Riello KV/200 20 ISC Solar Installation And Maintenance Manual page 26

- Open the cover (D) to access the internal terminals and make the connections as shown in the diagram below.
CR
M4
SOLAR COLLECTOR TEMPERATURE SENSOR (SColl)
b
A resistance (R) is connected to the terminals
of the extension cable (C) to allow the boiler to
start up if no solar temperature sensor is used.
If the installation uses a solar temperature sensor,
remove the resistance (R) and connect the sensor
to the terminals (M).
b
The following instructions are mandatory:
1 Use a multi-pole magnetic thermal trip switch and
disconnector conforming to IEC-EN standards (with a
contact gap of at least 3 mm).
2 Respect the L (Phase) - N (Neutral) polarity.
3 Use cables with a cross section of 1.5 mm
complete with end terminals.
4 Always refer to the electrical wiring diagrams in this
manual when performing any electrical work.
5 Ensure that an efficient ground connection is pro-
vided.
a
It is strictly forbidden to use fuel and/or water pipes
to ground the appliance.
The manufacturer declines all responsibility for dam-
age caused by failing to ground the appliance ade-
quately or by failure to respect the wiring diagrams
provided in this manual.
26
INSTALLER
D
TA
SE
nero
TBT/ACP
M3a
M5
M4a
or more,
2
Key
CR Remote control
SE Outdoor temperature sen-
sor
TA Room thermostat
F Fuse 3.15A F (fast)
TBT Low temperature thermostat
F
APC Condensate pump alarm
M3
M3÷M5 Connection terminals
C
R
2
1 3
0 4
bar
M
60
40 80
20 100
0 120
°C