Airwell EFL 100-3R410, Техническое руководство, Страница: 14 / 328

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2 - 4
Design of 3-WAY FLOW LOGIC
1. Model Selecting and Capacity Calculator
1-3. Design of Tubing Length
Ranges that Apply to Refrigerant Tubing Lengths and to Differences in Installation Heights
R410A distribution joint
Note: Do not use commercially available T-joints for the liquid tubing and parts.
* Be sure to use special R410A distribution joints (APR: purchased separately) for outdoor unit connections and tubing branches.
(ø9.52)
Balance tubing
Max. 40cm
Max. 40cm
For
extension
For
extension
T-joint tubing
(header joint system)
Solenoid valve kit
Explanation of symbols
Distribution joint
(APR: purchased separately)
Ball valve (field supply)
T-joint (field supply)
Solidly welded shut
(pinch weld)
1.
2. Main tubing length LM = LA + LB …
≤
80 m
Main distribution tubes LC – LH are selected according to the capacity after the
distribution joint.
3.
4. Sizes of indoor unit connection tubing 1 – 40 are determined by the connection
tubing sizes on the indoor units.
The outdoor connection main tubing (LD portion) is determined by the total capacity of the outdoor
units that are connected to the tube ends.
Items Marks Contents Length (m)
L1 Max. tubing length
Actual length 150
Equivalent length 175
Δ
L (L2 – L4)
Difference between max. length and min.
40
length from the No.1 distribution joint
LM Max. length of main tubing (at max. diameter) 80
1
,
2
~
40
Max. length of each distribution tube 30
L1+
1
+
2
+~
40
Total max. tubing length including length of
300
A
+
B
+LF+LG+LH each distribution tube (only narrow tubing)
L5
L3
Distance between outdoor units
10
H1
When outdoor unit is installed higher than indoor unit 50
When outdoor unit is installed lower than indoor unit 40
H2 Max. difference between indoor units 15
H3 Max. difference between outdoor units 4
L = Length, H = Height
Allowable tubing
length
>
>
Allowable elevation
difference
>
>
>
>
>
>
>
>
>
+
*3
2
Allowable length of
joint tubing T-joint tubing (field-supply); Max. tubing length between
the first T-joint and solidly welded-shut end point
Select the installation location so that the length and size of refrigerant tubing are within the allowable range shown
in the figure below.
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