Huawei NetCol8000-C070 Quick Manual page 12

4.2
(Optional) Connecting the T/H Sensor Outside the Cabinet
Downflow
• The T/H sensors inside the cabinet are secured at the return air side and their UP ports are
connected to the main control board. When connecting the T/H sensors outside the cabinet,
connect the DOWN port of one T/H sensor inside the cabinet to the UP port of the next T/H
sensor outside the cabinet as shown in the following figure. Connect all T/H sensors in series
in this way. and secure them with cable ties or other fasteners.
• The T/H sensors should be installed 1.5 m (33 U) above the floor. Each smart cooling
product supports three T/H sensors in cold aisles and the other three in hot aisles at most.
DIP Switch Instructions
Position Name
Return-air side Return air T/H 1
Cold aisle T/H 1
Cold aisle Cold aisle T/H 2
Cold aisle T/H 3
Hot aisle T/H 1
Hot aisle Hot aisle T/H 2
Hot aisle T/H 3
Fresh air temperature
and humidity
Direct
ventilation
Temperature and
humidity at the return
(1) T/H sensors outside the cabinet
Address
1
11
12
13
21
22
23
29
27
air valve
Upflow
DIP Switch Sequence No.
1 2
ON OFF
ON ON
OFF OFF
ON OFF
ON OFF
OFF ON
ON ON
ON OFF
ON ON
11
3 4 5
OFF OFF OFF
OFF ON OFF
ON ON OFF
ON ON OFF
ON OFF ON
ON OFF ON
ON OFF ON
ON ON ON
OFF ON ON
6
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF