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Rear
The interfaces at the rear of the control box have been connected at delivery. The
connecting components are shown in the table below.
No.
1
2
3
4
5
6
7
InfraSuite RowCool Precision Cooling –
Chilled Water
1
2
3
ATS
BV EPO
DPS
LD DP
FM
6
7
9
8
(Figure 3-22A : HCH1850 Rear of control box)
(Figure 3-22B : HCH1870 Rear of control box)
Connects to
Power automatic transfer relay
Three-way ball valve actuator
EPO device
Fans 1-8
Input power (54Vdc)
Pressure difference switch (detects
Water leakage detector
4
FAN 7 & 8
FAN 5 & 6
FAN 3 & 4
2
1
OUTLET
INLET
WATER TEMP .
TEMP. & HUMIDITY
10
11
12
No.
8
9
10
11
12
13
14
26
FAN 1 & 2
DC 54V
VIN-B VIN-A
AC 24V
DISPLAY
13
Connects to
Water level detector
Flow meter
Outlet water temperature sensor
Inlet water temperature sensor
Temperature and humidity sensor 1/ 2
Input power of control box (24Vac)
Control panel
5
14
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