Belimo CRK24-B1, Technical Data Manual

Page: 7 / 20

www.belimo.eu
S4-CRK24-B1 • en • v1.2 • 06.2016 • subject to changes
7 / 20
Operation CRK24-B1
1
2
3
4
5
6
7
8
2 1
Mode switch and status display
Selection can be made between three operating modes:
• AUTO – optimum comfort mode
The room will be kept at comfort zone status insofar as the external
control signals permit this. All control functions are enabled.
• ECO – optimum energy mode
The room will be kept at pre-comfort status insofar as the external
control signals permit this. Reduced heating (–3 K) and elevated
cooling setpoints (+3 K) are in effect in this status. Starting from this
status, the room can be returned to comfort status within a short time.
Sequence control is enabled. The operating mode ECO is intended
for rooms not continuously occupied and/or for reduced requirements.
• MAX – Boost function
The room will be heated or cooled at maximum power, insofar as the
external control signals permit this.
The Boost function is switched off:
– Timer off
– Setpoint is reached
– Selection of a different mode (AUTO or ECO)
Measuring point terminals
Measuring points for all connection terminals (also during operation).
Internal function test
A comprehensive internal function test can be started with the mode
switch which makes it possible to check the controller, including
nominal voltage (AC 24V). The three LEDs (status display) are used
thereby to display the voltage level and the statuses.
Simulation control sequence
The rotary knob for the setpoint adjustment can be used to simulate
the connected actuators, and thus the heating and cooling control
sequences, independent of the room temperature.
ZTH EU / PC-Tool connection
The diagnostic socket 1 is used for PP communications with the
connected Belimo MFT actuator. Physical access to the valve actuator
can be dispensed with as a result.
Operating level 1 – Operation Operating mode / Setpoint
DIP switch for configuration
DIP switches 1 and 2
Basic setpoint setting W
H
(heating setpoint)
Potentiometer 15 … 36°C (Default 21°C)
Label for settings
Recording the settings used
(DIP switch and basic setpoint)
Operating level 2 – Configuration Application / Parameters
Operating level 3 – Service Test / Simulation
Rotary knob for setpoint adjustment
Potentiometer ±3 K
Mode switch
• MAX
• ECO
• AUTO
Status display
• MAX (red)
• ECO (orange)
• AUTO (green)
Order-Nr. Order-Nr.
CR24-B2xxxxx
W
H
U5/
2
U5/
1
1 2
ON
OFF
21
36
15
Measuring point
terminals
ZTH EU / PC-Tool connection
Internal function test
Basic setpoint setting DIP switch for configuration
Label for settings
1
2
3
4
5
6
7
8
Rotary knob for
simulation of control sequence
. .
. .
. .
. .
. .
. .
. .
.