Huawei FusionModule1000B V100R003C00 Commissioning Manual page 16

FusionModule1000B Water-Cooled IT Solution
Commissioning Guide

Water Used as the Secondary Refrigerant
Table 4-4
in the cooling system.
Table 4-4 Material preparations for the secondary refrigerant
Material
Water
Auxiliary water
refill devices
Before the Cooling Container is powered on, the power supply for the auxiliary water refill
devices should be prepared separately. After the Cooling Container is powered on, the
auxiliary water refill devices are connected to the automatic transfer switch (ATS) in the
Cooling Container PDB to obtain power.
Table 4-5 Water quality requirements
Item
pH value (at 25° C)
Conductivity (at
25° C)
Cl
SO
Acid consumption
(with pH 4.8)
Total hardness
Calcium hardness
SiO
Fe
Issue 02 (2017-01-10)
If the local lowest temperature recorded is 0° C or lower, an antifreeze should be used as
the secondary refrigerant. Typically, glycol solution is recommended.
describes the materials to be prepared if water is used as the secondary refrigerant
Requirement

Water quality meets the requirements described in

Z indicates the water volume (tons), calculated by the formula Z >
5.3 m
 The water refill pressure of the auxiliary water refill device should
be greater than 0.15 MPa and less than 1 MPa.
 The lift range of the water refill pump must be between 15 m and 20
m.
 The flow rate must range from 5 m
Allowed Value
6.5-8.0
< 800
-
< 200
-2
< 200
4
< 100
< 200
< 150
< 50
2
< 1.0
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4 Preparations for Power-On Commissioning
3 3
x 1.0 t/m .
Table 4-5.
3 3
/h to 8 m /h.
Unit
-
mS/cm
mg/L
mg/L
mg/L
mg/L
mg/L
mg/L
mg/L
10