IOM SYSVRF2 AHU BOX0620 20220209 134828067 20220209 140641571

22
Normal
Voltage Range
Cooling Set
Temperature
(°C)
Heating Set
Temperature
(°C)
7.4
7.8
8.2
8.6
9
9.4
7.25
7.65
8.05
8.45
8.85
9.25
7.55
7.95
8.35
8.75
9.15
10
26
27
28
29
30
Non settable
26
27
28
29
30
Non settable
Min. Max.
Note:
The analog voltage must be between maximum and
minimum value.
5 DIP DEFINITION
1) Definitions of each bit of SW1:
2) Definitions of each bit of SW2:
ON
1234
SW1-1 is 0: shutdown compensation
temperature (cooling) is 0°C (factory
default)
SW1-1 is 1: shutdown compensation
temperature (cooling) is 2°C (outlet
air temperature control is invalid)
SW1-2 is 0: AHU control box provides
three fan speeds (factory default)
SW1-2 is 1: only one fan speed
Valid for the
master unit only
ON
1234
Valid for the
master unit only
SW1-3 and SW1-4 are 00: the
number of slave AHU control boxes
connected in parallel is 0 (factory
default); valid for the master unit
ON
1234
Valid for the
master unit only
SW1-3 and SW1-4 are 01: the
number of slave AHU control boxes
connected in parallel is 1
SW1-3 and SW1-4 are 10: the
number of slave AHU control boxes
connected in parallel is 2
SW1-3 and SW1-4 are 11: the
number of slave AHU control boxes
connected in parallel is 3
ON
1234
Valid for the
master unit only
ON
1234
Valid for the
master unit only
ON
1234
Valid for the
master unit only
ON
1234
SW2-1 is 0: automatic addressing
(factory default)
SW2-1 is 1: clearing AHU control
box address
SW2-2 is 0: no self-check (factory
default)
SW2-2 is 1: self-check
ON
1234
SW2-3 and SW2-4 are 00: master
AHU control box(factory default)
ON
1234
SW2-3 and SW2-4 are 01: slave
AHU control box 1
SW2-3 and SW2-4 are 10: slave
AHU control box 2
SW2-3 and SW2-4 are 11: slave
AHU control box 3
ON
1234
ON
1234
ON
1234
NOTE
0 means DIP switch is dialled to “OFF”
1 means DIP switch is dialled to “ON”