Installation manual

English 9
1. When using 1 remote controller for 1 indoor unit. (Nor-
mal operation)
2. For group control or use with 2 remote controllers
3. When including BS unit
[ PRECAUTIONS ]
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 or
lightning rods, or crossground with telephones. Improper
grounding could result in electric shock.
9-3
CONTROL BY 2 REMOTE CONTROLLERS (Con-
trolling 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 screw driver 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 remote controller.
(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”.)
Wiring Method (See ‘‘ELECTRIC WIRING WORK’’)
(3) Remove the electric parts box lid
(4) Add remote control 2 (slave) to the terminal block for
remote controller (P
1
, P
2
) in the electric parts box.
(There is no polarity.) (Refer to Fig. 3 and 8-3.)
9-4 COMPUTERISED CONTROL (FORCED OFF
AND ON/OFF OPERATION)
(1) Wire specifications and how to perform wiring
• Connect the input from outside to terminals T1 and T2 of
the terminal block for remote controller.
Wire specification Sheathed vinyl cord or cable (2 wire)
Gauge
0.75 - 1.25 mm
2
Length Max. 100 m
External terminal
Contact that can ensure the minimum appli-
cable load of 15 V DC, 10 mA.
01_EN_3P086156-6X.fm Page 9 Thursday, April 9, 2009 3:01 PM