Huawei FusionModule1000B V100R003C00, Commissioning Manual, Page: 17 / 111

FusionModule1000B Water-Cooled IT Solution
Commissioning Guide
4 Preparations for Power-On Commissioning
Issue 02 (2017-01-10) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
11
Item Allowed Value Unit
NH
4
+
< 1.0 mg/L

It is recommended that water quality be tested by local professionals.

If the water quality does not meet the requirements, add devices to process water or find
water sources that meet the requirements. Water that does not meet the requirements
influences the normal operating and service life of equipment.
Glycol Solution Used as the Secondary Refrigerant
Table 4-6 describes the materials to be prepared if glycol solution is used as the secondary
refrigerant in the cooling system.
Table 4-6 Material preparations for the secondary refrigerant
Material Requirement
Water  Water quality meets the requirements described in Table 4-7 .
 Z indicates the water volume (tons), calculated by the formula Z > 5.3
m
3
x 1.0 t/m
3
.
Glycol  Y indicates the volume concentration of glycol. For details about the
values, see
Table 4-8 .

W indicates the glycol volume (tons), calculated by the formula W =
5.3 m
3
x 1.2 t/m
3
x Y.
Auxiliary
water refill
devices  A 1.5 m
3
water tank should be equipped for the fixed-pressure device
for filling secondary refrigerant.
 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
3
/h to 8 m
3
/h.
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 ATS in the Cooling Container PDB to
obtain power.