Room thermostat and actuator for controlling fan coil units

The CH130ARR2 unit is a kit consisting of a CH130AR2 thermostat and a CH176D actuator, which connected to each other via a two-pole cable, allow remote control of the two valves, the three-speed motor, or a 0 ..10V motor, of a fan coil unit (2- or 4-pipe fan-coil). The thermostat detects the room temperature and, by acting on the valves and the speed of the fan-coil motor, performs temperature control to achieve the best climatic comfort.

Components of the CH130ARR2 kit

CH130AR2 thermostat:

• Detects room temperature.
• Controls valves and motor speed of the fan coil unit
  
  

CH176D Actuator:

• Controls valves and fan-coil motors (3 speeds or 0-10V).
• Connected to the thermostat via a bipolar cable
  
  

Kit Operation.

• Heating and Cooling: The thermostat regulates room temperature by acting on valves and fan-coil motor speed.
• Valve control: Supports one or two valves for 2- or 4-pipe configurations.
• Motor speed: Compatible with 3-speed fan-coil motors or 0-10V signal.
• Energy efficiency: Automatic regulation avoids waste and improves comfort
  
  

Key Applications

• Residential heating and cooling: Ideal for homes and domestic environments.
• Fan-coil systems: Compatible with 2- or 4-pipe fan-coils.
• Precise control: Perfect for environments that require reliable temperature control
  
  

Standards and approvals

Complies with standards: EN 60730-2-9; EN 60730-1; ErP classification: ErP Class I; 1% (EU Reg. 811/2013 - 813/2013)

Operation

CH130ARR2 is powered by the actuator and can drive two valves and control a 3-speed fan coil motor or a 0-10V motor. The large display shows the measured temperature, fan speed, current program, and selected season. Settings and data are stored in a nonvolatile memory that retains them even in the absence of supply voltage or batteries (depending on model). The two-core, non-polarized cable that connects the thermostat to the module has the dual function of: thermostat power supply, communication bus between thermostat and actuation module. A single thermostat can be connected to multiple actuators, so that more than one fan coil unit can be controlled simultaneously with only two cables

Summer/Winter selection

To switch from winter operation (heating system) to summer operation (cooling system), and vice versa, press the key combination 1+2. The selected operation is indicated on the display by the WINTER or SUMMER icons.

Operation modes

• COMFORT with this mode of operation, the thermostat adjusts the operation of the heating or cooling system to maintain the same set comfort temperature at all times

• ECONOMY with this mode of operation, the thermostat adjusts the operation of the heating or cooling system to always maintain the same economy temperature setting

• OFF (OFF), is obtained by setting the ventilation speed to zero, in this case the thermostat does not make adjustment. The system shuts down completely, and OFF appears on the display.
  
  
  

Fan speed selection

• MANUAL: the fan speed is manually set to 3 levels (minimum, medium, maximum)

• AUTO: if set to AUTO, the thermostat will automatically set the appropriate speed according to the difference between the setpoint and room temperature

• The CH130AR2 thermostat has a TECHNICAL MENU to adapt it to different types of systems.
  
  

Technical menu by plant type

• 2-Pipe system: the thermostat only pilots the valve (ON/OFF type) dedicated to both heating and cooling, in fact the valve will manage both hot and cold water

• 4-Pipe system: the thermostat drives one valve (ON/OFF type) dedicated to heating and a second valve (ON/OFF type) dedicated to cooling according to the need of the room
  
  

CH130AR2 outdoor probe

• RESTORATION: Instead of the CH130AR2's internal probe to the thermostat, an external probe can be used to read the room temperature and perform temperature control. Typically this probe is placed under the fancoil where the air is drawn in.

• CHANGEOVER: the outdoor temperature probe can be placed on the fancoil discharge pipe of a 2-pipe system to make the automatic change between summer and winter operation

• WINDOW / MINIMUM THERMOSTAT CONTACT: when the contact is open the thermostat performs thermoregulation, when it is closed it does not perform thermoregulation

• WINDOW CONTACT / MINIMUM THERMOSTAT INVERTED: the window contact operates with logic reversed from what is defined in step 3

• NO OPERATION: the probe input is not operated by the thermostat
  
  
  

CH176D external probe

• ON/OFF

• manual change-over

• comfort/economy

• reduction (-3.0°C winter +3.0°C summer)

• recovery ( only if P12 different from 5 )

• minimum sensor winter only (see above)

• minimum sensor winter/summer (see above)

• automatic change-over
  
  
  

Technical Specifications CH130AR2

Standards and Directives

Technical Characteristics CH176D

Characteristics of Outputs

Characteristics of Inputs

Standards and Safety