CVC Direct - high efficiency heat recovery ventilation from Ubbink


			Breath Easy with a high efficiency heat recovery ventilation from Ubbink

Ubbink HRV systems use a counter-flow heat exchanger to recover up to 95% * of the heat from stale air extracted from the wet rooms of house. Incoming air passes next to the outgoing air but they do not mix. Fresh incoming air is filtered to reduce the level of dust and pollen entering the house.

The Ubbink range of high efficiency units are designed to use rigid ducting but can, of course, be used with both semi rigid or flexible ducting. The Ubbink range is made and tested in the Netherlands, and is probably the most efficient range of heat recovery units on the market (quoting from Ubbink). It has a Coefficient of Performance of (CoP) 10 -15.

CoP is a term normally used with heat pumps and is a measure of efficiency, but can equally apply to heat recovery units. It means that the HRV unit will recover 10 to 15 times more energy than it uses. i.e. In using 1kW of electricity, it will recover at least 10kW of heat. The figure for the CoP will vary owing to a number of factors; such as the difference in temperature between incoming and exhaust air, humidity and speed of air flow.

In short a Ubbink heat recovery system will:-

provide a clean draught-free environment
improve indoor air quality
provide controllable ventilation
supply energy positive ventilation for maximum efficiency
operate quietly
recover up to 95% * of heat from extracted air to warm fresh incoming air
are environmentally friendly and are a recommended option in Building Regulations Part L 2006
comply with Building Regulations Part F 2006 for domestic dwellings

There are three models of HRV available from Ubbink depending on the size of the house.


		The HR Medio and HR Grande models provide high efficiency heat recovery ventilation for small to large houses. Both models are powered by two vibration-free low noise EC/DC motors for quiet and cost effective operation. The sophisticated electronic controls offer 3 variable speed settings which can be adjusted from the control panel. The standard 3 speed switch includes a filter change and fault indicator. The HR Medio & HR Grande can also be used with a range of sensors including humidistats, timers and PIR detectors. Both models have an integral condensate drain for the safe and effective removal of condensation.



These units can easily be installed into lofts, utility rooms or cupboards, and wall-mounted using the brackets supplied. The constant velocity motors mean that it is not necessary to balance the incoming and outgoing air volumes as the unit sets them automatically. Low resistance ducting, also available from CVC Direct, should be used to minimise the power consumption. The units require very little in the way of maintenance: simply remove and clean the filters every two months or as necessary. The filters should be replaced annually and the heat exchanger cleaned every three years. If installed in a cold loft the unit should be enclosed in a thermal jacket and all ducting should be insulated.



	Options & dimensions: Units are available with a factory fitted summer by-pass, so fresh filtered air can be introduced without being heated. Compact, Medio and Grande can be supplied either left or right handed Medio and Grande can be supplied in various combinations with connections at the top and / or bottom of the unit Click here for more details and dimensions

Specification	HR Medio			HR Grande
	High	Medium	Low	High	Medium	Low
Air flow rate (m3/h) factory default settings	225	150	100	325	200	100
Sound power level (dB [A]@3m):
Break out	49	41	34	54	46	34
Extract air duct	41	36	32	47	40	32
Supply air duct	64	57	52	69	62	52
Power consumption (W)	74-112	38-52	24-31	123-175	55-67	21-23
Material	Powder-coated steel casing
Colour	Cream and blue / red
Weight (kg)	31			32
Maximum air flow rate setting	300m3/h			400m3/h
Maximum duct resistance	150pa at 300m3/h			150pa at 400m3/h

Control switch

Heat exchanger

	Click here to download a copy of the installation guide and operating instructions for the HR Medio and HR Grande Installation & Operating instructions

The HR Compact is the smallest model in the range with a capacity of 180 cubic metres per hour and still manages to recover up to 95% of heat from the exhaust air. In virtually every other respect the Compact is the same as the Grande and Medio except for its size.

Click here for dimensions

Specification	HR Compact
	High	Medium	Low
Air flow rate (m3/h) factory default settings	180	100	50
Sound power level (dB [A]@3m):
Break out	49	41	34
Extract air duct	41	36	32
Supply air duct	64	57	52
Power consumption (W)	74-112	38-52	24-31
Material	Powder-coated steel casing
Colour	Cream and blue
Weight (kg)	25
Maximum air flow rate setting	180m3/h
Maximum duct resistance	150pa at 180m3/h


	Last but not least is the HRVP 400 which has all of the features of the above two HRV models and, for greater versatility, air inlets and outlets which can be rotated through 90 degrees (see diagram below).

Specification	HRVP 400
	High	Medium	Low
Air flow rate (m3/h) factory default settings	400	250	100
Sound power level (dB [A]@3m):
Extract air duct	51	42	32
Supply air duct	64	56	43
Power consumption (W)	241	100	31
Material	Polypropylene casing fire resistant to class B1/B2
Weight (kg)	32
Maximum air flow rate setting	400m3/h
Maximum duct resistance	150pa at 400m3/h

	* Measured in accordance with Netherlands standard NEN 5128 at the output and input points of the heat recovery unit. The amount of heat recovered from the exhaust air depends on a number of factors including the air flow rate, the volume of water vapour in the air and resistance in the system. The temperature of the return air will also depend on duct runs and the level of insulation. As a general guide in normal operating conditions a high efficiency heat recovery system achieving 95% under NEN 5128 would be expected to recover a minimum of 80% of the heat from the exhausted air.

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