En-22
8.2.2 System type setting
(1) DIP switch settings
Set the system type to
heat recovery or heat
pump.
SET2
System type
12
OFF OFF Heat Recovery (factory setting)
ON OFF Heat Pump
OFF ON
Prohibited
ON ON
(2) System type confirmation
Use the “MODE/EXIT”, “SELECT”,
and “ENTER” buttons to configure
settings according to the procedures
below. (If no setting is made, the fac-
tory default setting will be displayed.)
MODE
/EXIT
SELECT
ENTER
: Press the “MODE/EXIT” button
: Press the “SELECT” button
: Press the “ENTER” button.
: Press the “ENTER” button for
more than 3 seconds.
1: Function setting
First 2 digits Last 2 digits
(The display when the main power is turned on)
Set to Function mode [F1].
(When [F2] to [F9] are displayed, continue to press the
“SELECT” button until [F1] is displayed.)
2: System type confirmation
Press the “SELECT” button until “06” is displayed.
Press the “ENTER” button for more than 3 seconds.
The system type is
Heat Recovery.
The system type is
Heat Pump.
The setting is incorrect.
Correct the setting.
End
8.2.3 Settings to be configured locally
(1) Outdoor unit address setting
When 2 or 3 outdoor
units are installed to 1
refrigerant system, set the
address for each outdoor
unit.
Set the address for all
outdoor units.
SET3 Outdoor
unit ad-
dress
Remarks
12
OFF OFF 0
Primary unit
(factory setting)
OFF ON 1 Subordinate unit 1
ON OFF 2 Subordinate unit 2
ON ON - Prohibited
(2) Number of subordinate units setting for outdoor unit
Set the number of subor-
dinate units connected to
1 refrigerant system.
Set only the primary unit.
SET3 Number of
connect-
able out-
door units
Remarks
34
OFF OFF 0
Primary unit only
(factory setting)
OFF ON 1
1 subordinate unit con-
nected
ON OFF 2
2 subordinate units con-
nected
ON ON - Prohibited
8.2.4 Terminal resistor setting
CAUTION
Be sure to set the terminal resistor according to specifications.
Set the terminal resistor for every network segment (NS).
If terminal resistor is set in multiple devices, the overall communication system may be
damaged.
If terminal resistor is not set in a device, abnormal communication may occur.
• Be sure to set 1 terminal resistor in a network segment. You can set the terminal resistor
at the outdoor unit or Signal amplifier.
• When setting the terminal resistor of a Signal amplifier, refer to the installation manual of
the Signal amplifier.
• When setting multiple terminal resistors, take note of the following items.
(1) How many network segments are there in a VRF system?
(2) Where will you set the terminal resistors in a network segment? (Condition for 1 seg-
ment: Total number of outdoor and indoor units and Signal amplifiers is less than 64,
or the total length of the transmission cable is less than 1,640 ft (500 m))
(3) How many outdoor units are connected to 1 refrigerant system?
Multiple outdoor unit setting
• The primary outdoor unit to the same refrigerant system subordinate outdoor unit.
(Transmission terminal H1, H2)
Number of outdoor units
123
When use the UTY-SPWX (*1)
—
— —
SET5-1
Out door unit 1
(Primary)
Off On On Off On Off
Out door unit 2
(Subordinate 1)
— — On On Off Off
Out door unit 3
(Subordinate 2)
— — — — On On
*1: Pressure sensor kit (indoor unit optional parts)
SET5-1
H1/H2
X1/X2
H1/H2
X1/X2
Y1/Y2
SET5-1
Setting example
Terminal resistor
setting (SET5-1)
(Primary) (Primary)
UTY-SPWX (Pressure sensor kit)
3 outdoor units in a
refrigerant system
3 outdoor units with UTY-SPWX
in a refrigerant system
: Set to on : Set to off
System communication setting
• The primary outdoor unit to the indoor
units. (Transmission terminal X1, X2)
• The primary outdoor unit to the other
refrigerant system primary outdoor
unit. (Transmission terminal Z1, Z2)
SET5-4
Terminal
resistor
Remarks
Off Disable (Factory setting)
On Enable —
SET5-4
SET5-4
SET5-4
X1/X2
X1/X2
X1/X2 X1/X2
Z1/Z2
Z1/Z2
H1/H2
H1/H2
H1/H2
Setting example
NS2 (Network
segment 2)
NS3 (Network
segment 3)
NS4 (Network
segment 4)
NS1 (Network segment 1)
(Primary)
(Primary)
(Primary)
Refrigerant system 1
Refrigerant system 2
Refrigerant system 3
*2: For all subordinate
outdoor units, set
SET5-4 to off.
Terminal resistor
setting
• Primary outdoor
unit (SET5-4) (*1)
Resistor
installed
Resistor not
installed
: Set to on
: Set to off
• Signal amplifier
9378945722-05_IM_L3.indb 229378945722-05_IM_L3.indb 22 2023/3/24 9:23:502023/3/24 9:23:50
To Next Page
Loading...
