Installation, Operation, and Maintenance Intellipak™ Commercial Self-Contained Signature Series 20-110Tons SAFETY WARNING Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and air-conditioning equipment can be hazardous and requires specific knowledge and training. Improperly installed, adjusted or altered equipment by an unqualified person could result in death or serious injury.
Introduction Read this manual thoroughly before operating or servicing this unit. Warnings, Cautions, and Notices Safety advisories appear throughout this manual as required.Your personal safety and the proper operation of this machine depend upon the strict observance of these precautions. The three types of advisories are defined as follows: Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
Introduction WARNING Refrigerant under High Pressure! System contains oil and refrigerant under high pressure. Recover refrigerant to relieve pressure before opening the system. See unit nameplate for refrigerant type. Do not use non-approved refrigerants, refrigerant substitutes, or refrigerant additives.
Table of Contents Warnings, Cautions and Notices . . . . . . . . . . 2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Model Number Descriptions . . . . . . . . . . . . . . 6 Self-Contained Ship-With Accessory Model Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Remote Air-Cooled Condenser Model Number Description . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 General Data . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Human Interface Module - Standard on all Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 Brazing Procedures . . . . . . . . . . . . . . . . . .85 Remote Human Interface Module Option 66 Components . . . . . . . . . . . . . . . . . . . . . . . . . .88 Waterside Module - Standard on all watercooled units . . . . . . . . . . . . . . . . . . . . . . . 66 Coil Fin Cleaning . . . . . . . . . . . . . . . . . . . . . .89 Heat Module . . . . . . . . . . . . . . . . . . . . . . .
Model Number Descriptions Self-Contained Digit 1 - Unit Model S = Self Contained Digit 2 - Unit Type C = Commercial I = Industrial Digit 3 - Condenser Medium W = Water-cooled R = Air-cooled Digit 4 - Development Sequence F = Signature Series Digit 5 - Refrigerant Circuit Configuration U = Standard Capacity V = High Capacity Digit 6, 7 - Unit Nominal Capacity 20 = 20 tons (water or air) 22 = 22 tons (water only) 25 = 25 tons (water or air) 29 = 29 tons (water or air) 30 = 30 tons (air only) 32 = 32 tons
Model Number Descriptions Digit 25 - Industrial Options A = Protective coating evaporator coil B = Silver solder C = Stainless steel screws D = A and B E = A and C F = B and C G = A, B, and C 0 = none Digit 26 - Drain Pan Type A = Galvanized sloped B = Stainless steel sloped Digit 27 - Waterside Economizer A = Mechanical clean full capacity (4-row) B = Mechanical clean low capacity (2-row) C = Chemical clean full capacity (4-row) D = Chemical clean low capacity (2-row) 0 = None Digit 28 - Ventilation Con
Model Number Descriptions Self-Contained ShipWith Accessory Model Number Remote Air-Cooled Condenser Model Number Description Digit 1 - Parts/Accessories Digit 1 - Unit Model P C = Condenser = parts/accessories Digit 2 - Unit Model Digit 2 - Unit Type S C = Commercial I = Industrial = self-contained Digit 3 - Shipment W = with unit Digit 3 - Condenser Medium Digit 4 - Development Sequence R = Remote F G Digit 4 - Development Sequence = = signature series modular series Digit 5 - Sens
General Data Signature Series Self-Contained Unit Components Commercial self contained units are complete HVAC systems used in floor-by-floor applications. Units are easy to install because they feature a single point power connection, factory installed and tested controls, single water point connection, factory installed options, and an internally trapped drain connection. See Figure 1, p. 9 and Figure 2, p. 10 for typical unit components.
General Data which can be configured for either English, French, or Spanish. The optional remote human interface (RHI) will control up to four self-contained units, each containing an interprocessor communications bridge (IPCB). It has all the same features as the unit-mounted HI except for the service mode. For more information on setpoint defaults and ranges and unit programming, see the IntelliPak™ Self-Contained Programming Guide, PKG-SVP01*-EN. A copy ships with each unit. Figure 2.
General Data General Data Table 1. SCWF/SIWF Water-cooled self-contained, 20 to 42 tons Unit Size 20 22 25 29 32 35 38 42 Compressor Data Quantity Nominal Ton/comp Circuits 2 2 2 1/1 1/1 3 3 2/1 10 10 10 15/10 15/10 10 10 10/15 2 2 2 2 2 3 3 3 Evaporator Coil Data Rows 2 2 3 or 6 2 4 or 6 3 4 or 6 3 21.81 21.81 21.81 29.98 29.98 31.35 31.35 38.
General Data Table 2. SCWF/SIWF Water-cooled self-contained, 46-110 tons Unit Size 46 52 58 65 72 80 90 100 110 Compressor Data Quantity Nominal Ton/Comp Circuits 2/1 3 3 3/1 3/1 4 5 2/4 6 10/15 15 15 15/10 15/10 15 15 10/15 15 3 3 3 4 4 4 5 6 6 Evaporator Coil Data Rows 4 or 6 2 4 or 6 3 4 or 6 6 6 6 6 Sq. Ft. 38.57 49.09 49.09 49.09 49.09 49.09 56.81 56.81 56.
General Data Table 3. SCRF/SIRF Air-cooled self-contained Unit Size 20 25 29 30 35 40 50 60 Compressor Data Quantity Nominal Ton/Comp Circuits 2 1/1 1/1 3 3 2/1 3 4 10 15/10 15/10 10 10 10/15 15 15 2 2 2 2 2 2 2 2 Evaporator Coil Data Rows Sq. Ft. FPF 3 2 4 3 4 4 4 6 21.81 29.98 29.98 31.35 31.35 38.57 49.09 49.09 144 144 144 120 144 144 144 144 Evaporator Fan Data Quantity Diameter (in.) 1 1 1 1 1 1 1 1 18 18 18.
General Data Table 4. CCRC/CIRC Remote air-cooled condenser Unit Size 20 29 35 40 50 60 4/Prop/Direct 4/Prop/Direct 6/Prop/Direct 6/Prop/Direct 8/Prop/Direct 8/Prop/Direct 26 26 26 26 26 26 (660.4) (660.4) (660.4) (660.4) (660.4) (660.4) 1 1 1 1 1 1 Condenser Fan Data Number/Type/Drive Diameter (in.) Diameter (mm) HP ea.
General Data Table 6. SCWF/SIWF water flow volumes Water Volume in U.S. Gallons / Liters Unit w/o Economizer Size With Mech. With Chem. Cleanable Econ Cleanable Econ Gallons Liters Gallons Liters Gallons Liters 20 9.0 34.1 17.4 65.9 16.9 64.0 22 9.0 34.1 17.4 65.9 16.9 64.0 25 9.0 34.1 17.4 65.9 16.9 64.0 29 9.0 34.1 20.5 77.6 18.8 71.2 32 9.0 34.1 20.5 77.6 18.8 71.2 35 10.0 37.9 21.9 82.9 20.2 76.5 38 10.0 37.9 21.9 82.9 20.2 76.5 42 15.
General Data Table 9. Filter data, water-cooled units models SCWF & SIWF Unit Size 20- 38T 40-85T 90-110T 8 - 20x18 12 - 25 x 20 15 - 24 x 24 4 - 20 x 20 6 - 20 x 20 3 - 24 x 12 Number - Size (In.) Units With Hot Water Or Steam Number - Size (In.) 4 - 16x20 4 - 25 x 20 4 - 20 x 20 2 - 20 x 20 4 - 18 x 20 8 - 25 x 16 n/a 4 - 20 x 16 Table 10. Filter data, air-cooled units models SCRF & SIRF Unit size 20- 35 tons 40-60 tons Number - Size (in.
Pre-Installation Receiving Receiving Checklist Contractor Installation Responsibilities Complete following checklist immediately after receiving shipment to detect any shipping damage. Complete the following checklist before beginning final unit installation. • Inspect individual cartons before accepting. Check for rattles, bent carton corners, or other visible indications of shipping damage. • Verify the unit size and tagging with the unit nameplate.
Pre-Installation Unpackaging Commercial self-contained units ship assembled with protective coverings over the coil and discharge openings. Figure 3, p. 18 illustrates a typical shipping package. Figure 3. Typical unit shipping package Shipping Cover Unit Protective Covers Remove shipping protection coverings from human interface panel (HI) at control panel, filter box (or air inlet opening), discharge air opening, and optional variable frequency drive (VFD).
Dimensions & Weights Table 13.
Dimensions & Weights Figure 5. 20-38 ton self-contained Notes: 1. All unit weights include refrigerant, water, controllers, electric heat and valves. 2. Add 150 lbs. to total weight to obtain approximate shipping weight.
Dimensions & Weights Figure 6. 42-80 ton self-contained Notes: 1. All unit weights include refrigerant, water, controllers, electric heat and valves. 2. Add 150 lbs. to total weight to obtain approximate shipping weight.
Dimensions & Weights Figure 7. 90-110 ton self-contained: front view Plenum (low, standard, and extended height shown) Ext. Height 43.50" Std. Height 27.75" 19.625" Low Height Human Interface VFD/ Interface 89.50" Unit Control Box 140.00" Figure 8. 90-110 ton self-contained: top view (isolator mounting locations shown) 3.50" 133.00" 3.50" Filter Rack * * * 86.25" 80.50" 72.00" * * * Isolator Mounting Location (x6) on bottom of unit 69.
Dimensions & Weights Figure 9. Detail A: electrical connections 20-110 tons 40 3/8” (20-38Ton) PLUGS PLUGS Table 16. Discharge dimensions, in. Unit Model Fan Size A B C D Standard Fan SCWF 20-25 SCRF 20 18” 31.85 23.5 23.11 20.4 SCWF 29-32 SCRF 25-29 18” 31.85 23.5 23.11 20.4 SCWF 35-38 SCRF 30-35 20” 30.5 26.2 21.25 25.75 SCWF 42-58 SCRF 40-50 25” 43.75 33.0 31.5 31.5 SCWF 65-80 SCRF 60 27.5” 43.5 33.5 28.63 34.5 SCWF 90-110 27.5” 50.70 33.5 28.8 34.
Dimensions & Weights Figure 10. Hot water coil Main Control Panel C B A Hot Water Outlet Connection D E Hot Water Inlet Connection Air Inlet G F H Table 17. Notes: 1. All coils are factory mounted, piped, and wired. 2. All piping connections are 1-1/2” (38.1mm) female NPT fittings. Hot water coil piping locations & weight, in-lbs.
Dimensions & Weights Figure 12. Flexible horizontal discharge plenum A C B Table 19. Plenum dimensions, in-lbs. Unit Size 20-38 42-80 90-110 A B C Weight low 64 7/8 24 5/8 95 7/8 325 std. 64 7/8 32 3/8 95 7/8 430 ext. 64 7/8 45 95 7/8 705 low 80 3/8 21 1/8 119 7/8 390 540 std. 80 3/8 28 5/8 119 7/8 ext. 80 3/8 45 119 7/8 705 low 80 1/2 19 5/8 140 430 std. 80 1/2 27 3/4 140 595 ext. 80 1/2 431/2 140 795 Figure 13. Six-inch filter rack Table 20.
Dimensions & Weights Airside Economizer Figure 14. Figure 15. Table 21.
Dimensions & Weights Service Clearances See Figure 16 for recommended service and code clearances. Figure 16. Top view of self-contained unit showing recommended service and code clearances(a) air inlet 18” minimum 36” minimum See footnote (a) VFD control panel 42” (20-38 tons) 48” (42-110 tons) (a) See Table 22, p. 27 for right side clearance values for various unit configurations. Table 22. Service and code clearance requirements Side Distance Purpose front 42 in. (20-38 tons) 48 in.
Installation - Mechanical Unit Handling Procedure WARNING Improper Unit Lift! Test lift unit approximately 24 inches to verify proper center of gravity lift point. To avoid dropping of unit, reposition lifting point if unit is not level. Failure to properly lift unit could result in unit dropping and possibly crushing operator/technician which could result in death or serious injury and possible equipment or property-only damage. Table 23. Gravity Block Dimensions 20-80 tons, in.
Installation - Mechanical Figure 19. Gravity block location and dimensions for 90-110 ton units Installation Preparation Before installing the unit, perform the following procedures to ensure proper unit operation. 1. Position the unit and skid assembly in its final location. 2. Test lift the unit to determine exact unit balance and stability before hoisting it to the installation location. See “Unit Handling Procedure,” p. 28 for proper rigging procedures and cautions. 3.
Installation - Mechanical Duct Connections recommends using Flexweave 1000, type FW30 or equivalent canvas. Use three inches for return duct and three inches for discharge duct. Keep material loose to absorb fan vibration. Return air enters the rear of the unit and conditioned supply air discharges through the top. Attach supply air ductwork directly to the unit’s top panel, around the fan discharge opening. A duct collar is not provided.
Installation - Mechanical Airside Economizer Installation Note: Airside economizer option available on 20-80 tons only. Economizer Handling 1. Hoist the damper cabinet to the installation location with straps positioned under the skid as shown in Figure 23, p. 31. Use spreader bars to prevent unit damage during lifting. 2. With the damper cabinet at its final location (near the unit), remove the screws securing it to the skid from the side flanges. Retain these screws for later use.
Installation - Mechanical Water Piping Condenser Connections WARNING High Pressure Water! Provide relief valves on system water piping to prevent instantaneous release of high pressure water. Failure to provide relief valves could result in death or serious injury or water pump damage or unit failure. NOTICE: Proper Water Treatment Required! The use of untreated or improperly treated water in coils could result in scaling, erosion, corrosion, algae or slime.
Installation - Mechanical Water Temperature Requirements Do not allow the entering water temperature to go below 54°F (12.2°C) on units with constant water flow (basic piping).This will cause the compressors to shut down and the mechanical cooling function will lockout. However, the economizer (if enabled) will continue to function.The compressors will reset when the entering water temperature reaches 58°F (15°C).
Installation - Mechanical and repair leak using proper brazing procedures. See Maintenance section, “Brazing Procedures,” p. 85. Retest unit(s) to ensure all leaks are repaired. Continue with piping installation. Interconnecting Piping Refrigerant piping must be properly sized and applied. These two factors have a significant effect on both system performance and reliability. Using Table 24, p. 34, select proper liquid and discharge line size. Unit connection sizes are also shown.
Installation - Mechanical Preliminary Refrigerant Charging WARNING Confined Space Hazards! Do not work in confined spaces where refrigerant or other hazardous, toxic or flammable gas may be leaking. Refrigerant or other gases could displace available oxygen to breathe, causing possible asphyxiation or other serious health risks. Some gases may be flammable and or explosive. If a leak in such spaces is detected, evacuate the area immediately and contact the proper rescue or response authority.
Installation - Mechanical 8. DO NOT add refrigerant in the suction line during preliminary charging to minimize refrigerant in system low side prior to compressor start. 9. Record charge amount added. 10. If total charge is not reached see “Final Refrigerant Charge,” p. 76. 11. Verify wiring has been returned to original. • Air Cooled Only: Verify liquid line solenoid valve has been returned to original. Table 25.
Installation - Electrical Unit Wiring Diagrams Voltage Range Specific unit wiring diagrams are provided on the inside of the control panel door. Use these diagrams for connections or trouble analysis. Voltages must be within +- 10% the nameplate voltage. Ensure the unit voltage is balanced by measuring at the compressor terminals. Voltage imbalance on three phase systems can cause motor overheating and premature failure. Maximum allowable imbalance is 2.0%.
Installation - Electrical Selection Procedures MFS and MCB = 2.25 x largest motor amps (FLA or RLA) + the sum of the remaining motor amps. 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. Table 430 - 150 For units with the dual power option, there are two electrical circuits that need calculations using the formulas above: Voltage utilization range is ±10% Determination of minimum circuit ampacity (MCA).
Installation - Electrical Transducer Location Table 29. VFD electrical data Place head assembly in an area of the ductwork that will provide an average and evenly distributed airflow pattern. Use the following guidelines to determine an appropriate installation location. VFD L.I.C. Without Bypass With Bypass HP 200V 460V 575V 200V 460V 575V 7.5 23.8 10.6 8.8 32.2 10.6 8.8 10 32.2 14 11.1 48.3 14 16.6 15 48.3 21 16.6 61.9 21 16.6 20 61.9 27.6 21.4 78.2 27.6 21.4 25 78.
Installation - Electrical Standard with All IntelliPak Units Zone Sensor Options for IntelliPak™ Control Units Zone sensor options are available and be ordered with the unit or after the unit ships. Following is a full description of zone sensors and their functions. Installation instructions are on page 46. Programming instructions for the programmable zone sensor are on page 49. See Table 40, p. 65 for the zone sensor temperature vs. resistance coefficient curve.
Installation - Electrical CV and VAV Unit Zone Sensor Options Integrated Comfort™ Systems Sensors for CV and VAV Applications These zone sensor options are for use with cooling/heating Integrated Comfort System (ICS) systems. BAYSENS074 Description This electronic analog sensor features single setpoint capability and timed override with override cancellation.
Installation - Electrical Zone Sensor Installation WARNING Hazardous Voltage w/Capacitors! Disconnect all electric power, including remote disconnects and discharge all motor start/run capacitors before servicing. Follow proper lockout/ tagout procedures to ensure the power cannot be inadvertently energized.
Installation - Electrical Programmable Zone Sensors The BAYSENS119 programmable night set back sensor provides multi functional flexibility for both Constant Volume and Variable Air Volume control.This electronic programmable sensor includes auto or manual cooling and heating changeover with 7 day programming. Five tactile feel buttons located on the sensor front panel provide interface for all programming, including initial setup for CV or VAV control.
Installation - Electrical Time Clock Option Figure 30. Grasslin time clock option The time clock option has a programmable timer that is factory wired to the unoccupied input to provide on/off control.The time clock will not allow the unit to pass through the night setback/morning warmup mode, except on units with optional night heat/morning warm up, or programmable night setback. See Figure 30, p. 44.
Installation - Electrical Remote Human Interface Panel Installation WARNING Proper Field Wiring and Grounding Required! All field wiring MUST be performed by qualified personnel. Improperly installed and grounded field wiring poses FIRE and ELECTROCUTION hazards. To avoid these hazards, you MUST follow requirements for field wiring installation and grounding as described in NEC and your local/state electrical codes. Failure to follow code could result in death or serious injury.
Installation - Electrical Mounting the Remote Human Interface (RHI) Panel Note: If the two screws are not installed as called out in the previous step, hold against the key pad plate while installing the door in the next step, to prevent it from falling out. The installer must provide all mounting hardware such as; hand tools, electrical boxes, conduit, screws, etc. Refer to Figure 32, p. 47 for the mounting hole and knockout locations. d.
Installation - Electrical Figure 32.
Installation - Electrical Wiring the Remote Human Interface WARNING Hazardous Voltage w/Capacitors! Disconnect all electric power, including remote disconnects and discharge all motor start/run capacitors before servicing. Follow proper lockout/ tagout procedures to ensure the power cannot be inadvertently energized.
Installation - Electrical Figure 33. Dressing shielded twisted wire Interprocessor Communication Bridge Module Wiring Refer to Figure 33, p. 49 and trim the outer covering of the shielded cable back approximately one inch. Cut the bare shield wire off even with the outer covering. Strip approximately 1/2-inch of insulation from each insulated wire in order to connect them to the terminal strip at the unit.Wrap tape around any exposed foil shield and/or base shield wire.
Installation - Electrical 6. Press “Day” key repeatedly to the day of the week. (1 is Monday, 7 is Sunday) 7. Release “” key, colon will begin flashing. Note: If keys h + or m + are kept depressed for longer than 2 seconds, a rapid advance of figures will result. The “Digi 20” electronic time switch is freely programmable for each day of the week in one minute increments.
Operating Control Sequences of Operation Occupied/Unoccupied Switching There are four ways to switch occupied/unoccupied: Note: Note: Unoccupied economizer operation can be enabled or disabled at the HI or usingTracer Summit. Figure 34. Typical cycling morning warmup cycle 1. Night setback zone sensor 2. Field-supplied contact closure (hard wired binary input to RTM) MWU Ventilation Enable 3. Tracer Summit 4.
Operating position. MWU will end when the zone temperature rises above the MWU terminate setpoint. Upon entering occupied mode, the occupied/unoccupied relay will de-energize. Timed Override Activation - ICS™ Zone Temperature Control (Unit Model Number Digit 9 = 4 or 5) This function is operational whenever the unit’s RTM module is used as the zone temperature sensor source, which can be set at the HI panel.
Operating When both airside and waterside economizers are on a single unit, priority must be set at the HI.The economizer with the highest priority attempts cooling first. Once it is operating at its maximum, and if additional cooling is necessary, the other economizer enables before mechanical cooling begins.
Operating cooling, thus savings in compressor kW, but an increase in supply fan kW may occur. supply air cooling setpoint.This function maintains duct static pressure. Outdoor air heating reset is the inverse of cooling, with the same principles applied. Thermostatic Expansion Valve For both outdoor air cooling reset and heating reset, there are three user defined parameters that are adjustable through the human interface panel.
Operating Compressor Cycling Capacity is based on an integrating control concept.The unit capacity matches the existing load and maintains an average supply air temperature within the supply air setpoint temperature control band region. Compressors cycle to maintain the operating state required by the temperature controls. In the event of a compressor failure, the next available compressor turns on. Refer to Table 35, p. 55 for compressor cycling by unit model and tons.
Operating Table 35.
Operating Water Purge NOTICE: Proper Water Treatment! The use of untreated or improperly treated water in coils could result in scaling, erosion, corrosion, algae or slime. It is recommended that the services of a qualified water treatment specialist be engaged to determine what water treatment, if any, is required. Trane assumes no responsibility for equipment failures which result from untreated or improperly treated water, or saline or brackish water.
Operating Waterside Economizer Flow Control Units equipped with a waterside economizer can be set from the human interface panel for variable or constant water flow. opens, establishing full water flow through the condensers. Full water flow is always maintained through the condensers when mechanical cooling is required. Both valves close whenever cooling is not required, and in the event of a power failure.
Operating occupied mode and except when a unit is in the night heat/ morning warm-up mode. During the night heat and setback mode the fan cycles on and off in response to a call for heat. See Table 38, p. 59 for available fan horsepower. Table 38. Supply fan horsepower selections Unit Model HP SXRF SXWF 5 20 20, 22, 25 7.
Operating compensate for VAV supply air modulation is inherent in the unit controls, and can be enabled by the operator. If the unit does not have an ECEM board, it will economize when the O/A temperature falls below the O/A economizer setpoint. The mixing box fabrication is galvanized steel. Opposed low leak damper blades are fabricated from galvanized steel and rotate on rustproof nylon bushings. A factory installed 24V modulating spring return actuator controls both damper positions.
Operating and when ambient conditions are favorable for economizing. Inherent in unit controller is the ability to suppress setpoint below normal unit setpoint.This allows the building to improve comfort levels when possible, and at the same time, optimize building mechanical cooling operation for peak operating efficiency. An outside air temperature and relative humidity sensor are provided for field installation to monitor reference enthalpy.
Controls Points List RTM Module Binary Inputs ECEM Module Analog inputs • Return air temperature • Return air humidity • Emergency stop • External auto/stop • Unoccupied/occupied Binary inputs • Dirty filter • VOM mode A, unit off • VAV changeover with hydronic heat • VOM mode B, pressurize • VOM mode C, exhaust • VOM mode D, purge • VOM mode E, purge w/duct pressure control Binary outputs In addition, units with a VOM have: • VAV box drive max (VAV units only) • CV unoccupied
Controls • Occupancy bypass time • Compressor on/off status • Outdoor air damper minimum position setpoint • Condenser circuit information • Outdoor air relative humidity • Condenser type (water or air cooled) • Outdoor air temperature • Condenser waterflow status • Unit start delay time setpoint • Condenser waterflow status • Zone temperature • Condenser water pump status • Zone temperature setpoint Analog Inputs • Zone temperature setpoint (default) • Airside economizer dry b
Controls Phase Monitor Unit is equipped with phase monitor in control box.The phase monitor will protect against phase loss, imbalance and reversal of line voltage. If a fault occurs, the red LED will energize. While the fault condition is present, the phase monitor interrupts the 115V control circuit. If no faults are observed, a green LED will be energized. economizer minimum position when using the OA cfm compensation function. Table 39.
Controls a. diagnostic and mode status signals to the remote panel (LEDs) and to the Human Interface. b. control of the binary alarm output on the RTM. c. control of the binary outputs on the GBAS module to inform the customer of the operational status and/or diagnostic conditions. Occupied/Unoccupied Inputs There are four ways to switch to occupied/unoccupied: 1. Field-supplied contact closure hard wired binary input to the RTM 2. Programmable night setback zone sensor 3. Tracer Summit 4.
Controls Table 41. RTM setpoint analog inputs Cooling or Heating Setpoint Input, °F (using RTM as zone temp. source) ohms Table 42. Cooling Setpoint Input, °F (using RTM as supply air temp. source) resistance, V 50 50 899 55 55 796 60 60 695 65 65 597 70 70 500 75 75 403 80 80 305 NA 85 208 NA 90 111 RTM resistance value vs.
Controls functions such as; space pressurization, exhaust, purge, purge with duct pressure control, and unit off. Once the ventilation sequences are configured, they can be changed unless they are locked using the HI. Once locked, the ventilation sequences cannot be unlocked. The compressors and condenser fans disable during the ventilation operation.
Controls BACnet® Communications Interface (BCI-I) Module The BACnet® Communication Interface for IntelliPak selfcontained (BCI-I) controller expands communications from the unit UCM network toTracer SC or a 3rd party building automation system, utilizing BACnet, and allows external setpoint and configuration adjustment and monitoring of status and diagnostics.The BCI-I utilizes the BACnet defined MS/TP protocol as defined in ASHRAE standard135-2004.
Controls GBAS Binary Input Table 43. Minimum outside air setpoint w/VCM module and Traq™ sensing Unit Input volts Cfm SXWF 20 0.5 - 4.5 vdc 6,325-8,500 SXWF 22 0.5 - 4.5 vdc 6,325-9,350 SXWF 25 0.5 - 4.5 vdc 6,500-10,625 One binary input for the self-contained unit to utilize the demand limit function.This function is operational on units with a GBAS and is used to reduce electrical consumption at peak load times. Demand limiting can be set at either 50% or 100%.
Controls If the static pressure range is 0.0-5.0 iwc: Table 44. GBAS analog input setpoints (continued) Signal Range Setpoint Range VDC °F IPV = (SP)(0.8) + 0.5 Control Parameter SP = [IPV/(0.8 + 0.5)] (CV and VAV) GBAS Demand Limit Relay (Binary Input) The GBAS allows the unit to utilize the demand limit function by using a normally open (N.O.) switch to limit the electrical power usage during peak periods. Demand limit can initiate by a toggle switch closure, a time clock, or an ICS control output.
Controls waterside economizer if the user has enabled the purge function at the HI.The water purge function circulates water to introduce fresh water-treatment chemicals and help prevent water stagnation.The number of hours between each periodic purge, or purge duration, is userdefined at the HI between 1-999 hours. If the periodic purge timer expires while the unit is in occupied mode, it will wait for the next available unoccupied time before initiating water purge.
Controls operate if the temperature of the outside air falls below the lockout setpoint. When the temperature rises 5°F above the lockout setpoint, the compressors will operate.The setpoint for units without the low ambient option is 50°F. For units with the low ambient option, the setpoint is 0°F. The setpoints are adjustable at the human interface panel. If the LEATPD is on a unit with factory-installed heat, it is mounted in the heat section and connected to the heat module.
Pre-Start Before starting up units perform the following procedures to ensure proper unit operation. To close and reattach the panel, reverse the above procedures. Units with VFD Note: Verify that all wires are in proper position and not rubbing once the panel has been secured. This panel is hinged to allow service access to fan motor and belt drive components that are located behind it. Note: The panel weight rating is 225 lbs. total including factory-installed components.
Pre-Start Units with Electric Heat • Verify the supply air temperature sensor is downstream of the electric heat coil. Electrical • Verify electrical connections are tight. Components • Verify liquid line service valve, and suction and discharge service valves if present, are open at startup. Note: Each compressor suction line contains a low pressure sensor that will shut the compressor down in low pressure situations. See Table 36, p. 56. • Ensure system components are properly set and installed.
Start-Up 2. Make sure all service valves are open. WARNING Live Electrical Components! During installation, testing, servicing and troubleshooting of this product, it may be necessary to work with live electrical components. Have a qualified licensed electrician or other individual who has been properly trained in handling live electrical components perform these tasks. Failure to follow all electrical safety precautions when exposed to live electrical components could result in death or serious injury.
Start-Up 14. As soon as a compressor starts, verify correct rotation. If a scroll compressor is allowed to run backwards for even a very short period of time, internal compressor damage could occur and compressor life could be reduced.When rotating backwards scroll compressors make a loud noise, do not pump, and draw about 1/2 expected amps, and low side shell gets hot. Immediately shut off a compressor rotating backwards and correct wiring.
Start-Up Operating & Programming Instructions See IntelliPak™ Self-Contained Programming Guide, PKGSVP01B-EN, for available unit operating setpoints and instructions. A copy ships with each unit. For units with VFD option, see installer guide that ships with each VFD. Startup Log Complete this log at unit startup.
Start-Up entering water pressure, psig: __________ leaving water pressure, psig: __________ Circuit C: entering water temperature °F: __________ leaving water temperature °F: __________ entering water pressure, psig: __________ leaving water pressure, psig: __________ Circuit D: enter water temperature °F: __________ leaving water temperature °F: __________ entering water pressure - psig: __________ leaving water pressure, psig: __________ Circuit E: enter water temperature °F: ________
Maintenance Service Access Access unit controls through the front, top left panel.The panel is secured with two quick- acting fasteners and an automatic latch, which require a screwdriver to remove. Removable unit panels on the right-hand side provide access to compressors, fan, motor belts, extended grease line fittings, and drive side bearing.
Maintenance Figure 42. Unit filter sizes and placement for SXWF 2038 tons or SXRF 20-35 tons Without steam or hot water coil Without steam or hot water coil 18 x 20 18 x 20 18 x 20 18 x 20 20 x 20 20 x 20 20 x 20 20 x 20 18 x 20 18 x 20 18 x 20 20 x 20 18 x 20 18 x 20 24 x 24 24 x 24 24 x 24 24 x 24 24 x 12 24 x 24 24 x 24 24 x 24 24 x 24 24 x 24 24 x 12 24 x 24 24 x 24 24 x 24 24 x 24 24 x 24 24 x 12 Note: All filters are 2”.These views are from the back of the unit (L-R).
Maintenance specifically designed for HVAC use. Carefully follow the sanitizer manufacturer’s instructions regarding product use. 6. Immediately rinse the drain pan thoroughly with fresh water to prevent potential corrosion from the cleaning solution. 7. Allow the unit to dry thoroughly before putting the system back into service. 8. Properly dispose of all contaminated materials and cleaning solution.
Maintenance 1. Measure belt span between centers of sheaves and set the large “O” ring of the tensioning gauge at 1/64 inch for each inch of belt span. Figure 45. Fan shaft and motor sheave alignment 2. Set the load “O” ring at zero. 3. Place the large end of the gauge at the center of the belt span. Press down until the large “O” ring is even with the top of the belt line or the next belt as in Figure 46, p. 83. Place a straight edge across the sheaves as a reference point. See Figure 45, p. 82.
Maintenance Adjusting Belt Tension NOTICE: Belt Tension! Do not over-tension belts. Excessive belt tension will reduce fan and motor bearing life, accelerate belt wear and possibly cause shaft failure. The correct operation tension for a V-belt drive is the lowest tension at which the belt will not slip under the peak load conditions. It may be necessary to increase the tension of some drives to reduce flopping or excessive startup squealing. Figure 47.
Maintenance Figure 48. Right-side view of the self contained unit Refrigerant System Should refrigerant system repair be required, LeakTest, Brazing and Evacuation Procedures are described. Preliminary Charging is described in the InstallationMechanical section, “Preliminary Refrigerant Charging,” p. 35 and Final Charging is described in Start-up section, “Final Refrigerant Charge,” p. 76. Ignore Air Cooled Only steps for Water Cooled systems.
Maintenance WARNING Hazardous of Explosion! Do not exceed unit nameplate design pressures when leak testing system. Failure to follow these instructions could result in an explosion causing death or serious injury. WARNING R-410A Refrigerant under High Pressure! The units described in this manual use R-410A refrigerant. Use ONLY R-410A rated service equipment or components with these units. For specific handling concerns with R-410A, please contact your local Trane representative.
Maintenance 3. Make sure the inner and outer tubes of the joint are symmetrical and have a close clearance, providing an easy ‘slip’ fit. If the joint is too loose, the connection’s tensile strength is significantly reduced. Ensure the overlap distance is equal to the inner tube diameter. 4. Wrap each refrigerant line component with a wet cloth to keep it cool during brazing. Excessive heat can damage the internal components. Note: Rubber or synthetic hoses are not recommended for system evacuation.
Maintenance vacuum with refrigerant and complete the remaining PreStart procedures before starting the unit. Figure 50. Typical vacuum pump hookup Figure 51. Evacuation time vs.
Maintenance Components Figure 52.
Maintenance Coil Fin Cleaning WARNING Hazardous Chemicals! Coil cleaning agents can be either acidic or highly alkaline and can burn severely if contact with skin occurs. Handle chemical carefully and avoid contact with skin. ALWAYS wear Personal Protective Equipment (PPE) including goggles or face shield, chemical resistant gloves, boots, apron or suit as required. For personal safety refer to the cleaning agent manufacturer’s Materials Safety Data Sheet and follow all recommended safe handling practices.
Maintenance 9. Replace all panels and parts and restore electrical power to the unit. 10. Ensure that contaminated material does not contact other areas of the equipment or building. Properly dispose of all contaminated materials and cleaning solutions. Refrigerant Coils WARNING Hazardous Voltage w/Capacitors! Disconnect all electric power, including remote disconnects and discharge all motor start/run capacitors before servicing.
Maintenance 4. Flush tubes with water to push the sludge out through the drain opening in the bottom of the supply header and the return pipe. 5. To clean the economizer tubes, remove the cast iron header plates at both sides of the coil between the inlet and outlet headers (four-row coils only; two-row coils do not have cover plates at right end). Rotate round brush through tubes from left end to loosen contaminants. Flush tubes with water. 6. Replace condenser end plates and clamps.
Maintenance indicate an obstruction. Replace the filter drier if it appears clogged. 7. Inspect the optional waterside economizer coil. Clean the coil to prevent airflow restrictions through the fins. 8. Check and record operating pressures. Semi-Annual Maintenance 1. Verify the fan motor is properly lubricated. Follow lubrication recommendations on the motor tag or nameplate. Contact the motor manufacturer for more information. 2. Lubricate fan bearings.
Diagnostics Troubleshooting System Checks WARNING Live Electrical Components! During installation, testing, servicing and troubleshooting of this product, it may be necessary to work with live electrical components. Have a qualified licensed electrician or other individual who has been properly trained in handling live electrical components perform these tasks. Failure to follow all electrical safety precautions when exposed to live electrical components could result in death or serious injury.
Diagnostics the S/A static pressure limit setpoint for at least one second continuously. circuit energize (as described in the compressor protection function). UCM Reaction: A "supply air pressure shutdown" signal is sent to the following functions: UCM’ Reaction: A “lockout ckt #1, 2, 3, or 4” request is issued to the compressor staging control function. a. Compressor staging control, Reset Required: (PMR) A manual reset is required after this diagnostic occurs.
Diagnostics a. Compressor staging/chilled water cooling control Reset Required: (PAR) An automatic reset occurs after the #1, 2, 3, or 4 evap temp input returns to its allowable range for 10 seconds. b. Heat operation G c. Supply fan control and proof of operation GBAS 0-5 VDC Module Comm Failure d. Exhaust fan control and proof of operation. e. Exhaust actuator control Problem:The RTM has lost communication with the GBAS module. f.
Diagnostics UCM Reaction:The functions that designated the heat module auxiliary temperature input as their input are disabled. Reset Required: (PAR) An automatic reset occurs after the heat module auxiliary temperature input returns to its allowable range for 10 seconds. Heat Module Comm Failure Problem:The RTM has lost communication with the heat module. Check: Check field/unit wiring between RTM and heat module. Reason for Diagnostic:The RTM has lost communication with the heat module.
Diagnostics Check: Sensor resistance should be between 1 ohm and 40 ohms. If so, check field/unit wiring between sensor and RTM. Reason for Diagnostic:The mode input signal on the RTM is out of range (resistance < 1 ohm or resistance > 40 ohms). UCM Reaction:The system mode reverts to the default (HI set) system mode. Reset Required: (INFO) An automatic reset occurs after the mode input returns to its allowable range for 10 seconds. O/A Temp.
Diagnostics Return Air Temp Sensor Failure Problem: On units with the comparative enthalpy option, the return air temperature sensor input 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. Check: Sensor resistance should be between 830 ohms (200°F) and 345.7 ohms (-40°F). If so, check field/unit wiring between the sensor and ECEM.
Diagnostics UCM Reaction:The following functions are disabled; a. SA pressure control b. SA static pressure limit Reset Required: (PAR) An automatic reset occurs after the SA temp heating setpoint input returns to within range for 10 continuous seconds, or after a different SA temp heating setpoint selection source is user-defined. Supply Air Pressure Setpoint Failure Problem:The SA pressure input signal is out of range.
Diagnostics T Unoccupied Zone Cool Setpoint Failure LCI Module Comm Failure Problem:The unoccupied zone cooling setpoint input is out of range. Problem:The RTM has lost communication with the LCI. Check: Check field/unit wiring between RTM and LCI module. Reason for Diagnostic:The input designated as the unoccupied zone cooling setpoint source is out of range (temp < 45°F or temp > 94°F). Reason for Diagnostic:The RTM has lost communication with the LCI module.
Diagnostics UCM Reaction:The minimum airflow control function is disabled.The outside air damper minimum position function reverts to using the O/A flow compensation function if O/A flow compensation is enabled or to the default minimum position function if O/A flow compensation is disabled or not available. Reset Required: (PAR) An automatic reset occurs after the designated space pressure transducer sends a signal within range for 10 continuous seconds.
Wiring Diagrams Note: For easier access, published unit wiring diagrams (individual, separate diagrams for unitary product lines) will become available via e-Library instead of through wiring manuals after 2007.
Wiring Diagrams Drawing Number Description 2307-8300 Connection Diagram CV S*WF 20-80 & S*RF 20-60T 2307-8330 Connection Diagram CV S*WF 20-80 & S*RF 20-60T 2307-8297 Connection Diagram CV S*WF 85T 2307-8405 Connection Diagram CV RTM Modual S*WF 85T 2307-8293 Schematic Diagram Water-Cooled S*WF 85T 2307-8408 Schematic Diagram Heat, Vent Cntrl & GBAS S*WF 85T 2307-8409 Schematic Diagram ECEM, VOM LCI, IPCB, HI & RHI Mod S*WF 20-80T S*RF 20-60T 2307-8410 Connection Diagram CV S*WF 85T 2307-8
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