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40UV-UH-14SI

Product catalog summary

Safety Considerations: The document highlights the critical importance of adhering to installation and maintenance instructions to ensure safe and efficient operation. Hazards are categorized into four levels: Danger, Warning, Caution, and Important, indicating the severity of potential risks. Special caution is advised when handling refrigerants like R-410A, which should only be managed by certified professionals.

Introduction: This section provides an overview of the installation instructions for 40UV and UH unit ventilators, recommending consultation of specific manufacturer literature for factory-mounted controls and adherence to NEC and local codes for electrical connections.

Pre-Installation: Units should be inspected upon arrival for damage and verified against the product order. The document stresses the importance of qualified personnel performing installation and service tasks and warns against leaving units filled with water in unheated buildings without antifreeze.

Installation: The installation process includes steps such as positioning units, making piping and electrical connections, and ensuring proper insulation. Specific instructions are provided for different types of coils and piping packages.

Pre-Start-Up and Start-Up: Pre-start checks ensure all systems are ready for operation. The start-up process includes specific instructions for DX cooling models and general guidelines for all models.

Operation and Controls: The document outlines optional features like freeze stats and air dampers, detailing control mechanisms for various heating and cooling configurations.

Service and Maintenance: Regular maintenance is crucial for optimal performance. The document provides a maintenance schedule and emphasizes using factory-approved replacement parts to avoid risks.

Replacement Parts: Guidance is provided on sourcing and using appropriate replacement parts to maintain unit integrity and safety.

Specifications: The document provides detailed specifications and installation instructions for ceiling-mounted air handling units, specifically models 40UV and 40UH, including dimensions, airflow capacities, and piping connections for chilled and hot water coils, as well as direct expansion (DX) coils.

Piping Connections: Instructions for units without a piping package include installing shut-off valves, circuit setters, and drain valves. Recommendations for using pipe line strainers and securing the piping system are provided.

Direct Expansion (DX) Coils: R-410A is the approved refrigerant, and installation should follow good refrigeration practices, with specific instructions for suction and liquid line connections. Caution is advised regarding the handling of R-410A refrigerant, and refrigerant charging should be performed by certified professionals.

Tables and Figures: Tables provide detailed dimensions for piping locations for various coil configurations, including chilled water, hot water, and DX coils. Figures illustrate typical piping installations and coil configurations, aiding in visualizing the setup and connections.

Critical Notes: Units are not approved for potable water systems. Hot water temperature and pressure limits are specified (200°F and 125 psig). Components exposed to water must be replaced if wet.

Steam Coils Specifications: Steam coils are factory-supplied with 1-inch NPT connections. A steam trap must be installed to handle at least twice the normal condensate at minimum differential pressure. Steam pressure should not exceed 10 psig (68.9 kPa) to prevent excessive discharge air temperatures.

Piping and Insulation: Chilled water and condensate pipes should be insulated to prevent condensation damage. Hot water pipes require insulation to minimize heat loss. Piping packages are not available for ceiling-mounted units.

Electrical Connections: Ensure all wiring complies with local codes or the National Electric Code ANSI/NFPA 70. Wiring must be done according to the provided wiring diagram, using copper wire with a temperature rating of at least 105°C. Control wiring should be separated to avoid interference.

Pre-Start-Up Checks: Verify supply voltage matches the unit's requirements. Ensure all components are secure and undamaged. Check for water leaks and ensure the system is flushed correctly.

Start-Up Procedures: Follow specific start-up procedures for DX cooling models. Ensure blower motor rotation is correct and all valves are open. Record operational data for start-up sheets.

Operation and Controls: The supply fan operates continuously in occupied mode and adjusts speed via a manual 3-speed switch. Optional freeze stat and damper controls are available for temperature regulation and economizer functions. Chilled water systems can use valve or face and bypass control for temperature management.

Cooling and Heating Control Systems: The document outlines the operation of cooling and heating systems, focusing on compressor and valve controls. The compressor activates when room temperature exceeds the cooling setpoint and deactivates when it falls below. For systems with hot water or steam coils, valve controls are used, which are modulated by a proportional signal or a tri-state signal. Face and bypass control systems regulate air flow through heating coils based on temperature deviations from the setpoint.

2-Pipe Systems: These systems use a single water coil for both heating and cooling, controlled by modulating valves or face and bypass dampers. The control is based on room temperature relative to the setpoint.

Optional Controls: Optional 2-position control valves manage end-of-cycle flow for water coils. Condensate pumps and float switches are optional features that manage water levels and can disable the system if necessary.

Service and Maintenance: Regular maintenance is crucial for longevity and performance. Monthly checks include filter replacement, while biannual checks involve inspecting electrical circuits, control wiring, and sensors. The document emphasizes safety precautions, such as disconnecting power before servicing and using factory-approved parts.

Warnings and Cautions: Warnings highlight the dangers of electrical shock and the need for qualified technicians to handle R-410A refrigerant due to its high pressure. Cautions advise against reusing wet components and warn of hot parts during servicing.

Troubleshooting: A troubleshooting table provides solutions for common issues like unit non-operation, mechanical failures, and sensor faults. It includes steps for addressing power issues, control wiring problems, and refrigerant pressure anomalies.

Replacement Parts: When replacing parts, it is essential to use the correct model and serial numbers to ensure compatibility.

Troubleshooting and Maintenance Overview:

Loose Wiring Connections: Begin inspection at the valve output from the microprocessor. Ensure a 24V supply is present at the actuator.
Faulty Heating Actuator: Replace the actuator if found faulty.
Isolation Valves: Confirm that isolation valves are open and check for any additional external isolation valves.
DC Control Signal: Verify the presence of a 2-10VDC signal from the microprocessor.
Electrical and Mechanical Specifications: Condensate Pump: Ensure clearance to combustible materials and check maximum external static pressure. Steam Coil: Verify maximum temperature and pressure ratings. Electric Heat: Optional items include specific kW ratings. Hot Water Coil: Check model and serial numbers for reference.
Wiring Diagram: Includes specifications for supply fan motor and electrical ratings.
Manufacturer's Notice: Specifications or designs may change without notice.
Unit Ventilator Start-Up Checklist: Verify electrical service matches unit nameplate. Ensure all electrical connections are tight and field wiring conforms to the unit wiring diagram. Confirm unit installation per IOM guidelines. Check condensate disposal system and slope of the drain pan. Verify tightness of end bearing bolts on the fan shaft and proper operation of dampers. Ensure the filter is clean and the expansion valve bulb is properly installed and insulated.
Piping Checklist: Confirm correct installation and insulation of unit piping to prevent condensation. Verify control valve packages are piped and insulated correctly. Check for any leaks.
Controls Checklist: Confirm the presence of Carrier controls and operation per the sequence outlined in the controller IOM. Record thermostat readings for space temperature, discharge air temperature, outdoor air temperature, and damper positions.
Safety Note: Follow safe practices and adhere to safety considerations to avoid injury and equipment damage.

Catalog excerpts

40UV,UH Floor and Ceiling Mounted Unit Ventilators Installation, Start-Up and Service Instructions Part No. 5H1060560000 CONTENTS Page SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 PRE-INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Unpack and Inspect Units . . . . . . . . . . . . . . . . . . . . . 4 Protect Units from Damage . . . . . . . . . . . . . . . . . . . . 5 Prepare Jobsite for Unit Installation . . . . . . . . . . . . . 5 Identify and Prepare Units . . . . . . . . . . . . . . . . . . . . . 5 Drainage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Step 1 — Place Units in Position . . . . . . . . . . . . . . . . 7 • FLOOR MOUNTED UNITS • CEILING MOUNTED UNITS Step 2 — Make Piping Connections . . . . . . . . . . . . 12 • CHILLED/HOT WATER COILS (NO PIPING PACKAGE) • CHILLED/HOT WATER COILS (PIPING PACKAGE) • DIRECT EXPANSION (DX) COILS (NO PIPING PACKAGE) • DIRECT EXPANSION (DX) COILS (PIPING PACKAGE) • STEAM COILS (NO PIPING PACKAGE) • STEAM COILS (PIPING PACKAGE) Piping Insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 • STANDARD UNITS Step 3 — Make Electrical Connections . . . . . . . . . . 18 • WIRING • TERMINAL STRIP CONNECTIONS PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Pre-start Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 • DX COOLING MODELS ONLY: • ALL MODELS: • DX COOLING MODELS ONLY: OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Freeze Stat (Optional) . . . . . . . . . . . . . . . . . . . . . . . . 21 Outside Air and Return Air Dampers (Optional) . . 21 CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Chilled Water with Valve Control . . . . . . . . . . . . . . . 21 Chilled Water with Face and Bypass Control . . . . . 21 Direct Expansion (DX) Cooling Control . . . . . . . . . 21 Hot Water or Steam with Valve Control . . . . . . . . . 21 Hot Water with Face and Bypass Control . . . . . . . . 21 Hot Water and Chilled Water (2-Pipe) with Valve Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Hot Water and Chilled Water (2-Pipe) with Face and Bypass Control . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 2-Position Control Valves . . . . . . . . . . . . . . . . . . . . .21 Condensate Pump (Optional) . . . . . . . . . . . . . . . . . .21 Condensate Pan Float Switch (Optional) . . . . . . . .21 SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22 Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22 Maintenance Schedule . . . . . . . . . . . . . . . . . . . . . . .24 REPLACEMENT PARTS . . . . . . . . . . . . . . . . . . . . . .27 UNIT START-UP CHECKLIST. . . . . . . . . . . . . . . . . CL-1 SAFETY CONSIDERATIONS The installation and maintenance instructions in this manual must be followed to provide safe, efficient, and trouble-free operation. In addition, particular care must be exercised regarding the special precautions listed below. Failure to properly address these critical areas could result in property damage or loss, personal injury, or death. These instructions are subject to any more restrictive local or national codes. HAZARD INTENSITY LEVELS DANGER: Indicates an imminently hazardous situation which, if not avoided, WILL result in death or serious injury. WARNING: Indicates a potentially hazardous situation which, if not avoided, COULD result in death or serious injury. CAUTION: Indicates a potentially hazardous situation which, if not avoided, MAY result in minor or moderate injury. IMPORTANT: Indicates a situation which, if not avoided, MAY result in a potential safety concern. PRÉCAUTIONS PARTICULIÈRES Les instructions d'installation et d'entretien de ce manuel doivent être suivies pour assurer un fonctionnement sûr, efficace et sans problème. De plus, une attention particulière doit être portée aux précautions particulières énumérées ci-dessous. Le fait de ne pas traiter correctement ces zones critiques pourrait entraîner des dommages matériels ou des pertes, des blessures corporelles, voire la mort. Ces instructions sont soumises à des codes locaux ou nationaux plus restrictifs. HIÉRARCHIE DES NIVEAUX DE RISQUES DANGER: Indique un danger imminent qui, s'il n'est pas évité, entraînera INÉVITABLEMENT des blessures graves, voire mortelles. AVERTISSEMENT: Indique un danger potentiel qui, s'il n'est pas évité, RISQUE d'entraîner des blessures graves, voire mortelles. ATTENTION: Indique un danger potentiel qui, s'il n'est pas évité, PEUT entraîner des blessures mineures ou modérées. IMPORTANT: Indique une situation qui, si elle se matérialise, PEUT entraîner des risques pour la sécurité des personnes. Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53400088-01 Prin

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IMPORTANT: The use of this manual is specifically intended for a qualified installation and service agency. A qualified installation and service agency must perform all installation and service of these appliances. Units with DX evaporator coils contain the refrigerant R-410A. Review the R-410A Material Safety Data Sheet (MSDS) for hazards and first aid measures. Refrigerant charging should only be carried out by an EPA-certified air conditioning contractor. AVERTISSEMENT Une installation, un réglage, une altération, une réparation ou une maintenance impropre risque de causer des dommages, des...

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40UV-UH-14SI

40UV-UH-14SI

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