Electrical data, connections and wiring
Wiring Connections
Electrical supply is connected to the compressor
terminals by Ø 4.8 mm (3/16”) screws. The
maximum tightening torque is 3 Nm. Use a ¼”
ring terminal on the power leads. The compressor
must be connected to earth with the 5mm earth
terminal screw.
The control board comes pre-installed within
the terminal box of full package compressor.
The control board comes with pre-wired liquid
injection valve connection, is used to provide
control of liquid injection valve according to
feedback of discharge temperature sensor.
The discharge gas temperature cable must be
plugged to the discharge temperature sensor
installed on discharge tube by customer.
The control board must be connected to:
• a power supply of the appropriate voltage
(230VAC) with a 2 poles 7.62 mm pitch
terminal block (an independent power
supply is recommended).
• a 1/4” fasten earth connection for 230V
supply models.
Plug and unplug connector on board with
electricity is forbidden. Never touch board with
electricity by hand or tool. Cable connected to
control board can not be short circuit or connect
to high voltage.
IP Rating
The compressor terminal box according to IEC529 is IP54 for all models when correctly sized IP54 rated
cable glands are used.
First numeral
, level of protection against contact and foreign object
5
- Dust protected
Second numeral
, level of protection against water
4
- Protection against water splashing
control board power
supply
liquid injection valve
control (pre-wired)
discharge temperature
sensor PT1000
main power supply
Liquid injection valve
control
14
FRCC.PC.022.A4.02
Application Guidelines
