Microprocessor-controlled control unit for solar thermal systems (12 pages)
Summary of Contents for Prozeda grandis 650 HK
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Heating circuit and solar controller grandis 650 HK Menus and controller functions English version of original German installation and operating instructions Version: 1.2 January 2016...
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This manual is designed to help you use the controller properly, safely and economically. This manual represents only a part of the installation and operating instructions. Read the document before making any settings on the controller. Installation and operating instructions. Target group This manual is addressed to all persons who carry out any of the following tasks: •...
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Style conventions used in the text Specific style conventions are assigned to different elements in the manual. This makes it easy to recognise the type of text concerned: Standard text, "Menu", "Menu item", "Button designations", • lists and actions. Notes accompanied by this symbol contain information about how to operate the controller economically.
Table of contents Displaying and changing the values in the menus ..........6 1.1 Displaying values in the "Info" menu ..................... 6 1.2 Displaying and changing values in the "Program" menu ............13 1.3 Controlling switching outputs in the "Manual mode" menu ..........19 1.4 Displaying and changing values in the "Basic settings"...
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6.5 Setting the "Return line boost" function ..................45 6.6 Setting the "Wood-fired boiler" function ................... 45 6.7 Setting the "Circulation" function ....................45 6.8 Setting the "Alarm" function ......................46 6.9 Setting the "Timer" function ......................46 6.10 Setting the "HW reheating" function ................... 46 6.11 Setting the "Temperature range"...
Displaying and changing the values in the menus 1 Displaying and changing the values in the menus This chapter provides an overview of the menus and menu items. Menu items for the first menu level are displayed in bold. Menu items for the second menu level are displayed beneath in standard text.
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Displaying and changing the values in the menus Solar circuit This menu allows you to display measurement values in the solar circuit and to reset them to the current measurement value. In this case the terminal designation precedes the designation for the sensor (e. g. S01: Collector). Whenever you activate a menu item, the "Measurement value"...
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Displaying and changing the values in the menus Heating circuit In this menu you can view the measured values (1 and 2) in the heating circuits. In this case the terminal designation precedes the sensor designation (e.g. S10: Outdoor temperature). When you activate a menu item, the min and max values previously obtained will appear and you can reset to the current measured value.
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Displaying and changing the values in the menus "Comfort" menu In this menu you can enter changes. Select heating functions are clearly presented and the parameters can be changed quickly and conveniently. Use the buttons to select the required menu. Use the buttons to increase or decrease the value in steps.
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Displaying and changing the values in the menus The following menu symbols appear in the top part of the display: "Comfort" menu Symbol Description "Warmer/Colder" menu Here you can increase or reduce the room temperature. The supply line temperature of the related heating circuit (5) will then be corrected by the value set here. "Party"...
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Displaying and changing the values in the menus Status This menu allows you to display the following status messages: Menu item Description Solar The following status messages can be displayed: – Off – Charging priority 1/2 – Collector protection – System protection –...
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Displaying and changing the values in the menus Overview This menu allows you to display an overview of all outputs (2) and inputs (1). No value will be displayed if a sensor is not connected. If an arrow symbol is shown (3), you can use the buttons to display the other values.
Displaying and changing the values in the menus 1.2 Displaying and changing values in the "Program" menu The "Program" menu allows you to display and change the parameters. WARNING Risk of scalding from hot water as a result of incorrect settings. Exercise particular care when configuring settings on the controller.
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Displaying and changing the values in the menus Heating circuit 1-4 Menu item Description Description Here you can specify a designation for the heating circuit. The following terms are available: Heating circuit, Basement, Ground level, Upper level, Floor, Radiator, Wall heating system, Ceiling heating system, Top floor, Flat, Building.
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Displaying and changing the values in the menus Time window adjustment - heating system For each time window you can select one of the preset SL corrections or "Off" mode. In this way you can implement various reductions or increases as part of the day's program. In the example below, the heating circuit will be operated with SL correction 1 from Mo to Fr 22:00h.
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Displaying and changing the values in the menus ECO mode Menu item Description Function Switching the "ECO mode" function on or off This function can be switched on or off for each heating circuit and for the hot water request. Within the time window, the request values for the reheating will be reduced by the respective lowering values.
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Displaying and changing the values in the menus Menu item Description Waiting time (alternating Here you can define for how long the hot water processing must mode) remain in waiting mode. Time window 1–3 Mo–Fr Here you can select the week-days on which you want the programmed time window to be active.
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Displaying and changing the values in the menus Menu item Description Tlimit min. Lower limit of a temperature range With this value you can set the lower limit of a temperature range. The multi-function controller switches only within this temperature range.
Displaying and changing the values in the menus 1.3 Controlling switching outputs in the "Manual mode" menu The "Manual mode" menu allows the controller's switching outputs to be turned on and off for test purposes. To enable the controller to run in automatic mode again, you have to exit manual mode after completion of setting tasks.
Displaying and changing the values in the menus 1.4 Displaying and changing values in the "Basic settings" menu The "Basic settings" menu allows you to display and change basic settings. ATTENTION Risk of system malfunctions due to incorrect settings. Make sure that users use only user mode. Make sure that the values are only ever changed by specialist personnel.
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Displaying and changing the values in the menus Solar circuit Menu item Description Hydraulic layout Set the system type. Layout: abc.x a: Number of storage tanks b: Number of collectors c: Extensions (0=None, 1=Heat exchanger, 2=Bypass) x: Variant When the hydraulic layout is changed, all the preset parameters and additional functions will be reset.
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Displaying and changing the values in the menus Menu item Description Condition time This parameter is used to set how long the conditions for switching on and off must be active in order to take effect. Recooling Function Switch the "Recooling" function on or off Recooling temp The temperature to which the storage tank is recooled after the "Collector protection"...
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Displaying and changing the values in the menus Heating circuit Menu item Description Heating circuits 1-4* For more settings for the individual heating circuits, see below this table. Heating curve Linear The heating circuit control of the two heating circuits is based on a linear calculation.
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Displaying and changing the values in the menus Menu item Description Delayed off The request remains active during the delayed off period. Reheat sensor 2 Sensor for switching off the burner request. This sensor is freely assignable. A message will appear if the sensor is not connected. The reheating function automatically uses the "Middle of storage tank"...
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Displaying and changing the values in the menus Menu item Description Switch-off day Switch-off day (If the average outdoor temperature during the day lies above this value, the heating will be switched off.) Switch-off night Switch-off night (If the average outdoor temperature in the night lies above this value, the heating will be switched off.) Supply line max limit Supply line max...
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Displaying and changing the values in the menus Yield measurement Menu item Description Measurement method Activate yield measurement with the preferred measurement method. You can choose between the following measurement methods: – DFG (flow sensor) – VFS (vortex flow sensor) –...
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Displaying and changing the values in the menus Menu item Description Sink sensor Select the sensor input for the sink Output Select the output of the MFC Speed "Wood-fired boiler", “Return line boost” and “Wood-fired boiler” functions: Minimum pump output with speed control. 100% = Speed control off Delayed off The switching output remains active during the delayed off period.
"Heating circuit" function 2 "Heating circuit" function The device can be used to control up to two heating circuits on the basis of the outdoor temperature. These circuits can be mixed or unmixed. You can define separate control characteristics for each heating circuit. 2.1 Mixed heating circuit The control characteristics described in the following can be configured only in the "Basic settings"...
"Heating circuit" function Selecting the heating curve from a set of curves Assuming a desired room temperature of 20 °C, a corresponding supply line setpoint temperature is derived from the selected heating curve and the outdoor temperature development. The parameters "Supply line max limit" and "Supply line min limit" are used as absolute limits for the supply line setpoint temperatures of the upper and lower heating circuits.
"Heating circuit" function Kelvin the supply line setpoint temperature will be lowered in reduction mode, i.e. outside the active time windows. 2.3 Switching the heating circuit pumps off and on Heating circuit pumps are switched off in the following cases: •...
"Heating circuit" function 2.5 Putting the heating circuits into operation More or fewer heating circuit functions are available depending on the scope of the selected solar functions. The putting into operation of the heating circuit 1 as a mixed heating circuit will be described by way of example.
"Heating circuit" function °C Max. temp. Start temp. Duration Holding The number of steps is calculated from the difference between the start temperature and the maximum temperature and from the increment. 2.7 Room sensor (RS) You can connect up to 3 room sensors per heating circuit. The navo 400 room user terminal, which acts as both a room sensor and remote control, can be connected respectively as room sensor 1 via the bus.
“Solar” function 3 “Solar” function Setting the general controller functions The general controller functions allow you to configure the settings for charging the storage tanks. You can set the following controller functions: • Charging method • "Storage tank priority" function •...
“Solar” function The "Storage tank priority" function controls the tank charging of dual tank systems. There are the following types of dual tank systems: • Systems with two separate storage tanks • Systems with a stratified storage tank (a storage tank with two heat exchangers, one on top of the other) •...
“Solar” function 3.4 Setting the pump control system You can connect standard pumps and high-efficiency pumps (HE pumps). For these you can set the following types of control system: • 230 V block modulation (standard pumps) • Analog control (HE pumps) •...
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“Solar” function Controlling HE pumps with PWM signals In the case of the pump control system with PWM signal, the controller sends a PWM signal (pulse width modulation signal) to terminals HE1, HE2 and HE3. The PWM signal can be sent normally (not inverted) or inverted. In the case of the pump control system with a non-inverted PWM signal, the nominal speed of the pump (0–100 %) corresponds to the PWM signal (0–100 %).
“Solar” function 3.5 Setting the "Tube collector" function If the solar power system is equipped with tube collectors, you have to activate this function. The control type is selected in the following menu item: • Basic settings/Solar circuit/Tube collector/Function − Time-controlled −...
Setting protective functions 4 Setting protective functions In order to protect the solar power system against frost and overheating, the controller is equipped with the following protective functions: • "Collector protection" function • "Storage tank protection" function • "System protection" function •...
Setting protective functions 4.3 "System protection" function This function is active at all times. This function protects the system against overheating. If the temperature of the collector rises above the preset system protection temperature, the solar circuit pump switches off. When the temperature falls below the system protection temperature, the system will be in the "Collector protection"...
Setting protective functions This function protects the system against overheating in the following situations: • If no hot water is used over an extended period of time (e. g. during a vacation) • If the collector protection temperature is exceeded If the temperature in the collector falls below the temperature in the storage tank (usually at night), the solar circuit pump switches on.
Measuring the energy yield For this control type you can set the following parameters: • Program/Solar circuit/Radiation 4.8 Setting the "Anti-freeze" function The "Anti-freeze protection" function can be activated only if the "Drain-back" function has been deactivated. This function protects the solar power system against the heat transfer fluid freezing. If the temperature falls below the preset temperature, the solar circuit pump switches on.
Setting multi-function controllers (MFC) Energy yield measurement in any hydraulic circuit is possible with yield measurement 1 (set as independent) and energy yield measurement 2. This is also possible with energy yield 3 to 6 if flex 400 modules are connected optionally. An additional flow sensor or vortex flow sensor is needed for energy yield measurement 2 and 3–6 (when flexboxes connected).
Setting multi-function controllers (MFC) 6 Setting multi-function controllers (MFC) You can activate up to 6 multi-function controllers (MFC). The sensors and the output (incl. HE1-HE3) can be freely assigned. The connected flex-modules can be also used for that purpose. The outputs are not linked to the PWM outputs (HE1-HE3). This can be achieved via a respective link.
Setting multi-function controllers (MFC) For this function you can set the following parameters: • Basic settings/MFC 1-6/Source sensor, Output • Program/MFC 1-6/Setpoint temperature • Program/MFC 1-6/Hysteresis • Program/MFC 1-6/Time 1–3: Start (Stop) 6.2 Setting the "Heating" function In the case of the "Heating" function, the switching output of the multi-function controller switches on as soon as the temperature falls below the preset switch-on temperature.
Setting multi-function controllers (MFC) 6.4 Setting the "Threshold value switch" function In the case of the "Threshold value switch" function, the switching output of the multi- function controller switches on as soon as the temperature reaches the preset switch-on temperature. If the temperature drops below or rises above the preset temperature range (hysteresis), the switching output of the multi-function controller switches off.
Setting multi-function controllers (MFC) Temperature-controlled The switching output of the multi-function controller switches on as soon as the temperature falls below the preset setpoint temperature. If the temperature rises above the upper limit of the preset temperature range (hysteresis), the switching output switches off.
Setting multi-function controllers (MFC) 6.11 Setting the "Temperature range" function With this function you can set the upper limit and the lower limit of a temperature range. The multi-function controller will switch only within this temperature range. For this function you can set the following parameters: •...
Setting multi-function controllers (MFC) When the leadfing ouput is switched off, the MFC will also be switched off and reset to its initial state. For this function you can set the following parameters: • Basic settings/MFC 1–6/output. • Basic settings/MFC 1–6/Delayed off period •...
Setting multi-function controllers (MFC) • Basic settings/MFC 1/ Mixer parameters (total actuating time, actuating time, cycle time) • Program/MFC 1/Hysteresis An example layout can be found in the document Hydraulic layouts. 6.16 Setting the "Valve" function (only MFC 2) With this function you can boost the return line by valve in accordance with the calculated maximum supply line setpoint temperature of the heating circuits.
Setting multi-function controllers (MFC) This function makes sense for systems with a solar combination storage tank. You must set the respective radiator thermostats by hand in order to prevent unwanted heating of the rooms in the summer. For this function you can set the following parameters: •...
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Setting multi-function controllers (MFC) This would mean that MFC with output R3 is active only if: • The switch-on conditions are met AND • R1 is on (1) AND R2 is off (0). R3, R4, R5, R6, R7, R0, HE1, HE2 and HE3 do not need to be taken into account (x). Its own output (in this case R3) cannot be edited.
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Setting multi-function controllers (MFC) Example for MFC R3 with OR-OR Logic: This would mean that MFC with output R3 is active only if: • The switch-on conditions are met OR • R1 is on (1) OR R4 is on (1). The value „1xx1xxxxxxx“...
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