22
Heating of the second circuit
Boiler is designed to supply and control two heating circuits (e.g. radiators and under-floor circuit). To control the
second circuit (e.g. under-floor) the three-way valve has to be connected to ZIO board.
The desired temperature of the second circuit is set on
„
24h temperature
”
page. The
„
N
”
parameter is set on
„
Circuit
#2
”
page. (fig.30). To set the heating circuits go to page
„
Extended Menu
”
.
30
Fig.30 Second circuit
To change
„
N
”
parameter value of second circuit press
or
. To save your changes press
.
Push- buttons specification:
– return to the main view
– save changes
– go to the previous page
– go to the next page
– to increase the value
– to decrease the value
Instruction for the user
Important: To control the second circuit the circuit must be equipped with the following devices: mixing valve,
WE-008 Kospel temperature sensor and the second circuit pump (fig.6). Devices connection details:
Mixing valve - ZTM entry
Sensor - Tco2 entry
Pump - Pump 2 entry on ZIO22 board
The sensor measures temperature of CH medium on the second circuit inlet (after the mixing valve). For the mixing
valve connection details see fig.4.
„
ZTM
”
contacts of ZIO board enables controlling the mixing valve. The mixing
valve has to be fixed as shown in fig.6
Central heating parameters
To switch over from the
„
Main View
”
to
„
Heating data
”
press a
.
Fig.31a Heating data (EKCO.M1z)
31a
„
Heating data
”
display view shows (in sequence): boiler inlet temp, boiler outlet temp, desired temp - in brackets,
power (kW) with which the boiler currently heats, flow rate (litres/minute)
EKCO.TM model measures the outlet temperatures from both heating boxes (fig.31b).
Push- buttons specification:
– return to the main view
– not applicable
– return to the main view
– return to the main view
– not applicable
– not applicable
31b
Fig.31b Heating data (EKCO.TM)
