PRODUCT CATALOGUE 2024 | alre.de

AIR CONDITIONING TECHNOLOGY

CLIMATE CONTROLLER ELECTRONIC WITH TRIAC OUTPUT (NOISELESS) SURFACE-MOUNTED ‘ULTRA-THIN’ INSTALLATION – DESIGN BERLIN 1000

TECHNICAL DATA

APPLICATION

Design:

Berlin 1000

This controller was specifically de- signed for heating / cooling regulation of 2-pipe systems used in hotels, homes and offices and can control up to 5 valve actuators (normally closed). The KTRTB’s internal sensor measures the room temperature and activates heating or cooling depending on the deviation from the configured setpoint temperature. As the switching element used is a triac rather than a relay or bimetal, the system operates without bothersome switching sounds. ECO function: if this function is select- ed, the temperature is adjusted down by 3 K in heating mode and up by 3 K in cooling mode.

Surface finish: Housing colour: Housing material:

glossy

pure white, similar to RAL 9010

ABS plastic 0 to 40 °C

Ambient temperature: Storage temperature: Permissible atmospheric humidity: Electrical connection:

−20 to +70 °C

max. 95% rel. humidity, non-condensing

screw-type terminals 0.5 mm² to 1.5 mm² surface / wall mounting (4-hole assembly on flush-mounted socket)

Mounting / attachment:

Protection rating: Safety and EMC:

IP30

according to DIN EN 60730

Max. power consumption:

< 0.8 W

Switching power: Switching element: Switching contact:

15 W

triac

NC contact NTC, internal

Sensor:

Control function: Control range:

heating or cooling

5 to 30 °C

Hysteresis:

0 K since control is practically continuous

Proportional range: General features:

approx. 1 K

ECO function; ‘heating / cooling’ display; ‘off with frost protection monitoring’ operating mode; mechanical range

restriction; scale: degrees Celsius; external setting

TYPE / IMAGE

ITEM NO.

FEATURES

CIRCUIT DIAGRAM

EURO / PG

KTRTB-211.108

Operating voltage: 230 VAC, 50 Hz Protection class: II, if properly mounted Max. switching current: 65 mA

MA700300

74.00 / I

Max. switching voltage: 230 VAC, 50 Hz Min. switching voltage: 230 VAC, 50 Hz Output signal: switching PWM (230 VAC, 50 Hz) ECO contact: 230 VAC, 50 Hz, optionally configurable as ECO or OFF function

KTRTB-211.108 / 03

MA700302

similar to KTRTB-211.108 but housing colour: traffic / studio white, similar to RAL9016

89.40 / I

KTRTB-251.108

Operating voltage: 24 VAC, 50 Hz Protection class: III, protective low voltage Max. switching current: 625 mA Max. switching voltage: 24 VAC, 50 Hz Min. switching voltage: 24 VAC, 50 Hz Output signal: switching PWM (24 VAC, 50 Hz) ECO contact: optionally configurable as ECO or OFF function

MA700400

55.50 / I

Accessories: suitable valve actuators ZBOOA

For accessories and dimension schematic see page 66.

121

Catalogue 2024

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

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