Translation of the original installation and operating instructions
8
AL-KO HYDROOPT
®
1.5.3 Schematic with one exhaust air device (example)
M
I
D
P
K
P
P
T
AL-KO -
HYDRO-OPT
1
2
3
5
6
9
7
8
7
10
11
12
13
4
T
11
Mains supply 400 V/50 Hz 20 A
Input for ext. release
HRO demand (0–10 V)
Heat-up mode demand (disconnect all exhaust air exchangers)
Operating feedback message (digital out)
Error alarm A
Error alarm B
OPTIONAL bus connection
1
Switch cabinet
9
Expansion tank installation on the intake side
2
Frequency converter
10
Flowmeter
3
Dirt trap
11
Temperature sensor
4
Power control valve
12
Frost valve
5
Safety valve 6 bar
13
Eff. pressure fan differential pressure sensor
6
Filling connection
7
Pressure gauge
8
Pressure monitor
