ENGLISH-71
02 INSTALLING THE PRODUCT
Setting outdoor unit option switch and key function
Setting outdoor unit option switches : A TYPE
SW58
K21
K22
K21
K22
TEN ONE MCU
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
If you install HR products, you must match the address between the MCU and the indoor unit.
Switch Setting Function Remarks
SW51 /
SW52
Setting total number of installed indoor unit
SW51: Tens digit, SW52: Units digit
Setting can be done from the main outdoor unit
only (sub unit: setting is unnecessary)
Ex) When 12 indoor units are installed SW51:1,
SW52:2
SW53
K5
On H/P(Heat Pump) System Connect Liguid pipe and High pressure gas pipe
O HR(Heat Recovery) System Close outdoor unit's heatpump valve
K6
On
Enable maximum capacity restriction for cooling
operation
Restrict excessive capacity increase when
operating indoor units with small capacity
O
Disable maximum capacity restriction for cooling
operation
-
K7 K8 Selecting outdoor unit address
On On Outdoor unit address: No. 1 Main unit
On O Outdoor unit address: No. 2 Sub unit 1
O On Outdoor unit address: No. 3 Sub unit 2
O O Outdoor unit address: No. 4 Sub unit 3
SW57 Setting total number of connected MCU
Setting can be done from main unit only
Ex) When 3 MCUs are installed SW57:3, SW52:2
SW58
K21 K22 Selecting type of circulating water
ON ON Water circulation -
ON OFF
Anti-freeze circulation (freezing point of anti-freeze
must be below -8 °C)
Minimum temperature of entering water -5 °C
OFF ON
Anti-freeze circulation (freezing point of anti-freeze
must be below -15 °C)
Minimum temperature of entering water -10 °C
Maintain appropriate concentration level of anti-freeze according to SW58 switch setting. (Refer to 'Cooling water
management' on page 103)
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