PRODUCT CATALOGUE 2024 | alre.de

AIR CONDITIONING TECHNOLOGY

ELECTRONIC CLIMATE CONTROLLER WITH TIMER KTRRUU – 230 VAC FLUSH-MOUNTED INSTALLATION – DESIGN BERLIN FLUSH-MOUNTED

TECHNICAL DATA

APPLICATION

Design:

Berlin flush-mounted PC, PMMA, ABS plastic

Flush-mounted controller with timer function for heating / cooling regulation of 2 and 4-pipe systems used in hotels, homes and offices. The adaptation takes place in a menu. The unit can control up to 5 valve actuators (normally open or normally closed) per out- put. In 2-pipe operation, the operating mode can be changed via an external changeover contact or temperature sensor. The clock can serve as a master for other controllers for switching to ECO mode. It is possible to activate the energy saving (ECO) or frost protection (OFF) functions via an external contact. Alternatively, the con- troller’s inputs can be configured to connect with an external temperature sensor or dew point sensor (TPS). A 0–10 V interface can be used to control the speed of a fan (EC fan) . General: digital surface switch single-room climate controller with timer; optional external dew point sensor; ECO function, ECO value adjustable; ‘ECO’ display; ‘on / off’ display; ‘heating’ display; ‘cooling’ display; ‘cooling interruption due to condensation’; digital actual value display; backlighting; operating mode ‘off with frost protection monitoring’; child-safe features; facilities; power-reserve (3 days); actual value correction / measured value correction; learning function; emergency op- erating mode; holiday setting; party setting; automatic adjustment to summer / winter time; external setting; comfortable operation using touch-sensitive buttons with dynamic button assignment. Special colours such as anthracite and aluminium are available depending on the project.

Housing material:

Ambient temperature: Storage temperature: Permissible atmospheric humidity:

0 to 40 °C

−20 to +70 °C

max. 95% rel. humidity, non-condensing

Protection rating: Safety and EMC:

IP30

according to DIN EN 60730

Max. power consumption: Max. switching current:

approx. 1 W (2.2 VA)

3 (0.5) A each

Switching element: Switching contact:

2 relays

2 NO contacts

Output signal:

Switching, analogue 0 to 10 V max. 5 mA for activating an rpm-controlled fan NTC internal, optional external ‘Sensor 2’* For automatic switching of the controller to heating or cooling mode depending on the inflow temperature (‘Sensor 2’); alternatively, this input can be used as an H / C changeover contact upon closing the contact, the ECO function is actuated

Sensor:

External flow sensor (H / C sensor):

ECO contact:

Control range: Setting range:

5 to 40 °C

standard setting range for heating (5 to 30 °C), second setting range for cooling (18 to 40 °C)

Hysteresis: Neutral zone: Display type:

approx. 1 K adjustable

illuminated graphical display

Pipe system compatibility:

2-pipe and 4-pipe

TYPE / IMAGE

ITEM NO.

FEATURES

CIRCUIT DIAGRAM

EURO / PG

KTRRUu 217.456#21 (230 VAC)

Surface finish: glossy Housing colour: pure white, similar to RAL 9010 Operating voltage: 230 VAC, 50 Hz Electrical connection: pluggable screw-type terminals, voltage supply side 0.75 – 2.5 mm², low-voltage side 0.08–1.5 mm² Mounting / Attachment: in flush-mounted socket – adaptable with 50 x 50 mm cover in almost all surface switch ranges (deep flush-mounted socket recommended) Protection class: II Max. switching voltage: 230 VAC, 50 Hz Min. switching voltage: 230 VAC, 50 Hz Switching power: 690 W Output signal: switching heating, cooling, heat- ing / cooling, ECO, OFF, 230 VAC, 50 Hz; analogue 0–10 V (5 mA) for activating an rpm-controlled fan Scope of delivery: controller, 50 x 50 mm cover, pure white (similar to RAL 9010), glossy, alre frame ‘Berlin’

UA220000

275.20 / I

* A menu setting can be used to select whether control should be based on the internal or external sensor. In the intermediate positions, if both sensors are used, a weighting is applied to the internal room sensor and the external radiation sensor. The weighting allows for compensation of different structural conditions such as large window areas or cardinal directions. For very slow controlled systems, it is recommended to assign a higher weighting to the radiation sensor than to the internal room sensor.

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Catalogue 2024

Prices valid from 01.01.2024 - 31.12.2024, prices may be subject to change | V1

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