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Networked LCD Thermostat

Networked LCD Thermostat

  • Category:Thermostat
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  • Release time:2022-03-09 15:34:04
  • Product description

 Networked LCD Thermostat

PCC-FCU

Product description

PCC-FCU is suitable for industrial, commercial and home temperature control. By monitoring the room temperature and comparing the result of thesettemperature, it controls the working state of the fan coil and electric valve to adjust the indoor temperature to achieve comfort and energy saving.PCC-FCU microcomputer control technology, large-screen LCD display, LCD display status: working status (cooling, heating, ventilation), fan speed, indoor temperature, set temperature, etc. Keys are: power switch/wind speed adjustment key()、Mode converter()、Wind speed()And the temperature setting button()。


Features

●Stylish and classic appearance design

●Large LCD blue backlight display

●Can pass the room card (dry contact energy saving)

●External temperature sensor can be connected

●Power-off data protection function

●RS485 interface (BACnet MS/TP protocol)

●Built-in clock, timing on and off

●Key lock function to prevent others from arbitrary operation

●Low temperature protection function

●Standard 86 box installation

●Temperature sensor fault alarm function, easy maintenance


Technical indicators

●Temperature sensing element: NTC10K

●Temperature control accuracy: ±1℃

●Temperature setting: 5~35℃

●Display range: 0~50℃

●Working environment: 0~45℃

●Humidity: 5~95% RH (non-condensing)

●Button: touch the button

●Power: <1W

●Power supply voltage: AC85~260V, 50Hz

●Terminal: can connect 1.0mm²

●Load current: 3A (resistive negative number), 2A (inductive negative number)

● Shell: flame retardant PC engineering plastics

● Dimensions: 88.5x86x16mm (WxHxD)

●Installation hole distance: 60mm (standard)

●Protection level: IP30


Dimensions

Description: It is suitable for a four-pipe system to control the second-line cold/heat electric valve and the three-speed fan. When the set temperature is reached, the electric valve is closed and the fan continues to run. It can also be applied to the two-pipe system to control the second-line electric valve and the three-speed fan. When the set temperature is reached, the electric valve is closed and the fan continues to run.


Wiring diagram


Instructions for use

●switch machine:press and hold“”key for two seconds to power on; press and hold again“”Press the key for two seconds to shut down, and close the fan coil unit and electric valve at the same time.

●Set temperature: in switch state, press“”key to decrease the set temperature, press“”Press the key to increase the set temperature, and the set temperature changes by 0.5°C for each key.

●Mode selection: in the power-on state, press“”key to switch the working mode, LCD display“”Indicates cooling, shows“”Indicates heating, shows“”means ventilation。

●Fan speed selection: in the power-on state, press the "" key to select the fan speed(high)、(middle)、(Low)、(automatic)files。

●In the "auto mode", the wind speed is automatically shifted. That is, when the difference between the room temperature and the set temperature is 1°C, the low wind speed is automatically selected; when the room temperature is 2°C away from the set temperature, the medium wind speed is automatically selected; when the room temperature is 3°C away from the set temperature , the high wind speed is automatically selected.

●Cold and hot water valve control: in cooling mode

When the room temperature is 1°C higher than the set temperature, the cold water valve is opened; when the room temperature drops to 1°C lower than the set temperature, the cold water valve is closed, and the hot water valve is in cooling mode.

Always closed. In heating mode, when the room temperature is 1°C lower than the set temperature, the hot water valve opens, and when the room temperature rises to 1°C higher than the set temperature, the hot water valve closes; in heating mode, the cold water valve is always closed.


Energy saving mode

Eco mode: Press the "Eco" key to turn on the energy-saving mode. If the thermostat is in the cooling mode, the temperature is automatically set to 26°C, and the fan runs automatically; if the thermostat is in the heating mode, the temperature is automatically set to 18°C, and the fan runs automatically; when the energy-saving mode is on, press again Eco" key or press“”or“”key to exit energy saving mode. Room card energy-saving mode: The fan coil unit can be turned on and off through the hotel room card or biological probe.


Key lock function

Setting via remote computer


Low temperature protection function

The thermostat is turned off. When the indoor temperature is lower than 5°C, the thermostat will automatically turn on the heating and display the“”symbol, the fan automatically runs at high speed and opens the hot water electric valve; when the indoor temperature rises to 7°C, the thermostat automatically turns off the output.

Alarm: The sensor fails, the thermostat closes the fan and electric valve, and displays“”and "E1" or "E2". E1: Sensor short circuit alarm. E2: Sensor disconnection alarm. When the temperature is higher than 50℃, it will display "HI", and when the temperature is lower than 0℃, it will display "LO". Arrears notice: OFF.


Parameter settings

In the off state, press and hold the "M" key for 5 seconds to enter the display interface, press the "M" key again, see the following table for parameter selection, press“”,“”Adjust this parameter, after the setting is completed, you can see the modified parameter after restarting.

parameter item

parameter name

Factory default

parameter range

one

hour setting


 0-24

two

minute setting


  0-60  

three

week setting


Mon-Sun

Four

Eco cooling set temperature

26

25-27

five

Eco cooling set temperature

 18 

17-23

six

Set the timer power on function

0-1 

seven

Set timed power on hours


0-24

Eight

Set timer shutdown minutes


0-60 

Nine

Set timer shutdown function

0

0-1 

A

Set timer shutdown hours


0-24

B

Set timer shutdown minutes


 0-60

C

Floating point control is valid

0

0-1

D

Floating valve opening time

5S(unit)

 0-99  

E

temperature adjustment

0.5 (unit)

0-99


Installation diagram

1. Disassemble the main control board. Use a 3.5mm wide flat-head screwdriver to extend along the inclined plane to the depth of the card slot, and lift it up with a little force to open the panel.

2. Remove the cable

3. Correct wiring according to the wiring diagram

4. Use the two screws in the box to fix the connected thermostat bottom plate in the 86 bottom box.

5. Hang the hook on the top at a 30-degree angle, and press the bottom of the thermostat firmly until the upper case is stuck.


BACnetParameters Table

AV0

Current Temperature

AV6

 -

BV1

BO0

Fan high speed

AV1

set temperature

AV7

high wind time

BV2

water valve open

BO1

Fan medium speed

AV2 

high speed factor

AV8

stroke time

BV3

-

BO2

Fan low speed

AV3

Medium speed factor

AV9

low wind time

BV4

Remote setting enable bit

BO3

Hot water valve (open)

AV4

low speed factor

AV10

Bias setting

BV5

key enable bit

BO4

Cold water valve (close)

AV5

Coil coefficient

AV11

Remotely set temperature

BV6

Remote sensor enable bit



Warning: Please connect correctly according to the wiring diagram. Do not let water, mud and other sundries enter the thermostat, otherwise the thermostat will be damaged!


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