Modular Water-to-Water Heat Pumps - Withair® Heating and Cooling, Air Conditioning, Heat Pump, Chiller, Industrial Process Cooling & Heating Systems, and Indoor Air Quality

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Modular Version Scroll Compressor Ground(Water) to Water Heat Pumps

Modular Version Ground/ Water to Water Heat Pumps

Capacity Range: 20 to 75 tons, 50 and 60 Hz
Refrigerant: R-410A, R-454B
Compressor Type: Hermetic Scroll

Compact & modular design
Water to Water reversible heat pump
SEER and EER up to 6.7 and 5.3 respectively
Low operating cost and extended operating life
Compressor soft start for reduced inrush current
Low sound configuration with optional acoustic enclosure
Compact design with highest kW/m2 ratio & quiet operation
The ideal solution for cooling & heating even in colder climates
High-efficiency scroll compressor with vibration mounting isolation
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

Compact & Modular Design

The innovative design makes the unit easy to carry and position within technical room occupying the minimum footprint. Compact design with modular conception that allows unit stacking reaching largest kW/m2 ratio on the market. Master/slave operation is provided as standard allowing to connect up to 24 units working as single system and control energy-regulation automatically.
Superior Control Logic

The unit controller provides an easy to use control environmental. The control logic is designed to provide maximum efficiency, to continue operation in unusual operating conditions and to provide a history of unit operation. One of the greatest benefits is the easy interface with Modbus RTU communications. Master/Slave control is available as standard.
Wide Operating Range

The extended operating range allows the unit to work in a wide range of cooling and heating operating temperatures (up to 55°C condenser leaving water temperature). Suitable to brine operation down to -10°C evaporator leaving water temperature (brine option provided as standard).
Plug & Play Installation

The units is conceived in order to be connected quickly to the plant. The quick connection are available as option.
Low Operating Cost and Extended Operating Life

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

The reversible heat pump meets all the possible request in terms of plant needs for comfort and process applications. The units can provide chilled water production and hot water production reversing on refrigerant side.

Partial recover version, total heat recovery version and hydronic version, with low or high pump head, are available on request.

Brine version - Allows the unit to operate down to -10°C leaving liquid temperature (antifreeze required). Recommended below +4°C.
Anti-corrosion Cabinet and Structure Version on Request

The cabinet is made of galvanized steel sheet and painted to provide a high resistance to corrosion or double wall polyurethane foam galvanized steel plate with anti-corrision coating . The base frame has an eye-hook to lift the unit with ropes for an easy installation. The weight is uniformly distributed along the profiles of the base and this facilitates the arrangement of the unit.

Models

Specifications	W01R2-75M	W01R2-120M	W01R2-160M	W01R2-265M
Capacity (Ton)	20	35	45	75
EER (kW/kW)	5.32	5.31	5.32	5.30
COP (kW/kW)	4.56	4.60	4.55	4.57
Compressor	Hermetic Scroll	Hermetic Scroll	Hermetic Scroll	Hermetic Scroll
Evaporator	Shell & Tube	Shell & Tube	Shell & Tube	Shell & Tube
Condenser	Shell & Tube	Shell & Tube	Shell & Tube	Shell & Tube
Voltage	380/415, 460	380/415, 460	380/415, 460	380/415, 460
Frequency	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
Heat Recovery	Option	Option	Option	Option
Variable Speed Version	Option	Option	Option	Option

Factory Installed Options

Unit Options

Frost Prevention Kit
Brine version
Expansion Tank
Vibration Isolators
Sound Attenuation
Compressor Sound Enclosure
Suction Shutoff Valves
Liquid Line Solenoid Valve
Evaporator Inlet Strainer
Double Evaporator Insulation
Partial Heat Recovery or Total Heat Recovery
Integrated Pump Packages
Condensate Overflow Switch
High Efficiency Inverter Compressor
High Fault Short Circuit Current Rating
Stainless Steel Brazed Evaporator & Condenser
Stainless Steel Frame
Hydronic Kit with single pump low or high lift option for evaporator and Condenser
Low Sound Configuration with optional acoustic enclosure
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