Xylem HYDROVAR (HV2.1 - 3.45) - Manual (Page 25)

25
6.3 Wiring and connections
Remove the screws holding the top cover of the HYDROVAR.
(Caution: At HV3.15e - 3.22e also the 8 screws of the display have to be removed!)
Lift off the top cover and you could see the following parts.
HV 2.1f – 3.11f
HV3.15e – HV3.45e
RS 485-terminals
Control terminal blocks
24VDC output
(max. 800mA)
for external
fan / modbus
Connection to power
board
Connection to
Display
DIP-switch
Motor connections
Power supply
3x400 VAC
RS-485 terminals
Indication LEDs
push buttons LCD-Display
24VDC output
(max. 1A)
for external
fan / modbus
Connection to
power board
Contr
ol ter
m
inal bloc
ks