York AE SERIES - User Manual

This document is an installation manual for Standard ECM Single Piece Multi-Position Air Handlers, specifically the AE Series models. It provides comprehensive instructions for installation, technical specifications, usage, and maintenance.

Function Description

The AE Series air handlers are designed for residential heating and cooling applications, offering flexibility for installation in various positions: upflow, downflow, horizontal right, or horizontal left. These units can be located in closets, utility rooms, attics, crawl spaces, or basements and are compatible with cooling-only or heat pump operations, with or without electric heat. The ECM (Electronically Commutated Motor) blower provides efficient airflow. The units are designed to integrate with duct systems for conditioned air distribution.

Important Technical Specifications

Installation Flexibility: Multi-positional (upflow, downflow, horizontal right/left).
Compatibility: Suitable for cooling-only or heat pump systems, with or without electric heat.
Electric Heat Kits: Available as field-installed accessories.
- Single-phase kits: 2.5 kW to 25 kW.
- Three-phase kits (208-230V): 10 kW to 25 kW.
Power and Control Wiring: Top or side entry for power and control wiring, with color-coded leads for ease of installation.
Voltage Range: Normal operating voltage range is 187V-253V for 208V-230V-1-60 models, rated in accordance with ARI Standard 110, utilization range "A".
Airflow: Must be within minimum and maximum limits approved for electric heat, indoor coils, and outdoor units.
Entering Air Temperature Limits:
- Wet Bulb Temp.: Min. 57°F, Max. 72°F.
- Dry Bulb Temp.: Min. 65°F, Max. 95°F.
Coil Metering Devices: Requires field installation of either a piston or a TXV (Thermostatic Expansion Valve).
Refrigerant Lines: Copper-to-copper connections, brazed with phosphorous-copper alloy material (e.g., Silfos-5).
Condensate Drains: Primary and secondary drain lines must be trapped (minimum three inches) and pitched away from the unit. Connections are designed for ASTM Standard D 2466 Schedule 40, using 3/4" PVC or steel threaded pipe. Sealants (Teflon™ tape, pipe thread compound) are not to be used.
Duct Work: Designed for zero clearance to combustible materials. Duct work must be sized correctly and installed in accordance with local and national codes (e.g., NFPA No. 90B, ACCA – Manual D). Flexible duct connectors are recommended to minimize vibration/noise.
Air Filters: Requires field-supplied return air filters (1" standard size, permanent or throw-away). Integral filter rack for 1" filters is built into the unit.
Blower Motor: Standard ECM motor with 5-speed taps. Factory wired to tap 5 for heating (electric heat kit) and tap 4 for cooling/heat pump.
Low Voltage Control: 24 VAC power supply from an internally wired transformer.
Physical Dimensions: (Refer to Table 1 for specific models)
- Heights: 41" to 55-1/2".
- Widths: 17-1/2" to 24-1/2".
- Depths: 12-7/8" to 26-7/8".
Blower Diameter x Width: 10x8 or 11x10 (refer to Table 2).
Motor HP: 1/3 HP to 3/4 HP (refer to Table 2).
Nominal RPM: 1050 (refer to Table 2).
Full Load Amps @230V: 2.6 to 5.4 (refer to Table 2).
Minimum Circuit Ampacity (MCA) and Maximum Overcurrent Protection (MOP): Specific values vary by model, heater kit, and voltage (refer to Tables 7, 8, 9, 10). MOP devices must be HACR type circuit breakers or time delay fuses.
Air Flow Data (CFM): Varies by model, motor speed, and external static pressure (refer to Table 11). Recommended external static pressures are 0.2" to 0.5" wc.

Usage Features

Flexible Installation: Can be installed in various orientations (upflow, downflow, horizontal right/left) to suit different building layouts.
Easy Conversion: Instructions are provided for converting the unit's airflow configuration (downflow or horizontal right) by repositioning the coil assembly.
Simplified Wiring: Color-coded leads and top/side entry points for power and control wiring aim to simplify installation.
Access for Service: Minimum clearances (e.g., 36" from front for blower motor/coil replacement) are recommended to facilitate maintenance.
Duct System Integration: Designed for efficient integration with properly sized and installed duct systems, with recommendations for minimizing noise and vibration.
Filter Access: Built-in 1" filter access rack for easy filter installation and replacement.
ECM Motor: Provides consistent airflow across varying static pressures and distribution voltages, contributing to energy efficiency.

Maintenance Features

Filter Maintenance: Filters must be cleaned or replaced regularly (at least once per month, depending on usage and atmospheric conditions) to maintain unit efficiency.
Coil Cleaning: The coil can be cleaned with water if needed.
Lubrication: The blower motor bearings are permanently lubricated, eliminating the need for periodic lubrication.
Condensate Drain Check: During the cooling season, condensate drain lines should be checked to ensure proper flow from the primary drain. If condensate flows from the secondary drain, the unit should be shut off, and the pan and drains cleaned to prevent clogs and odors.
Air System Adjustment: Instructions are provided for measuring external duct static pressure and adjusting blower motor speed to ensure CFM is within the coil's airflow limitations.
Installation Verification Checklist: A comprehensive checklist is included to ensure all installation procedures, including TXV installation and drain trapping, are correctly accomplished.