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User Instructions for GECO GH21TA controller

______________________________________________________________________________

Page 30 Edition I

19.06.2013

10. Alarms

The controller has 11 alarms, including eight which will stop the controller for safety

reasons and three that are warnings. For each alarm or notes, the number is displayed, along
with text information describing the problem, and an audible alarm will sound. When multiple
alarms occur, the details are displayed cyclically.

Exiting the alarm is only possible by pressing the button

, with the exception of alarm

AL12 (overheating boiler), which the controller automatically exits when the temperature
falls below the value set in S17, 4°C. When the user accepts conditional operations, the alarm
is swithched off but is activated again every time the controller is turned on.

Types of alarm

•

AL1

→

Blown fuse/temperature limiter tripped

•

AL2

→

Damage of water outlet boiler temperature sensor

•

AL3

→

Damage to fuel feeder temperature sensor

•

AL4

→

damage to DHW/returning water temperature sensor

•

AL9

→

Fuel feeder not turning/ damage to reed relay

•

AL11

→

Maximum fuel feeder temperature exceeded

•

AL12

→

Overheating boiler

•

AL13

→

Boiler extinguished

Type of notes (warning):

•

UW4

→

damage to DHW/returning water temperature sensor

•

UW10

→

Anti-Legionella function notexecuted

•

UW17

→

Elevated temperature in fuel feeder

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Содержание GH21TA

Страница 1: ... BOILER CONTROLLER WITH PISTON FEEDER USER MANUAL We strongly recommend that you familiarise yourself fully with the contents of this manual before installing and using any of our devices If you have any questions please contact us between 08 00 and 16 00 ...

Страница 2: ...1 DHW PRIORITY HOT WATER 20 7 2 SUMMER FUNCTION 20 7 3 ANTI LEGIONELLA FUNCTION 20 7 4 GA03HA ROOM PANEL 21 7 5 FUEL FEEDER TEMPERATURE DETECTION 22 7 6 BOILER EXTINGUISHED DETECTION 23 7 7 ANTI STOP FUNCTION 23 7 8 GRATE MODE 24 7 9 PUMP ONLY MODE 24 7 10 OPERATION RECORD 24 7 11 EMERGENCY WORK 24 8 SYSTEM INSTALLATION 25 8 1 HEATING INSTALLATION NUMBER 1 25 8 2 HEATING INSTALLATION NUMBER 2 26 8...

Страница 3: ... device supports three temperature sensor inputs digital input for reed relay switch additional output for room panel GA03HA and four outputs for external devices The GH21TA controller is equipped with Temperature inputs to measure the temperature of the water coming from the boiler to measure the temperature of the feeder tray to measure the temperature of the water in the boiler returning CH tem...

Страница 4: ...cable regulations 3 The controller should be supplied from a dedicated circuit 230VAC 50Hz grid protected by a circuit breaker 4 The controller power cable should have a cross section minimum mechanical strength of 2 5 mm2 5 The cable must be protected from mechanical damage by keeping it in a duct or housing 4 Graphic and text descriptions of driver connections When the cable has been prepared yo...

Страница 5: ...ater in the DHW boiler Return temp NTC 52 53 Fuel feeder NTC 54 55 Description of controller inputs room thermostat GA03HA Type of room thermostat Type of input Controller designation GH21TA dedicated room panel GECO RS485 58 59 60 61 Description of controller inputs digital Cotter pin break sensor for feeder Type of input Controller designation Reed relay CTC100 56 57 Description of controller ou...

Страница 6: ...algorithm is implemented in the control mode selected depending on the type of fuel Maintain the controller enters this mode if the boiler temperature reaches the set point In this mode an individually prepared algorithm is implemented Manual This mode is used only to validate the on off tests for each installation of technological equipment so when you are sure that tests are finished go to the a...

Страница 7: ...ing the button During normal operation it is possible to return the controller to standby mode at any time by pressing the button In standby mode all outputs and the alarm sound signal are disabled When the controller is switched to automatic mode the display shows the actual temperature of the water in the boiler the set temperature and information about the controller mode 5 2 Automatic mode hea...

Страница 8: ... in service parameter S18 in order to ignite the fuel supplied The controller will exit maintain mode and return to automatic mode if the temperature of the boiler falls below the value set in installation parameter boiler temperature hysteresis which can be edited by the user The central heating pump works in the same way as in automatic mode When working in automatic mode maintain text informati...

Страница 9: ...on about the warning and the types of operations conditionally possible without the sensor The user must always accept operations that are conditional on the lack of sensor each time the controller is restarted This applies only to those sensors which do not affect the safe operation of the heating system The other functions of the note mode are to give information when the hot water tank has not ...

Страница 10: ...enu From the alarm and note screen go to Data service The screen shows help for users The screen shows product information and service helpline information Confirm change Enter Menu from the main screen Saves change Goes to Menu from the main screen Exit without confirming changes Hold the button for three seconds to go to the main screen Exit to previous screen or higher level menu Right arrow Qu...

Страница 11: ...meters of the controller ie temperature measured by the controller device status and active inactive control functions All information on the work of the heating system are divided into categories and placed on separate screens Move between the screens by using the buttons At the bottom of every screen there is a text description of the item Move between items on the screen using the buttons In th...

Страница 12: ... the negation of the icon corresponding to the device Current additional functions are shown in the same way System temperature preview is possible in all controller modes In the manual mode it is also possible to switch devices on and off 6 4 Help button Using the button from the main screen opens the help menu from where the user can get service information and descriptions of all icons displaye...

Страница 13: ...TURER OR TECHNICIAN 6 5 Manual mode Pressing the button in automatic mode switches the controller to manual mode and immediately stops all devices In this mode the user can manually turn on off the fan feeder heating pump and hot water pump independently of each other To do this press the button which will open the screen for editing the devices After moving to the desired position on the screen a...

Страница 14: ... optional Feeder stop time Control panel settings 4 Language selection Date and time Anti Legionella optional Maintain time Alarms and notes Boiler operating time Emergency work time Exceeding maximum temperature Display selection Standard Profile 1 Control mode Standard control Fire grate mode Anti stop function Standard Full Off Emergency work Inactive Power supply outage Pump only Feeder Fan Fa...

Страница 15: ...urning temperature Temperature to which the boiler will rise This parameter is available for users only when the DHW temp DHW additional mixer pump temp returning option is selected Fan speed This parameter sets the fan speed i e the amount of air supplied It allows the selection of fan speed depending on the quality and type of fuel used Feeder stop time This is the interval between each supply o...

Страница 16: ...Fan 1 3 1 System configuration Allows selection of the heating system operated by the controller with an additional pump or without A description of the system is in section 8 DHW priority Activating the function makes water heating the primary function of the Controller A description of the functions in section 7 Summer mode This function turns off the central heating pump and the boiler operates...

Страница 17: ...ion on all controller malfunctions and custom activities is stored All failures and irregularities identified by the programme are stored and archived according to whether they are alarms or notes Operation history menu Additional information is stored to help the user or service technician identify any irregularities in system operation The types of events recorded in operation history are Alarms...

Страница 18: ...e screen shows the operating time in automatic heating and maintain mode The time is measured by the hour h Emergency work time The screen shows safe mode operating time without breakdown of feeder and fan measured by the hour h Exceeding maximum temperature The screen shows the number of times the maximum temperature of 85 C has been exceeded displayed in number of incidences ...

Страница 19: ...ller has failed displayed in number of incidences 6 6 4 Control panel settings Settings for the controller which do not effect heating system operations can be found in the controller settings panel Language selection The controller allows the user to choose from one of several language settings Date and time In order to ensure that all of the controller functions work correctly and at the optimum...

Страница 20: ...n off the CH pump so that the boiler only heats water For this function to work a system installation supporting a DHW pump must be selected This is only available in the second configuration To enable this function set the value to YES in the main menu 7 3 Anti legionella function The controller is equipped with an Anti legionella function aimed at limiting the growth of bacteria of the genus leg...

Страница 21: ...tion 7 4 GA03HA room panel The GH21TA controller is adapted to communicate with GECO s GA03HA room panel enabling an easy overview of the boiler from the comfort of your home Connecting the GH21TA controller to the GA03HA room panel allows Changing the boiler output temperature setting Changing the DHW hot water or returning temperature setting All alarms to be viewed in text format Monitoring of ...

Страница 22: ...59 60 61 as shown in the diagram below Insert the plug into a 230V socket and turn on the controller using the button Diagram for connecting the GA03HA room panel to the GH21TA controller 7 5 Fuel feeder temperature detection The GH21TA controller has the additional option to protect against temperature in the fuel feeder tray rising above the permitted level preventing the flame from heating the ...

Страница 23: ... water leaving the boiler When in automatic mode the temperature of water leaving the boiler is lower than 10 C and in a short time does not increase by 4 C the CH pump and hot water pumps are turned off and the controller enters boiler extinguished detection mode The controller waits for the time set in parameter S10 to check whether there is an increase of 4 C o When this temperature rise DOES o...

Страница 24: ...re supported It is usually used when the type of fuel is being changed for example to wood or any other combustible eco fuel without fan support The controller only operates the pumps When this mode is activated the main screen shows the text pump only in heating mode This type of regulation can be changed by the user by changing the parameters of the system to turn off the standard heating regula...

Страница 25: ...ices and inputs for temperature sensors Diagram 1 Summary of user parameters Parameter Range Factory settings Set temperature of boiler 50 85 50 C Feeder stop time 5 250 45s Maintain time 1 250 15min Fan speed 1 10 5 Diagram 1 Assignment of controller outputs Output Device connected O5 O6 CH pump O7 O8 O9 11 Feeder 12 14 Fan Diagram 1 Assignment of controller inputs Input Description 50 51 Sensor ...

Страница 26: ...2 summary of user parameters Parameter Range Factory settings Set temperature of boiler 50 85 50 C Feeder stop time 5 250 45s time 1 250 15min Fan speed 1 10 5 Set temperature of boiler 35 65 40 C Diagram 2 Assignment of controller outputs Output Connected devices O5 O6 CH pump O7 O8 DHW pump O9 11 Feeder 12 14 Fan Diagram 2 Assignment of controller inputs Input Description 50 51 Sensor for water ...

Страница 27: ...gram 3 Summary of user parameters Parameter Range Factory settings Set boiler temperature 50 85 50 C Feeder stop time 5 250 45s Maintain time 1 250 15min Fan speed 1 10 5 Returning temperature 40 60 50 C Diagram 3 Assignment of controller outputs Output Connected devices O5 O6 CH pump O7 O8 Mixer pump O9 11 Feeder 12 14 Fan Diagram 3 Assignment of controller inputs Input Description 50 51 Sensor f...

Страница 28: ...lt is 400C When the CH pumps are operational this is indicated by a CH pump icon in the negated backlit position in system operation preview The controller disables the pumps if the water temperature in the boiler drops to the pump activation temperature minus 4oC If the activation temperature is 400C the pumps will be disabled at 360C When the CH pumps are disabled this is indicated by a pump ico...

Страница 29: ...p is disabled this is indicated by a DHW pump icon without negated backlight in the system operation preview 9 5 Maintain mode fan and feeder The controller enters this mode if the temperature of the boiler reaches the value set by the user in the parameter set boiler temperature The fuel feeder and fan are disabled in this mode for the time set by the user in the parameter maintain time After thi...

Страница 30: ... AL12 overheating boiler which the controller automatically exits when the temperature falls below the value set in S17 4 C When the user accepts conditional operations the alarm is swithched off but is activated again every time the controller is turned on Types of alarm AL1 Blown fuse temperature limiter tripped AL2 Damage of water outlet boiler temperature sensor AL3 Damage to fuel feeder tempe...

Страница 31: ...ler detects a zero signal from the power supply for two seconds This may be caused by a blown fuse or tripped temperature limiter Button goes to service data and the controller is stopped Alarm 2 Damage of water outlet boiler temperature sensor This alarm occurs when the NTC 2 2k sensor for testing the temperature of water from the boiler is damaged or not properly connected Button goes to service...

Страница 32: ...feeder temperature sensor is damaged Safe mode operation will continue until the controller is turned off or the power is cut After one of these events the controller returns to manual or automatic mode determines that the sensor is faulty and stores this as an alarm so the operator must force safe mode again In save mode the controller will continue to operate without the fuel feeder temperature ...

Страница 33: ...water temperature sensor is damaged or not properly connected It occurs only when the heating configuration includes an additional DHW Mixer pump When the service parameter S49 0 the alarm is reported as AL4 After confirmation by the user the boiler can work in safe mode without the DHW returning water temperature sensor When parameter S49 1 note UW4 occurs then the controller switches to safe mod...

Страница 34: ...on is detected according to the sensor value in the service parameters The alarm is activated when the time between the pulses of the reed relay is greater than 1 25 S19 S22 0 1s Safe mode operation continues until the controller is turned off or power is cut After this the controller determines the damage to the reed relay and stores this as an alarm so the operator must force safe mode again In ...

Страница 35: ...er exceeds 90 C Alarm 12 Overheating boiler This alarm occurs when the temperature of water coming from the boiler exceeds that set in parameter S17 C If the temperature of water from the boiler drops to four degrees below that set in S17 the controller returns to work in manual or automatic mode depending on how it was operating before alarm AL12 was activated Alarm 13 Boiler extinguished The con...

Страница 36: ...er exceeds service parameter S14 C When the value of S14 is exceeded the feeder and fan switch to the mode to disperse fuel from the feeder 11 Emergency work Safe mode allows the boiler to work in case of damage to the feeder and or fan TRIAC until servicing is possible In order for the controller to operate the feeder fan in safe mode the appropriate mode must be chosen from the controller menu f...

Страница 37: ...alified wiring technician During safe mode it is not possible to regulate the speed of the fan 12 Temperature limiter STB Regulator The GH21TA controller is equipped with an independently operating automatic safety device called a temperature limiter STB 12 1 How it works If the water temperature reaches 95C the temperature limiter automatically stops the flow of fuel and air to the combustion cha...

Страница 38: ...er into automatic mode Puncture or damage to the capillary of the temperature limiter indicates a leakage which can lead to the GH21TA malfunctioning In this event disconnect the temperature limiter from the GH21TA controller and replace it with a new device 13 Loss of power After loss of power the controller will return to the state it was in before the power was cut If if was turned off it will ...

Страница 39: ...l alarms and notes See information about current additional functions of the controller If the GA03HA room panel is correctly connected to the controller it will be automatically detected and does not require any additional steps or settings from the user In this case the controller works according to the settings on the room panel Disconnecting the room panel interrupting communication or damage ...

Страница 40: ...tions 58 59 60 61 as shown in diagram 12 1 Insert the plug into a 230V socket and turn on the controller using the button Diagram 12 1 connecting the GA03HA room panel to the GH21TA controller 15 In case of damage to the controller If the controller malfunctions contact the supplier manufacturer of the boiler or GECO for technical advice If the controller needs to be repaired or serviced remove it...

Страница 41: ...r for servicing Step 1 Disconnect the controller from the power supply unplug from the wall socket Step 2 Remove the front panel using a flathead screwdriver Step 3 Remove the housing cover using a flathead screwdriver Step 4 Disconnect the wires from the terminals remove the cables from the sheaths loosen the cable clamp strip and remove all cables from the outside of the controller ...

Страница 42: ..._____________________________________________________________ Page 42 Edition I 19 06 2013 Step 5 Remove the controller from the boiler by unscrewing the 4 screws in the lower part the controller housing Step 6 Replace the top cover of the housing and front panel ...

Страница 43: ... on the product or on its packaging indicates separate collection of waste electrical and electronic equipment This means that the product should not be disposed of with other household waste Proper disposal of old and used electrical and electronic equipment will help prevent potential negative effects on the environment and on human health The user is obliged to arrange the separation and dispos...

Страница 44: ...P P U H Geco Sp z o o 32 060 Liszki Poland Cholerzyn 376 tel 012 6369811 6361290 fax 012 6362002 http www geco pl ...

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