Viessmann launch new ultraquiet air source heat pumps
Viessmann has introduced two new air source heat pumps, the Vitocal 200-A and Vitocal 222-A, which boast innovative noise-reduction technology. Both operate so quietly that they are suitable for densely built-up areas such as terraced housing estates, and both deliver high energy efficiency with low operating costs, according to Viessmann.
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With outputs of 2.3 to 11.8 kW, and with a reversible circuit within a single unit to enable switching between heating and cooling, the Vitocal 200-A and 222-A are identical except that the 222-A has an integrated 220 litre domestic hot water cylinder.
Both heat pumps feature Viessmann’s new “advanced acoustic design”. The company said this combines a sound-optimised fan, designed to harmonise the acoustic frequency range, with intelligent speed control to reduce airborne noise. “This effectively stifles the lower frequency sound of conventional heat pumps which can be perceived as disturbing, according to Viessmann, and the result is that the pumps are barely audible,” said the company. Noise pressure in night mode at a distance of three metres is 35 dB(A).
The Vitocal 200-A and 222-A are of compact monobloc design, with separate indoor and outdoor units connected by water pipes. The outdoor unit contains one or two fans, depending on power output. Maximum flow temperature is up to 60C when the temperature outdoors is as low as -10C.
The energy rating of both new Vitocal heat pumps is A++. The COP (coefficient of performance), according to the EN 14511 standard, is up to 5.0 (A7/W35) and up to 4.1 (A2/W35).
No minimum distance is required between the indoor and outdoor units, no refrigeration leak test is required because the cooling circuit is hermetically sealed, and no F-gas certificate is needed because the connecting pipes to the outdoor unit are filled with water.
These new heat pumps are also simple to operate, via the easy-toread Vitotronic 200 control unit, Vitoconnect web interface and free ViCare smartphone app.
Hugh Jones, Viessmann product manager, commented: “No one wants to look at an ugly heating appliance or hear it whirring away when they are sitting in their garden – or hear noise coming from a neighbouring garden. By addressing these issues inventively, we have produced two new heat pumps which are pleasing to the eye and so quiet that they can be installed right next to a neighbour’s property without causing problems.”