Electrical Connection - Riello NexPolar Series Installation And Technical Service Instructions

INSTALLATION
PoSITIoN ElECTrICal CoMPoNENTS
X1 Terminal block for power
connections
X2 Terminal block for auxiliary
connections
A001 Variable speed drive
A002 Main electronic board
A2 Control panel
BP1 Low pressure probe
CM Compressor
EP90 Circulation pump

2.13 Electrical Connection

The NexPolar unit leaves the factory completely wired, and only re-
quires a connection to the electrical power grid, the installation of
a padlockable disconnecting switch, and connections to any acces-
sory components.
In order to access the control panel's terminal blocks:
— set the system's main switch to its "OFF" position, and the
device's main switch to its "0" (off) position
O N
O F F
— unscrew the fastening screws
— remove the side panel
FM1 Fan motor
FM2 Fan motor
FR90 Circulation pump thermal relay
FT1 Compressor casing thermostat
KM90 Circulation probe
PMV1 Expansion valve electronic
PMV2 Expansion valve electronic
QS100 Main disconnect switch
RT1 Delivery temperature probe sys-
tem
— route the power cable through the cable gland and fasten it
— route the cables for connecting the auxiliary components
through the cable glands and fasten them
24
SP1F High pressure-switch
TC Transformer
TD Delivery temperature probe fail-
ure
LT Finned coil temperature probe
TS Suction temperature probe
YV21 2-way solenoid valve
YV41 Cycle reversal valve