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2.
INTENDED USE
This unit is designed for use as an exhaust air heat pump in multi-storey residential buildings. It may only be
operated in exhaust air systems with normal air (low dust content) up to 40°C conveying medium temperature.
For proper and efficient use, the unit requires a minimum exhaust air volume that is always present (see the
Technical data/minimum exhaust air volume flow section).
On the heating side, the lowest possible system temperatures are an advantage. If the operated heat sink is
not extremely large, a stratified storage tank must be connected to the device to ensure efficient operation
and long heat-pump running times. We recommend a capacity of 300 litres and use in conjunction with a low-
temperature heating system. The unit can only provide heat input if a sufficiently large heat sink is available.
The unit’s operating limits must be taken into account here. It is not possible or permitted to prepare domestic
hot water using this unit alone. The applicable regulations for domestic hot water hygiene must always be
observed.
The unit is approved exclusively for outdoor installation on the flat roof of a building with a maximum
building height of 60 m (Eco+ 111/ Eco+ 121) & 50m for Eco+ 131. Installation in zones other than
wind zones 1-3 (DIN EN 1991-1-4:2005) is not permitted.
The procedures described in these assembly instructions for assembly, operation and maintenance must
also be observed when using the unit for its intended purpose. Please read all the assembly instructions
before starting work. Modifications and alterations are only permitted with our written approval.
The unit warranty shall not cover the cost of motor ladders, scaffolding or other lifting systems which may be
necessary to provide the services covered by the warranty. The unit must be installed by trained personnel
in compliance with the national legislation in force in the country of destination.
The unit must be installed in such a way that maintenance and/or repair work can be carried out. The warranty
shall become void if work is carried out on the unit contrary to the instructions given here or in any other way
without professional care.
Approved refrigerants
It is forbidden to fill the refrigerant circuits with a refrigerant other than the one specified.
Using another refrigerant can seriously damage the compressor.
System logbook
We recommend that you keep a system logbook, which can be used to trace the operations carried out on
the unit. In this way, interventions can be organised more easily, searches can be made easier and machine
defects can be avoided. The date, type of intervention carried out (regular maintenance, inspection or repair),
description of the intervention, measures taken, etc., should be entered in the system logbook.
Disposal
The unit must be disposed of in accordance with the regulations in force in the individual countries.
