Geco GH10TA, User Manual, Page: 17 / 20

GH10TA USER MANUAL PAGE
17
Issue I July 2017
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
– HUW pump winter mode without
priority
03 – HUW pump winter mode with
priority
04 – HUW pump summer mode
Save the
new setting
8.3. HUW Priority
The GH10TA Controller allows to set operation of the HUW pump with priority. If you choose this mode
of HUW pump operation, the hot utility water heating is a higher priority function in the Controller.
To do this, set the F00 service setting to the value of “ 3 ”.
8.4. Summer Mode
The GH10TA Controller is equipped with a SUMMER MODE option that allows you to turn off the CH
pump for the summer season, and the boiler operates only to supply the HUW water. To do this, set the
F00 service setting to the value of “ 4 ”.
9. ROOM THERMOSTAT
The GH10TA 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 GH10TA 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 or
when HUW circulation require automatic operation controller ( it depend of HUW Priority).
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 or HUW circulation need heating, 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 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.