English; Operating Instructions; Installation Instructions; Packing Unit - STIEBEL ELTRON RTI-E3 Gebrauchs- Und Montageanweisung

1. Operating instructions

RTI-E3
The RTI-E3 is an electronic 2-point control
unit; i.e. the blower of the storage heater is
switched on by the RTI-E3, operated at a con-
stant speed, and then switched off again.
RTI-EP2
The RTI-EP2 is an electronic proportional
control unit; i.e. the speed of the storage hea-
ter blower motor is steplessly adjusted by the
RTI-EP2 to suit the heat requirement.
In this situation, the speed regulation of the
blower motor is effected as a function of the
difference between the room temperature
(the actual temperature) and the temperature
which has been set at the selector button R2
(the reference temperature). The smaller this
difference, the lower the speed of the blower
motor.
However, if the storage heater is being ope-
rated with a supplementary heating system,
then the RTI-EP2 automatically switches over
to a 2-point control arrangement; i.e. if heat is
being given off, then the blower motors only
run at full capacity. If the supplementary hea-
ting is switched off by means of the switch on
the operating panel, then the RTI-EP2 again
operates as a proportional control unit.

2. Installation instructions

The discharge control unit must be installed
by an approved qualifi ed installer, following
these Operating and Installation Instructions
as well as the instructions for the storage
heater.
All electrical connection and installation
work is to be carried out in accordance with
VDE 0100 provisions, the regulations of the
electricity supply utility companies concerned,
and the corresponding national and regional
regulations.

2.1 Packing unit

1 discharge control unit with
– connection lead for charge and discharge
control unit
– 6-pin plug connector with cable harness
1 ON/OFF switch
1 adjuster (potentiometer) with connection
lead
1 temperature selector button
1 set of operating and installation instructions
1 room temperature sensor with 2 screws
2 separate switch leads for switches

2.2 Installation

Before starting installation work, isolate the
storage heater from the electricity supply.
8
for the user and the professional

1.1 Mode of operation

The discharge control unit is switched on and
off by means of the S2 switch on the control
panel of the storage heater (ON = " ").
The room temperature desired can be step-
lessly adjusted between about 5 to 35 °C by
means of the R2 selector button on the ope-
rating panel. If the selector button is in the
central position, the room temperature will be
kept to a constant temperature of about 20 °C.
If the room temperature drops below the
preset value, the discharge control unit auto-
matically switches on the storage heater blo-
wer motors, so that the stored heat is blown
into the room.
After adjusting the temperature it may last y
few minutes before the blower will start due
to technical reasons.
On very cold days, it is recommended that
the discharge control unit be switched on if
no-one is going to be present for several days,
in order to keep the room temperature at
about 10 °C, for example, so as to prevent
the building or the room from becoming too
cold (to protect against freezing).
Night-time heating reduction
By utilising an external switch or timeclock, a
temperature reduction of approx. 4 K can be
achieved.
for the professional
When connecting the storage heater
to an automatic charging control
device, it is possible, even with the fuses
removed, that voltage will still be present at
the terminals A1/Z1 - A2/Z2.
If several storage heaters are being set up
next to one another, care is to be taken to
ensure that the discharge control unit is
installed in the right-hand outer device. This
guarantees that the room temperature can be
detected without any problem.
Briefl y the most important
Selector button -
R2
room temperature

2.2.1 Installation sequence

⇒ Remove the air outlet and inlet grilles, the
front wall, and the right side wall, as descri-
bed in the installation instructions for the
storage heater.
⇒ Push the blind cap for the switch (20) and
temperature selector button (21) out of
the operating panel from the switchbox
side, using a mechanical aid.
⇒ Push the ON/OFF switch (S2) with the
„flat plug upwards" into the operating pa-
nel from the front.
20
21
ON/OFF switch -
S2
thermostat
Selector button
- charging
S2
R2