SYSVRF AHU S IOM

8
installation manual
8. APPLICALTION CONTROL
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.
8-4 DX AHU control box address and
network Address Setting
8-1 Capacity setting
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.
ENC1
Fig.8-1
● Function specification:
ENC1——Cooling capacity setting, set the cooling capacity of
this machine (Table. 8-1).
Table.8-1
ENC1
0～A
B
C
D
E
F
address +1
Corresponding virtual addresses for different ENC1
/
No virtual address
Actual
address +1
Actual
address +2
Actual
address +1
Actual
address +2
Actual
address +3
Actual
address +1
Actual
address +2
Actual
address +3
Actual
address +4
Actual
address +1
Actual
address +2
Actual
address +3
Actual
address +4
Actual
address +5
Actual
//
/
/
/
/
/
/
/
Table.8-3
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.
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.
The corresponding capacity range of the controller box display
as the table.8-2
Code Setting cooling capacity
0 0.8HP
1 1.0HP
2 1.3HP
3 1.6HP
4 2.0HP
5 2.5HP
6 3.0HP
7 3.2HP
8 4.0HP
9 5.0HP
A 6.0HP
B 8、10、12HP
C 14、16HP
D 18、20HP
E
Reserved
F
Reserved
ENC1
(The
horsepower
has been set
before leaving
the factory;
anyone can’t
modify it except
the maintenance
person.)
Model
Setting
cooling
capacity
(HP)
Indoor
unit
capacity
(kW)
Internal volume of
heat exchanger
(dm³)
reference
air volume
(m³/h)
3.2 9~11.2
1.6585~2.0639
1400
4 11.2~14
2.0639~2.5799
1700
5 14~18
2.5799~3.3170
2100
6 18~20
3.3170~3.6855
2700
8 20~25
3.6855~4.6069
3000
10 25~30
4.6069~5.5283
3700
12 30~36
5.5283~6.6430
4500
14 36~40
6.6430~7.3711
5400
16 40~45
7.3711~8.2925
6000
18 45~50
8.2925~9.2139
6700
20 50~56
9.2139~10.3195
7500
AHU
5HP S
A HU
10HP S
A HU
20HP S
Table.8-2
1) The"Internal volume of Heat exchanger "calculation formula is as
follows:
3.14159×(heat exchanger copper tube OD -2×heat exchanger
copper tube wall thickness)²×heat exchanger copper tube length /4
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.
8-4-1 One DX AHU box controlling one
indoor unit
8-2 Master/Slave DX AHU box setting
8-3 The quantity of slave DX AHU box
setting
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’.
Note：the quantity of slave DX AHU control boxes setting only
need in master DX AHU box.
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.
quantity of
1
2
3
4
5
6
occupied address
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