User’s Manual- Installation and Operation
Characteristics
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Controls the collector pump and the auxiliary heating source.
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Measures and displays store and collector temperature from 0°C to +150°C.
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It has double thunder protection and galvanic insulation.
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Can perform delayed relay activation for improved protection.
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Anti-freeze protection.
Use
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Solar thermal systems with forced circulation.
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For domestic hot water recirculation
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For auxiliary heating source (liquid or gas burners) utilization in thermosyphonic solar systems.
Safety Instructions
This device has been designed according to all up to date specifications and fulfills the necessary regulations in order to
be safely operable for many years. During the design and construction phase has been taken into account every existing
directive for such kind of equipment. You are kindly advised prior to installation and operation to consult this guide. Be
sure you realize every consequence of your action and take all necessary precautions. If you don’t understand
something do not hesitate to contact the manufacturer directly and take the advice of our technical personnel.
•
Installation must be carried out from experienced authorized electrician.
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Do not open the plastic enclosure for any reason. Such action has danger of electric shock and nullifies the warranty.
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This device can be used as control device but never as safety device of an installation.
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Do not use the device for any other purpose except of those that has been designed for i.e. solar systems control.
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Do not use the device for life critical applications.
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This device is not water resistant. Install it in an indoor place away from rain, humidity and extreme weather conditions.
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This device is not a measuring instrument.
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Do not exceed the maximum limitations as referred below for any reason.
During it’s operation the device keeps record for various operating information. The manufacturer maintains the right of
using such information if for any reason the device will be returned to the factory.
Installation
The device can be installed in “
Ω
” shaped type of rail or directly to the wall. Select carefully the place for installation in
order to avoid moisture. Reserve enough space for cables to pass through. A gap of 5 mm is recommended around the
device for better ventilation. During the installation interrupt mains supply. Choose cables of suitable cross-section and
insulation according to the applied current and voltage. The device is equipped with appropriate cable terminal clamps
for easy and safe connection. Do not over tighten the screws. Study carefully the electrical connection diagram of
Figures 1 and 2.
ATTENTION! Terminals (7,8) and (9,10) constitute the “dry” contacts of the pump and the burner relay respectively. If
you need to drive a mains operated pump or burner you have first to make the necessary connection between No 8, No
10 and No12 terminals.
The S1 temperature sensor must be of KS30-1K0 type while the S2 and S3 of RS301K5 type. Insert the probes into
correct diameter sockets for better temperature reading response and improved accuracy. Place the probes according
to the Figure 1. The maximum distance between probe and device must not exceed 30m. The connection must be done
with conventional thready two-conductor cable with cross section i.e. 0.5 mm to 1 mm. Use separate cables for probe
and load or supply connections. Mixing low-level signal probe cables and load or supply cables affects devices
performance. After the installation completion replace the front cover of the electric enclosure and ensure that when the
device is operable only the front touch panel is user accessible.
Setup
The device contains luminous display in which parameters and messages are displayed. It also contains three light
indicators colored red, yellow and green as well as three touch buttons. Became familiar with the front touch panel of the
device as shown in Figure 2.
By pressing momentarily button “POWER” the device toggles between ACTIVE and INACTIVE state. When the device
switches to ACTIVE state the message “On” is displayed. The message “Off” is displayed when the device goes to
INACTIVE state. Display shows the temperature which is defined by parameter diS the meaning of which will be
explained below.
In order to adjust the parameters of the device toggle first to ACTIVE state. The green indicator will be switched on. The
display shows again the predefined temperature. To modify these values press momentarily the key “
” or “
”. The
yellow indicator (SET/DEFROST) lights on as an indication of setup process. Display will show one after the other the
mnemonics (abbreviations) of the parameter names as well as the respective pre-stored values. When the value of the
parameter which needs change is shown at the display use “
” and “
” keys to modify. The newly entered value will be
automaticaly stored and the device will show the next.
You can modify the following parameters:
SEt Is the temperature difference (S1-S2) in which the collector pump should be activated.
dSu This value is called delayed start-up and can be adjusted between 0 sec and 240 sec. It means the delay
interval that should be elapsed before the pump relay will be activated. It is used to provide improved system stability. If
no delayed startup is needed simply set this value to zero
dt Temperature difference hysteresis. This parameter defines how many degrees should the calculated temperature
difference be reduced below the “SEt” value in order the device to switch off the collector pump.
bt Domestic hot water desired temperature. This parameter defines the temperature of domestic hot water which
will be produced by utilizing only the auxiliary energy source. The actual domestic hot water temperature can be
seriously higher depending to the solar activity.
dbt Auxiliary heating source activation hysteresis. Defines the minimum temperature decrease of the domestic hot
water temperature (bt ) which needed in order the respective relay to be reactivated.
dEF Anti-freeze option. Choose “001” if you need anti-freeze protection or “000” if you don’t. The anti-freeze option
when selected activates the collector pump when the S1 temperature is below 3°C. The relay is switched off again when
S1 temperature is over 5°C. Anti-freeze protection is functional either in ACTIVE or INACTIVE state.
diS Defines which temperature will be shown during the normal operation. Choose «000» for showing the S1-S2
difference, choose «001» for showing the S1 temperature, «002» for S2 and «003» for S3.
After the completion of the parameter setup process the yellow indicator is switched off and the device returns from setup
to the normal operation.
If you need to pass rapidly through the parameters you can do it by pressing the “POWER” key instead of waiting some
seconds.
The setup process is graphically explained in Figure 3.
Operation
By pressing momentarily the key “POWER” toggles the device between ACTIVE and INACTIVE state. While toggling
between the states «On» and «Off» messages are shown accordingly.
When the collector pump relay is activated the red indicator lights on.
When the auxiliary heating source relay is activated the red dot of the rightmost digit lights on.
If the delayed startup value has been set to a non zero value the defined delay in seconds must be elapsed prior to the
pump relay activation. During this delay the green indicator flashes.
In freezing environmental temperatures and only when the anti-freeze option is chosen the yellow indicator flashes the
collector pump relay is activated.
In ACTIVE state
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green indicator lights on or flashes
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display shows the displayes temperature as defined by diS parameter
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controls the collector pump according to the pre-stored parameters
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controls the auxiliary heating source according to the pre-stored parameters
•
checks for freezing enironmental temperature if this option is enabled (parameter dEF)
•
checks probes healthy condition
In INACTIVE state
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green indicator is either switched off or flashing
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display shows the displayes temperature as defined by diS paramete.
•
controls the collector pump according to the pre-stored parameters
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auxiliary heating source is always deactivated
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checks for freezing enironmental temperature if this option is enabled (parameter dEF)
•
checks probes healthy condition
If you press the same key continuously the display shows “---” and then the temperature readings from probe «S1=»
and «S2=». Then the device returns to the normal operation. This process is shown in Figure 4. If any kind of
A
MP-DT Integra 3P
Differential Thermostat with Auxiliary Heating Source control
& 3 sensors
Содержание MP-DT Integra 3P
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