Sterlco 30RA Outdoor Air Cooled Central Chillers 10-60 Tons - Manual (Page 4)

4
Table 1A — Physical Data, 30RA — 60 Hz English
Table 1B — Physical Data, 30RA — 50 Hz English
LEGEND
TXV — Thermostatic Expansion Valve
*Flow switch and strainer are standard on all units, with or without hydronic package.
NOMINAL INPUT HP FOR COMPRESSORS
UNIT 30RA 010 015 018 022 025 030 035 040 045 050 055
REFRIGERANT TYPE R-22, TXV Controlled System
Refrigerant Charge (lb) Ckt A/Ckt B 18/— 27/— 36/— 37/— 38/— 48/— 44/30 45/30 44/44 45/45 55/55
COMPRESSORS Scroll, Hermetic
Quantity 1 1 2 2 2 2 3 3 4 4 4
Speed (Rpm) 3500
(Qty) Ckt A
(1) SM125 (1) SM185 (2) SM110
(1) SM115,
(1) SM160
(2) SM160 (2) SM185
(1) SM115,
(1) SM160
(2) SM160
(1) SM125,
(1) SM160
(2) SM160 (2) SM185
(Qty) Ckt B
— — — — — — (1) SM185 (1) SM185
(1) SM125,
(1) SM160
(2) SM160 (2) SM185
Oil Charge (Compressor/Pt) SM110/5.7, SM115/6.7, SM125/6.7, SM160/7.0, SM185/11.6
No. Capacity Steps
Standard 1 1 2 2 2 2 3 3 4 4 4
Optional (Maximum) 2 2 3 3 3 3 4 4 5 5 5
Minimum Capacity Step (%)
Standard 100 100 50 42 50 50 25 32 22 25 25
Optional 69 79 32 27 38 39 16 24 15 19 20
COOLER Welded, Direct-Expansion Plate Heat Exchanger
Net Fluid Volume (gal) 1.12 1.61 1.86 2.41 2.84 3.40 6.30 7.00 6.55 7.44 8.56
Maximum Refrigerant Pressure (psig) 450 450 450 450 450 450 450 450 450 450 450
Maximum Fluid Side Pressure
Without Pump(s) (psig)
150 150 150 150 150 150 150 150 150 150 150
Maximum Fluid Side Pressure
With Pump(s) (psig)
150 150 150 150 150 150 150 150 150 150 150
FLUID CONNECTIONS (in.)
Inlet and Outlet, FPT 2 2 2 2 2 2 2 1 / 2 2 1 / 2 2 1 / 2 2 1 / 2 2 1 / 2
Drain (NPT) 1 / 2
1 / 2
1 / 2
1 / 2
1 / 2
1 / 2
1 / 2
1 / 2
1 / 2
1 / 2
1 / 2
CONDENSER FANS
Standard Low Noise Type
Fan Speed (Rpm)
Standard/Low Noise
1140/570 1140/570 1140/570 —/850 —/850 —/850 —/850 —/850 —/850 —/850 —/850
No. Blades...Diameter (in.)
Ckt A/Ckt B
15...30/— 15...30/— 15...30/— 11...30/— 11...30/— 11...30/—
11...30/
11...30
11...30/
11...30
11...30/
11...30
11...30/
11...30
11...30/
11...30
No. Fans...Total kW 1...1.8 1...1.8 1...1.8 2...2.0 2...2.0 2...2.0
2...2.0 (A),
1...1.8 (B)
2...2.0 (A),
1...1.8 (B)
4...4.0 4...4.0 4...4.0
Total Airflow (Cfm) 10,500 10,500 10,500 13,600 13,600 14,500 21,000 21,000 27,300 27,300 29,000
CONDENSER COILS
Quantity...No. Rows 1...2 1...3 1...3 1...3 1...3 1...3 2...3 2...3 2...3 2...3 2...3
Total Face Area (sq ft) 23 23 23 32 32 40 55 55 64 64 80
HYDRONIC MODULE (Optional)* Pump(s), Strainer W/Blowdown Valve, Expansion Tank, Pressure Gages, Drain and Vent Plugs, Flow Switch, and Balance Valve
Pump Single or Dual, Close-Coupled Centrifugal Pump(s), 3500 Rpm
Expansion Tank Volume (gal) 4.4 10.3
UNIT 30RA 010 015 018 022 025 032 035 042 045
REFRIGERANT TYPE R-22, TXV Controlled System
Refrigerant Charge (lb) Ckt A/Ckt B 18/— 27/— 36/— 37/— 38/— 44/30 44/30 44/44 44/44
COMPRESSORS Scroll, Hermetic
Quantity 1 2 2 2 2 3 3 4 4
Speed (Rpm) 2900
(Qty) Ckt A
(1) SM160 (2) SM110 (2) SM125 (2) SM160 (2) SM185
(1) SM115,
(1) SM160
(2) SM185 (2) SM160 (2) SM185
(Qty) Ckt B — — — — — (1) SM185 (1) SM185 (2) SM160 (2) SM185
Oil Charge (Compressor/Pt) SM110/5.7, SM115/6.7, SM125/6.7, SM160/7.0, SM185/11.6
No. Capacity Steps
Standard 1 2 2 2 2 3 3 4 4
Optional (Maximum) 2 3 3 3 3 4 4 5 5
Minimum Capacity Step (%)
Standard 100 50 50 50 40 25 33 25 25
Optional 71 28 31 35 37 15 25 18 19
COOLER Welded, Direct-Expansion Plate Heat Exchanger
Net Fluid Volume (gal) 1.12 1.61 1.86 2.41 2.84 5.77 6.55 6.77 6.55
Maximum Refrigerant Pressure (psig) 450 450 450 450 450 450 450 450 450
Maximum Fluid Side Pressure
Without Pump(s) (psig)
150 150 150 150 150 150 150 150 150
Maximum Fluid Side Pressure
With Pump(s) (psig)
150 150 150 150 150 150 150 150 150
FLUID CONNECTIONS (in.)
Inlet and Outlet, FPT 2 2 2 2 2 2 1 / 2 2 1 / 2 2 1 / 2 2 1 / 2
Drain (NPT) 1 /
2
1 /
2
1 /
2
1 /
2
1 /
2
1 /
2
1 /
2
1 /
2
1 /
2
CONDENSER FANS
Standard Low Noise Type
Fan Speed (Rpm)
Standard/Low Noise
950/475 950/475 950/475 —/700 —/700 —/700 —/700 —/700 —/700
No. Blades...Diameter (in.)
Ckt A/Ckt B
15...30/— 15...30/— 15...30/— 11...30/— 11...30/—
11...30/
11...30
11...30/
11...30
11...30/
11...30
11...30/
11...30
No. Fans...Total kW 1...1.8 1...1.8 1...1.8 2...2.0 2...2.0
2...2.0 (A),
1...1.8 (B)
2...2.0 (A),
1...1.8 (B)
4...4.0 4...4.0
Total Airflow (Cfm) 8,750 8,750 8,750 11,330 11,330 17,500 17,500 22,750 22,750
CONDENSER COILS
Quantity...No. Rows 1...2 1...3 1...3 1...3 1...3 2...3 2...3 2...3 2...3
Total Face Area (sq ft) 23 23 23 32 32 55 55 64 64
HYDRONIC MODULE (Optional)* Pump(s), Strainer W/Blowdown Valve, Expansion Tank, Pressure Gages, Drain and Vent Plugs, Flow Switch, and Balance Valve
Pump Single or Dual, Close-Coupled Centrifugal Pump(s), 2900 Rpm
Expansion Tank Volume (gal) 4.4 10.3
COMPRESSOR 60 Hz 50 Hz
SM110 12.5 10.5
SM115 13.5 11.2
SM125 14.7 12.0
SM160 19.1 15.6
SM185 21.8 18.3