IOM SPLIT AHU KIT 8243 8245

7 I Installation and Operating Manual
Connection Terminal Introduction:
L, N Power supply connection terminal 230 V, 1-phase, 50/60 Hz.
ALARM Digital output 5A - 250 VAC or 5A-30 VDC. When outdoor unit has mal-
function signal is activated.
DEFROST Digital output 5A - 250 VAC or 5A-30 VDC. When outdoor unit is in
defrost mode, signal is activated.
P, Q
Terminal for communication cable between controller and outdoor unit.
Should not be less than 2 x 0,5 mm
2
(shielded). Different outdoor units
may have different signal terminals. Please refer to following connection:
TEMP1 Terminal for temperature senor (this connection is only for SPLIT-AHU
Kit 8245). The temperature sensor must be placed at middle of heat
changer.
0 - 10V Analog input terminal to control outdoor unit capacity.
Warning: signal input cannot exceed 10.5 V DC, otherwise it may dest-
roy this control module.
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)
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 modehas priority . If both COOL and HEAT terminals are closed,
unit will run in HEAT mode.
E Q P
Q P
Outdoor unit
terminal
PCB terminal
Outdoor unit
terminal
Remark: If S1-Q/S2-P does not work,
then change it to S1-P/S2-Q.
S1 S2
Q P
PCB terminal