Mitsubishi Electric M Series Installation Manual page 13
Air-conditioners indispensable optional parts branch box hfc utilized r410a, only for r410a outdoor unit/only for indoor use
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Also See for M Series:
- Manual (586 pages) ,
- Installation manual (120 pages) ,
- Service manual (46 pages)
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8. Electrical work
8.3. Switch setting
Dip switch setting (Effective only before turning on the power)
SW1
(Example)
•
When the indoor units are
ON
connected to Indoor unit
OFF
A and C, turn SW1-1 and
1 2 3 4 5 6
SW1-3 to on.
SW4
ON
OFF
1 2 3 4 5 6
7 8 9 10
When connecting the Cylinder or the Hydro box unit to the unit in the house, connect
the air to air system indoor unit connected in the bedrooms to A to C ports and make
the following switch settings below.
Also, after referring to the outdoor unit installation manual, add refrigerant.
Port A to C are available for setting for up to a maximum of 3 rooms.
SW5
Port setting
4
5
6
Off
Off
Off
Not specifi ed
On
Off
Off
Port A
Off
On
Off
Port B
On
On
Off
Port A+B
Off
Off
On
Port C
On
Off
On
Port A+C
Off
On
On
Port B+C
On
On
On
Port A+B+C
Address switch (Effective only before turning on the power)
Actual indoor unit address setting varies in different systems. Refer to the installation manual for the outdoor unit for details on how to make the address setting.
Each address is set with a combination of the settings for the tens digit and ones digit.
(Example)
• When setting the address to "3", set the ones digit to 3, and the tens digit to 0.
• When setting the address to "25", set the ones digit to 5, and the tens digit to 2.
(Example)
• When setting the address of the branch BOX to "3", an address is assigned to each indoor unit starting with Unit A as shown below no matter if each indoor unit is con-
nected. (SW1-1~5 ON)
Indoor Unit A
Address 3
Indoor Unit B
Address 4
Indoor Unit C
Address 5
Indoor Unit D
Address 6
Indoor Unit E
Address 7
• When the address is set to "25" and also 3 indoor units (Unit A, Unit C, and Unit E) are connected. (SW1-1, 1-3, 1-5 ON)
Indoor Unit A
Address 25
Indoor Unit C
Address 26
Indoor Unit E
Address 27
SW4
SW12
Model selection
Address setting
TENS DIGIT
(Example)
•
When the indoor unit is
cooling only system, turn
SW4-5 to on.
Port A
Port A
Ports available
Ports available
Port B
Port B
for setting
for setting
Port C
Port C
Port D
Port D
Port E
Port E
SW11
SW5
Address setting
Indoor unit
setting
ONES DIGIT
Switch
Indoor Unit A
SW1-1
Indoor Unit B
SW1-2
Indoor Unit C
SW1-3
Indoor Unit D
SW1-4
Indoor Unit E
SW1-5
Not used
SW1-6
Switch
OFF
SW4-5
Cooling & Heating system
SW1
Indoor unit
connections
OFF
ON
Not connected
Connected
Not connected
Connected
Not connected
Connected
Not connected
Connected
Not connected
Connected
ON
Cooling only system
13
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