Ask your dealer or technical representative to install the
unit.
Any deficiency caused by your own installation may result in
an electric shock or fire.
Install in a place which is strong enough to withstand
the weight of the PAC-SC30GRA.
Any lack of strength may cause the PAC-SC30GRA to fall
down, resulting in personal injury.
Firmly connect the wiring using the specified cables.
Carefully check that the cables do not exert any force
on the terminals.
Improper wiring connections may produce heat and possi-
bly a fire.
Never modify or repair the PAC-SC30GRA by yourself.
Any deficiency caused by your modification or repair may
result in an electric shock or fire.
Consult with your dealer about repairs.
Building Air Conditioning Control System
Group Remote Controller PAC-SC30GRA
Installation Manual
This installation manual contains only the description of how to install the Group Remote Controller PAC-SC30GRA. For
information about how to wire and how to install air conditioning units, see the installation manual for them.
For your safety, first be sure to read
“ 1 Safety Precautions ”
described below thoroughly and then install the Group Remote
Controller PAC-SC30GRA correctly.
1
Safety Precautions
●
The following two symbols are used to denote dangers that may be caused by incorrect use and their degree:
WARNING
This symbol denotes what could lead to serious injury or death if you misuse the PAC-SC30GRA.
CAUTION
This symbol denotes what could lead to a personal injury or damage to your property if you misuse the PAC-SC30GRA.
●
After reading this installation manual, keep it in a place where the final user can see it anytime he or she wants to it.
When someone moves, repairs or uses the PAC-SC30GRA, make sure that this manual is forwarded to the final user.
WARNING
WT02948X01
Ensure that installation work is done correctly follow-
ing this installation manual.
Any deficiency caused by installation may result in an elec-
tric shock or fire.
All electrical work must be performed by a licensed tech-
nician, according to local regulations and the instruc-
tions given in this manual.
Any lack of electric circuit or any deficiency caused by in-
stallation may result in an electric shock or fire.
Do not move and re-install the PAC-SC30GRA yourself.
Any deficiency caused by installation may result in an elec-
tric shock or fire.
Ask your distributor or special vendor for moving and instal-
lation.
To dispose of this product, consult your dealer.
GB
Use a maximum of 1.25mm
2
cable for remote controller
wiring. 0.75mm
2
cable is recommended for ease of use.
Lower case
2
Confirming the Supplied Parts
Check that the box contains the following parts in addition to
this manual:
(1) Group remote controller (with upper and lower case) .................. 1
(2) Cross recessed pan head screws (M4
×
30) .................................. 2
(3) Wood screws (4.1
×
16, for directly hooking to the wall) ................ 2
(4) Room label ................................................................... 1 (2 labels)
(5) Label covers ................................................................................. 2
(6) Caution label (in 10 languages) .................................................... 1
(7) Instruction book ............................................................................ 2
NOTE: The remote controller cord is supplied on site.
Use a electric cable in accordance with the following specifications.
Electric cable specifications (CVV or CVVS)
With CVVS, be sure to insulate the cable shield so that it does not contact the terminal block.
The 1.25mm
2
cable is for use as an extension.
• Up to 10m .............. 0.75mm
2
twin-core cable
• Longer than 10m .... 1.25mm
2
twin-core cable (extension cord)
Do not install in any place where acidic or alkaline solu-
tion or special spray are often used.
Doing so may cause an electric shock or malfunction.
Use standard wires in compliance with the current ca-
pacity.
A failure to this may result in an electric leakage, heating or
fire.
Do not touch any PCB (Printed Circuit Board) with your
hands or with tools. Do not allow dust to collect on the
PCB.
Doing so may cause fire or an electric shock.
Do not remove the insulation sheet on the PCB.
Doing so may cause an electric shock.
Do not touch any control button with your wet hands.
Doing so may cause an electric shock or a malfunction.
Do not press any control button using a sharp object.
Doing so may cause an electric shock or a malfunction.
Never contact the power supply with the control wiring
terminals.
Doing so will certainly cause the controller to catch fire.
Do not install in any place exposed to flammable gas
leakage.
Flammable gases accumulated around the body of PAC-
SC30GRA may cause an explosion.
Do not use in any special environment.
Using in any place exposed to oil (including machine oil),
steam and sulfuric gas may deteriorate the performance sig-
nificantly or give damage to the component parts.
Wire so that it does not receive any tension.
Tension may cause wire breakage, heating or fire.
Completely seal the wire lead-in port with putty etc.
Any dew, moisture, insects entering the unit may cause an
electric shock or a malfunction.
Do not wash with water.
Doing so may cause an electric shock or a malfunction.
Do not install in any place at a temperature of more than
40
°
C or less than 0
°
C or exposed to direct sunlight.
Do not install in any steamy place such a bathroom or
kitchen.
Avoid any place where moisture is condensed into dew. Doing
so may cause an electric shock or a malfunction.
CAUTION
3
System Configuration
M-NET model address setup (address duplication not possible)
Address setup
Address
Indoor unit / Interlocked unit
Any address within the range specified at right.
1~50
Outdoor unit
The smallest address of indoor unit in same
refrigerant 50
51~100
Remote controller
Any address within the range specified at right.
101~200
Group remote controller
The smallest group No. to be m 200
201~250
Central management transmission line
Indoor and outdoor transmission line
Interlocked with ventilation equipment
Power supply unit
Model: PAC-SC34KUA
M-NET remote controller
Indoor unit
Group remote controller
Group 12
Group 13
Group 14
Group 1
Group 2
Group 3
Group 4
Group 5
Group 6
Group 7
Group 8
[(2)10]
[(2)01]
[(1)01]
[(1)02]
[(1)04]
[(1)05]
[(1)07]
[(1)08]
[51]
TB7
TB3
[01]
TB5
[02]
TB5
[03]
TB5
[04]
TB5
[05]
TB5
[06]
TB5
[07]
TB5
[08]
TB5
[(1)14]
[(1)64]
[(1)12]
[(1)10]
[15]
TB5
[14]
TB5
[13]
TB5
[12]
TB5
[11]
TB5
[10]
[16]
TB5
[09]
TB5
[59]
TB7
TB3
Central controller
Model: MJ-103MTRA
The place of 100 is fixed to “1”.
The place of 100 is fixed to “2”.
Note the following when connecting to central management transmission line (Caution 3)
Number of system controllers per system which may
Power supply unit model
be supplied with power
1~5
PAC-SC34KUA
CAUTION
1. This diagram shows the configuration of transmission wiring, and omits power supply wiring for clarity.
2. Establish one shield ground for M transmission wiring within the system.
3. The number of system controllers which may be supplied with power are found by multiplying the given num-
ber by the appropriate capacity coefficient in the following table (decimal fractions are rounded up).
Capacity coefficient
Group remote controller
Central controller
0.5
1
Example: The following applies for 2 group remote controllers and 1 central controller.
2
×
0.5 + 1
×
1 = 2
Number of system controllers which may be supplied with power
Number of central controllers
×
capacity coefficient
Group remote controllers
×
capacity coefficient
4. The eight groups are allocated automatically (group remote controller setup address
-200~group remote controller setup address -200+7 is the management group).
Examples: Group 1~8 is the management group when the group remote controller setup address is 201.
Group 9~16 is the management group when the group remote controller setup address is 209.
5. As current consumption is twice that with remote controller when this equipment is connected to indoor or
outdoor transmission wiring, assume two remote controllers for each of these units when calculating connec-
tions.
4
How To Install
(1) Choose a location in which to install the group remote controller (switch box) in accordance with
the following requirements:
1
The space as shown in the diagram at right is required whether
the controller is installed on the wall or in the switch box (except
when used with the program timer (PAC-SC32PTA)).
2
Procure the following parts locally.
Switch box for two units
Thin-copper wiring pipe
Locknut and bushing
Extra space around
remote controller
External size of
remote controller
30
46
30
30
120
83.5
±
0.4
Installation pitch
Remote controller cord
(see (3) below)
Wood screws
Connect this to CN1
on upper case (see
(6) below).
Switch box
Connect this to CN1
on upper case
(see (6) below).
Seal this remote controller cord lead-in with putty or silicon rubber.
(see (9) below)
Cross recessed
pan head screws
Remote controller cord
(see (3) below)
When Installing Directly on the Wall
When Installing the Switch Box
B. 2
A. 1
No polarity
Remote controller cord procured locally.
Terminal block
(3) Connect the remote controller cord to the terminal block on the lower case.
Install wiring correctly in accordance with the diagram at right.
Group remote controller upper case
CAUTION
Addresses between 201 and 250 may be set with the group remote controller. The place of 100
is fixed to “2”.
Example : Address 208
✕
10
✕
1
Rotary switch
(4) Set the group remote controller address with the rotary switches.
(5) When used in conjunction with the master system controller (centralized controller), set the group
remote controller to “Slave” with the switch as shown in the diagram below.
• The switch is set to “Master” when shipped from the factory.
Group remote controller upper case
(6) Connect this connector on the lower case to the connector CN1 on the upper case.
CAUTION
• Connect firmly as shown below. The system will not operate unless these connections are
made.
• After connecting the wiring, ensure that the upper case does not hang off the cord as shown in
the diagram below at the right. This may result in a break in the cord, and thus cause problems
with operation.
• Always pass the cord through the hook to hold it in place.
Hook
Remote controller lower case
Connect this to
connector CN1
Connector CN1
Remote controller upper case
CAUTION
• Press the case until it snaps shut.
• A protective sheet has been affixed to the control panel.
Remove it before starting.
CAUTION
Do not turn the screwdriver while it is inserted into the
open slot. Doing so can result in damage to the claws.
To remove the upper case, insert a minus screwdriver
into one of the open slots and move it in the direction of
the arrow as shown in the diagram at right.
(8) Wiring hole for fitting directly onto the wall.
• Cut out the thin-wall portion of the upper case (shaded area) using
a knife or nipper.
• Take out the remote controller cord connected to the terminal block
via this portion.
When Fitting Directly on the Wall
When Using the Switch Box
Wiring pipe
Wall
Bushing
Remote controller cords
Lock nut
Switch box
Seal with putty
Remote controller cord
Seal with putty
Seal with putty
Cord Taken Through Top of
Remote Controller
Cord Taken Through Rear of
Remote Controller
• When fitting directly to the wall as in (2), seal the cut-
out in the upper case with putty.
• When cutting a hole in the wall for the remote con-
troller cord (ie when the remote controller cord exits
from the rear of the remote controller), seal this hole
in the same way.
• When fitting to the switch box, seal the join between
the switch box and the wiring conduit with putty.
(10) Affix a caution label.
A caution label in English is supplied on the back surface of the upper panel. Affix another caution label in the
language of a country where you use the Group remote controller over the English one.
5
Connecting Optional parts
• When connecting a program timer connect a 5-core cable to connector
CN2 (timer connector) on the upper case (a 5-core cable is supplied with
the program timer).
• Cut out the thin-wall portion to take the cable.
• When fitting directly onto the wall, fit the group remote controller on the left
of the program timer to facilitate wiring. If you anticipate installing more
program timers, leave the appropriate space to the left of the remote con-
troller. See the program timer installation manual for installation details.
Connector CN2
Thin-wall portion
6
Initial Settings
• Initial settings is necessary before test run. Consult the user’s manual for details of initial settings.
COLLECTIVE
GROUP
CENTRALLY CONTROLLED
ON
˚C
NOT AVAILABLE
˚C
OFF
GROUP
CHECK
FILTER
CHECK MODE
TEST RUN
ADDRESS
FILTER
CHECK
TEST RUN
GROUP
TEMP.
ON/OFF
ON/OFF
Diagram A
COLLECTIVE
GROUP
CENTRALLY CONTROLLED
ON
˚C
NOT AVAILABLE
˚C
OFF
GROUP
CHECK
FILTER
CHECK MODE
TEST RUN
ADDRESS
ON/OFF
D
G
H
J
K
7
Test Run
• Test run is performed individually for each group, or for all groups.
A
B
c
E
F
I
Diagram B
Procedure
Switch layout is as shown in Diagram A.
Test Run for Each Group
1
Open the upper panel.
2
Call out the group for which test run is to be run using the
A
[GROUP]
switch. Example : Group 5
Call up Group 5 with the
A
[GROUP]
.
3
Begin test run.
• Test run begins when the
B
[TEST RUN] switch is pressed twice in succession.
• The address of the indoor unit is displayed on the temperature setup display (3 digits).
• Displays the piping temperature (-99
°
C~99
°
C) for the indoor unit corresponding to the address displayed on the
room temperature display.
• The address of indoor units registered in that group may be changed with the
C
[External Timer]
switch. When
test run begins, the lowest address registered in the group is displayed, the address being increased each time the
C
[External Timer]
switch is pressed.
• The duration of test run as two hours, and is counted down in one minute intervals, until test run is terminated at
0:00 and test run is halted.
•
TEST RUN
and the group select icon flash during test run.
•
D
[Operation Mode]
,
E
[Fan Speed Adjustment]
,
F
[Horizontal Blow]
,
G
[Air Direction]
and
H
[Ventilation Setting]
may be used during test run.
• Press the
I
ON/OFF
switch to halt test run.
• Test run is disabled during central management with ON/OFF prohibition.
4
Close the upper panel (setup complete).
* The screen continues when setting up individual groups. The collective operation monitor screen appears when
setting up collectively. Ensure that the upper panel is fully closed.
5
Test run complete.
The test run setup in
3
is completed after two hours and operation is then halted (the test run display is extinguished).
• Operation is halted only for the groups for which test run has been performed.
• Operation is halted for all groups in a batch.
Test run may be halted as follows irrespective of the remaining time (air-conditioning units halted).
• Press the
J
[Collective ON/OFF] switch • Press the
I
ON/OFF
switch • Press the
K
[ON/OFF by Group]
switch.
Test run is terminated only for the relevant group when the
K
[ON/OFF by Group] switch is pressed.
Test Run for All
1
Open the upper panel.
2
Call out the collective operation setting screen using the
A
A
A
A
A
[GROUP]
switch.
3
Begin test run.
• Test run begins when the
B
[TEST RUN] switch is pressed twice in succession.
• After the
B
[TEST RUN] switch has been pressed twice in succession the
ON
and time remaining display changes
from flashing to lit continuously (The overall status lamp lights up). The
TEST RUN
and group select display flash
during test run.
• The smallest address of indoor unit of the smallest number group is displayed on the collective operation setting
screen (above).
• To check the liquid pipe temperature for the indoor units registered in each group, select the indoor unit for which
the liquid pipe temperature is to be checked using the
C
[External Timer]
switch.
•
TEST RUN
and all select icons for the registered groups flash during test run.
4
Close the upper panel (setup complete).
* The screen continues when setting up individual groups. The collective operation monitor screen appears when
setting up collectively. Ensure that the upper panel is fully closed.
5
Test run complete.
The test run setup in
3
is completed after two hours and operation is then halted (the test run display is extinguished).
• Operation is halted only for the groups for which test run has been performed.
• Operation is halted for all groups in a batch.
Test run may be halted as follows irrespective of the remaining time (air-conditioning units halted).
• Press the
J
[Collective ON/OFF] switch • Press the
I
ON/OFF
switch • Press the
K
[ON/OFF by Group]
switch.
Test run is terminated only for the relevant group when the
K
[ON/OFF by Group] switch is pressed.
COLLECTIVE
GROUP
CENTRALLY CONTROLLED
ON
˚C
NOT AVAILABLE
˚C
OFF
GROUP
CHECK
FILTER
CHECK MODE
TEST RUN
ADDRESS
COLLECTIVE
GROUP
CENTRALLY CONTROLLED
ON
˚C
NOT AVAILABLE
˚C
OFF
GROUP
CHECK
FILTER
CHECK MODE
TEST RUN
ADDRESS
Indoor unit address
Remaining time
Indoor unit piping
temperature
Test run display
* Collective operation
setting screen
COLLECTIVE
GROUP
CENTRALLY CONTROLLED
ON
˚C
NOT AVAILABLE
˚C
OFF
GROUP
CHECK
FILTER
CHECK MODE
TEST RUN
ADDRESS
COLLECTIVE
GROUP
CENTRALLY CONTROLLED
ON
˚C
NOT AVAILABLE
˚C
OFF
GROUP
CHECK
FILTER
CHECK MODE
TEST RUN
ADDRESS
Upper case
Group 11
Group 10
Ventilation
equipment
(Interlocked unit)
Master
Slave
(7) Fitting the upper case.
First hook the upper case to the two upper claws
and then fit it as shown at right.
Rotary switch setting
Address
01~50
201~250
• The rotary switch is set to 01 when shipped from the factory.
(2) Attach the lower case to the wall or the switch box.
NOTE: Over-tightening the screws may result in deformation or cracking of the lower case.
(9) Seal the remote controller cord lead-in with putty in order to prevent possible entry of dew, water
droplets and other insects.
NOTE: The only indoor unit this device can be used to operate is an M-NET control indoor unit. It will not operate
a K control indoor unit, even with a K transmission converter (PAC-SC25KAA).
