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8.2. Dip switch setting
8.2.1. Capacity settings of indoor units to be controlled
The capacity of indoor units to be controlled is set.
Indoor unit capacity
[kBTU/h (kW)]
SET1-1
18 (5.3)
ON
(factory setting)
24 (7.0)
OFF
30 (8.8)
OFF
36 (10.6)
ON
48 (14.1)
OFF
60 (17.6)
OFF
72 (21.2)
ON
96 (28.1)
ON
144 (42.2)
ON
168 (49.2)
OFF
Not described above
Settings prohibited
8.2.2. Setting digital input signal methods
Select either edge method or
DIP switch SET2-2
pulse method as the external
OFF (factory setting)
inputs signal method.
ON
Make sure that SET2-3 and SET2-4 are always OFF.
8.2.3. Analog external inputs method
• You can select the item to be controlled using analog external inputs from the external
controller (either "Operation temperature" or "Required operation performance").
• Make the DIP switch SET3-1 settings before making the SET3-2 settings.
• Make sure to set a connection status that uses the external controller.
• If SET3-1 is ON, VRF device controls will be disabled.
(i) Analog external inputs
DIP switch SET3-1
ON/OFF
OFF (factory setting)
ON
(ii) Control items
DIP switch SET3-2
The items to be controlled
OFF (factory setting)
are selected according to the
ON
device status that uses the
external controller.
8.2.4. AC (air conditioning.) control settings
Select the AC control format
DIP switch SET3-3
from either "outlet temperature
OFF (factory setting)
control" or "inlet temperature
ON
control".
Make sure that SET3-4 is always OFF.
8.2.5. RB unit bypass circuit feasibility
• If connecting the RB unit and a
general indoor unit 1-to-1 in the
OFF (factory setting)
heat recovery system unit, config-
ure a bypass circuit in the RB unit
ON
when the heat thermostat is OFF.
• Prevents hot air from outlet when the heat thermostat is OFF.
• If the indoor unit is 40kW or 50kW type, the RB unit cannot be connected.
8.2.6. Administrative indoor unit setting
• You can set the DX-kit as the
"administrative indoor unit" from
among multiple indoor units
OFF (factory setting)
(including the DX-kit) connected
using the same refrigerant system
ON
(or RB unit).
• Only one administrative indoor unit can be set using the same refrigerant system (or RB
unit). If forming the remote controller group, set this DIP switch "OFF".
• When connecting the wired remote controller to the DX-kit, set this switch to OFF. (Set
the "Administrative indoor unit setting" with the wired remote controller.)
Make sure to set SET4-1 and SET4-2 to always OFF.
Precautions if using
If the "Administrative indoor unit setting" is "ON" for another
indoor unit connected to the same refrigerant system (or RB
the DX-kit as the
unit), make sure to turn "OFF" that setting. For details, see
administrative indoor
the wired remote controller installation manual.
unit
8.2.7. Remote controller selections
The cable type of wired remote
controller has been selected.
2WIRE (factory setting) 2 wire type
3WIRE
Dip switch setting
SET1-2
SET1-3
SET1-4
OFF
ON
OFF
OFF
ON
ON
OFF
OFF
OFF
OFF
ON
OFF
OFF
OFF
ON
OFF
ON
OFF
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
ON
ON
ON
OFF
OFF
OFF
ON
ON
ON
OFF
ON
ON
Digital input signals format
Edge
Pulse
Analog external inputs
ON/OFF
OFF
ON
Control conditions
Operation temperature
Required operation perfor-
mance
Temperature control position
Outlet temperature control
Inlet temperature control
DIP switch SET4-3
No bypass
With bypass
DIP switch SET4-4
Administrative indoor
unit settings
OFF
ON
DIP switch SW1
Wired remote controller
cable type
3 wire type
8.3. Function setting
• FUNCTION SETTING can be performed with the wired or wireless remote controller.
(The remote controller is optional equipment)
• Refer to the wired or wireless remote controller manual for detailed setting information.
(Set IU AD, REF AD SW to 0)
• Refer to "8.1. Setting the address" for indoor unit address and refrigerant circuit address
SET2-1
settings.
• Turn the power of the indoor unit ON before starting the setting.
* Turning on the power to the indoor units initializes EEV, so make sure the piping air
tight test and vacuuming have been conducted before turning on the power.
* Also check again to make sure no wiring mistakes were made before turning on the
power.
Function details
Filter indicator
11
interval
Filter indicator
13
action
Auto restart
40
Cool Air Pre-
43
vention
Error report
47
target
Switching
functions for
external inputs
60
and external
outputs termi-
nals
Selecting stop
operation dur-
64
ing an external
error
00 Standard
○
Adjust the filter cleaning interval
notification. If the notification is too
01 Longer
early, change to setting 01. If the
notification is too late, change to
02 Shorter
setting 02.
00 Enable
○
01 Disable
Enable or disable the filter indicator.
Display only
Setting 02 is for use with a central
on central
remote controller.
02
remote con-
troller
00 Enable
Enable or disable automatic system
restart after a power outage.
01 Disable
○
00 Super low
Restrain the cold airflow with mak-
ing the airflow lower when starting
Follow the
heating operation.
setting on
If using Outlet temperature control
01
○
the remote
(DIP switch SET3-3: OFF), set this
controller
function"01".
00 All
○
Change the target for reporting
Display only
errors. Errors can either be reported
on central
in all locations, or only on the
01
remote
central remote controller.
controller
00 Mode 0
○
The connection terminal functions
can be changed depending on the
type of external device. For details
of the connection terminal func-
01 Mode 1
tions, see the Design & Technical
Manual.
00 Mode 0
Thermostat off
○
01 Mode 1
Thermostat OFF + fan stop
Thermostat OFF + fan stop +
02 Mode 2
outdoor unit stop
En-14
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