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6. Refrigerant piping work
[Drainage by gravity]
1. Insert the drain hose (accessory) into the drain port.
(The drain hose must not be bent more than 45° to prevent the hose from breaking
or clogging.)
The connecting part between the indoor unit and the drain hose may be discon-
nected at the maintenance. Fix the part with the accessory band, not be adhered.
2. Attach the drain pipe (O.D. ø32 PVC TUBE, field supplied).
(Attach the pipe with glue for the hard vinyl chloride pipe, and fix it with the band
(accessory).)
3. Perform insulation work on the drain pipe (O.D. ø32 PVC TUBE) and on the socket
(including elbow).
[Fig. 6-12] (P.4) * Drainage by gravity
A Indoor unit
B Pipe cover (30 mm [3/16 in]) (accessory)
C Tie band (accessory)
D Band fixing part
E Insertion margin
F Drain hose (accessory)
G Drain pipe (O.D. ø32 PVC TUBE, field supplied)
H Insulating material (field supplied)
I Max. 145 ± 5 mm
7. Duct work
• When connecting ducts, insert a canvas duct between the main body and the duct.
• Use non-combustible duct components.
Caution:
The noise from the intake will increase dramatically if intake A A A A A is fitted
•
directly beneath the main body. Intake A A A A A should therefore be installed as
far away from the main body as possible.
Particular care is required when using it with bottom inlet specifications.
•
Install sufficient thermal insulation to prevent condensation forming on
outlet duct flanges and outlet ducts.
•
To connect the air conditioner main body and the duct for potential equali-
zation.
8. Electrical work
8.1. Power supply
Electrical specification
Input capacity Main Switch/Fuse (A)
Power supply
PEA-A12AA4
(1 phase ~/N, 208/230V, 60Hz
Warning:
• The compressor will not operate unless the power supply phase connection
is correct.
• Grounding protection with a no-fuse breaker (earth leakage breaker [ELB]) is
usually installed for D D D D D .
• The connection wiring between the outdoor and indoor units can be extended
up to a maximum of 50 m [164 ft], and the total extension including the crosso-
ver wiring between rooms is a maximum of 80 m [262 ft].
A switch with at least 3 mm [1/8 in] contact separation in each pole shall be
provided by the air conditioner installation.
* Label each breaker according to purpose (heater, unit etc.).
[Fig. 8-1] (P.5)
A Indoor unit
B Outdoor unit
C Wired remote controller
D Main switch/fuse
E Grounding
F Indoor controller board
G Radio frequency interface for RF thermostat
12
PEA-A18AA4
10
20
6.6. Confirming drain discharge
s s s s s Make sure that the drain-up mechanism operates normally for discharge
and that there is no water leakage from the connections.
• Be sure to confirm the above in a period of heating operation.
• Be sure to confirm the above before ceiling work is done in the case of a new
construction.
1.Remove the water supply port cover on the same side as the indoor unit piping.
2.Fill water into the feed water pump using a feed water tank. In filling, be sure to put
the end of the pump or tank in a drain pan. (If the insertion is incomplete, water may
flow over the machine.)
3.Perform the test run in cooling mode, or turn on the switch SWE on the controller
circuit board. (The drain pump and the fan are forced to operate without any remote
controller operation.) Make sure using a transparent hose that drain is discharged.
SWE
SWE
ON
OFF
ON
4.After confirmation, cancel the test run mode, and turn off the main power. When the
switch SWE has been turned on, turn it off, and attach the water supply port cover
into its original position.
SWE
SWE
ON
OFF
ON
[Fig. 6-13] (P.4)
A Insert pump's end 2 to 4 cm [13/16 to 1-19/32 in].
B Remove the water supply port.
C About 2000 cc
D Water
E Filling port
F Screw
[Fig. 6-14] (P.4)
<Indoor board>
•
Keep the distance between the inlet grille and the fan over 850 mm [33-15/
32 in].
If it is less than 850 mm [33-15/32 in], install a safety guard not to touch the
fan.
[Fig. 7-1] (P.5)
A Air inlet
B Air outlet
C Access door
D Ceiling surface
E Canvas duct
F Air filter
G Inlet grille
8.2. Indoor wire connection
Work procedure
1.Remove 2 screws to detach the electric component cover.
2.Route each cable through the wiring intake into the electric component box. (Pro-
cure power cable and in-out connecting cable locally and use wired remote control
cable supplied with the unit.)
3.Securely connect the power cable and the in-out connecting cable and the wired
remote control cable to the terminal blocks.
4.For radio frequency interface
Connect the electric wires securely to the CN105 (RED) of indoor controller board.
Connect the electric wires securely to the corresponding terminals.
5.Secure the cables with clamps inside the electric component box.
6.Attach the electric component cover as it was.
• Fix power supply cable and indoor/outdoor cable to control box by using buffer
bushing for tensile force. (PG connection or the like.)
Warning:
• Attach the electrical part cover securely. If it is attached incorrectly, it could
result in a fire, electric shock due to dust, water, etc.
• Use the specified indoor/outdoor unit connecting wire to connect the indoor
and outdoor units and fix the wire to the terminal block securely so that no
stress is applied to the connecting section of the terminal block. Incomplete
connection or fixing of the wire could result in a fire.
[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
OFF
OFF
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