4 Pipe Fan Coil Unit Control AC220V Modbus RS485 Fan Speed Control Room Thermostat
1). Specification
Temperature setting range: 0~40℃
Temperature display range: 0~40℃
Fan speed: High, Medium, Low, Automatic
Temperature sensing: NTC thermostat (10K)
Relative humidity: 90%RH
Environment temperature: -10-50℃
Power voltage: AC AC230V±10% 50/60Hz
Electrical parameters: AC250V 3A
Power: <1.5W
Protect range:IP30
Size:86mm×86mm×15mm
2). Standard configuration
A,Fan coil unit and motorized valve control;
B,18 hours automatic timer;
C,Fan coil unit wind speed conversion--. High, Medium, Low, Automatic;
D,Backlight Color: Blue or green;
E,Built-in initial setting temperature is 25℃
F,Transfer function between Fahrenheit degree and Celsius degree;
G,Temperature range setting function: The lowest and the highest temperature are limited.
H,Networking function
3). Function
1.Can adjust freely during 0℃~40℃,and display the indoor temperature. The indoor temperature can also displayed even thermostat in power-off condition;
2.18 hours automatic timer power on/off;
3.4 regular Fan speed adjustment mode
4.Can connected to 2 wire or 3 wire motorized valve (2 way or 3 way) or air damper;
5.Cooling and heating mode;
6.Press “Heat/Cool” key and then “∧” key within 1S, you can set the ceiling temperature while heating, press “Heat/Cool” key and “ ∨ ” key within 1S, you can set the floor temperature while cooling.
7.Optional function: 1) Power-down memory function, If power-on again after accidental power-down, it can save the last working stat
4). Instruction
1. “Power” -Click this key, the thermostat is on. When press again, it is off.
2. “∨”and“∧” -Temperature setting key. Press “∨” once,the setting temperature would reduce and press “∧” once,the setting temperature rise 1℃.
3. “M” -The key for cooling/heating and timing. Press this key repeatedly, and it would transit from cooling/ heating. Press this key 3s, then Timer, Press the “∨” “∧”to set the time. Press “∨” key set time to 0 if you want to cancel the set time.
Heating
→Cooling
4. “FAN” -Wind Speed Key.
Press this key repeatedly and set auto, high, medium, low, auto condition. The fan state changes when press this key.
Under the heating/cooling condition, the operation mode of fan is as follows:
Auto→high→medium→low
5. When the power is off, press “M” key, and then press “∧”within 1S, it will setup to limit temperature of Heating.
6. When the power is off, press “M” key, and then press “∨”within 1S, it will setup to limit temperature of Cooling.
7.℃ and ℉ - When the power is off, press “M” key, and then press “Fan” within 1S, can be changed between ℃ and ℉.
Network control function
RS485 Interface Parameters:
Communication Way: Half-duplex communication Baud rate: 9600 bps
Communication Protection: Prevent lightning protection
Connection Thermostat sets: ≤64 sets (Single bus connection)
Network Cabling Way: parallel cabling way Terminal resistance: 120Ω
Communication distance: ≤500 meter
MODBUS Interface Protocol:
Adopting CRC16 Efficacy Yards
Packet format: Address- Feature code-Data quantity-No.1…No.n-CRC High efficacy
-CRC Low efficacy
Data bits, format: 1 Start bit+8 Data bit+1 Odd efficacy+1 stop bit
Address Range: 0~255 Data range: 0~255 Broadcast address: 0 Address
Functional Specification
In normal Internet connection, networking symbols will be displayed in the screen;
With the function of remote locking the thermostat keys, switching machine in local place is available;
5). Installation
1. If thermostat is matched with motorized ball valve, there need 7 wires: Live wire, neutral wire, valve open wire, valve off wire, and high, medium, low control for fan coil unit.
2. If only to control fan coil unit, there need 5 wires: Live wire, neutral wire, and high, medium, low control for fan coil unit.
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4 Pipe Fan Speed Control Digital Room Thermostat Coil Unit Control AC220V Modbus RS485 Fan Images
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