Geco GH11TA User manual

OPERATING MANUAL FOR
THE CONTROLLER
GH11TA
TO CONTROL
CENTRAL HEATING BOILERS
WITH PISTON FEEDER
PISTON FEEDER
Programme version
01
SERVICE MANUAL
We strongly request that you study the instructions carefully before connecting
and commissioning of each of our devices. In case of any doubt, please
please contact us between 8.00 a.m. and 4.00 p.m.

SERVICE MANUAL GH11TA PAGE 3
SPIS TREŚCI
1. INTRODUCTION ................................................................................................................................. 4
1.1. GRAPHIC DESIGNATIONS .......................................................................................................................... 4
1.2. KEYBOARD AND FUNCTION KEYS ............................................................................................................... 4
2. GENERAL CHARACTERISTICS .............................................................................................................. 5
3. TECHNICAL DATA............................................................................................................................... 5
4. ELECTRICAL INSTALLATION AND CONNECTION RULES ........................................................................ 6
5. QUICK START..................................................................................................................................... 6
6. OPERATION OF THE GH11TA.............................................................................................................. 8
6.1. HEATING SYSTEM OPERATED..................................................................................................................... 8
6.2. AUTOMATIC OPERATION MODE ................................................................................................................. 9
6.3. MANUAL OPERATION MODE ................................................................................................................... 10
6.4. TEMPERATURE PREVIEW ........................................................................................................................ 11
6.5. ALARMS .............................................................................................................................................. 11
6.6. POWER OUTAGE ................................................................................................................................... 11
6.7. BOILER EXPIRATION DETECTION ............................................................................................................... 12
6.8. FEEDER MAXIMUM TEMPERATURE DETECTION ........................................................................................... 12
7. USER SETTINGS................................................................................................................................ 13
7.1. BOILER SET TEMPERATURE (U0) .............................................................................................................. 13
7.2. FUEL FEEDER STANDSTILL TIME (U1)......................................................................................................... 13
7.3. HOLDING TIME (U2).............................................................................................................................. 13
7.4. FAN SPEED (U3) ................................................................................................................................... 14
7.5. SETPOINT TEMPERATURE OF DHW/RETURN (U4) ...................................................................................... 14
7.6. ANTI-LEGIONELLA FUNCTION (U5)........................................................................................................... 14
8. OPERATION OF THE HOT WATER BOILER.......................................................................................... 15
8.1. ASSEMBLY AND CONNECTION.................................................................................................................. 15
8.2. CONFIGURATION OF AUXILIARY PUMP ...................................................................................................... 16

8.3. DHW PRIORITY .................................................................................................................................... 16
8.4. SUMMER MODE.................................................................................................................................... 16
9. ROOM PANEL .................................................................................................................................. 17
GH11TA GA01HA............................................................................................................................... 17
10. TEMPERATURE LIMITER (STB)....................................................................................................... 18
10.1. METHOD OF OPERATION .................................................................................................................... 18
10.2. RESTARTING THE STB FUNCTION (MANUAL) .......................................................................................... 18
11. DEALING WITH DAMAGE TO THE CONTROLLER............................................................................. 19
12. CONNECTING DEVICES TO THE GH11TA CONTROLLER ................................................................... 21
13. SERVICE MODE............................................................................................................................. 22

SERVICE MANUAL GH11TA PAGE 4
1. INTRODUCTION
1.1. Graphic designations
The symbols intended to signal and at the same time emphasise the importance of the text in which the
information on the warning of a dangerous situation is contained have the following graphic form:
Warning
This symbol is used when it is necessary to follow the sequence of operations in the
described instructions. If you make a mistake or do not follow the description, the
device may be damaged or destroyed.
Important!
This symbol indicates information of special interest.

Reference
This symbol indicates the occurrence of additional information in the chapter.
1.2. Keyboard and function keys
PROGRAMMING
ON / OFF
MANUAL
MODE
AUTOMATIC OPERATION
STATUS INDICATION
MANUAL FAN ACTIVATION
/ PARAMETER VALUE CHANGE
UPWARDS
AUTO MODE
OPERATING STATUS
INDICATION IN
CONTINUOUS
MANUAL SWITCHING ON OF
THE FEEDER
/ PARAMETER VALUE CHANGE
DOWN

SERVICE MANUAL GH11TA PAGE 5
2. GENERAL CHARACTERISTICS
The GH11TA controller is made using microprocessor technology with automatic surface mounting.
This controller controls the process of preparation of usable hot water (DHW circuit) and enables operation
of the main heating circuit (CH circuit). The control parameters can be adjusted to the current operating
conditions and the type of boiler. The regulator is equipped with a protection system against power
failures and various types of interference.
The GH11TA controller is equipped with:
inputs:
1. to measure the temperature of the boiler outlet water (NTC type sensor),
2. to measure the fuel feeder temperature (NTC type sensor),
3. to measure the water temperature in the DHW boiler (NTC type sensor),
digital input:
4. to connect a pin break sensor on the feeder - reed switch
input (RS485) for the connection of room panel GA01HA by GECO
It also has four outputs enabling direct connection of devices operating at 230V, i.e.: fan, fuel feeder, CH
circulation pump, HUW pump or mixing pump, depending on the supported heating system ( p.6.1, p.8).
DISCONNECT THE CONTROLLER FROM THE MAIN SUPPLY
DURING A STORM
3. TECHNICAL DATA
Supply voltage
230V ~ +10% -15%
Resistance characteristics
for NTC-type sensors
Operating temperature
od +5°C do +40°C
Moisture
od 20% do 80% RH
Temperature
°C
Resistance

Fan protection
3,15A
0
7174,89
Sensor type
NTC 2,2k
10
4374,83
Operating range of the temperature
sensor
0°C÷100°C
20
2747,10
30
1774,91
40
1172,09
Output
Maximum
continuous load
50
795,08
60
547,95
DHW pump/mixing pump
1A
200W
70
384,62
CO Pump
1A
200W
80
275,86
Fuel feeder
2A
400W
90
202,37
Fan
1A
200W
100
149,16

SERVICE MANUAL GH11TA PAGE 6
4. ELECTRICAL INSTALLATION AND CONNECTION RULES
1. The boiler room should be equipped with a 230V/50Hz electrical installation in accordance with
the relevant regulations.
2. The electrical installation (irrespective of its type) must be terminated with a plug socket fitted
with a protective contact. The use of a socket without a protective terminal connected risks an
electric shock!!!
3. The controller must be connected to a separately routed power line protected with a suitably
selected fast fuse and a residual current circuit breaker (anti-shock).No other devices may be
connected to this line!!!
THE REGULATOR IS POWERED FROM THE MAINS 230V/50HZ ANY
REPAIRS CAN ONLY BE CARRIED OUT WITH THE POWER SUPPLY
DISCONNECTED AT THE FUSE
5. QUICK START
To perform a quick start-up of the GH11TA controller, perform the following steps:
1. Connect the device to the 230V mains (plug in the socket).

2. Switch on the controller using the button . The following screen will appear:

SERVICE MANUAL GH11TA PAGE 7
3. Press the button . The following screen will appear:
The controller will start automatic operation based on the factory-set parameters.
Table of factory settings
User
Parameter
Description
Factory
setting
U0
Prescribed boiler temperature
600C
U1
Feeder standstill time
45 s
U2
Holding time
15 min
U3
Fan speed
5

SERVICE MANUAL GH11TA PAGE 8
6. OPERATION OF THE GH11TA
6.1. Heating system operated
6.1.1. CH + DHW circuit
INPUTS
OUTPUTS
T1 –Boiler Temp.
P1 - Feeder
T2 –Feeder Temp.
P2 - Fan
T3 –CWU Temp.
P3 –CWU Pump
C1 - Contactor
P4 –CO Pump
6.1.2. CH circuit + mixing pump
INPUTS
OUTPUTS
T1 –Boiler Temp.
P1 - Feeder
T2 –Feeder Temp.
P2 - Fan
T8 –Return Temp.
P4 –CO Pump
C1 - Contactor
P8 –Mixing Pump

SERVICE MANUAL GH11TA PAGE 9
6.2. Automatic operation mode
Pressing the button enters the automatic operation mode of the controller, which is signalled by
the upper indicator light on the button ( ).
6.2.1. Fuel feeder
In automatic operation, the unit operates according to a new algorithm for feeding equal portions of fuel.
The amount of fuel fed in one feeder cycle is specified in service parameter F21.
The feeder is started every time set in parameter u1- "Feeder standstill time".
After reaching the maximum advance position, the piston is retracted until the reed switch operates, the
feeder run time is reset and the feeding cycle repeats.
After switching to AUTOMAT mode from REED MODE or after a power failure, the controller activates the
feeder until reaching the maximum position of reversal (reed switch operation), then the feeder starts
operating normally.
The feeder operation is suspended after the STOP&GO function is activated. The feeder and fan operation
is not suspended (STOP&GO) if the temperature drop is more than 6 degrees below the setpoint. In
addition, this function can be deactivated using service parameter F23.
Activation of the fuel feeder and its operation is signalled by lighting up the lower indicator on the button
(p.1.2 str.4).
6.2.2. CO Pump
In AUTOMATIC mode, the CH pump is switched on if the boiler water temperature is higher than or
equal to the value set in the F06 service parameter (factory setting is 400C).
Activation of the CH pump and its operation is signalled by the lighting up of the vertical line on the
left side of the display on the main screen of the controller.
The controller will switch off the pump if the water temperature falls to the pump cut-in
temperature minus 4oC. (If the switch-on temperature of the CH pump is 400C, then the switch-off
temperature of the CH pump is 360C).
6.2.3. Fan
In AUTOMATIC mode, the fan runs continuously until the boiler reaches the preset temperature
set by the user in parameter u0. During this time, the fan operates at its maximum speed. Activation and
operation of the fuel feeder is signalled by lighting up the upper indicator light on the button.
6.2.4. Contactron
The maximum piston retraction sensor (reed switch) in AUTOMAT mode operates according to the
value set in service parameter F19. When the time 5/4value of F19 is exceeded and the reed switch does
not operate, ALARM 9 appears. (p.Błąd! Nie można odnaleźć źródła odwołania. pg.Błąd! Nie
zdefiniowano zakładki.).

SERVICE MANUAL GH11TA PAGE 10
6.2.5. HOLD MODE
The controller switches to this operating mode if the temperature on the boiler reaches the value
set by the user in parameter u0.
This mode of boiler operation is signalled by the lighting up of the lower indicator light on the button
( ).
The fuel feeder and fan remain off in this operating mode for the time set by the user in parameter u2.
After this time, the controller will switch on the feeder and fan for the time set by the manufacturer in
service parameter F19.
The fan will run correspondingly longer than the feeder for the time set in service parameter F18 to ignite
the added coal.
The controller will exit BASIC mode and return to AUTOMAT mode if the boiler temperature drops to a
value equal to u0 - F05.
The CH pump operates in the same way as in automatic operation.
6.3. Manual operation mode
In this mode of operation, the user can manually and independently switch on and off the fuel feeder
and fan. To do this, follow the diagram below:
In the manual operation mode, it is also possible to switch on the C.O. and DHW pumps. To switch
on the C.O., press the key combination simultaneously: + . Activation of the central
heating pump and its operation is signaled by the appearance of a vertical dash on the left side of
the display on the main screen of the controller.
To turn on the DHW pump, press the key combination simultaneously: + . Activation of
the DHW pump and its operation is signaled by the appearance of a vertical dash on the left side
of the display on the main screen of the controller.
Pressing the button enters manual operation mode from automatic operation mode and immediately
stops the operation of the fan and feeder.
STEP 1
STEP 2
→
The controller
shows the
measured water
temperature on
the CO boiler.
Fuel feeder
The lower indicator light on the
button comes on .
Pressing the button again turns
off the feeder, and
extinguishes the indicator light
Fan
The top light on the button
comes on . Pressing the
button again turns off the
feeder, and extinguishes the
indicator light