Keeprite G9MVE Furnace Manual

The Keeprite G9MVE is a high-efficiency gas furnace featuring variable-speed ECM motor technology, multi-stage heating capability, durable aluminized steel heat exchanger, electronic ignition system, built-in diagnostic controls, pressure switch safety, condensate drain system, and compatibility with standard thermostat wiring. Rated for residential use with AFUE ratings up to 96%. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Thermostat 7. Operating Modes 8. Maintenance Schedule 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Variable-speed ECM blower motor, aluminized steel primary heat exchanger, stainless steel secondary heat exchanger, hot surface ignitor, pressure switches, flame sensor, control board, condensate drain system.

Feature	Description
Variable-speed ECM motor	Energy-efficient blower operation with precise airflow control
Multi-stage heating	Two-stage gas valve for efficient temperature control
Aluminized steel heat exchanger	Durable primary heat exchanger for long service life
Stainless steel secondary	Corrosion-resistant secondary heat exchanger
Hot surface ignition	Electronic ignition system for reliable starts
Diagnostic LED	Built-in status light for troubleshooting
Pressure switches	Safety switches for proper venting operation
Condensate drain	PVC piping for condensate removal
Gas valve	Two-stage natural gas control
Flame sensor	Safety device to detect burner flame

Installation

Unpack and inspect contents. Ensure proper location with adequate clearance.

Position furnace: Place on stable, level surface with proper clearances (minimum 1" sides, 6" front).
Connect gas line: Use black iron pipe with proper thread sealant; pressure test for leaks.
Connect venting: Use PVC pipe for intake and exhaust; maintain proper slope.
Connect electrical: 120V AC power supply; proper grounding required.
Connect thermostat: Use 18-gauge thermostat wire; follow wiring diagram.
Connect condensate drain: Route PVC pipe to floor drain or condensate pump.

WARNING! Gas appliances require professional installation. Follow all local codes. Ensure proper ventilation.

First-Time Setup

Power on furnace; follow startup sequence.

Verify gas supply: Ensure gas valve is open; check for leaks with soap solution.
Set thermostat: Install compatible thermostat; set to heating mode.
Initial startup: Control board will run self-check; observe LED status light.
Adjust blower speed: Use dip switches on control board for proper airflow.
Test operation: Cycle furnace through both heating stages; verify proper operation.

CAUTION! Never bypass safety devices. Ensure proper combustion air supply.

Specifications

Heating Capacity: 40,000-120,000 BTU/h (multiple models)
Efficiency: Up to 96% AFUE
Stages: Two-stage heating operation
Motor: Variable-speed ECM blower motor
Gas Type: Natural gas
Electrical: 120V AC, 60Hz
Venting: PVC pipe (2" minimum)
Sound Level: Ultra-quiet operation
Warranty: Limited lifetime heat exchanger warranty

Controls and Settings

Access control board via front panel. LED status light indicates system operation.

Control Board: Integrated furnace controller with diagnostic capabilities.

Heating Stages: Low fire and high fire operation based on heating demand. Blower Control: Variable-speed operation with adjustable airflow. Safety Features: Pressure switches, flame rollout switches, high-limit switches. Diagnostic Codes: LED flash patterns indicate specific error conditions. Dip Switches: Configurable settings for blower speed, timing delays.

Connecting Thermostat

Standard thermostat connections: R (power), W (heat), G (fan), C (common), Y (cooling).

Turn off power to furnace before wiring.
Route thermostat wire from furnace to thermostat location.
Strip wires and connect to appropriate terminals.
Match colors to terminal designations.
Restore power and test operation.

Tip: Use compatible two-stage heating thermostat for full functionality.

Operating Modes

Supports heating and continuous fan operation.

Heating Mode: Thermostat calls for heat; furnace ignites in low or high stage.
Fan Operation: Continuous fan mode available for air circulation.
Stage Operation: Low stage for mild weather, high stage for extreme cold.
Safety Shutdown: Automatic shutdown if safety devices are triggered.
Diagnostic Mode: LED flashes indicate specific error codes.

WARNING! Never operate furnace with access panels removed. Keep combustible materials away.

Maintenance Schedule

Annual professional inspection recommended. Monthly filter changes during heating season.

Care & Cleaning

Turn off power before servicing. Replace air filters regularly. Keep area around furnace clean.

CAUTION! Only qualified technicians should service gas components. Never use compressed air to clean heat exchanger.

Regulatory Information

ANSI Z21.47: Certified for natural gas operation. CSA International approved. UL listed components. For support, visit www.keeprite.com or contact 1-800-465-4656. Manufactured to meet or exceed industry standards for safety and performance.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Furnace won't start	Power/thermostat	Check circuit breaker; verify thermostat settings; ensure gas valve open.
No heat	Ignition/safety	Check LED error code; verify flame sensor; inspect pressure switches.
Short cycling	Filter/airflow	Replace dirty filter; check for blocked vents; verify proper airflow.
Blower not running	Motor/control	Check blower door switch; verify motor operation; inspect control board.
Error codes flashing	System fault	Count LED flashes; refer to diagnostic chart in manual.

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

Service: 1-800-465-4656; www.keeprite.com