Introduction

1.0INTRODUCTION

The Envirosource Module is an accessory to the Process Chiller, for use on systems that circulate water and/or glycol solutions that require an isolated loop from the emergency water source. With the heat exchanger providing fluid separation, the Envirosource automatically switches to the emergency water source on a high fluid temperature alarm. Additionally, the module automatically switches to standby pump operation (with interlock to shut down the Process Chiller pump) on a loss of flow alarm.

The Envirosource Module is available in 208/230/460V, single-phase and three-phase, 60 Hz configu- rations. This module is a pre-piped and wired assembly that is encased in an almond colored, powder coated and baked cabinet. It consists of a copper brazed stainless steel heat exchanger, stainless steel pump, copper piping, RCM4 alarm monitor, adjustable time delay relays, high temperature thermo- stat, cooling solenoid valve, check valve and flow switch. It also includes a manual ball valve and dou- ble-check back-flow preventer on the city water line.

The integral RCM4 alarm monitor has a local display of normal operation, standby pump and standby cooling, “on” LED. Terminal strips are included for two optional alarms (customer supplied dry con- tacts) and for common alarm output (dry contacts, NC/NO/COM).

Table 1 Model numbers for minimum application flow

Model #

Range (gpm)

 

 

ENV05G-_00

0.3 - 1.1

 

 

ENV10G-_00

3.7 - 13.3

 

 

ENV20G-_00

3.7 - 13.3

 

 

The Process Chiller is modified with a bypass line to permit water to flow around the chiller’s pump when the standby pump in the Envirosource Module is operating. This bypass line runs from the pump suction line to the pump discharge line and includes a ball valve and check valve (see Figures 1 and 2).

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Emerson 1.5 TO 10 TONS, 60HZ, ENV10G, ENV20G user manual Introduction, Model numbers for minimum application flow
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ENV10G, 1.5 TO 10 TONS, 60HZ, ENV20G specifications

The Emerson ENV20G is an advanced HVAC solution designed for commercial and industrial applications, offering high efficiency and reliability for various cooling needs. With a capacity range of 1.5 to 10 tons, this unit is engineered to perform optimally at 60Hz, making it an ideal choice for numerous environments.

One of the standout features of the ENV20G is its variable speed technology, which allows for precise control of airflow and temperature. This technology not only enhances comfort but also significantly reduces energy consumption compared to traditional fixed-speed units. The inverter-driven compressor adjusts its speed based on cooling demand, leading to improved efficiency and lower operational costs.

The ENV20G is built with a robust construction designed to withstand the rigors of commercial use. The unit is equipped with high-quality insulation, which minimizes noise levels and energy loss. Its compact design makes it suitable for installations in limited spaces while still providing powerful cooling performance.

Another key characteristic of the ENV20G is its advanced control systems, which enable users to monitor and manage the system remotely. This feature is particularly beneficial for facilities managers who require constant oversight of HVAC performance and efficiency. Integration with building management systems allows for streamlined operations, optimizing both comfort and energy savings.

In addition, the UNIT utilizes environmentally friendly refrigerants, aligning with contemporary sustainability practices. The focus on eco-friendly solutions not only contributes to reduced greenhouse gas emissions but also ensures compliance with regulations aimed at protecting the environment.

Maintenance of the ENV20G is straightforward, thanks to its user-friendly design. Access panels are strategically placed to facilitate easy servicing, reducing downtime and maintenance costs. This translates into enhanced reliability and extended lifespan for the unit.

Overall, the Emerson ENV20G stands out in the market for its blend of innovative technology, high efficiency, and practical design. It serves as an excellent solution for businesses seeking to optimize their cooling systems while maintaining environmental responsibility. Whether deployed in offices, hospitals, or manufacturing facilities, the ENV20G guarantees superior performance and comfort all year round. With Emerson’s commitment to quality and innovation, this unit is poised to set new standards in the HVAC industry.
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