Stiebel Eltron SH S electronic с 26.04.2004: 1. Operating instructions

12

1. Operating instructions

 for the user and the qualified installer

1.1 Description of unit

SH 30 - 150 S electronic

 wall-mounted

water heaters are intended for heating cold

water in accordance with BS (British

Standard). To suit requirements, they can

provide hot water up to about 82 °C and

can supply one or more draw-off points

depending on the operating mode. The

water is heated electrically in single-circuit

operation. Automatic reheating to the preset

temperature takes place automatically. The

water volume available in each situation is

indicated by lights (LED’s) on the control

panel. The wall-mounted water heater is

provided with corrosion protection by means

of an incorporated signal anode.

The wall-mounted water heater can be used

optionally for:

•

Unvented (pressurized) operating mode

for the supply of several draw-off points.

•

Vented (pressureless) operating mode

 for

the supply of one draw-off point.

•

Infinite 

temperature adjustment

 is possible

from about 35 °C to about 82 °C 

A

(

1

).

•

The 

heating-up process

 is indicated by the

signal lamp 

A

(

2

).

•

The 

time required for heating up

 is

dependent on the storage content, the

cold water temperature, and the heating

capacity, see Diagram 

B

.

y

Hot water availability at 40 °C

Bath

Shower

Hand

Washing

=

ˆ

 120 - 150 l =

ˆ

 30 - 50 l

=

ˆ

 2 - 5 l

•

The 

electronic heat content display

 with 7

lights 

A

(

3

) on the operating panel shows

the heat quantity available at a particular

time. With the temperature setting you are

selecting the usable quantity of hot water.

The display 

C 

shows the quantity of

water available as mixed water at 40 °C

(15 °C cold water inlet temperature:

65 °C temperature setting). The number

of diodes which light up is a measure of

the minimum amount of mixed water still

available at about 40 °C for bathing and

showering.

The mixed water volume is derived from

the storage size, the temperature setting of

the storage unit (from 40 °C) and the cold

water inlet temperature.

Example:

If 

6 LED’s 

light up on the 

SH 80 S

, there

are 

about 160 litres of water at 40 °C

available. This means the storage unit has

enough water to fill one bath. The LED’s

show at a glance whether the storage

content is still sufficient for filling a bath or

for a shower, or whether the heating-up

time must be run through first.

•

A used-up 

signal anode

 is indicated by the

„SERVICE ANODE“ signal lamp 

A

(

4

).

1.2 The most important

points in brief 

A

Temperature selection button (

1

)

Signal lamp for operating mode (

2

)

Lights for the heat content display (

3

)

„SERVICE ANODE“ signal lamp (

4

)

Operation

Temperature selection button (

1

)

z

= cold (see also Instructions, Risk

of Freezing)

E

= (approx. 60 °C) Recommended

energy economy setting, low

limescale formation

82 °C

= Maximum temperature which

can be set.

Depending on the system, the

temperatures may deviate from the

reference value.

1.3 Safety instruction

•

A hot water temperature of more

than 60 °C may occur at the draw-off

fitting.

•

If it is intended that children or persons

with restricted physical, sensory, or mental

capacity should operate the appliance, it

must be ensured that this is only done

after appropriate instruction has been

provided by the person responsible for

their safety.

Children should be supervised to ensure

that they do not play with the device -

Risk of scalding!

1.4 Important notes

•

Arrange to have the wall-mounted water

heater and the safety group checked

regularly by a qualified installer.

•

Check your fittings regularly. Remove

limescale from the fitting outlets with

conventional scale removal products.

•

Units in unvented operational

mode are under waterpipe pressure.

During heating, the expanding water drips

out of the safety valve. If water still drips

out after the heating process has finished,

inform your qualified installer.

•

Units in vented (pressureless) operating

mode:

The outlet pipe of the fitting must always

be free. Do not use any perlators or

aerators.

During each heating process, expansion

water drips out of the outlet.

Freezing risk

The unit is protected against freezing in all

operating modes,

 however the safety group

and the water pipe are not.

Energy saving tip

The heat content display allows you to

obtain a hot water supply which is optimum

for you, energy-saving, and matched to suit

your usual consumption requirements.

How to proceed:

Start with a temperature setting of 65 °C. If,

after the largest draw-off (e.g. filling the bath),

more than one LED lights up, reduce the

temperature setting. By following this

procedure, you will determine the optimum

low storage temperature for your usual

requirements, and so reduce possible heat

losses to a minimum.

1.5 Care and maintenance

Maintenance work, such as checking

electrical safety, may only be carried

out by a qualified installer.

A damp cloth is sufficient to take care of

the housing. Do not use any abrasive

media which might detach the coating.

1.6 Operating and

installation instructions

Keep these Instructions carefully. In

the event of a change of ownership,

hand them over to the new owners, and

give them to the qualified installer to read

in the event of maintenance and possible

repair work being carried out.