Trane DX Outdoor Air Unit Brochure

Trane DX Outdoor Air Unit

Fresh thinking in the marketplace

Energy costs continue to rise -- making already tight

operating budgets even more difficult to manage. The Trane

OAU helps manage tight energy budgets by minimizing the

energy required to optimize the outdoor air ventilation

performance of your HVAC system.

IAQ and energy costs demand creative solutions

Owners and operators of hotels, restaurants, schools and

other facilities are keenly aware of the need for fresh air in

their buildings. They are concerned with the tremendous

costs associated with building damage caused by airborne

moisture. They understand that customers, students, parents

and employees see moisture damage as evidence of an

unhealthy environment. Building moisture can create

negative experiences that reduce or eliminate return visits.

Trane has applied fresh thinking to outdoor air and

ventilation related problems and proudly introduces the new

Outdoor Air Unit (OAU). It’s another example of the Trane

commitment to offer solutions that deliver value and

long-range applications and service support to ensure

optimum performance and system life.

Improved IAQ: Customers want it, codes demand it

Delivering good IAQ has many challenges including increased

demands on ventilation rates required by building codes,

fluctuating occupancy, and the especially difficult challenge

of selecting equipment to perform at maximum outdoor air

design conditions, and control space humidity and comfort at

difficult part-load conditions. The Trane OAU is designed to

meet these challenges and deliver good IAQ.

Trane delivers solutions

Customers, hotel guests and employees are very aware that

indoor discomfort is unacceptable. They know that safe,

comfortable environments exist and they demand no less.

The Trane OAU solves these challenges with a

code-compliant system to properly condition outdoor air,

control humidity and deliver a safe, comfortable environment.

Comfortable temperature control, quiet operation

The Trane OAU provides seamless compatibility with Trane controllers,

components and applications software. Trane Integrated Comfort Systems™

(ICS) are sophisticated yet simple to operate. Factory commissioning means

less field labor, lower startup costs, faster trouble-free installation,

single-source responsibility and accurate operation from day one. The ICS

approach simplifies building management by reducing operating and service

expenses related to compatibility, programming and maintenance costs. The

Trane OAU provides a quiet solution for most environments that can be

typically installed on a rooftop over hotel corridors, retail spaces, restaurants,

commercial kitchens, hallways or rest rooms.

Next steps to higher efficiency

Effective dehumidification requires lower evaporator temperatures than typical

comfort cooling. To maintain comfort, dehumidification systems must reheat

this cooler air. The Trane OAU includes a modulating hot gas reheat option

that uses recovered compressor heat rather than supplemental gas or electric

heating systems to reheat air and maintain comfort in many applications.

The Trane OAU features stainless steel drain pans

sloped in two directions, an Energy Recovery

Ventilator (ERV) option, 2-inch double-wall panels,

hinged access doors and DDC ReliaTel™ controls.

Another energy saving OAU option is the Energy Recovery Ventilator (ERV).

The ERV exhausts building air via the OAU, transferring energy to the

incoming air to reduce heating costs in winter and cooling costs in summer.

How it works

Outdoor air is filtered to remove contaminants as it enters the OAU. Multiple

filter options address exacting IAQ standards and security concerns related to

airborne particulates. The OAU automatically controls dehumidification,

cooling or heating functions based on outdoor air or space conditions. When

outdoor air conditions permit, the OAU automatically operates in economizer

mode. The OAU can supply treated air directly to a singles space, or, by

ducting the OAU supply to the return of multiple conventional rooftop units,

one OAU can provide a cost-effective method of meeting ventilation and

comfort needs for multiple spaces.

The OAU offers numerous heating options including

modulating natural gas with 8:1 turn down,

factory-installed dual-fuel options, scroll compressors,

enhanced serviceability with slide-out fan section,

and standard direct-drive fan with VFD.