armstrong air furnace manual pge10a42d100a-3

The Armstrong Air PGE10A42D100A-3 is a high-efficiency gas furnace designed for residential heating applications. This 100,000 BTU furnace features a two-stage gas valve, variable-speed blower motor, and AFUE rating of up to 95%. Below are key sections covering safety, installation, operation, maintenance, and troubleshooting for proper furnace operation and longevity.

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. Operating Instructions 8. Maintenance Procedures 9. Safety Information 10. Regulatory Compliance 11. Troubleshooting Guide

Features at a Glance

Key components: Two-stage gas valve, variable-speed ECM blower motor, hot surface ignitor, flame sensor, pressure switches, and integrated control board.

Feature	Description
Heating Capacity	100,000 BTU/hr input
AFUE Rating	Up to 95% efficiency
Gas Valve	Two-stage operation for improved comfort
Blower Motor	Variable-speed ECM for quiet operation
Ignition System	Hot surface direct ignition
Heat Exchanger	Stainless steel primary and secondary
Control Board	Integrated furnace controller with diagnostic LEDs
Pressure Switches	Ensures proper venting operation
Flame Sensor	Monitors burner flame presence
Filter Size	Standard 16x25x1 inch filter

Installation Requirements

Professional installation required. Verify local codes and obtain permits.

Location: Install in dry, clean area with adequate clearance for service access.
Gas Connection: Use black iron pipe; test for leaks with soap solution.
Electrical: 120V AC, 60Hz power supply with proper grounding.
Venting: PVC pipe system for intake and exhaust; maintain proper slope.
Ductwork: Ensure proper sizing and sealing for optimal airflow.

WARNING! Gas appliances can produce carbon monoxide. Proper installation and venting are critical for safety.

First-Time Setup

Initial startup must be performed by qualified technician.

Verify all connections: Gas, electrical, venting, and ductwork.
Check gas pressure: Adjust manifold pressure to specifications.
Test ignition sequence: Ensure proper burner operation.
Set thermostat: Program for desired temperature settings.
Check airflow: Verify proper CFM and temperature rise.

CAUTION! Never bypass safety controls. Always follow manufacturer specifications.

Technical Specifications

Model: PGE10A42D100A-3
Heating Capacity: 100,000 BTU/hr input
AFUE: 95%
Gas Type: Natural Gas
Stages: Two-stage heating
Blower Type: Variable-speed ECM
Electrical: 120V/1Ph/60Hz
Max External Static Pressure: 0.80 inches w.c.
Temperature Rise: 35-65°F
Vent Size: 2-inch or 3-inch PVC
Dimensions (HxWxD): 44x17.5x21 inches

Controls and Settings

Integrated control board with status LEDs and dip switch settings.

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

DIP Switch Settings: Blower speeds (COOL, HEAT LOW, HEAT HIGH), accessory configurations. Gas Valve: Two-stage operation with pressure regulation. Thermostat Connections: R, C, W1, W2, G, Y for compatible thermostat operation.

Venting and Combustion Air

Direct vent system using PVC pipe for intake and exhaust.

Vent Pipe: Schedule 40 PVC, CPVC, or ABS approved for combustion gases.
Termination: Maintain proper clearance from windows, doors, and air intakes.
Slope: Pitch vent pipes back toward furnace 1/4 inch per foot.
Combustion Air: Provide adequate fresh air for proper combustion.

Tip: Always check local codes for specific venting requirements.

Operating Instructions

Normal operation controlled by thermostat.

Set thermostat to desired temperature above room temperature.
Furnace will initiate startup sequence: inducer motor, pressure switch verification, ignitor warm-up, gas valve opening.
Once flame established, blower will start after predetermined delay.
During operation, furnace may cycle between low and high stages based on demand.
Shutdown sequence: Gas valve closes, inducer continues for post-purge, blower runs for cool-down.

WARNING! Never operate furnace without proper filter installed.

Maintenance Procedures

Regular maintenance ensures optimal performance and safety.

Monthly: Check and replace air filter as needed
Annual: Professional inspection and cleaning
Clean flame sensor with emery cloth
Inspect heat exchanger for cracks or damage
Check vent system for obstructions
Verify gas pressure and combustion analysis
Lubricate inducer motor if required

CAUTION! Turn off power and gas supply before performing any maintenance.

Safety Information

Carbon monoxide detectors required in sleeping areas and near furnace.

Emergency Shutdown: Turn off gas valve and electrical power if abnormal operation detected.

Smoke and CO Detectors: Install and test regularly. Never disable safety devices.

Regulatory Compliance

ANSI Z21.47/CSA 2.3: Certified for natural gas operation. UL listed. Meets DOE efficiency standards. For technical support, contact Armstrong Air at 1-800-448-5872 or visit www.armstrongair.com.

Troubleshooting Guide

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, ignitor, flame sensor	Verify gas valve on, check ignitor operation, clean flame sensor.
Short cycling	Filter, airflow, overheating	Replace filter, check for blocked vents, verify proper airflow.
Blower not working	Motor, capacitor, control board	Check motor operation, test capacitor, verify control signals.
Error codes flashing	Various safety lockouts	Count LED flashes and refer to error code chart in manual.

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

Service: 1-800-448-5872; www.armstrongair.com