Hailin HL8002-MD Network Room Thermostat
Introduction
HL8002-MD Series Network thermostats are available for individual room temperature control in residential, industrial, and business premises. Suitable for 2-pipe Fan Coil configuration. Network control is available (MODBUS). HL8002-MD adopts digital control technology with a large LCD display, It shows the following items: working states (cool, heat, or ventilation), the speed of the fan coil, room temperature, and set-point. There are the following keys on the panel: On/Off “
”, Exchange mode (cool, heat, or ventilation) “ M”, timer “
”, Select fan speed (high, medium, low, or auto) “ 
”, set-point temperature “
”.
MODEL DENOMINATIONS
BASIC FEATURES
- 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)
STATUS DISPLAY
- Working Status: Cool
, Heat
, Ventilation
- Fan Speeds: Low
, Medium
, High
and Auto
- Room temperature display
- Temperature setting display
- Clock week display
SPECIFICATIONS
- Sensing element: NTC
- 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 mm2 or 1 x 2.5 mm2 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 a thermostat and its output.
- Setting temperature: Press “
” to reduce the set-point, press “
” to raise the set-point, and 1℃ changed once. - Mode Selection: Press “ ” to change the 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.
- Fan Speed Selection (HL8002DA-MD/DB-MD): Press “ ” to change fan speed 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 exceeds 1℃, Auto MED-speed When exceeds 2℃, and Auto HI-speed When exceeds 3℃.
- Control Damper (HL8002Y-MD): The damper will be open when (1) the room temperature is higher than the set-point in cooling; (2) the room temperature is lower than the set-point in heating, Otherwise the damper will be closed.
- Control Motorized Valve under 2-pipe configuration (HL8002DA-MD/DB-MD): If the difference between room temperature and set-point exceed 1℃, FCU valve will be open; if room temperature and set-point are equal, HL8002DA-MD will close the FCU valve with the fan still running, HL8002DB-MD will close the FCU valve and Fan both.
CODE SETTING
Turn off the thermostat, simultaneously press “ M” and “” for three seconds till to display “XX ℃” (“RT” disappears), then press “ ”, “XX ℃” disappears automatically, temporality, press “
” to number them and the system will automatically confirm the codes set (The codes range from 1 to 32).
FUNCTIONS ASSOCIATED WITH TIMER ARE IN THE FOLLOWING (-T )
- Clock calibration: Press “” till to display “hh:mm” and “mm” flash, press “” to adjust minute, press “”, “hh” flash, press “” to adjust hour;
- Press “”, “week” flash, press “” to adjust Mon to Sun.
- Sleep function setting: Press “”, till to display “
” and flash, press “” to confirm, and press “” to cancel. - Timer on /Timer off: Press “” till to display “” and “TIMER ON” and all-flash, and also “mm” flash, press “” to adjust minute, press “”, “hh” flash, press” to adjust hour; Press “” till to display “” and “TIMER OFF” and all-flash, and also “mm” flash, press “” to adjust minute, press “”, “hh” flash, press “” to adjust the hour.
- Canceling timer on / Canceling timer off: Press “” till to display “” and “TIMER ON” and all-flash, and also “mm” flash, press “” to adjust minute to “”. press “”, “hh” flash, press “” to adjust hour to “00” ; Press “” till to display “” and “TIMER OFF” and all-flash, and also “mm” flash, press “” to adjust minute to “00”. press “”, “hh” flash, press “” to adjust the hour to “00”.
AUTO RESTART (Option)
- When the thermostat is at ON status for one minute, if the power is cut, it will return back to running automatically with the status how it is one minute ago after power came back.
- When the thermostat is at OFF status for one minute, if the power is cut, it will keep OFF status after power comes back.
DEFROST (LOW TEMPERATURE PROTECTION)
- Description: When the thermostat turns off and the room temperature is lower than 5℃, it will be turned on automatically in heating mode with “ ” showing, under HL8002DA-MD/DB-MD models, the system will be in heat mode and fan runs in high speed. Under the HL8002Y-MD model, the motorized damper will be open. The thermostat will turn off when the room temperature is higher than 7℃.
- Set low-temperature protection: Turn off the thermostat, press “ ” and hold for 3 seconds, it will display “00” or “01”, press “” key to adjust. “00” indicates low-temperature protection invalid, and “01” indicates low-temperature protection function valid. The default is “00”.
ALARM
When Communication doesn’t work normally, the screen will display “ ”.
WIRING DIAGRAMS
MOUNTING
REFERENCE:
DOWNLOAD MANUALS:
Hailin HL8002-MD Network Room Thermostat User Manual