18
3. When including BS unit
NOTE
1.
A single switch can be used to supply power to units on the same system. However, branch switches and
branch circuit breakers must be selected carefully.
2.
Do not ground the equipment on gas pipes, water pipes, lightning rods or telephone ground wires.
Improper grounding could result in electric shock.
8-3 CONTROL BY 2 REMOTE CONTROLLERS (CONTROLLING 1 INDOOR UNIT BY
2 REMOTE CONTROLLERS)
•
When using 2 remote controllers, one must be set to “MAIN” and the other to “SUB”.
MAIN/SUB CHANGEOVER
(1)
Insert a screwdriver into the recess between the
upper and lower part of remote controller, and
working from the 2 positions, pry off the upper part.
The remote controller PC board is attached to the upper
part of the remote controller.
(Refer to Fig. 28)
(2)
Turn the
MAIN/SUB changeover
switch on one of the
two remote controller PC boards to “S”.
(Leave the switch of the other remote controller set to
“M”.)
(Refer to Fig. 29)
Wiring Method
(See ‘‘7.ELECTRIC WIRING WORK’’)
(3)
Remove the service lid.
(4) Add remote control 2 (slave) to the terminal block
(6P) for remote controller (P
1
, P
2
) in the electric
parts box.
(There is no polarity.) (Refer to Fig. 26 and section
7-3 for the wiring size.)
Fig. 28
Fig. 29
