Mitsubishi Electric SEZ-KD12NA4R1.TH Installation Manual page 13

8. Electrical work
[Fig. 8-2-1] (P.5)
A Screw holding cover (2pcs)
B Cover
[Fig. 8-2-2] (P.5)
A Terminal block box
B Knockout hole
C Remove
[Fig. 8-2-3] (P.5)
A Use conduit to keep the weight of the cable and external force from being applied to the
power supply terminal connector.
B Indoor/outdoor unit connecting cable
C Conduit
D Terminal block box
E Knockout hole (for indoor/outdoor unit connecting cable)
F Washer (accessory)
G Tensile force
H Use ordinary bushing
I Remote controller cable
[Fig. 8-2-4] (P.5)
A Terminal block for indoor/outdoor unit connecting
B Terminal block for remote controller
C Indoor/outdoor unit connecting cable
D Remote controller cable
• Perform wiring as shown in the diagram to the lower left. (Procure the cable lo-
cally.)
Make sure to use cables of the correct polarity only.
[Fig. 8-3] (P.6)
A Indoor terminal block
B Ground wire (green/yellow)
C Indoor/outdoor unit connecting cable 3-core 1.5 mm
D Outdoor terminal block
E Power supply cord
1 Indoor/outdoor unit connecting cable 3-core 1.5 mm
245 IEC 57.
2 Indoor terminal block
3 Outdoor terminal block
4 Always install an ground wire (1-core 1.5 mm
5 Remote controller cable
Wire No ¥ size (mm ) : Cable 2C ¥ 0.3
2
Accessory wire of remote controller
(wire length : 10 m [32 ft], non-polar. Max. 500 m [1640 ft])
6 Wired remote controller
7 Power supply cord
• Connect the terminal blocks as shown in the diagram below.
Caution:
• Conduct electrical work properly.
• Firmly tighten the terminal screws to prevent them from loosening.
• After tightening, pull the wires lightly to confirm that they do not move.
8.3. Remote controller
8.3.1. For wired remote controller
1) Installing procedures
(1) Select an installing position for the remote controller.
The temperature sensors are located on both remote controller and indoor unit.
s Procure the following parts locally:
Two piece switch box
Thin copper conduit tube
Lock nuts and bushings
[Fig. 8-4] (P.6)
A Remote controller
B Required clearances for the remote controller
C Installation pitch
(2) Seal the service entrance for the remote controller cord with putty to prevent pos-
sible invasion of dew drops, water, cockroaches or worms.
[Fig. 8-5] (P.6)
A For installation in the switch box:
B For direct installation on the wall, select one of the following:
• Prepare a hole through the wall to pass the remote controller cord (in order to run the remote
controller cord from the back), then seal the hole with putty.
• Run the remote controller cord through the cut-out upper case, then seal the cut-out notch
with putty similarly as above.
C Wall
D Conduit
E Lock nut
F Bushing
2 [AWG 16] or more
2 [AWG 16] or more, following Design
2
[AWG 16]) longer than other cables
G Switch box
H Remote controller cord
I Seal with putty
J Wood screw
B-1. To lead the remote controller cord from the back of the controller:
B-2. To run the remote controller cord through the upper portion:
(3) For direct installation on the wall
2) Connecting procedures
1 Connect the remote controller cord to the terminal block.
[Fig. 8-6] (P.6)
A To the terminal block on the indoor unit
B TB6 (No polarity)
2 Set the dip switch No.1 shown below when using two remote controller's for the
same group.
3) Selecting the remote controller function
If two remote controllers are connected, set one to "Main" and the other to "Sub". For
setting procedures, refer to "Function selection of remote controller" in the operation
manual for the indoor unit.
8.4. Function settings (Function selection via the re-
mote controller)
Refer to the manual that came with the remote controller for setting procedure and
operation method.
8.4.1 Function setting on the unit (Selecting the unit functions)
1) Changing the external static pressure setting [Fig. 8-7] (P.6)
• Be sure to change the external static pressure setting depending on the duct and
the grill used.
1 Go to the function setting mode.
Switch OFF the remote controller.
Press the A and B buttons simultaneously and hold them for at least 2
seconds. FUNCTION will start to flash.
2 Use the C button to set the refrigerant address (3) to 00.
3 Press D and [--] will start to flash in the unit number (4) display.
4 Use the C button to set the unit number (4) to 01-04 or AL.
5 Press the E MODE button to designate the refrigerant address/unit number.
[--] will flash in the mode number (1) display momentarily.
6 Press the F buttons to set the mode number (1) to 08.
7 Press the G button and the current set setting number (2) will flash.
Use the F button to switch the setting number in response to the external static
pressure to be used.
External static Setting no. of mode
pressure
05 Pa (0.02 in.WG)
15 Pa (0.06 in.WG)
(before shipment)
35 Pa (0.14 in.WG)
50 Pa (0.20 in.WG)
8 Press the MODE button E and mode and the setting number (1) and (2) will
change to being on constantly and the contents of the setting can be confirmed.
9 Press the FILTER A and TEST RUN B buttons simultaneously for at least two
seconds. The function selection screen will disappear momentarily and the air
conditioner OFF display will appear.
0 To set the static pressure at 5Pa (0.02 in.WG), repeat steps 3 to 9. (Set the
mode number to 10 for step 6.)
2) Other functions
1 Select unit number 00 for the settings. (Settings for all indoor units)
Refer to Function table 1.
2 Select unit number 01 to 04 or AL for the settings. (Settings for each indoor unit)
To set the indoor unit in the individual system, select unit number 01.
To set each indoor unit of two, three or four indoor units, which are connected
when these units are simultaneously in operation, select unit number 01 to 04.
To set all indoor units of two, three or four indoor units which are connected when
these units are simultaneously in operation, select AL.
Refer to Function table 2.
Setting no. of mode
no. 08 no. 10
1 2
1 1
1
2
1
3
13