Frigicoll AHUKZ-01B Operating instructions

INSTALLATION & OWNER’S MANUAL
Control Box
AHUKZ-01B (KAHU-200.2)
AHUKZ-02B (KAHU-360.2)
AHUKZ-03B (KAHU-560.2)
Thank you very much for purchasing our air conditioner,
Before using your air conditioner, please read this manual carefully and keep it for future
reference

CONTENTS
PAGE
When installing the unit in a small room, take measures
against to keep refrigerant concentration from exceeding
allowable safety limits in the event of refrigerant leakage.
Contact the place of purchase for more information.
Excessive refrigerant in a closed ambient can lead to oxygen
deficiency.
Use the attached accessories parts and specified parts
for installation.
otherwise, it will cause the set to fall, water
electrical shock fire.
leakage,
Install at a strong and firm location which is able to
withstand the set' s weight.
If the strength is not enough or installation is not properly
done, the set will drop to cause injury.
The appliance must be installed 2.5m above floor.
The appliance shall not be installed in the laundry.
Before obtaining access to terminals, all supply circuits
must be disconnected.
The appliance must be positioned so that the plug is
accessible.
Be sure to be in conformity with the local, national and
international laws and regulations.
The enclosure of the appliance shall be marked by word,
or by symbols, with the direction of the fluid flow.
Read "PRECAUTIONS" carefully before installation.
For electrical work, follow the local national wiring
standard, regulation and this installation instructions. An
independent circuit and single outlet must be used.
If electrical circuit capacity is not enough or defect in
electrical work, it will cause electrical shock fire.
The ollowing precautions include important safty items.
Observe them and never forget.
Keep this manual with the owner's manual in a handy place
for future reference.
Use the specified cable and connect tightly and clamp
the cable so that no external force will be acted on the
terminal.
Installation must be performed in accordance with the
requirement of NEC and CEC by authorized personnel only.
If connection or fixing is not perfect, it will cause heat-up or
fire at the connection.
The safty precautions listed here are divided into two categories. In
Wiring routing must be properly arranged so that control
board cover is fixed properly.
either case, important safty information is listed which must be read
carefully.
If control board cover is not fixed perfectly, it will cause
heat-up at connection point of terminal, fire or electrical
shock.
WARNING
Failure to observe a warning may result in serious injuries.
If the supply cord is damaged, it must be replaced by the
manufacture or its sevice agent or similarly qualifued
person in order to avoid a hazard.
CAUTION
Failure to observe a caution may result in injury or damage
to the equipment.
An all-pole disconnection switch having a cintract
separation of at least 3mm in a poles should be
connected in fixed wiring.
After completing the installation, make sure that the unit operates
properly during the start-up operation. Please instruct the customer
on how to operate the unit and keep it maintained. Also, inform
customers that they should store this installation manual along with
the owner's manual for future reference.
When carrying out piping connection, take care not to let
air substances go into refrigeration cycle.
Otherwise, it will cause lower capacity, abnormal high
pressure in the refrigeration cycle, explosion and injury.
WARNING
Do not modify the length of the power supply cord or use
of extension cord, and do not share the single outlet with
other electrical appliances.
Be sure only trained and qualified service personnel to
install, repair or service the equipment.
Otherwise, it will cause fire or electrical shock.
Improper installation, repair, and maintenance may result in
electric shocks, short-circuit, leaks, fire or other damage to
the equipment.
Carry out the specified installation work after taking into
account strong winds, typhoons or earthquakes.
Improper installation work may result in the equipment falling
and causing accidents.
Install according to this installation instructions strictly.
If installation is defective, it will cause water leakage, electric
shocks, fire.
installation manual

If the refrigerant leaks during installation, ventilate the
area immediately.
Toxic gas may be produced if the refrigerant comes into the
place contacting with fire.
To install properly, please read this "installation manual" at
first.
After completing the installation work, check that the
refrigerant does not leak.
Toxic gas may be produced if the refrigerant leaks into the
room and comes into contact with a source of fire, such as a
fan heater, stove or cooker.
The air conditioner must be installed by qualified persons.
When installing the indoor unit or its tubing, please follow
this manual as strictly as possible.
If the air conditioner is installed on a metal part of the
building, it must be electrically insulated according to the
relevant standards to electrical appliances.
CAUTION
When all the installation work is finished, please turn on the
power only after a thorough check.
Ground the air conditioner.
Do not connect the ground wire to gas or water pipes,
lightning rod or a telephone ground wire.Incomplete
grounding may result in electric shocks.
Regret for no further announcement if there is any change
of this manual caused by product improvement.
Be sure to install an earth leakage breaker.
Failure to install an earth leakage breaker may result in
electric shocks.
INSTALLATION ORDER
Connect the outdoor unit wires , then connect the indoor
unit wires.
Select the location;
You are not allow to connect the air conditioner with the
power source until w(including
iring and piping the air conditioner is done.
Install the control box;
Install the outdoor unit;
Install the connecting pipe ;
Wiring;
While following the instructions in this installation
manual, install drain piping in order to ensure proper
drainage and insulate piping in order to prevent
condensation.
Improper drain piping may result in water leakage and
property damage.
Test operation.
Install the indoor and outdoor units, power supply wiring
and connecting wires at least 1 meter away from
televisions or radios in order to prevent image
interference or noise.
Depending on the radio waves, a distance of 1 meter may not
be sufficient enough to eliminate the noise.
The appliance is not intended for use by young children
or infirm persons without supervision.
Young children should be supervised to ensure that they
do not play with the appliance.
Don't install the air conditioner in the following locations:
Outdoor occasions.
There is petrolatum existing.
There is salty air surrounding (near the coast).
There is caustic gas (the sulfide, for example) existing in
the air (near a hot spring).
The Volt vibrates violently (in the factories).
In buses or cabinets.
In kitchen where it is full of oil gas.
There is strong electromagnetic wave existing.
There are inflammable materials or gas.
There is acid or alkaline liquid evaporating.
The appliance shall not be installed in the laundry.
Other special conditions.
installation manual

Please check whether the following fittings are of full scope. If there are some spare fittings , please restore them carefully.
Table.3-1
NAME
SHAPE
QUANTITY
FUNCTION
1. Installation&owner
’
s manual
1
2. Wire controller
Wire controller
1
2
1
3. Wire controller installation&owner
’
s
manual manual
4. Wire controller connecting wire group
5. Signal receiver display board
B
A
D
C
1
Receive and display signal box
Secure the installation board
6. Screw ST3.9x25
8
8
3
7. Plastic expanded tube
8. Temp.sensor
9. Temp.sensor connecting wire group
3
1
10. Display panel connecting wire group
Cautions on wire controller installation
●
●
Never throw or beat the controller.
This DX box can be controlled by FRIGICOLL controller and SIEMENS controller. If choose to use FRIGICOLL controller,
operate the wire controller to determine its location in a reception range.
●
●
Keep the wire controller at least 1m apart from the nearest TV set or stereo equipment. (It is necessary to prevent
image disturbances or noise interferences.)
Do not install the controller in a place exposed to direct sunlight or close to a heatingsource, such as a stove.Note
that the positive and negative poles are in right positions when loading batteries.
installation manual

Units: mm
AHUKZ-01B-KAHU-200.2
AHUKZ-02B-KAHU-360.2
AHUKZ-03B-KAHU-560.2
Wire passing-hole
Connect to indoor unit
Connect to outdoor unit
Install vertically
Installation method: Hanging
Fig.4-1
Wrong installation way
Fig.4-2
NOTE
1
The controller box can not installation in outdoor occasions, if inevitable,it must increase rainproof precautions,specific
methods please contact the local dealar or technical support engineer.
2
3
4
As hanging installation please use Screw ST3.9x25 for installation.
As hanging installation, the box should be vertical, and the box can not be installed horizontally.
Please refer to the foregoing, make sure the laying direction of the refrigerant pipe and the connecting place of the
connecting wire.
5
All the pictures in this manual are for explanation purpose only. They may be slightly different from the control box you
purchased (depend on model).The actual shape shall prevail.
installation manual

6-2 Size of joint pipe for 410A indoor unit
Table.6-2
Capacity of
controller box
A(×100W)
Size of main pipe(mm)
CAUTION
Liquid side(mm) Available branch joint
1 The connecting distance of each control box and indoor unit
should not more than 8 m.
200<A<460
Φ12.7
Φ15.9
FQZHD-01
FQZHD-02
2 This control box can only connect to R410A refrigerant system.
3 This control box can only connect to VRF system.
4 This control box can not connect heat recovery system.
5 During the installation of connecting pipes, do not let air, dust, or
other sundries enter to the piping system.
460≤A<660
660≤A<1350
1350≤A
Φ19.1
Φ22.2
FQZHD-03
FQZHD-04
6 Install the connecting pipe only after the indoor and outdoor
units have been fixed.
e.x.1: Refer to Fig.6-1 , the capacity of downstream controller box to L4
is 560+280+140=980, the pipe is Φ19.1.
7 When installing the connecting pipes, it must be kept dry and do
not let water enter to the piping system.
8 The connecting copper pipes must be wrapped with thermal
insulation materials (usually the thickness should be more than
10mm; in some humid area it should be thicken properly).
6-3 Example
Take (56+36+20) kW that composed by three controller
box as an example to clarify the pipe selection.
Table.5-1
Table.6-3
Pipe Material
Model
Copper Pipe for Air Conditioner
Controller box capacity AHUKZ-01B AHUKZ-02B AHUKZ-03B
KAHU-200.2. KAHU-360.2. KAHU-560.2
200<A≤360 360<A≤560
AHUKZ-01B AHUKZ-02B AHUKZ-03B
KAHU-200.2 KAHU-360.2 KAHU-560.2
A(×100W)
90<A≤200
Φ8
Φ8
Φ12.7
Φ12.7
Φ16
Φ16
Size(mm)
Liquld side(mm)
Φ9.5
Φ12.7 Φ15.9
A
The branch pipe at the controller box.
There are a~c branch pipe at the controller box, the branch
pipe diameter should be select as Table. 6-3.
6-1 Pipe classification
B
Main pipe at the controller box (Refer to Table. 6-2)
Table.6-1
1)
The main pipe L1 L2 with N1, N2 downstream controller box that
total capacity is 280+140=420, the pipe L 1 diameter is Φ12.7,
thus select FQZHD-01 for the branch joint B.
Pipe name
Code(refer to Fig.6-1)
Controller box main pipe
L1, L2
2)
The branch joint A with N0~N2 downstream controller box that
total capacity is 560+280+140=980, thus select FQZHN-03 for
the branch joint A.
a a b b c c
1, 2, 1, 2, 1, 2
Controller box aux. pipe
Controller box branch joint assembly
A, B
NOTE
The connecting distance of each control box and indoor unit
should not more than 8 m
a2+L4≤8m b2+L2+L4≤8m c2+L2+L4≤8m
outdoor unit
Indoor unit
AHUKZ-03B KAHU-200.2(56kW)
a
1
N0
a
2
A
Liquid pipe
Liquid pipe
A
L
3
L4
L1
AHUKZ-02B KAHU-360.2(28W)
L
2
b
1
b2
c2
N1
B
B
c
1
AHUKZ-01B KAHU-560.2(14kW)
N2
Gas pipe
Fig.6-1
installation manual

Table.7-3
Model
The maxium current of AC motor
AHUKZ-01B
KAHU-200.2
CAUTION
3.5 A
18 A
AHUKZ-02B~03B
KAHU-360.2-560.2
1
2
The outdoor and indoor units should use separate power
supply with rated voltage. but all the indoor units in the same
system shoud be use the same power.
The external power supply to the air conditioner should have
ground wiring, which is linked to the ground wiring of the indoor
and outdoor unit.
The wiring work should be done by qualified persons according
to circuit drawing.
The fixed connecting lines must equip with at lease 3mm
electric shock spacing.
A leakage protector should be installed according to the local
electrical standard.
Be sure to locate the power wiring and the signal wrings well to
avoid cross-disturbance and their contact with connecting pipe
or stop value body. Generally, do not twist two wiring together
unless the joint is soldered well and covered with insulator
tape.
7-3 Terminal block setting figure
Please refer to the indoor unit wiring figure for connecting wire.
3
4
5
6
220-240V~
208-230V~
50Hz
60Hz
Connect to indoor power
7
Do not turn on the power until the electrical wiring have been
done correctly.
Fig.7-1
7-1 The specification of power
P1 N1 N H M L
The specification of power as the follow display figure, if the
wire is too small will lead to over heat, and cause burning of
the machine accident.
High
Low
Table.7-1
Neutral Medium
AC fan contral
Model
Phase
AHUKZ-01B (KAHU-200.2)
Single-phase
Pump contral
Fig.7-2
Power
220-240V ~ 50Hz
208-230V ~ 60Hz
Voltage and Frequency
X Y E P Q W1 W2 O
Indoor unit power wire(mm2)
2.0(<50 m)
communication wire(mm2)
weak electric signal
0.75
Table.7-2
Model
Phase
AHUKZ-02B~03B (KAHU-360.2-
560.2)
Single-phase
Water lever
switch
Power
220-240V ~ 50Hz
208-230V ~ 60Hz
Voltage and Frequency
To slave
DX
unit
To outdoor
units
Remove the
Remote
switch
short-wire and
connect to water
pump switch if
the water pump
is available.
communi-
Indoor unit power wire(mm2)
4.0(<50 m)
communi-cation bus
cation bus
communication wire(mm2)
weak electric signal
0.75
Please use 3-core shielding wire,
and ground the shielding layer.
Note, The connecting terminals of the water level switch W1 and W2 are
connected by default, when connect the indoor unit with water pump
please remove the connecting wire and connect to the water level switch.
CAUTION
Fig.7-3
The air-gap notch in the circuit breaker is used for insulating the
flexible conductor, so that must respond to the related national
wire requests to connect to the fixed circuit.
M D4 D3 S Y1 M 14 13 34 44 54 53
7-2 The maxium current of AC motor
The DX control box has a control port for single-phase AC
motor, refer to Fig.7-2. Please pay attention to the maxium current
of motor, it should not exceed value in the table 7-3.
Alarm
status
Defrost DX
Temperature Fan
set atatus
Heat
Cool
status
unit
on-off on-off
on-off
run
status
The communication ports with SIEMENS controller
Fig.7-4
installation manual

7-4 Electric control box wiring figure
Indoor temp sensor (T1), indoor
evaporator intermediate temp sensor
(T2), indoor evaporator outlet temp
sensor (T2B), please connects respond
to the wiring nameplate.
T2C
T1
T2B
T2
T2
T1
T2B
Connector
Fig.7-5
CAUTION
1
AHUKZ-01B(KAHU-200.2), AHUKZ-02B(KAHU-350.2) and AHUKZ-03B(KAHU-560.2) are applied one main control panel, the
temperature sensor T1, T2 and T2B
must connect to the main control board before first powered on ；
2
3
4
5
6
T1 is indoor temperature sensor, install to the air inlet of the indoor unit.
T2 is indoor evaporator intermediate temperature sensor, install to the intermediate of temperature evaporatorz.
T2B is indoor evaporator outlet sensor, install to the outlet of the evaporator.
T2C is indoor evaporator inlet sensor, it has been installed before the product leaves the factory.
If two or more DX box are parallel connected to control one indoor unit, only the master DX box need to connect
T1, T2,T2B.
7-5 Indoor and outdoor unit wiring figure
Outdoor unit
indoor power
Water pump
Fan wire
Water level switch
T1/T2/T2B
0# Master DX
Indoor unit
Signal wire(P、Q、E)
Liquid pipe
A
A
1# slave DX
T2
T1(Air-return inlet)
T1
T2(Intermediate se
-ction of evaporator)
B
B
T2B
T2B(Gas pipe outlet)
Liquid pipe
Fig.7-6
2# slave DX
Gas pipe
CAUTION
If it is needed, user can select the backup function in the dotted line frame.
installation manual

thereinto, "heat exchanger copper pipe " refers to the copper tubes
that are covered by fins. The tube is inner grooved copper tube. The
fins is lourered fins.
2)The volume of heat exchanger desinged is based on evaporating
temperature of 8℃, superheat of 4K, suction air temperature of 27℃
DB/19℃ WB
8-1 Capacity setting
Set the dial switch ENC1 on the main control board by different
usage. After setting, be sure to turn off the total power switch
and then switch on. The setting function can not be carried out if
not to turn off the total power switch and then switch on.
8-2 Master/Slave DX box setting
In a set of the DX AHU box system, it is need to set master DX
AHU box and slave DX AHU box respectively. Please refer to the
definition of SW6(table.10-5). If only one DX AHU box control one
indoor unit, the DX AHU box is the master DX AHU box. If two or
more DX AHU boxes parallel connection control one indoor unit, the
maximum capacity DX AHU box should be the master box, second
largest capacity box should be the slave 1, third largest capacity
box should be the slave 2 and so on. The sum of DX AHU box
should less than or equal to 4.
ENC1
Fig.8-1
● Function specification:
ENC1——Cooling capacity setting, set the cooling capacity of
this machine (Table. 8-1).
Table.8-1
8-3 The quantity of slave DX box
setting
Code
Setting cooling capacity
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
0.8HP
1.0HP
In a set of the DX AHU box system, the quantity of slave DX AHU
boxes need to be setted on the master DX AHU box, please refer to
the definition of SW1(table.10-1). If the quantity of slave DX AHU
boxes detected by Master DX AHU box is not equal to the setting
quantity, the master box will display error code ‘H7’.
1.3HP
1.6HP
ENC1(The
2.0HP
horsepower
has been set
before leaving
the factory;
anyone can’t
modify it except
the maintenance
person.)
Note：the quantity of slave DX AHU control boxes setting only
need in master DX AHU box.
2.5HP
3.0HP
3.2HP
8-4 DX AHU control box address and
network Address Setting
4.0HP
5.0HP
6.0HP
After first powered on, please set the system address by remote
controller or wired controller, the address of DX AHU box in the same
system can not be repeated.
8、10、12HP
14、16HP
18、20HP
Reserved
Reserved
8-4-1 One DX AHU box controlling one
indoor unit
For one DX AHU box control one indoor unit condition, each DX
AHU box needs to be set an address, this address is an actual
address, when the capacity code ENC1 is selected to be B～F, this
DX AHU box will produce virtual address(es) with corresponding
quantity based on the actual address, please refer to table.8-3. if an
address has been an actual address or virtual address, then this
address can not be the actual address or virtual address of any other
DX AHU box in the same system.
The corresponding capacity range of the controller box display
as the table.8-2
Table.8-2
Setting
cooling
Indoor
unit
Internal volume of
heat exchanger
(dm³)
reference
air volume
(m³/h)
Model
capacity capacity
(HP)
(kW)
1.6585~2.0639
2.0639~2.5799
2.5799~3.3170
3.3170~3.6855
3.6855~4.6069
4.6069~5.5283
5.5283~6.6430
6.6430~7.3711
7.3711~8.2925
8.2925~9.2139
9.2139~10.3195
3.2
4
9~11.2
11.2~14
14~18
18~20
20~25
25~30
30~36
36~40
40~45
45~50
50~56
1400
1700
2100
2700
3000
3700
4500
5400
6000
6700
7500
For example, if there are two DX AHU boxes in the same system,
one of the capacity code is D, the setting actual address is 5, then
according to the table.8-3 this control box will produce three virtual
addresses as 6, 7 and 8, and then the actual address and the virtual
address of the other independent control box can not be any one of
5, 6, 7, 8.
AHUKZ
-01B
(KAHU-
200.2)
5
6
8
AHUKZ
-02B
(KAHU-
360.2)
10
12
14
16
18
20
The actual address and the virtual address should less than or
equal to 63. When the capacity code is F, it will produce five virtual
address, so the actual address recommended less than or equal 58.
AHUKZ
-03B
(KAHU-
560.2)
Table.8-3
quantity of
ENC1
0～A
B
Corresponding virtual addresses for different ENC1
No virtual address
occupied address
1
1) The"Internal volume of Heat exchanger "calculation formula is as
follows:
Actual
/
/
/
/
/
2
3
4
address +1
Actual
address +1 address +2
Actual
C
D
E
F
/
/
Actual
Actual
Actual
3.14159×(heat exchanger copper tube OD -2×heat exchanger
copper tube wall thickness)²×heat exchanger copper tube length /4
/
address +1 address +2 address +3
/
Actual
Actual
Actual
Actual
/
5
6
address +1 address +2 address +3 address +4
Actual
Actual
Actual
Actual
Actual
address +1 address +2 address +3 address +4 address +5
installation manual

3) The indoor unit quantity detected by outdoor unit will be the sum
of the actual address quantity and the virtual address quantity,
when the capacity code of independent control box is D, the setting
actual address is 5, then it will produce virtual address 6, 7 and 8,
and then the indoor unit quantity detected by outdoor unit will be 4.
Shown as Table 8-3, DX AHU box with capacity dial code from 0 to
A occupy 1 address. DX AHU box with capacity dial code of B
occupies 2 addresses. DX AHU box with capacity dial code of C
occupies 3 addresses. DX AHU box with capacity dial code of D
occupies 4 addresses. DX AHU box with capacity dial code of E
occupies 5 addresses. DX AHU box with capacity dial code of F
occupies 6 addresses. The number of virtual addresses in parallel
system equals to the total number of occupied addresses by DX
AHU boxes minus one. Virtual addresses are based on actual
address and exist in the system. For several DX AHU boxes parallel
connection control one indoor unit condition, there’s only one actual
address and several virtual addresses.
4) The outdoor unit can not use auto addressing for to set the
address for the indoor unit without address, only the indoor unit has
address then can the outdoor unit to be set auto addressing;
5) When the DX AHU control box system connects to the indoor unit
centralized controller, the actual address and the virtual address
will be displayed on the centralized controller, when the capacity
code of independent control box is D, the setting actual address is
5, then the actual address 5 and virtual address 6,7 and 8 will be
displayed on the centralized controller, that is to say, it equals to
four DX , and the states of four indoor units will be kept in
the same;
Take Fig 7-6 for instance, this system is a system that 3 DX AHU
boxes are parallelly connected to control one indoor unit, e.g. 0# DX
AHU box is -03B (KAHU-560.2) and it’s capacity code is D, 1# DX
AHU box is AHUKZ-02B (KAHU-360.2) and it’s capacity code is B,
2# DX AHU box is AHUKZ-01B (KAHU-200.2) and it’s capacity code
is A. So set 0# DX AHU box as master DX AHU box, set 1# DX AHU
box as slave 1 DX AHU box, set 2# DX AHU box as slave 2 DX AHU
box. The quantity of the addresses occupied by the set of parallel
boxes is 4+2+1=7. If set address 5 to 0# DX AHU box , then the
parallel DX AHU boxes occupy address 5,6,7,8,9,10,11. The
address 6,7,8,9,10,11 are virtual adresses. The number of indoor
units which are detected by outdoor unit is 7 units.
6)The network address is the same as the indoor unit address, no
need to setting separately.
8-4-2 Several DX AHU boxes parallel
connection controlling one indoor unit
If there’re several parallel DX AHU boxes systems in one
refrigerant system, take fig 8-2 for instance, please calculate the
number of occupied virtual addresses for each parallel DX AHU box
system, design the actual address of each parallel DX AHU box
system to avoid repetition of actual addresses and virtual addresses.
The actual address and virtual address should less than or equal to
63.
For this product, several DX AHU boxes are allowed to parallel
connect to control one indoor unit. In this case, only the master DX
AHU box needs to be set an address, this address is an actual
address. Virtual addresses will be generated in the parallel system.
8-5 The wiring figure for several DX AHU boxes parallel connection.
For several DX AHU boxes parallel connection control one indoor unit condition, the wiring figure is showing as fig.8-2.
Signal wire(P、Q、E)
The signal wire between outdoor and master DX AHU box
Outdoor unit
Signal wire (X、Y、E) The signal wire between master DX AHU and slave DX AHU box
SIEMENS controller
Master DX AHU
T1,T2,T2B
Signal wire(P、Q、E)
Signal wire (X、Y、E)
1# slave DX AHU
Signal wire (X、Y、E)
1# indoor
N# slave DX AHU(N≤3)
Signal wire(P、Q、E)
SIEMENS controller
Master DX AHU
T1,T2,T2B
Signal wire (X、Y、E)
N# slave DX AHU(N≤3)
2# indoor
Fig.8-2
installation manual

9. CONTROLLER SELECTION
9-2 SIEMENS controller
The DX AHU box can be controlled by FRIGICOLL controller and
SIEMENS controller. The status of SW3 on the main board will
decide which controller has been selected.
When SIEMENS controller has been selected, only SIEMENS
controller can be use to control the DX AHU box. The signal from
FRIGICOLL controller will not be responsed except the address set and
inquire signal.
SW3
Even if SIEMENS controller has been selected, a FRIGICOLL remote
controller or wire controller is need to set address for DX AHU box,
because SIEMENS controller do not has this function.
ON
means to connect FRIGICOLL controller
1 2
SW3
ON
9-2-1 Wiring figure
means to connect SIEMENS controller
1 2
The wiring figure please refer to figure 9-4, there have three
points need to be pay attention.
Fig.9-1
Note, After changing the status of any dial switch on the main
board, be sure to turn off the total power switch and then switch
on. The setting function can not be carried out if not to turn off
the total power switch and then switch on.
1.The distance between SIMENS controller and DX AHU control
box should less than or equal 15 m.
2.If several DX AHU boxes parallel connection control one indoor
unit, SIEMENS controller only need to be connected with master DX
AHU box.
9-1 FRIGICOLL controller
When FRIGICOLL controller has been selected, the DX AHU box can
be controlled by wire controller or remote controller.
3.One SIEMENS can not control two or more indoor units at the
same time.
9-2-2 The definition of signal between
SIEMENS controller and DX AHU box.
1. Signals from SIEMENS controller to DX AHU box.
Table.9-1
Signal
type
Signal
Specification
Port
Analog
voltage
0~10VDC
please refer to table. 9-3
Temp. set
Y1-M
Dry
contact
close means ON
disconnect means OFF
ON/OFF
Cool mode
Heat mode
54-53
44-43
Remote controller
Fig.9-2
Dry
contact
close means cool mode
disconnect means no cool signal
Dry
contact
close means heat mode
disconnect means no heat signal
34-33
14-13
Dry
contact
close means fan ON
disconnect means fan OFF
Fan status
2. Signals from DX AHU box to SIEMENS controller.
Signal
Table.9-2
Port
Signal
Specification
type
Dry
contact
close means no alarm
disconnect means alarm
Wire controller
Fig.9-3
Alarm
D4-M
D3-M
Dry
contact
close means defrosting
disconnect means no defrost
Defrost
The detail instructions for wire controller and remote controller
please refer to the operation manual separately.
Dry
contact
close means running
disconnect means off
Run status
/
Note, When FRIGICOLL controller has been selected, the DX AHU box
main board will not response the signal from SIEMENS controller.
3. Communication ports on the main board.
installation manual

M D4 D3 S Y1 M 14 13 34 44 54 53
Terminal block
Power
24V
MP 24V
Y1
M
Y2
D1
M
D2
D3 M D4
D5 M
INFO
SIEMENS
POL 638.70
ALARM
ESC
13 14
23 24
33 34
43 44
53 54
63 64
SIEMENS controller
Note,
Fig.9-4
1. The distance between SIMENS controller and DX AHU control box should less than or equal 15 m.
2. If several DX AHU boxes parallel connection control one indoor unit, SIEMENS controller only need to be connected with master DX AHU
box.
3. One SIEMENS can not control two or more indoor units at the same time.
4.All signals between SIEMENS controller and DX AHU box must be accord with the definition from table.9-1 and table.9-2. It will not work
correctly if the definition of signal in SIEMENS controller has been changed.
Table.9-3
Analog Input 0-10VDC
Room Temp. (℃)
Cooling
Room Temp. (℃)
Heating
Range
Normal
0.5
Min
Max
0
1.15
1.65
2.15
2.65
3.15
3.65
4.15
Not available
Not available
1.5
2
1.35
1.85
2.35
2.85
3.35
3.85
18
18
18
19
20
16
17
18
19
20
21
2.5
3
3.5
4
21
22
23
24
4.5
5
4.35
4.85
5.35
4.65
5.15
5.65
22
23
24
5.5
6
6.5
7
5.85
6.35
6.85
6.15
6.65
7.15
25
26
27
25
26
27
7.5
8
7.35
7.85
8.35
8.85
7.65
8.15
8.65
10
28
28
29
30
29
30
8.5
9.5
Not available
Not available
installation manual

9-2-3 Operation instruction.
SW3 Difinition
Table.10-3
1 means indoor capacity requir-
ment recorrection is 80%
0 means indoor capacity requir-
ment recorrection is 100%
(Default setting)
When SIEMENS controller has been selected, DX AHU box will
operate according to the control signal from SIEMENS controller
and output alarm, defrost and run status signal.
SW3
1 2
ON
1 means to connect SIEMENS
controller and non-auto restart
function
0 means to connect FRIGICOLL
con-
troller and auto restart function
(Default setting)
SW3
1 2
ON
SW1 Difinition
Note：the quantity set of slave DX AHU
control box only need in master indoor unit.
SW5 Difinition
Table.10-1
Table.10-4
SW1
1 means factory test mode
0 means auto addressing mode
(Default setting)
ON
SW5
00 means temperature compen-
sation value is 6℃ under heat
mode (Default setting)
ON
1 2 3 4
SW1
1 2
ON
ON
ON
000 means the quantity of slave
DX AHU control box is 0
SW5
01 means temperature compen-
sation value is 2℃ under heat
mode
1 2 3 4
SW1
ON
001 means the quantity of slave
DX AHU control box is 1
1 2
1 2 3 4
SW1
SW5
10 means temperature compen-
sation value is 4℃ under heat
mode
ON
010 means the quantity of slave
DX AHU control box is 2
1 2
1 2 3 4
SW1
SW5
11 means temperature compen-
sation value is 8℃ under heat
mode
ON
ON
011 means the quantity of slave
DX AHU control box is 3
1 2
1 2 3 4
SW1
Note，the fan will keep running when T1 has reached
the set temperature under heat mode, but the function
to prevent cold air still remain in effect, that means the
fan will stop when T2 below the temperature setted by
SW2.
100 means the quantity of slave
DX AHU control box is 4
(reserved)
ON
ON
1 2 3 4
SW1
101 means the quantity of slave
DX AHU control box is 5
(reserved)
1 2 3 4
SW1
SW6 Difinition
Indoor unit address assignment
110 means the quantity of slave
DX AHU control box is 6
(reserved)
ON
ON
Table.10-5
1 2 3 4
SW1
SW6
ON
ON
ON
ON
ON
000 means master DX
AHU control box
111 means the quantity of slave
DX AHU control box is 7
(reserved)
1 2 3
SW6
1 2 3 4
001 means slave DX
AHU control box 1
1 2 3
SW6
SW2 Difinition
Table.10-2
010 means slave DX
AHU control box 2
SW2
1 means reserved
0 means new display penal
(Default setting)
ON
ON
ON
1 2 3
SW6
1 2 3 4
SW2
011 means slave DX
AHU control box 3
1 means factory relay test mode
0 means regular mode
(Default setting)
1 2 3
SW6
100 means slave DX
AHU control box 4
(reserved)
1 2 3 4
SW2
00 means when temperature is
15°C or below fan will stop to
prevent cold air (Default setting)
1 2 3
SW6
101 means slave DX
AHU control box 5
(reserved)
1 2 3 4
SW2
ON
ON
01 means when temperature is
20°C or below, fan will stop to
prevent cold air
1 2 3
SW6
ON
ON
110 means slave DX
AHU control box 6
(reserved)
1 2 3 4
SW2
10 means when temperature is
24°C or below fan will stop to
prevent cold air
1 2 3
SW6
1 2 3 4
SW2
111 means slave DX
AHU control box 7
(reserved)
ON
ON
11 means when temperature is
26°C or below fan will stop to
prevent cold air
1 2 3
1 2 3 4
Note, After changing the status of any dial switch on the main
board, be sure to turn off the total power switch and then switch
on. The setting function can not be carried out if not to turn off
the total power switch and then switch on.
installation manual

Table.11-1
NO.
1
Type
Contents
Error code
Remarks
Recover to normal display until finish
setting address
No address when first time
power on
Alarm
The LED display show “FE”
M_home non-matching,
or connect with “MS” device
The LED display show “H0”
The LED display show “E0”
The LED display show “E1”
2
3
4
Alarm
Mode conflict
Alarm
Communication error between
indoor and outdoor unit or
between master indoor and
slaver indoor unit
After the malfunctions disappear, it
restores automatically.
Malfunction
Temperature sensor (T1) error
Temperature sensor (T2) error
The LED display show “E2”
The LED display show “E3”
After the malfunctions disappear, it
restores automatically.
5
Malfunction
Temperature sensor (T2B) error
Temperature sensor (T2C) error
The LED display show “E4”
After the malfunctions disappear, it
restores automatically.
The LED display show “E7”
6
7
Malfunction
Malfunction
Malfunction
EEPROM error
The LED display show “Ed”
After the malfunctions disappear, it
restores automatically.
Outdoor unit error
After the malfunctions disappear, it
restores automatically.
Water lever alarm
The LED display show “EE”
The LED display show “H7”
8
9
Quantity of parallel connected
indoor units not match
After the malfunctions disappear, it
restores automatically.
Malfunction
Inquire button
Timer LED
Alarm indicator
LED display
Operation LED
DEF and fan LED
Infrared signal receiver
Fig.11-1
Note, If SIEMENS controller gets an alarm information from DX AHU box. Identify and correct problem first, then put a jumper to D5-M
terminals to restore it.
installation manual

MD14IU-033BW
202000172668