Evcon Industries Furnace Manual

The Evcon Industries Furnace is a high-efficiency residential heating system designed for reliable performance and energy savings. This manual covers installation, operation, maintenance, and troubleshooting for various Evcon furnace models. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Components 7. Operation Guidelines 8. Safety Features 9. Maintenance & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: High-efficiency heat exchanger, electronic ignition system, multi-speed blower motor, electronic thermostat interface, safety shut-off switches, and diagnostic LED indicators.

Feature	Description
Heat Exchanger	Stainless steel construction for durability and efficiency
Ignition System	Electronic hot surface ignition for reliable starts
Blower Motor	Multi-speed ECM motor for optimal airflow
Thermostat Interface	Compatible with standard 24V thermostats
Safety Switches	Rollout and limit switches for protection
Diagnostic LED	Flash codes for troubleshooting
Gas Valve	Precision gas control for efficient operation
Filter System	Standard 1-inch or 4-inch media filter compatibility
Venting	PVC venting for high-efficiency models
Power Requirements	120V AC, 60Hz standard household power

Installation

Unpack and inspect all components. Ensure proper clearances and ventilation.

Location Selection: Choose well-ventilated area with proper clearances (minimum 1 inch from combustible materials).
Gas Connection: Use approved gas piping; pressure test for leaks before operation.
Electrical Connection: Connect to dedicated 120V circuit with proper grounding.
Venting Installation: Install PVC vent pipes according to local codes and manufacturer specifications.
Ductwork Connection: Secure supply and return ducts with proper sealing.

WARNING! Installation must be performed by qualified HVAC technician. Improper installation can cause fire, explosion, or carbon monoxide poisoning.

First-Time Setup

Complete installation verification and initial system startup.

System Check: Verify all connections are secure and proper.
Gas Pressure: Set manifold pressure to specification (typically 3.5" WC for natural gas).
Thermostat Wiring: Connect thermostat according to wiring diagram.
Initial Startup: Follow lighting instructions; observe first heating cycle.
Airflow Verification: Check temperature rise across heat exchanger.

CAUTION! Never bypass safety controls. Ensure proper combustion air supply.

Specifications

Heating Capacity: 40,000 to 120,000 BTU/h depending on model
Efficiency: 80% to 96% AFUE
Fuel Type: Natural Gas or Propane
Electrical: 120V AC, 60Hz, 5-15 Amp circuit
Blower Motor: Multi-speed ECM or PSC
Filter Size: 16x25x1 or 20x25x1 standard
Venting: Category I or IV depending on efficiency
Warranty: 20-year heat exchanger, 5-year parts
Dimensions: Varies by model (typically 21"W x 21"D x 48"H)

Controls and Settings

Access control board via front panel. Integrated control module with diagnostic capabilities.

Thermostat: HEAT/COOL/OFF selector, FAN AUTO/ON, temperature setpoint.

Furnace Controls: POWER switch, diagnostic LED, dip switches for blower speeds, gas valve adjustment. Settings: Temperature rise adjustment, blower off delay, continuous fan operation, fault code reset.

Connecting Components

Gas supply: 1/2" or 3/4" black iron pipe. Electrical: 120V dedicated circuit. Thermostat: 18/5 thermostat wire. Venting: PVC or metal depending on model.

Turn off gas and electrical power before making connections.
Use pipe compound rated for gas on all threaded connections.
Follow local codes for venting requirements and clearances.
Test all connections for leaks before final operation.

Tip: Always use two wrenches when connecting gas piping to prevent damage to valves.

Operation Guidelines

Standard heating cycle operation and seasonal use.

Startup: Set thermostat to desired temperature; system will initiate heating cycle.
Normal Operation: Blower starts after warm-up delay; runs until thermostat satisfied.
Shutdown: Gas valve closes; blower continues for cool-down period.
Seasonal Startup: Check filter, clear vents, verify proper operation after summer shutdown.
Continuous Fan: Use FAN ON position for constant air circulation.

WARNING! Never operate furnace without filter. Keep combustion air openings clear.

Safety Features

Flame rollout switch: Shuts off gas if flame detected outside burner area. High limit switch: Prevents overheating. Pressure switch: Ensures proper venting. Ignition control: Safety shutdown after multiple failed ignition attempts.

Maintenance & Cleaning

Monthly: Check and replace filter as needed. Annual: Professional inspection and cleaning.

CAUTION! Turn off power and gas before servicing. Use only manufacturer-approved replacement parts.

Regulatory Information

UL certified for safety. ANSI Z21.47 standards compliance. CSA International approved. Manufactured to meet DOE energy efficiency standards. For technical support, contact Evcon Industries at 1-800-926-4567 or visit www.evcon.com.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Furnace won't start	Power, thermostat, door switch	Check circuit breaker; verify thermostat setting; ensure door properly closed.
No heat	Gas supply, ignition, filter	Verify gas valve on; check for ignition attempts; replace dirty filter.
Short cycling	Filter, limit switch, airflow	Clean/replace filter; check for blocked vents; verify proper airflow.
Blower not running	Motor, capacitor, control board	Check for power to motor; test capacitor; inspect control board.
Unusual noises	Motor bearings, ductwork, heat exchanger	Lubricate motor if applicable; check for loose panels; inspect heat exchanger.

Reset: Turn power off for 30 seconds then restore. Check diagnostic LED for fault codes.

Service: 1-800-926-4567; www.evcon.com