HaiLin Controls HL2023 Series User manual

HaiLin Controls
Beijing HaiLin Auto Controls Equipment Co., Ltd. Page 1 of 3 Tel: [phone]
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 ( ST).
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 mm2or 1 x 2.5mm2wires
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
M
ODEL 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.

HaiLin Controls
Beijing HaiLin Auto Controls Equipment Co., Ltd. Page 2 of 3 Tel: [phone]
International Information Industry Basement, HuilongguanNorth, Changping District, Beijing www.hailin.com
OPERATION
"On/Off: Press “ ” to turn on, press “ ” again to turn off thermostat and its output.
"Setting temperature: Press “T” to reduce set-point, press “S” to raise set-point, and 1 changed once.℃
"Mode Selection: Press “ ” to change system working in cooling “ ”, heating “ ” or ventilation “ ” mode, the
related icon will flash ( The ventilation function is invalid for HL2023Y/YE)
"Fan Speed Selection not for HL2023Y: Press “ ” to change fan speed among “ (Hi)”, “ (Med)”, “
(Low)” or “AUTO (Auto)”.
Under auto fan speed “AUTO”, the fan-speed will be changed automatically. Auto LOW-speed When the
difference between room-temperature and set-point is 1 ; Auto MED℃-speed When difference is 2℃; Auto Hi-speed
When difference is 3 .℃
"Control Motorized-Damper (HL2023Y/YE): Under cooling (heating) mode, The damper will be open when the
room temperature is 1℃higher than set-point in cooling, or room temperature is 1℃lower than set-point in heating,
Otherwise the damper will be closed.
"Control Motorized Valve under 2-pipe configuration (not for HL2023Y/YE): If the differential temperature between
room temperature and set-point exceed 1℃, FCU valve will be open; if room temperature and set-point are equal,
HL2023DA/DAE/DA2/DA2E will close the FCU valve with the fan still running, HL2023DB/DBE/DB2/DB2E will close both
of valve and Fan.
"Control FCU Valve under 4-pipe configuration (HL2023FCV2/FCV2E): In cooling, when the room temperature is
higher than set-point, the cooling Valve will be opened. Otherwise it will be closed. Heating valve is always closed. In
heating, When the room temperature is lower than set-point, the heating valve will be opened. Otherwise it will be closed.
Cooling valve is always closed.
Keyboard Lock Function
"Keypad Lock: its keypad would be automatically locked in 30 seconds in case that no one uses the thermostat, so
as to prohibit other persons from operating the thermostat.
"Keypad Unlock：Press“ ”for 5 seconds to unlock（In case that no one uses the thermostat, its keypad would be
automatically locked in 30 seconds）.
Low Temperature Protection Function
"Turn off: When the room temperature is lower than 5 , the thermostat would automatically turn on the fan and℃
valve with “ ” showing, When the room temperature reaches to 7 , the thermostat w℃ill automatically close the output.
Low Temperature Protection Setting
"Turn off the thermostat, press” ” and hold for 3 seconds, it will display “OF” or “ON”, press “▲” or “▼” key to
adjust. “OF” indicates low temperature protection invalid, “ON” indicates low temperature protection function valid. The
default is “OF”.
Temperature Adjustment
Temperature adjustment (±5 )℃can be done by following step:
"Turn off the thermostat, press” ” and “ ”hold for 3 seconds, it will display “XX ”℃（not displaying the thermostat
model）, press “▲”or “▼” to adjust the temperature value, it will be automatically confirmed after 6 second.

HaiLin Controls
Beijing HaiLin Auto Controls Equipment Co., Ltd. Page 3 of 3 Tel: [phone]
International Information Industry Basement, HuilongguanNorth, Changping District, Beijing www.hailin.com
Alarm
"Once the sensor fails, the thermostat will close the fan and valve, displaying “E1” or “E2”.
E1：Sensor in short circuit alarm
E2：Sensor in open circuit alarm。
It is displaying “HI” when the temperature is higher than 55 , displaying “LO” when the temperature is lower℃
than 0 .℃
WIRING DIAGRAMS
INSTALLATION
Note: Be sure to connect all the wires as per the wiring diagrams and keep it away from water,
mud and other material so as to prevent the unit being spoiled!
VC
VO
HL2023Y/YE
N
L
Damper
AC85～260V 50/60Hz
N L
Med
Low
HL2023DA/DAE/DB/DBE
L
N
Val
Fan
Valve
AC85～260V 50/60Hz
N L
Hi
Low
HL2023DA2/DA2E/DB2/DB2E
L
N
VO
Med Fan
Valve
VC
AC85～260V 50/60Hz
N L
Hi
Val2
Low
HL2023FCV2/FCV2E
L
Cooling
N
Med Fan
Val1
Heatin
g
AC85～260V 50/60Hz
N L
Hi
3.Remove the cables from
the control board
4 . As per wiring diagram,
connect it with terminals,
1.Put 3.5mm width
screwdriver into the slot.
2.Open the face
cover.
8. Press down the both
down sides to fix the
cover and finish the
installation
7. Firstly hang up the two
hooks with 30 degree
angle
6. Connect the cables on
the control board
5. Fix the installation
backboard with two
bolts on the wall.