Newmac Furnace Manual

The Newmac Furnace is a high-efficiency heating system designed for residential and commercial use, featuring advanced combustion technology, multiple heat settings, digital thermostat control, safety shut-off mechanisms, energy-saving modes, and easy maintenance access. Operating on natural gas or propane with 120V AC power supply. Below are key sections for safety, features, installation, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: High-efficiency burner assembly, Digital thermostat, Heat exchanger, Blower motor, Safety valves, Control panel, Exhaust system.

Feature	Description
Digital thermostat	Programmable temperature control with LCD display
Multi-speed blower	Adjustable airflow for optimal heating distribution
Safety shut-off	Automatic gas valve closure in case of malfunction
Heat exchanger	Stainless steel construction for maximum efficiency
Control panel	LED indicators for system status and diagnostics
Exhaust vent	PVC piping for efficient combustion gas removal
POWER switch	Main system power control
MODE selector	Heat, Fan Only, or Off settings
TEMP adjustment	Temperature setpoint controls
RESET button	System reset for error conditions

Installation Requirements

Unpack and inspect all components. Ensure proper location with adequate clearance.

1. Location selection: Choose well-ventilated area with minimum 12-inch clearance on all sides.
2. Gas connection: Use approved gas line with shut-off valve; pressure test required.
3. Electrical connection: 120V AC dedicated circuit with proper grounding.
4. Venting installation: Install PVC vent pipes according to local codes.
5. Thermostat wiring: Connect to compatible 24V thermostat system.

WARNING! Installation must be performed by qualified technician only. Improper installation can cause fire hazard or carbon monoxide poisoning.

First-Time Setup

Power on furnace; follow startup sequence.

1. System initialization: Turn power on; wait for control board self-test.
2. Gas line purge: Open gas valve; purge air from line following manufacturer procedure.
3. Thermostat programming: Set desired temperature schedules and modes.
4. Test operation: Initiate heating cycle to verify proper function.
5. Safety check: Confirm all safety devices are operational.

CAUTION! Never bypass safety devices. Ensure proper ventilation during initial startup.

Technical Specifications

• Heating Capacity: 40,000-120,000 BTU/hr (model dependent)
• Fuel Type: Natural gas or propane
• Efficiency Rating: 92-96% AFUE
• Electrical Requirements: 120V AC, 60Hz, 5A
• Venting: 2-inch PVC pipe
• Dimensions: Varies by model (typically 24"W x 48"H x 24"D)
• Weight: 80-150 lbs
• Operating Pressure: Natural gas: 3.5" WC, Propane: 11" WC
• Warranty: 10-year heat exchanger, 5-year parts

Controls and Operation

Access control via thermostat or furnace control panel. Main Controls: POWER, MODE selector, TEMP adjustment, FAN speed.

Thermostat: Temperature setpoint, Schedule programming, System mode (Heat/Cool/Off), Fan control, Hold function.

Operating Modes: HEAT (automatic temperature control), FAN ONLY (circulation without heat), OFF (system shutdown). Temperature Settings: Adjustable from 50°F to 90°F. Fan Settings: AUTO (cycles with heat), ON (continuous operation). Advanced Features: Vacation mode, Filter reminder, System diagnostics.

Maintenance Procedures

Regular maintenance ensures optimal performance and safety.

1. Monthly: Check filter condition; replace if dirty.
2. Seasonal: Inspect burners and heat exchanger for debris.
3. Annual: Professional inspection of gas pressure, electrical connections, and safety devices.
4. Biannual: Clean blower assembly and motor.
5. As needed: Check vent pipes for obstructions.

Tip: Keep maintenance log with dates and services performed.

Safety Features

Multiple safety systems protect against hazardous conditions.

• Flame rollout switch: Shuts off gas if flame escapes burner area
• High limit switch: Prevents overheating by shutting off burners
• Pressure switch: Ensures proper venting before ignition
• Ignition safety: Monitors flame presence during operation
• Gas valve: Automatic shut-off in emergency conditions
• Carbon monoxide detector compatibility: Works with external CO detectors

WARNING! Never disable safety devices. Test safety systems regularly.

Energy Efficiency

Advanced features reduce energy consumption and operating costs.

1. Variable-speed blower: Adjusts airflow for optimal heat transfer
2. Modulating gas valve: Precise flame control matches heating demand
3. Smart recovery: Learns heating patterns for efficient operation
4. Standby mode: Reduces power consumption when not active
5. Zone control compatibility: Works with multi-zone systems

Estimated annual operating cost: $400-800 depending on climate and usage.

Care & Cleaning

Turn off power before cleaning. Use soft brush and vacuum for interior components.

Cleaning Schedule: Filter monthly, Burners annually, Blower quarterly, Vent pipes biannually.

CAUTION! Do not use water or chemical cleaners on electrical components. Wear protective equipment when handling filters.

Regulatory Information

UL certified for safety standards. ANSI Z21.47 compliant for gas appliances. Meets DOE energy efficiency requirements. CSA International certified. Copyright © 2025 Newmac Heating Systems; all rights reserved. For technical support, visit www.newmacfurnace.com or contact 1-800-555-HEAT. Installation must comply with local building codes and regulations.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Furnace won't start	Power loss/thermostat	Check circuit breaker; verify thermostat settings; ensure door panel secure.
No heat produced	Gas supply/ignition	Verify gas valve open; check pilot/igniter; inspect gas pressure.
Blower not working	Motor/control issue	Check blower door switch; test motor capacitor; verify control board signal.
Frequent cycling	Filter/thermostat	Replace dirty filter; check thermostat location; inspect limit switch.
Unusual noises	Mechanical issues	Inspect blower wheel; check motor bearings; verify ductwork clear.
Error codes displayed	System faults	Refer to diagnostic chart in service manual; reset if applicable.

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

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