4
LONG LINE APPLICATIONS
An application is considered Long Line, when the refrigerant level in the system requires the use of accessories to maintain acceptable
refrigerant management for systems reliability. See Accessory Usage Guideline table for required accessories. Defining a system as long line
depends on the liquid line diameter, actual length of the tubing, and vertical separation between the indoor and outdoor units.
For Air Conditioner systems, the chart below shows when an application is considered Long Line.
AC WITH PURON
r
REFRIGERANT LONG LINE DESCRIPTION ft (m)
Beyond these lengths, long line accessories are required
Liquid Line Size
Units On Same Level
Outdoor Below Indoor
Outdoor Above Indoor
1/4
No accessories needed within allowed
lengths
No accessories needed within allowed
lengths
175 (53.3)
5/16
120 (36.6)
50 (15.2) vertical or 120 (36.6) total
120 (36.6)
3/8
80 (24.4)
35 (10.7) vertical or 80 24.4) total
80 (24.4)
Note:
See Long Line Guideline for details
VAPOR LINE SIZING AND COOLING CAPACITY LOSS
Acceptable vapor line diameters provide adequate oil return to the compressor while avoiding excessive capacity loss. The suction line
diameters shown in the chart below are acceptable for AC systems with Puron refrigerant:
Vapor Line Sizing and Cooling Capacity Losses — Puron
r
Refrigerant 2--Stage Air Conditioner Applications
Unit
Nominal
Size (Btuh)
Maximum
Liquid
Line
Diameters
(In. OD)
Vapor Line
Diameters
(In.) OD
Cooling Capacity Loss (%)
Total Equivalent Line Length ft. (m)
26---50
(7.9---15.2)
51---80
(15.5---24.4)
81---100
(24.7---30.5)
101---125
(30.8---38.1)
126---150
(38.4---45.7)
151---175
(46.0---50.3)
176---200
(53.6---60.0)
201---225
(61.3---68.6)
226---250
(68.9---76.2)
024
2---Stage
Puron
AC
3/8
5/8
0
1
1
2
3
3
4
4
5
3/4
0
0
0
0
1
1
1
1
1
036
2---Stage
Puron
AC
3/8
5/8
1
2
4
5
6
7
9
10
11
3/4
0
0
1
1
2
2
3
3
4
7/8
0
0
0
0
1
1
1
1
2
048
2---Stage
Puron
AC
3/8
3/4
1
2
2
3
4
5
6
7
7
7/8
0
1
1
2
2
2
3
3
3
1---1/8
0
0
—
—
—
—
—
—
—
060
2---Stage
Puron
AC
3/8
3/4
1
2
4
5
6
7
9
10
11
7/8
0
1
2
2
3
4
4
5
5
1---1/8
0
0
0
1
1
1
1
1
1
Applications in this area may be long line and may have height restrictions. See the
Residential Piping and Long Line Guideline
.
— Applications in this area are not recommended due to insufficient oil return
PHYSICAL DATA
Model
187BNA
180BNA
Unit Size --- Series
024---A
036---A
048---A
060---A
036---A
Operating Weight lb (kg)
222 (101)
224 (102)
324 (147)
334 (152)
306 (139)
Shipping Weight lb (kg)
261 (118)
263 (119)
381 (173)
391 (177)
372 (169)
Compressor Type
2---Stage Scroll
REFRIGERANT
Puron (R---410A)
Control
TXV (Puron Hard Shutoff)
Charge lb (kg)
6.63 (3.01)
6.88 (3.12)
11.63 (5.27)
15.13 (6.86)
13.37 (6.06)
COND FAN
Propeller Type, Direct Drive
Air Discharge
Vertical
Air Qty (CFM)
3100
3400
4300
4450
3100 / 3600
Motor HP
1/10
1/5
1/4
1/4
1/5
Motor RPM
800
800
800
800
582 / 690
COND COIL
Face Area (Sq ft)
21.56
21.56
25.15
30.18
25.15
Fins per In.
25
25
20
20
20
Rows
1
1
2
2
2
Circuits
4
4
7
8
7
VALVE CONNECT. (In. ID)
Vapor
3/4
7/8
7/8
7/8
7/8
Liquid
3/8
3/8
REFRIGERANT TUBES (In. OD)
Rated Vapor*
3/4
7/8
1---1/8
1---1/8
7/8
Liquid
3/8
3/8
*Units are rated with 25 ft (7.6 m) of lineset length. See
Vapor Line Sizing and Cooling Capacity Loss
table when using other sizes and lengths of lineset.
187B
/180B
