24 Volt Controls

All electrical controls and safety de- vices are factory wired, tested, and mounted in the unit. The control package includes:

θCompressor contactor

θ24 Volt transformer

θLockout relay

θCompressor run capacitor (1- phase units only)

θReversing valve coil (For heat pump only)

θFuse (for desuperheater)

A terminal strip with 1/4” fork con- nections will be provided for field thermostat control wiring. (See Fig- ure 3).

Safety Devices

Each Trane water-to-water unit con- tains safety devices to prevent com- pressor damage. These include:

Features

Controls

and

 

Benefits

 

Lockout

50 VA Transformer

24 VAC Contactor

Relay

 

Ground

Compressor

Run Capacitor

Low Voltage

High Voltage

2 Amp Fuse

(for use with 10 Pole Terminal

desuperheater Strip option)

Low Voltage

Thermostat

 

Figure 3: Controls

θLow pressure switch

θHigh pressure switch

θTemperature sensor (freezestat)

θInternal overload protection

Low Pressure Switch

The low pressure switch prevents compressor operation under low charge or in excessive loss of charge situations. This device is set to activate at refrigerant pressures of 35 psig when a 35 F low temper- ature detection thermostat is ap- plied. An optional 7 psig pressure switch is available when using a 20

Ftemperature low temperature de- tection thermostat.

High Pressure Switch

Low Temperature Detection Thermostat

The low water temperature detec- tion thermostat is provided to pro- tect the water-to-refrigerant heat exchanger from freezing. This de- vice prevents compressor opera- tion if leaving water temperature is below 35 F. An optional 20 F tem- perature thermostat may be applied for low water temperatures where an appropriate antifreeze solution is used.

Lockout Relay

When the safety controls are acti- vated to prevent compressor short cycling, the lockout relay (circuit) can be reset at the thermostat, or by cycling power to the unit.

Thermostat Hook-up

Low voltage and high voltage knockouts are provided in the top half of the unit. All control wiring to the unit should be 24 Volt.

(See Figure 4 for termination points).

For internal overload protection, Trane provides a high pressure switch. This de-energizes the com- pressor when discharge pressure become excessive.

24V Power

Compressor Reversing Valve

(energized in clg)

Figure 4: Typical thermostat termination points

5

Page 4 Page 6
Page 5
Image 5
Trane WSHP-DS-6 manual Features Controls Benefits
Page 4 Page 6

WSHP-DS-6 specifications

The Trane WSHP-DS-6, or Water Source Heat Pump - Design Series 6, is a highly efficient and versatile solution designed to meet the complex heating and cooling needs of commercial buildings. With a firm reputation for reliability and performance, the WSHP-DS-6 integrates advanced technologies to optimize energy consumption and enhance climate control.

One of the standout features of the WSHP-DS-6 is its exceptional efficiency ratings. The unit boasts a high Coefficient of Performance (COP) and Energy Efficiency Ratio (EER), ensuring that it delivers cost-effective heating and cooling while minimizing energy usage. This not only lowers operational costs but also contributes to reduced environmental impact.

The heat pump is equipped with a hermetically sealed scroll compressor, known for its durability and quiet operation. This technology allows for smooth operation under a variety of conditions, making the WSHP-DS-6 suitable for different environments. The compressor, combined with a robust heat exchanger, ensures optimal heat transfer, resulting in enhanced overall system performance.

Another notable characteristic of the WSHP-DS-6 is its compact design, which facilitates easy installation in a variety of settings, including tight spaces often found in urban environments. Additionally, the unit comes with advanced controls that allow for precise temperature management, ensuring the indoor environment remains comfortable year-round.

The WSHP-DS-6 also supports water heating capabilities, providing hot water on demand. This flexibility makes it a cost-effective solution for facilities that require both space heating and hot water supply, such as hotels, schools, and healthcare facilities.

Moreover, the unit features integrated zone control options, which enable the customization of heating and cooling for different areas within a building. By allowing targeted climate control, the WSHP-DS-6 enhances occupant comfort while further improving overall energy efficiency.

In terms of sustainability, the WSHP-DS-6 is designed to work effectively with environmentally friendly refrigerants, aligning with current regulations and promoting eco-friendly practices. This commitment to sustainability, combined with superior performance features, makes the Trane WSHP-DS-6 a top choice for building managers seeking reliable and efficient climate control solutions.

Overall, the Trane WSHP-DS-6 represents a perfect blend of technology, efficiency, and adaptability, making it an excellent investment for commercial property owners focused on sustainable building management.
Top Page Image Contents