Pipe Insulation - Samsung AM CXV Series Installation Manual

Pipe insulation

Insulating the refrigerant pipes and
branch joints
• Check for gas leakage before completing (the hose and pipe
insulation) and if there is no sign of leakage, make sure to
insulate the pipes and hoses.
• Use EPDM material insulator that meets the following
conditions.
Test item
Density
Dimensional change rate
by heat
Absorption rate
Thermal conduction rate
Moisture transpiration
factor
Moisture transpiration
grade
Formaldehyde dispersion
Oxygen rate
Selecting the refrigerant pipe insulator
• Insulate the gas pipe and liquid pipe by referring to the
thickness of insulator for each pipe size.
• The standard condition is; temperature at 30℃ (89.6℉),
humidity less than 85%. If case if the humidity is higher, you
must increase the size by one grade as stated in below table.
Diameter of
refrigerant
[30 °C, 85 %]
Pipe
pipe
mm inch
6.35~ 1/4~
9.52 3/8
Liquid
12.7~
1/2~2
50.8
6.35 1/4
9.52~
3/8~1
25.4
Gas
28.58~ 1 1/8~1
44.45 3/4
50.8 2
To install in any of the following places or environments, use the
1)
same insulating material used in general conditions.
– An air-conditioned place where humidity is high inside the
ceiling tiles
– A space where temperature/humidity difference is large
between the upper and lower air due to a high ceiling
(e.g., a large chapel/church, cinema, split-level open lobby,
lecture hall with theatre seating)
– A corridor or passageway with no air conditioning system
– An old building with poor insulation
DB68-11976A-00_IM_DVM S2 Outdoor_SA_EN_.indd 41 DB68-11976A-00_IM_DVM S2 Outdoor_SA_EN_.indd 41
Unit Standard
g/cm 0.048~0.096
3
% Below -5
g/cm Below 0.005
3
W/m·K Below 0.037
ng/(m ·s·Pa) Below 15
2
g/(m ·24h) Below 15
2
There should be
mg/L
none
% Over 25
Insulator (Cooling·Heating)
High humidity ²⁾
General ¹⁾
[30 °C, over
Remarks
85 %]
EPDM, NBR
mm inch mm inch
9 3/8 9 3/8
13 1/2 13 1/2
Heat resisting
13 1/2 19 3/4
temperature
over 120°C
19 3/4 25 1
19 3/4 32 1 1/4
25 1 38 1 1/2
[Under the following conditions, a gas pipe of Ø9.52 to Ø25.40
mm(3/8inch to 1inch) and plumbing of thichkness 13mm(1/2)
can be used]
– A general town centre building (e.g., an apartment building,
dwelling house, lecture hall, educational institute building,
office, shopping complex)
– A structure with an exposed ceiling
– A structure with ceiling tiles and a ventilation system
– A structure where there is no inflow of air from the outside
due to plumbing laid inside a wall
※ Even in the above conditions, if humidity is very high or
condensation is expected to occur, change the installation
thickness for high humidity.
To install in any of the following places or environments, use the
2)
same insulating material used in a place with high humidity.
<Geographical conditions>
– A location with high humidity, such as a seaside area, a hot
spring area, an area near a pond/river or a ridge (a building
that is partially covered in earth and sand)
– A location where morning dew occurs frequently (e.g., once
every three days)
<Purpose of the building>
– Sauna, swimming pool or restaurant
<Structural conditions of the building>
– Installation inside a ceiling that is not air-conditioned
where there is inflow of a large amount of moisture
(plumbing installed along a corridor or near the entrance of
a hall of residence or studio flat)
– A place where humidity is high due to an insufficient
ventilation system in the space where plumbing is installed
– A room on a semi-basement floor
• If you are not sure which insulating material to use, choose
material used in a place with high humidity.
• If the purpose of the room is subject to change, reconsider the
thickness of insulating material.
• Use the specified insulating material only.
Insulate the refrigerant pipe
• Make sure to insulate the refrigerant pipe, branch joint,
distribution header, and the connection part of the pipes.
• If you insulate the pipes, condensed water will not fall from the pipes.
• Check if there are any cracks on the insulation at the bent part
of the pipe.
Insulator
Gas side
pipe
Liquid side pipe
Insulator
Indoor unit
Install the insulation to be overlapped
Fix securely without any gap.
Clamp
Insulator
41
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2022-09-13 오전 9:34:20 2022-09-13 오전 9:34:20