Large Size Ground Water Source Heat Pumps - Withair® Heating and Cooling, Air Conditioning, Heat Pump, Chiller, Industrial Process Cooling & Heating Systems, and Indoor Air Quality

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Large Size Screw Compressor Ground(Water) Source Heat Pumps

Large Size Screw Compressor Water Source Heat Pumps

Capacity Range: 35 to 422 tons, 50 and 60 Hz
Refrigerant: HFC-R134a and R407C
Compressor Type: Semi-hermetic Screw

High Flexibility
High Reliability
Low operating cost
Infinite capacity control
Low environmental impact
Heat recovery function for hot water as option
Microprocessor controls with optional BAS interfaces
Advanced semi-enclosed twin-rotor screw type compressor
Superior performance of high-efficiency shell & tube heat exchanger
Multilevel (0-25% to 50% & 75% - 100%) and continuous control as option
Unit adopts PLC control technology, "a key start" and automatic operation

OVERVIEW
MODELS
OPTIONS
RESOURCES
SERVICES
RELATED PRODUCTS

Overview

Outstanding Efficiency,
Lower Operating Costs

Withair’s Commercial Water Source Heat Pumps can be applied to geothermal closed-circuit or open-well loops, or on a traditional boiler/tower loop system. These systems offer benefits ranging from low cost installation to the highest energy efficiency available in the market today.
Infinite Capacity Control

Cooling capacity control is infinitely variable by means of a single screw semi-hermetic compressor controlled by microprocessor system. Each unit has infinitely variable capacity control from 100% down to 25%. This modulation allows the unit to perfectly match the cooling or heating load and consequently providing without any leaving water temperature fluctuation. This water temperature fluctuation is avoided with a stepless control.

With a compressor load step control in fact, the compressor capacity, at partial loads, will be too high or too low compared for example to the building cooling load. The result is an increase in energy costs, particularly at the partload conditions at which the unit operates most of the time.

Units with stepless regulation offer benefits that the units with step regulation are unable to match: the ability to follow the system energy demand at any time and the possibility to provide steady outlet water temperature without deviations from the setpoint.
Application Flexibility

The heat pumps can satisfy a large variety of applications not limited to traditional comfort cooling and heating but industrial process, brine water, ice storage and high temperature heat pump (up to 75°C).

This range is the result of careful design, aimed to optimize the energy efficiency of the units, with the objective of bringing down operating costs and improving installation profitability, effectiveness and economical management.
Wide Range of Applications

The Withair’s Large Capacity Water Source Heat Pumps are designed for all the conveniences of chilled/hot water, air-conditioning systems, from reducing your facility’s carbon footprint, to cutting operating costs, energy-efficient units are tailored to fit almost any application. especially for hotels, offices, malls, hospitals and process cooling/heating applications of modern manufacturing industries
Optimise Energy Efficiency,
High Flexibility and High Reliability

Withair's screw heat pump is a water to water heat pump reversible on water side standing out for its compactness and reliability.

With modulating valve, low operating cost and high flexibility with infinite capacity control can be achieved. Also, with the careful design that aimed to optimise energy efficiency and high reliability, this product is the ideal choice for indoor installation or retrofit projects.
Compactness

The heat pumps is designed to achieve the smallest possible footprint making this product the ideal solution to allow easy indoor installation for restricting spaces or refitting operations and easy transportation. Thanks to the stacked installation option, it is also possible to further reduce the installation space of two units.

Models

Single head system

Specifications	W01R2-130S1	W01R2-180S1	W01R2-230S1	W01R2-280S1	W01R2-350S1	W01R2-420S1	W01R2-470S1	W01R2-560S1	W01R2-620S1	W01R2-650S1	W01R2-740S1
Capacity (Ton)	35	51	66	80	99	120	134	160	176	185	210
EER (kW/kW)	4.80	4.72	4.85	4.96	4.83	4.81	4.80	4.76	4.77	4.86	4.97
COP (kW/kW)	4.56	4.60	4.55	4.70	4.61	4.59	4.51	4.45	4.46	4.56	4.63
Compressor	Screw	Screw	Screw	Screw	Screw	Screw	Screw	Screw	Screw	Screw	Screw
Evaporator	Shell & Tube	Shell & Tube	Shell & Tube	Shell & Tube	Shell & Tube	Shell & Tube	Shell & Tube	Shell & Tube	Shell & Tube	Shell & Tube	Shell & Tube
Condenser	Shell & Tube	Shell & Tube	Shell & Tube	Shell & Tube	Shell & Tube	Shell & Tube	Shell & Tube	Shell & Tube	Shell & Tube	Shell & Tube	Shell & Tube
Voltage	380, 460	380, 460	380, 460	380, 460	380, 460	380, 460	380, 460	380, 460	380, 460	380, 460	380, 460
Frequency	50 and 60	50 and 60	50 and 60	50 and 60	50 and 60	50 and 60	50 and 60	50 and 60	50 and 60	50 and 60	50 and 60
Refrigerant	R134a, R407C	R134a, R407C	R134a, R407C	R134a, R407C	R134a, R407C	R134a, R407C	R134a, R407C	R134a, R407C	R134a, R407C	R134a, R407C	R134a, R407C
Heat Recovery	Option	Option	Option	Option	Option	Option	Option	Option	Option	Option	Option
VSD Version	Option	Option	Option	Option	Option	Option	Option	Option	Option	Option	Option

Dual heads system

Specifications	W01R2-350S2	W01R2-465S2	W01R2-555S2	W01R2-700S2	W01R2-765S2	W01R2-835S2	W01R2-950S2	W01R2-1115S2	W01R2-1230S2	W01R2-1300S2	W01R2-1485S1
Capacity (Ton)	100	132	158	200	218	238	270	317	350	370	422
EER (kW/kW)	4.80	4.72	4.85	4.96	4.83	4.81	4.80	4.76	4.77	4.86	4.97
COP (kW/kW)	4.56	4.60	4.55	4.70	4.61	4.59	4.51	4.45	4.46	4.56	4.63
Compressor	Screw	Screw	Screw	Screw	Screw	Screw	Screw	Screw	Screw	Screw	Screw
Evaporator	Shell & Tube	Shell & Tube	Shell & Tube	Shell & Tube	Shell & Tube	Shell & Tube	Shell & Tube	Shell & Tube	Shell & Tube	Shell & Tube	Shell & Tube
Condenser	Shell & Tube	Shell & Tube	Shell & Tube	Shell & Tube	Shell & Tube	Shell & Tube	Shell & Tube	Shell & Tube	Shell & Tube	Shell & Tube	Shell & Tube
Voltage	380, 460	380, 460	380, 460	380, 460	380, 460	380, 460	380, 460	380, 460	380, 460	380, 460	380, 460
Frequency	50 and 60	50 and 60	50 and 60	50 and 60	50 and 60	50 and 60	50 and 60	50 and 60	50 and 60	50 and 60	50 and 60
Refrigerant	R134a, R407C	R134a, R407C	R134a, R407C	R134a, R407C	R134a, R407C	R134a, R407C	R134a, R407C	R134a, R407C	R134a, R407C	R134a, R407C	R134a, R407C
Heat Recovery	Option	Option	Option	Option	Option	Option	Option	Option	Option	Option	Option
VSD Version	Option	Option	Option	Option	Option	Option	Option	Option	Option	Option	Option

Factory Installed Options

Unit Options

Brine Version
Condenser Double Flanges Kit
Cu-Ni 90-10 Condenser Tubes
Condenser Four Passes
High-pressure Side Manometers
Low-pressure Side Manometers
Compressor Soundproof System
Double Pressure Relief Valve with Diverter
High Temperature Kit
Refrigerant Leak Detection
Stacked Installation
High Evaporator Leaving Water Temperature
Vibration Isolators
Rubber Antivibration Mounts
Evaporator Inlet Strainer
Double Evaporator Insulation
Partial Heat Recovery or Total Heat Recovery
Integrated Pump Packages
Condensate Overflow Switch
Stainless Steel Heat Exchanger
Stainless Steel Frame
Flanged Water Connection Kit
Container & Transport Kit
Anti-corrosion Cabinet and Structure Version

Controls Options

Modbus, BACnet Communications Interface
Withair® Wireless Components
Door Mounted User Display
Remote User Interface
Fault Detection & Diagnostics
Flow Switch
Remote Input
Remote Output

Electrical Options

Soft Starter
Compressor Thermal Overload Relays
Under/Over Voltage Control
Energy Meter
Capacitors for Power Factor Correction
Current Limit
Condenser Flow Switch
Compressor Circuit Breakers
Ground Fault Relay
High Short Circuit Current Rating
Ground Fault Protection
115V Convenience Outlet
Power Connections
Multi-Point Power with Disconnect Switch

Resources

Name	Size	Download
Withair® Water-Cooled-Chillers-Line-Card.pdf	606KB	Download
Withair® Air-Side-Products-Line-Card.pdf	270KB	Download
Withair® Ground(Water)-Source-Heat Pumps-Line-Card.pdf	786KB	Download
Withair® Air-Cooled-Heat Pumps-Line-Card.pdf	1.03MB	Download
Withair® Air-Cooled-Chillers-Line-Card.pdf	929KB	Download