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1. Operating instructions
1.1 Heater description
Stiebel Eltron storage heaters store heat
using the lower-cost off-peak electricity tariffs
. This stored heat is then emitted during the
day in the form of convected warm air and
radiated heat.
1.2 Operation
The charging and discharging of the storage
heater is determined by using the control
knobs which are on the front of the heater
(not applicable to ETC 85 M).
The most important
points in brief
10
Heat storage (Input charge control)
– adjustable selection knob
Heat emission (Output control) –
adjustable selection knob
The control of the charging and discharging
of the ETC 85 M is preset at the factory and
cannot be adjusted.
To turn off the heater completely from the
mains electricity supply, e.g. during the Sum-
mer period, an external isolating switch, sited
in close proximity to the heater, must be
used.
1.2.1 Charging
(not applicable to ETC 85 M)
The amount of heat stored (charging) is
determined by using the input charge control
knob (11).
These charging instructions should be
followed after the 'first charge' procedure
(See section 2.6.2) has been completed.
Setting the input charge control knob
for the ETC.M range
Initial setting of the input charge control
knob should be undertaken in accordance
with the following 'rules of thumb':
1-2 = transition seasons (spring/autumn)
3-4 = mild winter days
5-6 = cold winter days – this corresponds
to full charge level
If, after the first day, the charge level is too
high or too low, you should make small
adjustments to the input charge control (11)
and then leave it for another night. After
getting used to the unit for a short period
6
(for the user and the professional)
you will gain the necessary experience to
ensure that you select the correct setting.
Setting the input charge control knob
for the ETC.A range
The ETC.A range of heaters are fitted with
an input charge control that varies the
amount of charge taken, dependant on
weather conditions and the amount of any
residual energy already stored in the heater.
The setting of the optimum position for this
control knob may take a few days of
experimentation, but once set, it should not
have to be adjusted again.
After initial installation the input charge
control knob should be set at position 4. If
your room is too warm the following
evening, reduce the setting to number 3 or if
it is too cold increase it to position 5. On
subsequent evenings adjust the knob by half
a number at a time until your comfort level is
achieved.
A smell can be given of during the
first charge period, therefore care
should be taken to adequately ventilate the
room, e.g. open a window.
Children or people with breathing
difficulties should not remain in the vicinity
11 (F1)
of the unit during the first 48 hours of the
initial charging period.
1.2.2 Discharging
(Not applicable to ETC 85 M)
The stored heat is emitted via the unit's
surface and via the air outlet grille at the top
of the heater.
With the output control knob (10) the level
of heat output can be influenced.
Altering the position of the output control
knob will influence the position of the
damper flap mechanism that is situated
below the outlet grille. Position 1 ensures
that the flap remains closed and position 6
allows the flap to open later in the day.
If the building is to be empty for several days,
it is recommended that both control knobs
(10, 11) are set at position „1".
In summer the heater can be isolated from
the mains electricity supply by means of the
external isolating switch.
1.3 Safety instructions
The heater must not be
– operated in rooms which are subject to
a fire or explosion risk on account of
chemicals, dust, gases or vapours;
– operated in the immediate vicinity of
conduits or receptacles which convey or
contain flammable materials or materials
which are subject to an explosion risk;
– operated if the minimum distances from
neighbouring object surfaces are fallen
short of.
• The heater must not under any
circumstances be operated if work such as
the laying, sanding, sealing, cleaning with
solvents or maintenance of floors, e.g.
spraying or floor waxing etc, is being
carried out in the room. The room must
be adequately ventilated after this work
has been carried out and prior to charging.
• The warm air must be allowed to flow
freely from the heater grille! No objects,
e.g. furniture, drapes, curtains and textiles,
whether flammable or non-flammable,
should be sited within the specified
minimum distances from the storage
heater and air outlet grille that are
mentioned in Fig A on page 2 and below;
– 500 mm from the air outlet grille, in all
directions
– 150 mm from the heater for textiles of
all types, (do not expose directly to the
warm air flow)
– 75 mm from any adjacent wall
– 250 mm below any window sill or other
projection, e.g. a shelf
– 200 mm between two storage heaters
• The surface of the heater and the air
outlet grille can reach temperatures of
over 70°C. Consequently, no flammable,
combustible, or heat insulating objects or
materials, e.g. washing, blankets, magazines,
containers of floor wax or solvents, spray
cans or similar, should be placed on the
storage heater or in its immediate vicinity.
Items of clothing or washing should never
be hung over the storage heater to dry.
There is a Danger of them catching fire!
• The free flow of air into the inlet openings
in the lower area of the heater (at the
back and front, to the right and left) must
not be impeded or blocked by anything.
• No living things, e.g. animals or pets, should
be placed on or in close proximity to the
heater.
1.4 Care
If slight discolouration appears on the air
outlet grille or the heater casing, this should
be wiped off with a damp cloth as soon as
possible. The unit should be cleaned and
cared for when cold, using conventional
cleaning agents. Avoid abrasive and caustic
cleaning agents. Do not spray anything into
the unit or onto the air outlet grille.
1.4.1 Maintenance
(by a competent person)
The heater only requires minimal maintenance.
It is however recommended that the storage
heater is inspected and cleaned by a competent
person prior to each heating season.
1.5 Fault finding
Should the heater fail to become warm:
– Check whether the charging control knob
(11) is in the max. position, if not, re-adjust
to the maximum position.
– Check whether the heater is switched on
at the external isolating switch adjacent to
the heater
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