AIR CONDITIONING TECHNOLOGY
ELECTRONIC CLIMATE CONTROLLER FOR COOLING CEILINGS, KTRRB SURFACE-MOUNTED INSTALLATION – DESIGN BERLIN 2000 – WITH INTERNAL AND EXTERNAL (OPTIONAL) TEMPERATURE SENSOR
TECHNICAL DATA
APPLICATION
Design:
Berlin 2000
Temperature controller for cooling ceil- ings / walls and all kinds of hot water heaters in 2 and 4-pipe systems for hotel, home and office spaces. As the KTRRB features dew point monitoring, it is highly suited for controlling ceiling cooling systems. The unit can control up to 5 valve actuators (24 V~ normally closed) per output. The types KTRRB-052.24x can be adapted to normally open actuators (24 V~, max. 5 pieces) with a jumper.
Surface finish: Housing colour: Housing material:
matt
pure white, similar to RAL 9010
ABS plastic 0 to 40 °C
Ambient temperature: Operating voltage: Storage temperature: Permissible atmospheric humidity: Electrical connection: Mounting / attachment:
24 VAC / 50 Hz, 24 VDC
−20 to +70 °C
max. 95% rel. humidity, non-condensing screw-type terminals surface / wall mounting
Protection rating: Protection class: Safety and EMC:
IP30
When using 0 – 10 V actuators: KTRVB- 052.24x.
III
according to DIN EN 60730
Max. switching current: Max. switching voltage: Min. switching voltage:
1 A
24 VAC / 50 Hz, 24 VDC 24 VAC / 50 Hz, 24 VDC
Switching power: Switching element: Switching contact:
24 W relay
NO contact
Output signal:
Switching, 24 VAC / 50 Hz, 24 VDC NTC internal, optional external, ‘Sensor 2’*
Sensor:
Hysteresis:
approx. 1 K
General features:
External dew point sensor connection; mechanical range limitation; external setting
TYPE / IMAGE
ITEM NO.
FEATURES
CIRCUIT DIAGRAM
EURO / PG
KTRRB-052.244
General features: ECO function; ‘heating / cooling / cooling interruption due to condensation / off’ display; ‘sensor rup- ture, sensor short-circuit, frost protection’ display; relative scale External flow sensor (H / C sensor): for automatic switching of the controller in heating or cooling mode depending on the inflow temperature (‘Sensor 2’). Alternatively, this input can be used as an H / C changeover contact Eco contact: upon closing the contact, the ECO function is actuated Forced switch-off contact: external switch-off function with frost protection function Control function: heating and / or cooling, cooling interruption upon condensation of the dew point sensor, frost protection function in the switched-off condition
DA420600
See Page 146
193.20 / I
Control function: 13 to 29 °C Setting range: −8 to +8 °C Neutral zone: approx. 2 K Pipe system compatibility: 2-pipe and 4-pipe
144
Catalogue 2023
Made with FlippingBook Annual report maker