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HL8002-MD Series Network Thermostat User Manual
HL8002-MD Series Network thermostats are available for individual room temperature control
in reside ntial, industrial an d busin ess premis es. Suita ble for 2-pip e F an Coil configur ation.
Network control is available (MODBUS).
HL8002-MD adopts digital control techn ology with large LCD display, It shows the follo wing
items: working states (cool, heat or ventilation), the speed of fan coil, room temperature, set-point.
There are following keys on the panel: On/Off “ ”, Exchange mode (cool, heat or ventilation) “ ”,
timer “
¥
”, Select fan speed (high, medium, low or auto) “ ”, set-point temperature “S” and “T”.
BASIC FEATURES STATUS DISPLAY
Room temperature setting
Manual or Auto 3-speed changeover
Defrost (low temperature protection)
Auto Restart (Option)
Clock, Sleep and Timer (Option)
IR remote control (Option)
Blue Backlight (Option)
RS485 Interface (MODBUS)
Working Status: Cool
, Heat , Ventilation
Fan Speeds: Low
, Medium
, High
and
Auto
Room temperature display
Temperature setting display
Clock week display
SPECIFICATIONS
Sensing element: NT C
Accuracy : ± 1℃
Set-point range: 5 to 35℃℃
Display range: 0～50℃
Operation environment: 0～45℃
Operating Humidity: 5 ～90%RH (non-condensing)
Power supply: AC 85～260V, 50/60Hz
Switch current rating: Resistive: 2A, Inductive: 1A
Rated Power: < 2 W
Wirings: Screw-in terminals, each terminal capable of
accepting
2 x 1.5 mm
2
or 1 x 2.5 mm
2
wires
Housing: ABS + PC Flame Retardant
Dimensions: 86 × 86 × 13 mm ( W × H × D )
Hole pitch: 60 mm ( Standard )
Protection Class: IP30
Display: LCD
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℃ cha nged once.
" Mode Selection: Press “ ” to change system working in cooling “ ”, heating “ ” or ventilation “ ” mode, the related
icon will flash, and it will be confirmed automatically after 5 seconds. The ventilation function is invalid for HL8002Y-MD.
" F an Spe ed Selecti on (H L8002DA-MD/DB-MD): Press “ ” to chan ge f an sp eed among “ (Hi)”, “ (Med)”, “
(Low)” or “
(Auto)”.
Under auto fan speed “ ”, the fan-speed will be changed automatically. Auto LOW-speed When the difference between
room-temperature and set-point exceed 1℃, Auto MED-speed When exceed 2℃, Auto HI-speed When exceed 3℃.
" Control Da mper (HL8 002Y-MD): The damper will be open when (1) room temperature is hig her than set-point in
cooling; (2) room temperature is lower than set-point in heating, Otherwise the damper will be closed.
" Control Motorize d Valve under 2-p ipe configurati on (HL8002DA-MD/DB-MD): If the differenc e bet ween ro om
temperature and set-point exceed 1℃, FCU valve will be open; if room temper ature and set-point are equal, HL 8002DA-MD
will close the FCU valve with the fan still running, HL8002DB-MD will close the FCU valve and Fan both.
MODEL DENOMINATIONS
HL8002 – –MD
T: Clock, Sleep and timing on/off. Blank is invalid.
R: IR remote function. Blank is invalid. (Remote controller should be ordered additionally)
L: Backlight available. Blank is invalid.
Y: Control damper to open or close.
DA: Co ntrol Motorized Va lve for 2- wire N.C. F CU va lve and 3-sp eed fan; W hen t he temperatur e reaches t he
set-point, it will close the Motorized Valve with the fan still running.
DB: Co ntrol Motorized Va lve for 2- wire N.C. F CU va lve and 3-sp eed fan; W hen t he temperatur e reaches t he
set-point, it will close both of the Motorized Valve and Fan.
E: Auto Restart. Blank is invalid.
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