Hydronic heating and cooling systems have long set the industry standard for comfort and flexibility. Whether the application includes radiant heating, forced air fan coil units, domestic hot water heating or process heating/cooling loads, the EW Series can fit every application from the simple to the complex. Sophisticated microprocessor controls and state-of-the-art components ensure many years of virtually maintenance-free operation. The EW also can supply hot water for pools, spas and ice melt under sidewalks.
Because it doesn’t burn fossil fuels, the EW Series emits no harmful greenhouse gases, which are associated with global warming. No flames. No fumes. No odors. No danger from carbon monoxide. Less dust and better indoor air quality. The WaterFurnace EW Series is the best in the business.
DESIGN FEATURES:
Operating Efficiencies
- Environmentally responsible R-410A refrigerant.
- Optional desuperheater generates hot water at considerable savings while improving overall system efficiency.
- High-stability bi-directional expansion valve provides superior performance.
- Efficient scroll compressors operate quietly.
- Oversized coaxial tube water-to-refrigerant heat exchanger increases efficiency.
- Designed to operate with load temperatures of 30°F to 130°F (30-100 EST, 50-130 ELT).
- Source side flow rates as low as 1.5 GPM/ton for well water (50°F min. EWT).
- Dedicated heating, dedicated cooling and heat pump models available.
- Modularized unit design and master/slave controls for optimum capacity matching and staging.
- Stackable for space conservation.
- Compact size allows installation in confined spaces.
- Front or rear plumbing connections.
- Control Panel location is reversible.
- Heavy-gauge steel cabinets are finished with durable poly paint for long lasting beauty and service.
- All refrigerant brazing is performed in a nitrogen atmosphere.
- All units are deep evacuated to less than 150 microns prior to refrigerant charging.
- All joints are helium leak-tested to ensure annual leak rate of less than 1/4 ounce.
- Evaporator heat exchanger, refrigerant suction lines, desuperheater coil and all water pipes are fully insulated to reduce condensation problems in low temperature operation.
- Sound attenuation features: isolation mounted compressor and high-density, weighted sound blanket.
- Safety features include high and low-pressure refrigerant controls to protect the compressor; hot water high-limit desuperheater pump shutdown.
- Optional desuperheater with externally mounted pump and water heater plumbing connector.
- Closed loop, source-side, circulating pump kit.
- Closed loop, load-side, circulating pump kit.
| Model | Source Side | Load Side | Heating Capacity | ||||||
|---|---|---|---|---|---|---|---|---|---|
| EWT | GPM | Pressure Drop1 |
EWT | GPM | Pressure Drop1 |
Mbtu | kW | COP | |
| EW020 | 32°F | 6.0 | 5.1 | 104°F | 3.0 | 1.8 | 21.9 | 6.4 | 3.0 |
| EW030 | 8.0 | 6.2 | 5.0 | 1.4 | 29.0 | 8.5 | 2.9 | ||
| EW042 | 11.0 | 7.2 | 7.0 | 2.5 | 44.9 | 13.2 | 2.9 | ||
| EW060 | 14.0 | 9.9 | 11.0 | 4.2 | 59.2 | 17.4 | 2.8 | ||