Bryant 619E Preliminary Product Data page 21

3) For line lengths over 50 ft (018,024 only):
a) A crankcase heater should be added to scroll
compressor units (all non-scroll compressor units
have crankcase heaters as standard). Crankcase
heaters help prevent refrigerant migration to the
compressor during the off cycle.
b) Any time the equivalent line length is over 100 ft,
a liquid line solenoid must be used. A liquid line
solenoid may also be required for vertical lift ap-
plications over 25 ft. See Step h) on page 22.
c) The accessory wind baffle is recommended.
d) The Effective Capacity Loss table on this page
provides the estimated percentage of nominal
cooling capacity losses based on the standard re-
quired vapor line size versus what is selected for
long-line applications.
Select the desired vapor line size from the Effec-
tive Capacity Loss table based on equivalent ft
and desired vapor line size.
Subtract the nominal percentage loss from the
unit cooling capacities for the given indoor and
outdoor combination.
COOLING ONLY SYSTEM PISTON GUIDE AND REFRIGERANT CHARGES
INDOOR
UNIT
619E
009
012
018
024
*Charge based on 25 ft of interconnecting tubing. Charge may need to be added
for longer tubing runs or when used with certain fan coils. Check unit nameplate
for required charge.
HEAT PUMP SYSTEM PISTON GUIDE AND REFRIGERANT CHARGES
UNIT
Indoor
619E
009
012
018
024
*Charge based on 25 ft of interconnecting tubing. Charge may need to be added
for longer tubing runs or when used with certain fan coils. Check unit nameplate
for required charge.
NOMINAL STANDARD
UNIT SIZE* VAPOR LINE (in.)
⁄
5
8
18,000
5 ⁄
8
5 ⁄
8
24,000
5 ⁄
8
*Nominal cooling capacity of the unit being specified.
†The vapor line diameter that may be selected for long-line application. If smaller
vapor lines than are specified in the table are selected, a larger capacity loss will
occur. If larger vapor lines are selected, refrigerant oil return will be impaired due
to velocity loss.
**Not recommended due to excessive loss of capacity.
APPLICATION DATA (cont)
OUTDOOR
UNIT
538
C 009
C 012
A 018
A 024
COOLING
PISTON
Outdoor
538D
009
012
018
024
EFFECTIVE CAPACITY LOSS
LONG-LINE
VAPOR LINE (in.)†
⁄
5
8
3 ⁄
4
5 ⁄
8
3 ⁄
4
FITTING LOSS IN EQUIVALENT FT FOR ELBOWS
90-DEGREE
TUBE SIZE
O.D. (in.)
5 ⁄
8
3 ⁄
4
CHATTLEFF COMMON PISTON SIZES
PISTON SIZE
32
33
35
36
37
38
39
40
41
42
43
45
47
49
51
52
PISTON REQUIRED
(Size)
None
None
49
57
NOTES:
1. All 018,024 pistons are Chattleff type.
2. All cooling units have a full factory charge.
3. Service valves are front-seating type.
HEATING
PISTON
SIZE SIZE
30 32
42 42
51 47
49 52
NOTES:
1. All 009,012 pistons are Aeroquip type. All 018,024 pistons are Chattleff type.
2. The 538D heat pumps have a holding charge only as shipped from the
factory.
PERCENT COOLING CAPACITY LOSS
50 ft 75 ft 100 ft
1 3 4
0 0 1
2 5 8
0 0 1
NOTE: Long-line applications (50 ft and longer) are not permitted on 009, 012
systems.
21
90-DEGREE
SHORT LONG
RADIUS RADIUS
1.6 1.0
1.8 1.2
PISTON SIZE PISTON SIZE
53
55
57
59
61
62
63
65
67
68
70
71
73
74
76
78
CHARGE
(Lb)*
1.5
1.8
4.6
5.3
REQUIRED
SYSTEM
CHARGE (Lb)*
1.5
2.0
5.0
5.1
125 ft 150 ft 175 ft
5 7 9
1 2 2
10 13 **
2 3 4
45-DEGREE
SHORT
RADIUS
0.8
0.9
80
81
82
84
86
88
89
90
92
93
96
98
101
104
—
—
200 ft
10
3
**
5