Economizer Set-Up, Ignition Module | Trane TSH 060, TSD specs

Operation

Economizer Set-Up

Adjusting the minimum position potentiometer located on the unit economizer Actuator (ECA) sets the required amount of ventilation air.

Two of the three methods for determining the suitability of the outside air can be selected utilizing the enthalpy potentiometer on the ECA, as described below:

1.Ambient Temperature - controlling the economizing cycle by sensing the outside air dry bulb temperature. The Table below lists the selectable dry bulb values by potentiometer setting.

2.Reference Enthalpy - controlling the economizer cycle by sensing the outdoor air humidity. The Table below lists the selectable enthalpy values by potentiometer setting.

If the outside air enthalpy value is less than the selected value, the economizer is allowed to operate.

3.Comparative Enthalpy - By utilizing a humidity sensor and a temperature sensor in both the return air stream and the outdoor air stream, the unit control processor (RTRM) will be able to establish which conditions are best suited for maintaining the zone temperature, i.e. indoor conditions or outdoor conditions. The potentiometer located on the ECA is non-functional when both the temperature and humidity sensors are installed.

Table 52 - Potentiometer Setting

Potentiometer	Dry BuIb	Enthalpy
Setting	(°C)	(KJ/kg)

A	23*	63

B	21	58

C	19	53

D	17	51

*Factory Setting

ReliaTel™ Control Heating Operation

When the system switch is set to the "Heat" position and the zone temperature falls below the heating setpoint controlband, a heat cycle is initiated when the RTRM communicates ignition information to the Ignition module (IGN).

Ignition Module

Two Stage (IGN) runs self-check (including verification that the gas valve is de-energized). (IGN) checks the high-limit switches (TC01 & TC02) for normally closed contacts. With 115 VAC power supplied to the ignition module (IGN), the hot surface ignition probe (IP) is preheated for approximately

45 seconds. The gas valve (GV) is energized for approximately

7 seconds for trial for ignition, to ignite the burner.

Once the burner is ignited, the hot surface ignition probe (IP) is de- energized by the ignition module (IGN) and functions as the flame sensing device.

If the burner fails to ignite, the ignition module will make two more attempts before locking out. The green LED will indicate a lock out by two fast flashes. An ignition lockout can be reset by:

1.Opening for 3 seconds and closing the main power disconnect switch

2.By switching the "Mode" switch on the zone sensor to "OFF" and then to the desired position

3.Allowing the ignition control module to reset automatically after one hour.

58	RT-SVX20A-E4

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.