LCD DISPLAY & KEYS DESCRIPTION
ORDERING PART NUMBERS
PART NUMBERS | OPERATING VOLTAGES | APPLICATIONS | VALVE TYPE | ADDON FUNCTIONS |
TX986ML220-V2E | 85-240VAC | 2-PIPE | 0-10VDC | EXTERNAL SENSOR |
TX986ML220-V2K | 85-240VAC | 2-PIPE | 0-10VDC | HOTEL KEYCARD |
TX986ML024-V2E | 24VAC | 2-PIPE | 0-10VDC | EXTERNAL SENSOR |
TX986ML024-V2K | 24VAC | 2-PIPE | 0-10VDC | HOTEL KEYCARD |
ABBREVIATION
CASING/COVER COLOR | |
BLACK | B |
WHITE | W |
BACKLIGHT COLOR | |
Sky Blue backlight + Black letters(TN LCD) | SB |
Black backlight + White letters (VA LCD) | BW |
ON-OFF VALVE /COMPRESSOR CONTROL
The thermostat acquires the room temperature via its integrated sensor and maintains the set-point by simple on-off output
POWER ON OR OFF
Pressing the POWER button
INCREASE / DECREASE
In the ON state, press
HEAT/COOL/VENT
Pressing the MODE button
FAN OPERATION
The fan can be selected as manual or automatic 3-speed operation. In manual mode, the fan will be switched to the selected speed via control output Gh, Gm, Gl (by pressing the FAN button
TEMPERATURE DISPLAY
Both the room temperature and the set point are displayed
COMFORT MODE
In the comfort mode, the set point can be changed by pressing
KEY LOCK
The default status of “Key lock” is all keys available and it can be changed in ISU mode. Key lock function includes the following settings: All keys are available (Default) Mode button is locked out. The fan and Mode buttons are locked out. All buttons are locked.
ENERGY SAVING MODE
By pressing the MODE button
FREEZE PROTECTION MODE
Freeze protection can be disabled (default) or enabled via ISU mode. If freeze protection is enabled ( it is not available in the cooling only application) and the thermostat is in OFF mode while the room temperature is below 6 °C, the thermostat will open the heating device before the temperature rises to 8 °C
TIME SETTING
In ON/OFF states, press
TO SELECT MANUAL AND PROGRAMMABLE
In the thermostat ON status, Press
ADJUSTING OF WEEKLY PROGRAMMABLE
After selecting programmable mode, press
SETUP FUNCTION SETTINGS AND OPTIONS
NO | FUNCTION | SETTING AND OPTIONS | DEFAULT |
1 |
SYSTEM TYPE | 0 > Heat only 1 > Cool only 2 > Two pipes 1H1C manual(Default) | 2 |
2 | TEMPERATURE UNIT SETTING | 0 > ° F 1 > ° C | 1 |
3 | FAN CONTROL TYPE | 0 > AUTO ONLY 1 > CONSTANT ONLY 2 > BOTH(DEFAULT) | 2 |
4 |
KEY LOCK SETTING | 0 > ALL KEYS ARE AVAILABLE (DEFAULT IS 0 ) 1 > SYSYEM BUTTON IS LOCKED OUT 2 > ONLY RESERVED FOR OTHER MODEL SETTING 3 > ALL BUTTONS ARE LOCK OUT |
0 |
5 |
N/A | THIS ITEM IS NOT AVAILABLE(RESERVED FOR OTHER MODEL’S ISU MODE SETTING) | |
6 | FREEZE PROTECTION | 0 > DISABLED ; 1 > ENABLED | 0 |
7 |
DISPLAY TEMP. ADJUSTMENT |
-2 °C(-4°F); -1.5°C(-3°F) -1°C(-2°F) -0.5°C(-1°F) 0°C(0°F), 0.5°C(1°F) 1°C(2°F) 1.5°C(3°F) 2°C( 4°F ) |
0.0 °C (0°F) ) |
8 | REMOTE SETBACK HEATING MODE | RANGE 10-21°C ( RANGE 50-70°F ) | 18°C( 64°F) |
9 | REMOTE SETBACK COOLING MODE | RANGE 22-32°C (RANGE 72-90°F | 26°C( 79°F) |
10 | MODBUS ID DISPLAY SETTING | 0 > OFF(NO DISPLAY OF MODBUS ID) ; 1 > ON(DISPLAY) | 0 |
11 | P : ADJUSTMENT OF VALVE CONTROL | RANGE:1-10 FOR PROPORTIONAL OUTPUT ADJUSTMENT, IT SHOULD BE ADJUSTED BASES ON THE ACTUAL CONDITION | 4 |
12 |
I : ADJUSTMENT OF VALVE CONTROL | RANGE:1-60 INTEGRAL OUTPUT ADJUSTMENT, IT SHOULD BE ADJUSTED BASES ON THE ACTUAL CONDITION |
25 |
13 | SENSOR SELECTION | 0 > INTERNAL SENSOR(BUILT-IN) ; 1 > EXTERNAL SENSOR | 0 |
14 | BEE SOUND SETTING | 0 > ON ; 1 > OFF | 1 |
15 | PROGRAM SETTING | 0 > 5 WORKING DAYS A WEEK ; 1> 6 WORKING DAYS A WEEK ; 2 > 7 WORKING DAYS A WEEK; 3 > CLOSE THE PROGRAM SCHEDULE; PS: IF YOU SELECTED 7 WORKING DAYS A WEEK, THE WHOLE SCHEDULE IS THE SAME(ONLY 6 PERIODS), IF YOU 5 WORKING DAYS A WEEK, IT WILL HAVE 2 TYPES OF PERIODS FOR THE WEEK, WORKING DAYS 6 PERIODS, AND WEEKEND (HOLIDAYS) IS 2 PERIODS |
0 |
16 | MINI. OUTPUT ON/OFF TIME | 0-4 MINUTES, WHEN THE SETTING IS 1, WITH 1 MINUTE DELAY FOR BOTH ON OR OFF THE COMPRESSOR. | 3 |
17 | FAN STOP/RUN SETTINGS | 0 > FAN WILL BE SWITCHED TO LOW SPEED WHEN THE VALVE TURNS OFF 1> FAN WILL BE TURNED OFF WHEN THE VALVE TURNS OFF |
0 |
18 | ON / OFF BACK-LIGHT SETTING WHEN STANDBY | 0: OFF, THE BACK-LIGHT WILL BE OFF ALWAYS EVEN THE USER PRESSING ANY KEY 1: ON, THE BACK-LIGHT WILL BE ON FOR ABOUT 15 SECONDS IF ANY KEY PRESS |
0 |
19 | ON / OFF MEMORY SETTING | 0: OFF, USER SETTING WILL NOT KEEP WHEN POWER OFF (WHILE ELECTRIFIED, THE THERMOSTAT WILL BE OFF) 1: ON, USER SETTING WILL BE KEPT WHEN POWER OFF (WHILE ELECTRIFIED, THE THERMOSTAT WILL BE ON |
0 |
20 | BACK-LIGHT SETTINGS | 10-60 SECONDS(USER CAN ADJUST BACK-LIGHT TIME ACCORDINGLY TO ACTUAL DEMANDS) | 15 |
21 | VALVE OPEN VALUE SETTING | 0: OFF, THE VALVE OPEN VALUE WILL NOT BE DISPLAYED ON THE LCD 1: ON, THE VALVE OPEN VALUE WILL BE DISPLAY ON LCD (ONLY AVAILABLE FOR MODULATING TYPE THERMOSTAT |
0 |
22 | RESERVED FOR ADDITIONAL ISU SETTINGS | ||
23 | RESERVED FOR ADDITIONAL ISU SETTINGS | ||
24 | RESERVED FOR ADDITIONAL ISU SETTINGS | ||
25 | RESERVED FOR ADDITIONAL ISU SETTINGS | ||
26 | RESERVED FOR ADDITIONAL ISU SETTINGS |
TERMINAL POWER BOX
wiring is subject to change without notice based on addons
Install the thermostat about 5 feet(1.5m) above the floor in an area with good air circulation at average temperature. Do not install in locations where the thermostat can be affected by:
IF… | THEN… |
Heating system does not turn on | Set the mode to Heat by pressing the Mode button. Wait five minutes for the heating system to respond. |
Cooling system does not turn on | Set the mode to Cool by pressing the Mode button. Wait five minutes for the cooling system to respond. |
The fan doesn’t work | Check whether the Fan mode is set to Auto. Check whether the heating or cooling system works well or not. |
The Mode button does not work | Check whether the Keypad is locked or not(ISU setting code 4). Check whether the system is working in Energy saving mode. Check whether the thermostat is of. |
The Fan button does not work | Check whether the Keypad is locked or not(ISU setting code 4). Check whether the system is working in Energy saving mode. Check whether the thermostat is of. |
The Up or Down button does not work | Check whether the Keypad is locked or not(ISU setting code 4). Check whether the system is working in Energy saving mode. Check whether the thermostat is of. |
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