RET 230 HCW1 - Thermostat DANFOSS - Free user manual and instructions

Features	Details
Product type	Thermostat
Model	DANFOSS RET 230 HCW1
Temperature range	5°C to 30°C
Power supply	230V AC
Mounting type	Wall mounting
Display	LCD screen
Features	Programmable, eco mode, frost protection
Usage	Temperature control in heating systems
Maintenance	Regular check of electrical connections, screen cleaning
Safety	Overload protection, CE compliance
General information	2-year warranty, technical support available

Frequently Asked Questions - RET 230 HCW1 DANFOSS

How to set the temperature on the DANFOSS RET 230 HCW1 thermostat?

To set the temperature, press the 'OK' button, then use the arrows to increase or decrease the desired temperature. Press 'OK' again to confirm.

What to do if the thermostat does not turn on?

Check that the thermostat is properly powered. Make sure the batteries are installed correctly and are not depleted. If the problem persists, check the fuse or circuit breaker.

How to reset the thermostat?

To reset the thermostat, press and hold the reset button for about 5 seconds until the screen flashes. This will restore factory settings.

The thermostat shows an incorrect temperature, what to do?

Make sure the thermostat is installed at a sufficient distance from heat sources or drafts. You can also calibrate the thermostat by accessing the configuration settings.

How to change the thermostat battery?

To change the battery, remove the cover of the battery compartment located at the back of the thermostat. Replace the batteries with new ones respecting the polarity, then close the cover.

The thermostat does not respond to temperature settings, what to do?

Check if the thermostat is in 'energy saving' mode. If so, disable this mode to allow normal temperature adjustments. If the problem persists, try resetting the thermostat.

How to activate the programming mode on the thermostat?

To activate programming mode, press the 'Program' button and follow the on-screen instructions to set the desired heating schedules.

What to do if the thermostat makes noise?

A slight noise can be normal due to internal components. However, if the noise is loud or unusual, check if the thermostat is properly mounted and that there are no obstacles around.

The thermostat does not communicate with the heating system, what to do?

Check the connections between the thermostat and the heating system. Make sure the wires are properly connected. If everything seems in order, consult the manual for troubleshooting steps.

USER MANUAL RET 230 HCW1 DANFOSS

Electronic Heat / Cool thermostat with auto-changeover based on water temperature

Installation Instructions User Instructions

Installation Instructions 3-9
User Instructions 10

Installation Instructions

Please note

This product should only be installed by a suitably qualified electrician or heating installer. The installation must comply with local Building Regulations and wiring Regulations, including any competent person requirements that may exist

Specification

Thermostat features
Temperature range, heating 5-30°C
Water changeover temp - Cool to Heat - Heat to Cool	>30°C <16°C
Thermostat off/auto & fan on selector	●
Power supply 230 Vac ± 15%, 50/60Hz
Relay outputs, heat/cool & fan 2 x	SPST, 3(1)A, 10-230 Vac, Type 1B
Dimensions (mm) 110 wide x 90 high x 40 high
Design standard EN60730-2-9
Rated impulse voltage 2.5Kv
Ball hardness test 75°C
Control pollution situation Degree 2
Temperature accuracy ±1°C

Product overview

The thermostat is designed for use in systems equipped with fan coils served by a 2-pipe central changeover system. The thermostat controls the operation of a motorized valve which, during heating periods, opens when heat is required and which, during cooling periods, opens when cooling is required.

The changeover from heating to cooling is achieved automatically by measuring the temperature of the flow pipe. If the flow temperature exceeds 30^ the thermostat operates as a heating thermostat, if the flow temperature is less than 16^ the thermostat operates as a cooling thermostat

Important note: It is essential that the circuit in which the pipe sensor is located is not closed off and that water circulates past the sensor at all times. This may require the fitting of a bypass valve between system flow and return at the end of each circuit.

Installation

First remove the wallplate from the back of the unit.

• Ensure that there is a minimum of 50mm above the unit and 100mm below the unit in order to mount the plug-in module.

Fix at a height of approximately 1.5m from the floor, away from draughts or heat sources such a fan-coil outlets, sunlight or offi ce equipment.

Pipe sensor location

Fix the pipe sensor to the flow pipe using the clamping band supplied.

Important note: It is essential that the circuit in which the pipe sensor is located is not closed off and that water circulates past the sensor at all times when the system is in operation. This may require the fitting of a bypass valve between system flow and return to ensure circulation past the sensor.

Wiring

2-pipe fan coil application

Note:

If HEAT/COOL/FAN outputs are 230V, link terminals L-COM

Commissioning

Prior to re-fi tting the thermostat to the wallplate, the DIL switches on the rear of the unit must be set to the desired setting.

DIL Switch options, shown in factory set position.

DIL Switch descriptions

Switch 4: If set to On/Off, both heating and cooling operates in on/off mode. If set to Chrono, both heating and cooling operates in chrono-proportional mode.

Switch 3: Active only if switch 4 is set to Chrono. This switch determines the number of cycles per hour that the thermostat will impose on the system, the options are three 20 minute cycles or six 10 minute cycles.

Switch 2: Allows Celsius or Fahrenheit temperature scaling to be selected.

Switch 1: Not used in this model.

Mounting thermostat to the wallplate

To mount the thermostat to the wallplate, align the tabs on the top of the thermostat with the apertures in the wallplate and hinge the thermostat down, pressing firmly to engage the securing clip in the wallplate.

Locking & limiting

To lock or limit the setting range turn the setting dial to 3 and remove knob.
Position the locking springs on the rear of the dial to the desired position and re-mount the knob ensuring that number 3 on the dial aligns with the reference mark on the case.

Note: Should it be necessary to reset the microprocessor for any reason, a reset button is located beneath the setting dial. Use a non-metallic point, for example a matchstick, to depress the recessed button.

www.danfoss.com/BusinessAreas/Heating

This product complies with the following EC Directives:

Electro-Magnetic Compatibility Directive.

(EMC) (89\336\EEC), (92\31\EEC)

Low Voltage Directive.

(LVD) (73\23\EEC), (93\68\EEC)

CE