Table 6 – AC / HP with Puron®
Refrigerant Long Line Description ft (m)
Beyond these lengths, long line accessories are required
AC
AC Liquid Line Size
Units On Same Level
1/4
No accessories needed within allowed lengths
5/16
120 (36.6)
3/8
80 (24.4)
HP
HP Liquid Line Size
Units On Same Level
3/8
80 (24.4)
See Table 8 for Maximum
Height and Equivalent
Length
Fig. 3 – Outdoor Unit Below Indoor Unit
•
Unit must be charged to 10
°
subcooling or nameplate subcooling, whichever is greater.
•
A TXV with 15 to 30% bleed must be installed at indoor unit when application qualifies as long line. See Table 8.
•
A crankcase heater must be installed on compressor when the application qualifies as long line. See Table 8.
•
Hard Start Kit (start capacitor and relay) must be installed in outdoor unit when the application qualifies as long line. See Table 8.
•
An inverted vapor- line trap must be installed at indoor unit. The top peak of trap must be greater than height of indoor coil.
•
Maximum actual liquid line length is up to See Table 7 for maximum total equivalent length.
•
Heat pump only – Bi- flow liquid line solenoid must be installed within 2 ft (0.61 m) of outdoor unit with arrow pointing towards outdoor unit.
•
Heat pump only – Adjust outdoor piston per Table 9.
•
Use vapor line per Tables 3.
•
Use liquid lines per Table 7.
Table 7 - Maximum Total Equivalent Length
**
Outdoor Unit Below Indoor Unit
Size
System
Type
Liquid
Line
Diameter
w/ TXV
Maximum Total Equivalent Length
{
: Outdoor unit BELOW Indoor
Vertical Separation ft (m)
0 --- 5
(0 --- 1.5)
6 --- 10
(1.8 --- 3.0)
11 --- 20
(3.4 --- 6.1)
21 --- 30
(6.4 --- 9.1)
31 --- 40
(9.4 --- 12.2)
41 --- 50
(12.5 --- 15.2)
51 --- 60
(15.5 --- 18.3)
61 --- 70
(18.6 --- 21.3)
71 --- 80
(21.6 --- 24.4)
18000
AC Only
1/4
150
150
125
100
100
75
--- ---
--- ---
--- ---
AC Only
5/16
150*
150*
150*
150*
150*
150*
150*
150*
150*
AC/HP
3/8
150*
150*
150*
150*
150*
150*
150*
150*
150*
24000
AC Only
1/4
75
75
75
50
50
--- ---
--- ---
--- ---
--- ---
AC Only
5/16
150*
150*
150*
150*
150*
150*
150*
125
100
AC/HP
3/8
150*
150*
150*
150*
150*
150*
150*
150*
150*
30000
AC Only
1/4
30
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
AC Only
5/16
150*
150*
150*
150*
125
100
75
--- ---
--- ---
AC/HP
3/8
150*
150*
150*
150*
150*
150*
150*
150*
150*
36000
AC Only
5/16
150*
150*
150*
100
100
100
75
--- ---
--- ---
AC/HP
3//8
150*
150*
150*
150*
150*
150*
150*
150*
150*
48000
AC/HP
3/8
150*
150*
150*
150*
150*
150*
150*
150*
--- ---
60000
AC/HP
3/8
150*
150*
150*
150*
150*
150*
110
--- ---
--- ---
* Maximum actual length not to exceed 100ft
**
Total equivalent length accounts for losses due to elbows or fitting. See the Table 2 for details.
--- --- = outside acceptable range
Table 8 - AC / HP with Puron®
Refrigerant Long Line Description ft (m)
Beyond these lengths, long line accessories are required
AC
AC Liquid Line Size
Outdoor Below Indoor
1/4
No accessories needed within allowed lengths
5/16
50 (15.2) vertical or 120 (36.6) total
3/8
35 (10.7) vertical or 80 (24.4) total
HP
HP Liquid Line Size
Outdoor Below Indoor
3/8
20 (6.1) vertical or 80 (24.4) total
Table 9 - Puron®
Refrigerant Heat Pump Outdoor Piston Change – Outdoor Unit BELOW Indoor Unit
Btuh
Vertical Separation ft (m) --- Outdoor BELOW Indoor Unit)
0 --- 19
(0 --- 5.8)
20 --- 29
(6.1 --- 8.8)
30 --- 39
(9.1 --- 11.9)
40 --- 49
(12.2 --- 14.9)
50 --- 59
(15.2 --- 18.0)
60 --- 69
(18.3 --- 21.0)
70 --- 80
(21.3 --- 24.4)
18,000
0
--- 1
--- 1
--- 2
--- 2
--- 2
--- 2
24,000
0
--- 1
--- 1
--- 2
--- 2
--- 3
--- 3
30,000
0
--- 1
--- 1
--- 2
--- 2
--- 3
--- 3
36,000
0
--- 1
--- 2
--- 2
--- 2
--- 3
--- 3
42,000
0
--- 1
--- 2
--- 2
--- 3
--- 3
--- 4
48,000
0
--- 1
--- 2
--- 2
--- 3
--- 3
—
60,000
0
--- 1
--- 2
--- 3
--- 3
—
—
NOTE:
(—) Indicates vertical separation exceeds allowable limits.
Example 1:
On a 4 ton system the outdoor unit is 60 ft (18.3 m) below the indoor unit. This is acceptable only if the total equivalent length is 230 ft (70.1 m) or less.
The heating piston must be re --- sized --- 3.
Example 2:
On a 3 --- ton system the outdoor unit is 80 ft (24.4 m) below the indoor unit. This is acceptable up to 250 ft (76.2 m) total equivalent length. The
heating piston must be re --- sized --- 3.
Page 28
Summary of Contents for 38C Series
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