Manuel d'utilisation / d'entretien du produit CVGF du fabricant Trane
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Centrifugal W ater Chillers Model CVGF W ater -Cooled Hermetic Centrifugal Refrigeration Capacities fr om 400 to 1000 T ons (1400 ∼ 3510 kW) 50 and 60 Hz October 2008 CTV -PRC001-E4.
Introducing T rane’ s Model CVGF Centrifugal Water Chiller Introduction The basic gear driven centrifugal water chiller design was introduced in 1976 and has been pr oven in thousands of installations.
Introduction ………………………………………………………………………… 2 Features and Benefi ts …………………………………………………………… 9 Appl.
Standard CVGF Featur es The following features ar e provided as standar d with all T rane Model CVGFchillers: • Hermetic two-stage centrifugal compressor -motor assembly with integral lubrication sy.
Advanced Heat T ransfer Surfaces • Evaporator and condenser tubes use the latest heat transfer surfaces • Less refrigerant needed due to advanced patented evaporator design Compact Size • Design.
T racer AdaptiView TM Control Operator Interface T racer AdaptiView TM contr ol is the unit-mounted operator interface with a touch sensitive 12/1" display . The display pr esents information through an intuitive navigation system. Alternate languages are also available for the contr ol panel display .
7 Features and Benefi ts T racer TU Interface The T racer chiller contr oller adds a level of sophistication better served by a PC application to improve service technician effectiveness and minimize chiller downtime. T racer AdaptiView™ c ontrol is intended to serve only typical daily tasks.
T racer AdaptiView TM Controller T oday's centrifugal chillers offer predictive contr ols that anticipate and compensate for load changes. Other control strategies made possible with the T racer .
• Time of day scheduling: allows the end user to defi ne the occupancy period, i.e. time of the day , holiday periods and exception schedules. • Optimization of the start/stop time of the install.
T wo-Stage Compr essor Widens the Application Range Why Centrifugal Compressors Surge Centrifugal compressors pr oduce their pressur e differential (head) by converting the kinetic energy of the gas leaving the impeller into static pressur e.
Condenser W ater Limitations T emperature T rane centrifugal chillers start and operate over a range of load conditions with controlled water temperatures. Reducing the condenser water temperatur e is an effective method of lowering the chiller power input.
Application Considerations Contact your local T rane Sales Offi ce for information regar ding optimum condenser water temperatures and fl ow rates for a specifi c application. W ater T reatment The use of untreated or impr operly treated water in a chiller may r esult in scaling, erosion, corrosion, algae, or slime.
General Data 13 T able GD-1 – Model CVGF Description Model CVGF Nominal Cooling Capacity NTON 400 500 500 650 800 1000 Heat Exchanger Size Evaporator EVSZ 500 500 700 700 1000 1000 Condenser CDSZ 50.
14 General Data 50 and 60 Hz SI Units and (English Units) High Effi ciency Shells - 0.75 inch (19 mm) Internally Enhanced Cu T ube: Condenser: Nominal Shell 500 500 500 700 700 700 1000 1000 1000 100.
Supply and Motor Lead Wiring and Connections Only copper conductors should be connected to the compressor motor due to the possibility of galvanic corrosion as a r esult of moisture if aluminum conductors ar e used. Copper conductors are recommended for supply leads in the starter panel.
16 Standard Featur es Field Connection The fi eld-connected elements are involved in physically turning the chiller on or off. This involves ensuring that the chiller is not in an emergency or external stop condition, starting the pumps, and verifying that fl ow has been established.
Extended Operation Package Select the extended-operation package for chillers that requir e external, hot water control, and/or base-loading capabilities.
18 Controls Standard Protections Standard Pr otections The chiller controller uses pr oportional-integral-derivative (PID) control for all limits—ther e is no dead band. This removes oscillation above and below setpoints and extends the capabilities of the chiller .
Standard Protections 19 Oil-T emperature Pr otection Low oil temperature when the oil pump and/or compr essor are running may be an indication of refrigerant diluting the oil. If the oil temperatur e is at or below the low oil-temperature setpoint, the compressor is shut down on a latching diagnostic and cannot be started.
20 Controls levels at which this may occur . It is diffi cult to defi ne an exact voltage sag or voltage level at which a particular motor will no longer consume power , but we are able to make some general statements concerning MPL protection: The chiller will remain running under the following conditions: • Line-voltage sag of 1.
Standard Protections Short-Cycling Protection This function mimics heat dissipation from a motor start using two setpoints: Restart Inhibit Free Starts and Restart Inhibit Start-to-Start Timer . This allows the CVGF to inhibit too many starts in a defi ned amount of time while still allowing for fast restarts.
22 Figure PD-1 –Model CVGF Cooling Only With Unit-Mounted Starter Figure PD-2 –Model CVGF Cooling Only Without Unit-Mounted Starter (for Remote-Mounted Starter) CL1 at either end of machine and is requir ed for tube pull clearance. CL2 is always at the opposite end of machine from CL1 and is for water box plus clearance.
Model CVGF Water Connection Pipe Size Shell Size 500 700 1000 W ater Passes Metric Pipe Size (mm) DN Evaporator 2 Pass DN 200 (8”) DN 250 (10”) DN 300 (12”) 3 Pass DN 200 (8”) DN 200 (8”) DN 250 (10”) Condenser Condenser DN 250 (10”) DN 300 (12”) DN 350 (14”) 23 Evaporator Water Box Length — SI (I-P) Length No.
T rane CVGF packaged centrifugal water chillers using HFC-134a refrigerant consist of a hermetic two-stage, gear -drive centrifugal compressor , evaporator , condenser , interstage economizer , unit- mounted micropr ocessor based control panel , and compr essor motor starter .
25 Condenser The condenser is designed, tested and stamped in accordance with the ASME Boiler and Pr essure V essel Code or PED (European Code) for a refrigerant side working pr essure of 15.2 bars (220 psig). It consists of a carbon steel shell with steel tube sheets welded to each end.
Compressor -Motor Starter Unit-mounted starters can either be a star -delta or solid-state in NEMA 1 type enclosure rated up to 952 RLA at 380-480 V olts (star -delta), 900 RLA at 481-600 V olts (star -delta), and 1472 RLA at 380-600 V olts (solid-state).
27 T o Convert From: T o : Multiply By: Length Feet (ft) meters(mm) 0.30481 Inches (In) millimeters (mm) 25.4 Area Square Feet (ft 2 ) square meters (m 2 ) 0.093 Square Inches (In 2 ) square millimeters (mm 2 ) 645.2 V olume Cubic Feet (ft 2 ) Cubic meters (m 3 ) 0.
www .trane.com For more information, contact your local T rane offi ce or e-mail us at comfort@trane.com T rane has a policy of continuous product and data improvement and reserves the right to change design specifi cations without notice.
Un point important après l'achat de l'appareil (ou même avant l'achat) est de lire le manuel d'utilisation. Nous devons le faire pour quelques raisons simples:
Si vous n'avez pas encore acheté Trane CVGF c'est un bon moment pour vous familiariser avec les données de base sur le produit. Consulter d'abord les pages initiales du manuel d'utilisation, que vous trouverez ci-dessus. Vous devriez y trouver les données techniques les plus importants du Trane CVGF - de cette manière, vous pouvez vérifier si l'équipement répond à vos besoins. Explorant les pages suivantes du manuel d'utilisation Trane CVGF, vous apprendrez toutes les caractéristiques du produit et des informations sur son fonctionnement. Les informations sur le Trane CVGF va certainement vous aider à prendre une décision concernant l'achat.
Dans une situation où vous avez déjà le Trane CVGF, mais vous avez pas encore lu le manuel d'utilisation, vous devez le faire pour les raisons décrites ci-dessus,. Vous saurez alors si vous avez correctement utilisé les fonctions disponibles, et si vous avez commis des erreurs qui peuvent réduire la durée de vie du Trane CVGF.
Cependant, l'un des rôles les plus importants pour l'utilisateur joués par les manuels d'utilisateur est d'aider à résoudre les problèmes concernant le Trane CVGF. Presque toujours, vous y trouverez Troubleshooting, soit les pannes et les défaillances les plus fréquentes de l'apparei Trane CVGF ainsi que les instructions sur la façon de les résoudre. Même si vous ne parvenez pas à résoudre le problème, le manuel d‘utilisation va vous montrer le chemin d'une nouvelle procédure – le contact avec le centre de service à la clientèle ou le service le plus proche.
