27
I3
I1
I2
20mm
L= 2 meters) and measured by the
I1
water temperature probe, exceeds the selected one DT ON=7°C (PR12). The PUFFER is OFF when
the difference of the temperature is down of the selected one DT OFF=5°C (PR13).
See Chapter
.
5.3.4. BOILER and PUFFER Activated
When the BOILER and the PUFFER are together ON, in this case through the three-ways valve activation, the digital electronic device
controls the activation of the BOILER before and after the PUFFER.
5.4. ELECTRIC CONNECTION
EN - KEY
GND
Yellow / Green
I1
Regulator Probe
I2
PUFFER Probe
I3
BOILER Probe
I4
/
N
POWER SUPPLY - Blue
Ph
POWER SUPPLY - Brown
V1
Circulator - Out 1 - Brown
V2
Circulator - Out 2 - Brown
V3
3-ways valve - Out 3 - Brown
The control unit and the plant must be installed and connected by
authorized personnel according to the standards in force.
All operations must be performed with mains power disconnected.
Connect the feeding cable of the switchboard with an electronic bipolar
switch respecting at least a 3 mm distance between the contacts. Power
supply 230V~ 50 / 60 Hz, it is necessary to provide for the correct connection
t o
the grounding plant.
WARNING
: The COMMAND must be connected to the mains with a differential line cut-off switch according to the regulations in force.
Correct operation of the appliance is only guaranteed for pumps and valves approved by La Nordica. La Nordica is not liable for any
improper use of the appliance.
5.4.1. TECHNICALS SPECIFICATIONS
POWER SUPPLY
230 V~ +15-10% 50/60Hz
POWER INPUT
Max 2VA
MAX PROBE TEMPERATURE
120°C
OPERATING TEMPERATURE
0 – 60°C
OVERALL DIMENSIONS
120 x 74 x 51 (3 gang switch box)
CONTAINER
RAL9001 faceplate, BLACK frame
INDEX OF PROTECTION
IP40
PUMP CONTROLLED
Max 400 W
VALVE CONTROLLED
Max 400 W
PUMP CONTROL RANGE
10 – 78°C
VALVE CONTROL RANGE
10 – 78°C
