Setting Outdoor Unit Option Switch And Key Function - Samsung AM***MXWA Series Installation Manual

Setting outdoor unit option switch and key function

Setting outdoor unit option switches : A TYPE
K21 K22
❋ ❋ If you install HR products, you must match the address between the MCU and the indoor unit .
Switch Setting
Setting total number of installed indoor unit
SW51 /
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
SW53
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 (freezing point of anti-freeze
SW58
On OFF
must be below -8 °C)
Anti-freeze circulation (freezing point of anti-freeze
OFF On
must be below -15 °C)
❋ ❋ Maintain appropriate concentration level of anti-freeze according to SW58 switch setting . (Refer to 'Cooling water
management' on page 103)
Function
Selecting outdoor unit address
Selecting type of circulating water
ENGLISH-71
SW58
K21 K22
TEN ONE
Remarks
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
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  SW57: 3, SW52: 2
-
Minimum temperature of entering water -5 °C
Minimum temperature of entering water -10 °C
MCU