Sterling A0554831 Manuel D’Utilisation
2-40 HP Portable Chillers
Chapter 7: Appendix
46 of 70
5 hp and 7.5 hp Air-Cooled Portable Chillers
Nominal operating parameters for 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.
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.
Nominal cooling
Water
Com- Nom.
Power in amps
f, 460/3/60 g
HP capacity
c in tons
flow pressor pump
Discharge air
e
1 pump
2 pumps
no pump 1 pump 2 pump gpm
d
hp hp
openings
cfm
h rated running rated running
5 4.8 4.6 4.5
11.6
5.0
1.0
1 @ 27”
3,400
14.0 11.0 14.9
11.9
7.5 6.6 6.4 6.3 15.7
7.5
1.0
1 @ 27”
5,100
18.2 14.6 19.1
15.5
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 Customer use of ductwork requires optional high-pressure fan for 5 hp to 15 hp (3.73 kW to 11.20 kW) models.
f An optional oversized process pump adds to the total rated or running chiller amperage. To find the new total
e Customer use of ductwork requires optional high-pressure fan for 5 hp to 15 hp (3.73 kW to 11.20 kW) models.
f 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.
g Multiply 460/3/60 amperage by 2.0 for 208-230/3/60 amperages; multiply by 0.8 for 575/3/60 amperages.
h To convert cfm to cmh, multiply by 1.699.
h To convert cfm to cmh, multiply by 1.699.
5 hp and 7.5 hp air-cooled chillers come standard with 4” (101 mm) swivel casters.
Com-
Process connections, in. NPT
Dimensions
Weights
pressor
1
2
no pump, 1 pump, no
in inches
c Dry
d Ship. d Oper. d e
hp pump
Pumps
no
tank tank,
to/from
height
width depth lbs.
lbs.
lbs.
5.0 1.5/2.0 2.0
1.5”
1.5” / 2.0”
82.3” 34.0” 54.7” 872 1,047 1,205
7.5 1.5/2.0 2.0
1.5”
1.5” / 2.0”
82.3” 34.0” 54.7” 922 1,097 1,255
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. Multiply lbs. by 0.454 to calculate Kg.
e Operating weight is with a full 20-gallon (76 liter) reservoir tank of water.
d Weight is for standard chiller. Some optional features will increase weight. Multiply lbs. by 0.454 to calculate Kg.
e Operating weight is with a full 20-gallon (76 liter) reservoir tank of water.