Siegler Furnace Manual

The Siegler Furnace is a high-efficiency heating system designed for residential and light commercial applications. This manual covers installation, operation, maintenance, and troubleshooting for various Siegler furnace models. The furnace features electronic ignition, multi-speed blower motor, safety controls, and energy-efficient operation. 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 to Ductwork 7. Operating Procedures 8. Safety Features 9. Maintenance & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Heat exchanger, blower assembly, gas valve, ignition system, control board, filter compartment, flue outlet.

Feature	Description
Heat exchanger	Stainless steel construction for efficient heat transfer
Blower assembly	Multi-speed motor for optimal airflow
Gas valve	Precise gas flow regulation
Ignition system	Electronic ignition for reliable startup
Control board	Microprocessor-based control system
Filter compartment	Standard 1-inch filter access
Flue outlet	3-inch PVC vent connection
Pressure switch	Safety device monitoring venting
Limit switch	Over-temperature protection
Flame sensor	Ensures proper burner operation

Installation

Unpack and inspect contents. Ensure proper clearances and level installation.

Position furnace: Place on stable, level surface with proper clearances (6 inches minimum from combustible materials).
Connect gas supply: Use approved gas pipe and fittings; pressure test for leaks.
Connect electrical: 120V AC power supply with proper grounding.
Connect ductwork: Secure supply and return air ducts properly.
Vent installation: Install PVC vent pipes according to local codes.

WARNING! Gas appliances can be dangerous; professional installation recommended. Ensure proper ventilation and follow all local codes.

First-Time Setup

Power on furnace; follow startup sequence.

Verify gas supply: Ensure gas valve is open and pressure is correct.
Check electrical: Confirm proper voltage and grounding.
Set thermostat: Install compatible thermostat and set to heating mode.
Initial startup: System will go through self-check and ignition sequence.
Adjust blower speed: Set appropriate CFM for your duct system.

CAUTION! Never bypass safety controls. If furnace fails to start, contact qualified technician.

Specifications

Input Capacity: 40,000-120,000 BTU/h (varies by model)
Efficiency: 80-96% AFUE depending on model
Gas Type: Natural gas or LP (conversion kit required)
Electrical: 120V AC, 60Hz, 3-8 amps
Blower Motor: Multi-speed PSC or ECM
Vent Size: 3-inch PVC
Filter Size: Standard 16x25x1 inch
Dimensions: Varies by model (typically 21"W x 21"D x 40"H)
Warranty: 20-year heat exchanger, 5-year parts

Controls and Settings

Access control board via front panel. Thermostat controls: HEAT, COOL, FAN, TEMPERATURE.

Control Board LEDs: Power indicator, status light, error code flashes.

Temperature settings: Adjust via thermostat. Fan control: AUTO/ON settings. Blower speed: Adjustable for heating and cooling modes. Limit switches: Factory set for safety. Pressure switch: Monitors vent operation. Gas valve: Regulates fuel flow.

Connecting to Ductwork

Supply duct: Connects to top or side plenum. Return air: Bottom or side connection.

Turn off power before making connections.
Secure duct connections with approved tape or mastic.
Ensure proper airflow with correctly sized ducts.
Install filter in return air duct or filter rack.

Tip: Proper duct sizing is critical for efficient operation and longevity.

Operating Procedures

Normal heating operation with thermostat control.

Set thermostat: Adjust to desired temperature in HEAT mode.
Startup sequence: Control board checks safety devices, ignites burners.
Blower operation: Fan starts after heat exchanger warms up.
Shutdown: Burners turn off first, blower continues for cool-down.
Fan only: Use FAN ON for continuous air circulation.

WARNING! Never operate furnace without filter. Keep combustible materials away from furnace.

Safety Features

Flame rollout switch: Shuts off gas if flame escapes burners. Limit switch: Prevents overheating. Pressure switch: Ensures proper venting. Flame sensor: Confirms burner ignition. Gas valve: Automatic shutoff if problems detected.

Maintenance & Cleaning

Turn off power and gas before servicing. Replace filter monthly during heating season. Annual professional maintenance recommended.

CAUTION! Do not attempt to clean heat exchanger or adjust gas valve without proper training. Carbon monoxide hazard exists.

Regulatory Information

ANSI Z21.47: Certified for safety standards. UL listed. Meets ASHRAE efficiency standards. For support, visit www.siegler.com or contact 1-800-555-HEAT. Installation must comply with National Fuel Gas Code and local building codes.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Furnace won't start	Power/thermostat	Check circuit breaker; verify thermostat settings; replace batteries.
No heat	Gas supply/ignition	Ensure gas valve open; check for error codes; verify pilot/ignition.
Blower not working	Motor/capacitor	Check blower door switch; test motor and capacitor.
Short cycling	Filter/limit switch	Replace dirty filter; check for blocked vents; test limit switch.
Unusual noises	Components/wear	Inspect blower wheel; check motor bearings; examine heat exchanger.

Reset: Turn power off for 30 seconds, then restart.

Service: 1-800-555-HEAT; www.siegler.com