4
Nominal High-Stage Capacities
With its 114 mm bore and stroke, the 450XL provides up to 30%
more capacity than similar size compressor units, all while main-
taining a favorable COP ratio.
Nominal high-stage ratings for the 450XL are shown in Figure 1
below.
Complete detailed ratings for all 450XL high-stage models, plus rat-
ings for 450XL booster compressors, special high suction pressure
compressors, and even integral two-stage compressors, are avail-
able for all major refrigerants either from the Vilter Sales Offi ces.
These ratings are establised under the following conditions:
•
1200
RPM
•
Saturated
suction
•
No
subcooling
•
No belt losses
•
All ratings are based on 60°C condensing temperature
•
Ratings are based on a 4-cylinder 450XL (454XL).
For cooling capacity and approximate kW fi gures of other 450XL
models, use a direct proportion to the number of cylinders of the
454XL. For example, use a 3.0 factor for determining the 12-cylin-
der 450XL cooling capacity and approximate kW fi gures.
4516XL Belt Drive Recip Pak with VILTech Micro-Controller
Figure 1
| High Stage capacities 450XL ratings
Figure 2
| Broad Applications
C
ooling Cap
ac
it
y (kW)
Ab
sorbed P
o
w
er (kW)
Saturated Suction Temperature °C
Suction Pressure (barg)
Disc
h
ar
ge Pre
ssure (bar
g)
Minimum
Allowable
Suction
Pressure (barg)
-0.8 barg
Max. Discharge 24.1 barg
10.5 bar
g M
ax
. Suc
tion
17.2 Bar ΔP M
ax
2.07 Bar ΔP Minimum f
or G
as Unlo
ading
0 Bar ΔP Minimum f
or Oil Unlo
ading
Maximum Motor kW
