Geco GH11RA User manual

INSTRUCTION OF
CONTROLLER OPERATION
GH11RA
FOR CONTROLLING CENTRAL
HEATING BOILERS WITH
FEEDING SCREW
Program version: 1
USER INSTRUCTIONS

USER INSTRUCTIONS GH11RA STRONA 2
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TABELE OF CONTENTS
1. INTRODUCTION ............................................................................................................................ 3
1.1. G RAPHIC SYMBOLS ................................................................................................................................ 3
1.2. K EYBOARD AND F UNCTION K EYS ............................................................................................................. 3
1. GENERAL FEATURES ...................................................................................................................... 4
2. TECHNICAL DATA .......................................................................................................................... 4
3. ELECTRICAL SYSTEM AND CONNECTION GUIDELINES ..................................................................... 5
4. QUICK START ................................................................................................................................ 5
5. GH11RA OPERATION..................................................................................................................... 7
5.1. O PERATED H EATING S YSTEM .................................................................................................................. 7
5.2. A UTOMATIC O PERATION M ODE .............................................................................................................. 8
5.3. M ANUAL O PERATION M ODE .................................................................................................................. 9
5.4. V IE ING T EMPERATURES ....................................................................................................................... 9
5.5. A LARM C ONDITIONS ........................................................................................................................... 10
5.6. P O ER O UTAGE ................................................................................................................................. 10
5.7. B OILER B URNOUT D ETECTION ............................................................................................................... 10
5.8. M AXIMUM F EEDER T EMPERATURE D ETECTION ....................................................................................... 11
6. USER SETTINGS ........................................................................................................................... 12
6.1. B OILER T EMPERATURE S ETTING (U0) .................................................................................................... 12
6.2. F EEDER O PERATION D URATION (U1) ..................................................................................................... 12
6.3. F EEDER S TANDSTILL D URATION (U2) ..................................................................................................... 12
6.4. S USTAIN P ERIOD (U3) ......................................................................................................................... 12
6.5. F AN S PEED (U4) ................................................................................................................................. 13
6.6. DH /R ETURN T EMPERATURE S ETTING (U5) ......................................................................................... 13
6.7. A NTI -L EGIONELLA F UNCTION (U6) ........................................................................................................ 13
7. OPERATING THE DHW BOILER ..................................................................................................... 14
7.1. I NSTALLATION AND C ONNECTIONS ......................................................................................................... 14
7.2. C ONFIGURATION OF A DDITIONAL P UMP ................................................................................................. 14
7.3. DH P RIORITY .................................................................................................................................. 15
7.4. S UMMER M ODE ................................................................................................................................. 15
. ROOM PANEL ............................................................................................................................. 15
9. TEMPERATURE LIMITER (STB) ..................................................................................................... 16
9.1. O PERATION PRINCIPLE ......................................................................................................................... 16
9.2. STB FUNCTION RESTART ( MANUAL ) ....................................................................................................... 16
10. PROCEDURE IN THE CASE OF CONTROLLER DAMAGE .................................................................. 17
10. CONNECTING DEVICES TO THE GH11RA CONTROLLER ................................................................. 19

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1. INTRODUCTION
1.1. Graphic symbols
Symbols intended to indicate and at the same time emphasise the importance of text containing
information that warns against dangerous situation have the following graphic forms:
Warning
⇒
Reference
1.2. Keyboard and Function Keys
This symbol is used when it is necessary in described instructions to follow the
sequence of carried out operations. The unit may be damaged or destroyed in case of
any error or proceeding in discord with the description.
Important!
This symbol indicates information of particular importance.
This symbol indicates occurrence of additional information in a chapter.
ON/OFF
MANUAL CONTROL
AUTO-OPERATION
INDICATOR
MANUAL FAN ACTIVATION
/ INCREASE PARAMETER VALUE
AUTO
SUSTAIN OPERATION
INDICATOR
MANUAL FEEDER ACTIVATION
/ DECREASE PARAMETER VALUE
PROGRAMMING

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1. GENERAL FEATURES
The GH11RA Controller is a microprocessor-based device manufactured using the Surface Mount
Technology (SMT). It is designed to control the processes of Domestic Hot ater (DH ) heating and the
main Space Heating (SH) water circuit. Control parameters can be adjusted to the current operating
conditions and boiler type. The Controller includes a system protecting from power outages and other
different disturbances.
The GH11RA Controller is fitted with:
•inputs:
1. boiler output water temperature measurement (NTC sensor),
2. fuel feeder temperature measurement (NTC sensor),
3. DH boiler water temperature measurement (NTC sensor),
• digital input:
4. feeder cotter pins removal sensor – reed switch,
•input (RS485) for connection of the room control panel GA01HA manufactured by GECO.
It also contains four outputs allowing direct connection of 230 V AC devices, i.e.: fan, fuel feeder, SH
circulation pump, DH pump or mixing pump, depending on the type of the controlled heating system (⇒
section 5, page 3).
ALWAYS DISCONNECT THE CONTROLLER FROM POWER DURING
THUNDERSTORMS
2. TECHNICAL DATA
Power supply 230V AC +10% -15%
NTC sensor resistance
characteristics
Operating temperature range +5°C to +40°C
Humidity 20% to 80% RH
Temperature
°C
Resistance
Ω
Fan protection 3.15A
0 7174.89
Sensor type NTC 2.2kΩ
10 4374.83
Sensor operating temperature
range 0°C÷100°C
20 2747.10
30 1774.91
40 1172.09
Output Maximum continuous
load
50 795.08
60 547.95
DH pump / mixing pump 1A 200
70 384.62
SH pump 1A 200
80
275.86
Fuel feeder 2A 400
90
202.37
Fan 1A 200 100 149.16

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3. ELECTRICAL SYSTEM AND CONNECTION GUIDELINES
1. The boiler room should be equipped with a 230V/50Hz electrical system, according to the
applicable regulations.
2. The electrical system (regardless of its type) should be terminated with a connection outlet fitted
with a protective terminal. Use of an outlet without a protective terminal causes electrical shock
hazard!!!
3. Connect the Controller to a separately installed power line protected with a properly selected
quick circuit-breaker or a residual-current device (RCD breaker). Do not connect any other devices
to this line!!!
REGULATOR ZASILANY JEST Z SIECI 23 V/5 HZ
JAKICHKOLWIEK NAPRAW MOŻNA DOKONAĆ TYLKO PRZY
ODŁĄCZONYM ZASILANIU NA BEZPIECZNIKU
4. QUICK START
To quickly start the GH11RA Controller, perform the following actions:
1. Connect the device to the 230V AC power system (put the plug in the power outlet).
⇒
2. Turn the Controller ON by pressing . Screen appears:

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3. Press . Screen appears:
and the Controller starts automatic operation according to the factory settings.
Table 1 Factory settings table
User
parameter Description Factory setting
U0 Boiler temperature setting 60
0
C
U1 Feeder operation duration 15 s
U2 Feeder standstill duration 45 s
U3 Sustain period 15 min
U4 Fan speed 5
U5 DH /return set temperature 40
0
C
U6 Anti-Legionella function Yes

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5. GH11RA OPERATION
5.1. Operated Heating System
5.1.1. Central heating cycle + HU cycle
INPUTS OUTPUTS
T1 – Boiler temp. P1 – Fuel feeder
T2 – Feeder temp. P2 – Fan
T3 – HU temp. P3 – HU pump
C1 – Reed relay P4 – CH pump
5.1.2. Central heating cycle + mixing pump
INPUTS OUTPUTS
T1 – Boiler temp. P1 – Fuel feeder
T2 – Feeder temp. P2 – Fan
T8 – Return temp. P4 – CH pump
C1 – Reed relay P8 – mixing pump

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5.2. Automatic Operation Mode
By pressing , you can turn on the automatic operation mode – the Controller lights the upper
indicator on ( ).
5.1.3. Fuel Feeder
In the AUTO mode, the fuel feeder operates according to the values set in the user settings U1 –
“Feeder operation duration and U2 – “Feeder standstill duration . Activation and operation of the fuel
feeder is indicated by the lower indicator on .
5.1.4. SH Pump
In the AUTO mode, the SH pump starts when the temperature of the boiler water is higher or equal
to the value set in the F06 service setting (factory setting is 40°C).
Turning the SH pump on and its operation is indicated by a vertical line at the left side of the
Controller main display screen.
The Controller turns off the pump when the water temperature drops to the activation
temperature minus 4°C. (If the SH pump start temperature is 40°C, then the SH pump stop temperature is
36°C).
5.1.5. Fan
In the AUTO mode, the fan runs continuously until the boiler temperature reaches the value set by
the user in the U0 setting. During that period the fan runs at its maximum speed. Activation and operation
of the fan is indicated by the upper indicator on .
5.1.6. SUSTAIN Operation Mode
The Controller gets into that mode when the boiler temperature reaches the value set by the user
in the U0 setting.
This mode of operation is indicated by lighting the lower indicator on ( ).
The fuel feeder and fan remain off in that mode for the period set by the user in the U3 setting. hen the
period ends, the Controller turns on the feeder and fan for the period set by the manufacturer in the F20
service setting.
The fan will operate for the period respectively longer that the feeder for the time set in the F1 service
setting in order to fire up the added coal.
The Controller will exit the SUSTAIN mode and return to the AUTO mode if the boiler temperature drops to
the value equal to the U0 – F05.
The SH pump operates identically as in the AUTO mode.

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5.3. Manual Operation Mode
In this mode, you can manually and independently turn on and off the fuel feeder and the fan. To do
this, follow the below scheme:
In the manual operation mode, you can also start the SH and DH pumps. To start the SH pump,
press the following keys simultaneously: + . Starting and running of the SH pump is
indicated by a vertical line at the left side of the Controller main display screen.
To start the DH pump, press the following keys simultaneously: + . Starting and
running of the DH pump is indicated by a horizontal line at the bottom of the Controller main
display screen.
Pressing causes the Controller to switch from automatic to manual mode, and immediately stops the
fan and the feeder.
5.4. Viewing Temperatures
After pressing , the display shows water temperature at the boiler outlet. Viewing
temperatures: DH /return and feeder is available in the AUTO and SUSTAIN modes, but only if the
DH /return sensor or feeder are properly enabled.
Press to view the feeder temperature. Press the key again to cancel the view. The view is also
cancelled after 10s from pressing of the key.
Press to get a DH /return temperature view. Press the key again to cancel the view. The view is also
cancelled after 10s from pressing of the key.
STEP 1
STEP 2
→
Controller
indicates water
temperature
measured on SH
boiler
Fuel feeder
Lower key indicator
lights. Press the key again to
stop feeder and turn off
indicator.
Fan
Upper key indicator
lights. Press the key again to
stop the fan and turn off
indicator.

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5.5. Alarm Conditions
The Controller uses 8 different alarm conditions. In each alarm condition, the Controller displays the
alarm number and activates the alarm sound output. In case of several alarm conditions occurring
simultaneously, their numbers are displayed in sequence. You can exit an alarm condition only by pressing
. This does not include the AL12 alarm condition.
Alarm conditions:
• AL1 →
STB activated or fuse blown
• AL2 →
Boiler water outlet temperature sensor failure
• AL3 →
Feeder temperature sensor failure
• AL4 →
DH /return temperature sensor failure
• AL9 →
No feeder rotation / reed switch failure
• AL11 →
Maximum feeder temperature exceeded
• AL12 →
Boiler overheating
• AL13 →
Boiler burnout
5.6. Power Outage
After a power outage the Controller starts to reactivate according to the condition it was in before the
power down. The Controller waits 1 minute to stabilise the mains power parameters, and then restores
operation with the previously programmed settings.
During the waiting period, the display shows time in seconds remaining until the end of the period,
along with indication of its condition before the power outage:
•blinking “A” for AUTO mode,
•blinking “P” for SUSTAIN mode,
•blinking “r” for MANUAL mode.
Respective indicators (AUTO or SUSTAIN ) are blinking along with the letters.
5.7. Boiler Burnout Detection
5.1.7. No Fuel
If during automatic operation the boiler outlet water temperature remains below the F08 setting
for a period of time set in the F09 setting, then the Controller considers the boiler as “burned out” and
enters the AL13 alarm condition.
5.1.8. Sudden Drop of Outlet ater Temperature
If during automatic operation the boiler outlet water temperature drops by 10°C, and during that
dropping period the temperature does not rise by 4°C, then the SH and DH pumps are switched off, and
the Controller goes into the burnout detection mode.

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The Controller waits for the period of time set in the F10 setting, during which it checks whether a rise of
4°C occurs.
If YES, then the burnout detection condition is stopped, and the SH and DH pumps (if necessary) are
started.
If NOT, this means that the furnace is burned out – the Controller enters the AL13 alarm condition.
5.8. Maximum Feeder Temperature Detection
The GH11RA Controller is equipped with an additional option of protecting from temperature rise in
the fuel feeder above the permissible value to prevent backfires into the fuel feeder.
The detection is active only in the automatic boiler operation mode (AUTO, SUSTAIN).
hen the measured temperature exceeds the value set in the F14 service setting, the fuel feeder activates
for the period of time set in the F16 service setting to eject the ignited fuel from the feeder. During the F16
period the fan remains stopped.
hen the time set in F15 service setting elapses, the Controller restores the maximum feeder temperature
detection process.
hen the feeder T > 90°C, then fan is stopped, the fuel feeder is started for a period of 2xF16, and the
display indicates the alarm condition AL11 – “Maximum feeder temperature exceeded . (⇒ section 6.5
page 5).
The Controller remains in the alarm condition until user response.
IF S14= , THEN FEEDER SENSOR OPERATION IS OFF AND THE FUNCTION
OF FEEDER MAX. TEMPERATURE INCREASE DETECTION IS NOT ACTIVE.

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6. USER SETTINGS
6.1. Boiler Temperature Setting (U0)
You can change the boiler temperature setting using the following procedure:
6.2. Feeder Operation Duration (U1)
This setting informs the user about the duration of movement of the fuel feeder in the AUTO mode.
Settings are within range of 2s to 250s.
You can change the setting using the following procedure:
STEP 1 STEP 2 STEP 3 STEP 4
→ →
or →
Green LED lights on
the key.
Display shows the
U0 setting value.
Move to
the U1
setting.
Set the desired value.
Save the new
setting.
Move to the U2
setting.
6.3. Feeder Standstill Duration (U2)
This is the period of time between two consecutive coal feeds in the AUTO mode.
Settings are within the range from 5s to 250s. You can modify this setting using similar procedure to the
described in section 6 and section 6.2 .
6.4. Sustain Period (U3)
This is the period of time after which the Controller activates the feeder and fan for the period set by
the manufacturer for the SUSTAIN mode to prevent burning out of the boiler. Settings range is from 5 min.
to 250 min. You can modify this setting in a similar way to the described in sections 6 and 6.2.
STEP 1
STEP 2 STEP 3
→ or →
Green LED lights on the
key.
Display shows current
temperature setting.
Set a new desired
temperature within range
permitted by the boiler
manufacturer.
Save the new
temperature setting.
Move to the U1
setting.

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6.5. Fan Speed (U4)
This setting determines the fan rotation speed, and thus the amount of air delivered. It allows to adjust
the fan speed according to the type and quality of the fuel used.
This setting can be set within the range of 1÷10, where “1” denotes minimum speed, and “10” maximum
speed.
You can modify this setting in a similar way to the described in sections 6 and 6.2.
6.6. DHW/Return Temperature Setting (U5)
This setting is available to the user only if the DH heating option or return temperature stabilisation
are used, and the user configured the pump with the F00 service parameter by setting it to the values “01”,
“02”, “03”, “04” (⇒ section 8.2 page 8). You can modify this setting in a similar way to the described in
sections 6 and 6.2. Settings are within the range of 35°C to 65°C.
6.7. Anti-Legionella Function (U6)
To activate the ANTI-LEGIONELLA function, set the U6 setting to 1.
hen the function is active, a blinking letter “L” is visible on the left part of the display, before the
displayed temperature value.
You can turn off the function by modifying the U6 setting to 0, or by pressing . The anti-legionella
function is also cancelled after a power down.
The ANTI-LEGIONELLA function has higher priority over other functions, therefore it is performed
by the Controller in the first order (superior function).
hen the function is activated, the temperature of water in the boiler is increased to 70°C and maintained
for a period of 10 minutes.
TURNING ON OF THE ANTY-LEGIONELLA FUNCTION CAUSES RISE OF
THE TEMPERATURE OF HUW WATER UP TO 7 C.
EXTRA CAUSION WHEN USING HUW.
MAY RESULT IN BURNING !!!

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7. OPERATING THE DHW BOILER
The GH11RA Controller allows connection of an additional pump to control the Domestic Hot ater
(DH ) in the boiler.
7.1. Installation and Connections
To use the Domestic Hot ater (DH ) heating option, perform the following actions:
1. connect the boiler according to the enclosed diagram (⇒ section 6.1.1 page 3).
2. install the DH temperature sensor in the DH boiler
3. connect the DH temperature sensor to the Controller at the appropriate terminals as
shown in Fig. 2
4. configure the DH pump for operation (⇒ section 8.2 page 8).
7.2. Configuration of Additional Pump
This procedure allows you to connect an additional pump that can be used as a mixing pump or a
Domestic Hot ater (DH ) pump operating with or without higher priority.
The DH pump is started when the boiler outlet water temperature is higher than 40°C and higher
than the water in the DH boiler (to prevent cooling of the DH boiler), and the DH boiler temperature
is lower than the temperature set in the U5 setting (⇒ section 6.6 page 7).
Pump operation is indicated by a dot on the display next to the fan symbol.
If the boiler room is configured as shown in the diagram (⇒ section 6.1.1 page 3) then the boiler
controller has no external alarm output, but allows to view the DH boiler temperature
by pressing .
Use the following procedure to program operation of an additional pump in the Controller.
STEP 1 STEP 2 STEP 3 STEP 4
→ →
or
→
Display shows
„─ ─ ─ ─”
Press and
hold for 2s
Set the desired F00 value
00 – no pump operation
01 – mixing pump
02 – DH pump winter mode without
priority
03 – DH pump winter mode with
priority
04 – DH pump summer mode
Save the
new setting

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7.3. DHW Priority
The GH11RA Controller allows to set operation of the DH pump with priority. If you choose this
mode of DH pump operation, the domestic hot water heating is a higher priority function in the
Controller.
To do this, set the F00 service setting to the value of “3”.
7.4. Summer Mode
The GH11RA Controller is equipped with a SUMMER MODE option that allows you to turn off the SH
pump for the summer season, and the boiler operates only to supply the DH water. To do this, set the
F00 service setting to the value of “4”.
. ROOM PANEL
The GH13RA controller has been fitted for full communication with the GA01HA room panel manufactured
by GECO, which allows to control boiler operation comfortably from user’s apartment.
The GA01HA room panel connected to the GH13RA controller allows:
•to change boiler preset temperature
•to change HU preset temperature
•information on all alarms to be displayed in room panel
•to view boiler operation state
•to view operation states of other units (fan, fuel feeder, central heating pump, HU pump)
•to view all measured temperature values
If the GA01HA room panel is correctly connected to the GH13RA controller, it will be automatically
detected by the controller. Then, user is not required to carry out any additional operations or make any
settings.
In this case, the controller will work according to the room panel settings.
Proceed as follows to connect the GA01HA room panel to the GH13RA controller:
Step 1 Step 2 Step 3 Step 4 Step 5
Switch off the
controller using
push-button
and remove
mains cable
plug from
socket
→
Open the
controller
(remove
upper cover
of the
housing)
→
Connect room
panel to the
controller
using
terminals
A-B-C-D (as in
Błąd!
Nieprawidło
wy odsyłacz
do zakładki:
wskazuje na
nią samą.)
→
Snap shut
upper cover
of the
controller
housing (close
the
controller)
→
Plug in mains cable
in the 230V socket
and switch on the
controller using
push-button

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9. TEMPERATURE LIMITER (STB)
The GH13RA controller is provided with an extra mechanical protection, independent of automatic
systems. It is called safety temperature limiter (STB).
9.1. Operation principle
In case heating water reaches the temperature of 95
0
C, temperature limiter will start working
automatically (it will activate the STB function), and interrupt fuel supply and air delivery to combustion
chamber (it will switch off the fan).
hen temperature in the limiter drops by approximately 20
0
C, it will be possible to restart the STB
function, but only manually.
9.2. STB function restart (manual)
In order to restart the device press push-button “RESET” installed on the left side of the controller housing.
The controller does not return by itself to automatic operation due to safety reasons.
Press push-button twice to resume the controller operation:
- first pressing of push-button will cancel the alarm and switch off the controller
- second pressing of push-button will restart the controller
- press push-button - the controller will switch to automatic operation mode
Temperature limiter (STB)

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CAPILLARY TUBE PUNCTURE OR BREAKAGE INDICATES THAT
TEMPERATURE LIMITER FILLED WITH LIQUID LEAKS, WHICH RESULTS IN
ABNORMAL OPERATION OF THE GH13RA CONTROLLER.
IN CASE IF THE ABOVE-MENTIONED DEFECT IS FOUND, IT WILL BE
NECESSARY TO DISCONNECT TEMPERATURE LIMITER FROM THE
GH13RA CONTROLLER, REMOVE IT AND REPLACE WITH A NEW DEVICE.
10. PROCEDURE IN THE CASE OF CONTROLLER DAMAGE
In a case if have been noticed any irregularities in functioning of controller, user should contact with the
supplier / producer or GECO company. Professional technical assistance will be given to him. If service
assistance is indispensable (repair of the controller), damaged controller should be dismounted from the
boiler and sent as a set (together with casing) on indicated address.
SENDING A NOT COMPLETE CONTROLLER TO THE SERVICE CAUSES AN
AUTOMATIC LOSS OF THE GUARANTEE
PREPARING THE CONTROLLER TO DELIVERY TO THE SERVICE
STEP 1
Disconnect a controller
from power supply
(remove plug from power point)
STEP 2
Remove a front panel
by using of flat screwdriver

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STEP 3
Remove a top part of casing
(lever snap fasteners)
by using of flat screwdriver
STEP 4
Remove connectors
(with connected wires) from plugs,
unscrew ground wires from PE strip,
loosen strip which is tightening wire
s and
take all wires out of the controller
STEP 5
Dismount a controller
from boiler by unscrewing
four screws in the bottom part
of the casing of the controller
STEP 6
Install top part of the casing
and front panel

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10. CONNECTING DEVICES TO THE GH11RA CONTROLLER
WYJŚCIA WEJŚCIA
01 L —
entylator (P2)
50, 51 —
Temperatura kotła (T1)
02 N —
entylator (P2)
52, 53 —
Temperatura C U (T3) / powrotu (T8)
03 L —
Podajnik paliwa (P1)
54, 55 —
Kontaktron (C1)
04 N —
Podajnik paliwa (P1)
56, 57 —
Temperatura podajnika (T2)
05 L —
Pompa CO (P4)
A —
RS-B
Panel Pokojowy
GA01HA
06 N —
Pompa CO (P4)
B —
RS-A
07 L —
Pompa C U (P3) / pompa miesz. (P8)
C — GND (⊥)
0 N —
Pompa C U (P3) / pompa miesz. (P8)
D —
+12V AC
09 N —
Zasilanie 230V
10 L —
Zasilanie 230V
Rys. 1 Schemat podłączenia urządzeń i czujników do regulatora GH11RA
ANY ADDITIONAL EQUIPMENT MAY BE CONNECTED TO THE
GH13RA CONTROLLER ONLY BY PERSON LICENSED TO
PERFORM ELECTRICAL INSTALLATION WORKS.

P.P.U.H. „Geco” Sp. z o.o.
Cholerzyn 376, 32-060 Liszki
tel. [phone]
fax. [phone]
http://www.geco.pl
e-mail: gec[email protected]