Danfoss RET230 HC1 Electronic Heat Cool Thermostat with Auto Changeover Instruction Manual
- June 17, 2024
- Danfoss
Table of Contents
RET 230 HC-1 &
RET 230 HCA-1
Electronic Heat / Cool thermostat
with auto-changeover Installation Instructions
User Instructions
RET230 HC1 Electronic Heat Cool Thermostat with Auto Changeover
Please note
This product should only be installed be 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
Temperature range, cooling| 7-32°C at dead-band of 2K
9-34°C at dead-band of 4K
Selectable dead-band| 2 or 4K
Thermostat off/auto & fan on selector|
Power supply| 230 Vac ± 15%, 50/60Hz
Relay outputs, heat, cool & fan| 3 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 primarily designed for use in systems equipped with 4-pipe
fan-coil units. It may also be used in other heat / cool systems, including
split systems and air to air heat-pumps.
The thermostat controls room temperature by sequencing the operation of
heating and cooling. A selectable dead-band prevents overlap of heating and
cooling processes. For systems equipped with compressor derived cooling,
including heat-pumps, a selectable compressor delay timer is also included. If
used to control a heat-pump, the reversing valve can be energisation on either
a heat or cool demand.
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 office equipment.
Wiring
4-pipe fan coil application
Note:
If HEAT/COOL/FAN
outputs are
230V, link terminals
L – COM
Heat-pump application
Note:
If HEAT/COOL/FAN
outputs are
230V, link terminals
L – COM
Commissioning
Prior to re-fitting 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 (all switches in On position)
DIL Switch descriptions
Switch 8: If set to On/Off, both heating and cooling stages operate in
on/off mode. If set to Chrono, heating stage operates in chrono-proportional
modes, cooling continues in On/off mode.
Switch 7: Active only if switch 8 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 6: Allows Celsius or Fahrenheit temperature scaling to be
selected.
Switch 5: Enables or disables a compressor delay timer which is activated
at the end of each cooling call. This feature need only be used where cooling
is provided by a compressor as opposed to chilled water. Set to Cmp del if a
compressor delay is required, otherwise leave set to No Cmp del.
Switch 4: Active only if switch 5 is set to Cmp del. The options are 3 or
4 minutes.
Switch 3: Allows dead-band between heating and cooling to be set, options
are 2°C or 4°C.
Switch 2: Allows application to set as fan coil or as heat pump. If heat-
pump is selected, the output normally used to operate the heating valve is re-
assigned to the heat-pump reversing valve, the compressor stop/start signal
for both heat and cool calls is re-assigned to the relay normally used to
operate the cooling valve.
Switch 1: The function of this switch is dependent upon the setting of
switch 2:
- Switch 2 set to Fan-coil: Leave set to TS2
- Switch 2 set to Heat-pump: allows the reversing valve to be set up to be energised in heating mode (R+), or energised in cooling mode (R-)
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, pressin 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 match- stick 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), O3\68\EEC) ****Part No 39050 Issue 03 05/06 SW VER 2.1
Documents / Resources
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Danfoss RET230 HC1 Electronic Heat Cool Thermostat with Auto
Changeover
[pdf] Instruction Manual
RET230 HC1 Electronic Heat Cool Thermostat with Auto Changeover, RET230 HC1,
Electronic Heat Cool Thermostat with Auto Changeover, Cool Thermostat with
Auto Changeover, Thermostat with Auto Changeover, Auto Changeover
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