International Comfort Products Electric Furnace Manual

The International Comfort Products Electric Furnace is a high-efficiency heating system designed for residential and light commercial applications. This electric furnace features multiple heating elements, integrated blower system, thermal overload protection, diagnostic LED indicators, and compatibility with various thermostat systems. Below are key sections for safety, features, installation, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Electric heating elements, Blower assembly, Control board, Thermal limit switches, Diagnostic LED, Air filter compartment, Service access panels.

Installation Requirements

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

1. Location Selection: Install in dry, level area with adequate clearance for service access.
2. Ductwork Connection: Ensure proper sealing of all supply and return duct connections.
3. Electrical Service: Verify adequate electrical capacity and proper circuit protection.
4. Airflow Requirements: Maintain minimum airflow specifications for proper operation.
5. Clearance: Maintain required clearances from combustible materials.

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.

1. Power Supply: Connect to dedicated circuit with proper amperage rating.
2. Grounding: Ensure proper equipment grounding.
3. Thermostat Wiring: Connect compatible thermostat using low-voltage wiring.
4. Circuit Protection: Install appropriate fuses or circuit breakers.
5. Field Wiring: Use copper conductors only; follow wiring diagram precisely.

CAUTION! Disconnect all power sources before servicing. Verify voltage with meter.

Technical Specifications

• Voltage: 208/240V AC, 60Hz
• Heating Capacity: 5kW to 20kW models available
• Airflow: 400-1400 CFM depending on model
• Blower Motor: ECM or PSC motor types
• Temperature Rise: 30-60°F operating range
• Filter Size: Standard 16x25x1 inch or custom sizes
• Dimensions: Varies by model (typical: 21"W x 21"D x 49"H)
• Weight: 80-120 lbs depending on model
• Sound Rating: Less than 75 dBA at 3 feet

Control System Operation

The furnace features an advanced control board with diagnostic capabilities and multiple operation modes.

Control Board: Monitors system operation, provides diagnostic codes, manages heating stages.

Operation Modes: HEAT, FAN ONLY, OFF. Diagnostic LED: Flashes error codes for troubleshooting. Heating Stages: Multiple stages for efficient operation. Blower Control: Automatic delay on startup and shutdown. Safety Circuits: Monitors limits, pressure switches, and flame rollout.

Thermostat Configuration

Compatible with most 24VAC thermostats including programmable and smart models.

1. Wiring: Connect R, W, G, C, Y terminals as required.
2. Configuration: Set thermostat for electric heat operation.
3. Staging: Configure for single or multi-stage operation.
4. Fan Control: Set for automatic or continuous operation.

Tip: Use manufacturer-recommended thermostat for optimal performance.

Maintenance Procedures

Regular maintenance ensures efficient operation and extends equipment life.

1. Filter Replacement: Change filters every 1-3 months depending on usage.
2. Blower Cleaning: Clean blower assembly annually.
3. Electrical Inspection: Check connections and components yearly.
4. Heating Elements: Inspect for damage or corrosion.
5. Airflow Verification: Check static pressure and airflow.
6. Safety Devices: Test limit switches and safety controls.

WARNING! Always disconnect power before performing maintenance.

Safety Features

Multiple safety systems protect against overheating and electrical hazards.

High Limit Switches: Automatic shutdown if temperatures exceed safe limits. Fusible Links: Protect heating elements from overload. Pressure Switches: Ensure proper airflow before operation. Door Safety Switches: Power interruption when service doors are removed. Thermal Fuses: Non-resettable protection for critical components.

Care & Cleaning

Regular cleaning maintains efficiency and prevents component failure.

Exterior: Wipe with dry cloth only. Interior: Vacuum dust and debris annually. Coils: Clean with soft brush if accessible. Drain System: Clear condensate lines if equipped with AC coil. Electrical Components: Use compressed air for dust removal.

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 per National Electrical Code. Energy Standards: Meets applicable DOE efficiency standards. For technical support, contact International Comfort Products at 1-800-XXX-XXXX or visit www.internationalcomfort.com.

Troubleshooting

Reset: Power cycle unit to clear temporary faults.

Service: 1-800-XXX-XXXX; www.internationalcomfort.com