WeatherKing Acclaim II Gas Furnace Manual

The WeatherKing Acclaim II is a high-efficiency gas furnace designed for residential heating applications. This model features advanced combustion technology, multiple heating stages, variable-speed blower motor, electronic ignition system, and comprehensive safety controls. Below are key sections for 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 and Combustion Air 7. Operation Instructions 9. Maintenance Schedule 10. Safety Information 11. Regulatory Compliance 12. Troubleshooting

Features at a Glance

Key components: Heat exchanger, burners, inducer motor, blower assembly, gas valve, control board, pressure switches, flame sensor, and limit switches.

Feature	Description
Heat Exchanger	Stainless steel primary and secondary heat exchangers
Burners	Multi-port in-shot burners for efficient combustion
Inducer Motor	Draft inducer for proper venting and combustion
Blower Assembly	Variable-speed ECM motor for quiet operation
Gas Valve	Multi-stage gas valve with pressure regulation
Control Board	Integrated furnace controller with diagnostic LEDs
Pressure Switches	Safety switches for vent and air pressure monitoring
Flame Sensor	Proves flame during operation cycle
Limit Switches	High-temperature safety cut-off switches
Ignition System	Hot surface igniter for reliable lighting

Installation Requirements

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

Location: Install in dry, clean area with adequate clearance for service access.
Venting: Use approved PVC or CPVC pipe for direct vent applications.
Gas Supply: Connect to proper gas line with sediment trap and shut-off valve.
Electrical: Connect to 120V AC power with proper grounding.
Ductwork: Ensure proper sizing and sealing of supply and return ducts.

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

First-Time Setup

Initial startup and commissioning procedures.

Verify all connections: Gas, electrical, venting, and ductwork.
Check gas pressure: Adjust manifold pressure to specifications.
Test safety controls: Verify operation of all limit and pressure switches.
Program thermostat: Set up heating stages and fan control.
Perform combustion analysis: Verify proper CO levels and efficiency.

CAUTION! Never bypass safety controls. Always test for gas leaks before operation.

Technical Specifications

Input Capacity: 40,000 - 120,000 BTU/H (varies by model)
Efficiency: Up to 96% AFUE
Stages: Single or two-stage heating operation
Blower Motor: Variable-speed ECM
Gas Type: Natural gas or LP (with conversion kit)
Electrical: 120V AC, 60Hz, 15 amp circuit
Venting: 2" PVC/CPVC for direct vent
Sound Level: As low as 65 dB
Warranty: Limited lifetime heat exchanger warranty

Controls and Settings

Integrated control board with diagnostic LED indicators. Access door switch for service safety.

Control Board LEDs: Power (green), Heat (yellow), Error codes (red blinking patterns).

Thermostat Connections: R (24V power), W/W1/W2 (heat stages), G (fan), C (common). DIP Switch Settings: Heating capacity, blower speeds, staging delays. Gas Valve Adjustment: Manifold pressure settings (natural gas: 3.5" WC, LP: 10" WC). Blower Settings: Adjustable airflow CFM for proper heating operation.

Venting and Combustion Air

Direct vent system using concentric or separate PVC pipes.

Vent Pipe: Use schedule 40 PVC or CPVC for combustion venting.
Combustion Air: Provide adequate fresh air intake per local codes.
Termination: Locate vent termination away from windows and air intakes.
Slope: Ensure proper slope for condensate drainage from vent pipes.

Tip: Maximum vent length varies by furnace size and installation configuration.

Operation Instructions

Normal heating cycle operation and thermostat control.

Call for Heat: Thermostat initiates heating cycle.
Pre-purge: Inducer motor runs to clear combustion chamber.
Pressure Check: Pressure switches verify proper venting.
Ignition: Hot surface igniter glows, gas valve opens.
Flame Detection: Flame sensor confirms ignition.
Blower Operation: Blower starts after heat exchanger warm-up delay.
Cycle Completion: Thermostat satisfied, gas valve closes, post-purge cycle.

WARNING! If furnace fails to ignite after multiple attempts, lockout occurs. Professional service required.

Maintenance Schedule

Regular maintenance ensures optimal performance and safety.

Frequency	Maintenance Task
Monthly	Check air filter, replace if dirty
Annually	Professional inspection and cleaning
Annually	Clean burners and heat exchanger
Annually	Check gas pressure and combustion
Annually	Inspect vent system and drains
Annually	Lubricate blower motor (if required)
Annually	Test safety controls and operation

Safety Information

Carbon monoxide detectors required in all living areas. Never operate without proper venting.

CAUTION! Gas furnaces produce carbon monoxide. Ensure proper venting and annual inspection. Install CO detectors near sleeping areas.

Regulatory Compliance

UL certified for safety. ANSI Z21.47 standards for gas-fired central furnaces. CSA International certified. Meets U.S. Department of Energy efficiency standards. For technical support, contact WeatherKing at 1-800-722-2102 or visit www.weatherking.com.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Furnace won't start	Power, thermostat, door switch	Check circuit breaker, thermostat settings, door switch engagement
No heat	Gas supply, ignition, flame sensor	Verify gas valve on, check igniter, clean flame sensor
Short cycling	Dirty filter, blocked vent, high limit	Replace filter, check vent pipes, verify airflow
Blower won't stop	Thermostat fan setting, control board	Check thermostat fan setting, test fan limit control
Error codes flashing	Various safety lockouts	Count LED flashes and refer to error code chart
Unusual noises	Blower, inducer, ductwork	Inspect blower wheel, inducer assembly, check duct connections

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

Service: 1-800-722-2102; www.weatherking.com