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Room temperature controllers

Application

Room temperature controllers for heating/cooling coils or for zone heating,supplied with an NTC 10 kω internal sensing element. Designed for On-Off control of fans and zone valves or for modulating control of reversible control valves with 3-wire electric control.
Individual or centralised season switching.
C-Bus compatible.
RTB 040 can be used as a time switch for 24-hour or 7-day programming.
RTB 540 is provided with a display for modifying programme in use and desired temperature.
Optional sensors: 1 room temperature sensor for fan coils or air duct.

Schematic diagram Certification Catalogue

Code	Control outputs	Setpoint adjuster	Data Sheet
RTB 040	1 On-Off hot or cold (fan or 2-3 wire valve)	–	B 520
RTB 140	1 On-Off hot or cold (fan or 2-3 wire valve)	± 15 °C	B 520
RTB 041	1 modulating hot or cold (3-wire valve) + 1 On-Off (fan)	–	B 520
RTB 141	1 modulating hot or cold (3-wire valve) + 1 On-Off (fan)	± 15 °C	B 520

Features

Data sheet

Wiring diagram

Schematic diagram

Certification

Power supply: 24 V ~; Consumption: 4 VA; Protection: IP 30.
Setting range: - From central unit: 0 ... 40 °C; - From local setpoint adjuster: ± 5 (± 15) °C.
On-Off output: Voltage-free contacts: rating 250 V ~, 5 (3) A.
– P control action; Proportional Band: ± 1 °C (adjustable from central unit).
Modulating outputs: Triac type 24 V ~, rating 300 mA (7W).
– PI control action; Proportional Band: ± 1 °C (adjustable from central unit).
– Control of actuators with run time: 100 seconds (adjustable from central unit).

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Room temperature controllers

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Room temperature controllers

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