1.0
General information
To ensure safety and correct operation please, read and observe the following instructions carefully before proceeding.
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 and applied.
The planning office provides the planning documents necessary for the system calculation. Additional information or a
detailed plan (chargeable service) can be requested from Helios. Keep the installation and operating instructions as a
reference at the device. After the final assembly, the document must be handed to the operator (tenant/owner).
Outline of the installation and operating instructions:
Chapters 1 – 3
General installation, operating instructions, unit installation and initial commissioning and adjustment
– intended for specialist installers
Chapters 4 – 5
Acces Service and Maintenance
– intended for specialist installers and end customers
All information on the operation and control of the compact unit can be found in the “easyControls” user manual (No. 82
200), which is included in the delivery. This user manual is intended for specialist installers and end customers.
1.1 Warning and safety instructions
The adjacent symbol is a safety-relevant prominent warning symbol. All safety regulations and/or symbols must
be absolutely adhered to, so that any dangerous situation is avoided.
1.2 Important technical information
The KWL EC 270/370 W R/L has a door contact switch. If the front door is removed, the internal terminal box is fully iso-
lated from the power supply. In this way, normal maintenance work e.g.: checking the condensation outlet, filter change,
heat exchanger cleaning, installation of the pre-heater (accessories) is possible.
Should the internal terminal box be opened (e.g.: fuse replacement, battery replacement), the supply voltage
must be disconnected from the power supply directly in the supply line!
The appropriate measures can be found in Chapter 2.
1.3 Guarantee and liability claims
In order to safeguard the guarantee and liability claims of the customer, the following information must be observed:
– Implementation according to “unit” Installation and operating instructions
– Implementation according to “easyControls” operating instructions
– The use of accessories, which are not approved, recommended or offered by Helios, is not permissible. Any damages
are excluded from the guarantee.
If these instructions are not observed, all warranty claims and accommodation treatment are excluded. This also applies
to any liability claims extended to the manufacturer.
1.4 Certificates - guidelines
If the passive house compact unit is installed correctly and used to its intended purpose, it conforms to all applicable
regulations and CE guidelines at its date of manufacture.
1.5 Receipt
The delivery contains the unit type:
KWL EC 270 W R/L
or
KWL EC 370 W R/L
Please check delivery immediately on receipt for accuracy and damage. If damaged, please notify the carrier immedia-
tely. In case of delayed notification, any possible claim may be void.
1.6 Storage
When storing for a prolonged time, the following steps are to be taken to avoid damaging influences: Protection by dry,
air-dustproof packing (plastic bags with drying agent and moisture indicators). The storage place must be waterproof,
vibration-free and free of temperature variations. Damages due to improper transportation, storage or putting into ope-
ration are not liable for warranty.
1.7 Shipping
The unit is packed ex works in such a way that it is protected against normal transport strain. Carry out the shipping
carefully. It is recommended to leave the unit in the original packaging until installation to avoid possible damages and
contamination.
1
Passive house compact units KWL EC 270/370 W R/L
Installation and Operating Instructions
CHAPTER 1
GENERAL INSTALLATION
AND OPERATING
INSTRIUCTIONS
EN
Congratulations
You have purchased a premium product from Helios Ventilation Systems. As a Helios customer, you will benefit from the company’s many years of experience
in the sector and you have received a premium quality product. All KWL EC 270/370 W R/L units have been tested at every stage of production. Not only has
the obvious function (e.g. the fans running) been tested, but also the functions which you, as the customer, cannot test. For example, these include internal and
external leakages and electrical safety. We enable you to reduce operating costs through innovative ideas in the field of control and feedback control systems.
However, if you unexpectedly have a problem with our unit, you can contact the specialist installer or our Helios customer service team.
WARNING
IMPORTANT
☞
