Electrical Wiring; Caution - LG Multi V IV PRHR041 Installation Manual

Penetrations
Inner wall (concealed) Outer wall
D
C
A
B
Floor (fireproofing) Penetrating portion on fire
limit and boundary wall
D
F
G
B
Ⓐ Sleeve
Ⓑ Heat insulating material
Ⓒ Lagging
Ⓓ Caulking material
Ⓔ Band
Ⓕ Waterproofing layer
Ⓖ Sleeve with edge
Ⓗ Lagging material
Ⓘ Mortar or other incombustible caulking
Ⓙ Incombustible heat insulation material
When filling a gap with mortar, cover the penetration part with steel plate so
that the insulation material will not be caved in. For this part, use incom-
bustible materials for both insulation and covering. (Vinyl covering should not
be used.)

ELECTRICAL WIRING

Caution

- Follow ordinance of your governmental organization for technical
standard related to electrical equipment, wiring regulations and guid-
ance of each electric power company.
WARNING
!
Be sure to have authorized electrical engineers do the electric
work using special circuits in
accordance with regulations and this installation manual. If power
supply circuit has a lack of
capacity or electric work deficiency, it may cause an electric shock
or fire.
- Install the Outdoor Unit communication cable away from the power
source wiring so that it is not affected by electric noise from the power
source. (Do not run it through the same conduit.)
- Be sure to provide designated grounding work to Outdoor Unit.
CAUTION
!
Be sure to correct the outdoor unit to earth. Do not connect ground
wire to any gas pipe, liquid pipe, lightening rod or telephone earth
line. If earth is incomplete, it may cause an electric shock.
- Give some allowance to wiring for electrical part box of Indoor and
Outdoor Units, because the box is sometimes removed at the time of
service work.
- Never connect the main power source to terminal block of communi-
cation cable. If connected, electrical parts will be burnt out.
- Use 2-core shield cable for communication cable.(
ure below) If communication cable of different systems are wired
with the same multiplecore cable, the resultant poor transmitting and
receiving will cause erroneous operations. (
below)
- Only the communication cable specified should be connected to the
terminal block for Outdoor Unit communication.
Outer wall (exposed)
E
B
A
I
Roof pipe shaft
I
G
D
B
H
A
1m 1m
mark in the fig-
mark in the figure
Outdoor Unit
B
Outdoor Unit
J
Outdoor Unit
Outdoor Unit
Outdoor Unit
Master Slave1
Outdoor Unit
Master Slave1
Outdoor Unit
Master Slave1
Outdoor Unit
Master Slave1
Indoor Indoor
Unit Unit
Remote
control
Indoor Indoor
Unit Unit
Remote
control
2-Core Shield Cable
Indoor Indoor
Unit Unit
Remote Remote
control control
Indoor Indoor
Unit Unit
Remote Remote
control control
Multi-Core Cable
Slave2
Indoor Indoor
Unit Unit
Remote Remote
controller controller
Slave2
Indoor Indoor
Unit Unit
Remote Remote
controller controller
2-Core Shield Cable
Slave2
Indoor Indoor
Unit
Remote
controller
Slave2
Indoor Indoor
Unit
Remote
controller
Multi-Core Cable
23
Remote
control
Remote
control
Unit
Remote
controller
Unit
Remote
controller