IOM SPLIT AHU KIT 0 10V LNS20200113
9 I Installation and Operating Manual
Connection Terminal Introduction:
L, N, S Power supply and communication with outdoor unit connection
terminal 230 V, 1-phase, 50/60 Hz.
ALARM Digital output 5A - 250 VAC or 5A-30 VDC. When outdoor unit has
malfunction signal is activated.
DEFROST Digital output 5A - 250 VAC or 5A-30 VDC. When outdoor unit is in
defrost mode, signal is activated
TEMP1 Terminal for temperature sensors. The temperature sensor must be
placed at middle of heat exchanger.
0 - 10V Analog input terminal to control outdoor unit capacity.
Pay attention to the polarity 0/- and 10/+
Capacity steps:
0 - 0.5 V 0% (unit stopped)
0.5 - 1.5 V 10 % capacity (LED display digit 1)
1.5 - 2.5 V 20 % capacity (LED display digit 2)
...
9.5 - 10.5 V 100% capacity (LED display digit 10)
Warning! Signal input cannot exceed 10.5 V DC, otherwise it may destroy
this control module.
COOL Digital input. When terminals are closed, the unit is running in
cooling mode and „COOL“ LED is on.
HEAT Digital input. When terminals are closed, the unit is running in
heating mode and „HEAT“ LED is on.
Note: Heating mode has priority. If both COOL and HEAT terminals are
closed, unit will run in HEAT mode.
When there are different operating mode among active indoor
units, the system will operate as follow:
- Heating mode will have the priority.
- Cooling mode and Fan mode will conict to Heating mode.