Tech Controllers EU-880 zPlD User manual

EU-880 zPID

EU-880 zPID
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EU DECLARATION OF CONFORMITY
Hereby, we declare under our sole responsibility that EU-880 zPID manufactured by
TECH STEROWNIKI, head-quartered in Wieprz Biała Droga 31, 34-122 Wieprz, is compliant
with Directive 2014/35/EU of the European Parliament and of the Council of 26 February
2014 on the harmonisation of the laws of Member States relating to the making available on
the market of electrical equipment designed for use within certain voltage limits (EU OJ L
96, of 29.03.2014, p. 357), Directive 2014/30/EU of the European Parliament and of the
Council of 26 February 2014 on the harmonisation of the laws of Member States relating to
electromagnetic compatibility (EU OJ L 96 of 29.03.2014, p.79), Directive 2009/125/EC
establishing a framework for the setting of ecodesign requirements for energy-related
products as well as the regulation by the MINISTRY OF ENTREPRENEURSHIP AND
TECHNOLOGY of 24 June 2019 amending the regulation concerning the essential
requirements as regards the restriction of the use of certain hazardous substances in electrical
and electronic equipment, implementing provisions of Directive (EU) 2017/2102 of the
European Parliament and of the Council of 15 November 2017 amending Directive
2011/65/EU on the restriction of the use of certain hazardous substances in electrical and
electronic equipment (OJ L 305, 21.11.2017, p. 8).
For compliance assessment, harmonized standards were used:
PN-EN IEC 60730-2-9:2019-06, PN-EN 60730-1:2016-10.
Wieprz, 06.07.2022

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I. Safety
Before using the device for the first time the user should read the following regulations carefully. Not
obeying the rules included in this manual may lead to personal injuries or controller damage. The user’s
manual should be stored in a safe place for further reference. In order to avoid accidents and errors it
should be ensured that every person using the device has familiarized themselves with the principle of
operation as well as security functions of the controller. If the device is to be sold or put in a different
place, make sure that the user’s manual is there with the device so that any potential user has access to
essential information about the device.
The manufacturer does not accept responsibility for any injuries or damage resulting from negligence;
therefore, users are obliged to take the necessary safety measures listed in this manual to protect their
lives and property.
WARNING
•High voltage! Make sure the regulator is disconnected from the mains before performing
any activities involving the power supply (plugging cables, installing the device etc.)
•The device should be installed by a qualified electrician.
•Before starting the controller, the user shoud measure earthing resistance of the electric
motors as well as the insulation resistance of the cables.
•The regulator should not be operated by children.
WARNING
•The device may be damaged if struck by a lightning. Make sure the plug is disconnected
from the power supply during storm.
•Any use other than specified by the manufacturer is forbidden.
•Before and during the heating season, the controller should be checked for condition of
its cables. The user should also check if the controller is properly mounted and clean it if
dusty or dirty.
We are committed to protecting the environment. Manufacturing electronic devices
imposes an obligation of providing for environmentally safe disposal of used
electronic components and devices. Hence, we have been entered into a register
kept by the Inspection For Environmental Protection. The crossed-out bin symbol
on a product means that the product may not be disposed of to household waste
containers. Recycling of wastes helps to protect the environment. The user is
obliged to transfer their used equipment to a collection point where all electric and
electronic components will be recycled.
!
!

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II. Description
The EU-880zPID temperature controller is designed for use with central heating boilers. It controls the
following units: central heating (CH) water circuit pump, domestic hot water (DHW) pump, circulating or
valve pump, mixing valve and fan. Optionally, control functions can be also provided for two additional
mixing valves via ST-61 modules.
The ST-880zPID controller is a unit with a continuous output signal using a modified PID control
algorithm. In this type of controller the blowing power is calculated by measuring the boiler temperature
and the flue gas temperature as measured at the outlet of the boiler. The fan is run continuously and the
blowing power depends directly on the measured temperature of the boiler, the flue gas temperature and
the difference between these parameters and their set-points. The advantages of a modified PID
controller include the ability to maintain a stable set-point temperature without any unnecessary
overshoot or oscillations.
When using this type of controller equipped with a flue gas outlet sensor fuel savings can be
achieved from a few percent up to around 15 percent with the output water temperature kept at a very
stable label, resulting in longer life of the exchanger (boiler). As the flue gas temperature at the boiler
outlet is controlled this results in low emissions of dust and gases that are harmful to the environment.
The thermal energy of the flue gas is not wasted and released into the chimney, but is instead used for
heating.
Below we present the results of tests conducted with the use of the Tech controller with PID control:

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and the same controller without PID control:
II.a) Basic concepts
Lighting - cycle that lasts until the flue gas temperature reaches a specific value, provided that it does
not drop below this value for 4 minuts (factory setting for lighting time).
Operation – after the lighting procedure is completed the controller will go into operating cycle mode
and the display will show the message: ”PID:OPERATION”. This is the main operating status of the
controller in which the blower function is run automatically and fuel is supplied automatically based on
the PID algorithm oscillating around the user’s set-point temperature. If the temperature suddenly rises
by more than 5°C above its set-point value so-called monitoring mode is activated.
Monitoring mode - this mode will start automatically if during any time that the controller is in operating
cycle mode the temperature rises by more than 5°C above its set-point value. If this happens in order to
lower the circulating water temperature the controller will switch over from PID control to manual settings
(as per parameters set in the Installation menu>>Monitoring mode) and the display will show the
message: "PID:MONITORING".
Shutting off - if the flue gas temperature drops below a specified value and does not rise above this
value for 10 minuts (factory setting for shutting off time), the controller will go into shut off mode. In
this mode the blower and feeder will stop running and the display will show the message: "SHUT OFF".
If there is power failure the thermoregulator will stop working.
When power is restored the controller will resume operation at its pre-set parameters restored from its
built-in memory. No saved thermoregulator parameters are lost when there is power failure.

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III. Controller functions
This chapter describes the functions of the controller, how to change its settings and navigate its menus
III.a) Main page
During normal operation of the controller the graphic display shows the main page. Depending
on the operating mode its corresponding main screen is displayed (see Section II.C).
To move to the first level menu press the pulser knob. The display shows the first four menu
options. To access more options turn the knob. To select a function, press the knob. To change parameters
follow the same procedure. For your changes to be entered it is necessary to confirm them by pressing
the pulser at CONFIRM. If you do not want to make any changes within a given function press the pulser
at CANCEL. To exit the menu use the EXIT key.
If necessary, you can use the standby mode button located on the controller housing to rapidly
turn off all actuators. This is an additional safeguard feature for use in an emergency situation that allows
you to power down all controller actuators (fan, pump, valve).
NOTE: Power is not disconnected from the controller when it is in standby mode.
III.b) Lighting / Blowing
With this function you can easily light the boiler. After you light an initial area an automatic lighting
cycle will be activated. With the PID function ensuring the selection of optimal parameters the boiler will
smoothly enter its operating mode.
III.c) Screen view
You can use this function to select one of four thermoregulator
operation main screens:
•CH screen (displays the current
mode of operation of the boiler),
•main valve (displays the operating
parameters of the main valve),
•valve 1 (displays the operating pa-
rameters of additional valve 1)
•valve 2 (displays the operating pa-
rameters of additional valve 2)
•service screen –this view is not ac-
cessible to the user. It is a special screen view for use only by the
manufacturer.
The screen view can be also changed directly from the home page by
pressing EXIT.

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NOTE: To enable the views showing valve parameters the respective valves must be pre-installed and
configured properly by a installation fitter.
III.d) Set-point CH temperature
This option is used to adjust the
set-point temperature of the boiler. You
can change the boiler temperature within
an adjustable temperature range of 45OC
to 85OC. The central heating set-point can
be also changed directly from the
controller main screen by turning the
pulser knob.
III.e) Set-point DHW temperature
This function allows you to set your
required set-point temperature for
domestic hot water. You can adjust this
temperature within a range from 30OC to
60OC.
III.f) Type of fuel
This option is used choose one of three
types of fuel (coal, fines or wood) for
burning in the boiler. For each type of fuel
chosen a suitable operation mode for the
fan is selected to match the actual process
of combustion in the boiler.
III.g) Manual operation
For your convenience the controller
is equipped with a Manual operation
module. When this function is active each
actuator (blowing, central heating pump,
hot water pump, additional circulating or
valve pump) can be switched on or off
independently and each active mixing valve
can be closed, opened or stopped.
You can start the motor of your
selected device by pressing the pulser. The
device will remain activated until the
pulser is pressed again.

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Additionally, an option to control the blowing power is available
where you can set any fan speed in manual mode.
III.h) Pump operation modes
This function allows you to select one of the following four boiler operation
modes:
III.h.1) House heating
When you select this option the controller
switches over to a mode where heating is
provided only to heat the central heating
circuit. The central heating pump begins to
run above the pump activation temperature
(factory set at 38OC). The pump will turn off
below this temperature (minus a hysteresis
of 2°C).
III.h.2) Boiler tank priority
In this mode, the boiler tank (hot
water) pump will be switched on first to run
until the set-point temperature is reached,
after which the pump will be turned off and
the CH circulating pump will be enabled.
The central heating pump will run all the
time until the boiler tank temperature drops
below its set-point by the hot water hysteresis value. At that moment the CH pump will turn off and the
HW pump will turn on (both pumps operating alternately).
In this mode the fan and the feeder are run only up to 62OC as measured at the boiler (instantaneous
set-point) so as to prevent overheating of the boiler.
NOTE: The boiler must be fitted with check valves on the central heating and hot water pump circuits.
The valve mounted on the hot water pump is to prevent drawing hot water from the boiler tank.
III.h.3) Pumps in parallel
In this mode both pumps begin to run
together (in parallel) above the pump
activation temperature. However, these
temperatures may vary for each pump,
depending on your settings. When this is so
one of the pumps will switch on earlier than
the other one, but after both thresholds are
crossed both pumps will run together. The central heating pump will run all the time while the hot water
pump will turn off when the boiler tank set-point temperature is reached. It will turn on again when the
temperature drops by the preset HW hysteresis value below its set-point.

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III.h.4) Summer mode
Once this function is activated the central
heating pump will be off and the DHW pump
will turn on above the preset activation
temperature and will work continuously
until the temperature drops below the
activation temperature by the hot water
hysteresis value or until the following
conditions are met:
(boiler temperature) + 2°C ≤ (boiler tank temperature)
In summer mode you only enter the set-point temperature of the boiler, which is also understood to
mean the set-point temperature of the boiler tank.
III.i) Weekly control
The function is used to programme daily changes in the boiler temperature. The preset
temperature deviations are within the range of +/-100C.
Step #1:
The user needs to set current time and date first (Installer menu > Clock).
Step #2:
The user sets temperature values for individual days of the week (Set mode 1):
Monday– Sunday
Select specific hours and required deviations from the preset temperature (how many degrees the
temperature should rise or drop) for each day of the week. Additionally, the preset values can be copied
to facilitate the operation.
Example
Monday
preset: 3 00 , temp. -100C (temperature change– 100C)
preset: 4 00 , temp. -100C (temperature change – 100C)
preset: 5 00 , temp. -100C (temperature change – 100C)
In such a case, if the temperature preset on the boiler is 60ºC, it will drop 10ºC to 50ºC between
3 a.m. and 6 a.m. on Monday.
As an alternative to the temperatures being preset separately for individual days, the
temperatures can also be set collectively, in the second mode, for the working days (from Monday to
Friday) and the weekend (Saturday and Sunday) separately - Set mode 2.
Monday - Friday; Saturday - Sunday
Similarly to the previous mode it is necessary to select specific times and required deviations from the
temperature preset for the working days (Monday - Friday) and the weekend (Saturday, Sunday).
Example
Monday - Friday
preset: 3 00 , temp. -100C (temperature change – 100C)
preset: 4 00 , temp. -100C (temperature change – 100C)
preset: 5 00 , temp. -100C (temperature change – 100C)
Saturday - Sunday
preset: 16 00 , temp. 50C (temperature change +50C)
preset: 17 00 , temp. 50C (temperature change +50C)
preset: 18 00 , temp. 50C (temperature change +50C)

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In this case, if the preset boiler temperature is 60ºC, the temperature will drop 10ºC to 50ºC between 3
a.m. and 6 a.m. on each day from Monday to Friday. However, the temperature will rise 5ºC to 65ºC
during weekend (Saturday, Sunday) between 4 p.m. and 7 p.m.
Step #3:
The user enables one of two preset modes (Mode1, Mode2) or disables the weekly control option.
Once the mode is enabled the value of the deviation currently set is displayed on the main page of the
controller next to the preset central heating system temperature. This, additionally, indicates that the
weekly control is active.
Data deletion function is a simple method to remove all previously saved weekly programme
settings to enter new settings.
III.j) Room thermostat reduction
This feature works in
conjunction with a two-state room
thermostat (standard controller) or a TECH
controller. The room thermostat reduction
parameter specifies the temperature value
by which the CH set-point is to decrease
after the room thermostat is heated up
(when the set-point temperature in the house/flat is reached). The adjustment range for settings is
between 0 and 30°C.
III.k) Language selection
Use this function to change the language settings of the controller.
III.l) Factory settings
The controller is pre-configured for its
operation. However, its settings should be
modified to meet your individual needs.
You can return to the factory settings at
any time. If you enable the factory
settings option you will lose all of your
own boiler settings, which will replaced
with the settings saved by the boiler manufacturer. From now on you can re-set your own parameters of
the boiler.
III.m) About the program
You can use this function to check the software version installed in the
boiler controller.