LG ARUN040GSS0, Руководство пользователя

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MULTI V S
Outdoor Unit
7. Capacity Correction Factor
78
Product Data
Note
1. These figures illustrate the rate of change in capacity of a standard indoor unit system at maximum load under
standard conditions.(Moreover, under partial load conditions there is only a minor deviation from the rate of
change in capacity shown in the above figures.)
2. With this outside unit, evaporating pressure constant control when cooling, and condensing pressure constant
control when heating is carried out.
3. If heat insulation of piping is insufficient, heat loss will become larger and capacity will decrease.
4. Method of calculating cooling / heating capacity : maximum cooling / heating capacity of outside units
= cooling / heating capacity of outside units obtained from capacity table X capacity correction factor due to
piping length to the farthest indoor unit
5. Equivalent piping length for Y Branch and other pipes can be calculated with following table.
• * : HR unit is applicable only for Heat Recovery models.
6. When the equivalent length between outdoor unit and the farthest indoor unit is 90m or more, the diameter of
main pipe must be increased. (Liquid and Gas pipes are increased.)
Refer to the table (Refrigerant pipe diameter from outdoor unit to first branch.) in the 'installation of outdoor units'
part.
7. Read cooling / heating capacity rate of change in the above figures based on the following equivalent length. :
overall equivalent length = (equivalent length of main pipe) X correction (equivalent length after first
branching)
mm
(inch)
Ø6.35
(1/4)
Ø9.52
(3/8)
Ø12.7
(1/2)
Ø15.8
8 (5/8)
Ø19.0
5 (3/4)
Ø22.2
(7/8)
Ø25.4
(1)
Ø28.58
(1-1/8)
Ø31.8
(1-1/4)
Ø34.9
(1-3/8)
Ø38.1
(1-1/2)
Ø41.3
(1-5/8)
Ø44.5
(1-3/4)
Ø53.98
(2-1/8)
Elbow (m) 0.16 0.18 0.2 0.25 0.35 0.4 0.45 0.5 0.55 0.6 0.65 0.7 0.75 0.85
Y Branch
(m)
0.5
Header
(m)
1
HR Unit*
(m)
2.5
Rate of change
(object piping)
Correction factor
standard size size increase
Cooling(Gas pipe) 1 0.5
Heating(Liquid pipe) 1 0.2
• (Cooling) Overall equivalent length
= 80 m x 0.5 + 40 m = 80 m
• (Heating) Overall equivalent length
=80 m x 0.2 + 40 m = 56 m
The rate of change in Cooling capacity when HU
= 0m is thus approximately 0.85
Heating capacity when HU
= 0m is thus approximately 1.00
Outdoor Unit
Equivalent length
80m
Equivalent length
40m
Branch
Indoor Unit
Indoor Unit
Gas pipe
Liquid pipe