Xylem HYDROVAR HV2.1f - Wiring and Connection Overview

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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
Dis
p
la
y
DIP-switch
Motor connections
Power supply
3x400 VAC
RS-485 terminals
Indication LEDs
push buttons
LCD-Displa
y
24VDC output
(max. 1A)
for external
fan / modbus
Connection to
power board
Control terminal blocks