E3EB 015H Nordyne Electric Furnace Manual

The E3EB 015H Nordyne Electric Furnace is a high-efficiency electric heating system designed for residential use, featuring 15kW heating capacity, multiple heating elements, integrated blower system, thermal overload protection, and compatibility with standard thermostat controls. Below are key sections for safety, features, installation, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Installation Requirements 3. Electrical Connections 4. Specifications 5. Controls and Operation 6. Maintenance Procedures 7. Safety Features 8. Wiring Diagrams 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Electric heating elements, blower assembly, control board, thermal limit switches, sequencer, transformer, and access panels.

Feature	Description
Heating Capacity	15kW electric heating elements
Blower Motor	PSC multi-speed blower for air circulation
Control System	Integrated control board with safety circuits
Thermal Protection	Automatic thermal limit switches
Sequencer	Stages heating elements for even heat distribution
Voltage Requirements	240V AC, 60Hz single phase
Airflow	Adjustable blower speeds for optimal performance
Filter System	Standard 1-inch filter slot
Safety Switches	Door interlock and high-limit protection
Wiring	Color-coded terminal connections

Installation Requirements

Proper installation is critical for safe and efficient operation. Follow all local codes and manufacturer specifications.

Location: Install in dry, level area with adequate clearance for service access.
Ductwork: Ensure proper duct sizing and sealing for optimal airflow.
Electrical: Requires dedicated 240V circuit with proper amperage rating.
Venting: Ensure adequate combustion air and proper venting if applicable.
Thermostat: Compatible with 24V thermostat systems.

WARNING! Installation must be performed by qualified HVAC technician. Electrical shock hazard exists.

Electrical Connections

All electrical connections must comply with NEC and local electrical codes.

Disconnect power at main breaker before beginning installation.
Connect line voltage: L1 and L2 to appropriate terminals (black/red wires).
Connect low voltage: R, W, G, C terminals to thermostat wiring.
Ground connection: Connect green ground wire to grounding lug.
Verify all connections are tight and secure.

CAUTION! Improper wiring can cause equipment damage and fire hazard.

Specifications

Model: E3EB 015H
Heating Capacity: 15kW (51,200 BTU/h)
Voltage: 240V AC, 60Hz
Amperage: 62.5A maximum
Blower Motor: 1/3 HP PSC multi-speed
Airflow: 800-1400 CFM adjustable
Filter Size: 16x25x1 inches (standard)
Dimensions: 21"W x 21"D x 49"H
Weight: 98 lbs
Safety Certifications: UL, CSA

Controls and Operation

Furnace operation is controlled by thermostat and internal control board.

Thermostat Settings: HEAT, OFF, FAN AUTO/ON modes. Control Board: Manages sequencer operation, blower control, and safety circuits.

Heating Sequence: Thermostat calls for heat → control board energizes sequencer → heating elements activate in stages → blower starts after heat exchanger warms → system runs until thermostat satisfied.

Blower Control: Auto mode operates with heating cycle; Continuous mode runs blower continuously for air circulation.

Maintenance Procedures

Regular maintenance ensures optimal performance and longevity.

Monthly: Inspect and replace air filter as needed.
Seasonal: Clean blower assembly and check motor operation.
Annual: Inspect heating elements for damage or corrosion.
Annual: Check electrical connections and terminal tightness.
Annual: Verify safety switch operation and control board function.

Tip: Keep area around furnace clean and free of combustible materials.

Safety Features

Multiple safety systems protect against overheating and electrical hazards.

Safety Feature	Function
High Limit Switch	Shuts off heating elements if temperature exceeds safe level
Thermal Fuse	One-time use safety device for extreme overheating
Door Safety Switch	Disables power when access panel is removed
Sequencer Timing	Prevents simultaneous activation of all heating elements
Overcurrent Protection	Circuit breakers protect against electrical overload

Wiring Diagrams

Refer to specific wiring diagram included with unit for proper connections.

Line Voltage: L1 (black), L2 (red), Ground (green) Low Voltage: R (24V hot), W (heat), G (fan), C (common)

Note: Wiring colors may vary. Always verify with actual unit and local codes.

Care & Cleaning

Disconnect power before performing any maintenance or cleaning.

Exterior: Wipe with dry cloth only; no liquids or cleaners.
Interior: Vacuum dust and debris from blower compartment.
Heating Elements: Use soft brush to remove dust buildup.
Ductwork: Keep supply and return vents clean and unobstructed.

CAUTION! Never use water or liquid cleaners on electrical components.

Regulatory Information

UL Listed: Complies with UL Standard 1995. CSA Certified: Meets Canadian Standards Association requirements. NEC Compliance: Designed to meet National Electrical Code requirements. Manufactured by Nordyne; for technical support contact 1-800-422-4328 or visit www.nordyne.com.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No heat	Power, thermostat, limit switch	Check circuit breaker; verify thermostat setting; reset high limit switch.
Blower not running	Motor, capacitor, control board	Check blower motor; test capacitor; verify control board operation.
Insufficient heat	Elements, sequencer, airflow	Test heating elements; check sequencer operation; verify proper airflow.
Frequent cycling	Filter, limit switch, thermostat	Replace dirty filter; check limit switch; calibrate thermostat.
Circuit breaker trips	Overload, short circuit	Check for grounded elements; verify proper wire sizing; inspect connections.

Reset: Turn power off for 5 minutes to reset control board.

Service: 1-800-422-4328; www.nordyne.com