Operation

Operation with a conventional thermostat

The ReliaTel module has conventional thermostat connections as well as Zone Sensor Module connections. When a conventional thermostat is controlling the unit, operation differs as follows:

•Supply Air Tempering feature is not available. If outdoor air is being introduced through the equipment, discharge air temperature may be cold when not actively heating.

•Proportional Integral (PI) control is not available.

•Zone Sensor Diagnostics are only available on the RTRM module on the J6 terminals, instead of at the Zone Sensor in the space.

•Intelligent Fall-Back is not available. If a failure occurs in the device controlling the equipment, operation will cease.

•Heat Pump Smart Recovery and Smart Staging is not available. Heat Pump operation becomes more costly unless the generic control being applied can accomplish this.

•Remote Sensing Capabilities are not available on most mechanical thermostats.

•Space Temperature Averaging capabilities are not available on most mechanical thermostats.

•27½ to 50 VAV - Conventional thermostat input terminals are inactive.

•Built in Night Set Back and Unoccupied Functions function differently with a conventional mechanical thermostat.

•A built-in algorithm which allows for automatic reset of the discharge air temperature while economizing is not available.

The terminal strip for attaching the thermostat wires is located on the RTRM module in the control compartment.

When the unit is operating from a conventional thermostat or other binary input, the economizer setpoint feature, relative to the cooling and heating setpoints, is lost. The economizer control is based strictly on a signal from the thermostat, but still maintains mixed air temperature control of 53°±3°F when in the economizer mode. The economizer enable and disable function is still determined by the outside air sensor through the RTRM.

If a single-stage thermostat is used, only the economizer (if enabled) or the compressor (if economizer is disabled) will operate on a call for cooling. A twostage thermostat is required to achieve economizer operation and compressor operation at the same time.

With economizer enabled, a Y1 call for 1st stage cooling will be the economizer. The damper will modulate between minimum position and 100% to maintain mixed air temperature at 53°±3°. At 50°F the damper will be at minimum position. If the economizer is enabled, a Y2 call for 2nd stage cooling will start the first compressor if required. If the economizer is disabled, 1st stage (Y1) will be the first compressor. If the unit has two compressors, a call for 2nd stage cooling (Y2) will start the second compressor. When using a conventional thermostat, or other binary input, the ReliaTel controls will only allow two stages of cooling.

Figure 30 - Terminal strip

COM

T

X2

Y2

W2

G

W1/0

Y1

R

Customers occasionally require operation with a conventional thermostat rather than a zone sensor. In some cases there is a preference for a specific thermostat model, and in others there is reluctance to adopt newer technology that may not be as well understood as conventional thermostats. In addition, non-Trane Building Controllers typically provide an interface to HVAC equipment based on a conventional thermostat interface. Units applied with this type of controller need to accept conventional thermostat inputs.

48

RT-SVX20A-E4

Page 47 Page 49
Page 48
Image 48
Trane TSH 060, TSD manual Operation with a conventional thermostat, Terminal strip
Page 47 Page 49

TSD, TSH 060 specifications

The Trane TSH 060 and TSD series represent cutting-edge advancements in commercial HVAC systems, designed for efficient performance and enhanced reliability. These units are engineered for a wide range of applications, making them a popular choice for various industrial and commercial settings.

One of the standout features of the Trane TSH 060 is its energy efficiency. Equipped with advanced variable-speed scroll compressors, this series can modulate its output to match the specific cooling or heating demands of a building. This not only ensures optimal comfort but also significantly reduces energy consumption and operational costs. The integrated economizer enhances outdoor air usage, providing free cooling whenever outside conditions are favorable.

The TSD series complements the TSH models with its impressive flexibility and modular design. These units can be configured to accommodate diverse load requirements, ensuring that businesses can scale their HVAC solutions as their needs evolve. The TSD also incorporates Trane's proprietary Trane Tracer™ SC+ building management system, which allows for advanced monitoring and control capabilities. This system provides real-time data analysis and helps facilitate proactive maintenance, thereby minimizing downtime and maintenance costs.

Durability is another key characteristic of the TSH 060 and TSD units. Built with robust materials and components, these systems are designed to withstand the rigors of daily use in demanding environments. The corrosion-resistant cabinet and quality construction also contribute to extended service life and reduced risk of system failures.

In terms of sustainability, both the TSH 060 and TSD units use eco-friendly refrigerants, aligning with global initiatives to reduce greenhouse gas emissions. This commitment to environmentally responsible practices makes these HVAC systems a suitable choice for businesses aiming to enhance their sustainability profiles.

Finally, quiet operation is an essential feature of the Trane TSH 060 and TSD series. These units are designed with sound-dampening technology, ensuring that the systems operate discreetly without disrupting the work environment.

In summary, the Trane TSH 060 and TSD series offer a combination of energy efficiency, advanced technology, durability, and sustainability. Their modular design and compatibility with innovative building management systems make them ideal for businesses looking to optimize their HVAC systems while maintaining a commitment to environmental responsibility. With these features, Trane continues to set the standard in commercial HVAC solutions.
Top Page Image Contents