devices.
OpenTherm is manufacturer-independent. A controller from manufacturer A can communicate with a heating system from manufacturer B.
A digital, bidirectional data exchange takes place between the thermostat (master) and the boiler (slave). Sending status reports and requesting information between the two devices is possible. However, the most common command relates to boiler temperature control. When the boiler receives the setpoint temperature request, it begins to modulate (increase or decrease the heating output) to reach and maintain the setpoint temperature. The room thermostat continuously recalculates the boiler temperature to keep the room temperature at the setpoint. This results in higher energy efficiency.
Special features:
- Continuous control of three mixing valves
- Hot water pump control
- supports a solar power system
- Return temperature safety device
- Weather and weekly schedule
- affordable by solar-more
- two configured potential-free outputs
- two configured voltage outputs
- two configurable 0-10V outputs (PLUS VERSION)
- Solar pump output with PWM signal (PLUS VERSION)
- Cascade connection of 4 heat generators (PLUS VERSION)
- Communication between three two-point room thermostats
- Communication with a room thermostat with RS communication
- Expansion of an EU-505 or EU-WIFI-RS module
- Control of two additional valves using additional modules EU-I-1-M, EU-I-1, EU-i-1 WW
- Updating the program version via a USB connection
- OpenTherm (OT)
Technical data:
- Boiler temperature setting range - from 10 to 99°C
- Floor temperature setting range - from 10 to 50°C
- Hot water temperature setting range - 5 to 80°C
- Mains voltage 230V/50Hz
- Rated load of the outputs 0.5A
- 6.3A fuse
- Temperature resistance of the sensors - from -30 to 99°C
Equipment
- LCD display
- Boiler temperature sensor
- Flow temperature sensor
- Return temperature sensor
- solar sensor
- Outdoor sensor
- wall mounting
- KTY 81-210 type sensors with a diameter of 5mm are used here.
Scope of delivery:
- EU-i-3 PLUS control unit
- A total of 5 sensors + 1 external sensor
Download
