Midea MHC-96HWD1N1 Installation Manual

7
Fig.4-12
Fig.4-13
Size of outdoor unit pipes and piping methods
Model Gas side Liquid side
MOUA-96HD1N1-R
MHC-96HWD1N1
(
A
)
φ 25.4mm φ 9.5mm
φ 25.4mm φ 9.5mm
Allowed length of refrigerant pipe and height difference
Outdoor unit
Max. pipe length L
≤ 50m
Height difference between indoor
unit and outdoor unit H≤25m
25m
50m
30m
Max. actual length of pipe (L)
Allowed
value
Height difference
between indoor
unit and outdoor
unit (H)
Outdoor
(upper)
Outdoor
(lower)
Max. height
difference
Indoor unit
Table.4-1
Table.4-2
4.9 Size Of Outdoor Unit Pipes And Piping
Methods
For one-way pipe whose length is no longer than 5m, please
refer to nameplate for refrigerant filling amount.No extra
refrigerant is needed.
NOTE
Charge pressured nitrogen after connecting indoor/outdoor unit
piping to do airtight test.
4.11 Airtight Test
Open all valves.
4.13 Refrigerant Replenishment Quantity
Table.4-3
9.5mm
φ
0.030(L-5) kg
Diameter of
liquid-side pipe
Refrigerant
replenishment quantity
Indoor unit
Make sure there is no any dirt or water before connectiong
the piping to the outdoor units.
Wash the piping with high pressure nitrogen, never use
refrigerant of outdoor unit.
4.10 Remove Dirt or Water in the Piping
Pressured nitrogen [ 4.3MPa (44kg/cm ) for R410A] should be
used in the airtight test.
2
Tighten high pressure/low pressure valves before applying
pressured nitrogen.
Apply pressure from air vent mouth on the hight pressure/low
pressure valves.
The high pressure/low pressure valves are closed when
applying pressured nitrogen.
The airtight test should never use any oxygen, flammable
gas or poisonous gas.
4.12 Air Purge with Vacuum Pump
Using vacuum pump to do the vacuum,never using refrigerant to
expel the air.
Vacuuming should be done from both liquid side and gas side
simultaneously.
One-way pipe whose length is longer than 5m, additional
refrigerant quantity should be calculated by pipe diameter and
length of outdoor and indoor unit liquid side pipe.For details,
please refer to table.4-3.
Remarks
L is the length
of One-way pipe
Please record and keep the refrigerant filling amount for future
use.

Midea MHC-96HWD1N1 Specifications

General

Brand	Midea
Model	MHC-96HWD1N1
Category	Air Conditioner
Language	English