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2.Instructions for the User
This chapter describes how you should use the
Congratulations, you are now the owner of the
the heat recovery unit from Zehnder Com- fosystems. We wish you every comfort.
ing the summer months. Admitting the cool night air on warm days allows the room temperature in thehometobereduced.Thebypassfunctionsauto- matically.You simply have to set your comfort tem- perature. See section 2.3.2 for further information. The
2.1Definition of Terms
The
•Balanced ventilation.
•Heat recovery.
•Bypass for free cooling.
•Frost protection.
•Chimney sweep control.
•Moisture recovery (option).
Theseterms/propertiesaredescribedinmoredetail briefly in the following sections.
Ensure that the comfort temperature in winter is not set below the tem- perature you prefer.
If the comfort temperature in winter is below the preferred temperature, it is possible for the heating to be switched on with the bypass open. That is a waste of energy.
2.1.1Balanced Ventilation
Ensure that these gaps are not covered by, for example, rubber door seal strips or
2.1.4 Frost Protection
The
-when there is a risk of frost - temporarily reduces the supply of outside air so that condensa- tionintheexchangercannotfreeze.Apreheatercan also be installed in the
2.1.2 Heat Recovery
Apartfromensuringtherightbalancebetweensup-
2.1.3 Bypass for Free Cooling
Apart from transferring heat from the exhaust air to the fresh, generally cooler outside air, the MTD- ERV 350 also offers the possibility of discharging the warmer exhaust air directly into the atmosphere without passing through the heat exchanger.This is madepossiblebytheintegralbypass.Thebypassis an additional circulating air duct that (temporarily) interrupts the heat transfer between the exhaust air and supply air.The cool outside air is then not pre- heated before it enters the dwelling.
The bypass is used particularly on warm days dur-
2.1.5 Chimney Sweep Control
The
The chimney sweep control system is employed in dwellings with open fire, as here air can be drawn back by the draught of the chimney. If problems occur with the smoke discharge via the draught of the chimney, this situation must on no account be caused (or exacerbated) by the
Instructions for the User 3