ESP EC-200QM Operations Instructions download pdf (Page 30)

Installation and operating instructions

Compact wall-mounted units KWL EC 200/300 W R/L

2.4

Connecting spigots

The units are supplied with four spigots (diameter 125 mm). A secure and tight connection to the spigots

is required (e.g. IsoPipe IP-125), the connector RVBD 125 (Order No. 9640) must be used in this

respect. The arrangement of the ventilation duct can be seen from figures 22/23, depending upon the

model.

2.5

Air ducting, ventilation circuit

When designing the ductwork, use the shortest possible runs. Airtight connections and changeovers

must be ensured for the best possible heat recovery. To avoid pressure losses, dirt build-up and noise,

use smooth ducts. The following duct diameter DN 125 mm (e.g. isolated pipe system Iso-Pipe IP-125,

accessories) is to be planned for main lines (outside, extract air, supply air distributor, extract collector),

and the ø is reduced accordingly for branch lines.

The supply air is led to the primary areas and the extracted air is led from the secondary areas. In order

to reduce condensation in the outside and outgoing air pipes, and any pre-heating coils and filter boxes,

these are to be insulated in an appropriate way. The minimum insulating thicknesses in accordance with

German Institute for Standardization EN in 1946-6, 05/2010 must be observed. If supply and extract air

ductwork run through unheated rooms, insulation must be provided to reduce heat losses. Fresh air

should be supplied into living rooms and bedrooms, and extraction takes place in bathrooms, toilets and

kitchens. To balance the whole system, supply and extract openings should be provided with adjustable

valves (accessories).

During extraction of polluted extract air, a filter (accessories) is to be connected. The installation of

kitchen hoods to the system (cause: dirt, fire danger, hygiene) is not permitted. To ensure air circulation

within the room, sufficient overflow openings (door gap, door grilles) are to be planned.

ATTENTION

Fire and building regulations must be observed.

2.6

Unit insulation

If installed in heated rooms and higher humidity condensation can occur at the outside of the unit in the

outside and extract air area. In this case a water-vapour-tight insulation is to be attached laminar in this

area. Furthermore the outside and outgoing air ductwork should be insulated sufficiently.

If installed in non-heated areas (e.g. frost-protected attic) a sufficient insulation outside on the unit is to

be installed all around. Otherwise condensate formation could occur on the housing sides. The

condensate removal must be installed frost-protected, perhaps with a heater.

Furthermore, the outside air and outgoing air ducts, and any pre-heating coils and filter boxes must be

sufficiently insulated on site.

WARNING

2.7

Electrical connection

All work must be carried out with the equipment fully isolated from the power supply. The

electrical connections are to be carried out in accordance with the relevant wiring diagram and

are only to be carried out by certified electricians. All relevant national standards, safety

regulations and provisions (e.g. DIN EN VDE 0100) and the technical connection conditions of

the electrical supply company must be observed.

If the internal terminal box is opened (e.g. fuse replacement, battery replacement, etc.), then the

KWL unit must be fully isolated from the power supply!

– Allow the unit to cool down or wait for five minutes until the fans have turned off.

– Risk of electric shock, moving parts (fans) and hot surfaces.

According to DIN EN 60335-1 / VDE 0700 T1 7.12.1, a main switch and isolator (Accessories RHS 3+1

Order No. 1594) or a residual current circuit breaker model: FI 300 mA 2 Type B or B+ must be

integrated in the unit supply cable and, in this respect, the minimum requirement of a 3 mm contact

opening must be fulfilled. The main switch and isolator or the FI must be protected against being

restarted by appropriate means.

The KWL EC 200/300 W R/L models have a door contact switch and if the front door is removed, the

internal terminal box is fully isolated from the power supply. In this way, normal maintenance work

(checking the condensation outlet, filter change, heat exchanger cleaning, installation of the pre-heater

(accessories)) is possible. The owner may carry out maintenance work on the unit.

IMPORTANT NOTE

☞

Please hand the circuit diagrams to the installer!

Always use deep flush-mounted boxes for the control elements or the sensors (KWL-CO

, KWL-

VOC or KWL-FTF). The control line must always be inserted in an empty conduit M 25. It is

important to ensure that the wiring is connected in series and not radially. A deviating control

line must be installed (see circuit diagram SS-1077 or SS-1079) depending on the number of bus

components and cable lengths.

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ESP EC-200QM Operations Instructions Page 30

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