Bedienungsanleitung Stiebel Eltron RTI-EP2 (Seite 8 von 20) (Deutsch, Englisch, Holländisch, Französisch, Spanisch)

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ON/OFF switch -

thermostat

Selector button -

room temperature

Selector button

- charging

7843.01

8723.01

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.

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.

Brieﬂ y the most important

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.

2. Installation instructions for the professional

1. Operating instructions for the user and 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.

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.

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