LEVTECH LSP-PC1-WIFI User manual

PUFFER CONTROL
WiFi VERSION
LSP-PC1-WIFI
User Manual

Levtech Service & Prodtuction SRL
Revision information
Rev.
Date
Changes
0
Aug. 1, 2022
First version
1
Feb. 13, 2023
- „Login to own network” step by step added
- „Email configuration” step by step added
- Info sign added i

Levtech Service & Prodtuction SRL
Short description
Features
Ÿ Temperature measurement with Pt1000
sensors
ŸHeat resistant silicon sensor cables
Ÿ Sound alarm
Ÿ Wall mountable case
Ÿ Configurable via Wifi
Ÿ E-mail notifications in case of failures
Ÿ Manually contrallable
Ÿ Algorithm preventing the pump from sticking
Ÿ Displaying of measured temperatures
T2 T1
Power ON
Pump ON
Error
PUFFER
TEMP
FIRE PLACE
TEMP
PUFFER CONTROL
The purpose of the LSP-PC1-WiFi controller is to
effectively control the heating of the puffer tank.
The controller has two temperature sensors and
controls a pump. Based on the temperatures
measured in the fire place and the puffer tank, as
well as the set parameters, it controls the pump
and assures the user that the system works
safely and efficiently. The controller is configured
using our smartphone or a laptop connected via
WiFi.

Levtech Service & Prodtuction SRL
Description
Button 1 - for turning
off the sound alarm
and for testing the
pump
5A fuse for the
pump
500mA fuse for the
power supply
Display
LED
indications
Pt1000 sensor from
the collector
Pt1000 sensor from
the water tank
Pump connection
(Max 4A/220V)
Power supply
150-240V AC
Button 2 - for
activating the
Wifi and for
resetting
Button 2
Button 1

Description
The Puffer Control controller is designed to control the efficient heating of
the puffer tank by controlling the pump on the closed water system of the
fireplace and the puffer tank and by measuring the exact temperature in them.
Compared to the previous version, the innovation is the configuration from the
smartphone and the possibility for the system to send a an alarm meassage
about possible errors. The device has two temperature measuring inputs. Both
sensors are Pt1000, one measures the temperature in the boiler and the other in
the water tank. The controller has one output that operates the circulation pump.
The input voltage is present on this output, which can be 150V - 240V AC.
Levtech Service & Prodtuction SRL
Display
By default, the temperature displayed on the display alternates between
the temperature of the fire place and the tank every 5 seconds, which can be
distinguished by the appearance of a dot.
In the case of an error, the active error code appears on the display, which is
detailed in the error indications chapter. (When connected to the device with a
phone or laptop, the error signals can be seen online, together with an
explanation.)
Button 1
The main function of the push button is to start the pump when pressed. As
long as the button is pressed, the pump is active, when it is released it turns off. It
can be operated at any time by pressing the button, regardless of operating
mode, it can also be used to test the operation of the pump.
Another function of the button is to stop the alarm. When pressed, the sound
signal stops, only the light signal remains.
Button 2
By long pressing button number 2, we can turn on WiFi on the device, if it
has been turned off under the network settings tab.
Also, with this button, we can reset the controller, the process can be found on
the "Restore factory settings" page.
Temperature of the
water tank
(Dot)
Temperature of the
collector
(No dot)

Levtech Service & Prodtuction SRL
The controller comes ready-to-use from the factory and provides safe control of the
given system immediately after connection. In addition, personalization is possible, which
can be carried out on the device through the Wifi connection of a smartphone or a laptop.
To access the settings, use your device to find the Puffer_control WiFi availability and
connect to it.
Password of the wifi: password
After a successful connection, by scanning the QR code on the device, the main
page of Puffer Control opens in our browser or we enter the following IP address in the
address bar of the browser (e.g.: Chrome/Google/Safari): 192.168.4.1
If the browser has successfully opened the main page, here we can see the main
data about the system, such as the current temperatures, the state of the pump, and from
here we can choose between the group of parameters to be modified. It is possible to
change the control (Setup) and network parameters (LAN Setup). *
Also, here is the firmware version (lower right corner) and the icon for the manual
(upper right corner).
Attention! Internet access is required when trying to access the manual.
Therefore, it is necessary to disconnect from the controller and provide Internet access.
Settings
* By default, the subtitles are displayed in English. The language can be changed by following the
steps described in the chapter „Changing the language”.
Fire place temperature
Puffer temperature
Pump

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Settings
Setup
Here we can change or set the parameters of the controller to the default position. You
must enter a password to enter.
Username: admin
Password: password
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Levtech Service & Prodtuction SRL
Settings
Start Temperature: specifies the minimum temperature value of the fire place from which
the control starts. The unit of measurement is degrees Celsius.
Differential Temperature: specifies how many degrees the water in the fire place must be
higher compared to the tank in order for the circulating pump to start. The unit of
measurement is degrees Celsius.
Motor Overrun Sec: we can set the pump running time after the temperatures have
equalized so that the hot water does not get stuck in the pipes. The unit is seconds.
Display Time Internal Temp Sec: the value measured by the two sensors alternates on the
display and with this parameter we can set how many seconds the temperature from the
puffer is displayed. At this value, a dot appears on the display. The unit is defined in
seconds.
Display Time External Temp Sec: the value measured by the two sensors alternates on
the display and with this parameter we can set how many seconds the temperature from the
fire place is displayed. The unit is defined in seconds.
Low Temperature: if the temperature in the system falls below this value, the controller
starts the pump to circulate the liquid to prevent freezing. This value must be determined in
such a way that there is no danger of freezing.
Low Temperature Hysteresis: this value determines by how many degrees the system
must warm back from the value specified in the Low temperature parameter, in order for the
danger of freezing error signal to disappear and the pump to stop.
Dangerously High Temperature: this is the value that, when the water tank temperature is
reached, the controller sounds an alarm and the Error LED lights up. Together with these,
the pump also comes into operation. Furthermore, if the email notification is set, the
controller will send the error signal to the specified address. Its unit is degrees Celsius.
Dangerously High Temperature Hysteresis: the Dangerously High Temperature and the
difference of this value gives the value where the sound signal stops, but the Error LED and
the pump work.
Overheating Temperature: if the temperature of the system has reached this value, the
Error LED will light up and the pump will start. The controller also sends a notification if the
notification sending function is activated.
Overheating Temperature Hysteresis: the value given by the Overheating Temperature
and its difference is the point below which, when the temperature of the fire place drops, the
controller stops the alarm and the pump.

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Settings
Default button: by clicking this, we can reset the control parameters separately to the
factory state. When you press it, the system will ask if you want to execute it for sure.
Load button: by pressing it, we can read the currently loaded parameters. After saving, we
can use this to test whether the changes have been saved.
Save button: with this button we can save the changed parameters. If we changed one of
the parameters, we have to press it so that the desired values are stored. After pressing it, a
window will pop up asking if you are sure you want to save the changes.
Logout button: we can use this to return to the home screen. After clicking on it, you will be
asked to confirm whether you really want to exit the settings and save the changes.
Furthermore, when pressed, the WiFi communication of the device will restart, after which it
is possible that we have to reload the page.
There is an info icon next to each text box, which helps you
understand the given parameter.
i

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Settings
LAN Settings
Here we can change or reset the network parameters of the controller. For easier
navigation, the menu is divided into 5 parts. You must enter a username and password to
log in.
Username: admin
Password: password
Wifi configurations
Here we can connect the controller to our own home Wi-Fi network, setting the appropriate
parameters. For this, we need to tick the Enable window.
We can search for our network with the Scan button, and then enter the password of our
network in the Wifi password field.
By checking DHCP, we can access the controller automatically, without entering the
following IP address and other datas.
Save with the Logout, then Save and Exit button so that the controller can function
properly. It is absolutely necessary to restart the Wi-Fi communication, which is
automatically performed by the controller.
Attention! Once the controller has been connected to our own network, it can only be
accessed via the Puffer_control wifi network at the address http://puffer.local.

Levtech Service & Prodtuction SRL
Settings
Access point configurations
Access Point Enable: with the help of this we can make the controller visible (checked) or
invisible (not checked) for other devices. If the device is currently invisible, you can use
Button 2 on the controller to display it in the list of Wi-Fi devices when searching.
AP SSID: here we can change the name of the device so that it appears in the list of
available devices when searching.
AP Password: we can change the connection password of our device.
IP Address: we can change the IP address of our device.
Attention!
Save the changes made here with the Logout, then Save and Exit button!
User configurations
With this menu item, we can change the username and password used to enter the two
menus on the main page, separately.

Levtech Service & Prodtuction SRL
Settings
Email configurations
Here we have the option to set the parameters for sending email notifications. If you simply
want to receive a notification, enter the email address where you want to receive the
notification in the Destination email address field. Then we need to check both boxes:
Default SMTP and Notifications enable. Finally, save your changes with the Save button
at the bottom of the page.
Other changes to this menu item are only necessary in special cases.
E-mail notifications only work if the device is connected to our internal network
based on the instructions described under the Login to own network page!
If you have set the email sending parameters correctly, you can check them with the Test
email button.
Nyelv
Default button: by clicking this, you can reset the language of the user interface and the
Network settings to default.
By default, the menu’s language is English (EN).

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Login to own network
Step 1
Find and connect to the Wi-Fi network of the
controller - Puffer_control
The password is: password
Step 2
Scan the QR code at the bottom of the
product or type the IP address "192.168.4.1"
into your browser (Chrome/Google/Safari).
Step 3
Enter the LAN Setup menu
Username: admin
Password: password
Step 4
Tick the Enable box.
Step 5
Click Scan.
Step 6
After the device find the available networks,
select your WiFi by clicking on the ssid box.
Step 7
When you selected your network, type in the
network’s password below.
Step 8
Scroll down to the bottom of the page and
click Logout button.
Step 9
Click on Save and exit button.
In order to be able to use the device's WiFi functions, like email notifications, modify the
settings or check the system’s status, you need to login the controller to your own WiFi
network. Let’s follow the steps below.

2
3
4
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Login to own network
Step 10
After Step 9 the controller will restart. Wait
until the screen shows the current
temperature again.
Step 11
From this moment, the controller is reachable
through your Wi-Fi network.
Connect to the same WiFi network with your
laptop/smartphone.
Pow er ON
Pump O N
Err or
PUFFER
TEMP
FIRE PLACE
TEMP
PUFFER CONTROL
Step 12
Open a browser and type in the searching
line: http://puffer.local/
Or scan the QR code from the bottom of the
device.
Email notification setup
You can use email notifications only after you have logged in to the network with the
controller. You can do this, if you follow the Login to own network’s steps.
Step 1
Enter the LAN Settings menu.
Username: admin
Password: password
http://puffer.local
1
Step 2
Find Email config page and enter your email
address to the Destination email address
box.
Step 3
Check in the Enable box to enable the email
notifications.
Step 4
You can make sure that notification function
is working, if you click on Test mail button.
Step 5
Save your changes with the Save button at
the bottom of the page.

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Changing the language
The controller menu is available in three languages:
ŸEnglish
ŸHungarian
ŸRomanian
By default, the menu is displayed in English and you can easily change it by following the
steps below.
Step 1
Find and connect to the Wi-Fi network of the
controller - Puffer_control
The password is: password
Step 2
Scan the QR code at the bottom of the
product or type the IP address "192.168.4.1"
into your browser (Chrome/Google/Safari).
Step 3
Enter the LAN Setup menu
Username: admin
Password: password
Step 4
You can select the language under the
Language menu item, which you can save
with the Save button. In the same place, we
can reset the language with the Default
button.
After making a change, if the language is not
updated, reload the page.

Levtech Service & Prodtuction SRL
Power ON
Pump ON
Error
PUFFER
TEMP
FIRE PLACE
TEMP
PUFFER CONTROL
Power ON
Pump ON
Error
PUFFER
TEMP
FIRE PLACE
TEMP
PUFFER CONTROL
Power ON
Pump ON
Error
PUFFER
TEMP
FIRE PLACE
TEMP
PUFFER CONTROL
1
3
2
If you want to restore the factory settings, you can easily do it by following the steps
below. After the reset, the parameters of the control and the network settings are also
reset to the factory values. You can find these values in the Default settings chapter.
The controller can be restored to its factory state by following these steps:
Factory reset
Step 1
Turn off the device. Simply unplug the power cord. Confirm that the device is not working
by checking the status of the Power ON LED. If it is not lit, the device has been properly
switched off.
Step 2
Press and hold the AP button (Button 2). While the button is pressed, reconnect the
device's plug to the mains socket.
Step 3
After connecting, keep the button pressed for 5 seconds. Then a zero flashes on the
display and a segment starts rotating on the display, as shown in the figure below. After
the flashing ends, the current temperature value is displayed. When you see this, you can
release the button. After that, the current temperature values will be read again on the
display, alternately.
Release the
button

Fire place temperature
Puffer temperature
Pump
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Alarms
If any sensor wire is broken, the buzzer will sound and the pump will start
until the controller receives a readable value from the sensor again. The sound
signal can be turned off by pressing Button 1 on the bottom of the controller. After
the beep stops, the pump continues to operate until the problem is resolved.
The display indicates which sensor has a problem and what the error is.
These can also appear in combination.
EO-- the sensor of the water tank is not connected (open loop)
ES-- the sensor of the water tank is shorted
E--O the sensor of the fire place is not connected (open loop)
E --S the sensor of the fire place is shorted
Sensor failure alarm
Overheat alarm (by default)
Once the fire place temperature exceeds the Over Temperature of
90°C, the Error LED will light up and the pump will start. They remain on until
the temperature drops below 87°C.
If the temperature exceeds the Dangerously High Temperature,
100°C, the light signal and the sound signal will be active in addition to the
pump operation.
The alarms are also displayed in detail if you are connected to the Wi-Fi
user interface of the controller.
If the email notification sending function is activated, the controller will
also send the error message to the specified email address.

Operation
Under normal conditions, the controller measures the temperature in the
fire place (T1) and the puffer tank (T2). If the temperature difference between the
fire place and the tank is greater than the preset value, the pump starts and runs
until the temperature in the fire place (T1) is less than T1+ half of the set value.
Example:
Temperature difference = 10 degrees (difference between T1 and T2)
T1 => reaches 60°C and T2 = 50°C
The controller starts the pump and runs it until T1 cools below 55°C (50 + (10 / 2)).
Normal mode
Antfreezing function
The controller starts the pump at the Low temperature value, thus
preventing freezing. If the temperature in the system exceeds the Low
Temperature + Low Temperature Hysteresis value, the controller will return to
normal operation. This operating mode does not need to be activated
separately, it takes effect automatically when the temperature drops.
Levtech Service & Prodtuction SRL
T2 T1
Pow er ON
Pump O N
Err or
PUFFER
TEMP
FIRE PLACE
TEMP
PUFFER CONTROL
Pump protection
If the pump has not been in operation for 8 days, the controller will start it and run it
for 3 minutes.

Dimensions
Levtech Service & Prodtuction SRL
67.57 mm
129.92 mm
92.84 mm
141.64 mm
36.79 mm

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Connectors
Pt1000 sensor
from the puffer
tank
Pt1000 sensor
from the fire
place
Pump
connector
(Max 4A/220V)
Power
supply150-
240V AC
By default, the two temperature sensors and the power cable are
connected to the controller. Before use, it is only necessary to connect the
motor wires properly. If the wires of one of the sensors need to be extended, it
is justified to dismantle, splice and reassemble them. The sensors can be
extended to a length of up to 300 m without affecting the accuracy of the
measurement.
The polarity of the Pt1000 sensors does not matter, their conductors are
interchangeable.
A 3-polarity connector is available for connecting the pump. This means that a
three-conductor pump can be connected using protective earth (G), neutral (N)
and phase (M).
The power supply is also connected based on the picture. Based on the image,
the phase (L) is at the bottom, neutral (N) is above it, and the protective ground
(G) is above it.