Trane SS-PRC003-EN manual Selection Procedure, Cooling Capacity, Heating Capacity

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Selection Procedure

Cooling Capacity

Step 1 — Calculate the building’s total and sensible cooling loads at design conditions. Use theTrane calculation form or any other standard accepted method.

Step 2 — Size the equipment usingTable PD-1. Match the cooling loads at design conditions.

Example:The following are the building cooling requirements

a

Electrical Characteristics: 380-415/50/3 b

Summer Design Conditions: Entering

Evaporator Coil: 80 DB/67WB (27 DB/19WB C)

Outdoor Ambient: 95° F (35° C) c

Total Cooling Load: 75 MBh (22 kW) d

Sensible Cooling Load: 53 MBh (15.5 kW)

e

Airflow: 3000 cfm (5097 m3/h)

External Static Pressure: 0.77 in. (192.5 Pa)

Table PD-1 shows that aTTA075A matched with aTWE075A has a gross cooling capacity of 86.5 MBh (25.3 kW) and 64.4 MBh (18.8 kW) sensible capacity at 95 DB (35° C) ambient and 3000 cfm (5097 m3/h) and 80 DB/67WB (27 DB/19WB) air entering the evaporator.

To find the net cooling capacities, fan motor heat must be subtracted. Determine the total unit static pressure:

 

In.

Pa

External Static

0.77

193

Standard Filter

0.10

25

Supplementary

 

 

Electric Heat

0.23

57

Total Static Pressure

1.10

275

Note:The Evaporator Fan Performance Table has included the effect of a 1 in. (250 Pa) filter already.Therefore, the actualTotal Static Pressure is 1.10 - 0.10 = 1.00 in. (275 - 25 = 250 Pa).

With 3000 cfm (5097 m3/h) and 1.00 inches (250 Pa), Table PD-29 shows a 1.17 bhp (0.8 kW).

Note:The formula below the table can be used to calculate Fan Motor Heat,

3.5x Bhp = MBh

3.5x 1.17 = 4.10 MBh

(1.375 x (kW) = kW)

(1.375 x 0.8 = 1.1 kW)

NetTotal Cooling Capacity =

86.5MBh – 4.10 = 82.4 MBh

18.8- 1.1 = 17.7 kW

Net Sensible Cooling Capacity =

64.4MBh – 4.10 = 60.3 MBh

25.3- 1.1 = 24.2 kW

Heating Capacity

Step 1 — Calculate the building heating load.

Step 2 — Size the system heating capacity to match the calculated building heating load.The following are building heating requirements:

a

Total Heating Load at 97.0 MBh (28.4 kW) b

3000 cfm (5097 m3/h) c

Electric Supplementary Heaters

Table PD-39, the 34.88 kW heater has a capacity of 119,045 btu. FromTable ED-5, the 34.88 kW indicates the heater model number is BAYHTRL435A.This heater will adequately cover the building’s heating requirement.

Air Delivery Selection

External static pressure drop through the air distribution system has been calculated to be 0.77 inches (192.5 Pa) of water gauge. FromTable PD-38 static pressure drop through the electric heater is 0.23 inches (57.5 Pa) of water (0.77 + 0.23 = 1.00 in.) (192.5 + 57.5 = 250 Pa). EnterTable 39-1 forTWE075AD at 3000 cfm (5097 m3/h) and 1.00 static pressure (250 Pa).The standard motor at 821 rpm will give the desired airflow.

SS-PRC003-EN

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Contents Split System Cooling Units Designing the Details Manufacturing ControlStandardized Cabinets FiltersContents Condensing Unit Options Features and BenefitsLow Ambient Cooling Operation Air Handlers Offer More FlexibilityOdyssey Lowers Installation Costs Micro Controls ReliaTel MicroElectromechanical Controls QualityAnd ReliabilityTesting We test designs at our factory not on our customersVariTrac Blower Rotation Clearance RequirementsLow Ambient Cooling Typical HorizontalAir Handler ApplicationCooling Capacity Selection ProcedureHeating Capacity Air Delivery SelectionModel Number Description Split System Condensing Unit Model NomenclatureAir Handler Model Nomenclature Table GD-1 General Data General DataTable GD-2- General Data Table GD-4 General Data Table GD-3 General DataDataSystem PerformanceTGC SHC SHC TGC SHC TGC SHC TTA075A Condensing Unit withTWE100AAir HandlerDataSystem TTA085A Condensing Unit withTWE100AAir Handler DataSystem TTA100B Condensing Unit withTWE100BAir Handler DataSystem DataSystem TTA125B Condensing Unit withTWE100B Air Handler TTA125B Condensing Unit withTWE155B Air Handler TTA155B Condensing Unit withTWE155B Air Handler DataSystem DataSystem DataSystem TTA200B Condensing Unit with TWE200B Air Handler Enter Bulb Entering Wet Bulb Temperature C M3/h AirflowPerformance Data TTA075A Condensing Unit Only I-PTable PD-17- Cooling Performance MBh Table PD-18 Cooling Performance kW TTA085A Condensing Unit Only SITTA100A Condensing Unit Only SI TTA100A Condensing Unit Only I-PTable PD-19 Cooling Performance MBh Table PD-19 Cooling Performance kWTable PD-20 Cooling Performance kW TTA100B Condensing Unit Only SICap. Btuh/1000 90.8 Cap. Btuh/1000 95.7Cap. Btuh/1000 85.9 94.9 105 Cap. Btuh/1000 80.9 89.5 98.573.7 80.1 OD Unit KW Head press Psig OD Unit Power kW Head pressure kPA 1926Cap. Btuh/1000 48.9 54.0 59.3 64.9 70.8 Cap. Btuh/1000 46.5TTA125B Condensing Unit Only SI TTA125B Condensing Unit Only I-PTable PD-23 Cooling Performance MBh Table PD-23 Cooling Performance kWTable PD-24 Cooling Performance MBh TTA155B Condensing Unit Only I-P56.0 60.8 65.9 OD Unit Power kW ODTemp Suction ReferenceTemperature F Head press. Psig45.2 49.5 54.0 58.6 63.4 OD Unit Power kW 56.1 60.5 OD Unit Power kW79.5 23.7 26.0 28.4 30.8 OD Unit Power kW Head pressure kPA 172196.8 OD Unit KW Head press. Psig66.2 72.0 78.1 84.4 OD Unit Power kW 63.6 69.5 75.6 82.0 88.6 OD Unit Power kW80.1 OD Unit Power kW 59.3 64.6 70.1 75.9 OD Unit Power kWPerformance Data Table PD-29- Evaporator Fan Performance TWE050A I-P Table PD-29- Evaporator Fan Performance TWE050A SITable PD-30- Blower Speeds TWE050A Table PD-29 Table PD-31- Evaporator Fan Performance TWE075A I-PTable PD-31 Evaporator Fan Performance TWE075A SI Table PD-32 Blower Speeds TWE075ATable PD-33 Evaporator Fan Performance TWE100A, TWE100B I-P Table PD-33Table PD-34 Blower Speeds TWE100A, TWE100B Table PD-35 Evaporator Fan Performance TWE155B SI Table PD-35 Evaporator Fan Performance TWE155B I-PTable PD-36- Blower Speeds TWE155B Motor SheaveTurns Open Drive StandardTable PD-37- Evaporator Fan Performance TWE200B,E SI Table PD-37 Evaporator Fan Performance TWE200B,E I-PTable PD-37 Table PD-38- Blower Speeds TWE200B,EModel No UnitStraight 1400 TWE050 1800Table PD-41 Auxiliary Electric Heat Capacity Air Handler Table ED-3 Electrical Characteristics Motors Air Handler Table ED-1 Unit Wiring Condensing UnitsTable ED-4 Unit Wiring Air Handler Electrical DataHeater Electric Heat DataMinimum Maximum Model No With UnitTTA050/TWE050A Jobsite ConnectionsTTA075A/TWE075A TTA085/TWE075A TTA085/TWE100A 2TTA075A/TWE155BAir Handler Typical WiringAir Handler Condensing Unit Single Compressor Typical Wiring Condensing Unit Dual Compressor Typical Wiring Figure DD-1 TTA075 Condensing Units Dimensional DataFigure DD-2 TTA085A and 100A Condensing Units Figure DD-3 TTA100C Condensing Units Figure DD-4 TTA100B and TTA125B Condensing Units Figure DD- 5- TTA155B Condensing Unit Figure DD-6 TTA155C Condensing Units Figure DD-7 TTA200B Condensing Unit Figure DD-8 TTA200F Condensing Unit Table DD-1 Table DD-1 Air Handler Dimensions in. mm19-1/2 15-7/8 203.20 495.30 660.40 403.23Table DD-2 Table DD-2 Air Handler Dimensions in. mmTWE100A, 100B Table DD-3 Air Handler Dimensions in. mmFigure DD-12- TWE155B and 200B Air Handlers Table DD-4 Table DD-4- Air Handler Dimensions in. mm51 7/8 59 1/8 71 7/8 92 5/8 30 1/220 7/8 89 1/4 1826 2353 77518 1/8 Figure DD-16 Electric Heater for TWE155 and 200 Air HandlersTable DD-6 Discharge Plenum Grille Dimensions in. mm Weights Table W-1 Unit and Corner Weights Net Lbs kgTableW-2 AccessoryWeights Net Lbs kg Table W-3 Air Handlers and Corner Weights lb1 kg Table W-4 Accessory Weights Net Lbs kgVertical TWE050, 075 TWE155 General MechanicalCasing Refrigeration System Dual Manifolded CompressorsZone Sensor ControlsThermostat LowAmbient OperationAccessories Mechanical SpecificationsEvaporator Coil Evaporator FanFile No PL-UN-SS-PRC003-EN-0606 Literature Order NumberSupersedes PL-UN-SS-PRC003-EN-0104 Stocking Location Electronic Only

SS-PRC003-EN specifications

The Trane SS-PRC003-EN is a high-efficiency commercial HVAC solution designed to cater to a wide variety of industrial applications. Known for its robust engineering and innovative design, this unit provides reliable climate control, ensuring optimal indoor environments in commercial spaces, manufacturing plants, and large facilities.

One of the standout features of the SS-PRC003-EN is its advanced inverter technology. This variable-speed compressor allows for precise cooling and heating adjustments based on real-time demand, which not only enhances system efficiency but also significantly reduces energy consumption. This capability not only minimizes operational costs but also contributes to a more sustainable energy profile, aligning with growing environmental concerns.

Another notable characteristic is its user-friendly control system. The unit is equipped with intuitive interfaces that allow facility managers to monitor and adjust settings remotely. This functionality ensures optimal performance, facilitates maintenance, and offers diagnostics that help identify potential issues before they lead to system failure.

Moreover, the SS-PRC003-EN features a built-in air filtration system that improves indoor air quality. It effectively removes dust, pollutants, and allergens from the air, contributing to healthier environments for occupants. This is particularly critical in commercial settings where many individuals congregate, ensuring compliance with health and safety regulations.

The design also emphasizes noise reduction technology. The unit operates at whisper-quiet levels, minimizing disruption in work environments and enhancing comfort for occupants. This is achieved through a combination of sound-absorbing materials and engineered airflow paths.

Additionally, the Trane SS-PRC003-EN is constructed with durability in mind. It resists corrosion, withstands harsh environmental conditions, and maintains performance longevity, making it a reliable choice for facilities that require constant operation.

With its combination of efficiency, advanced technology, user-friendly controls, and superior air quality management, the Trane SS-PRC003-EN stands out as a market leader in commercial HVAC systems. It offers businesses the performance they need while also promoting energy savings and environmental stewardship, making it an invaluable addition to any commercial infrastructure.
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