First start-up
40
5
Parameter
Do not modify
Description
Setting
Default
220 (8)
Delivery water temperature control in DHW mode
0. return
1. delivery
1
225 (9)
Setpoint management
0. Fixed setpoint
1. heating curve
1
226 (9) (10)
Fixed water setpoint for space heating
The minimum and maximum values depend on
what has been set in the installation stage
40
227 (9)
DHW setpoint with closed COM-DHW contact
from 10 °C to 80 °C
55
228 (9)
Heating curve slope for space heating
from 10 to 400
75
229 (9)
Heating curve offset for space heating
from -5 K to +5 K
0
230 (9)
Room temperature setpoint with heating curve for space heating
from 0 °C to 40 °C
20
236 (11)
Delivery water temperature setpoint increase (boost) for DHW
service
from 1 K to 10 K
5
238
AUX 3 temperature probe usage
0. none (probe not installed)
1. outdoor temperature probe
2. DHW buffer tank temperature probe
0
1
If modulation of circulation pump in space heating mode is not active, i.e. parameter 174 set to 0.
2
If modulation of circulation pump in DHW mode is not active, i.e. parameter 183 set to 0.
3
Auxiliary boiler enabled if outdoor temperature < parameter 185.
4
Parameters 211 and 213 are used if parameter 219 has value 1 and parameters 212 and 214 are used if parameter 219 has value 0. If the unit is connected to OQLT021 system controller
(parameter 47 set to 2) this parameter is ignored; in this case the maximum (or minimum) setpoint is fixed and corresponds to the maximum (or minimum) value set with the parameter.
5
Replacement if outdoor temperature < parameter 217.
6
Replacement if outdoor temperature > parameter 218.
7
If the system is set for regulation of space heating service using GHP probe (AUX PROBE 1, see parameter 210), regulation of course occurs on the pipe on which the probe is physically
installed. However, it is still important to set this parameter correctly in order to allow the system to apply the correct maximum and minimum setpoint limits.
8
If the system is set for regulation of DHW service using GHP' probe (AUX PROBE 2, see parameter 209), regulation of course occurs on the pipe on which the probe is physically installed.
However, it is still important to set this parameter correctly in order to allow the system to apply the correct maximum and minimum setpoint limits.
9
If the unit is connected to the OQLT021 system controller (optional) this parameter is ignored.
10
This parameter is ignored if parameter 225 is set to 1.
11
This parameter is ignored if the appliance does not directly manage DHW production.
5.3.1
Settings depending on the control system type
▶
If the OQLT021 system controller is used, set parameter 47
to 2.
▶
For other control systems, set parameter 47 to 1 (default).
5.3.2
Settings depending on glycol presence
Before doing these settings, read warnings in Paragraphs
▶
If has been added in the primary water circuit glycol, set pa-
rameter 182 to 1; additionally, the antifreeze function can be
disabled by setting parameter 163 to 0.
▶
If glycol has not been added, set parameter 182 to 0 and
make sure that parameter 163 is set to 1; also, keep the unit
connected to power supply and to gas network, in order to
allow antifreeze function activation.
5.3.3
Operating mode setting (ON/OFF or
modulating)
Before doing this setting, it is strongly suggested to con-
tact Robur technical support.
The operating mode is MODULATING by default. To set the unit
in ON/OFF mode, set parameter 181 to 0
5.3.4
Settings depending on the primary circuit
water pump type
The pump of K18 Simplygas C1 units is normally controlled by
the appliance in variable flow rate mode, both in space heating
and DHW service, with the objective to keep constant tempera-
ture differential (10 K default for both services) between water
return and delivery in the whole range of the unit heat output;
this regulation mode is appropriate for most of the applications.
However it is possible:
▶
To modify temperature differential value required for space
heating and/or DHW service, by setting respectively param-
eters 178 and 184. Before doing this, it is strongly suggested
to contact Robur technical support.
▶
To modify the lower limit of water pump flow rate, by setting
parameter 200. This can be necessary to problems correct
low or nothing water circulation (possibly, only in some parts
of the plant) when the pump is controlled by the system at
a low flow rate.
▶
To set fixed flow rate pump operation, for space heating and/
or DHW service:
Space heating service: set parameter 174 to 0, then set
parameter 176 from 3 (minimum flow rate) to 10 (max-
imum flow rate).
DHW service: perform same settings as above, modify-
ing parameters 183 and 177 respectively.
It is always possible to show the actual flow rate value
measured by the appliance flowmeter. To do this, enter
menu 0 and select parameter 24: the value shown is ex-
pressed in liters/hour.
5.3.5
Settings depending on the installed
temperature probes
5.3.5.1
With OQLT021 system controller
Follow the instructions provided in the system controller
installation manual.
5.3.5.2
With other control systems (OCDS007
chronothermostat or generic external request)
▶
Referring to Figure 3.2.4
p. 22, connect the GHP probe to
AUX PROBE 1 input (see Paragraph 4.8
p. 34) and set pa-
rameter 210 to 1 (probe for space heating regulation).
▶
If the unit directly manages DHW production, it is neces-
sary to install the temperature probe in the DHW buffer
tank (GHP'', detail 12 in Figure 3.2
p. 23) and connect it to
the AUX PROBE 3 input (Paragraph 4.8.3
p. 35), assigning
the value 2 (DHW buffer tank probe) to parameter 238 ac-
cordingly. It must be suitably installed (detail 10 in Figure
3.2
p. 23) and connected also the three-way diverter valve
(Paragraph 4.5
p. 32). In the absence of the GHP'' probe the
K18 Simplygas appliance will behave as if DHW production is
