Dayton Fuel Trimmer Furnace Manual

The Dayton Fuel Trimmer Furnace is a high-efficiency heating system designed for residential and light commercial use, featuring advanced fuel trimming technology, digital temperature controls, multiple heat settings, safety shut-off systems, and energy-saving modes. Below are key sections for safety, features, installation, operation, maintenance, and troubleshooting.

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

Features at a Glance

Key components: Digital control panel, Fuel trimmer assembly, Heat exchanger, Blower motor, Safety sensors, Exhaust system.

Feature	Description
Digital Control Panel	LCD display with temperature settings and system status
Fuel Trimmer Technology	Optimizes fuel consumption for maximum efficiency
Multiple Heat Settings	Low, Medium, High, and Auto modes
Safety Shut-off System	Automatic shut-off for overheating or pressure issues
Programmable Thermostat	7-day programming capability
Blower Motor	Variable speed for optimal airflow
Heat Exchanger	Stainless steel construction for durability
Exhaust Vent	PVC piping for efficient venting
Filter Access Panel	Easy access for filter replacement
Power Switch	Main power control with safety lock

Installation

Unpack and inspect all components. Ensure proper clearance around unit.

Position unit: Place on level surface with minimum 12-inch clearance on all sides.
Connect fuel line: Use approved fuel piping; check for leaks with soap solution.
Electrical connection: Connect to dedicated 120V circuit with proper grounding.
Vent installation: Install PVC vent pipes according to local codes.
Ductwork connection: Connect to existing HVAC duct system.

WARNING! Installation must be performed by qualified HVAC technician. Improper installation may cause fire hazard.

First-Time Setup

Power on furnace; follow initial setup procedure.

System initialization: Allow 5-minute startup cycle for system calibration.
Temperature calibration: Use CALIBRATE function in settings menu.
Program schedule: Set daily temperature programs for energy savings.
Test safety features: Verify shut-off systems are functioning properly.
Fuel trimmer calibration: Run automatic fuel optimization cycle.

CAUTION! Do not bypass safety systems during setup. Keep area clear during initial operation.

Specifications

Heating Capacity: 60,000-100,000 BTU/hr
Efficiency Rating: 95% AFUE
Fuel Type: Natural Gas or Propane
Electrical Requirements: 120V AC, 60Hz, 15A
Control System: Digital microprocessor with LCD display
Blower Type: Variable speed ECM motor
Vent Material: PVC (2-inch diameter)
Dimensions: 42" H x 24" W x 28" D
Weight: 158 lbs
Operating Temp Range: -30°F to 120°F

Controls and Settings

Access control panel via front door. Main controls: POWER, MODE, TEMP UP/DOWN, MENU, RESET.

Display Indicators: Current temp, Set temp, System status, Error codes, Filter reminder.

Settings Menu: Temperature calibration, Schedule programming, Fan control (Auto/On), System test, Fuel trimmer adjustment, Safety reset. Advanced settings: Service codes, Installation parameters, Diagnostic mode.

Connecting to HVAC System

Compatible with standard forced-air duct systems. Requires proper sizing and balancing.

Turn off power to furnace and HVAC system.
Connect supply plenum to furnace outlet using sheet metal screws.
Connect return air duct to furnace intake.
Seal all connections with approved duct sealant.
Balance airflow by adjusting dampers if necessary.

Tip: Ensure ductwork is properly insulated and sealed for maximum efficiency.

Operating Procedures

Daily operation and special functions.

Power on: Press POWER button; system will begin startup sequence.
Set temperature: Use TEMP buttons or program schedule.
Select mode: HEAT, FAN ONLY, or OFF.
Fuel trimmer operation: Automatic adjustment for optimal efficiency.
Fan control: AUTO (cycles with heat) or ON (continuous operation).
Vacation mode: Reduces temperature when away for extended periods.
System reset: Press RESET to clear error codes after addressing issue.

WARNING! Do not attempt to adjust fuel trimmer settings without proper training.

Safety Features

Multiple safety systems: High-limit switch, Flame rollout switch, Pressure switch, Ignition safety lockout, Overcurrent protection. All safety systems automatically shut down furnace and display error code.

Maintenance & Cleaning

Regular maintenance required for optimal performance and safety.

Monthly: Check and replace air filter if dirty.
Seasonal: Inspect burners and heat exchanger for debris.
Annual: Professional inspection and cleaning recommended.
Clean blower assembly and motor annually.
Check vent system for obstructions.

CAUTION! Always turn off power and fuel supply before performing maintenance.

Regulatory Information

UL certified; meets ANSI Z21.47 standards for gas-fired central furnaces. CSA certified for Canadian market. EPA compliant for emissions. Copyright © Dayton Heating Systems. For technical support, visit www.daytonheating.com or contact 1-800-555-HEAT.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Furnace won't start	Power issue/thermostat	Check circuit breaker; verify thermostat settings; ensure door closed properly.
No heat	Fuel supply/ignition	Check fuel valve; verify pilot/igniter operation; check error codes.
Insufficient heat	Filter/airflow	Replace air filter; check duct dampers; verify blower operation.
Frequent cycling	Thermostat location/filter	Relocate thermostat if near heat source; clean/replace filter.
Unusual noises	Blower/burners	Inspect blower wheel; clean burners; check for loose components.
Error codes displayed	System faults	Refer to error code chart in service manual; reset system after correction.

Reset Procedure: Power off for 30 seconds, then restart.

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