Manuale d’uso / di manutenzione del prodotto SCXG-SVX01B-EN del fabbricante Trane
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SCXG-S VX0 1B-EN Installation, Operation, & Maintenance Int elliP ak Commercial Self-Contained Modular Series, 20-35 tons “JO” and later design sequence Models: SCWG -020, -025, -030, -032, -0.
© 20 08 T rane All rights reserved SCXG-SVX0 1B-EN About This Manual Liter atur e Chang e Hist ory Use this manual for commercial self- contained models SCWG, SIWG, SCRG, and SIRG.
SCXG-S VX0 1B-EN 3 Cross reference to related publications/information: • Product Catalog, PKG-PRC003-EN, Modular Series Commercial Self-Contained • IntelliPak • Self-Contained Programming Guide.
4 SCXG-S VX0 1B-EN F eatures and Benef its Refr ig erant Handling Procedures Environmental Accountability Policy T rane urges that all HV AC servicers to make every effort to eliminate, if possible, or vigorously reduce the emission of CFC, HCFC, and HFC refrigerants to the atmosphere.
SCXG-SVX0 1B-EN 5 Figure I-GI-1. IntelliPak ® commercial self-contained Modular Series unit. Modular Ser ies Self-Contained Unit Components Commercial self contained units are complete HV AC systems used in floor -by- floor applications.
6 SCXG-S VX0 1B-EN Installation Control Options Units may be ordered with either conventional thermostat interface or IntelliPak TM Direct Digital Control (DDC). IntelliPak TM controls include a Human Interface (HI) panel with two line by forty (40) c haracter clear English display for easy operator interface to unit setup and control parameter s.
SCXG-SVX0 1B-EN 7 Model Number Description Model Number Description Eac h IntelliP ak self-contained unit has a multiple c haracter model number unique to that unit. T o determine a unit’ s specific o ptions, reference the model number on the unit nameplate using the model number explanation below.
8 SCXG-S VX0 1B-EN Model Number Description SCWG Digit 22 - Unit Finish 1 = Paint - Executive Beige 2 = Protective Coating 3 = Protective Coating w/ Finish Coat Digit 23 0 = None Digit 24 - Unit Conne.
SCXG-SVX0 1B-EN 9 P S W G S A 1 1 0 JO 1 2 3 4 5 6 7 8 9 1 0 1 1 Self-Contained Ship-With Accessory Model Number Descr iption Digit 1 - Parts/Accessories P = Parts/Accessories Digit 2 - Unit Model S= .
10 SCXG-S VX0 1B-EN Model Number Description PSWG “ Aft er -Shipment” Accessory Model Number P S A G W N 20 4 * * 1 1 0 0 0 0 1 0 1 0 1 0 1 0 0 1 1 0 0 0 0 0 L 1 0 0 7 0 0 1 2 3 4 5 6 7 8 9 1 0 1 .
SCXG-SVX0 1B-EN 11 Installation Receiving and Handling Shipping Package Commercial self-contained units ship assembled with protective coverings over the coil and discharge openings. Figure I-PC-1 illustrates a typical shipping package. Ship-Separate Accessories Field-installed sensors ship separately inside the unit’ s main control panel.
12 SCXG-S VX0 1B-EN pre-installation considerations Installation Installation Pr eparation Before installing the unit, perform the following procedures to ensure proper unit operation. 1 . V erify the floor or foundation is level. Shim or repair as necessary .
SCXG-SVX0 1B-EN 13 Service Access W ARNING Hazardous V oltage w/Capacitors! Disconnect all electric po wer , including remote disconnects before servicing. Follo w proper loc k out/tagout pr oce- dures to ensure the power cannot be inadver tently ener gized.
14 SCXG-S VX0 1B-EN pre-installation considerations Installation Rigging and Unit Handling W ARNING Improper Unit Lift! T est lift unit appr oximat ely 24 inches to verify proper center of gravity lift point. T o av oid dr opping of unit, r eposition lifting point if unit is not level.
SCXG-SVX0 1B-EN 15 pre-installation considerations Installation Figure I-PC-8. Split-apart modular unit pr oper r igging. Figure I-PC-7 . Assembled modular unit pr oper rigging. Unit Handling Pr ocedur e NO TICE Do not use hooks to lift unit or hook into open channels to lif t unit.
16 SCXG-S VX0 1B-EN Installation pre-installation considerations Split-Apar t Unit Assembly 1. Ensure the tagging information on the fan section nameplate matches that on the compressor nameplate. 2. Remove the connector brackets holding the the sheet metal shipping cover on compressor section.
SCXG-SVX0 1B-EN 17 Installation pre-installation considerations Figure I-PC-9 How to assemble the split apart modular unit Figure I-PC-1 0 Modular unit panel descr iption and inter nal connections.
18 SCXG-S VX0 1B-EN pre-installation considerations Installation Skid Remo v al The unit ships on skids to provide forklift locations from the front or rear . The skid allows easy maneuverability of the unit during storage and transportation. Remove the skids before placing the unit in its permanent location.
SCXG-SVX0 1B-EN 19 SCWG SIRG Dimensions & W eights SCWG/SIWG Dimensions, in. l eft-side view f actory-piped units front view left-side view direct condenser connections top view back view r ight-side view f actory-piped units r ight-side view direct-condenser connections SCWG/SIWG weight, lbs.
20 SCXG-S VX0 1B-EN SCRG / SIRG Dimensions & W eights SCRG/SIRG Dimensions, in. SCRG/SIRG W eight, lbs. unit tons base weight 2 0 2344 2 5 2479 3 2 2614 Notes: 1 . All unit weights include refrigerant, water , inlet guide vanes and controllers, electric heat and valves.
SCXG-SVX0 1B-EN 21 Dimensions & W eights Detail Dimensions, in. model A B C D E F SCWG/SCRG 20 2 0 1 0 3 / 4 58 1 / 2 5 1 / 8 13 1 / 4 11 1 / 2 SCWG/SCRG 25 1 9 1 / 4 12 1 / 4 57 5 / 8 5 1 / 8 13 .
22 SCXG-S VX0 1B-EN CCRC / CIRC Dimensions & W eights B C (LIQUID LINE CONNECTION REFRIG. CIRCUIT 1) (HOT GAS CONNECTION REFRIG. CIRCUIT 1) (LIQUID LINE CONNECTION REFRIG. CIRCUIT 2) (HOT GAS CONNECTION REFRIG. CIRCUIT 2) REFRIGERANT CIRCUIT 2 REFRIGERANT CIRCUIT 1 CCRC/CIRC Air -cooled condenser dimensions & weight, in-lbs.
SCXG-SVX0 1B-EN 23 Hot water coil dimensions & weight, in-lbs. unit size A B C D E F G H J weight 20 - 35 tons 37 1 / 4 53 3 / 4 16 5 / 8 73 1 / 2 14 7 / 8 16 1 / 4 43 1 / 4 5 5 / 8 7 3 / 4 460 Di.
24 SCXG-S VX0 1B-EN Steam Coil Dimensions & W eights Steam coil dimensions, in-lbs. unit size A B C D E K L M N P Q R weight 20 - 35 tons 37 1 / 4 53 3 / 4 16 5 / 8 73 1 / 2 10 7 / 8 22 1 / 2 3 3 .
SCXG-SVX0 1B-EN 25 Electr ic Heat Coil Electr ic heat coil dimensions & weight, in-lbs. unit size A B C D weight 20 tons 70 1 / 4 4 7 / 8 11 1 / 2 1 9 460 25 tons 70 1 / 4 4 1 / 8 11 1 / 2 1 9 460 30 - 35 tons 70 1 / 4 2 7 / 8 11 1 / 2 19 460 Note: Coil box height is 8 in.
26 SCXG-S VX0 1B-EN W at erside Economizer W aterside economiz er weight, in-lbs. weight unit size 2-row 4-row 20 - 35 tons 4 8 8 5 8 4 Dimensions & W eights.
SCXG-SVX0 1B-EN 27 Air side Economiz er Dimensions & W eights Airside economizer dimensions & weight, in-lbs. unit size A B C D E F (1) F (2) G (1) G (2) H (1) H (2) J K L M weight SCWG/SIWG 2.
28 SCXG-S VX0 1B-EN VFD A B C D E F G VFD dimensions, in. voltage hp A B C D E F G 46 0 7 .5 15.55 15.12 7 .8 7 8.66 0.39 0.24 7 . 87 10 20 8 7 . 5 22.05 21 .26 7 . 87 9.53 0.83 0.30 1 0.24 10 460 1 5 20 25 20 8 1 5 27 .56 26.77 1 0.63 12.13 0.83 0.30 1 1 .
SCXG-SVX0 1B-EN 29 VFD Dimensions & W eights V ar iable F r equency Dr ive with Bypass VFD with bypass dimensions, in. voltage hp A B C D E F G H 4 6 0 7.5 30.40 28.03 16.14 23.35 24.85 0.75 8.59 10.63 10 2 0 8 7.5 41.28 38.89 16.14 24.00 25.5 0.75 10.
30 SCXG-S VX0 1B-EN W at er Piping W ARNING High Pr essur e W ater! Pr ovide r elief v alv es on system w ater piping to prevent instantaneous release of high pressur e wate r . F ailure t o pr ovide relief v alves could r esult in death or ser ious injury or water pump damag e or unit f ailur e.
SCXG-SVX0 1B-EN 31 Mec hanical Specif ications Condensate Drain Connections The condensate drain is internally trapped. Condensate drain connections are on the unit’ s left side. Connect condensate drain piping to the 1 1 / 4 “ NPT female fitting, using at least 7 / 8 ” OD copper or 3 / 4 “ OD iron pipe.
32 SCXG-S VX0 1B-EN Refr iger ant Piping (Air -Cooled Units Only) See the “Startup” section of this manual for instructions on refrigerant evacuation, charging, and superheat measurement. Leak-test the entire refrigeration system after all piping is complete.
SCXG-SVX0 1B-EN 33 Specific unit wiring diagrams are provided on the inside of the control panel door . Use these diagrams for connections or trouble analysis. Supply P ow er Wir ing W ARNING Hazardous V oltage w/Capacitors! Disconnect all electric po wer , including remote disconnects before servicing.
34 SCXG-S VX0 1B-EN Selection Pr ocedur es RLA = rated load amps Compressor LRA = locked rotor amps Fan motor LRA = locked rotor amps, N.E.C. table 430 - 150 FLA = full load amps, N.E.C. T able 430 - 150 V oltage utilization range is ±1 0% Determination of minimum circuit ampacity (MCA).
SCXG-SVX0 1B-EN 35 pre-star tup requirements Installation Pr e-Start up Procedur es W ARNING Hazardous V oltage w/Capacitors! Disconnect all electric po wer , including remote disconnects before servicing. Follo w proper loc k out/tagout pr oce- dures to ensure the power cannot be inadver tently ener gized.
36 SCXG-S VX0 1B-EN pre-star tup requirements Plenum Before installing the plenum attach the insulation strip that ships with the plenum. See Figure I-PR-3 for proper insulation location. Align the plenum front with the control panel side of the unit.
SCXG-SVX0 1B-EN 37 pre-star tup requirements Airside Economizer Installation Note: Airside economizer option available on 20-80 tons only . Unit Handling 1. Hoist the damper cabinet to the installation location with straps positioned under the skid as shown in Figure I-PR-4.
38 SCXG-S VX0 1B-EN pre-star tup requirements Static Pr essur e T ransducer Installation (V A V units only) Supply air static pressure controls the inlet guide vane and inverter options. A static pressure head assembly ships separate in the control panel for field installation in the supply air duct work.
SCXG-SVX0 1B-EN 39 pre-star tup requirements Installation Figur e I-PR-7 . Installing the w aterside economizer . W aterside Economiz er Installation Procedure 1. Loosen and pull all end devices that go throught the bushing on the filter rack (upper right corner of rack).
40 SCXG-S VX0 1B-EN pre-star tup requirements Installation Figure I-PR-9. W aterside economiz er with left-hand f actory piping tubing assembly Ite m Part Description A Assembly #1 B Assembly #2 C Assembly #3 D Assembly #4 E T ube; 2 5 / 8 ” x 16 7 / 8 ” F T ube; 2 5 / 8 ” x 22 5 / 8 Figure I-PR-8.
SCXG-SVX0 1B-EN 41 pre-star tup requirements Installation Figure I-PR-1 0. W aterside economizer with r ight-hand factory piping tubing assembly . Ite m Part Description A Assembly #1 B Assembly #2 C Assembly #3 D Assembly #4 E T ube; 2 5 / 8 ” x 1 1 3 / 4 ” F T ube; 2 5 / 8 ” x 20 1 / 4 ” G Actuator Assembly Figure I-PR-1 1.
42 SCXG-S VX0 1B-EN pre-star tup requirements Installation Hydronic Coil Installation These instructions are for steam and hot water coil installation. The hydronic coil assembly has a full coil, piping, a modu- lating temperature control valve, and a disc temperature limit device located in the unit near the fan on the motor frame.
SCXG-SVX0 1B-EN 43 pre-star tup requirements Installation Electr ic Heat Installation The electric heat option consists of a single stage heater and is used in IntelliPak units or units with a field- installed thermostat. The electric heater ships separate for field installation and wiring.
44 SCXG-S VX0 1B-EN Figur e I-PR-1 0. BA Y SENS1 1 0 Dual setpoint, manual/automatic changeover sensor with system function lights, acces- sory model number digit 6 = F pre-star tup requirements Figur e I-PR-7 .
SCXG-SVX0 1B-EN 45 pre-star tup requirements Figur e I-PR-12. BA Y SENS073 Zone temperature sensor w/timed override , accessory model number digit 6 = B Figure I-PR-1 1 .
46 SCXG-S VX0 1B-EN lite rat ure f or allowable waiting per iods f or dischar ge of capacit ors. V er ify with an appropr iate v oltmeter that all capacit ors hav e disc harg ed. F ailure t o disconnect power and discharge capacitors before servicing could result in death or serious injury .
SCXG-SVX0 1B-EN 47 RIGHT BACK 1-3/32 [27,43 m m] 3/32 [2,00 m m] 1-3/8 [35,00 m m] 19/32 [15,00 m m] 15/64 [6,00 mm ] 3-5/32 [80,00 m m] 1-1/32 [26,16 m m] 5/32 [3,81 m m] 4X Figure I-PR-22. Zone sensor mounting hole locations f or: BA Y SENS077 , BA Y SENS073, BA YSENS07 4, BA YSENS1 08, and BA Y SENS1 1 0.
48 SCXG-S VX0 1B-EN Junc Mounting to Junction Box Mounting Directly to the Wall Figur e I-PR-23. T ypical zone sensor installation for v ertically -or iented sensors Installation pre-star tup requirem.
SCXG-SVX0 1B-EN 49 pre-star tup requirements Constant V olume Zone Sensor BA Y SENS0 19 Descr iption This seven day programmable sensor with night setback has four periods for occupiedunoccupied programming per day . If power is interrupted, the program retains in permanent memory .
50 SCXG-S VX0 1B-EN pre-star tup requirements Programmable Zone Sensor Installation Mounting Location Mount the sensor on the wall in an area with good air circulation at an average temperature. Choose a location that is easily accessible, and on a wall where the subbase can be mounted about 5 feet (1 .
SCXG-SVX0 1B-EN 51 pre-star tup requirements Time Clock Option The time clock option has a programmable timer that is factory wired to the unoccupied input to provide on/off control.
52 SCXG-S VX0 1B-EN pre-star tup requirements Figure I-PR-23. Human interf ace (HI) panel k eypad Remot e Human Interf ace P anel Installation Human Interface (HI) Panel The HI enables the user to communicate necessary unit operating parameters and receive operating status information from within the occupied space.
SCXG-SVX0 1B-EN 53 pre-star tup requirements Mounting the Remote Human Interface (RHI) Panel The installer must provide all mounting hardware such as; hand tools, electrical boxes, conduit, screws, etc. Refer to Figure I-PR-24 for the mounting hole and knockout locations.
54 SCXG-S VX0 1B-EN pre-star tup requirements Figure I-PR-24. Remote HI mounting holes and knockout locations Installation.
SCXG-SVX0 1B-EN 55 Wir ing the Remot e Human Interface The remote human interface requires 24 VA C + 4 volts power source and a shielded twisted pair communication link between the remote panel and the interprocessor communication bridge (ICPB) module at the self-contained unit.
56 SCXG-S VX0 1B-EN pre-star tup requirements Installation Connecting to T racer Summit W ARNING Hazardous V oltag e w/Capaci- tors! Disconnect all electr ic power , including remote disconnects before servicing. Follow proper lockout/tagout proce- dures to ensure the power cannot be inadvertently energized.
SCXG-SVX0 1B-EN 57 pr ogramming Installation Figure I-P -1 . BA YSENS0 19 k eypad and display configur ation BA Y SENS0 19 Ke ypad and Display Explanation 1. Up and Down Buttons • Increases or decreased programmed temperature settings in program menu.
58 SCXG-S VX0 1B-EN pr ogramming Installation Figur e I-P -2. BA Y SENS020 ke ypad and display configur ation BA Y SENS020 BA Y SENS020 Ke ypad and Display Explanation 1. Up and Down Buttons • Increases or decreased programmed temperature settings in program menu.
SCXG-SVX0 1B-EN 59 Program Button Depressing the program button will toggle the display from normal run mode to the program menu. See Figure I-P-3. Before toggling to the program menu, use the mode button to select the type setpoints to review or program (heat, cool or auto).
60 SCXG-S VX0 1B-EN a temporary manual override menu. See Figure I-P-4. This mode overrides any number of programmed setpoints through any of the 28 programmed periods. After entering setpoints and length of override time, these settings are now used.
SCXG-SVX0 1B-EN 61 T emporary Ov er r ide Run Mode The temporary override run mode sends setpoint data to the unit control module (UCM) from the setpoint data entered in the temporary manual override menu.
62 SCXG-S VX0 1B-EN T able I-P -1 . Zone sensor BA Y SENS01 9 option menu settings option description value factory setting 1 morning warmup 0 = disabled 0 1 = enabled 2 economizer minimum 0 = disable.
SCXG-SVX0 1B-EN 63 pr ogramming Installation T able I-P -2. Zone sensor BA Y SENS020 option menu settings option description value factory setting 1 morning warmup 0 = disabled 0 1 = enabled 2 economi.
64 SCXG-S VX0 1B-EN pr ogramming Installation Icon Descr iptions BA Y SENS0 19 Icon Descr iptions Refer to Figure I-P-9 for the written descriptions below. 1. The four periods of the day used only during programming mode. 2. The seven days of the week used during programming and in normal mode to display the day (not current in Program Menu).
SCXG-SVX0 1B-EN 65 pr ogramming Installation Figur e I-P -1 0 . BA YSENS020 complet e icon display BA Y SEN020 Icon Descriptions Refer to Figure I-P-10 for the written descriptions below. 1. The four periods of the day used only during programming mode.
66 SCXG-S VX0 1B-EN Pr ogramming the Time Cloc k Option Setting the Time Important: Depress the reset key before beginning to set time and program. 1 . S elect military (24:0 0 hr .) or AM/PM (12:00 hr .) time mode by depressing and holding the “h” key while pressing “+ 1h” key to toggle between military and AM/PM.
SCXG-SVX0 1B-EN 67 Unit Start up Procedur es W ARNING Hazardous V oltag e w/Capaci- tors! Disconnect all electric po wer , including remote disconnects before servicing. Follow proper lockout/tagout proce- dures to ensure the power cannot be inadvertently energized.
68 SCXG-S VX0 1B-EN Installation Startup Log Complete this log at unit startup. Unit: ____________________________ Unit Location: _________________________________________ Unit V oltage: __________ __.
SCXG-SVX0 1B-EN 69 Installation star tup ___________________________________________________________________________________________________________________________ Water Cooled Units: Circuit A: ente.
70 SCXG-S VX0 1B-EN Operation general information Binary outputs • V .O . relay P oints List - T racer TM LCI-I Module Constant V olume (CV) Points Binary inputs • Air side economizer enable/disab.
SCXG-SVX0 1B-EN 71 Unit Control Components The Modular Series IntelliPak self- contained unit is controlled by a microelectronic control system that consists of a network of modules. These modules are referred to as unit control modules (UCM). In this manual, the acronym UCM refers to the entire control system network.
72 SCXG-S VX0 1B-EN T able O-GI-2. RTM sensor r esistance vs. t emperat ure temperature, °F resistance, Ω ohms temperature, °F resistance, Ω ohms -40 346.1 7 1 1 1 .60 -30 241 .7 7 2 1 1 .31 -20 170.1 7 3 1 1 .03 -1 0 121 .4 7 4 1 0.7 6 - 5 1 03.0 7 5 1 0.
SCXG-SVX0 1B-EN 73 Compr essor Module (MCM - Standard on all Units The compressor module, (single circuit and multiple circuit) energizes the appropriate compressors and condenser fans upon receiving a request for mechanical cooling. It monitors the compressor operation through feedback information it receives from various protection devices.
74 SCXG-S VX0 1B-EN Figur e O-GI-2. V elocity pr essur e transducer/ solenoid assembly PURGE sequence “D” This sequence can purge the air out of a building before coming out of unoccupied mode of operation in a V A V system. Also, it can be used to purge smoke or stale air.
SCXG-SVX0 1B-EN 75 Gener ic Building A ut omation System Module Option The generic building automation system module (GBAS) provides broad control capabilities for building automation systems other than T rane ’ s T racer system.
76 SCXG-S VX0 1B-EN T able O-GI-6. GBAS analog input setpoints control parameter signal range setpoint range occupied zone cooling setpoint 0.5 to 4.5 vdc 50 to 90°F (CV units only) unoccupied zone cooling setpoint 0.5 to 4.5 vdc 50 to 90°F (CV and V AV) occupied zone heating setpoint 0.
SCXG-SVX0 1B-EN 77 W aterside Components Waterside components consist of water piping, water valves, water flow switch option, water cooled condensers (SXWF only), and the economizer option.
78 SCXG-S VX0 1B-EN Condenser 1 Condenser 2 V2 Condenser 2 V1 Economizer Condenser 1 Condenser 2 V2 Figure O-GI-3. Basic water piping, constant water flow Figure O-GI-4.
SCXG-SVX0 1B-EN 79 Unit Airside Components The unit’ s air deli very system consists of dampers, enthalpy switch option, airside economizer option, filters, low ambient sensors, and factory mounted single or double wall plenums. Supply Air Fan The unit has a single supply fan that runs at a constant speed.
80 SCXG-S VX0 1B-EN stage of cooling, in occupied or unoccupied mode and when ambient conditions are favorable for economizing. Inherent in the unit controller is the ability to suppress the setpoint below the normal unit setpoint.
SCXG-SVX0 1B-EN 81 peak operating efficiency . An outside air temperature and relative humidity sensor are provided for field installation to monitor reference enthalpy . Economizer operation enables when the outside air enthalpy is less than 25 BT u/lb (adjustable 1 9-28 BT u/lb.
82 SCXG-S VX0 1B-EN Input Devices and System Functions Following are basic input device and system function descriptions used within the UCM network on IntelliPak self- contained units.
SCXG-SVX0 1B-EN 83 W at er -cooled: Units without WSE, the condenser valve modulates to maintain an average saturated condenser tem- perature. Units with WSE, if economizing and mec hanical cooling is necessary the economize valve will sacrifice free cooling and modulate to maintain condensing saturated temperature.
84 SCXG-S VX0 1B-EN Control Sequences of Operation Occupied/Unoccupied Switching There are four ways to switch occupied/ unoccupied: (1) Night setback zone sensor (2) Field-supplied contact closure (h.
SCXG-SVX0 1B-EN 85 seq uence of operation is reached. Next a 60 minute timer begins. If the building load reaches the MWU ventilation setpoint, or the 60 minutes expire, whichever is first, the airside economizer will control to the minimum position. MWU will end when the zone temperature rises above the MWU terminate setpoint.
86 SCXG-S VX0 1B-EN seq uence of operation Occupied Sequence All setpoints can be adjusted using the HI panel. Also, cooling/heating setpoints can be adjusted in the zone, if using one of the zone sensor options (BA YSENS020, BA YSENS021, BA YSENS108, BA YSENS1 1 0, BA YSENS0 1 9, or BA YSENS07 4).
SCXG-SVX0 1B-EN 87 seq uence of operation Mechanical Cooling If the zone temperature cannot be maintained within the setpoint deadband using the economizer option or if there is no economizer , the R TM sends a cooling request to the MCM. The compressor module checks the compressor protection circuit before closing stage one.
88 SCXG-S VX0 1B-EN Compressors Units use two sizes of hermetic scroll compressors, 10 and 15 hp, and can use from two to six compressors. When viewing the front of the unit, compressors are identified A through B from left to right.
SCXG-SVX0 1B-EN 89 Low Ambient Compressor Lock out This function will lock out the compressor if the outdoor air temperature sensor reads an outdoor temperature below the low ambient compressor lockout temperature setpoint. This setpoint is adjustable at the human interface panel.
90 SCXG-S VX0 1B-EN seq uence of operation Figure O-SO-2. T ypical pulldown curve for unit oper ating proper ly within control band Figur e O-SO-3. T ypical pulldown curve for unit oper ating improper.
SCXG-SVX0 1B-EN 91 T able M-GI-1. SCWG/SIWG/SCRG/SIR G General Maint enance Data Water -Cooled Units Air -Cooled Units Unit Size 2 0 2 5 3 0 3 5 2 0 2 5 3 2 Compressor Data Quantity 2 2 1 /1 2 2 1/1 2 Nominal T on/Comp 10 10 10/15 15 10 10/15 15 Circuits 2 2 2 2 2 2 2 Evaporator Coil Data Rows 2 4 4 4 3 4 4 Sq.
92 SCXG-S VX0 1B-EN Maint enance Procedur es Air Filters Filter access doors are on the unit’ s lef t side. Filter access for the 2” filter rack on optional steam and hot water coils and airside economizers is also on the left side Figure M-MP -1 .
SCXG-SVX0 1B-EN 93 Inspecting and Cleaning the Drain Pan Check the condensate drain pan and drain line to ensure that the condensate drains properly at least every six months or as dictated by operating experience. If evidence of standing water or conden- sate overflow exists, take steps to identify and remedy the cause immediately .
94 SCXG-S VX0 1B-EN V ar iable Frequency Dr ive (VFD) The VFD access panel is hinged to allow service access to the fan motor and belt drive components that are located behind it. T o swing the panel open: • Remove the unit center cover panel to the left of the VFD panel.
SCXG-SVX0 1B-EN 95 F an Bear ings The opposite drive end bearing is a special bearing with close tolerance fit of balls and races. Replace this bearing with the same part number as the original bearing. Follow the fan bearing lubrication sc hedules in T ables M-MP -1 and M-MP -2.
96 SCXG-S VX0 1B-EN T able M-MP -4. F an shaft bear ing tor ques setscrew hex -size recommended torque size across flats In-lb ft-lb 1/4"-20 1/8" 180 15 5-16"-18 5-32" 402 33.5 T able M-MP -5. F an hub and sheav e tor ques unit fa n setscrew torque size dia.
SCXG-SVX0 1B-EN 97 Adjusting Belt T ension NO TICE Do not over -tension belts. Ex ces- sive belt t ension will reduce f an and motor bear ing lif e, acceler ate belt wear , and possibly cause shaft f ailur e. T o adjust belt tension refer to Figure M- MP-6 and perform the following procedure: 1.
98 SCXG-S VX0 1B-EN • T o assist in reducing power generation emissions, always attempt to improve equipment performance with improved maintenance and operations that will help conserve energy resources.
SCXG-SVX0 1B-EN 99 W ARNING Leak T esting! Do not exceed 200 psig when leak testing system. Failure to follow these instructions could result in an explosion causing death or ser ious injury .
100 SCXG-S VX0 1B-EN Figure M-MP -1 0. T ypical water -cooled (SXWF) compressor section components T o c harge the system, complete the following procedure: 1 . Charge liquid refrigerant into the liquid line service valve of eac h compressor circuit. The vacuum will draw some of the required refrigerant into the system.
SCXG-SVX0 1B-EN 101 Coil Fin Cleaning Keep coils clean to maintain maximum performance. For operation at its highest efficiency , clean the refrigerant coil of ten during periods of high cooling demand or when dirty conditions prevail. Clean the coil a minimum of once per year to prevent dirt buildup in the coil fins, where it may not be visible.
102 SCXG-S VX0 1B-EN Inspecting and Cleaning Coils Coils become externally fouled as a result of normal operation. Coil surface dirt reduces heat transfer ability and can cause comfort problems, increased airflow resistance and thus increased operating energy costs.
SCXG-SVX0 1B-EN 103 1 . Remove actuator motor from suppor t plate. 2. Remove shaft coupling. 3. T orque the pac king nut to 1 0-ft.-lbs. of torque. 4. Replace shaft coupling.
104 SCXG-S VX0 1B-EN Maint enance P er iodic Checklists Monthly Checklist The following check list provides the recommended maintenance schedule to keep the commercial self-contained equipment running ef ficiently .
SCXG-SVX0 1B-EN 105 System Checks W ARNING Live Electr ical Components! During installation, testing, servicing and troubleshooting of this product, it may be necessary to work with live electrical components.
106 SCXG-S VX0 1B-EN Diagnostics Refer to the IntelliPak Self-Contained Programming Guide, PKG-SVP01B-EN, for specific unit programming and troubleshooting information. In par ticular , reference the “Service Mode Menu” and “Diagnostic Menu”sections in the programming guide.
SCXG-SVX0 1B-EN 107 Reset R equired: (P AR) An automatic reset occurs after communication has been restored. Emergency Stop Problem: The emergency top input is open. Reason for Diagnostic: An open circuit has occurred on the emergency stop input caused either by a high duct temp t- stat trip, or the opening of field-provided contacts, switch, etc.
108 SCXG-S VX0 1B-EN designated the heat module auxillary temperature input as their input are disabled. Reset R equired: (P AR) An automatic reset occurs after the heat module auxillary temperature input returns to its allowable range for 10 seconds.
SCXG-SVX0 1B-EN 109 occurs after the mode input returns to its allowable range for 10 seconds. N NSB P anel Zone T emperatur e Sensor Failure Problem: The NSB panel's zone temp sensor input is out of range. (This input is at the NSB panel, not on the unit itself).
110 SCXG-S VX0 1B-EN RTM A ux. T emp. Sensor F ailure Problem: The RTM auxillary temperature sensor data is out of range. Check: Sensor resistance should be between 830 ohms (200°F)and 345.7 ohms (-40°F). If so, check field/unit wiring between sensor and RTM.
SCXG-SVX0 1B-EN 111 Supply Air T emp Cool Setpoint F ail Problem: The active supply air temperature cooling setpoint is out of range. Reason for Diagnostic: The input designated as the SA temp cooling setpoint is out is out of range (temp < 35°F or temp > 95°F).
112 SCXG-S VX0 1B-EN Reset R equired: (P AR) An automatic reset occurs after communication between T racer Summit and the LCI-I is restored. U Unit HI Communications Failure Problem: The RTM has lost communication with the unit mounted (local) human interface (HI).
SCXG-SVX0 1B-EN 113 • A “fan off ” request to “supply fan control” • A “close damper” request to “economizer actuator control” • The water pump to turn on and position all water .
114 SCXG-S VX0 1B-EN.
SCXG-SVX0 1B-EN 115.
www.trane.com For more information, contact your local T rane office or e-mail us at comfort@trane.com Literature Order Number Date Supersedes T rane has a policy of continuous product and product data improvement and reserves the right to c hange design and specifications without notice.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Trane SCXG-SVX01B-EN è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Trane SCXG-SVX01B-EN - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Trane SCXG-SVX01B-EN imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Trane SCXG-SVX01B-EN ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Trane SCXG-SVX01B-EN, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Trane SCXG-SVX01B-EN.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Trane SCXG-SVX01B-EN. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Trane SCXG-SVX01B-EN insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
