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Trane CG-PRC007-EN - page 1
Air -Cooled Liquid Chillers 1 0 to 60 T ons CG-PRC007 -EN Apr il 20 04 ...
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Trane CG-PRC007-EN - page 2
© 20 03 American Standard Inc. All rights reserved CG-PRC007 -EN Intr oduction Air -Cooled Liquid Chillers 1 0, 15 T ons 20–60 T ons Design and manufacturing excellence makes T rane a leader in the air -cooled c hiller marketplace. For over 40 years, T rane has been using the best engineering available in development, manufacturing, and marketin ...
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Trane CG-PRC007-EN - page 3
3 Contents CG-PRC001 -EN Intr oduction F eatur es and Benefits Application Consider ations Selection Pr ocedur e Model Number Description Gener al Data P erfor mance Data P erformance Adjustment F actor s Contr ols Electr ic P ow er Dimension and W eights Mec hanical Specifications 2 4 9 14 15 16 21 17 30 37 39 48 ...
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Trane CG-PRC007-EN - page 4
CG-PRC007 -EN 4 F eatures and Benef its Installation Small siz e, complete factory wiring, easy lif ting provisions, factory installed options and star t-up control provide fast, easy installation. A complete factory run test is performed on eac h unit, eliminating potential star t-up problems. Int egrated Comf ort Syst ems All T rane c hillers are ...
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Trane CG-PRC007-EN - page 5
5 CG-PRC007 -EN F eatures and Benef its The 1 0 and 1 5-ton air -cooled Cold Generator ™ c hillers, with T rane direct drive hermetic scroll compressor s, has outstanding standard features and additional benefits that make selection, installation, and servicing easy . Flexibility Footpr int Central to the design of any project is the operating en ...
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Trane CG-PRC007-EN - page 6
CG-PRC007 -EN 6 F eatures and Benef its (20–60 T on) Other Standard F eatur es • T rane 3-D Scroll compressors • Advanced motor protection • 30 0 psi w ater side evaporator • Evaporator insulation (¾-inc h Armaflex II or equivalent) • Evaporator heat tape (thermostat controlled) • Condenser coil guards • Operation down to 30°F wit ...
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Trane CG-PRC007-EN - page 7
7 CG-PRC007 -EN F eatures and Benef its Enhanced Contr ols Int elliPak Chiller Unit Contr ol Module (UCM) Micr oprocessor Contr ol The brain of the 20 to 60 ton air -cooled c hiller is its Unit Control Module (UCM). The UCM is an inno vati ve, modular microprocessor control design, whic h coordinates the actions of the c hiller in an ef ficient man ...
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Trane CG-PRC007-EN - page 8
CG-PRC007 -EN 8 F eatures and Benef its T r ane 3-D Scroll Compr essor Simple Design with 70% Few er Par ts Fewer par ts than an equal capacity reciprocating compressor means significant reliability and ef ficiency benefits. The single orbiting scroll eliminates the need for pistons, connecting rods, wrist pins and valves. Fewer par ts lead to incr ...
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Trane CG-PRC007-EN - page 9
9 CG-PRC007 -EN Application Considerations Cer tain application constraints should be considered when sizing, selecting and installing T rane air -cooled c hillers. Unit and system reliability is of ten dependent upon proper and complete compliance with these considerations. Where the application varies from the guidelines presented, it should be r ...
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Trane CG-PRC007-EN - page 10
CG-PRC007 -EN 10 Application Considerations c Pr ovide Later al Clearance The condenser coil inlet must not be obstructed. A unit installed closer than the minimum recommended distance to a wall or other ver tical riser may experience a combination of coil starvation and warm air recirculation, resulting in unit capacity and efficiency reductions a ...
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Trane CG-PRC007-EN - page 11
11 CG-PRC007 -EN CONTROLS 1 T emperat ure Controller In order to provide stable system operation and to prevent excessive compressor cycling, the temperature control sensor in all 20-60 ton c hillers is located in the supply (outlet) solution. The temperature sensor in all 1 0 and 1 5 ton c hillers is located in the return (inlet) solution. This se ...
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Trane CG-PRC007-EN - page 12
CG-PRC007 -EN 12 point and adequate ethylene glycol concentration for safe operation. The maximum catalog leaving solution temperature from the evaporator is 65°F for outdoor ambients up to 1 15°F . High leaving water temperatures exceeding this may result in excessive suction temperatures and, therefore, inadequate motor cooling. For application ...
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Trane CG-PRC007-EN - page 13
13 CG-PRC007 -EN Application Considerations Figur e AC-1 — Recommended Piping Components F or T ypical Evaporat or Installation 20–60 T on 1 0, 15 T on Note: Provide shutoff valves in the evaporator inlet and outlet to facilitate water temperature sensor removal. See unit dimensional drawings for inlet and outlet locations. ...
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Trane CG-PRC007-EN - page 14
CG-PRC007 -EN 14 S election P rocedure The c hiller capacity tables presented in the “P erformance Data” section cover the most frequently encountered leaving water temperatures. The tables reflect a 1 0°F temperature drop through the evaporator . For temperature drops other than 1 0°F , fouling factor s other than 0.0 0 0 1 (in accordance wi ...
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Trane CG-PRC007-EN - page 15
15 CG-PRC007 -EN Model Number Description CGA 120 B 3 00 B A 123 456 7 8 9,10 11 12 DIGIT 1 0 — Leaving Solution Set point 0 = Standard Expansion V alve 40-60°F Leaving W ater (CGA100 & CGA120 models) 20-60°F Leaving Solution (CGA150 & CGA180 Models) V = Nonstandard Expansion V alve 20-39°F Leaving Solution (CGA100 & CGA120 models) ...
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Trane CG-PRC007-EN - page 16
CG-PRC007 -EN 16 General Data T able GD-1 — General Data — 1 0–60 T on Units 1 0 T on 15 T o n 20 T on 25 T o n 30 T o n 40 T on 50 T o n 60 T on Model Number CGA120 CGA180 CGAF-C20 CGAF-C25 CGAF-C30 CGAF-C40 CGAF-C50 CGAF-C60 Compressor Data Model Scroll Scroll Scroll Scroll Scroll Scroll Scroll Scroll Quantity 2 2 2 1/ 1 2 4 2/ 2 4 Nominal ...
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Trane CG-PRC007-EN - page 17
17 CG-PRC007 -EN Chilled Altitude Fouling Water Sea Level 2,0 00 Feet 4,0 00 Feet 6,0 00 Feet Factor ∆ T CAP GPM KW CAP GPM KW CAP GPM KW CAP GPM KW 6 1 .0 0 1 .66 1 .0 0 0.98 1 .63 1 .0 1 0.95 1 .59 1 .02 0.93 1 .54 1 .05 8 1 .0 0 1 .25 1 .0 0 0.98 1 .22 1 .0 1 0.96 1 .1 9 1 .02 0.93 1 .16 1 .05 0.00 025 1 0 1 .0 0 1 .0 0 1 .0 0 0.98 0.98 1 .01 ...
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Trane CG-PRC007-EN - page 18
CG-PRC007 -EN 18 Chart P AF-1 — Ev aporator Wat er Pressur e Drop 1 0 to 60 T on Air -Cooled Chillers P erf ormance A djustment F actor s 1 . 5 2 2 . 5 3 3 . 5 4 4 . 5 5 5 . 5 6 6 . 5 7 7 . 5 8 8 . 5 9 9 . 5 1 0 1 0 1 0 1 5 1 0 T o n 1 5 T o n 6 0 T o n 5 0 T o n 4 0 T o n 3 0 T o n 2 0 & 2 5 T o n Pres sure Drop ( Ft of W ater) Flo w (GP M) ...
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Trane CG-PRC007-EN - page 19
19 CG-PRC007 -EN Chart P AF-2— Eth ylene Glycol P erformance F act ors Chart P AF-3— Pr opylene Glycol Perf o r mance F actors P erf ormance A djustment F actor s ...
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Trane CG-PRC007-EN - page 20
CG-PRC007 -EN 20 Chart P AF-4— Eth ylene Glycol and Prop ylene Glycol Perf ormance F actors P erf ormance A djustment F actor s ...
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Trane CG-PRC007-EN - page 21
21 CG-PRC007 -EN P erf ormance Data — 60 HZ (1 0–1 5 T on) F ull Load Entering Condenser Air T emperature (Deg ree F) 75.0 85.0 95.0 105.0 115.0 L WT P ercent Capacity System Capacity System Capacity System Capacity System Capacity System (Deg F) Glycol (T ons) KW EER (T ons) KW EER (T ons) KW EER (T ons) KW EER (T ons) KW EER 20 28 6.0 7.6 9.4 ...
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Trane CG-PRC007-EN - page 22
CG-PRC007 -EN 22 P erf ormance Data — 60 HZ T able PD-3 — 20 T on — CGAF-C20 Entering Condenser Air T emperature (Deg ree F) 75.0 85.0 95.0 105.0 115.0 L WT P ercent Capacity System Capacity System Capacity System Capacity System Capacity System (Deg F) Glycol (T ons) KW EER ( T ons) KW EER (T ons) KW EER (T ons) KW EER (T ons) KW EER 20 28 1 ...
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Trane CG-PRC007-EN - page 23
23 CG-PRC007 -EN P erf ormance Data — 60 HZ (30–40 T on) F ull Load Entering Condenser Air T emperature (Degree F) 75.0 85.0 95.0 105.0 115.0 L WT P ercent Capacity System Capacity System Capacity System Capacity System Capacity System (Deg F) Glycol (T ons) KW EER (T ons) KW EER (T ons) KW EER ( T ons) KW EER ( T ons) KW EER 20 28 18.8 25.7 8. ...
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Trane CG-PRC007-EN - page 24
CG-PRC007 -EN 24 P erf ormance Data — 60 HZ Entering Condenser Air T emperature (Deg ree F) 75.0 85.0 95.0 105.0 115.0 L WT P ercent Capacity System Capacity System Capacity System Capacity System Capacity System (Deg F) Glycol (T ons) KW EER (T ons) KW EER (T ons) KW EER (T ons) KW EER (T ons) KW EER 20 28 37.2 50.1 8.9 35.3 55.0 7.7 33.4 60.7 6 ...
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Trane CG-PRC007-EN - page 25
25 CG-PRC007 -EN P erf ormance Data — 50 HZ (1 0–30 T on) F ull Load Entering Condenser Air T emperature (Degree F) 85.0 95.0 105.0 115.0 120.0 L WT P ercent Capacity System Capacity System Capacity System Capacity System Capacity System (Deg F) Glycol (T ons) KW EER ( T ons) KW EER (T ons) KW EER ( T ons) KW EER (T ons) KW EER 40 0 7.2 7.6 11. ...
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Trane CG-PRC007-EN - page 26
CG-PRC007 -EN 26 Entering Condenser Air T emperature (Deg ree F) 85.0 95.0 105.0 115.0 120.0 L WT Percent Capacity System Capacity System Capacity System Capacity System Capacity System (Deg F) Glycol (T ons) KW EER (T ons) KW EER (T ons) KW EER (T ons) K W EER ( T ons) KW EER 40 0 28.8 30.0 11.5 27.3 33.5 9.8 25.7 37.6 8.2 24.0 42.2 6.8 23.1 44.6 ...
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Trane CG-PRC007-EN - page 27
27 CG-PRC007 -EN P erf ormance Data — 60 HZ T able PD-18— P art Load Data, ARI Points (1 0-60 T ons) Entering Condenser Air T emperature (Degrees F) Model 95 86.9 84.5 77 .7 77 .3 72.5 72.3 71 .5 T ons Number 100% Load 86% Load 82% Load 71% Load 70% Load 62% Load 62% Load 61% Load EER 1 0.0 — — — — — — — 1 0 CGA 120 2 Capacity (T ...
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Trane CG-PRC007-EN - page 28
CG-PRC007 -EN 28 P erf ormance Data — 50 HZ (1 0–30 T on) P ar t Load P ercent Entering Condenser Air T emperature (Deg rees F) Load 75 85 95 105 115 120 EER 14.2 12.3 10.6 9.0 7.6 7.0 100 Capacity 21.7 20.7 19.7 18.6 17.4 16.8 System KW 18.3 20.1 22.3 24.8 27.5 29.0 EER 15.7 13.7 11.9 10.2 8.7 7.9 60 Capacity 13.8 13.2 12.6 11.9 11.2 10.8 Syst ...
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Trane CG-PRC007-EN - page 29
29 CG-PRC007 -EN P ercent Entering Condenser Air T emperature (Deg rees F) Load 75 85 95 105 1 15 120 Percent Entering Condenser Air T emperature (Deg rees F) Load 75 85 95 105 1 15 120 EER 14.1 12.2 10.4 8.8 7.4 6.7 100 Capacity 52.2 49.8 47.3 44.5 41.6 40.1 System KW 44.4 49.2 54.6 60.8 67.7 71.4 EER 14.9 12.9 11.0 9.4 7.9 7.2 75 Capacity 40.5 38 ...
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Trane CG-PRC007-EN - page 30
CG-PRC007 -EN 30 Contr ols (Interface with Other Contr ol S ystems) Stand-Alone Unit Interface to stand-alone units is very simple; only a remote auto-stop or c hilled water flow interloc k signal for sc heduling is required for unit operation. Signals from the c hilled water pump contactor auxiliary or a flow switc h are wired to the c hilled wate ...
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Trane CG-PRC007-EN - page 31
31 CG-PRC007 -EN ELECTRICAL CONTROL S Y STEM The controls used on CGA 1 0 and 15-ton units are classified either as “safety” controls or “ operational” controls. Brief descriptions of the specific safety and operating controls used in the CGA control sc heme are provided in the following paragraphs. R efer to the following control descripti ...
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Trane CG-PRC007-EN - page 32
CG-PRC007 -EN 32 If compressor number one can’t satisfy the cooling demand, WTT’ s second stage switc h closes, allowing power to pass through the CWFIR contacts, the DBC, the ASCT2, the RR2 contacts, the LPC02, and the HPC02 to energize the CC2 coil. This star ts compressor number two and outdoor fan number two. L OW AMBIENT OPERA TION Field I ...
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Trane CG-PRC007-EN - page 33
33 CG-PRC007 -EN Simple Int erface with All Control Syst ems The IntelliP ak controls afford simple interface with T rane T racer ™ systems, pro viding broad control capabilities for Building Automation systems. For control systems other than T rane, two generic building automation system interfaces are available and of fer simplicity and flexibi ...
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Trane CG-PRC007-EN - page 34
CG-PRC007 -EN 34 Standard Contr ol F eatur es Human Interf ace (HI) Panel The Human Interface (HI) P anel provides a 2 line X 40 c haracter clear English language liquid crystal display and a 16 but ton k eypad for monitoring, set ting, editing and controlling. The Human Interface P anel is mounted in the unit’ s main control panel and is accessi ...
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Trane CG-PRC007-EN - page 35
35 CG-PRC007 -EN Head Pr essure Control — Condenser head pressure control is pro vided in the UCM by staging condenser fans on or of f to maintain the saturated condensing temperature. This function will allow cooling operation down to 30°F as standard. Minimum on and of f timing is built into the algorithm to prevent rapid cycling. Pump down ? ...
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Trane CG-PRC007-EN - page 36
CG-PRC007 -EN 36 Gener ic Building A utomation S ystem Module (GBAS) — T wo Generic Building Automation System Modules (GBAS) are available as an option to provide broad control capabilities for building automation systems, other than the T rane ’ s T racer system. The 0-5 vdc input GBAS Module contains 4 analog inputs, one binary input for dem ...
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Trane CG-PRC007-EN - page 37
37 CG-PRC007 -EN T able ED-1 — Electrical Data Unit Wiring Motor Data Model Nameplate V oltage Max Fuse Rec. Dual Compressor (Ea) Fans (Ea) T on s Number V oltage Range M CA Size Element Qty . R LA LR A Qty K W F L A CGA120B1 208-230/60/1 187 -254 7 4 1 0 0 — 2 30 169 1 0.95 6 CGA120B3 208-230/60/3 187 -254 38.4 50 — 2 14.4 128 1 0.95 6 1 0 C ...
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Trane CG-PRC007-EN - page 38
CG-PRC007 -EN 38 T able ED-2 — Electrical D ata Unit Wiring Motor Data Model Nameplate V oltage Max Fuse Rec. Dual Compressor (Ea) Fans (Ea) T ons Number V oltage Range MCA Size Element Qty . RL A L RA Qty K W F L A 1 0 CGA1 0 0BD 380-415/50/3 342-456 24.1 30 — 2 9.5 63 1 0.57 2.7 1 5 CGA150BD 380-415/50/3 342-456 32.7 4 5 — 2 13.1 99.5 2 0.3 ...
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Trane CG-PRC007-EN - page 39
39 CG-PRC007 -EN Dimensional Data Figur e DD-1 — CGA -120B Unit Dimensions (1 0 T on) Notes: 1. Minimum clearance around the perimeter of the unit is 3 feet. Minimum clearance between adjacent units is 6 feet. 2. When installing water pipes, be certain to route them away from the compressor access panels to allow for compressor servicing or repla ...
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Trane CG-PRC007-EN - page 40
CG-PRC007 -EN 40 Dimensional Data Figur e DD-2 — CGA-1 80B Unit Dimensions (1 5 T on) Notes: 1. Minimum clearance around the perimeter of the unit is 3 feet. Minimum clearance between adjacent units is 6 feet. 2. When installing water pipes, be certain to route them away from the compressor access panels to allow for compressor servicing or repla ...
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Trane CG-PRC007-EN - page 41
41 CG-PRC007 -EN Dimensional Data Figur e DD-3 — CGAF-C20 Unit Dimensions (20 T on) ...
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Trane CG-PRC007-EN - page 42
CG-PRC007 -EN 42 Dimensional Data Figur e DD-4 — CGAF-C25 Unit Dimensions (25 T on) ...
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Trane CG-PRC007-EN - page 43
43 CG-PRC007 -EN Dimensional (30 T on) Data Figur e DD-5 — CGAF-C30 Unit Dimensions ...
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Trane CG-PRC007-EN - page 44
CG-PRC007 -EN 44 Dimensional (40 T on) Data Figur e DD-6 — CGAF-C40 Unit Dimensions ...
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Trane CG-PRC007-EN - page 45
45 CG-PRC007 -EN Dimensional (50 T on) Data Figur e DD-7 — CGAF-C50 Unit Dimensions ...
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Trane CG-PRC007-EN - page 46
CG-PRC007 -EN 46 Dimensional (60 T on) Data Figur e DD-8— CGAF-C60 Unit Dimensions ...
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Trane CG-PRC007-EN - page 47
47 CG-PRC007 -EN W eights T able W -1 — Appro ximate Cor ner Weights (lbs) 1 0-T on Unit Isolator Loading T on s Model Number 1 2 3 4 Operating Wt. Shipping Wt. 10 CGA 120B 161 164 1 03 101 529 576 T able W -2 — Appro ximate Cor ner Weights (lbs) 15-T on Unit Isolator Loading T ons Model Number 1 2 3 4 Operating Wt. Shipping Wt. 15 CGA 180B 186 ...
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Trane CG-PRC007-EN - page 48
CG-PRC007 -EN 48 Mec hanical Specif ications (1 0–1 5 T on) General Units shall be assembled on heavy gauge steel mounting/lif ting rails and shall be weatherproofed. Units shall include hermetic scroll compressors, plate fin condenser coil, fan(s) and motor(s), controls and complete factory installed operating c harge of oil and R-22 refrigerant ...
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Trane CG-PRC007-EN - page 49
49 CG-PRC007 -EN Mec hanical Specif ications (20–60 T on) GENERAL All c hillers are factory run-tested to confirm proper operation. Units are c hec k ed on a computer -based test stand at typical ambient and water conditions and control operation is monitored. Units ship with a full operating c harge of refrigerant and oil. Units are constructed ...
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Trane CG-PRC007-EN - page 50
CG-PRC007 -EN 50 hardw are, software and interconnecting wiring are in proper operating condition. The modules (boards) shall be protected to prevent RFI and voltage transients from affecting the board’ s circuits. All field wiring shall be terminated at separate, clearly marked terminal strip. Direct field wiring to the I/O boards is not accepta ...
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Trane CG-PRC007-EN - page 51
51 CG-PRC007 -EN ...
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Trane CG-PRC007-EN - page 52
T rane has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice. Literature Order Number CG-PRC0 07 -EN File Number PL - RF -CG-PRC0 07 -EN-0404 Supersedes CG-PRC0 07 -EN-0503 Stoc king Location W ebbMason T rane A business of American Standard Companies www.trane.com ...
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