LG PRHR Series, Installation Manual, Page: 8 / 15

8 HR Unit
Installation
Insulate the connected pipes completely(all thermal insulation must comply with local requirement)
Thermal Insulation
Wiring Connection
Refrigerant pipe
(Local supply)
Thermal insulator for refrigerant pipe
(Local supply)
Overlap with thermal
insulator for piping
Make sure that there is no
Thermal insulator for
refrigerant pipe(Local supply)
clearance here
CAUTION:
Insulate completely unconnected pipes as shown in the Figure.
Not connected pipe
Always seal up the
tip of unused pipe by brazing
Thermal insulator for
refrigerant pipe(Local supply)
Make sure that there is no
clearance here
Connect the wires to the terminals on the control board individually according to the outdoor unit connection.
• Ensure that the color of the wires of outdoor unit and the terminal No. are the same as those of HR Unit respectively.
Terminal Block HR Unit
1(L) 2(N) 3 4
HR UNIT POWER INPUT
Master
Outdoor Unit
SODU B SODU A IDU B IDU A INT B INT A
WARNING : Make sure that the screws of the terminal are free from looseness.
Wiring Connection