Statement of Requirement

Industrial Walk-In Oven

The Government requires one commercial, electric industrial walk-in oven to support high-temperature drying and curing processes. The oven shall be capable of providing controlled, uniform heating for the intended work products and shall meet the following minimum requirements.

1. General Requirements

• The oven shall be an electric industrial walk-in oven designed for drying and curing operations.

• The oven shall use a dual or combination recirculating-air system to ensure temperature uniformity throughout the effective work area.

• The oven shall be fully assembled, wired, factory set up, and tested before shipment.

• The oven shall include a minimum one-year manufacturer’s warranty from the date of shipment.

2. Physical Configuration

• Minimum effective work area: 7 feet wide by 7 feet high by 10 feet long.

• Maximum external dimensions: 9 feet 8 inches wide by 12 feet 5 inches high by 11 feet 6 inches long.

• The oven shall be sized to pass through an existing overhead door measuring 8 feet wide by 10 feet high.

• The oven shall include dual insulated access doors mounted on heavy-duty hinges.

• The access doors shall include a secure latch mechanism, high-temperature seals, and a proof-of-closure safety limit switch.

• The oven floor shall be zero-clearance and constructed of a minimum 3/16-inch steel plate or equivalent durable material.

• The oven controls shall be in an exterior wall-mounted control panel.

• Electrical and control components shall be housed in NEMA 12 or NEMA 4 enclosures, as appropriate for the operating environment.

3. Airflow and Ventilation

• Heated air shall be distributed through the oven ceiling using perforated slots, diffusers, or equivalent adjustable louvers.

• Return airflow shall be routed through sidewall returns, internal plenums, or an equivalent configuration that supports uniform airflow.

• The oven shall include a 6-inch-diameter gravity vent.

• The oven shall include an exhaust vent with a damper.

• The Government will provide the required exterior wall opening for the gravity vent.

4. Electrical and Thermal Performance

• The oven shall operate on 480-volt, three-phase, 60-Hz electrical power.

• The oven electrical load shall not exceed 35 amps and shall be compatible with a recommended 50-amp circuit breaker.

• The oven shall achieve a maximum operating temperature of at least 500 degrees Fahrenheit.

• The oven shall support controlled low-temperature curing beginning at 60 degrees Fahrenheit, or the lowest controllable temperature achievable above ambient conditions.

• The oven shall include an accelerated curing capability.

• The oven shall provide programmable temperature profiles with ramp-and-hold capability.

• The recirculation blower system shall include motor starters or equivalent controls and proof-of-airflow safety switches.

5. Controls and Safety

• The oven shall include an integrated programmable logic controller or equivalent multi-loop programmable control system with a touchscreen operator interface.

• The oven shall include a high-temperature alarm circuit with audible and visual alarms.

• The oven shall comply with applicable National Fire Protection Association Standard 86 requirements for industrial ovens and furnaces.

• The oven shall include all required safety interlocks, limit switches, and controls necessary for safe operation.

6. Delivery and Documentation

• The contractor shall provide delivery of the oven to the Government-designated location.

• The contractor shall provide manufacturer operating instructions, maintenance information, and warranty documentation.

Note: The Government must confirm whether the stated 500,000 BTU capacity remains a requirement. Because this is an electric oven requirement, the BTU capacity may be inconsistent with the specified 480-volt, three-phase electrical configuration and should be resolved before release.