Carrier manual 40RUA and 40RUQ only, Label, TXV Adjustment

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START-UP

Before starting unit, check the following and correct as necessary:

S Is unit solidly supported?

S Is fan adjusted for speed and pulley alignment?

S Are pulleys, motor, and bearings securely mounted? S Are there any loose parts that will rattle or vibrate? S Is condensate drain pan pitched for correct drainage?

S Are coil baffle plates tight against coil to prevent air bypass?

S Are all panels securely fastened?

S Are all electrical connections correct and tight?

40RUA and 40RUQ ONLY —

S Is TXV bulb located on suction tube per Fig. 21?

S Is the capillary tube to the bulb free of kinks and not subject to pinching?

S Is the bulb well secured to the suction tube with strap?

Also refer to condensing unit or outdoor heat pump section instructions before starting a split system. A split system start-up checklist is provided at the end of these instructions.

40RU500072 2.0

IMPORTANT! / IMPORTANT

 

TXV

 

EQUALIZER LINE

 

 

CONDUITE D'ÉQUILIBRAGE

UPPER SPLIT

SENSING

 

SIGHT GLASS

BULB

 

BLOC SUPÉRIEUR

 

CAPTEUR TXV

HUBLOT

 

AIR FLOW

 

 

TXV

CIRCULATION

 

 

 

 

 

D'AIR

15 DIAMS MIN

10 DIAMS

 

 

15 x DIA. MIN

10 x DIA. MIN

SOLENOID

 

 

8 DIAMS MIN

VALVE

 

 

8 x DIA. MIN

VANNE

 

 

 

LOWER

 

 

SOLÉNOÏDE

 

 

FILTER

SPLIT

 

 

BLOC

TXV SENSING

DRIER

INFÉRIEUR

FILTRE

BULB

 

DESSICCATEUR

 

 

 

CAPTEUR TXV

 

AIR FLOW

 

 

TXV

CIRCULATION

 

 

 

D'AIR

15 DIAMS MIN

10 DIAMS

EQUALIZER LINE

 

15 x DIA. MIN

10 x DIA. MIN

CONDUITE D'ÉQUILIBRAGE

 

 

8 DIAMS MIN

INDOOR COIL

 

 

8 x DIA. MIN

 

 

 

ÉCHANGEUR INTÉRIEUR

The sensor bulb capillary tubes must be routed from the TXVs inside the unit through one of the piping access holes. Clamp the TXV sensor bulb on a vertical portion of the suction line, outside the unit. See Fig. 7 in the installation, start-up and service instruction. Super heat must be adjusted in field.

Les tubes capillaires du capteur doivent être acheminé à partir du détendeur thermostatique situé à l'intérieur de l'appareil au travers de l'un des trous d'accès de conduites. Attacher le capteur sur une portion verticale de la conduite de succion, à l'extérieur de l'appareil. Voir la Figure 7 dans le manuel d'installation, de mise en marche, et d'entretien. La surchauffe doit être ajustée sur place.

C10827

Fig. 21 - Label, TXV Bulb Location

Adjusting TXV for Superheat (40RUA and 40 RUQ only) —

The unit-mounted thermostatic expansion valve(s) is/are factory set to provided superheat at the bulb location in 10_F to 15_F (5.5_C to 8.3_C) range. Actual system load conditions may require adjustment of the factory setting. To adjust the TXV superheat setting:

1.Remove the seal cap from the bottom of the TXV body.

2.To increase superheat, turn the stem clockwise. To de- crease the superheat, turn the stem counterclockwise. Do not turn the stem more than one full turn.

3.Wait until suction pressure and superheat stabilize. This may take more than 30 minutes.

4.Continue adjustment until superheat reaches 10_F to 15_F (5.5_C to 8.3_C).

5.Replace the seal cap; tighten.

INSTALLER / INSTALLATEUR

TXV superheat must be checked at initial unit start-up and adjusted if necessary. Superheat must be 10 - 15 deg F.

La surchauffe TXV doit être vérifiée au moment de la mise en route initiale et ajustée si nécessaire. La surchauffe doit être comprise entre 10 et 15 degrés F.

40RU500073 2.0

C10828

Fig. 22 - Label, TXV Adjustment

SERVICE

Inspection and maintenance should be performed at regular intervals and should include the following:

S Complete cleaning of cabinet, fan wheel, cooling coil, condensate pan and drain, heating coils, and return-air grille (if present).

S Inspection of panels and sealing of unit against air leakage.

S Adjustment of fan motor, belt, bearings, and wheels. S Cleaning or replacement of filters.

S Testing for cooling/heating system leaks. S Checking of all electrical connections.

!WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury or death.

Before performing service or maintenance operations on unit, always turn off main power switch to unit and install lockout tag. Unit may have more than one power switch.

Most unit service can be performed by removing one or both of the unit’s side panels. Coil cleaning or removal or insulation cleaning may require removal of a rear, top, or bottom panel, depending on the unit’s orientation. When service is completed, replace unit panels.

Panels - Panels are fastened to unit frame with sheet metal screws. Fan and coil compartment must be sealed tightly after service to prevent air from bypassing the cooling coil.

40RU

23

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Contents Installation, Start---Up Service Instructions PRE-INSTALLATION 40RUA Physical Data, English Cooling Units 40RUA Physical Data, SI Cooling Units Unit 40RUQ 40RUQ Physical Data, English Heat Pump Units138 40RUA Physical Data, SI Heat Pump UnitsOperating charge kg Fins/m 591Chilled Water Coil 40RUS Physical Data, English Chilled Water UnitsUnit 40RUS Max Working Pressure kPag at 125 C Operating Weight kg Base Unit40RUS Physical Data, SI Chilled Water Units Face Area sq m Upper Face Area sq m Lower Rows...Fins/m40RUS*25 Unit Unit Weight40RUA*25 40RUQ*2540RUA*28 1050 40RUA*30 1062 40RUS*28 1035 40RUS*30 1042 Dimensions Sizes 28U a a 2 5 a 1 a 6 0 a 0 a Preferred Suspension Technique Refrigerant and Chilled Water Piping Access Holes Face-Split Coil Suction and Liquid Line Piping Typical Feeder Tubes PER Distributor Factory-Installed Nozzle and Distributor DataFitting Requirements Unit Coil Type TXV Distributor STD40RUA*28 Fitting RequirementTypical 40RUS Chilled Water Piping Condensate Drains Fire Hazard Electrical Data, Alternate Motors Electrical Data, Standard Motors25, 28 Unit Voltage Maximum40RU Holding VATypical Fan Discharge Connections for Multiple Fan Units 40RUA and 40RUQ only Label, TXV AdjustmentManufacturer Lubricant Lubricant DataFan Pulley Alignment Align as follows Fan RotationRemove Filter Retainer Clip Fan Motor Data, Alternate Motor English Fan Motor Data, Standard Motor EnglishFan Motor Data, Alternate Motor SI Fan Motor Data, Standard Motor SIFAN Drive Standard Drive Data, 60 Hz EnglishMedium-Static Drive Data, 60 Hz English Motor DriveStandard Drive Data, 60 Hz SI High-Static Drive Data, 60 Hz EnglishHigh-Static Drive Data, 60 Hz SI Medium-Static Drive Data, 60 Hz SIUnit External Static Pressure kPa 000 542 577 1042 646 716 785 849 907 2830 10.77 11.94 13.08 1087 14.15 15.12 Unit Airflow Pressure Drop FACTORY-SUPPLIED Pressure Drop English40RU Catalog No 40RU---07SI 40RUA, 40RUQ START-UP ChecklistComp A1 Comp B1 Check Voltage Imbalance

40RU specifications

The Carrier 40RU is a highly regarded solution in the realm of commercial cooling systems, specifically designed for applications requiring reliable, long-lasting climate control. This unit stands out due to its engineering excellence, innovative features, and efficient operation.

One of the primary attributes of the Carrier 40RU is its robust construction. Engineered to withstand varying environmental conditions, this unit is built with high-quality materials that promote durability and longevity. The design incorporates corrosion-resistant finishes, which enhances its resilience, especially in outdoor installations.

The Carrier 40RU is equipped with advanced cooling technologies, including variable speed compressors and innovative coil designs. These technologies contribute to its exceptional energy efficiency, allowing the unit to optimize performance while minimizing energy consumption. The variable speed compressors adjust their output based on the current cooling demand, which not only saves energy but also reduces wear and tear on the equipment.

Additionally, the system features a sophisticated control platform that allows for ease of operation and monitoring. This control system offers numerous settings and modes, enabling users to customize their cooling experience based on specific needs. Integration with smart building systems is also possible, providing even greater flexibility and energy management capabilities.

The 40RU model includes a comprehensive filtration system that enhances indoor air quality by effectively capturing dust, allergens, and other particulates. This feature is essential for commercial spaces where maintaining a clean and healthy environment is paramount.

In terms of performance metrics, the Carrier 40RU offers impressive cooling capacities suitable for various applications, from small offices to large commercial buildings. Its noise levels are also minimized through the application of advanced acoustic insulation, ensuring a comfortable environment for occupants.

Moreover, the Carrier 40RU is designed with ease of maintenance in mind. Regular service points are readily accessible, allowing technicians to perform routine checks and repairs efficiently. This design consideration is crucial for minimizing downtime and ensuring the system operates optimally.

In summary, the Carrier 40RU combines rugged construction, energy-efficient technologies, advanced controls, and superior filtration to deliver an outstanding cooling solution for commercial applications. Its versatility, coupled with robust performance characteristics, makes it a preferred choice among HVAC professionals and building managers alike. Whether for new installations or upgrades, the 40RU ensures reliability and comfort in any environment.