Singer Gas Furnace Manual

The Singer Gas Furnace is a high-efficiency residential heating system designed for reliable performance and energy savings. Featuring advanced combustion technology, multiple safety systems, and user-friendly controls, this furnace provides consistent warmth while maintaining optimal fuel efficiency. Below are key sections covering safety, features, installation, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Installation Requirements 3. First-Time Setup 4. Technical Specifications 5. Controls and Settings 6. Venting System 7. Operating Instructions 9. Maintenance Schedule 10. Safety Information 11. Warranty Details 12. Troubleshooting

Features at a Glance

Key components: High-efficiency heat exchanger, Electronic ignition system, Multi-speed blower motor, Digital thermostat interface, Safety shut-off valves, Pressure relief valve.

Feature	Description
Heat Exchanger	Stainless steel construction for maximum efficiency and durability
Ignition System	Electronic hot surface ignition for reliable starts
Blower Motor	Variable speed ECM motor for quiet operation
Gas Valve	Modulating valve for precise temperature control
Thermostat Interface	Compatible with most digital thermostats
Pressure Switch	Ensures proper venting before ignition
Flame Sensor	Monitors burner operation for safety
Filter Access	Easy-access front panel for filter changes
LED Status Lights	Diagnostic indicators for troubleshooting
Safety Shut-off	Automatic gas shut-off in case of malfunction

Installation Requirements

Professional installation recommended. Ensure proper clearances and ventilation.

Location: Install in well-ventilated area with minimum clearances as specified.
Gas Connection: Use approved gas piping; pressure test before operation.
Electrical: Connect to dedicated 120V circuit with proper grounding.
Venting: Install according to local codes and manufacturer specifications.
Drain Line: Connect condensate drain to proper disposal point.

WARNING! Gas furnaces produce carbon monoxide; proper venting is critical. Only qualified technicians should perform installation.

First-Time Setup

Initial startup must be performed by qualified technician.

System Check: Verify all connections are secure and proper.
Gas Pressure: Adjust gas valve to specified pressure settings.
Venting: Confirm draft and proper vent operation.
Electrical: Check voltage and proper grounding.
Test Operation: Run through complete heating cycle.
Thermostat: Program desired temperature settings.

CAUTION! Never attempt first-time startup without proper training and equipment.

Technical Specifications

Input Capacity: 60,000 - 120,000 BTU/h (model dependent)
Efficiency: 80% - 96% AFUE (model dependent)
Gas Type: Natural Gas or LP (conversion kit required)
Gas Pressure: Natural Gas: 3.5" WC, LP: 10" WC
Electrical: 120V, 60Hz, 15 Amp circuit
Blower Motor: ECM variable speed, ½ - ¾ HP
Venting: PVC, CPVC, or ABS (category IV)
Dimensions: Varies by model (check specific model label)
Weight: 80 - 150 lbs (model dependent)
Sound Level: < 65 dB during operation

Controls and Settings

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

Thermostat Controls: POWER, HEAT/COOL mode, FAN (AUTO/ON), Temperature setting, PROGRAM schedule.

Furnace Controls: POWER switch, Diagnostic LED lights, Pressure test ports, Gas valve adjustment, Blower speed taps. Settings: Temperature rise adjustment, Blower delay, Ignition retry, Safety lockout timing.

Venting System

Category IV sealed combustion system. Requires dedicated intake and exhaust piping.

Vent Material: Use only approved PVC, CPVC, or ABS piping.
Vent Length: Follow manufacturer's maximum length specifications.
Clearances: Maintain proper clearances from combustible materials.
Terminations: Install vent caps according to local code requirements.
Slope: Ensure proper slope for condensate drainage.

Tip: Regular inspection of vent system is essential for safe operation.

Operating Instructions

For normal daily operation through thermostat interface.

Power On: Ensure furnace power switch is in ON position.
Thermostat Setting: Set to HEAT mode and desired temperature.
System Start: Furnace will initiate start sequence automatically.
Normal Operation: System will cycle on/off to maintain set temperature.
Fan Control: Set to AUTO for normal operation or ON for continuous airflow.
Seasonal Shutdown: Turn off power and gas supply during off-season.

WARNING! Never adjust gas valve or internal controls without proper training.

Maintenance Schedule

Regular maintenance ensures optimal performance and safety.

Frequency	Maintenance Task
Monthly	Check and replace air filter if dirty
Seasonal	Inspect vent system for obstructions
Annual	Professional inspection and cleaning
Annual	Check heat exchanger for cracks
Annual	Clean burners and ignition system
Annual	Verify gas pressure and combustion
Annual	Lubricate blower motor (if required)
Annual	Check safety controls operation

Safety Information

Carbon monoxide detectors required in sleeping areas. Never block vents or air intakes.

CAUTION! Gas furnaces can produce carbon monoxide - ensure proper ventilation and regular maintenance. Install CO detectors near sleeping areas.

Warranty Details

Limited warranty coverage: Heat exchanger - 20 years, Parts - 5 years, Labor - 1 year. Registration required within 90 days of installation. Warranty void if installed by unqualified personnel or improper maintenance. For claims, contact Singer Customer Service with model and serial numbers.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Furnace won't start	Power, thermostat, gas supply	Check power switch, thermostat setting, gas valve position
No heat	Pilot/ignition, filter, limit switch	Check ignition system, replace filter, reset limit switch
Short cycling	Filter, thermostat, overheating	Clean filter, check thermostat location, verify airflow
Blower won't stop	Thermostat setting, relay	Check FAN setting (AUTO/ON), inspect blower relay
Unusual noises	Motor, bearings, ductwork	Lubricate motor, check bearings, inspect duct connections
Gas odor	Leaks, combustion issues	EVACUATE AREA, call gas company, do not operate furnace
Pilot outage	Draft, thermocouple, gas supply	Check venting, replace thermocouple, verify gas pressure

Reset: Power cycle furnace by turning switch off for 30 seconds then on.

Service: 1-800-SINGER-1; www.singerhvac.com