HaiLin Controls
Beijing HaiLin Auto Controls Equipment Co., Ltd. Page 1 of 3 Tel: +86 10 52816666
International Information Industry Basement, HuilongguanNorth, Changping District, Beijing www.hailin.com
HL2023 Series Thermostat User Manual
HL2023 Series Touch Pad fan coil unit thermostats are designed to control the room
temperature in air-conditioning fan coil unit system or dust pipe channel system. HL2023
series thermostats with microprocessor and big LCD display. It shows the following items:
working status (cool, heat or ventilation), fan speed, room temperature, set-point
temperature etc. Keys include on/off (
),mode ( ),fan speed (
) and temperature
adjustment (
S
T
).
BASIC FEATURES
LCD Display
Room temperature setting
Manual or auto 3-speed changeover
Defrost (low temperature protection)
Blue back light ( -L, Optional )
Key lock ( Optional )
Auto-restart ( Optional )
Working Status: Cooling
, Heating or Ventilation
Fan Speed
（
Low
、
Med
、
High
or
AUTO
）
FCU valve status
Room temperature display
Temperature setting display
SPECIFICATIONS
Sensing element: NTC
Accuracy:
±
1
℃
Set-point range: 5 to 35
℃
℃
Display range: 0
～
55
℃
Operation environment: 0
～
45
℃
Operating Humidity: 5
～
90%RH
(non-condensing)
Key: soft touch
Power supply: AC 85
～
260V, 50/60Hz
Wirings: Accepting 2 × 1.5 mm
2
or 1 x 2.5mm
2
wires
Switch current rating: Resistive: 2 A, Inductive: 1 A
Housing: PC + ABS Fire Retardant
Dimensions: 90
×
88
×
15.5 mm ( W × H × D )
Hole pitch: 60 mm ( Standard )
Protection Class: IP30
Rated Power:
<
1W
MODEL DESCRIPTION
HL2023 -
L
：
blue backlit. Blank is invalid.
Y
：
Control damper to open or close
DA/DA2
：
DA: Control 2-wire valve; DA2: Control 3-wire valve,
When the temperature reaches the set-point, it will
close the valve with the fan still running.
DB/DB2: DB:Control 2-wire valve; DB2: Control 3-wire
valve ,When the temperature reaches the set-point,
it will close both the valve and fan.
FCV2
：
Control 4 pipe fan coil units, Control heating and
cooling valves and 3-speed fan, when the
temperature reaches the set-point, it will close the
valves with the fan still running
E
：
auto-restart (Restart the working status of
last 6 seconds before power off). Blank is
invalid.
