EN
1.0
Important information
To ensure safety and correct operation please read and observe the following instructions carefully before proceeding.
Important information is specified in the maintenance section on filter changes and necessary cleaning and maintenan-
ce activities. The user usually accomplishes maintenance work. The chapter “Installation” with important installation tips
and basic unit adjustments is intended for the specialised installer.
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The electrical connection must be fully isolated until the final assembly!
The planning office provides the planning documents necessary for system calculations. Additional information can be
requested ex works. Keep the installation and operating instructions as a reference at the device. After the final assem-
bly, the document must be handed out to the operator (tenant/owner).
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 Warranty claims – Exclusion of liability
If the preceding instructions are not observed, all warranty claims and accommodation treatment are excluded. This
also applies to any liability claims extended to the manufacturer.
The use of accessories not offered or recommended by Helios is not permitted. Potential damages are not covered by
warranty.
1.3 Certificates – guidelines
If the product is installed correctly and used to its intended purpose, it conforms to all applicable CE guidelines at its
date of manufacture.
1.4 Receipt
The delivery contains one of the following unit types:
KWL EC 700 D Pro
Ref. no. 4171.004
KWL EC 700 D Pro WW
Ref. no. 4172.004
KWL EC 1400 D Pro
Ref. no. 4173.004
KWL EC 1400 D Pro WW
Ref. no. 4174.004
KWL EC 2000 D Pro
Ref. no. 4175.004
KWL EC 2000 D Pro WW
Ref. no. 4176.004
The scope of delivery also includes:
1x duct sensor (already connected to terminal box)
1x surface-mounted controller (with touchscreen) incl. room sensor and connection cable (5 m)
Please check delivery immediately on receipt for accuracy and damage. If damaged, please notify carrier immediately.
In case of delayed notification, any possible claim may be void.
1.5 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 water-proof, vibration-free and free of temperature variations. Damages due to improper transportation, stora-
ge or putting into operation are not covered by warranty.
1.6 Shipping
The unit is packed ex works in a timber frame so that it is protected against normal transport strain. Carry out the ship-
ping carefully. It is recommended to leave the unit in the original packaging until installation to avoid possible damages
and contamination.
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Risk of injury! Watch out for nails when disassembling the timber frame!
1.7 Range of application – application
The compact units KWL EC.. D Pro/WW with heat recovery are suitable for the central ventilation of houses and apart-
ments built upon passive-house standards (PHI) or as a decentralised solution for commercial and industrial applica-
tions. Equipped with a highly efficient cross counter flow heat exchanger with a heat recovery efficiency of over 80%,
see chart:
Equipped with the latest EC motor technology. The compact unit can be operated at a constant volume (monozone) or
pressure (multizone) due to the intelligent regulation technology.
The standard equipment permits the installation and the application in frost-free rooms > + 5 °C. If the unit is to be used
in other applications where high humidity, excessive dust, temperature in excess of 40 °C or long periods at standstill,
please contact your local Helios dealer for advice. This also applies for special technical and electrical applications.
The ventilation unit must only be used according its intended purpose!
ATTENTION
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Unit type
KWL EC 700 D Pro
Target flow rate [m³/h]
220
340
520
Heat recovery efficiency
82 % PHI
82 %
81 %
KWL EC 1400 D Pro
Target flow rate [m³/h]
420
620
850
Heat recovery efficiency
83 % PHI
82 %
81 %
KWL EC 2000 D Pro
Target flow rate [m³/h]
670
1030
1550
Heat recovery efficiency
84 % PHI
83 %
83 %
NOTE
+
2
Central ventilation units KWL EC.. D Pro/WW
Installation and Operating Instructions
CHAPTER 1
GENERAL INSTALLATION
AND OPERATING
INSTRIUCTIONS
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WARNING
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