Daikin FXAQ07MVJU Installation Manual page 20

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
parts box.
(There is no polarity.) (Refer to Fig. 26 and section
7-3 for the wiring size.)
8-4 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 (6P).
Input A
F2 T1 T2
FORCED
OFF
Fig. 30
19
, P ) in the electric
1 2
Wire specification
Gauge
Length
External terminal
Insert the screwdriver here
and gently work off the
upper part of the remote controller.
S S
(Factory setting)
M
(Only one remote
controller needs
S
M
to be changed if
factory settings
have remained
untouched.)
Sheathed vinyl cord or cable (2 wire)
AWG18-16
Max. 328 ft.
Contact that can ensure the minimum
applicable load of 15V DC, 10 mA.
Upper part of
remote controller
Lower part of
remote controller
Fig. 28
Remote
controller
PC board
Fig. 29