One Basic configuration settings

When the controller is in standby mode, press and hold the "Settings" button for 5 seconds to emit a continuous beep sound for two seconds. Release the "Settings" button, and before the beep sound disappears, press the "Settings" button again to enter the basic settings interface. Continue pressing the "Settings" button to enter each setting item in order, with the serial number displayed on the left; After the last parameter is set, press the "Set" button again to save the above parameters and enter standby mode.

Press the "+" or "-" keys to modify specific parameter values.

1. Confirm and modify permissions and passwords

When "1" is displayed, enter the correct password. If the password is correct, you can enter the subsequent items to view and modify it; If the password is incorrect, entering the subsequent items can only view parameters (except for the password of the password lock), but cannot be modified. The original password is usually "0".

If you need to change your password, after entering the original password correctly, press the "timer" button, "2" will appear, and enter the new password; Press the 'Timer' button again, '3' will appear, enter the new password again. If the two inputs are consistent, the new password is valid.
The corresponding relationship between each function number and control function is shown in the table below.

Function Number	Basic Function Description	Function Number	Basic Function Description
1	Stage 1 fire, fuel, gas, water	5	2-stage fire, fuel gas vapor (electric contact pressure gauge)
2	2-stage fire, fuel gas, atmospheric pressure hot water 1 (with ignition temperature)	6	2 heating groups, electric steam (electric contact pressure gauge)
3	2-stage fire, fuel gas heat transfer oil (with ignition temperature)	7	2 heating groups, electric hot water
4	2-stage fire, fuel gas vapor (pressure controller)	8	2-stage fire, fuel gas, atmospheric pressure hot water 2 (with ignition temperature)

1、 Overview

YLZK-E1/EP1368 boiler computer controller is a new generation of oil and gas boiler computer controller developed by our company by absorbing advanced foreign technology, combining it with the actual needs and specific applications of domestic boiler control, and adopting modern computer control technology. Suitable for automatic control of fuel and gas boilers, electric heating boilers, steam boilers, pressurized hot water boilers, atmospheric hot water boilers, and thermal oil boilers, it has automatic control functions such as boiler water level control, boiler water temperature control, steam pressure control, extreme low water level alarm and interlock protection, steam pressure super high alarm and interlock protection. It has the advantages of high reliability, high degree of automation, convenient use, simple operation, rich functions, flexible control, beautiful appearance, complete variety, and high performance price ratio.

This manual contains descriptions of all supported control types for the YLZK-E1 series controller. Specific models of controllers may not necessarily have the functions described in this manual. Therefore, after reading this manual, it is also necessary to carefully read the "Quick Operation Guide" for the specific model controller.

2、 Install wiring

2.1 Installation method

① Make installation holes according to the "Outline and Hole Size Diagram", and thread the wires to be connected through the holes.

② Connect the required strong and weak wires to the corresponding terminals of the controller according to the "User Wiring Diagram".

③ Install the controller into the mounting hole.

④ If the controller needs maintenance, the terminals can be easily pulled out without dismantling the connected wires; When inserting the terminal into the controller, ensure that it is properly plugged in.

2.2 Input signals (possible input signals)

2.2.1 Wiring

Please use 0.3mm2 copper multi strand flexible wires for the wiring of input signals, and shielded cables should be used as much as possible. Please connect the shielding layer (copper mesh) of the shielded cable to the installation column and tighten it to the circuit board with screws.

2.2.2 Temperature Sensor

Using a thermistor (NTC) as a temperature sensor, with division marks of R (25 ℃)=100K and B (25 ℃/50 ℃)=3950K.

2.2.3 Pressure Sensor

The pressure sensor uses a pressure controller (pressure switch) and an electric contact pressure gauge. Please connect the normally closed contact of the pressure controller (which closes when the pressure is below the low setting value and opens when the pressure is above the high setting value) to the controller.

When the pressure sensor is a pressure transmitter, this controller supports input signals of 4-20mA, but instructions need to be provided when ordering. At this time, the dip switch of the corresponding channel on the circuit board should be adjusted to the current side (I1 side), and the range should be set.

2.2.4 Water level sensor

The water level sensor uses water level electrodes. Water level electrode is a sensor that uses the conductivity of water to measure water level. When the water level is higher than the electrode, the electrode forms a circuit between the water and the measuring cylinder shell; When the water level is below the electrode, there is no circuit between the electrode and the measuring cylinder shell. The controller obtains the water level status by detecting the signal.

The common terminal of the water level electrode must be connected to the shell of the measuring cylinder, and must not be connected to the boiler shell or stainless steel outer shell, let alone to the power neutral wire! Although this wiring can sometimes allow the controller to detect the water level, it can reduce the reliability and stability of water level detection, and may even burn out the input circuit of the controller.

Attention should be paid to keeping the insulation part of the water and electricity electrode clean. Scale or other dirt may reduce the insulation performance at both ends of the electrode, causing the controller to be unable to distinguish the water level (due to the reduced insulation performance, there is always a loop between the electrode and the common terminal, and the signal detected by the controller will always display water).

2.2.5 Furnace wall temperature switch

The furnace wall temperature switch should be fixed tightly against the boiler shell (inside the insulation layer). When the furnace wall temperature is higher than the set value, the temperature switch contact signal will be disconnected. This signal reflects whether the boiler water level is lower than the sensor installation position and whether there may be dry burning phenomenon. It can be used as a backup for extreme low water level protection, further improving the safety of boiler operation.

2.2.6 Burner fault signal

When the burner program controller detects abnormal gas pressure, abnormal blower pressure, flame interruption or non ignition, etc., it will immediately shut down for protection, lock the program controller, and output a 220V voltage signal on the burner fault light signal. After the controller detects the signal, it interlocks to shut down controlled equipment such as water pumps, displays alarm information on the screen, and emits sound and light alarms to prompt the stoker to handle it in a timely manner.

2.3 Control Output

2.3.1 Wiring

Please select copper multi strand flexible wires with appropriate cross-sectional area according to the power of the controlled electrical appliance for controlling the output line. Attention should be paid to the secure connection of the terminals, otherwise it may cause the terminals to heat up and burn out after being powered on.

Please separate the sensor weak current signal line from the conduit and avoid parallel wiring with the sensor weak current signal line during routing. When parallel wiring is necessary, please separate the two wire harnesses by 15cm or more to avoid excessive electromagnetic interference being introduced into the weak current system.

2.3.2 Burner Control

① The burner control output is at both ends of the normally open contacts of the relay, with no power output.

② The relay contact capacity is 10A/220VAC, and the load should not exceed 500W when in use.

③ The burner control output can be connected to the start stop control terminal of the burner, or it can be connected in series in the power circuit of the burner.

2.3.3 Heating group control

① The control output is at both ends of the normally open contacts of the relay, with no power output.

② The relay contact capacity is 10A/220VAC, and the load should not exceed 500W when in use.

③ Suitable power contactors and leakage protectors should be connected externally to drive the heating group.

2.3.4 Control of water pump (or makeup solenoid valve)

① The control output of the water pump is at both ends of the normally open contact of the relay, with no power output. It is usually connected in series in the power supply circuit of the water pump.

② The relay contact capacity is 10A/220V AC, and the load should not exceed 500W during use. It is recommended to connect a 20A fuse in series with the relay circuit for overload protection during wiring.

③ If the power of the water pump is greater than 500W or three-phase power supply is required, appropriate power contactors and thermal overload relays should be externally connected.

3、 Display

The large backlit LCD display configured on this machine has rich display functions, which can accurately and intuitively display the operating status of the controller as well as the collected temperature, pressure, water level and other states.

3.1 Controller operation status display

Display the current status of the controller in the upper right corner of the screen. When the controller is in standby mode, the position displays ""; When the controller is in operation (the burner starts working according to the temperature status of the boiler water), this position displays ""; When the controller is in an alarm state (interlock shutdown protection), the position displays ""; When the controller is in parameter setting state, this position displays "".

3.2 Water pump working status display

The water pump stops Pump operation Manual state of water pump

3.3 Burner status display

Burner stopped Burner Small Fire Burner Large Fire

3.4 Heating group display

3.5 Analog input display

TEMPERATURE DISPLAY Pressure display (pressure transmitter mode)

3.6 Pressure display

low pressure Medium voltage High voltage

3.7 Water level display

The boiler water level is lower than the boiler water level and higher than the boiler water level Water level sensing

Extreme low water level electrode, low electrode, low electrode, high electrode Device malfunction

When the boiler water level is below the limit low water level electrode, the word "lowest" flashes in the water level display.

When the water level sensor malfunctions, the highest display block corresponds to the status of the ultra-high electrode; The second highest display block corresponds to the state of the high electrode; The third display block corresponds to the status of the low-level electrode; The fourth display block corresponds to the state of the extreme low water level electrode. By observing the screen display, the faulty electrode can be quickly identified, making it convenient for users to troubleshoot.

3.8 Current Time Display

Generally, the display bar in the middle of the right side of the screen shows "current time". As shown in the following figure:

The current time display

3.9 Cumulative working time retrieval of burner

When not in the setting, alarm state, or manual operation of the water pump, press the "+" button. The display bar in the middle of the left side of the screen will show the cumulative working time of the burner and flash. After stopping the operation for a few seconds, the controller will automatically restore the original display.

3.10 Fault alarm display

Alarm code Alarm name

4、 Basic operations

4.1 Connect the 220V AC power supply, and the buzzer will emit a warning sound.

4.2 Press the "" key, the buzzer will sound once, the controller will turn on, and the LCD screen will display. At this time, the controller is in standby mode.

4.3 Keyboard

After the controller is turned on, the operator can enter the operating state (start furnace), exit the operating state (stop furnace), manually operate the water pump, set the time, and other operations through the keyboard. Usually, the stoker only needs to press the "" button to start the furnace and then press the "" button to stop it, which is very convenient.

4.4 In standby mode, press the "" key to enter the running mode, and the controller will start and stop the burner or heating group and the water pump and other equipment according to the start control.

4.5 In the running state, press the "" key to exit the running state, and the controller will turn off the burner or heating group and water pump.

4.6 Press the "" key in the power on state to turn off the display on the LCD screen and shut down the controller.

4.7 Manual operation of water pump

Manual operation can be performed through the "" and "" keys, please refer to the "Quick Operation Guide" for the corresponding furnace type.

5、 Parameter setting

Non time parameter settings can be made when the controller is in both running and standby states. Press the "" key to enter the setting state of the controller. In the set state, press the "" key to select the next parameter. When in the last parameter, press the "" key to exit the setting state of the controller, and the parameters set this time are saved. If you do not want to save the parameters set this time, you can press the "" key halfway to exit the setting state.

In the set state, press the "" or "" key to modify the selected parameters. If the value that needs to be adjusted is large, press and hold the "" or "" key, and the data will quickly increase or decrease until the key is released or the parameter reaches the limit value.

In standby mode, press and hold the "" key for 5 seconds to enter the time period and time setting state. When setting the first time period, display "", when setting the "start time", display "", and when setting the "stop time", display "". The time display window shows the corresponding numerical value. Press the "" key again to set the next parameter, and so on for the remaining time periods. A total of 4 time periods can be set.

The time setting range is 0.00 to 23.59. The time period setting must be in the order from 0.00 to 23.59, and cannot be reversed or overlapped. For example, if the "start time" of the first period is set to "8.00", then all subsequent stop start times cannot be less than "8.00". The controller automatically checks and corrects the timing parameters based on this limitation.

The start and stop times of the time period can be the same, and the length of the time period is zero, which is an invalid time period. You can turn off unnecessary time periods by setting the same start stop time.

If all four time periods are set to "start time" equal to "stop time", the controller will perform unscheduled processing and start time throughout the day.

The current time is in 24-hour format. The local clock is equipped with a backup power supply, which can keep running after the external AC power is cut off.

Note: The real-time clock is optional according to customer requirements. If you need this function, please contact the company.

6、 Operation and Control

Please refer to the "Quick Operation Guide" for the corresponding specific model controller.

7、 Alarm and interlock protection

After the controller is turned on, it continuously checks the pressure sensor, water level sensor, temperature sensor, and its own circuit. If an alarm signal is detected, it immediately emits an audible and visual alarm and interlocks to shut down the burner (or heating group) and water pump. The controller automatically displays alarm information, and at the same time displays fault codes when the interlock shutdown occurs.

When an alarm is triggered, the internal buzzer of the controller emits an alarm sound. Press any key to turn off the alarm sound.

After entering the alarm state, the controller locks itself and will not automatically exit the alarm state even if the alarm signal disappears. After the operator eliminates the alarm, press the "" key to reset the controller.

8、 Exception handling and troubleshooting.

8.1 No display when powered on

After the controller is powered on, it emits a prompt sound. If there is no prompt sound, please use a multimeter to check that there should be 220V AC voltage at the power input terminal, and the AC voltage at both ends of the self recovery fuse (FUSE1, C600 R150) above the power input terminal should be 0V. If both of the above are normal, please contact our customer service department.

If there is a prompt sound, please press the "" key, and the controller should turn on and display. If there is no power on display and no button prompt sound, please contact our company's user service department and explain this situation.

8.2 Water pump not working

Please observe the screen display to see if the water pump is in operation. If the water pump is not running on the screen, please observe whether the water level display is medium or high, whether the water pump is in manual mode, and whether the controller is in alarm mode, as the controller will not start the water pump in these states.

If the water pump is running on the screen, please use a multimeter to check if there is 220V AC voltage at both ends of the water pump control output terminal. If there is 220V AC voltage, please contact our company's user service department and explain the situation; If there is no 220V AC voltage, please check if the power supply circuit of the water pump is normal.

8.3 Burner (or heating group) does not work

Please observe the screen display to see if the burner (or heating group) is in operation. If the burner (or heating group) has no working display on the screen, please observe whether the pressure display is high pressure, whether the temperature is too high, and whether the controller is not in operation, because in these states, the controller will not start the burner (or heating group).

If there is a working display on the burner (or heating group) on the screen, please use a multimeter to check whether there is 220V AC voltage at both ends of the burner (or heating group) control output terminal. If there is 220V AC voltage, please contact our company's user service department and explain the situation; If there is no 220V AC voltage, please check whether the power supply circuit of the burner (or heating group) is normal or whether the burner itself is in a protective locking state.