Commercial Air-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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Commercial Air-to-Water Heat Pump for Heating & Hot Water

Applied range: DHW, floor heating, radiator heating, fan coil heating
Special compressor: specially designed for heat pump water heater
Unit runs or stop automatically according to water temperature
Connectivity, flexibility and serviceability enabled by smart controller
Electric expansion valve regulates the flow of refrigerant precisely
Air exchanger(Fins-coil) with hydrophilic coating
Intelligently & automatically judge the frosting degree & accurately defrost
Modbus RS485, BACnet communication interface
Automatic prevent freezing in the winter
Water exchanger: tube in tube heat exchanger, Internal spiral design, high thermal efficiency and effective to prevent scaling

Overview

Wide Range of Applications

Not only do Withair® heat pumps offer economical heating of residential and commercial settings, they can also provide a total solution for domestic heating and hot water supply. Connecting solar collectors to the heat pump system further increases efficiency and savings.
Energy Efficiency

Withair® advanced heat pump and inverter technologies deliver optimum energy efficiency.
Quiet Operations

Unique designs, including inverter-driven compressors and natural convection heat distribution, ensure quiet operation of Withair® indoor and outdoor units.
Modular Control Design

Units installing combine freely, one controller can control maximum 16 pcs units, and the quantity of running compressors will be auto adjusted according to water temperature changing.
Maximize System Performance by Deluxe Controls

The smart electronic controls are unique to Withair’s equipment. Designed for enhanced component protection and optimal system performance, the microprocessor board is factory-wired and ready for field installation. Optional advanced connectivity kit including connectivity to any BMS on Site.

Control features include: Reversing valve coil; Compressor protection; Compressor delay on start; Random start delay; Anti-short cycle timer; Brown-out protection; Low pressure time delay; Low and high pressure switches.

Models

co Specifications	WFRS-20E2M	WFRS-42E2M	WFRS-72E2M	WFRS-86E2M
Heating Capacity (kW)	20.0	42.0	72.0	86.0
Rated Hot Water Output (L/h)	428	900	1560	1880
Hot Water Up To (℃)	60	60	60	60
Compressor	Hermetic Scroll	Hermetic Scroll	Hermetic Scroll	Hermetic Scroll
Voltage	380～415	380～415	380～415	380～415
Frequency	50 and 60	50 and 60	50 and 60	50 and 60
Refrigerant	R410A	R410A	R410A	R410A
COP	4.55	4.59	4.57	4.56
Modbus RS485, BACnet communication interface	Option	Option	Option	Option

/ co EVI Version Specifications	WFRS-22E2PM	WFRS-45E2PM	WFRS-76E2PM	WFRS-92E2PM
Capacity (kW)	22.0	45.0	76.0	92.0
Rated Hot Water Output (L/h)	471	964	1671	2013
Hot Water Up To (℃)	65	65	65	65
Compressor	Hermetic Scroll	Hermetic Scroll	Hermetic Scroll	Hermetic Scroll
Voltage	380～415	380～415	380～415	380～415
Frequency	50 and 60	50 and 60	50 and 60	50 and 60
Refrigerant	R410A	R410A	R410A	R410A
COP at +20℃	4.85	4.90	4.92	4.88
COP at -12℃	2.72	2.74	2.74	2.75
COP at -20℃	2.33	2.35	2.36	2.35
Modbus RS485, BACnet communication interface	Option	Option	Option	Option

Factory Installed Options

Unit Options

Controls Options

Electrical Options

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