Furnace Manual C23-41W-1

The Furnace C23-41W-1 is a high-efficiency gas furnace with 23,000 BTU output, 41,000 BTU input capacity, AFUE rating of 95%, single-stage operation, electronic ignition, variable-speed blower motor, multi-speed settings, built-in diagnostic system, safety shut-off features, and compatibility with standard thermostat systems. Designed for residential use with natural gas or propane (with conversion kit). Below are key sections for safety, features, installation, setup, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Thermostat 7. Operating Procedures 8. Maintenance Schedule 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Gas valve assembly, heat exchanger, blower motor, electronic control board, pressure switches, flame sensor, igniter, filter compartment.

Feature	Description
Gas valve	Controls gas flow to burners with safety shut-off
Heat exchanger	Stainless steel primary and secondary heat exchangers
Blower motor	Variable-speed ECM motor with multi-speed settings
Control board	Microprocessor-based with diagnostic LED
Pressure switches	Verify proper venting operation
Flame sensor	Detects burner flame for safety
Hot surface igniter	Electronic ignition system
Filter access	Front-loading filter compartment
Vent connections	PVC pipe connections for intake and exhaust
Electrical connections	120V AC power and thermostat terminals

Installation

Unpack and inspect contents. Install in approved location with proper clearances.

Position furnace: Place on level surface with minimum clearances (6" sides, 24" front, 1" rear).
Connect gas line: Use approved black iron pipe with pipe dope; pressure test for leaks.
Connect venting: Install PVC intake and exhaust pipes per local codes.
Connect electrical: 120V AC power supply and thermostat wiring.
Connect condensate drain: Install drain line to suitable drain location.

WARNING! Gas appliances can be dangerous; installation must be performed by qualified technician. Ensure proper ventilation and combustion air supply.

First-Time Setup

Power on furnace; follow startup sequence.

Verify gas supply: Ensure gas valve is open and gas pressure is correct.
Check electrical: Confirm 120V power and proper thermostat connection.
Set blower speeds: Adjust cooling and heating speed taps as needed.
Test operation: Initiate heating cycle via thermostat; observe ignition sequence.
Check venting: Verify proper draft and combustion.

CAUTION! Never bypass safety controls. Carbon monoxide hazard exists if improperly installed.

Specifications

Model: C23-41W-1
Input Capacity: 41,000 BTU/H
Output Capacity: 23,000 BTU/H
AFUE Rating: 95%
Gas Type: Natural gas (propane with conversion)
Electrical: 120V AC, 60Hz, 5.2 Amps
Blower Motor: Variable-speed ECM
Vent Size: 2" PVC intake and exhaust
Filter Size: 16x25x1 inch
Dimensions: 21"W x 48"H x 26"D

Controls and Settings

Access control board via front panel. Diagnostic LED: Flashing codes indicate system status.

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

Blower Speeds: Cooling (high), heating (medium-high), continuous fan (low). Gas Valve: Single-stage operation. Control Board: Self-diagnostic with error codes, lockout protection, status LED. Safety Controls: Limit switches, pressure switches, flame rollout switch, flame sensor.

Connecting Thermostat

Standard 5-wire thermostat connection: R (24V power), W (heat), G (fan), Y (cool), C (common).

Turn off power to furnace before wiring.
Strip wires 1/4 inch and connect to terminal board.
Match colors to terminals (R-red, W-white, G-green, Y-yellow, C-blue).
Secure wires and restore power.

Tip: Use programmable thermostat for optimal efficiency and comfort.

Operating Procedures

Normal heating operation sequence:

Thermostat calls for heat: Sends signal to control board.
Inducer motor starts: Creates draft through heat exchanger.
Pressure switch closes: Verifies proper venting.
Hot surface igniter glows: Heats to ignition temperature.
Gas valve opens: Gas flows to burners.
Ignition occurs: Burners light, flame sensor confirms.
Blower starts: After heat exchanger warms up.
Shutdown: When thermostat satisfied, gas valve closes, blower runs to dissipate heat.

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

Maintenance Schedule

Monthly: Check filter, clean if reusable. Annually: Professional inspection and cleaning.

Professional maintenance should include: Clean burners and heat exchanger, check gas pressure, inspect flame sensor and igniter, verify safety controls, check vent system, lubricate motor if required, check electrical connections.

Care & Cleaning

Turn off power before servicing. Replace filter every 1-3 months. Keep area around furnace clean and unobstructed.

CAUTION! Do not use compressed air to clean interior; can damage components. Only qualified technicians should service gas and electrical components.

Regulatory Information

ANSI Z21.47: Certified for natural gas operation. CSA International: Certified to applicable standards. UL listed components. For natural gas use only unless converted for propane. Installation must comply with local building codes and NFPA 54. For support, contact manufacturer at 1-800-555-HEAT or visit www.furnacemanufacturer.com.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No heat	Thermostat setting, power, gas supply	Check thermostat setting, circuit breaker, gas valve position.
Furnace not starting	Limit switch, pressure switch	Check filter, vent pipes, reset by power cycling.
Blower not running	Motor, capacitor, control board	Check for loose wires, blown fuse, motor capacitor.
Short cycling	Dirty filter, blocked vent	Replace filter, check vent pipes for obstruction.
Lockout mode	Failed ignition, flame loss	Check gas supply, igniter, flame sensor; power cycle to reset.

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

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