60
10.1.4 - Connection to an
analog Vcc input
On appliances model 399, 500, 750
and 1000 it is factory supplied the
885IF board that permit installer to
drive the unit via a Vcc input (199
model can be equipped on demand).
To do this, you have to connect the
Vcc supply between terminals 22 and
23 (see Figures 10-4 and 10-5). Also,
the CH mode (parameter 2003 as per
Section 16.14) must be set to 4 value.
Now the heater can start to receive
the analog input Vcc and it will control
the supply temperature under the
rules as explained in Figure 10-3
where:
- if the input voltage is growing up to
1.5V, the heater stay OFF;
- if the input voltage move between 1.5V
and 2.0V the heater start to work
and the supply temperature stay at
the value set on parameter 3018
(Minimum CH setpoint, see Section
21);
- if the inpult voltage move between 2V
and 10V, the supply temperature will
change proportionally between the
Minimum CH setpoint (parameter
3018, see Section 21) and the
Maximum CH setpoint (parameter
3017, see Section 21).
10.1.5 - Connection to a
MODBUS protocol
On appliances model 399, 500, 750
and 1000 it is factory supplied the
885IF board that has an integrated
MODBUS protocol (199 model can be
equipped on demand).
This 885IF board with the MODBUS
protocol can be connected to drive
the unit from a building management
device. Instructions on how to connect
the MODBUS protocol are supplied on
demand.
10 - INSTALLATION - Electrical connections
Figure 10-2 Room thermostat location
Figure 10-3 0-10Vcc analog input algorithm
Summary of Contents for Infinity Energy 2
Page 3: ...3 SAFETY INSTRUCTIONS...
Page 5: ...5 SAFETY INSTRUCTIONS...
Page 132: ...132 17 MAINTENANCE...
Page 136: ...136 19 SPARE PARTS Spare parts...
Page 139: ...139 19 SPARE PARTS 50 48 50 49 53 56 57 55 54 58 47 52 48 52 51 55 52 020010 03 006 199...
Page 162: ...162 22 SEQUENCE OF OPERATION for BOILER...
Page 163: ...163 23 SEQUENCE OF OPERATION for WATER HEATER...
