Sterling A0554831 Manuel D’Utilisation
2-40 HP Portable Chillers
Chapter 7: Appendix
56 of 70
20 hp through 40 hp Remote Air-Cooled Portable Chillers
Nominal operating parameters for remote air-cooled models are 50ºF (10ºC) leaving water temperature at 2.4 gpm
per ton (9.1 lpm per 3.517 kW) with 95ºF (35ºC) ambient air. For 50 Hz applications, multiply capacity by 0.83.
Nominal 60 Hz capacity flow rate must be maintained.
per ton (9.1 lpm per 3.517 kW) with 95ºF (35ºC) ambient air. For 50 Hz applications, multiply capacity by 0.83.
Nominal 60 Hz capacity flow rate must be maintained.
Nominal cooling
Nom.
Com-
Refrigeration
Power in amps
e
capacity
c tons
water
pres-
Nom.
connections
460/3/60
f
no
1
2
flow
sor
pump
in. dia. ODS
1 pump
2 pumps
HP pump pump pump gpm
d
hp
hp Discharge Liquid
rated running rated running
20 19.4 18.4 18.0 46.5
2
@
10
5
13/8”
7/8”
43.9 37.6 47.0 40.7
25 23.8 22.8 22.4 57.2
2
@
13
5
13/8”
7/8”
55.9 42.1 59.0 45.2
30 29.2 28.2 27.8 70.2
2
@
15
5
13/8”
7/8”
60.0 50.4 63.2 53.5
40 36.9 35.4 35.0 88.6 40 7.5 15/8” 11/8”
81.9 68.8 85.0 58.0
c Based on 50ºF (10ºC) chilled water supply temperature and 95ºF (35ºC) ambient air. Optional additional process
pump hp reduces chiller capacity by 0.2 tons per hp (0.703 kW ref. cap. per 0.746 kW pump power).
d Based on 2.4 gpm per ton (9.1 lpm per 3.517 kW), nominal 1 pump.
e An optional oversized process pump adds to the total rated or running chiller amperage. To find the new total
e An optional oversized process pump adds to the total rated or running chiller amperage. To find the new total
chiller amperage, subtract the standard process pump amperage from the optional pump amperage (see Figure 1
on page 16), and add it to the chiller rated or running amperage.
on page 16), and add it to the chiller rated or running amperage.
f Multiply 460/3/60 amperage by 2.0 for 208-230/3/60 amperages; multiply by 0.8 for 575/3/60 amperages.
Remote air-cooled portable chillers come standard with mounting rails. Remote air-cooled portable
chillers are charged with 25 psi (172.4 kPa/1.72 bars) nitrogen for shipping purposes.
chillers are charged with 25 psi (172.4 kPa/1.72 bars) nitrogen for shipping purposes.
Com-
Process connections, in. NPT
Dimensions
Weights
HP
pressor 1 pump 2 Pump no pump, 1 pump, no
in inches
c
Dry
d Ship.
d Oper. d e
hp
to/from to/from no tank tank, to/from height width depth
lbs. lbs. lbs.
20
2 @ 10 2” / 3”
2.5” / 3”
2.0”
2” / 3”
43.3”
34.0” 100.7”
1,299 1,549
1,965
25
2 @ 13 2” / 3”
2.5” / 3”
2.0”
2” / 3”
43.3”
34.0” 100.7”
1,305 1,555
1,971
30
2 @ 15 2” / 3”
2.5” / 3”
2.0”
2” / 3”
43.3”
34.0” 100.7”
1,607 1,857
2,273
40
40
2.5” / 3” 2.5” / 3”
2.5”
2.5” / 3”
43.3”
34.0” 100.7”
2,243 2,470
2,909
c To convert to cm, multiply by 2.54. Add to height dimension based on mounting options.
d Weight is for standard chiller. Some optional features will increase weight.
e Operating weight is with a full 80-gallon (303 liter) reservoir tank of water.
d Weight is for standard chiller. Some optional features will increase weight.
e Operating weight is with a full 80-gallon (303 liter) reservoir tank of water.