19
ecotwin
COSMOGAS
5 - OPERATION
Figure 5-7 - Wiring diagram with one heating/cooling circuit, DHW and a buffer tank
5.4.1- Configuration for one heating/cooling
circuit, DHW and a buffer tank
After creating the hydraulic system as shown in Figure 5-6 and the
electrical system as shown in Figure 5-7, configure the appliance as
follows:
1.- In the home page of the display, press the “
Settings”
icon ( detail
“H” of Figure 8-1);
2.- Enter the “USER” menù (section 8.2.8) and select
“Permission level”
;
3.- Enter the password “87654321” for the Installer level and press OK;
4.- Go back and enter the “WORKING MODE” menù (section 8.2.9);
5.- Using the green tick, enable the unit to produce domestic hot water,
heating and/or cooling;
6.- Go to second page of the menù and set
“Heating / cooling switch”
to
“External signal control”
. Switching takes place only via remote
command “17” for cooling or “18” for heating;
7.- Exit the
“WORKING MODE”
menù and press to the “WATER
PUMPS” icon;
8.- To configure the pump outputs so that the circuits work according
to the status of inputs “17” and “18”, it is necessary:
a.- Select “Working mode of circulation pump P0” and set it to
“OFF with compr.”;
b.- Go to the next page and put the check mark to “Buffer tank”,
enabling it;
c.- Put the check mark in “P1 for heating operation
”
and, if
previously enabled, also enable “P1 for cooling operation”;
9.- Exit from “WATER PUMPS” and select “DHW”
;
10.- Set the DHW setpoint temperature in “Setpoint DHW” parameter;
11.- Exit this menù and enter to
“ZONE 1”
menù:
a.- If the cooling function is enabled, select “Set temp. for cooling
(fix flow water temperature)” and set the setpoint temperature;
b.- If you want to adjust the heating temperature via outdoor reset,
tick “Heating (HC1)” and complete the following parameters as
described in section 8.2.1;
c.- If the “Heating (HC1)” has not been selected, set the appropriate
set point temperature on the “Set temp. for heating (fix flow water
temperature)”;
12.- Exit this menù and select
“BACK-UP”
;
13.- Tick on
“Backup heating sources for sanitary hot water”
so that the
heat pump can call resistance “9” if it is unable to bring the domestic
hot water tank to the required temperature within a certain number
of minutes;
14.- Select “Priority for backup heating sources (HWTBH)” and set it
to
“Higher than AH”
(in this way, resistance “9” is given precedence
and then resistance “35”, shown in Figure 6-22, which is inside
the heat pump);
15.- In the same way and with the same criterion you can choose
the integration of alternative sources to heating.
After this configuration, the unit is able to:
- Domestic hot water production in priority over heating / cooling;
- Be called in heating by closing contact “18”;
- Be called in cooling by closing contact “17”;
- Call the integrative resistance “9” (Figure 5-4) or the internal resistance
“35” (Figure 6-22) whenever the appliance fails to reach the domestic
hot water and / or heating set point within a certain period of time.
