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37-EN
38-EN
9
Address setting
CAUTION
• Complete all electric wiring before setting the addresses.
• To set the addresses correctly, the indoor units must be energize before the outdoor units are energized. Failure
to follow this procedure will result in an “E19” check code being displayed on the outdoor unit control board.
• It normally takes 5 minutes to automatically address one refrigerant line, however this process could take as
long as 10 minutes.
• Simply energizing the system components does not initiate the address process.
• It is not required to run the unit during the address process.
• The address process can be done automatically or manually.
WARNING
• Electrical shock hazard - the electrical control
box contains high voltage parts. All
adjustments for address setting should be
made through the access cover.
Do not remove the electrical control box
cover.
• After completing the address setting the
access cover should be closed and secured
using the screw provided.
■
Automatic address setting
Without central control
use Address setting procedure 1
or with central control of 1 refrigerant lines (Example 1) :
With central control of 2 refrigerant lines (Example 2) :
use Address setting procedure 2
Example 1
Example 2
When a single refrigerant line is centrally
controlled
When 2 or more refrigerant lines are centrally
controlled
Address setting
procedure
See procedure 1
See procedure 2
Control wiring
diagram
Outdoor
Indoor
Indoor
Indoor
Indoor
Outdoor
Central
control
Remote
control
Remote
control
Remote
control
Central
control
Outdoor
Indoor
Indoor
Indoor
Indoor
Outdoor
Remote
control
Remote
control
Remote
control
Central
control
Access
cover
Electrical control
box cover
Access
cover screw
Screw size and tightening torque
Screw size
Tightening torque
ft•lbs (N•m)
Power supply terminal
M8
4.1 to 4.8 (5.5 to 6.6)
Ground screw
M8
4.1 to 4.8 (5.5 to 6.6)
◆
Precautions when knocking out knockout holes
• After knocking out the hole to the other side, remove the burr, then we recommend you to paint around the edge
with the repair paint to prevent the rusting.
◆
Control wire connection
1. If conduit is required for the control wiring, connect it to the field wiring panel.
2. If conduit is not required, route the control wiring directly through the field wiring panel.
3. Connect all control wiring to the system interconnecting terminal block and connect the shield to the ground
screw.
U1
U3 U4
U2
U5 U6
S
S
TO
INDOOR
UNIT
TO
CENTRAL
CONTROLLER
TO
OUTDOOR
UNIT
SHIELD
SHIELD
U
5
, U
6
: Control wiring between outdoor units
U
3
, U
4
: Central control device
U
1
, U
2
: Control wiring between Indoor/Outdoor units
S: Shield wire earth
Screw size and tightening torque
Screw size
Tightening torque
ft•lbs (N•m)
control wire terminal
M4
0.6 to 0.7 (0.80 to 0.96)
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