Allied Lennox 4AC16LT Series 설치 지침 매뉴얼 - 페이지 4
{카테고리_이름} Allied Lennox 4AC16LT Series에 대한 설치 지침 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Allied Lennox 4AC16LT Series 20 페이지. Split system air conditioner
페이지 인쇄If ANY refrigerant tubing is required to be buried by state
or local codes, provide a 6 inch vertical rise at service
valve.
Placement
Be aware that some localities are adopting sound
ordinances based on how noisy the unit is at the neighbor's
home, not at the original installation. Install the unit as far
as possible from the property line. When possible, do not
install the unit directly outside a bedroom window. Glass
has a very high level of sound transmission. Figure 4
shows how to place the outdoor unit and line set to reduce
line set vibration.
Line Set Isolation
The following illustrations demonstrate procedures that
ensure proper refrigerant line set isolation. Figure 5 shows
how to install line sets on horizontal runs. Figure 6 shows
how to make a transition from horizontal to vertical. Figure
7 shows how to install line sets on vertical runs.
Liquid Line
Line Set Length and Size
Btuh
12 ft.
25 ft.
24,000
3/8
3/8
36,000
3/8
3/8
48,000
3/8
3/8
60,000
3/8
3/8
Suction Line
Line Set Length and Size
Btuh
12 ft.
25 ft.
24,000
3/4
3/4
36,000
7/8
7/8
48,000
7/8
7/8
60,000
1-1/8
1-1/8
For lines longer than 50 ft., refer to long line set guidelines.
Table 2. Refrigerant Line Set Diameters (in.)
Brazing Connection Procedure
1. Cut ends of refrigerant lines square (free from nicks or
dents). Debur the ends. The pipe must remain round;
do not pinch end of line.
2.
Before making line set connections, use dry nitrogen
to purge the refrigerant piping. This will help to prevent
oxidation and the introduction of moisture into the
system.
Page 4 of 20
CAUTION
50 ft.
75 ft.
3/8
3/8
3/8
3/8
3/8
1/2
3/8
1/2
50 ft.
75 ft.
3/4
3/4
7/8
7/8
7/8
1-1/8
1-1/8
1-1/8
3.
Use silver alloy brazing rods (5% or 6% silver alloy
for copper-to-copper brazing or 45% silver alloy for
copper-to-brass or copper-to-steel brazing) which are
rated for use with R410A refrigerant.
4.
Remove the Schrader core assemblies before brazing
to protect them from damage due to extreme heat.
Replace the cores when brazing is complete.
5.
Remove light maroon washers from service valves
and shield light maroon stickers to protect them during
brazing. Wrap a wet cloth around the valve body and
copper tube stub to protect it from heat damage.
100 ft.
3/8
1/2
1/2
Figure 4. Outside Unit Placement & Installation
1/2
6.
Braze the line set to the service valve. Quench the
joints with water or a wet cloth to prevent heat damage
to the valve core and opening port. The tube end must
100 ft.
stay bottomed in the fitting during final assembly to
ensure proper seating, sealing, and rigidity.
7/8
1-1/8
7.
Install the thermal expansion valve which is sold
separately and which is approved for use with R410A
1-1/8
refrigerant in the liquid line at the indoor coil (see
1-1/8
Refrigerant Metering Device section).
When flushing existing line set and/or indoor coil, be
sure to empty all existing traps. Residual mineral oil
can act as an insulator, preventing proper heat transfer.
It can also clog the thermal expansion valve, reducing
system performance and capacity. Failure to properly
flush system as explained in these instructions will void
warranty.
Issue 1827
CAUTION
506467-01