Daikin FXAQ-M Series, Engineering Data

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EDUS39-600-F6 Installation
FXAQ-M 37
NOTE
1. A single switch can be used to supply power to units on the same system. 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 recesses 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 Section 7: ELECTRICAL WIRING
WORK
(3) Remove the service lid.
(4) Add second remote controller (slave) to the terminal
block (6P in Figure 22) 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.
8-4 COMPUTERIZED 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).
(2) Actuation
•
The following table explains FORCED OFF and ON/OFF OPERATIONS in response to Input A:
Wire specification
2 conductor, stranded copper, non-shielded, PVC or vinyl
jacket
Gauge AWG18
Length Max. 328 ft. (100 m)
External terminal
Contact must ensure the minimum
applicable load of 15V DC, 10 mA.
FORCED OFF ON/OFF OPERATION
Input “ON” stops operation (impossible by remote controllers). Input OFF
→
ON turns ON unit.
Upper part of
remote controller
Lower part of
remote controller
Insert the screwdriver here
and gently work off the
upper part of the remote controller.
Fig. 28
S
M
S
S
M
Remote
controller
PC board
(Factory setting)
(Only one remote
controller needs
to be changed if
factory settings
have remained
untouched.)
Fig. 29
Input A
Fig. 30
F2 T1 T2
FORCED
OFF