Environmental concerns and spiraling cost of refrigerants have led to the
development of direct drive remote air-cooled condensers with the LEVITOR
coil support system. This innovative design uses dedicated stainless steel tubes
and a unique coil support system to isolate refrigerant tubes from the unit. Coil
support is transferred from the fins to the stainless tubes and truncated tube
plates which ride freely in “C” channels. Tubes expand and contract without
interference. The result, contact and friction wear are eliminated.
Quiet by Design
LEVITOR coil design does more than just eliminate tube wear.
Sound reduction is an added benefit. Unlike traditional air-cooled condensers,
fan and coil vibration are isolated from the cabinet, so it is not transmitted to
the unit frame and building supports.
Low Sound Quietor Fan
n The “swept-wing” blade design offers lower noise
levels at the same fan speed. For example, the
QUIETOR fan blade on a 575-rpm motor will be
much quieter (8 dBA) than the old 575-rpm fan.
n Lower noise condensers can translate into savings
for your customer by minimizing the need of costly
noise barriers.
n Quietor fan not available on 24” models.
Computerized Circuiting
n Our computerized coil circuiting program is
designed to minimize the condenser refrigerant
charge and maximize sub-cooling. Every condenser
will be custom circuited to precisely meet your
application needs.
Modular Design
n Arranged for vertical or horizontal air discharge.
Multi-fan sections compartmented to allow
individual fan cycling while preventing off-fan
“windmilling”. Large clean-out access doors
standard.
Corrosion Resistant
n All models employ mill galvanized steel fan sections
and coil side baffles. Legs are heavy gauge mill
galvanized steel.
High Efficiency Coil
n Copper tubes are mechanically expanded into
corrugated full collared aluminum fins spaced 8,
10, or 12 per inch. Coils are helium leak and pressure
tested with 400 psig dry air, shipped pressurized
with dry nitrogen.
n Optional fin materials are copper or polyester
coated aluminum.
n Optional electrofin or heresite coil coatings.
n Multi-circuiting available.
Direct Driven Propeller Fans
n Quiet multi-bladed propeller fans provide uniform
air distribution through the coil. Venturi fan orifices
optimize efficiency.
Weather Resistant Fan Motors
n Outdoor condenser motors designed with ball
bearings inherent overheat protection in each
phase; shaft slingers; enclosure, hardware, and
lubrication for all weather conditions. Each motor
lead is wired to terminals in an electrical enclosure.
n Inverter duty suitable motors are standard.
Versatile Fan Cycling Control Methods
n Temperature fan cycling.
n Pressure fan cycling.
n Temperature and pressure fan cycling.
n Electronic relay boards.
n Variable speed header end fans.
LEVITOR II AIR-COOLED CONDENSER
Specifications subject to change without notice.
1
Levitor II Air-Cooled Condenser
EVAPORATOR
TEMP(˚F)
-40
-30
-20
-1005
10152025304050
90
1.66
1.57
1.49
1.42
1.36
1.33
1.31
1.28
1.26
1.24
1.22
1.18
1.14
100
1.73
1.62
1.53
1.46
1.40
1.37
1.34
1.32
1.29
1.27
1.25
1.21
1.17
110
1.80
1.68
1.58
1.50
1.44
1.41
1.38
1.35
1.33
1.31
1.28
1.24
1.20
120
2.00
1.80
1.65
1.57
1.50
1.46
1.43
1.40
1.37
1.35
1.32
1.27
1.23
130
***
1.64
1.56
1.52
1.49
1.46
1.43
1.40
1.37
1.31
1.26
140
****
1.62
1.59
1.55
1.52
1.49
1.45
1.42
1.35
1.29
CONDENSINGTEMPERATURE(˚F)
HERMETICCOMPRESSOR
FEET
1,0002,0003,0004,000
FACTOR
1.02
1.05
1.07
1.10
FEET
5,0006,0007,0008,000
FACTOR
1.12
1.15
1.17
1.24
ALTITUDE
EVAPORATOR
TEMP(˚F)
-30
-20
-100
1020304050
90
1.37
1.33
1.28
1.24
1.21
1.17
1.14
1.12
1.09
100
1.42
1.37
1.32
1.28
1.24
1.20
1.17
1.15
1.12
110
1.47
1.42
1.37
1.32
1.28
1.24
1.20
1.17
1.14
120
*
1.47
1.42
1.37
1.32
1.28
1.24
1.20
1.17
130
**
1.47
1.41
1.36
1.32
1.27
1.23
1.20
140
***
1.47
1.42
1.37
1.32
1.28
1.24
CONDENSINGTEMPERATURE(˚F)
OPENCOMPRESSOR
TABLE 1
TABLE 2
TABLE 3
* Beyond the normal limits for single-stage compressor application.
* Beyond the normal limits for single-stage compressor application.
EVAPORATOR
TEMP(˚F)
-40
-30
-20
-1005
10152025304050
90
1.66
1.57
1.49
1.42
1.36
1.33
1.31
1.28
1.26
1.24
1.22
1.18
1.14
100
1.73
1.62
1.53
1.46
1.40
1.37
1.34
1.32
1.29
1.27
1.25
1.21
1.17
110
1.80
1.68
1.58
1.50
1.44
1.41
1.38
1.35
1.33
1.31
1.28
1.24
1.20
120
2.00
1.80
1.65
1.57
1.50
1.46
1.43
1.40
1.37
1.35
1.32
1.27
1.23
130
***
1.64
1.56
1.52
1.49
1.46
1.43
1.40
1.37
1.31
1.26
140
****
1.62
1.59
1.55
1.52
1.49
1.45
1.42
1.35
1.29
CONDENSINGTEMPERATURE(˚F)
HERMETICCOMPRESSOR
TABLE 1
* Beyond the normal limits for single-stage compressor application.
EVAPORATOR
TEMP(˚F)
-40
-30
-20
-1005
10152025304050
90
1.66
1.57
1.49
1.42
1.36
1.33
1.31
1.28
1.26
1.24
1.22
1.18
1.14
100
1.73
1.62
1.53
1.46
1.40
1.37
1.34
1.32
1.29
1.27
1.25
1.21
1.17
110
1.80
1.68
1.58
1.50
1.44
1.41
1.38
1.35
1.33
1.31
1.28
1.24
1.20
120
2.00
1.80
1.65
1.57
1.50
1.46
1.43
1.40
1.37
1.35
1.32
1.27
1.23
130
***
1.64
1.56
1.52
1.49
1.46
1.43
1.40
1.37
1.31
1.26
140
****
1.62
1.59
1.55
1.52
1.49
1.45
1.42
1.35
1.29
CONDENSINGTEMPERATURE(˚F)
HERMETICCOMPRESS
OR
EVAPORATOR
TEMP(˚F)
-30
-20
-100
1020304050
90
1.37
1.33
1.28
1.24
1.21
1.17
1.14
1.12
1.09
100
1.42
1.37
1.32
1.28
1.24
1.20
1.17
1.15
1.12
110
1.47
1.42
1.37
1.32
1.28
1.24
1.20
1.17
1.14
120
*
1.47
1.42
1.37
1.32
1.28
1.24
1.20
1.17
130
**
1.47
1.41
1.36
1.32
1.27
1.23
1.20
140
***
1.47
1.42
1.37
1.32
1.28
1.24
CONDENSINGTEMPERATURE(˚F)
OPENCOMPRESSOR
TABLE 1
TABLE 2
* Beyond the normal limits for single-stage compressor application.
* Beyond the normal limits for single-stage compressor application.
System Selection
THR Total Heat of Rejection
n Condenser total heat of rejection (BTU/h) is the sum of the evaporator refrigeration effect and the heat of compression
which varies with compressor type and operating conditions.
THR Calculation Method
n THR = Open Reciprocating Compressor Capacity
(BTU/h) + (2545 x BHP)
n THR = Suction Gas Cooled Hermetic Reciprocating
Compressor Capacity (BTU/h) + (3413 x kW)
THR Estimated Method
n THR may be estimated by multiplying the rated
compressor BTU/h capacity by the compressor
operating condition factor shown in Table 1 or 2.
Multiply result by altitude factor when applicable.
EVAPORATOR
TEMP (˚F)
* Beyond the normal limits for single-stage compressor application.
Multi-Circuit Selection
n Condenser coils may be divided into several individual refrigeration circuits or systems; each sized for a specific refrigerant,
THR capacity and TD. Systems are tagged for identification from left to right; facing the connection end. Avoid 3 row
condensers. Add excess circuits to low TD sections next to high TD sections. Add excess circuits to outboard sections.
Temperature fan cycling is recommended with multi-circuited condensers.
COMP
NOM
HP
6
9
10
12
Selection
n LAVA-14410 Rated at THR of 457.3 MBH with R-404A at 15°F TD.
* Beyond the normal limits for single-stage compressor application.
FEET
1,000
2,000
3,000
4,000
90
1.66
1.57
1.49
1.42
1.36
1.33
1.31
1.28
1.26
1.24
1.22
1.18
1.14
FACTOR
1.02
1.05
1.07
1.10
BASED ON R-404A AT 15°FTD
SELECT
REF
FACTOR
÷
0.97
÷
1.00
÷
1.00
÷
1.02
UNIT THR REQ’D
FACTOR
x
x
x
x
TD
1.0
1.5
1.5
1.0
=
=
=
=
THR
56460
110318
125108
134418
426304
R-404A - 1.00
R-22 - 1.02
R-134a - 0.97
TABLE 1
HERMETIC COMPRESSO
CONDENSING TEMPERATURE (˚F)
100
110
120
1.73
1.80
2.00
1.62
1.68
1.80
1.53
1.58
1.65
1.46
1.50
1.57
1.40
1.44
1.50
1.37
1.41
1.46
1.34
1.38
1.43
1.32
1.35
1.40
1.29
1.33
1.37
1.27
1.31
1.35
1.25
1.28
1.32
1.21
1.24
1.27
1.17
1.20
1.23
R
130
*
*
*
1.64
1.56
1.52
1.49
1.46
1.43
1.40
1.37
1.31
1.26
TABLE 3
ALTITUDE
CAP
PER
CIRCUIT
13450
13450
13450
13450
REF FACTOR
CIRCUIT
REQ’D
4.2
8.2
9.3
10.0
FEET
5,000
6,000
7,000
8,000
#
CIR
4
10
10
10
34
SYSTEM
NUMBER
L TO R
1
2
3
4
TD FACTOR
10°F - 1.50
15°F - 1.00
20°F - 0.75
25°F - 0.60
FACTOR
ACTUAL
1.12
1.15
1.17
1.24
15.7
15.0
140
*
*
*
*
1.62
1.59
1.55
1.52
1.49
1.45
1.42
1.35
1.29
TD
°F
8.2
9.3
Levitor II Air-Cooled Condenser
Levitor Application
Locate Condensers no closer than their width from
walls or other condensers. Avoid locations near
exhaust fans, plumbing vents, flues or chimneys.
Parallel Condensers should be the same models
resulting in the same refrigerant side pressure drops.
Compressor discharge lines should have equal
pressure drops to each condenser.
Summer Charge based on 25% of condenser volume
with 90˚F liquid. Multiply by 1.1 for R-407A.
Winter Charge based on 90% of condenser volume
with -20˚F liquid. Multiply by 1.08 for R-407A.
Receiver Capacity should be sized to store condenser
summer charge, plus the condenser low ambient
allowance, plus the evaporator charge, plus an
allowance for piping and heat reclaim coil charges.
REFRIGERANT LINE CAPACITY DATA
COPPER
LINE
SIZE
O.D.
5/8
7/8
1-1/8
1-3/8
1-5/8
2-1/8
2-5/8
COMPRESSOR DISCHARGE LINE
R-404A
R-407A
0.5
2.0
4.5
7.0
15.0
30.0
45.0
LINE CAPACITY IN TONS
R-134A
1.0
3.0
6.5
15.0
20.0
45.0
75.0
0.5
2.0
4.5
7.0
11.0
28.0
43.0
Compressor Discharge lines should be sized to
minimize pressure drops and maintain oil return gas
velocities. Each connection should be looped to the
top of the condenser.
Gravity Liquid Drain Lines should drop from each
outlet as low as possible before headering or running
horizontally. Pitch downhill to receiver.
Off-Line Coil Sections will have refrigerant pressures
corresponding to the ambient. Check valves or
isolating valves should be installed in the liquid line
drains to prevent refrigerant migration and receiver
pressure loss.
See Installation and Operating instructions for piping, holdback and fan cycling details.
LBS. OF REFRIGERANT
CONDENSER TO RECEIVER
LIQUID LINE 100'
R-404A
3.0
6.0
10.4
16.0
23.0
40.0
62.0
R-407A
3.6
7.4
12.7
19.2
29.0
47.0
73.0
R-134A
3.7
7.7
13.0
20.0
28.5
46.0
72.0
LIQUID PER 100'
R-404A
11.0
22.0
36.0
55.0
78.0
138.0
212.0
OF LENGTH
R-407A
13.0
25.0
42.0
64.0
90.0
160.0
245.0
R-134A
13.0
26.0
43.0
65.0
92.0
163.0
250.0
n Capacity is compressor suction tons for application between -40°F and +40°F suction at condensing
temperatures between 80°F and 120°F sat.
n For multiple or unloading compressor applications, the vertical discharge riser from the compressor
may need to be one size smaller.
n This table data is only to be used as a guide. For exact values, please calculate to your specific job line
lengths and design pressure/temp values using ASHRAE handbook or ARI refrigerant tables.
For units using 380/3/50, multiply capacity by 0.90.
LEVITOR II AIR-COOLED CONDENSER
6
Specifications subject to change without notice.
CHARGE CORRECTION FACTOR
NOTE: Ratings are based on 85°F-115°F entering air temperature and 0˚F sub-cooling.
The temperature difference is between the saturated condensing temp. and the entering air temp.
to the condenser.