HB403A-SRT91Y Electric Thermostat for FCU with AC motor
● On-site setting to set the temperature, temperature correction value, and timing switch time. On-site query: address, set temperature, temperature correction value.
● Suitable for two-pipe or four-pipe fan coil unit.
Features
This thermostat has the following functions:
● With intelligent temperature control function.
● Automatically store data and will not lose data due to power failure.
● On-site setting to set the temperature, temperature correction value, and timing switch time. On-site query: address, set temperature, temperature correction value.
● Suitable for two-pipe or four-pipe fan coil unit.
● It is suitable for two-wire and three-wire electric valves (solenoid valves), and four-pipe fan coil unit, it is only suitable for two-wire electric valves.
● Cooling/heating mode can be switched manually or automatically.
● Fan speed can be switched manually or automatically.
● Infrared remote control function.
● Real time function Note:
(1) When the main interface displays, it means the air conditioner is on, otherwise the air conditioner is off.
(2) When the main interface flashes, it means the communication is normal, otherwise the communication is interrupted.
Technical Parameter
|
No. |
Name |
Key Parameter |
|
1 |
Rated voltage |
AC110V -AC240V |
|
2 |
Frequency |
50Hz |
|
3 |
Power consumption |
1.5W |
|
4 |
Fan rated load |
4 A（2 A） |
|
5 |
Valve rated load |
2 A（1 A） |
|
6 |
Communication interface |
RS485 |
|
7 |
Baud rate |
9600bps |
|
8 |
Communication wire |
Twisted pair shielded wire, RVSP2*0.5 can be used |
|
9 |
Temperature control range |
16 ～30 ℃ |
|
10 |
Temperature precision rate |
±1 ℃ |
|
11 |
IP class |
IP30 |
|
12 |
Working environment |
0℃~50℃, less than 95%R.H. |
|
13 |
Storage environment |
-10℃~50℃, less than 95%R.H. |
MODEL DESCRIPTION
|
Model No. |
Communication interface |
Power Supply |
Fan Type |
Control Mode |
Remote Control |
Color of background |
||
|
SRT-80Y SRT-91Y |
RB |
RM |
0 |
3 |
A |
B |
R |
W |
|
RS485 interface/ Factory Protocol |
RS485 interface/ MODBUS |
AC220V |
3-speed fan |
2-pipe |
4-pipe |
Infrared remote control |
White |
|
Installation Instructions
● Be sure to cut off the power and wait at least 5 minutes before proceeding with the installation operation, otherwise it may cause electric shock or damage the system components.
● The installation location should be on the wall of the indoor air-conditioning room, about 1.5m away from the ground, where the air is circulating, so as to ensure that the thermostat can accurately measure and control the room temperature.
● The thermostat must be installed in a place without sunlight, in a dry place or away from cooking equipment and other heat sources.
● Working environment temperature: 0°C ~ 50°C, relative humidity: <85% (24°C).
● Since the back seat of the thermostat needs to occupy part of the space of the junction box, it is recommended to use a multi-strand sheathed flexible wire with a specification of RVV 6 x 0.75 for wiring.
● During engineering installation, it is strictly forbidden to connect more than two fan coil units in parallel.
