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Advanced manual
29
Relay ouputs
Max. switching voltage
Min. switching voltage
Rated current in AC1 / DC1 class
Min. current
Rated long term load
250VAC
5VDC
8A
10mA
8A
10. CABLING
Connect power leads of the control box and frequency converter of the fan drive
according to the Electric diagram. The wire cross-sections have been selected for
long term current capacity for cables arranged in the air (supported on brackets,
cable racks, in perforated trays) with spacing from the wall of min. 0.3 cable
diameter, insulated with PVC, for 3-conductors loaded. Due to the protection
selectivity, length, cable placement method and short-circuit currents, revise the
feeders’ cross-sections in the table below.
Wire type
Picture
Description
Parameters
[1]
Control wires with copper
cores with a shield. PVC
isolation.
Nominal voltage: 300/500 V
Ambient temperature: -30 to 80°C
[2]
Copper cores. PVC
isolation.
Nominal voltage: 450/750V
Ambient temperature: from –40 to 70°C
[3]
Copper cores. PVC
isolation.
Nominal voltage: 150 V
Ambient temperature; -20… 60°C
Name of element / connection point
Symbol
Wire type
Section [mm
2
]
Power supply for the control gear
CG
[2]
Table A
controller
N1
-
-
fi
re alarm switch
S1F
[2]
2x0,75
multi-function switch
S6
[2]
2x0,75
supply air temperature sensor
B1
[1]
2x0,75
external air temperature sensor
B3
[1]
2x0,75
after recovery air temperature sensor
B4
[1]
2x0,75
HE alarm switch VTS-E-0005
ter.23:24
VTS-E-0005
[2]
2x0,75
HW anti-frost air side thermostat
S2F
[2]
2x0,75
HW analog controlled valve
Y1
[1]
3x0,75
HE power rate control input VTS-E-0005
ter. 15:21
VTS-E-0005
[1]
3x0,75
HW circulating pump contactor
M1
[1]
3x1,5
HW back-water sensor
B7
[4]
3x0,75
glycol pre-heater anti-frost thermostat
S6F
[3]
2x0,75
glycol pre-heater analog valve
Y6
[4]
3x0,75
glycol pre-heater circulating pump
M3
[3]
3x1,0
cooling device alarm switch
S5F
[2]
2x0,75
