21
Ecotower
COSMOGAS
5 - OPERATION
Figure 5-9 - ECOTOWER Wiring diagram with one heating/cooling circuit, DHW, buffer tank and
a boiler
5.5.1 - Configuration for one heating/
cooling circuit, DHW, a buffer tank and
a boiler
After creating the hydraulic system as shown in Figure 5-8
and the electrical system as shown in Figure 5-9, configure
the appliance as follows:
1.- In the home page of the display, press the “
Settings”
icon
(“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 “12” for cooling or “13” for
heating;
7.- Exit the “WORKING MODE” and select “WATER PUMPS”
menù;
8.- To configure the pump outputs so that the circuits work
according to the status of inputs “12” and “13”, 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 “WATER PUMPS” and select “DHW” menù;
10.- Set the DHW setpoint temperature in “ Setpoint DHW”
parameter;
11.- Exit this menù and enter in “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, select “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 electrical heater “20” 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, the KM3 relay “40”
in Figure 5-9 have priority, which is inside the heat pump);
15.- Access the boiler (Mydens B / Novadens B / Q30B),
disable the outdoor reset and set the heating to a set point
greater than or equal to that of the heat pump as set in the
previous step in point 11.
After this configuration, the unit is able to:
- Domestic hot water production in priority over heating /
cooling;
- Be called in heating by closing contact “13”;
- Be called in cooling by closing contact “12”;
- Call the boiler as a supplement to heating whenever the heat
pump fails to reach the domestic hot water set point within
a certain period of time.
