3] Switch Settings and Address Settings
2. M-NET Address settings (1) Address settings table
The need for address settings and the range of address setting depend on the configuration of the system.
*1. Address setting is not required for a City Multi system that consists of a single refrigerant circuit (with some exceptions).
*2. To set the ME remote controller address to "200", set the rotary switches to "00".
*3. To set the outdoor unit address to "100," set the rotary switches to "50."
*4. Some indoor units have 2 or 3 controller boards that require address settings.
No. 2 controller board address must be equal to the sum of the No. 1 controller board address and 1, and the No.3 controller board address must equal to the No. 1 controller address and 2.
*5. The outdoor units in the same refrigerant circuit are automatically designated as OC, OS1, and OS2 in the order of capacity from large to small (if two or more units have the same capacity, in the order of address from small to large).
*6. If a given address overlaps any of the addresses that are assigned to other units, use a different, unused address within the setting range.
Unit or controller Address setting
range Setting method Facto-
ry set- ting CITY MULTI in-
door unit Main/sub unit 00,
01 to 50*1*6 Assign the smallest address to the main indoor unit in the group, and assign sequential address numbers to the rest of the indoor units in the same group. *4
00 M-NET adapter
M-NET control in- terface
Free Plan adapt- er
LOSSNAY, OA processing unit
Air handling kit 00,
01 to 50*1*6 Assign an arbitrary but unique address to each of these units after assigning an address to all indoor units.
00
ATW Booster Unit
Water Hex Unit ME remote con-
troller Main remote
controller 101 to 150 Add 100 to the smallest address of all the indoor units
in the same group. 101
Sub remote
controller 151 to 200*2 Add 150 to the smallest address of all the indoor units in the same group.
MA remote controller No address settings required. (The main/sub setting must be made if 2
remote controllers are connected to the system.) Main CITY MULTI outdoor unit 00,
51 to 100*1,*3,*6 Assign sequential addresses to the outdoor units in the same refrigerant circuit. The outdoor units in the same refrigerant circuit are automatically designated as OC and OS. *5
00
System controller Group remote
controller 201 to 250 Assign an address that equals the sum of the smallest group number of the group to be controlled and 200. 201 System remote
controller Assign an arbitrary but unique address within the range listed on the left to each unit.
ON/OFF re-
mote controller Assign an address that equals the sum of the smallest group number of the group to be controlled and 200.
Schedule timer (compatible with M-NET)
Assign an arbitrary but unique address within the
range listed on the left to each unit. 202 Central con-
troller AG-150A GB-50ADA G(B)-50A
000,
201 to 250 Assign an arbitrary but unique address within the range listed on the left to each unit. The address must be set to "000" to control the K-control unit.
000
LM adapter 201 to 250 Assign an arbitrary but unique address within the
range listed on the left to each unit. 247
- 22 -
HWE10040 GB
(2) Power supply switch connector connection on the outdoor unit
(Factory setting: The male power supply switch connector is connected to CN41.)
*1 The need for a power supply unit for transmission lines depends on the system configuration. Some controllers, such as GB-50ADA, have a function to supply power to the transmission lines.
*2 The replacement of the power jumper connector from CN41 to CN40 must be performed on only one outdoor unit in the system.
(3) Settings for the centralized control switch for the outdoor unit (Factory setting: SW2-1 are set to OFF.)
*1 Set SW2-1 on all outdoor units in the same refrigerant circuit to the same setting.
*2 When only the LM adapter is connected, leave SW2-1 to OFF (as it is).
(4) Selecting the position of temperature detection for the indoor unit (Factory setting: SW1-1 set to "OFF".)
To stop the fan during heating Thermo-OFF (SW1-7 and 1-8 on the indoor units to be set to ON), use the built-in thermistor on the remote controller or an optional thermistor.
1) To use the built-in sensor on the remote controller, set the SW1-1 to ON.
Some models of remote controllers are not equipped with a built-in temperature sensor.
Use the built-in temperature sensor on the indoor unit instead.
When using the built-in sensor on the remote controller, install the remote controller where room temperature can be detected.
(Note) Factory setting for SW1-1 on the indoor unit of the All-Fresh Models is ON.
2) When an optional temperature sensor is used, set SW1-1 to OFF, and set SW3-8 to ON.
When using an optional temperature sensor, install it where room temperature can be detected.
(5) Various start-stop controls (Indoor unit settings)
Each indoor unit (or group of indoor units) can be controlled individually by setting SW 1-9 and 1-10.
*1. Do not cut off power to the outdoor unit. Cutting off the power supply to the outdoor unit will cut off the power supply to the crankcase heater and may cause the compressor to malfunction when the unit is put back into operation.
*2. Not applicable to units with a built-in drain pump or humidifier.
*3. Models with a built-in drain pump cannot be turned on/off by the plug individually. All the units in the same refrigerant cir- cuits will be turned on or off by the plug.
*4. Requires that the dipswitch settings for all the units in the group be made.
*5. To control the external input to and output from the air conditioners with the PLC software for general equipment via the AG-150A, GB-50ADA, or G(B)-50A, set SW1-9 and SW1-10 to ON. With these settings made, the power start-stop func- tion becomes disabled. To use the auto recovery function after power failure while these settings are made, set SW1-5 to ON.
System configu-
ration Connection to the system con- troller
Power supply unit for transmission lines
Group operation of units in a sys- tem with multiple outdoor units
Power supply switch connector connection
System with
one outdoor unit _ _ _ Leave CN41 as it is
(Factory setting) System with
multiple outdoor units
Not connected _ Not grouped
Grouped Disconnect the male connector from the fe- male power supply switch connector (CN41) and connect it to the female power supply switch connector (CN40) on only one of the outdoor units.*2
*Connect the S (shielded) terminal on the ter- minal block (TB7) on the outdoor unit whose CN41 was replaced with CN40 to the ground terminal ( ) on the electric box.
With connection to the indoor unit system
Not required Grouped/not grouped With connection
to the central- ized control system
Not required*1 (Powered from the outdoor unit)
Grouped/not grouped
Required *1 Grouped/not
grouped Leave CN41 as it is (Factory setting)
System configuration Centralized control switch settings *1 Connection to the system controller Not connected Leave it to OFF. (Factory setting)
Connection to the system controller Connected *2 ON
Function Operation of the indoor unit when the operation is resumed after the unit was stopped
Setting (SW1)*4 *5
9 10
Power ON/OFF by
the plug*1,*2,*3 Indoor unit will go into operation regardless of its operation status before power
off (power failure). (In approx. 5 minutes) OFF ON
Automatic restoration
after power failure Indoor unit will go into operation if it was in operation when the power was
turned off (or cut off due to power failure). (In approx. 5 minutes) ON OFF Indoor unit will remain stopped regardless of its operation status before power
off (power failure). OFF ON
(6) Miscellaneous settings
Cooling-only setting for the indoor unit: Cooling only model (Factory setting: SW3-1 "OFF.") When using indoor unit as a cooling-only unit, set SW3-1 to ON.
(7) Various types of control using input-output signal connector on the outdoor unit (various connection options)
*4. By setting Dip SW5-5, the Low-noise mode can be switched between the Capacity priority mode and the Low-noise pri- ority mode.
When SW5-5 is set to ON: The Low-noise mode always remains effective.
When SW5-5 is set to OFF: The Low-noise mode is cancelled when certain outside temperature or pressure criteria are met, and the unit goes into normal operation (capacity priority mode).
*5. Each outdoor unit in the system with multiple outdoor units requires the signal input/output setting to be made.
*6. Take out signals from the outdoor unit (OC) if multiple outdoor units exist in a single system.
CAUTION
1) Wiring should be covered by insulation tube with supplementary insulation.
2) Use relays or switches with IEC or equivalent standard.
3) The electric strength between accessible parts and control circuit should have 2750V or more.
Type Usage Function Terminal to be
used*1
*1. For detailed drawing, refer to "Example of wiring connection".
Option Input Prohibiting cooling/heating operation (thermo OFF) by an external
input to the outdoor unit.
*It can be used as the DEMAND control device for each system.
DEMAND (level) CN3D*2
*2. For details, refer to (1) through (4) shown below.
Adapter for external input (PAC- SC36NA-E) Performs a low level noise operation of the outdoor unit by an ex-
ternal input to the outdoor unit.
* It can be used as the silent operation device for each refrigerant system.
Low-noise mode (level) *3*4
*3. Low-noise mode is valid when Dip SW4-4 on the outdoor unit is set to OFF. When DIP SW4-4 is set to ON, 4 levels of on-DEMAND are possible, using different configurations of low-noise mode input and DEMAND input settings.When 2 or more outdoor units exist in one refrigerant circuit system, 8 levels of on-DEMAND are possible. When 3 outdoor units exist in one refrigerant circuitsystem, 12 levels of on-DEMAND are possible.
Forces the outdoor unit to perform a fan operation by receiving sig-
nals from the snow sensor.*5 Snow sensor signal
input (level) CN3S Cooling/heating operation can be changed by an external input to
the outdoor unit. Auto-changeover CN3N
Out-put How to extract signals from the outdoor unit
*It can be used as an operation status display device.
*It can be used for an interlock operation with external devices.
Operation status of
the compressor CN51 Adapter for external out- put(PAC- SC37SA-E) Error status
Low-noise mode is effective Capacity priority mode becomes effective
Cooling Heating Cooling Heating
TH7 < 30°C [86°F]
and63HS1 < 32kg/cm2
TH7 > 3°C [37°F]
and63LS > 4.6kg/cm2
TH7 > 35°C [95°F]
or63HS1 > 35kg/cm2
TH7 < 0°C [32°F]
or63LS < 3.9kg/cm2
- 24 -
HWE10040 GB
Example of wiring connection
(1) CN51 (2) CN3S
CN51 X
Y L1
L2
ecruos rewop pmaL
Distant control
board Relay circuit Adapter 1 Outdoor unit control board
Preparations
in the field Maximum cable length is 10m
5 43
X Y
L1 : Outdoor unit error display lamp
L2 : Compressor operation lamp (compressor running state) X, Y : Relay (coil =<0.9W : DC12V)
1. Optional part : PAC-SC37SA-E or field supply.
2. Optional part : PAC-SC36NA-E or field supply.
X : Relay
Snow sensor : The outdoor fan runs when X is closed in stop mode or thermostat mode.
X CN3S
Preparations in the field
Maximum cable length is 10m
Adapter 2 Outdoor unit control board
2 3 1
Contact rating voltage >= DC15V Contact rating current >= 0.1A Minimum applicable load =< 1mA at DC Relay circuit
(3) CN3N
2. Optional part : PAC-SC36NA-E or field supply.
Preparations in the field
OFF
Cooling ON
Heating Normal Y OFF
ON
X
Contact rating voltage >= DC15V Contact rating current >= 0.1A Minimum applicable load =< 1mA at DC X : Cooling / Heating
Y : Validity / Invalidity of X X,Y : Relay
CN3N X
Y
Relay circuit Adapter 2 Outdoor unit control board
Maximum cable length is 10m
1 2 3
(4) CN3D
2. Optional part : PAC-SC36NA-E or field supply.
X : Low-noise mode
X : Low-noise mode Y : Compressor ON/OFF
X,Y : Relay Contact rating voltage >= DC15V Contact rating current >= 0.1A Minimum appicable load =< 1mA at DC Y
X CN3D
Preparations in the field
Maximum cable length is 10m
Adapter 2 Outdoor unit control board
3 2 1 Relay circuit
2. Optional part : PAC-SC36NA-E or field supply.
X CN3D
Preparations in the field
Maximum cable length is 10m
Adapter 2 Outdoor unit control board
2 3 1
X : Relay
fan frequency and maximum compressor frequency.
Contact rating voltage >= DC15V Contact rating current >= 0.1A Minimum applicable load =< 1mA at DC
Low-noise mode : The noise level is reduced by controlling the maximum Relay circuit