UniTrane Fan-Coil - Page 3

The UniTrane^® fan-coil meets the standards of today’s market, as well as the anticipated needs of tomorrow’s market. The tradition that company founder Reuben Trane began 60 years ago continues with the latest generation of fan-coils from The Trane Company.

The UniTrane^® fan-coil is the leader in these key areas:

• Quality
• Serviceability
• Indoor Air Quality (IAQ)
• Controls
• Unit Flexibility

The HVAC market in the 1990s is vastly different from the market of just a few short years ago. New issues have surfaced such as indoor air quality (IAQ) and CFCs that demand a change in HVAC products. Renovation has overtaken new construction in the fan- coil market, which demands a unit design that caters to renovation issues. Taking these factors into consideration, Trane’s engineers and designers worked together to create a product that is an integral part of the company’s system solutions.

Quality

• Demand Flow™ technology is the manufacturing philosophy used to produce the UniTrane fan-coil.
• Coils and piping packages are air and leak-tested before mounting on the fan- coil.
• Coil piping connections are also air and leak-tested after mounting on the unit.
• All control end devices and moving components (fans and motors) are computer-tested after units are complete.

Serviceability

• Filters are easily removable and changed without removing the front panel on vertical cabinet units.
• Motors are easy to disconnect from the fan board, allowing easy service.
• The main and auxiliary drain pans are easily removable and wipe clean with a wet cloth.
• The manual output test function is an invaluable troubleshooting tool. By simply pressing the test button on the TUC or thermostat module, service personnel can manually exercise outputs in a pre-defined sequence.

IAQ Design

• Closed-cell insulation is standard on all units to help prevent fiberglass in the airstream.
• The main and auxiliary drain pans are constructed of a noncorrosive engineered plastic (ABS and CyColac T).
• The main and auxiliary drain pans are positively sloped in every plane to assure proper drainage and help maximize protection from microbial growth.
• The drain pans are removable for cleaning.
• Easy filter access encourages frequent changing.
• An optional fresh air damper is available that allows from zero to 100 percent economizer operation to comply with ASHRAE 62.
• UniTrane fan-coils have a blow-thru design. Low vertical units are draw-thru.

Controls

• The thermostat module and the terminal unit controller (TUC) are the latest in control technology.
• The TUC maximizes the efficiency of the fan-coil system using free cooling economizers and modulating valves.
• The TUC provides optimal setpoint control as well as the ability to monitor unit operation through diagnostic messages via Tracer^® building management system.
• The Tracer^® system works with the TUC to perform warm-up and cool-down energy features. The thermostat module also performs these functions.
• To customize unit control, Tracer^® or EveryWare ™ software will allow field modification of the TUC default settings.
• The thermostat module automatically determines the unit’s correct operating mode (heat/cool) by utilizing a proportional/integral (PI) control algorithm to maintain the space temperature at the active setpoint, allowing total comfort control.
• The thermostat module performs either continuous fan or fan cycling operation with only a movement of the fan mode switch.
• Entering water temperature sampling eliminates the need for inefficient bleedlines to sense automatic changeover on two-pipe changeover units with the thermostat module or TUC.
• The random start-up feature, available on units with either thermostat module or TUC controls, randomly staggers multiple unit start-up to reduce electrical demand peaks.
• Occupied/unoccupied operation allows the thermostat module or TUC to utilize unoccupied temperature setpoints.
• Trane thermostat modules and TUC’s are wired with a 24 VAC transformer to keep only a single source power connection requirement to the unit.
• All wall-mounted zone sensors require only low voltage control wiring from the device to the unit control box. (No line voltage.)
• All fan-coil controls are factory- mounted and tested to minimize field setup.

Unit Flexibility

• Two, three and four-row coils allow greater design flexibility in two and four-pipe systems.
• Fan motors are available for either high static (0.4-inch external static pressure) or free discharge applications.
• Piping is factory assembled, mounted and tested. Units are also available without piping.
• Control options are either a thermostat control sequence or a terminal unit controller (TUC), which can tie into a Tracer^® building automation system.
• An 8-inch (20 cm) extended end pocket is an available option on the piping end of cabinet style units.
• Slope-top vertical cabinet units are also available for school and dormitory applications to prevent items from being placed on top of the units.