10
. Electrical work
Fig. -1
SW502:
Match the setting of the interface to the mode of the indoor unit to be connected. To do so, refer to Table 3 and check the mode on the installation manual for the indoor unit
to be connected.
SW501
Table 3
SW No.
Mode
OFF
ON
Remarks
No.1
Cooling only type/Heat pump type
Heat pump type
Cooling only type
Set the mode in accordance with the installation manual for the
indoor unit.
No.2
Auto mode
Not available
(setting No. 3 disabled)
Available
(setting No. 3 enabled)
Heat pump type: Set to ON.
Cooling only type: Set to OFF.
No.3
Available (unit)
Available
(remote controller)
Set to OFF.
No.4
Fan speed
4 speeds
3 speeds
(2-speed model set ON)
When operating a 2-speed model with the 3-speed setting (ON),
the MA remote controller display will indicate 3 fan speeds. The
table below shows the displays and the actual outputs at that time.
Display
Meaning
Indoor unit output
Low speed
Low speed
Medium speed
High speed
High speed
High speed
No.5
Vane
Available
Not available
Set it in accordance with the installation manual for the indoor unit.
No.6
Swing
Available
Not available
Set it in accordance with the installation manual for the indoor unit.
No.7
Not in use
–
–
Permanently set to OFF.
No.8
Fan mode
Not available
Available
Set to ON.
6.5.2 Examples of Available System Settings
The following table shows the examples of available system settings.
No.
System
System diagram
Remarks
1
Connecting MA remote con-
troller directly to indoor unit
The contents that appear on the displays
may differ between the MA remote control-
ler that is connected to the indoor unit and
the MA remote controller that is connected
to the interface unit.
<Examples>
• Fan speed
• Filter sign
2
Using wireless remote con-
troller on indoor unit
1
Outdoor unit
2
Indoor unit
3
Interface (MAC-397IF-E)
4
MA remote controller (PAR-21MAA)
5
Wireless remote controller
6
Connect terminal of MA remote controller
each other.
A
: Refrigerant address “0”
B
: Refrigerant address “1”
C
: Refrigerant address “2”
D
: Refrigerant address “3”
Use the canvas duct for connecting the indoor unit and the duct.
Use fire-proof material for the duct parts.
Make sure that the duct has sufficient heat insulation.
A
Electrical parts box
B
Canvas duct (procure locally)
C
Air intake duct flange
D
Air outlet duct flange
E
Air intake duct (procure locally)
F
Air outlet duct (procure locally)
G
Air filter (procure locally)
H
Air outlet grille (procure locally)
I
Air intake grille (procure locally)
J
Ceiling
K
Drainage pan
M
Air intake
N
Air outlet
O
Leave clearance to prevent short cycle.
P
Indoor unit
Note:
• An outlet duct of 850 mm or more is needed for construction.
• Connect the main body of the air conditioner and the duct so that their
potential is equal.
•
The standard external static pressure should be 12.7 mmAq (124 Pa). (Only PEH)
• Connect an earth cable from the air intake duct
E
to the earth terminal.
Then, connect another earth cable from the earth terminal to the air outlet
duct
F
.
. Duct work (Fig. -1)
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