Key Features

Water to Water heat pumps are designed to extract energy from a variety of water sources. Like the ground, water provides a relatively constant heat source. Water sources can vary from ground water to lakes,
streams and the ocean.

Energy can even be harnessed from a building’s chilling system. In this application, apart from its primary purpose to heat water, energy is drawn from the chilled water circuit by the heat pump, returning cooler water back to the chiller plant. 

As the heat pump has effectively pre-cooled the water entering the chiller, the chiller’s energy requirement is substantially reduced. In fact up to 80% of the heating output capacity can be returned back to the chiller plant in the form of pre-chilled cooling capacity.

Water to Water Heat Pump Specifications

Accent Air Water to Water Heat Pump

MODEL HWW20-3 HWW25-3 HWW30-3 HWW380-3 HWW50 HWW60-3
Electrical Input Three Phase
Voltage 380-415 Volts / 50 Hz
Amps Per Phase 12 Amps 20 Amps 25 Amps 30 Amps
Min. Circuit Size 20 Amps 25 Amps 40 Amps 63 Amps
Refrigerant R407C
  Heating Evap. Side Heating Evap. Side Heating Evap. Side Heating Evap. Side Heating Evap. Side Heating Evap. Side
Nominal Heating capacity 20.5 kW 16.7 kW 21.4 kW 17.4 kW 25.3 kW 20.3 kW 33.7 kW 27.5 kW 44.8 kW 34.5 kW 58.4 kW 47.3 kW
Power input 5.0 kW 5.0 kW 5.2 kW 5.2 kW 6.1 kW 6.1 kW 7.6 kW 7.6 kW 10.3 kW 10.3 kW 13.4 kW 13.4 kW
COP 4.1 3.34 4.11 3.35 4.15 3.33 4.44 3.62 4.35 3.35 4.36 3.53
Noise Level 59 dBa @ 3 m 59 dBa @ 3 m 59 dBa @ 3 m 59 dBa @ 3 m 59 dBa @ 3 m 59 dBa @ 3 m
Technical Data
  Compressor
Make Copeland
Type Scroll
Number per Unit 1
FLA (Full Load Amp) 12.1 Amps 15.0 Amps 17.7 Amps 22.3 Amps 30 Amps
Voltage / Phase 380-415 / 3
Pole/RPM 2/2,900
Heat Exchanger (Water Side)
  Condenser Evaporator Condenser Evaporator Condenser Evaporator Condenser Evaporator Condenser Evaporator Condenser Evaporator
Type of Water Tube Copper
Design Shell in Tube
Flow Rate Excl. By Pass 0.8 L/s 0.8 L/s 1.0 L/s 0.8 L/s 1.6 L/s 0.5 L/s 1.5 L/s 1.3 L/s 1.8 L/s 1.6 L/s 2.4 L/s 2.3 L/s
Max. Outlet Water Temp 61°C N/A 61°C N/A 61°C N/A 61°C N/A 61°C N/A 61°C N/A
Design Pressure Drop 80 kPa
Max. Operating Pres. 2,450 kPa
General Information
Water Connections 32mm Copper 50mm Copper
Drain 20mm PVC
Cabinet Construction 1.2mm Stucco Aluminium
Approx. shipping weight 100 kg 120 kg 170 kg 230 kg 300 kg
Size L x W x H 900mm x 700mm x 625mm 1450mm x 700mm x 680mm 1450mm x 700mm x 680mm 1450mm x 700mm x 680mm 1750mm x 800mm x 825mm 1750mm x 800mm x 825mm

 

Accent Air Pool Water to Water

MODEL HWWP20-3 HWWP25-3 HWWP38-3 HWWP50-3 HWWP60 HWWP80-3 HWWP100-3
Electrical Input Three Phase
Voltage 380-415 Volts / 50 Hz
Amps Per Phase 12 Amps 20 Amps 25 Amps 30 Amps 38 Amps 45 Amps
Min. Circuit Size 20 Amps 25 Amps 40 Amps 63 Amps 63 Amps 63 Amps
Refrigerant R407C
  Heating Evap. Side Heating Evap. Side Heating Evap. Side Heating Evap. Side Heating Evap. Side Heating Evap. Side Heating Evap. Sid
Nominal Heating capacity 20.9 kW 17.5 kW 22.0 kW 18.4 kW 34.4 kW 28.8 kW 45.8 kW 38.3 kW 59.9 kW 49.9 kW 68.9 kW 57.6 kW 91.6 kW 76.5 kW
Power input 4.5 kW 4.5 kW 4.7 kW 4.7 kW 6.9 kW 6.9 kW 9.4 kW 9.4 kW 12 .1 kW 12.1 kW 13.9 kW 13.9 kW 18.8 kW 18.8 kW
COP 4.62 3.87 4.64 3.88 4.97 4.16 4.87 4.07 4.95 4.12 4.95 4.14 4.87 4.07
Noise Level 59 dBa @ 3 m
Technical Data
  Compressor
Make Copeland
Type Scroll
Number per Unit 1 2
FLA (Full Load Amp) 12.1 Amps 17.7 Amps 22.3 Amps 30 Amps 17.7 Amps (Each) 22.3 Amps (Each)
Voltage / Phase 380-415 / 3
Pole/RPM 2/2,900
Heat Exchanger (Water Side)
  Condenser Evaporator Condenser Evaporator Condenser Evaporator Condenser Evaporator Condenser Evaporator Condenser Evaporator Condenser Evaporator
Type of Water Tube Titanium Copper Titanium Copper Titanium Copper Titanium Copper Titanium Copper Titanium Copper Titanium Copper
Design Co-Axial
Flow Rate Excl. By Pass 2.8 L/s* 0.8 L/s 2.8 L/s* 1.0 L/s 2.8 L/s* 1.4 L/s 2.8 L/s* 1.8 L/s 2.8 L/s 2.4 L/s 2.8 L/s* 2.7 L/s 2.8 L/s* 3.6 L/s
Max. Outlet Water Temp 45°C N/A 45°C N/A 45°C N/A 45°C N/A 45°C N/A 45°C N/A 45°C N/A
Design Pressure Drop 70 kPa 80 kPa 70 kPa 80 kPa 70 kPa 80 kPa 70 kPa 80 kPa 70 kPa 60 kPa 70 kPa 80 kPa 70 kPa 80 kPa
Max. Operating Pres. 300 kPa 2,450 kPa 300 kPa 2,450 kPa 300 kPa 2,450 kPa 300 kPa 2,450 kPa 300 kPa 2,450 kPa 300 kPa 2,450 kPa 300 kPa 2,450 kPa
General Information
Water Connections 40mm PVC/32mm Copper 80mm PVC/65mm Copper
Drain 20mm PVC 20mm Aluminium 20mm PVC
Cabinet Construction 1.2mm Stucco Aluminium
Approx. shipping weight 100 kg 120 kg 170 kg 230 kg 300 kg 400 kg 500 kg
Size L x W x H 1450mm x 700mm x 680mm 1750mm x 800mm x 825mm 2200mm x 1610mm x 2020mm

HIGH EFFICIENCY HEAT PUMP WATER HEATING

Options

Accent Water to Water Heat Pumps are available with a wide range of options in both heat pump design and component selection. As standard all Accent heat pumps use Copeland Scroll compressors. The superior scroll compressor technology of Copeland is employed to provide a quieter unit with the reliability and efficiency expected of a superior commercial product.

Component Options include:

Single wall or double wall vented type Heat Exchangers in Shell in Tube or Coaxial tube in tube design. The Heat Exchanger is constructed from copper when used for hotwater heating, and titanium for pool heating. Accent offer a 10 year warranty on Titanium Heat exchangers.*

Heat Pump cabinets can be of Marine Grade Aluminium, stainless steel or zinc annealed powder coat.

Heating Only Units

The heating only heat pump provides high efficiency water heating, giving maximum operating cost reduction and reliability.

Heating & Cooling

he reverse cycle heat pump provides water heating and cooling. This unique ability is often used at resorts in tropical locations for maintaining pool water at a comfortable swimming temperature all year round. In the cooler months of the year the heat pump will be in heating mode and the warmer months the unit will revert to reverse cycle model and chill the pool. This reverse cycle capability is also typically used in Ground to Water heat pumps providing space heating and cooling to the home.

Twin Heat Exchanger

he twin heat exchanger model provides automated heating between two separate tasks from the single unit. Most commonly, this approach provides efficient split temperature heating between pool and spa.

Plunge Pool

The Accent heat pump can uniquely provide cooling to one application while rejecting heat to another. This is most commonly used for resorts, day spas and sports training centres to provide hot and cold plunge pools.

Brochures

Accent Air Commercial Heat Pump Range: Download

Case Studies

Middelburg Mine - South Africa: Download