6
www.eta.co.at
Warranty, guarantee and liability
General
Possible effects
•
Measures for avoiding the danger
Types of safety instruction
CAUTION!
On non-compliance with this safety instruction, there is
a risk of material damage.
WARNING!
On non-compliance with this safety instruction, there is
a risk of physical injury.
DANGER!
On non-compliance with this safety instruction, there is
a risk of major physical injury.
1.3
Warranty, guarantee and liability
Requirements
We can only accept liability for the function of our
products if they are correctly installed and operated.
This is only possible if the conditions below are
complied with.
Maximum of 2,000 hours at full load per year
The boiler described in this user manual may only be
used for heating and producing hot water, with no more
than 2,000 full-load hours annually.
Installation in a dry room
For set-up, a dry room is required. In particular, only
condensation dryers may be used as clothes dryers in
the same room.
Observe local building and fire safety regulations
Local building and fire safety regulations must be
observed.
Suitable fuel – logs
The log boiler is suitable for use with wood briquettes
and air-dried split logs with no more than 20% water
content. Use with unsuitable fuels, especially refuse,
coal and coke, and also wet wood, is not permitted.
Suitable fuel
The boiler is suitable for use with wood pellets
according to EN ISO 17225-2:2014, quality class A1,
ENplus-A1. Operation with unsuitable fuels, in
particular those containing halogens (chlorine) or high-
slag pellets such as from grain waste, is not permitted.
Ensure supply air is free from aggressive
substances
The air supplied to the boiler must be free from
aggressive substances such as chlorine and fluorine
from solvents, cleaning agents, adhesives and propel-
lants, or ammonia from cleaning agents, to prevent
corrosion of the boiler and chimney.
Permissible water hardness
Water is the intended heat-transfer medium. For
special anti-frost requirements, up to 30% glycol may
be added. Softened water is required for the initial fill-
up of the heating system and for refilling after repairs.
Addition of hard water should be minimised to limit
limescale build-up in the boiler.
In order to protect the boiler from calcification, the
water hardness of the heating water must be
taken into account. Observe the indications outlined in
ÖNORM H 5195-1. Details can be found in chapter
13
"Heating water"
.
pH value between 8 and 9
The pH value of water used to fill the heating system
must be between 8 and 9.
Use a sufficient number of shut-off valves
Set enough shut-off valves to avoid bleeding large
amounts of water during repairs. Any leaks in the
system must be repaired at once.
Minimum return temperature 60°C
Ensure a minimum return temperature of 60°C to the
boiler.
Install safety valve and thermal relief valve
A safety valve (triggered at 3 bar) as protection against
excess pressure and a thermal relief valve (triggered
at 97 °C) to protect against overheating must be
installed by the contractor.
Provide a sufficiently large expansion tank or a
pressure maintaining device
To prevent air from being drawn in while the system is
cooling, the heating system professional must provide
a sufficiently large expansion tank or a pressure
maintaining device.
Summary of Contents for TWIN 20 kW
Page 1: ...2016 04 02 EN 0000000302 V 001 X 36 0 2303 93412 001 TWIN pellet burner 20 26 kW Operation ...
Page 39: ...ETAtouch controller TWIN function block 39 ...
Page 49: ...ETAtouch controller Buffer function block 49 ...
Page 53: ...ETAtouch controller Hot water tank function block 53 ...
Page 57: ...ETAtouch controller Fresh water module function block 57 ...
Page 81: ......
Page 82: ...www eta co at ...
Page 83: ......
Page 84: ...www eta co at ...
