Huawei NetCol5000-A035 Quick Manual page 19

Item Check That
The cabinet is securely fixed on the rack at the bottom. Foreign matter
Cabinet
inside the cabinet such as cable ties and sundries has been cleaned up.
The compressor sheet metals are removed and the bolts are secured.
Compressor Coils for the return oil solenoid valve and liquid solenoid valve are securely
fixed.
Sheet metals for fixing the float are removed, the float is properly secured,
Float
wiring terminals are connected, and the float flexibly responds.
The humidifier water supply pipe and drainpipe are properly connected and
Humidifier
secured, and do not leak.
Fan The fan is secured, without foreign matter inside.
Differential Cable ties for the differential pressure tube are securely tightened, and the
pressure differential pressure tube is free from foreign matter, blocks, and obvious
switch bends.
The fan blades do not interfere and protective cardboard for fins are
removed. Bonnets of needle valves and water-proof connectors are
Outdoor unit tightened. Cables are protected by tubes and the cable outlet faces
downward. Glue is applied to the waterproof connector when the outdoor
unit is placed vertically and the waterproof connector faces upward.
9
Calculating the Amount of Refrigerant and Extra Refrigerant Oil
Copper pipe outer diameter
5/8 in.
7/8 in.
One-way pipe length = Straight pipe equivalent length + Length of straight pipes between indoor
and outdoor units. The one-way pipe length should be 60 m at most. If the actual length exceeds
60 m, contact Huawei technical support.
Refrigerant Charge of NetCol5000-A035
9.1
One-Way
Pipe
Refrigerant Charge
Length
(L)
Standard charge
≤ 10 m
(kg)
Refrigerant charge
=Standard charge
> 10 m
+ additional charge
(kg)
Straight Pipe Equivalent Length
90-degree bend
0.3 m
0.42 m
NetCol500-036
NetCol500- & low-
A036 temperature
Component
14 35
= 14 + 0.14 = 35 + 0.14 x (L
x (L - 10) - 10)
19
Result
□Passed
□Failed
□Passed
□Failed
□Passed
□Failed
□Passed
□Failed
□Passed
□Failed
□Passed
□Failed
□Passed
□Failed
180-degree bend
0.6 m
0.8 m
NetCol500-A072 without
copper tube protection sheet
metal
16
= 16 + 0.14 x (L - 10)