AIR TO WATER HOT WATER HEAT PUMP UNITS: BWH Series
Saving up to 70% of your hot water bill!
The BWH series units are available in three models ranging from 45 kW to 130kW and are ideal for hospitals, hostels, hotels, green houses or other applications that require large amounts of hot water. As opposed to conventional water heaters, the BWH series units are extremely safe and clean as they do not require boilers or furnaces and only make use of electricity. Their ingenuous design makes the surprisingly efficient and economical, able to save up to 70% of your hot water bill!
Easy and economical installation:
These 
self-contained units are assembled, internally wired and charged with refrigerant at the factory, and subjected to stringent test runs before delivery. Only water piping and mains power supply is required for on the spot installation, thus greatly reducing installation work and costs. On the whole the units are also compact and light, ensuring easy handling and installation.
Space-saving:
No machine room is required for installation and units can be installed on a roof or anywhere outdoors. As there is no boiler, fuel tank or cooling tower required, necessity for space and costs of installation is greatly reduced.
Anti-corrosion:
The hot water piping is fabricated from CU, which ensures a high degree of anti-corrosion. The stainless steel casing is treated against rust and is completely weather proof for outdoor installation.
New refrigerant circuit:
A large supply of hot water of up to 60°C (140°F) can be obtained in outdoor temperatures ranging from
as low as -SaC (23°F) WB to as high as 30°C (86°F) WB, due to the pole change fan motor and unique refrigerant circuit design, as well as the application of a new environmental-friendly refrigerant R134A. A newly developed compressor and a heat exchanger with tremendously efficient heat transfer tubes raise the COP of the unit.
Safe operating and easy maintenance:
A complete set of safety devices, fitted on the front of the unit, protects the unit from potential problems:
- Full set of indicating lamps
- Gauges for suction and discharge pressures
- Remote controller (optional)
Operation can easily be controlled from indoors by means of the remote controller, a slim, compact design that operates on a 24V safety circuit.
Compressor:
The scroll compressor used within the heat pumps is compact, light, highly efficient, powerful and durable. The compressor is held by springs in its casing to minimize vibration, while special vibration isolation rubber pads reduce vibration transfer to a minimum. A complete set of safety devices such as over-current relay, compressor thermal protector encased in the motor coil, high pressure switch, and crankcase heater are equipped, ensuring a longer life-cycle and problem-free operation.
Heat pump coaxial coils
Condenser:
Heat Exchanger:
The heat exchanger on the water side is of coaxial type, made from seamless carbon steel tube for outer tube and twisted copper tube for inner tube. Comparing to other smooth tube-in-tube heat exchangers, the configuration of a spiral twisted tube creates a two-counter-directionai flowing pattern, with a hot and cold side, ensuring the highest heat transferring efficiency. Its other advantages include its compactable size, adaptability, durability and leakage protection.
Evaporator:
The evaporator is cut In waffle fins, in a louver shape so as to increase heat transfer co-efficiently. Furthermore, Hi-X internal screw thread tubes, of which the internal surface has been modified by serration, are used for additional efficiency.
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