Geco GH10NA User manual

MANUAL
FOR CONTROLLER
GH10NA
FOR CONTROLLING CENTRAL
HEATING BOILERS WITH
AIR BLOW
Program version 02a
USER MANUAL
We request that users carefully study applicable Instructions before connecting and
starting up any of our products.
Should any doubts arise, please contact our Company between 8 a.m. and 4 p.m.
Attention !!! At the bottom of each page you will find last document’s update date. Please, always use the
most recent version of the Instructions, which is available free of charge and will be mailed to you if ordered.

GH10NA USER MANUAL PAGE 2
Issue I AUGUST 2017
TABLE OF CO TE TS
1. I TRODUCTIO ............................................................................................................................ 3
1.1. G RAPHIC SYMBOLS ................................................................................................................................ 3
1.2. K EYBOARD AND F UNCTION K EYS ............................................................................................................. 4
2. GE ERAL FEATURES ...................................................................................................................... 5
3. TECH ICAL DATA .......................................................................................................................... 6
4. ELECTRICAL SYSTEM A D CO ECTIO RULES .............................................................................. 6
5. QUICK START ................................................................................................................................ 7
6. THE GH10 A OPERATIO ............................................................................................................. 9
6.1. O PERATED H EATING S YSTEM .................................................................................................................. 9
6.2. A UTOMATIC OPERATION MODE . ............................................................................................................ 10
6.3. M ANUAL O PERATION M ODE ................................................................................................................ 11
6.4. V IEWING T EMPERATURES ..................................................................................................................... 11
6. . A LARM C ONDITIONS ........................................................................................................................... 12
6.6. P OWER F AILURE ................................................................................................................................. 12
6.7. B OILER B URNOUT D ETECTION ............................................................................................................... 12
7. USER SETTI GS ........................................................................................................................... 13
7.1. B OILER T EMPERATURE S ETTING (U0) ..................................................................................................... 13
7.2. F AN SPEED (U1) ................................................................................................................................. 13
7.3. HUW/ R ETURN T EMPERATURE S ETTING (U2) ........................................................................................ 14
7.4. A NTI -L EGIONELLA F UNCTION (U3) ........................................................................................................ 14
8. OPERATI G THE HUW BOILER ..................................................................................................... 15
8.1. I NSTALATION AND C ONNECTIONS .......................................................................................................... 1
8.2. C ONFIGURATION OF A DDITIONAL P UMP ................................................................................................. 1
8.3. HUW P RIORITY .................................................................................................................................. 16
8.4. S UMMER M ODE ................................................................................................................................. 16
9. ROOM THERMOSTAT .................................................................................................................. 16
10. TEMPERATURE LIMITER (STB) ...................................................................................................... 17
11. CO ECTIO DEVICES TO THE GH10 A CO TROLLER .................................................................. 18
12. I FORMATIO O LABELLI G A D COLLECTIO OF WOR OUT ELECTRICAL A D ELECTRO IC
EQUIPME T ................................................................................................................................ 19

GH10NA USER MANUAL PAGE 3
Issue I AUGUST 2017
1. I TRODUCTIO
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
This symbol is used when it is necessary in described instruc
tions 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.
⇒
Reference
This symbol indicates occurrence of additional information in a chapter.

GH10NA USER MANUAL PAGE 4
Issue I AUGUST 2017
1.2. Keyboard and Function Keys
USER CA TUR OFF A D TUR O CO TROLLER BY USI G BUTTO .
ACTIVATE ALL BUTTO O PA EL TOUCH KEYBORD TAKES PLACE AFTER TOUCH
EACH OF THEM A D HOLD FOR MOME TS.
ON/OFF
CH
PUMPS
MANUAL
SWITCHING / PUMPS
OPERATION
INDICATORS
AUTO
-
OPERATION
INDICATOR
FAN
MANUAL
SWITCHING /
UPWARD VALUE
CHANGE
AUTO
MAINTAIN OPERATION
INDICATOR
HUW PUMP
MANUAL
SWITCHING /
DOWNWARD VALUE
CHANGE
PROGRAMMING

GH10NA USER MANUAL PAGE 5
Issue I AUGUST 2017
2. GE ERAL FEATURES
The GH10NA Controller is a microprocessor-based device manufactured using the Surface Mount
Technology (SMT).
It is designed to control the processes of Hot Utility Water (HUW) heating and 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 from power outages and other different
disturbances.
The GH10NA Controller is fitted with:
•inputs:
1. boiler output water temperature measurement (NTC sensor),
2. HUW boiler water /return water temperature measurement (NTC sensor),
3. Flue gas temperature sensor in chimney (PT1000 sensor),
• digital input:
1. input for connection of the room thermostat panel.
It also contains four outputs allowing direct connection of 230 V AC devices, i.e.: fan, CH circulation pump,
HUW pump or mixing pump, depending on the type of the controlled heating system (⇒ section 6, page 7).
ALWAYS DISCONNECT THE CONTROLLER
FROM POWER DURING THUNDERSTORMS

GH10NA USER MANUAL PAGE 6
Issue I AUGUST 2017
3. TECH ICAL DATA
Power supply 230V AC +10% -1 %
TC sensor resistance
characteristics
PT1000 sensor
resistance
characteristics
Operating temperature
range + °C to +40°C
Humidity 20% to 80% RH
Temp.
°C
Resistance
Ω
Temp.
°C
Resistance
Ω
Fan protection 2A
0 7174,89 0 1000,00
Sensors type NTC 2,2kΩ, PT1000
10 4374,83 0 1194,00
Sensors operating
temperature range
NTC: 0°C÷100°C
20 2747,10 100 138 ,10
PT1000:
0°C÷400°C
30 1774,91 1 0 1 73,30
40 1172,09 200 17 8,60
0 79 ,08 2 0 1941,00
Output Maximum
continuous load
60 47,9 300 2120, 0
70 384,62 3 0 2297,20
HUW pump / mix pump
1A 200W
80 27 ,86 400 2470,90
CH pump 1A 200W
90 202,37 4 0 2641,80
Fan* 1A 200W
100 149,16 00 2809,80
0 2974,90
600 3137,10
*When a contactor or relay proxy is connected, use a dedicated
blowout system (eg varistor). Omission of this security measure may
result in malfunction or damage to the controller output.
4. ELECTRICAL SYSTEM A D CO ECTIO RULES
1. The boiler room should be equipped with a 230V/ 0Hz 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!!!
THE CONTROLLER IS POWERED FROM 230V/50HZ MAINS
ANY REPAIRS MAY BE CARRIED OUT ONLY WITH POWER SUPPLY
CUT OFF AT THE FUSE

GH10NA USER MANUAL PAGE 7
Issue I AUGUST 2017
5. QUICK START
To quickly start the GH10NA Controller, perform the following actions:
1. Touch keyboard calibration.
After connecting the controller to the power supply, the controller for about 4 seconds calibrates the
touch keyboard. During calibration you can not bring your hands to the sensors, because it would cause
incorrect calibration, and consequently malfunction of the keyboard. After calibration process, the device
performs a 3-second start sequence, during which it displays various information, including the firmware
version. When the start sequence is complete, the controller goes into the STANDBY mode. If the keyboard
does not work correctly, you should repeat the calibration process. To do this, disconnect controllers and
then connect the controller to a power supply and calibrate the keyboard touch one more time,
remembering not to put your hands to the sensors..
2. Connect the device to the 230V AC power system (put the plug in the power outlet).
⇒
3. Turn the Controller ON by pressing . Screen appears:

GH10NA USER MANUAL PAGE 8
Issue I AUGUST 2017
4. Press . Screen appears:
and the Controller starts automatic operation according to the factory settings.
Table 1 Factory settings chart
Parametr Opis parametru Min Max Krok Nastawa
fabryczna
U00
Boiler preset temperature
’F03’
’F04’ 1°C 60°C
U01
Fan speed
1 10 1
U02
HUW/return set temperature
3 6 1°C 40°C
U03
Anti
-
Legionella function
0 1 1 0

GH10NA USER MANUAL PAGE 9
Issue I AUGUST 2017
6. THE GH10 A OPERATIO
6.1. Operated Heating System
6.1.1. Central Heating cycle + HUW cycle
I PUTS
OUTPUTS
T1 – Boiler temp. P1 – HUW pump
T2 – HUW temp. P2 – CH pump
T3 – Flue gas temp. P3 – Fan
6.1.2. Central Heating cycle + mixing pump
I PUTS
OUTPUTS
T1 – Boiler temp. P1 – Mixing pump
T2 – Return temp. P2 – CH pump
T3 – Flue gas temp. P3 – Fan

GH10NA USER MANUAL PAGE 10
Issue I AUGUST 2017
6.2. Automatic operation mode.
By pressing , you can turn on the automatic operation mode – the Controller lights the upper indicator on
( ).
6.2.1. Fan
In the AUTO mode, the fan runs continuously until the boiler temperature reaches the value set by the user in
the U0 setting.
The fan starts with minimal speed (gear 1) and increase its speed according to F31 parameter until getting to
speed set in U1 parameter (⇒ Table 1).
When flue gas temperature sensor is connected to the controller and it is activated (F11 > 0), after exceeding
flue gas temperature set in F42 parameter the fan speed is reduced. This reduction is proportionate until the
fan stops completely.
Activation and operation of the fan is indicated by means of a vertical line on the left side of the display, in the
lower sign segment, on the Controller main display screen.
6.2.2. CH Pump
In the AUTO mode, the CH 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 CH pump on and its operation is indicated by lighting the upper indicator on .
The Controller turns off the pump when the water temperature drops to the activation temperature
minus 4°C. (If the CH pump start temperature is 40°C, then the CH pump stop temperature is 36°C).
6.2.3. Maintain 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 ( ).
When set temperature is reached and F32=0, the fan will be turned on only for periodical blows. The duration
of blow is consistent with the value set in parameter F26, and the fan works with maximum speed. The air
blows take place at the time set in parameter F27.
When F32 > 0 and the outlet water temperature does not exceed the value equal to the U00 + F33, the fan
works with speed set in F32 parameter.
The Controller will exit the MAINTAIN mode and return to the AUTO mode if the boiler temperature drops to
the value equal to the U00 – F05.
The CH pump operates identically as in the AUTO mode.