SAFETY GUIDELINES
TECHNICAL DOCUMENTATION 07
DESCRIPTION
SERVICE
Should you require any assistance during installation or in the unlikely event of a product failure please do not
hesitate to contact our technical department on 03452 60 60 20.
GENERAL RESTRICTIONS
Mikrofill products should always be used, installed and maintained in accordance with the statutory
requirements, specifications and standards applicable to these installations. Mikrofill cannot be held
responsible for any losses or damage whether direct or consequential that have arisen as a result of incorrect
or poor installation.
GENERAL
The Mikrofill ETHOS wall mounted boilers are environmentally friendly gas fired heating boilers with a
modulation range between approximately 10% and 100% of their maximum output. The appliances have low
NO
X
and CO emission, which satisfies the most stringent environmental requirements.
The boilers may be used on both open (type B23) as well as room sealed (type C13, C33, C43, C53, C63 or
C83) systems.
The boiler is delivered fully wired, fully assembled, tested and preset complete with emissions report.
WORKING PRINCIPLE AND DESIGN
Air is drawn in as required, via a variable speed fan. The gas valve measures the negative pressure (draught)
in the venturi and modulates the gas valve in response. The gas and air is then thoroughly mixed in the correct
ratio in the fan housing and fired directly into the burner.
The boiler management system compares the actual water flow temperature to the required water
temperature. The management system computes the load required and adjusts the fan speed. This is a
continual process during operation.
The heat transfer takes place in a stainless steel double heat exchanger block. The burner fires into the primary
heat exchanger whilst the second heat exchanger (condenser) is connected downstream in such a manner
that the condense water cannot enter the primary heat exchanger, both heat exchangers consist of several
smooth pipes in the form of a coil and are connected using stainless steel water distribution manifolds.
WARNING!
Particular attention must be given to the safety guidelines as non-compliance will render
the warranty void and may constitute an illegal installation.
The ETHOS range has received CE approval for all relevant European countries and has
been registered under the Product Identification Number 86CN59.
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