Features and technical data
16
1
1.5
ELECTRONIC BOARD
The appliance's electrical panel contains:
▶
GHP10/GHP11 electronic board with microprocessor, it
controls the appliance and displays data, messages and
operative codes. The appliance is monitored and pro-
grammed by interacting with the display and selection keys
(Figure 1.9
p. 16). The display is accessible from the right
side of the unit (detail I Figure 1.3
Figure 1.9
Heat pump module display
A
Display
B
Left selection key
C
Right selection key
D
Enter / Access menu key
E
RS232 connector
F
Chimney sweep function for heat pump module
1.6
OPERATION MODE
The operating mode of the appliance for space heating is set
on modulating by default, that is the thermal power output is
adapted to the thermal load.
For any modifications contact the installer or the TAC.
For the DHW production function, if present, the ON/OFF mode
is always used.
1.7
CONTROLS
1.7.1
Space heating control device
The appliance may only work if it is connected to a control de-
vice, selected from:
1. OQLT021 system controller (optional)
2. OCDS007 ambient chronothermostat (optional)
3. External request
1.7.1.1
OQLT021 system controller (optional)
The OQLT021 controller is able to control one K18 Simplygas
unit, one or more heating circuits and DHW production.
The main functions are:
▶
Control of one K18 Simplygas unit with variable water set-
point according to heating curves and type of DHW function.
▶
Room comfort control by controlling two heating circuits, of
which one optionally of mixed type, or zone valve control;
control based on heating curves (one for each circuit) and
optionally influence by the installed room unit/s.
▶
Buffer tank DHW production control (in dedicated prepara-
tion tank).
▶
Data display and parameters setting.
▶
Hourly programming on a weekly basis on two temperature
levels (comfort, reduced).
▶
Antifreeze protection function.
▶
Absence periods programming.
▶
Diagnostics.
▶
Errors reset.
For further details and diagrams see OQLT021 controller
manual.
1.7.1.2
OCDS007 ambient chronothermostat (optional)
The OCDS007 chronothermostat is able to control a single
K18 Simplygas unit. In this case the water setpoint is either fixed
or based on weather compensation, with a single heating curve
which is directly controlled by the K18 Simplygas unit; as such, it
can not be modified from the OCDS007 device.
The main functions are:
▶
Room timer thermostat for hourly programming on a weekly
basis on various levels of room temperature.
▶
Interfacing with the K18 Simplygas unit through volt-
age-free request contact.
▶
Reporting on the display of the device of the possible alarm
status of the K18 Simplygas unit.
For further information refer to OCDS007 manual.
1.7.1.3
External request
The appliance may also be controlled via generic enable devic-
es (e.g. thermostat, timer, switch, contactor...) fitted with volt-
age-free NO contact.
This system allows for a control similar or equivalent to that of
the system (2), depending on the type of request device used;
also, in this case a water setpoint can be used, fixed or calculated
according to the climatic curve managed by the unit.
Using a commercially available device it is generally not possible
to obtain on the device a reporting of the unit alarm. In case,
refer to the Paragraph 4.6
p. 33 for the connection instructions
of a alarm status indicator lamp.
For connection of the selected device to the appliance's
