Outdoor Unit Option Switch Settings - Samsung AM080FXWANR Service Manual

Key Options

8-3 Outdoor unit option switch settings

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