Large Size Horizontal and Vertical 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 Horizontal & Vertical Water Source Heat Pumps

Capacity Range: 5 to 40 tons, 50 and 60 Hz
Refrigerant: R-410A, R-454B
Compressor Type: Hermetic Scroll

Superior comfort
Low life cycle costs
Better sustainability
Improve Indoor Air Quality
Outstanding energy efficiency
Ultra-low noise, integrated controls
Multiple configuration options for flexibility
Microprocessor controls with optional BAS interfaces
Reliable compressor maximizes performance & reliability
Connectivity, flexibility and serviceability enabled by smart controller
Smart microchip control, LCD user interface, capable of one-key startup

OVERVIEW
MODELS
OPTIONS
RESOURCES
SERVICES
RELATED PRODUCTS

Overview

Geothermal Efficiency with Added Value

Add water-source heat pump energy efficiency to the durability and reliability of Withair’s large units for greater building-wide comfort. In capacities up to 40 tons, Large Water Source Heat Pumps offer HVAC solutions for a variety of commercial applications including: Office buildings, Schools, Hotels, Apartments, condos, etc.
Optimize Performance with Connected Controls

Operation with smart microprocessor controls includes an optional Modbus Communications Interface or BACnet® Communications Interface to communicate directly to the Building Automation System (BAS) through an open protocol.
Customize WSHP to address the demands of your commercial project

We continues to provide the highest standards in quality and reliability, comfort, ease of service, and the performance. Choose from many factory-installed options to customize the system. We offer a color touchscreen human interface panel that enables more intuitive commissioning, troubleshooting and preventative maintenance, with additional benefits for greater application flexibility.

Customers demand products that provide exceptional reliability, meet stringent performance requirements, and are competitively priced. our Water Source Heat Pump features cutting edge technologies: reliable compressors, smart controls, computer-aided run testing. So whether you’re the contractor, the engineer or the owner, you can be certain our products are built to meet your needs.
Choose a water-source configuration that best meets your efficiency goals

Withair’s Large Water Source Heat Pumps can be configured for geothermal, boiler/cooler or hybrid applications, in closed or open loops with ground-source or surface water. And because units can be installed in rooftop, the entire system is customizable, connectable, easy to install and service.
Optional Waterside Economizer System

If the water-source system design contains an economizing coil option, the moderate temperature loop water circulated through a core water source system can provide an inexpensive means to satisfy room comfort without operating the water source heat pump's compressor.

During economizer mode, fluid enters the unit, and passes by a water temperature sensing bulb. This temperature sensing bulb determines whether the two position, three-way valve will direct the water through the waterside economizing coil, and to the heat pump condenser, or through the condenser only. If the water temperature is 55℉(12.8℃) or less, fluid will flow into the economizing coil, while simultaneously halting mechanical operation of the compressor. Mechanical cooling will continue on a call for second stage from the thermostat.

Models

Specifications	W01R2-175H(V)	W01R2-210H(V)	W01R2-250H(V)	W01R2-300H(V)	W01R2-350H(V)	W01R2-400H(V)	W01R2-520H(V)	W01R2-680H(V)	W01R2-1400H(V)
Capacity (Ton)	5.0	6.0	7.1	8.6	10.0	11.5	15.0	20.0	40.0
Compressor	Scroll	Scroll	Scroll	Scroll	Scroll	Scroll	Scroll	Scroll	Scroll
Evaporator	Plate	Plate	Plate	Plate	Plate	Shell & Tube	Shell & Tube	Shell & Tube	Shell & Tube
Condenser	High Efficiency	High Efficiency	High Efficiency	High Efficiency	High Efficiency	High Efficiency	High Efficiency	High Efficiency	High Efficiency
Voltage	380, 230	380, 460, 230	380, 460, 230	380, 460, 230	380, 460, 230	380, 460, 230	380, 460, 230	380, 460, 230	380, 460, 230
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
Refrigerant	R-410A, R-454B	R-410A, R-454B	R-410A, R-454B	R-410A, R-454B	R-410A, R-454B	R-410A, R-454B	R-410A, R-454B	R-410A, R-454B	R-410A, R-454B
ECM fan	Option	Option	Option	Option	Option	Option	Option	Option	Option
Split Version	Option	Option	Option	Option	Option	Option	Option	Option	Option

Factory Installed Options

Unit Options

ECM Fan
Split Version
Wide Ambient Operation
Frost Prevention Kit
Electric Heaters
Expansion Tank
Vibration Isolators
Sound Attenuation
Suction Shutoff Valves
Liquid Line Solenoid Valve
Evaporator Inlet Strainer
Double Evaporator Insulation
Complete Coat Condenser Coil
Corrosion Protected Condenser Coil
Metal Mesh for Condenser Coil Protection
Partial Heat Recovery or Total Heat Recovery
Integrated Pump Packages
Condensate Overflow Switch
High Efficiency Inverter Compressor
High Efficiency EC Fan
High Fault Short Circuit Current Rating
Microchannel Condenser Coil
Stainless Steel Heat Exchanger
Stainless Steel Frame
Flanged Water Connection Kit

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

Quick Start and Fast Loading
Circuit Breaker
High Short Circuit Current Rating
Ground Fault Protection
115V Convenience Outlet
Power Connections
Multi-Point Power with Disconnect Switch

Resources

Name	Size	Download
Withair® Packaged Rooftop & Split DX Systems-Line-Card.pdf	550KB	Download
Withair® Solutions Offering-Line-Card.pdf	4.00MB	Download
Withair® HVACR SYSTEM SOLUTIONS OFFERING_2025 Version.pdf	3.54MB	Download
Withair® Water-Cooled-Chillers-Line-Card.pdf	483KB	Download
Withair® Air-Cooled-Chillers-Line-Card.pdf	679KB	Download
Withair® Air-Cooled-Heat Pumps-Line-Card.pdf	721KB	Download
Withair® Ground(Water)-Source-Heat Pumps-Line-Card.pdf	502KB	Download
Withair® Industrial Process Cooling & Heating Systems-Line-Card.pdf	506KB	Download
Withair® Air-Side-Products-Line-Card.pdf	1.69MB	Download