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General| Brand | York |
|---|---|
| Model | CURBPAK CP23 |
| Category | Air Handlers |
| Language | English |
Explanation of symbols used to alert readers to potential hazards like danger, caution, and notes.
Manual's purpose, YORK's quality product, and user responsibility for safety compliance.
Overview of the YORK CurbPak's design for outdoor rooftop applications and its weatherproof features.
Steps to check and report shortages of non-mounted parts included in the shipment.
Essential safety practices for operating the unit, including rigging, electrical safety, and general precautions.
Guidelines for selecting a structurally sound installation site, considering deflection and proximity to support.
Information on acceptable roof pitch for installation and requirements for pitched roofs.
Details on curb shipment, assembly, installation, and the importance of level and square mounting.
Step-by-step instructions for assembling split sections of the unit before setting it in place.
Details on fan isolation, including rubber-in-shear, spring, and seismic isolators, and their preparation.
Recommendations for connecting intake and discharge air ducts, emphasizing flexibility and proper installation.
Guidance on routing piping through the unit's pipe chase and insulation installation.
Advice on consulting specifications for coil piping, ensuring unit levelness for venting and draining.
Connection instructions for water coils, ensuring counterflow and freeze protection measures.
Installation requirements for DX coils, including distributor orientation, expansion devices, and frost prevention.
Explanation of negative static pressure issues in drain pans and the necessity of traps for condensate removal.
Installation guidelines for trapped condensate drain lines, including "H" dimension and negative pressure considerations.
Instructions for handling and installing loose filters in filter frames before unit operation.
Overview of damper combinations for airflow control and their operation with actuators.
Information on variable inlet vane availability, installation, and their impact on performance.
Requirements for wiring to conform to National Electrical Code (N.E.C.) and local codes.
Information on VAV applications using YORK Air-Modulator (VFD) and variable inlet vanes.
Comprehensive checklist of items to verify before starting the unit for the first time.
Detailed steps for pre-operational checks, including electrical lockout, internal inspection, and rotating parts.
Classification of units based on static pressure packages (Low, Medium, High) and cabinet construction.
Caution against operating fan motors in an overload amperage condition and checking motor amperage.
Checking belt tension at startup and after 24 hours, and ensuring proper belt travel on adjustable pulleys.
Ensuring motor and fan pulleys are locked and aligned before operation to prevent damage.
Detailed explanation of adjusting and locking variable pitch sheaves for optimal performance.
Importance of planned maintenance for unit longevity and owner responsibility.
Routine checks for filters, dampers, and lubrication of fan bearings.
Procedure for lubricating fan bearings, including proper grease type and technique.
Recommendations for motor bearing lubrication, including grease type and equivalent greases.
How to adjust belt tension correctly and the consequences of improper tension.
Inspection and lubrication of variable inlet vane bearings with SAE 30 oil.
Control requirements for humidifiers and inspection of strainer screens and steam traps.
Procedure for replacing belts, emphasizing replacement as a set and checking sheave alignment.
Using a belt tension gauge and referring to unit labels for correct belt tension data.
General guidance on handling fan shaft bearings, cleaning, and ensuring shaft condition.
Steps for installing bearings, including checking shaft straightness and using proper tools.
Detailed procedure for installing and locking eccentric self-locking collars on bearings.
Measures to prevent coil freezing, including antifreeze circulation and control settings.
Procedure for preventing condensate drain traps from freezing during winter shutdown.
Information on aluminized steel frames for high-temperature applications and gasket ratings.
Description of AAF filter latches, their types, and features for filter retention and sealing.
Warning about excessive clamping pressure fracturing gasket material, leading to leakage.
Description of AAF Visual Control clamps for HEPA filters, their application, and easy installation.
Overview of HVAC air systems and the importance of pressure measurement for troubleshooting.
Description of the Pitot tube's construction and its use with manometers for pressure measurement.
Advantages of the Magnehelic gauge over liquid manometers for pressure measurement.
Explanation of pressure measurement using U-tube manometers and fluid columns.
Explanation of static pressure in air systems, positive/negative values, and ductwork influences.
Troubleshooting steps for high airflow, including checking unit access doors and system balancing.
Troubleshooting steps for high motor current draw, including voltage and connection checks.
Troubleshooting unbalanced current draw due to power supply or motor issues.
Troubleshooting for motors running hot, including blocked ventilation and ambient temperature.
Troubleshooting steps for motors that will not start, including single phase conditions and locked rotors.
Troubleshooting noisy motor operation under load, including bearing damage and single phasing.
Troubleshooting low motor speed, including low voltage and inaccurate RPM measurements.
Troubleshooting excessive motor vibration, including loose mounting and unbalanced loads.
Diagnosing noisy bearings, including high whine, low rumble, and rough clatter.
Troubleshooting electric heat issues, including tripped thermal cutouts and broken elements.
Troubleshooting hot water or steam heat issues, including valve actuators and control linkage.
Troubleshooting water carry-over, including high airflow and drain pan issues.
Troubleshooting water inside the unit, including sealed field penetrations and reassembly joints.
Ensuring proper drain pan installation, levelness, and pressure conditions.
Checking pre-filters for wetness, proper hood installation, and airflow limits.
Troubleshooting steps for the AirMod not operating, including verifying wiring and control signals.
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