Geco GH10PC User manual

MANUAL
FOR CONTROLLER
GH10PC
FOR CONTROLLING CENTRAL
HEATING BOILERS FIRED WITH
PELLETS AND OATS
Program versio 01
USER MANUAL
We request that users carefully study applicable I structio s before co ecti g a d starti g up a y
of our products.
Should a y doubts arise, please co tact our Compa y betwee 8 a.m. a d 4 p.m.
Atte tio !!! At the bottom of each page you will fi d last docume t’s update date. Please, always use the
most rece t versio of the I structio s, which is available free of charge a d will be mailed to you if ordered.

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PPUH “GECO” Sp. z o.o. [Ltd.] Issue II SINCE JANUARY 2013
TABLE OF CONTENTS
1. INTRODUCTION ...................................................................................................................................... 3
1.1. G RAPHIC SYMBOLS ..................................................................................................................................... 3
1.2. K EYBOARD AND FUNCTION .......................................................................................................................... 3
1.3. D EVICE OPERATION INDICATORS ....................................................................................................................... 3
2. GENERAL FEATURES ........................................................................................................................... 4
3. TECHNICAL DATA ............................................................................................................................... 4
4. ELECTRICAL SYSTEM AND CONNECTION RULES ................................................................................... 5
5. QUICK START ..................................................................................................................................... 5
6. OPERATION OF THE GH10PC .............................................................................................................. 7
6.1. S YSTEM CONFIGURATION ............................................................................................................................ 7
6.2. A UTOMATIC OPERATION MODE .................................................................................................................... 7
6.3. M ANUAL OPERATION MODE ........................................................................................................................ 9
6.4. V IEWING FLAME TEMPERATURES ................................................................................................................ 1
6.5. A LARMS ................................................................................................................................................. 1
6.6. P OWER FAILURE ....................................................................................................................................... 1
6.7. B OILER BURNOUT DETECTION ..................................................................................................................... 11
7. USER SETTINGS ................................................................................................................................ 11
7.1. B OILER PRESET TEMPERATURE (U ) ............................................................................................................ 11
7.2. F EEDER WORKING TIME (U1) ..................................................................................................................... 11
7.3. F EEDER STOP TIME (U2) ............................................................................................................................ 12
7.4. M AINTAIN TIME (U3) ............................................................................................................................... 12
7.5. F AN SPEED (U4) ...................................................................................................................................... 12
7.6. T HE NUMBER OF GRATE ROTATION IN HEATING MODE (U5) ............................................................................ 12
7.7. G RATE STOP TIME IN HEATING MODE (U6) ................................................................................................... 12
7.8. T HE NUMBER OF GRATE ROTATION IN SUSTAIN MODE (U7) ............................................................................. 12
7.9. G RATE STOP TIME IN SUSTAIN MODE (U8) ................................................................................................... 13
. TEMPERATURE LIMITER (STB) .......................................................................................................... 13
9. ROOM THERMOSTAT ....................................................................................................................... 13
10. CONNECTING DEVICES TO THE GH10PC CONTROLLER ....................................................................... 14
11. INFORMATION ON LABELLING AND COLLECTION OF WORN OUT ELECTRICAL AND ELECTRONIC
EQUIPMENT .................................................................................................................................... 15

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PPUH “GECO” Sp. z o.o. [Ltd.] Issue II SINCE JANUARY 2013
1. INTRODUCTION
1.1. Graphic symbols
Symbols intended to indicate and at the same time emphasize the importance of text containing
information that warns against dangerous situation have the following graphic forms:
Warning
This symbol is used when it is necess
ary 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 import
ance.
⇒
Reference
This symbol indicates occurrence of additional information in a chapter.
1.2. Keyboard and function
1.3. Device operation indicators
The operation of particular devices is indicated by means of LED lights placed next to the keys (⇒
section 1.2 page 3) and by the first segment of the display. Individual lines on the display, when lit up, indicate
the operation of: the CH pump, the heater and the grate– see the figure below:
– CH pump operation,
PROGRAM
ON
/
OFF
MANUAL
MODE
SIGNALING
AUTOMATIC MODE
FAN MANUAL SWITCHI
NG
/
UPWARD VALUE CHANGE
AUTOMATIC MODE
SIGNALING
MAINTAIN MODE
FEEDER
M
ANUAL SWITCHING
/
DOWNWARD VALUE CHANGE

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PPUH “GECO” Sp. z o.o. [Ltd.] Issue II SINCE JANUARY 2013
– heater operation,
– grate.
2. GENERAL FEATURES
The GH1 PC Controller is a microprocessor-based device manufactured using the Surface Mount
Technology (SMT). It is designed to control the main Central Heating (CH) water circuit. Control parameters
can be adjusted to the current operating conditions and boiler type. The Controller includes a system
protecting it from power outages and various other disturbances.
The GH1 PC Controller is fitted with:
•Inputs analog:
1. for boiler output water temperature measurement (NTC sensor),
2. for connecting flame sensor,
•a digital input:
3. for check position of grates (Reed Relay),
4. for Room thermostat
It also contains five outputs allowing direct connection of 23 V AC devices, i.e.: the fan, the burner feeder, the
grate, the CH circulation pump and the ignition heater.
IT IS ABSOLUTELY NECESSARY TO DISCONNECT THE
CONTROLLER FROM THE MAIN DURING STORMS
3. TECHNICAL DATA
Working voltage 23 V AC +1 % -15%
Resistance characteristics
for NTC sensors
Working temperature from +5°C to +4 °C
Humidity from 2 % to 8 % RH
Temperature
°C
Re
si
stanc
e
Ω
Fan and Feeder protection 3,15A
7174,89
Sensor type NTC 2,2kΩ
1 4374,83
Temp. sensor operating range °C÷1 °C
2 2747,1
3 1774,91
Output Maximum
continuous load
4 1172, 9
5 795, 8
CH pump 1A 25 W
6 547,95
Grate 1A 25 W
7 384,62
Burner feeder* 1A 25 W
8 275,86
Fan* 1A 25 W
9 2 2,37
Heater 3A 75 W
1 149,16

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PPUH “GECO” Sp. z o.o. [Ltd.] Issue II SINCE JANUARY 2013
*I case of co ectio co trollers with co tactor or i termediary
relay. User should apply dedicated to the outputs que cher
co structio (for example: varistor co structio ).
If this ki d of protectio will be omit, This ca cause i correct worki g
or damage outputs i co troller.
4. ELECTRICAL SYSTEM AND CONNECTION RULES
Boiler room should be equipped with 23 V/5 Hz electrical system according to applicable regulations.
Electrical system (regardless of its type) should end with a plug-in socket equipped with protective contact.
Using a socket without connected protective contact may result in electric shock !!!
The controller needs to be connected to a separate power supply line protected with a properly selected quick
fuse and differential current switch (anti-electric shock). It is forbidden to connect any other equipment to
this line !!!
THE CONTROLLER IS POWERED FROM 230V/50HZ MAINS
ANY REPAIRS MAY BE CARRIED OUT ONLY WITH POWER SUPPLY
CUT OFF AT THE FUSE
5. QUICK START
Carry out the following operations in order to activate the GH1 PC controller quickly:
1. Connect the unit to the mains (plug in power supply cable).
⇒
Switch on the controller using push-button . The following screen will appear:

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PPUH “GECO” Sp. z o.o. [Ltd.] Issue II SINCE JANUARY 2013
Press push-button . The following screen will appear:
and the controller will start automatic operation based on preset factory parameters.
Table 1. Factory settings chart.
User
parameter Description
Factory
settings
U Boiler preset temperature 6 C
U1 Feeder working time 15 s
U2 Feeder stop time 45 s
U3 Maintain time 15 min
U4 Fan speed 5
U5
The number of grate rotation in heating
mode 3
U6 Grate stop time in heating mode 3 s
U7
The number of grate rotation in sustain
mode 3
U8 Grate stop time in sustain mode 5 min

GH10PC USER MANUAL PAGE 7
6. OPERATION OF THE GH10PC
6.1. System configuration
Fig. 1. Central Heating circuit
INPUT
OUTPUT
T1 – Boiler temperature P1 – Burner feeder
Tp – Room thermostat P2 – Fan
T2 – Flame sensor P3 – Heater
C1 – Reed relay grate P4 – CH pump
P5 – Grate
6.2. Automatic operation mode
By pressing , you can enable the automatic operation mode – the Controller lights up the upper indicator
on ( ).
6.2.1. Firing up
This mode of operation is indicated by the blinking of the upper indicator on ( ). Firing up
consists in controlling the burner feeder, the fan and the ignition heater so as to switch to the Automatic
Operation Mode (if F34=0, then the ignition heater cycle is skipped – Controller without ignition heater
support) without the need to enable it manually. The fan operates continuously providing the output indicated
in the F36 service setting and the Controller additionally indicates whether it activates the feeder, the fan or
the heater.
The heater activation and operation are indicated by means of a horizontal line on the left side of the
display, in the lower sign segment, on the Controller main display screen (⇒ section 1.3 page 4). During the
firing up operation the grate is all time off.

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If the sensor detects fire during firing up (sensitivity drops below the value indicated in the F3 service
setting), the firing up process is terminated and the Controller switches to automatic operation. The firing up
process follows the scheme below:
Start Firing up
Fuel container
+
Fan
Heater
+
Fan
F35
FUEL
FEEDING
FIRING UP
PHASE 1
F34
1
2
FIRING UP
MODE 2
F37
3
1
2
AUTOMATIC
MODE
3
N
O
Flam
e detection
?
1
-Cycle
1
2
-Cycle
2
3
-Cycle
3
LEGEND:
3
1
2
N
O
2
YES
Flame detection
?
AUTOMATIC
MODE
YES
AUTOMATIC
MODE
Flame detection
?
N
O
TAK
YES
Fan
4
GOING OUT
ALARM 14
1
2
3
Increase number
of cycle
Fig. 2. Diagram showing firing up process.
Burner feeder
The burner feeder operates according to the values set in the user settings U1 – “Feeder work time”
and U2 – “Feeder stop time”. Activation and operation of the burner feeder is indicated by the lower indicator
on .
6.2.2. Grate
The burner feeder operates according to the values set in the user settings U5 – “The number of rate rotation
in heatin mode” and U6 – “Grate stop time in heatin mode”. The burner feeder operates according to the
values set in the user settings U7 – “The number of rate rotation in sustain mode” and U8 – “Grate stop time
in sustain mode”.
The grate activation and operation are indicated by means of a horizontally line on the left side of the
display, in the lower sign segment, on the Controller main display screen (⇒ section 1.3 page 4).
In the firing up mode of operation the grate is off. It stats working when firing up process is finish.
The Grate start its work from the U6 parameter - Grate stop time in heating mode.
6.2.3. CH pump
In the AUTO mode, the CH pump is activated when the temperature of the boiler water is higher or
equal to the value set in the F06 service setting (factory setting is 4 °C).

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The CH pump activation and operation are indicated by means of a vertical line on the left side of the
display, in the upper sign segment, on the Controller main display screen (⇒ section 1.3 page 4).
The Controller deactivates the pump when the water temperature drops to the activation
temperature - 4°C. (If the CH pump activation temperature is 4 °C, then the CH pump deactivation
temperature is 36°C).
6.2.4. Fan
In the AUTO mode, the fan operates continuously until the boiler temperature reaches the value set by the
user in the U0 setting. During that period the fan operates at the speed set in the U4 setting. Fan activation
and operation are indicated by the upper indicator on .
6.2.5. Maintain operation mode
The Controller switches into this mode when the boiler temperature reaches the value set by the user
in the U0 setting.
This mode of boiler operation is indicated by the lower indicator on ( ).
The fuel feeder and the fan remain inactive in this mode for the period set by the user in the U3 setting. When
the period ends, the Controller activates the feeder and fan for the period set by the manufacturer in the F20
service setting.
The fan operates for a period appropriately longer than the feeder for the time set in the F1 service setting in
order to fire up the added fuel.
The Controller exits the MAINTAIN mode and return to the AUTO mode if the boiler temperature drops to the
value equal to: U0 - F05.
The CH pump operates in the same manner as in the AUTO mode.
6.3. Manual operation mode
Pressing causes the Controller to switch from automatic to manual mode, and immediately
deactivates the fan, the feeder and the pump.
In this mode, you can manually and independently activate and deactivate the fuel feeder , grate, pump
CH and the fan. To do this, follow the scheme below:
STEP 1 STEP 2
→
Controller
indicates water
temperature
measured on the
boiler
Burner feeder
Lower key indicator lights
up. Press the key again to
deactivate the feeder and the
indicator.
Fan
Upper key indicator lights
up. Press the key again to
deactivate the feeder and the
indicator.

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To activate or inactivate the CH pump, press the following keys simultaneously: + . The CH
pump activation and operation are indicated by means of a vertical line on the left side of the display, in the
upper sign segment, on the Controller main display screen (⇒ section 1.3 page 4). The grate is inactivate after
inputs reed relay change from open to close.
To activate or inactivate the grate, press the following keys simultaneously: + . The grate
activation and operation are indicated by means of a horizontal line on the left side of the display, in the lower
sign segment, on the Controller main display screen (⇒ section 1.3 page 4).
6.4. Viewing flame temperatures
After pressing , the display shows water temperature at the boiler outlet. Flame sensor
measurement is available in the AUTO and MAINTAIN modes, but only if the flame sensor are properly
enabled.
Press to view the flame sensor measurement. Press the key again to exit the view. You can also wait for
automatic exit 1 s from pressing the key.
6.5. Alarms
The Controller uses 6 different alarms. 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 , except the AL12
alarm.
Alarms:
• AL1 → STB activated or fuse blown
• AL2 → Boiler water outlet temperature sensor failure
• AL9 → No grate rotation / reed relay failure
• AL12 → Boiler overheating
• AL13 → Boiler burnout
• AL14 → Burnout when firing up
6.6. Power failure
After power failure the Controller resumes operation according to the condition it was in before the power
failure. The Controller waits 1 minute for the mains power parameters to stabilise, and then resumes
operation with the previously entered settings.
During the waiting period, the display shows time in seconds remaining until the end of the period,
together with indication of its condition before the power outage:
•blinking “A” for AUTO mode,
•blinking “P” for MAINTAIN mode,
•blinking “r” for MANUAL mode.
Respective indicators (AUTO or MAINTAIN ) are blinking together with the letters.

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6.7. Boiler burnout detection
6.7.1. No fuel
If during automatic operation the boiler outlet water temperature remains below the F0 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.
6.7.2. Sudden Drop of Outlet Water Temperature
If during automatic operation the boiler outlet water temperature drops by 1 °C, and during that
dropping period the temperature does not rise by 4°C, then the CH pump is switched off, and the Controller
goes into the burnout detection mode.
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 CH pump (if necessary) is started.
If NOT, this means that the furnace is burned out – the Controller enters the AL13 alarm condition.
7. USER SETTINGS
7.1. Boiler preset temperature (U0)
You can change the boiler temperature setting applying the following procedure:
7.2. Feeder working time (U1)
This setting informs the user about the time for which the fuel feeder will be activated in the AUTO mode.
Settings are within range of 2s to 25 s.
STEP 1 STEP 2 STEP 3
→ or →
The green LED lights up
on the key.
The display shows
current temperature
setting.
Set the new desired
temperature within the
range permitted by the
boiler manufacturer.
Save the new
temperature setting.
Move to the U1
setting.
If duri g setti g the ew temperature
o e of the followi g keys , ,
is pressed for 15 s, the ew temperature will ot be saved
a d the Co troller will exit the programmi g mode.

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You can change the setting using the following procedure:
STEP 1 STEP 2 STEP 3 STEP 4
→ →
or →
The green LED lights
up on the key.
The display shows
U parameter
current setting.
Go to U1
Set the new desired
value.
Save the new
temperature
setting.
Move to the U2
setting.
7.3. Feeder stop time (U2)
This is the period of time between two consecutive fuel feeds in the AUTO mode. Settings are within the
range from 5s to 25 s.
You can modify this setting applying a procedure similar to the one described in section 7.2.
7.4. Maintain time (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 MAINTAIN mode to prevent burning out of the boiler. Settings range is from 1 min. to
25 min.
You can modify this setting in a manner similar to the one described in section 7.2.
7.5. Fan speed (U4)
This setting determines the fan rotation speed, and thus the amount of air delivered. It allows adjusting
the fan speed according to the type and quality of the fuel used.
This setting can be set within the range of 1÷1 , where “1” denotes the minimum speed, and “1 ” the
maximum speed.
You can modify this setting in a manner similar to the one described in section 7.2.
7.6. The number of grate rotation in heating mode (U5)
This setting determines the number of grate rotation in heating mode, and thus the amount of ash throw
out. It allows adjusting the number of grate rotation according to the type and quality of the fuel used. This
setting can be set within the range of 1÷1 .
You can modify this setting in a manner similar to the one described in section 7.2.
7.7. Grate stop time in heating mode (U6)
This is the period of time between two consecutive moving grate in the heating mode. Settings are within
the range from 5s to 25 s.
You can modify this setting applying a procedure similar to the one described in section 7.2.
7. . The number of grate rotation in sustain mode (U7)
This setting determines the number of grate rotation in sustain mode, and thus the amount of ash throw
out. It allows adjusting the number of grate rotation according to the type and quality of the fuel used. This
setting can be set within the range of 1÷1 .
You can modify this setting in a manner similar to the one described in section 7.2.

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7.9. Grate stop time in sustain mode (U )
This is the period of time between two consecutive moving grate in the sustain mode. Settings are within
the range from 5min to 25 s. You can modify this setting applying a procedure similar to the one described in
section 7.2.
. TEMPERATURE LIMITER (STB)
The GH1 PC Controller can be equipped with an additional independent temperature limiter STB via
terminals 15 and 16.
WHEN THE TEMPERATURE LIMITER IS NOT USED, TERMINALS 15
AND 16 SHOULD BE SHORTED.
If due to boiler temperature rise the temperature limiter is activated and opens its terminals, it will
disable feeder and fan power supply in order to stop fuel and air delivery do the boiler. After approximately 5s
from limiter activation the Controller indicates the AL1 alarm. Return to normal boiler operation is possible
when the boiler temperature drops to a level enabling limiter reset (temperature level depends on the limiter
model used). For safety reasons the Controller does not resume automatic operation on its own.
For the Controller to resume operation you have to, after resetting the limiter, press twice:
– pressing for the first time cancels the alarm and disables the Controller,
– pressing for the second time reactivates the Controller,
– pressing causes the Controller to switch to automatic operation mode.
CAPILLARY TUBE PUNCTURE OR BREAKAGE INDICATES THAT
TEMPERATURE LIMITER FILLED WITH LIQUID LEAKS, WHICH RESULTS IN
ABNORMAL OPERATION OF THE GH10PC CONTROLLER.
IN CASE IF THE ABOVE-MENTIONED DEFECT IS FOUND, IT WILL BE
NECESSARY TO DISCONNECT TEMPERATURE LIMITER FROM THE
GH10PC CONTROLLER, REMOVE IT AND REPLACE WITH A NEW DEVICE.
9. ROOM THERMOSTAT
The GH1 PA controller can cooperate with external room thermostat ( Fig.1), which can put coal boiler
in blockade position when temperature is reached in room.
During blockade position C.H. pump stay off after 4 minutes, for the moment when temperature in room
is reached (short circuit contact). The boiler start working in maintain operation mode. The controller GH1 TA
passing from automatic operation to maintain operation mode just from time to time, when the boiler
temperature is higher than minimum temperature adjust in F03 service parameter.
When room thermostat put controller in blockade position, the boiler is in maintain operation mode and
boiler temperature fall down less than F03 service parameter than the controller come back to automatic
operation mode until both conditions will be accomplish. The controller supports the room panel of our
manufacture. The controller responses to the panel orders if the controller is under the automatic operation

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mode. Where the malfunction occurs to the connection with the panel, the controller will resume the
operation with the user programmed settings.
The illuminated dot on the segment on the left-hand side of the display shows that the communication
link is operable.
10. CONNECTING DEVICES TO THE GH10PC CONTROLLER
OUTPUTS INPUTS
14
L
—
Fan (P2)
50, 51
—
Boiler temperature (T1)
1
2
N
—
Fan (P2)
52, 53
—
Room thermostat (Tp)
1
1
L
—
Burner feeder (P1)
54, 55
—
Flame sensor (T2)
09
N
—
Burner feeder (P1)
56, 57
—
Grate reed relay (C1)
06
L
—
CH pump (P4)
05
N
—
CH pump (P4)
0
L
—
Grate (P5)
07
N
—
Grate (P5)
04
L
—
Heater (P3)
03
N
—
Heater (P3)
02
N
—
Power AC 23 V
01
L
—
Power AC 23 V
Fig. 3 Diagram of connections between equipment, sensors and the GH1 PC controller.
ANY ADDITIONAL EQUIPMENT MAY BE CONNECTED TO THE GH10PC
CONTROLLER ONLY BY PERSON LICENSED TO PERFORM ELECTRICAL
INSTALLATION WORKS.

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11. INFORMATION ON LABELLING AND COLLECTION OF WORN OUT ELECTRICAL
AND ELECTRONIC EQUIPMENT
CAUTION!
This symbol placed on the product or its packaging indicates the need for
selective collection of worn out electrical and electronic equipment. It
means that this product should not be disposed of with other household
wastes. Proper disposal of aged and worn out electrical and electronic
equipment will help to avoid potentially adverse effects for environment
and human health.
It is the user’s responsibility to collect worn out equipment separately,
and to return it to an authorized disposal company.

P.P.U.H. „Geco” Sp. z o.o. [Ltd.]
Cholerzyn 376, 32- 6 Liszki
Poland
ph.+48 12/636-98-11, 636-12-9
fax. [phone] - 2
http://www.geco.pl
e-mail: [email protected]