Carrier Furnace 58PAV070-12 Manual

The Carrier 58PAV070-12 is a high-efficiency gas furnace with 70,000 BTU input capacity, 80% AFUE rating, single-stage operation, induced draft combustion system, hot surface ignition, multi-speed blower motor, and built-in diagnostic system. Designed for residential use with natural gas, featuring safety controls, filter access, and compatibility with standard thermostat systems. Below are key sections for safety, features, installation, operation, maintenance, and troubleshooting.

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

Features at a Glance

Key components: Gas valve, inducer motor, heat exchanger, blower assembly, control board, pressure switches, flame sensor, hot surface ignitor.

Feature	Description
Input Capacity	70,000 BTU/hr natural gas
Efficiency Rating	80% AFUE
Blower Motor	Multi-speed PSC motor
Ignition System	Hot surface direct ignition
Venting	PVC or ABS plastic pipe
Filter Size	16x25x1 inch standard
Gas Connection	1/2-inch NPT
Electrical	120V, 60Hz, 1.5A
Control Board	Integrated diagnostic LED
Warranty	20-year heat exchanger limited

Installation Requirements

Professional installation required. Verify local codes and obtain permits.

Location: Install in dry, clean area with proper clearance (minimum 1 inch sides, 6 inches front).
Gas connection: Use approved gas pipe; pressure test for leaks.
Electrical: Connect to dedicated 120V circuit; proper grounding required.
Venting: Install PVC vent pipes per manufacturer specifications.
Drain line: Connect condensate drain to suitable drainage.

WARNING! Gas appliances can be hazardous; installation must be performed by qualified technician.

First-Time Setup

After installation, perform initial startup procedure.

Verify all connections: Gas, electrical, venting, drain.
Install air filter: Ensure proper size and orientation.
Set thermostat: Install batteries; configure for heat mode.
Power on: Turn on furnace switch and gas supply.
Test operation: Set thermostat above room temperature.
Check flame: Observe ignition sequence and burner operation.

CAUTION! Never bypass safety controls; ensure proper ventilation.

Specifications

Model: 58PAV070-12
Input BTU: 70,000 BTU/hr
AFUE Rating: 80%
Gas Type: Natural Gas
Blower Speeds: Multi-speed for heating/cooling
Electrical: 120V, 60Hz, 1.5A
Dimensions: 21"W x 21"D x 45"H
Venting: 2-inch PVC required
Weight: 98 lbs
Sound Level: < 65 dB

Controls and Operation

Integrated control board with diagnostic LED. Access door safety switch.

Operation Sequence: Thermostat call → Inducer motor starts → Pressure switch proves → Hot surface ignition → Gas valve opens → Flame established → Blower starts after delay.

Diagnostic LED: Flashing codes indicate system status and fault conditions. Refer to fault code chart on inner door panel.

Thermostat Connection

Compatible with standard 24V thermostats. Terminal designations: R (power), W (heat), G (fan), C (common).

Turn off power before connecting thermostat wires.
Match wire colors to terminal designations.
Use 18-gauge thermostat wire minimum.
Program thermostat for single-stage heat operation.

Tip: For optimal performance, use programmable thermostat.

Maintenance Procedures

Regular maintenance ensures efficiency and safety.

Monthly: Check and replace air filter as needed.
Annual: Professional inspection and cleaning.
Seasonal: Verify proper operation before heating season.
Visual inspection: Check vent pipes, drain lines, burners.
Test safety controls: Verify limit switches and pressure switches.

WARNING! Disconnect power before servicing; only qualified technicians should perform internal maintenance.

Safety Features

Multiple safety systems: Flame rollout switch, high limit switch, pressure switches, door safety switch, flame sensor.

Carbon monoxide detection: Install CO detectors near sleeping areas. Never operate with blocked vents or restricted airflow.

Care & Cleaning

Exterior: Wipe with damp cloth; mild detergent if needed. Keep area around furnace clean and unobstructed.

CAUTION! Never use water or cleaners on electrical components. Keep combustion area clear of debris.

Regulatory Information

UL listed; ANSI Z21.47 compliant. Natural gas installation must comply with NFPA 54. Electrical installation per NEC. For support, contact Carrier at 1-800-227-7437 or visit www.carrier.com.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Furnace won't start	Power/thermostat	Check circuit breaker; verify thermostat setting; replace batteries.
No heat	Gas supply/ignition	Verify gas valve on; check pilot/ignition; inspect filter.
Short cycling	Dirty filter/overheat	Replace air filter; check venting; verify proper airflow.
Blower won't stop	Thermostat/fan switch	Check thermostat fan setting; inspect fan limit control.
Unusual noises	Motor/bearings	Lubricate if required; check for obstructions; inspect blower wheel.

Reset: Power cycle furnace; wait 5 minutes for automatic reset.

Service: 1-800-227-7437; www.carrier.com