ENGLISH-89
0
2
INST
ALLING
THE
PRODUC
T
AM
✴✴✴
HXWAF
✴
/ AM
✴✴✴
HXWAJ
✴
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
Off
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
Off
Disable maximum capacity restriction for
cooling operation
-
K7
K8
Selecting outdoor unit address
On
On
Outdoor unit address: No. 1
Main unit
On
Off
Outdoor unit address: No. 2
Sub unit 1
Off
On
Outdoor unit address: No. 3
Sub unit 2
Off
Off
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 (17.6 °F)]
Minimum temperature of entering water
-5 °C (23 °F)
OFF
ON
Anti-freeze circulation [freezing point of anti-
freeze must be below -15 °C(5 °F)]
Minimum temperature of entering water
-10 °C (14 °F)
❋
Maintain appropriate concentration level of anti-freeze according to SW58 switch setting. (Refer to ‘Cooling water
management ’ on page 118)
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