ActronAir ELY620T - Piping; Piping Connection

Installation and Commissioning Guide
Split Tri-Capacity
31
Installation and Commissioning Guide 500-700 Tri-Capacity Split Ducted
Doc. No.0525-098 Ver. 2 210330
14. PIPING
14.01. Piping Connection
NOTES
The units described in this guide use R-410A refrigerant which operate at approximately 1.6 times higher than a similar systems
using R-22. When installing equipment using R-410A refrigerant, there are number of standards that must be met:
• A polyolester (POE) oil is used for R-410A.
• It is important to work with absolute cleanliness.
• Brazing must be done with the use of Nitrogen to avoid carbon deposits into the pipes.
• The system must be evacuated thoroughly to 500 microns (see evacuation procedure).
• The system must always be charged with R-410A refrigerant in liquid state.
Maximum allowable total equivalent field pipe length is 75 metres, see diagram below. This includes all the equivalent pipe
fitting loses and vertical height difference. Vertical height difference must not exceed 20 metres.
Table below shows the equivalent straight pipe length of elbow fittings.
EQUIVALENT STRAIGHT PIPE LENGTH OF ELBOW FITTINGS M
Pipe size Nominal
Diameter
90
o
Long Radius
Elbow
90
o
Short Radius
Elbow
45
o
Long Radius
Elbow
45
o
Short Radius
Elbow
9.5 (3/8”)
0.24 0.36 0.09 0.14
12.7 (1/2")
0.27 0.41 0.12 0.19
15.9 (5/8”)
0.30 0.45 0.15 0.23
19.1 (3/4”)
0.40 0.60 0.18 0.27
22.2 (7/8”)
0.46 0.69 0.21 0.32
25.4 (1”)
0.52 0.78 0.24 0.36
28.6 (1-1/8”)
0.55 0.83 0.27 0.41
Selected field pipe sizes must match the recommended sizes in table above. If the installation requires different field pipe
diameter due to different application condition other than recommended, contact ActronAir for advice.
Most of unit pipe connections are factory swaged to easily fit to the recommended field pipe diameter.
When it is required to install other refrigeration devices, such as refrigerant driers, solenoid valves, etc. include the
equivalent straight pipe length of the devise in the calculation of total equivalent field pipe length.
INDOOR
UNIT
A = EQUIVALENT PIPE LENGTH,
75 metres (max)
B = VERTICAL HEIGHT,
20 metres (max)
A
B
OUTDOOR
UNIT