Hot Blast 1500 Wood Furnace Manual

The Hot Blast 1500 is a high-efficiency wood-burning furnace designed for residential heating applications. This manual covers the Model 1500 wood furnace with a heating capacity of up to 1,500 square feet, featuring a heavy-duty steel construction, firebrick lining, adjustable air controls, blower system, and safety features including overheat protection. Below are key sections for safety, installation, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Installation Requirements 3. First-Time Setup 4. Technical Specifications 5. Controls and Operation 6. Maintenance Procedures 7. Safety Features 8. Chimney Requirements 9. Cleaning & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Heavy-duty steel firebox, firebrick lining, adjustable air intake, blower system, thermostat control, ash pan, door latch system.

Feature	Description
Heating Capacity	Up to 1,500 square feet
Firebox Material	Heavy-duty steel construction
Lining	Firebrick interior for heat retention
Air Controls	Primary and secondary air adjustment
Blower System	Variable speed blower for heat distribution
Thermostat Control	Automatic temperature regulation
Ash Pan	Removable for easy ash disposal
Door Safety	Positive latch system with heat shield
Flue Outlet	6-inch diameter for chimney connection
Weight	Approximately 250 pounds

Installation Requirements

Professional installation recommended. Ensure proper clearances and ventilation.

Location: Install on non-combustible surface with proper clearances (36 inches from combustible materials).
Chimney: Connect to approved Class A chimney with proper draft.
Ductwork: Connect to existing duct system or install new distribution system.
Electrical: Connect blower to standard 120V outlet.
Venting: Ensure proper outdoor air supply for combustion.

WARNING! Installation must comply with local building codes and NFPA standards. Use certified installer.

First-Time Setup

Complete installation verification before initial use.

Inspect unit: Check for shipping damage and ensure all components are present.
Install firebrick: Position firebrick according to diagram in firebox.
Connect chimney: Ensure proper seal and draft.
Test blower: Verify blower operation and airflow.
Seasonal preparation: Cure firebrick with small fires before regular use.

CAUTION! Never use gasoline or flammable liquids to start fire. Use only seasoned firewood.

Technical Specifications

Heating Capacity: 1,500 square feet maximum
Firebox Dimensions: 18" W x 16" H x 20" D
Fuel Type: Seasoned wood only
Flue Size: 6-inch diameter
Blower: 120V AC, variable speed
Thermostat Range: 50°F to 90°F
Weight: 250 pounds
Construction: 1/4" steel plate with firebrick lining
Clearance Requirements: 36" to combustibles
Burn Time: 6-8 hours per load (depending on wood type)

Controls and Operation

Front panel controls: Primary air control, secondary air control, blower switch, thermostat dial.

Operation Steps:

Open air controls fully before lighting
Build fire using kindling and small wood pieces
Close door once fire is established
Adjust air controls for desired burn rate
Set thermostat to desired temperature
Monitor blower operation and heat output

Air Controls: Primary (bottom) for initial burn, Secondary (top) for complete combustion. Blower Settings: Auto (thermostat controlled) or Manual (continuous operation).

Maintenance Procedures

Regular maintenance ensures optimal performance and safety.

Daily: Remove ashes when 2-3 inches deep in firebox
Weekly: Inspect door gasket and seals
Monthly: Clean flue and chimney connections
Seasonally: Inspect firebrick and replace if damaged
Annually: Professional chimney cleaning and inspection

Tip: Always allow furnace to cool completely before performing maintenance.

Safety Features

Built-in safety systems protect against common hazards.

Overheat protection: High-limit switch automatically shuts down blower
Door safety latch: Prevents accidental opening during operation
Heat shields: Protect surrounding areas from radiant heat
Flue damper: Optional for draft control
Ash pan safety: Removable only when cool

WARNING! Never leave furnace unattended while burning. Keep children and pets away from hot surfaces.

Chimney Requirements

Proper chimney installation is critical for safe operation.

Chimney Type: Class A insulated chimney required
Height: Minimum 3 feet above roof penetration
Clearance: 2 inches to combustible materials
Draft: Minimum 0.05" water column
Cleaning: Accessible for regular cleaning

CAUTION! Never connect to unlined masonry chimney. Ensure proper draft before operation.

Cleaning & Maintenance

Regular cleaning maintains efficiency and extends furnace life.

Ash Removal: Use metal container with tight-fitting lid
Firebox Cleaning: Brush interior when cool
Flue Cleaning: Use appropriate chimney brushes
Blower Maintenance: Vacuum dust from blower housing
Gasket Inspection: Replace if compressed or damaged

CAUTION! Wear protective gloves and eyewear during cleaning. Dispose of ashes in metal container away from structures.

Regulatory Information

UL Certified to UL 391 standards. EPA Phase II compliant for particulate emissions. Manufactured to meet ASTM standards for residential wood heating equipment. Copyright © 2025 Hot Blast Furnace Company. All rights reserved. For technical support, visit www.hotblastfurnace.com or contact 1-800-555-HEAT.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Poor draft/smoking	Chimney blockage/cold flue	Clean chimney; warm flue with newspaper; check height
Insufficient heat	Wet wood/air settings	Use seasoned wood; adjust air controls; check blower
Blower not working	Power/thermostat/overheat	Check power supply; verify thermostat setting; reset overheat switch
Door smoke leakage	Worn gasket	Replace door gasket; adjust latch tension
Rapid wood consumption	Excessive air supply	Reduce air control settings; check door seal
Creosote buildup	Cool flue temperatures	Burn hotter fires; use seasoned wood; clean regularly

Emergency: In case of chimney fire, close all air controls and call fire department immediately.

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