Connection To An Analog 0-10Vcc Input; Connection To A Modbus Protocol; Connection To A Lwco Device; Alarm Contact - RBI Infinite Energy2 IW199 Installation And Operation Instructions Manual

9 - INSTALLATION - Electrical connections
9.1.2 - Connection to an
analog 0-10Vcc 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 0-10Vcc input (199
model can be equipped on demand).
To do this, you have to connect the
Vcc supply between terminals 22
and 23 (see Figure 9-3 or 9-4). Also,
parameter 2003 as per Section 15.11
must be set to value of 4.
Now the appliance can start to receive
the analog 0-10 Vcc input and it will
control the supply temperature under
the rules as explained in Figure 9-2,
where:
- if the input voltage is growing up to
1.5V, the appliance stays OFF;
- if the input voltage move between 1.5V
and 2.0V the appliance start to work
and the supply temperature stay at
the value set on parameter 3018
(Minimum setpoint, see Section 20);
- if the inpult voltage move between 2V
and 10V, the supply temperature will
change proportionally between the
Minimum setpoint (parameter 3018,
see Section 20) and the Maximum
setpoint (parameter 3017, see Section
20).
Maximum
Setpoint
(Par.3017)
Minimum
Setpoint
(Par.3018)
1.0
ON/OFF
OFF
Hysterese
Figure 9-2 - 0-10Vcc analog input algorithm
9.1.3 - 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.
9.1.4 - Connection to a
LWCO device
CAUTION!!!
sensor device. To use water flow
switch ask engineering wiring
diagram to the manufacturer.
Install LWCO device as per engeneering
method. Connect LWCO terminals to
103 and 104 appliance terminals (see
Figures 9-3 or 9-4).
WARNING!!!
terminals 103 and 104 containing
line voltage and electrical shock
hazard will exist.
2 3 4 5 6
1.5
ON

9.1.5 - Alarm contact

Alarm contact works only in presence of
the 885 IF board (see Figures 3-3, 3-6
and 3-9, item 13).
Alarm contact does not react in case
a dependent module (burner 2, 3 or 4)
is in error.
Use only LWCO
Appliance
7 8 9
10
53