Digital Room Thermostat

HL2023 Series

General

The HL2023 series thermostats are stand-alone microprocessor based thermostats with LCD display. The thermostats are designed to on/off control

the fans, valves, dampers or electric heaters in fan coil units and heating applications.

Models are available for heating/cooling/ventilating control of 2-pipe or 4-pipe fan coil units.

The fan speed can be manually controlled by the fan speed control push button.

It is wired to run high/medium/low speed continuously or to automatically change the fan speed.

The thermostats provide RS-485 communicating interface and MODBUS protocol for system integration. The thermostats can be controlled by local

manually, master controller or operating by the BAS.

Features

● Attractive modern styling makes this thermostat

● ideal for locating in the occupied space

● Digital LCD display room temperature and set point

● Adjustable heating/cooling/ventilating mode control

● Adjustable manual 3-speed or automatic fan speed control and on/off control output for valves

● Infrared remote control available(Optional)

● Backlight function available(Optional)

● RS-485 communication interface and MODBUS protocol for system integration.(Optional)

● Thermostat mounted directly onto a wall or standard junction box

● Model available for85-260Vac power input also

● Reliable DC power supply by transformer 

● Reliable output by relays

Functions

● Cool, Heat and Vent.

● Room Temperature Setting

● Detect and Display Room Temperature

● Low Temperature Protection

● Backlight function available(optional)

● Manual/Auto Fan Speed Changeover 

● Remote Control (Optional)

Specifications

Power Supply: 85-260Vac, 50/60Hz

Setpoint Range: 5～35℃

Setting Unit: 1℃/step

Accuracy: ±1℃

Display: 53×36mm LCD display

System Adjust: 5 push-button for Power, Mode, Fan speed, Up and Down

Mode Setting: Heating, Cooling and Ventilating

Fan Speed Adjust: High, Medium, Low and Automatic fan speed control

Cycling Fan Control: Fan cycled running with thermostat

Control Performance: ON/OFF control

Differential: 1℃

Thermostat Output: SPST relay for 2-pipe configuration

                                2 SPST relay for 4-pipe configuration

Switch current rating: Resistive: 2A/4A, Inductive: 1A/2A

Temperature Sensor: NTC Thermistor 100K

Enclosure: Fire retardant PC ABS

Minimum Operational Life: Thermostat contacts: 100,000 cycles

Remote Controller(optional): Infrared Remote Control

Backlight Function(optional) : Blue light

Dimensions: 86×86×13mm (W×H×D)

Hole Pitch: 60 mm

Environmental requirements: Operating temperature range 0 ~ 40℃,

                                               Humidity range 5 ~ 95 %RH (non-condensing)

Mounting:

Embeded mounting, Electrical box size: 62×46×24.5mm(Normal);

                                                                48×48×25mm(European standard)

Wiring:

Screw-in terminals, each terminal capable of accepting

16 AW G, 18 AW G, 1.25mm2 or 0.75mm2 wires