Choice of thermostat
DEVI has developed a wide range of electronic thermostats to control the DEVI heating systems. Electronic thermostats regulate the temperature quickly and precisely and by choosing the optimal thermostat both comfortand financial benefits may be achieved. Before choosing a DEVI thermostat the following parameters should be considered.
Sensor type
1. Floor sensors are recommended with supplementary heating systems to ensure a pleasant floor temperature.
2. Room sensors are recommended where the Danfoss floor heating system is the only heat source in the room, and where the heating system is designed to supply full room heating.
3. A combination of both floor and room sensors is recommended in applications where the floor temperature needs to be limited but wherethe heating system is designed to supply full room heating, e.g. wooden floors.
Installation
The DEVI thermostats can be installed on the wall, in the wall or on a DIN rail.
If the thermostat uses an external sensor type, the thermostat can be mounted both in and outside the room. This is useful where the user shouldnot be able to adjust the control, e.g. hotels, schools etc.
Thermostats with room sensor on both floor and room sensors must always be installed in the room with the heating element.
Relay type
All DEEVI thermostats are equipped with a relay and therefore, they are able to control a contactor. Without an extra contactor each thermostat has a maximum load of the total output of the heating element.
This can be calculated as: maximum output = voltage power supply x relay ampere. (Example: 230 Vx 16 A = 3680 W).
Timer thermostats
The Devireg 550 is equipped with an intelligent timer while the Devireg 535 has an ordinary timer.
The intelligent part is that the Devireg 550 automatically finds out when to start heating in order to reach the user set temperature at the desired time.
This will be adjusted during the year, depending for example on the thermal conditions of a room. Being equipped with an ordinary timer system, the Devireg 535 does not start heating until a given user set time of the day.
Network
When more Devireg 550’s are installed in a house or an apartment, they can be combined in a network where one of the Devireg 550’s controls the others. This network function may also be used in combination with the Devicom™ – a device allowing a simultaneous monitoring and regulation of up to 31 Devireg 550’s via PC.
Heating Elements
The table below can be used as a guide for choosing the heating element.