23
ecotwin
COSMOGAS
5 - OPERATION
Figure 5-11 - Wiring diagram with double heating/cooling circuit, DHW, buffer tank and boiler
5.6.1 - Configuration for double heating/
cooling circuit, DHW, a buffer tank and
a boiler
After creating the hydraulic system as shown in Figure 5-10
and the electrical system as shown in Figure 5-11, 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 select “WATER
PUMPS”;
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”;
d.- Select “P1 with high temp. demand”;
e.- Select “P2 for heating operation” e se necessita metterla
anche a “P2 for cooling operation”.
9.- Exit the “WATER PUMPS” menù and select “DHW”;
10.- Set the DHW setpoint temperature in “ Setpoint DHW”
parameter;
11.- Exit this menù and select “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 “ZONE 2”:
a.- Select “Zone 2”, set the “Set temp. for cooling (fix flow
water temperature)” e “Set temp. for heating (fix flow
water temperature)”;
b.- Select “Mixing valve”;
c.- Remove the check from the “Heating curve 2 (HC2)” line
if you want the regulation at fixed point, or add the check
and complete the following outdoor reset parameters as
described in section 8.2.1;
13.- Exit this menù and select “BACK-UP”;
14.- If present, remove the check from “Backup heating
sources for sanitary hot water”;
15.- Select “Priority for backup heating sources (HBH)” and
set it to “Higher than AH” (in this way, the resistance “35”
in Figure 6-22 have priority, which is inside the heat pump);
16.- Exit this menù and select “ ELECTRIC LOCK”;
17.- Enable the parameter “Heating ECO operation”;
18.- Now, access the boiler (Mydens B / Novadens B / Q30B)
and set the domestic hot water to a set point 5 ° C lower
than the domestic hot water set point as set in the previous
step in point 10;
