STjh 20-ton rooftop air handling unit with a short weatherproof chassis and condenser section on white.

STJH-ROOFTOP-AIR-HANDLING-UNIT-20TON

Rooftop Air Handling Unit 20-Ton

A 20-ton packaged rooftop air handler delivering 8000 CFM from the shortest selected chassis for a small clean manufacturing wing.

20-ton nominal capacity
8000 CFM standard airflow
13 ft 9 in compact chassis

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Product Introduction

This 20-ton rooftop platform combines cooling, supply airflow and selectable heating or outdoor-air functions in a 13 ft 9 in long cabinet. Its 8000 CFM standard airflow is suited to a defined manufacturing wing or clean support block that needs packaged outdoor equipment without the length and weight of the larger rooftop models.

Key Features

Small rooftop footprint

The shortest selected cabinet reduces the roof area and service-platform length needed for packaged conditioning.

Integrated cooling package

Factory-arranged refrigeration and supply-air components simplify connection to a ducted clean-facility zone.

Ventilation accessory choice

Outdoor-air dampers, filtration and heat options can be selected around the room pressure and climate duty.

Technical Parameters

Nominal Cooling Capacity	20 tons
Standard Airflow	8000 CFM
Gross Cooling Capacity	Approximately 255000 Btu/h at referenced condition
Cabinet Dimensions	13 ft 9 in x 7 ft 10 in x 6 ft 1-1/8 in
Refrigeration	Packaged direct-expansion circuits
Supply Fan	Belt-drive or selected packaged fan arrangement
Heating Options	Gas, electric or hydronic arrangements as available
Outdoor Air	Damper and economizer options
Installation	Weatherproof rooftop curb mounting
Customization	Airflow, heat source and outdoor-air accessories can be configured for the intended application and operating environment.

Applications

Small clean manufacturing wings, pharmaceutical support blocks, controlled packaging areas and laboratory buildings using a packaged rooftop system.

Solutions for Your Application

Roof space is limited and a long high-tonnage chassis would obstruct access routes.Use the 20-ton short frame and coordinate the curb, duct drops and service clearances within the available roof zone.

The served clean area needs stable outdoor-air delivery as filters load.Select suitable fan control and monitor filter pressure so the 8000 CFM duty can be maintained.

Available Options

Filter upgrades, outdoor-air economizer, heating section, fan controls, smoke detection, curb adapter and building-control interface are selectable.

Planning a Rooftop Air Handling Unit 20-Ton specification?

Send us your dimensions, installation conditions, performance targets and required surface finish.

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