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Electrical pre-heater AIR1-EVH RH
Installation and Operating Instructions
EN
1 .0
Important information
In order to ensure safety and correct operation and for your own safety, please read and observe the following inst-
ructions carefully before proceeding. Important information on filter changes and necessary cleaning and maintenance
activities is specified in the maintenance section. Filter changes are usually carried out by the user. Further cleaning and
maintenance work may only be carried out by qualified electricians. The chapter “Installation and commissioning” with
important installation information and basic unit settings is intended for the specialist installer.
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The electrical connection must be fully isolated from the mains power supply until final assembly!
This unit is not intended for use by persons (including children) with reduced physical, sensory or mental
capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction con-
cerning use of the unit by a person responsible for their safety . Children should be supervised to ensure that
they do not play with the unit .
Keep the installation and operating instructions with the unit for reference. The document must be handed to the ope-
rator (tenant/owner) after final assembly.
1 .1 Warning and safety instructions
The adjacent symbol is a safety-relevant prominent warning label . All safety regulations and/or symbols must be
absolutely adhered to, so that any dangerous situation is avoided .
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DANGER
Indicates dangers which will
directly result in death or serious injury
if the safety instruction is not followed.
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WARNING
Indicates dangers which will
result in death or serious injury
if the safety instruction is not followed.
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CAUTION
Indicates dangers which can result in
injuries
if the safety instruction is not followed.
ATTENTION
Indicates dangers which can result in
material damage
if the safety instruction is not followed.
1 .2 Warranty claims – Exclusion of liability
If the preceding instructions are not observed, all warranty claims shall be excluded. This also applies for liability claims
against the manufacturer.
The use of accessories, which are not recommended or offered by Helios, is not permitted. Any possible damages are
not covered by the warranty.
1 .3 Regulations - Guidelines
If the product is installed correctly and used according to its intended purpose. conforms to all applicable provisions
and CE guidelines at its date of manufacture.
1 .4 Area of application – Intended use
The electrical auxiliary heater is exclusively intended as an accessory for ventilation units in AIR1 series RH.
The intended use also includes observance of the operating manual as well as the inspection and maintenance intervals
stipulated by HELIOS.
Any use other than the intended use is prohibited!
1 .5 Functional description
The electrical pre-heater is used to increase the outside air temperature. The electrical pre-heater prevents the rotary
heat exchanger from freezing! This is controlled gradually to reduce the energy consumption.
The pre-heater is equipped with two safety temperature limiters. The safety temperature limiters (Auto reset = trigger
temp. +70 °C) and (manual reset = trigger temp. +90 °C) are connected in series. Once a safety temperature limiter is
triggered, the electrical heating register will be disconnected from the power supply and an error will be displayed on
the controller.
– Activate/deactivate pre-heater
The user/installer can activate/deactivate the pre-heater (see chapter for commissioning)
The pre-heater will only operate if the supply air fan is running smoothly. If the unit is either switched to standby mode
or deactivated, then the pre-heater will immediately deactivate. The supply air fan has an overrun time of 90 seconds.
The technical data and dimensions of the electrical pre-heaters are shown in the following table.
CHAPTER 1
GENERAL INFORMATION
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DANGER
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DANGER
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WARNING
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CAUTION
ATTENTION
