Olsberg 14/536 Instruction manual

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Olsberg 14/536 Instruction manual | Manualzz


Instruction Manual


High-line heater

Table of Contents


................................................... Page 20

Delivery, Packaging, Recycling............................20

Instructions for the installer

Heater Positioning and Installation


Procedures to be followed....................................21

Choosing the Heater Position .............................21


- Minimum Clearances.........................................21

- Tilting Safety, Wall Fixing ..................................21

- Heater assembly.......................................... 23-26

Electrical Connection ...........................................27

Cable Feed...........................................................27

Circuit Diagram.....................................................28

Rating Label


Spare Parts




Charge Control .....................................................30

Room Thermostat ................................................30

Thermal Switching Relay .....................................30

Day-acting Element..............................................30

Commissioning the Heater




Trouble Shooting Tips


Instructions for the user



Energy saving tips ................................................32

Care and Maintenance.........................................33

Important Instructions...........................................33

Defects .................................................................33

Technical Data


General guarantee conditions


This instruction leaflet must be:

• handed to the heater user after installation. The user is also to be instructed on the way this electric storage heater works.

• read carefully, retained for further use, and handed over to a new owner/user.

• given to any maintenance engineer before repair work is carried out.



Please read this instruction carefully. It contains important information on safety, installation, use and maintenance of the heater.

The manufacturer cannot be held responsible for problems occurring when the following instructions are not adhered to. The appliances must only be used for the function intended.

Delivery, Packaging, Recycling

To facilitate transport and handling, the heater cabinet

(with built-in heating elements) and the bricks are packaged separately.

The packaging of your high-quality Olsberg Appliance has been limited to the minimum necessary for safe transport and is made entirely of recyclable materials.

The packaging and heater parts have been marked according to present requirements and/or possibilities to allow the best possible disposal or recycling at a future date.

Note: Packaging materials, replacement parts and heaters or heater parts to be scrapped must all be disposed of correctly according to regulations.

Disposal of old heaters

Old electric and electronic devices often contain valuable materials. But they may also contain harmful ingredients which were necessary for their function and security. In normal waste disposal or incorrect treatment they could be harmful to the environment. Please help to protect our environment! Please do not add your old heater to normal waste in any case. Dispose of your old heater according to the local regulations.


Instructions for the installer

Heater Positioning and Installation

• The electrical installation of this heater must be approved by your local electricity company.

• The installation must be carried out by a competent electrician.

• Electrical installation and local safety regulations must also be adhered to.

• If heaters are to be installed in commercial or public buildings such as hotels, holiday homes or apartments, schools, administrative buildings etc., a special warning label is to be attached to the top of the heater. This label is available from your local contractor.


The heater should be only removed from its packaging near to its place of final assembly.

Small cracks or chips in the heater core bricks have no influence on the operation of the heater.

Minimum Clearances

For reasons of safety, the following minimum clearances are to be adhered to:

From cover and side panels ..........................10cm

From air-outlet grille.......................................25cm

Procedures to be followed

All National and Local Safety Codes should be adhered to both at the planning and installation stages.

Choosing the Heater Position

The heater can be positioned anywhere within the room to be heated.

The floor and/or the wall must be able to take the weight of the heater. Please, therefore, note carefully the weights given in the Technical Data section of this instruction. If in doubt, consult a building engineer or architect.

Olsberg storage heaters generally need no protective underboard when standing on normal flooring, as long as this is flat and smooth and can withstand temperatures of 80°C minimum.

In the case of soft, load-sensitive or non-heat-resistant floors or carpeting, as well as to even out any surfaces, it is advisable to first put down a protective board the size of the underside of the heater. When using high- or thick-pile carpeting a protective board should

definitely be used.

For appliances without integral room thermostats, the wall-mounted room thermostat should be mounted preferably on an internal wall, at least 2.5m from the heater and at a height of approx. 1.5m.

Tilting Safety, Wall Mounting

Olsberg electric storage heaters must be protected against tipping over. To do this, the heaters are to be fixed to the wall.

The heater should first be mounted to the wall as shown in Fig.1 using the screw and wall-plug provided. The fixing screw can be threaded through either the left-hand or right-hand inside panel.



Fig.1 Wall Mounting




Dim. H



Dim. A



Heater assembly

• Opening the heater (Fig.2):

1. Prise off the plastic caps and remove the screws.

2. Pull the side panels at the front outwards and remove them backwards.

3. Lift the top panel (A) approx. 10mm.

4. Pull the top panel forwards.

5. Lift off the top panel.

6. Pull the rear top panel (B) forwards.

7. Lift off the rear top panel.

Remove the top insulation, packaging and assembly material.







• Place the heater in its final position.

Align the fixing screw in its final position on the right or left hand inner panel and fix it firmly to the wall.

Fig.2 Opening the heater





Fig.3 Wall fixing screw


Only for heater 14/536:

Remove the top front panel (Fig.4):

Caution: Before removing the top front panel of heaters with integral room thermostats, first remove the cables from the rocker switch on the operating panel.

8. Remove the top and the side left and right screws from the top front panel (C).

9. Remove the top front panel with both top front insulations.





Only for heater 14/534:

Insert the channelled bricks using the guide plates provided, first the channelled bricks SP27, then the channelled bricks from SP26. You will find the number and type of storage brick packs in the section "Technical Data".

Fig.4 Remove the top front panel

Only for heater 14/536:

Insert the channelled bricks using the guide plates provided:

10. Insert the channelled bricks SP27 (Fig.5).

11. Replace the top front panel with both top front insulations.

12. Insert the channelled bricks from SP26.

You will find the number and type of storage brick packs in the section "Technical Data".

Fig.5 Insert the channelled bricks SP27

• Insert the heating elements into the rows of slots in the storage core.

• Place the cover bricks on to the channel bricks over the heating elements in such a way that the terminals of the heating elements lie sidewards on the channels of the cover bricks. Remove the guide plates.

Fig.6 Heating elements and cover bricks


• Pull the connection cords of the heating elements completely through the openings prepared and bow the connection cords at the coloured bushes carefully.

Caution: Do not push the connection cords backwards to the interior.

• Fit the upper insulation mats tightly onto the cover bricks (Fig.7).

Caution: Do not mix up upper insulation during installation!

Inner upper insulation


Outer upper insulation


Element ratings

You can choose from 3 different power ratings.

Connect the heating elements on to the terminal strip

X2 depending on the power rating chosen according to the circuit diagram (page 28). The terminal strip is on the left hand side of the heater on the inside panel.

Cover up the non-applicable power ratings on the heater rating label (bottom right of heater) with the label provided (in the bag with the wall-fixing screw) see example of rating label on page 29. For this, remove the protective paper from the adhesive side of the label. Position the adhesive side on the power rating to be covered by means of the frame-outline printed on the rating label. Press the covering label firmly and then remove the carrier foil. Proceed in the same way for the second rating to be covered.

Tip: It is easier to cover the rating if the edges of the label are cut off beforehand.

Put a cross against the chosen rating in the circuit diagrams, both in the Instruction Leaflet, and in the right hand inside panel.

Fig.7 Upper insulation


• Connect the heating elements to the charge control according to circuit diagram (page 28



Be careful that the capillary tubes do not touch live parts.

• The heater is then re-assembled as described in

Part 1-7 on page 23, but in reverse order.

Disassembly of fan drawer

For disassembly of drawer (e.g. for maintenance works) unscrew the air outlet grill, release the inner screws (D) on the right and left side, turn them off about 15mm and press them back.

Remove right side panel.

Pull out the fan connection cable and the drawer.

When reassembling the drawer pull back the connection cable into the lateral control panel room and tighten the two screws (D) firmly. See that the drawer does not surpass the bottom plate of the heater at the front.

Refasten right side panel and air outlet grill.


Fig.8 Disassembly of fan drawer


Electrical Connection

The storage heater is connected to element feed

(OFF-PEAK Tariff) and control cables for the room thermostat and the charge control (A1/Z1; A2/Z2).

You will find the number and type of storage brick packs in the section "Technical Data" The heater is suitable for a direct cable feed, it is also suitable for feeding from a spur junction.

Use at least a heat-resistant PVC cable (H05V2V2-F) as a load current conductor.

According to regulations every branch circuit must be individually protected, for instance by circuit breakers for all phases. These circuit breakers must have contact openings of at least 3mm.

Each storage heater must be connected to its own separate load-current cable from the distributor panel.

Running cables from heater to heater is not allowed.

As a single-phase connection is only allowed for a heater rating up to 2kW according to Utility Regulations, these heaters must always be connected to three phases.

To connect to a Central Charge Control with "single-

wire control", bridge terminals A2/Z2 and N

Make sure the earth cable is firmly connected.

Cable Feed



Circuit Diagram 78/4514.5361

Electric storage heater

Power draw

The terminal strip X2 can be found on the inner side panel on the left side of the heater.

Fitted components:

B1 Charge thermostat

E1 Storage heating elements

F1 Charge limiter

F3 Safety thermostat for fan

M1 Fans

R1 Charge control resistance

R2 Fan compensatory resistance

X1 Terminal block current feed

X2 Terminal strip for power draw setting

X3 Terminal block for control cables


B2 Room thermostat

E2 Day-acting element

F2.1 DAE control thermostat

F2.2 DAE safety cut-out

K1 Thermal relay

Tick connected power setting!

On site wiring

to a further storage heater

Distributor panel

Load-current to storage heater


Distributor panel to further storage heaters

Charge control cable

(if applicable)

Control current to storage heater

1/N/PE~230V e.g. 5x1.5mm²

Distributor panel


Even if the main circuit breakers are switched off, some terminals carrying on-peak current, especially terminals A1/Z1 and A2/Z2 can still be live.


Rating Label


The specific technical data for each heater are printed on the rating label. You can find the rating label at the below the air-outlet grille on the right hand side of the heater.

Spare Parts


Charge circuit


Discharge circuit

The power ratings not connected are to be covered on the heater rating label using the grey coloured plain labels supplied.

Fig.10 Example of rating label for heater Type 14/536-3 with power rating 6kW and nominal charge time of 8 hours

In case any spare parts are needed for the heater, the type and fabrication number on the rating label must always be quoted.

You can find the fabrication number on the circuit diagram on the inside of the right hand side panel.

We recommend that you note the type and fabrication number as well as the charging time and connected power rating below during the installation:

Type number:


Fabrication number:


Nominal charge time:

_____ h

Connected power rating:

_____ kW



Charge Control

The charge control registers the outside temperature and converts this value into a control current. This current is passed via the control wires A1/Z1 and

A2/Z2 to the control resistance in each storage heater.

At the same time, the temperature in the heater core is also registered. The switch-off point of the charge thermostat is therefore determined by both the outside temperature and the temperature of the heater core.

In this way, a control of charge according to the outside temperature and the residual heat in the heater is achieved, thus complying with Energy Saving Legislation.

The control wires can be run together with cable feeds

L, N and PE.

Please also read the Instruction Leaflet supplied with the Charge Control.

Thermal Switching Relay

By installing a thermal switching relay into each storage heater, the Utility relays in the junction box can be omitted. The thermal relay uses a bimetal strip and can be classified as a low-noise switch.

Make certain that the installation of a thermal relay does not violate installation Codes of Practice of your local Utility.

Please also read the Instruction Leaflet supplied with the Thermal Switching Relay.

Room Thermostat

The discharge of the storage heaters and thus the regulation of the room temperature is achieved using a room thermostat.

The type of thermostat and its configuration is dependent on the heater installation and the requirements of the user.

Please also read the Instruction Leaflet supplied with the Room Thermostat.

Integral Room Thermostat

The integral thermostat is designed for direct mounting to the heater itself:

• Thermo-mechanical room thermostat:

This type of thermostat switches the heater fan ON or OFF, according to the temperature required.

• Electronic room thermostat:

The speed of the fan is regulated electronically according to the required room temperature.

External Room Thermostat

Following thermostats can be supplied:

• Standard Version

- with illuminated ON/OFF switch

• Comfort- Version

- with DAE switch

- and ON/OFF switch

Day-acting Element

Using the day-acting element the heater can give off warmth immediately even if it is not charged at all.

The day-acting element works on the ON-PEAK Tariff.

Switching and control of the Day-acting Element is to be carried out using an integral or external room thermostat suitable for this purpose.

Please also read the Instruction Leaflet supplied with the Day-acting Element.


Commissioning the Heater

Following tests must be carried out before commissioning the heater:

Insulation test with a voltage of at least 500V. The dielectric resistance must be at least 0,5MOhm.

The electrical installer must measure the power draw of the elements. This can be done using a kW and time measurement or alternatively by measuring the cold element resistance.

The value is to be compared with that of the rating label or in the ‘Technical Data’ Section.


During the first charging periods the machine oils various used in manufacture, as well as dust particles accumulated during manufacture and storage burn off, causing an unpleasant odour.

Make certain the room is well ventilated.


Heaters that have already been in operation or have been taken apart and repositioned must be reinstalled according to these instructions. The commissioning tests described on this page must also be carried out.

The first charging cycle after re-assembly must be monitored by the installer until the charge control switches off the elements.

Any insulation parts which are, or seem to be, damaged or have changed properties which could influence their function and safety, must be replaced.

Trouble Shooting Tips

Olsberg Storage heaters are equipped with a continuous running charge control and a charge safety nonresetting limit switch. If the charge control does not switch off the elements under normal charging conditions, the non-resetting safety limit switches off the power supply to the elements. Problems in this category must only be repaired by a qualified installer (see

Chapter "Important Instructions").

If the heater does not work correctly, the following checks should be undertaken:

1. Heater does not store heat

Check the circuit breakers and relays.

Switch on the Central Charge Control and measure the control voltage on terminals A1/Z1. A defective central charge control can lead to continuous voltage on the control resistance, causing it to heat up so much, that the heater is always switched off.

Check whether the charge control or non-resetting safety control has switched off. The safety control is reactivated by pushing in the activating knob. Possible causes of the heater switching off are:

- defective charge control thermostat

- prohibited covering of the heater causing hot-spots

2. Heater always goes on full charge

Charge control defect? Heaters that are controlled by a central charge control should be checked to see that the control sensor is sitting correctly in the control resistance. Check that the central charge control is working and providing voltage to the control resistance. Check the control resistance also. At the same time, check that the sensor bulb sits correctly in its sleeve.

3. Heater does not give out enough heat

Heater sized too small. Fan or room temperature control is defective.

The central charge control may also have to be adjusted higher. The special instructions for the respective charge control are to be adhered to.


Instructions for the user


The heater operation takes place by means of the recessed operating knob at the top right of the heater.

By pushing the knob lightly, it will emerge for operation. After adjustment, the knob can be pushed back into the heater. The knob can be recessed in any adjustment position.

Heat Storage

takes place automatically. The amount of residual heat from the previous day is always taken into account when the heater is charged using the charge control.

Automatic Central Charge Control

The charge adjusting knob should always be set to

MAX (fully clockwise), at least in rooms that are in continuous use. If the heater charge in other, lessfrequented rooms is required to be reduced, turn the adjusting knob slightly anti-clockwise. Remember that the adjustment only makes itself felt on the following day(s). Do not, therefore, make too abrupt changes.

The amount of heat stored in the complete installation is controlled by the Central Charge Control (in the distributor panel). To adjust this, please refer to the

Instruction Manual supplied with the charge control.

Manual Control

If the heater is not connected to a Central Charge

Control the amount of heater to be stored is determined by adjusting the continuous-run manual charge knob on the heater as follows:

• No storage: Knob fully left (anti-clockwise)

• Full storage: Knob fully right (clockwise)

Once the set level of heat has been stored, the charge control switches off automatically.

Heat Discharge

The control of the heat discharge is by means of a room thermostat. Once the room temperature falls below the set level, the fans in the storage heater are switched on and heat dissipated into the room for such a period as is necessary to bring the temperature back up to the desired level.

Summer operation

Turn the adjustment knobs both on the heater, and on the room thermostat to MIN (fully anti-clockwise) during the summer months. Do not turn off the fuse or circuit-breaker to the central charge control as this can de-synchronise the charge control timer.

Energy saving tips

• Only heat when necessary.

• Keep the room temperature at 20°C if possible.

Each degree above 20°C increases the heating costs by 6 to 7%. Likewise, each degree below

20°C saves the same amount of energy.

• Do not heat only by the radiation from the surfaces of the heater, but use the fan as well. If necessary, turn the heater charge adjusting knob slightly down


• Use an automatic charge control to charge the heater if possible. Then, the heater will only store the amount of heat necessary to cover the heat load for the following day. A correctly adjusted charge control is a pre-requisite for an economic operation of the storage heater at comfortable room temperatures.

• During long periods of absence in the heating season allow the room temperature to sink, but not below 10°C. This saves energy without the risk of the building cooling out so far as to cause freezing of pipes, etc.

• Continuous airing of a building by having the windows ajar is too expensive. Short bursts of strong ventilation by opening windows fully is preferable.

During ventilation, turn the room thermostat adjusting knob to MIN (fully anti-clockwise) so that the fan does not run.

• If windows and doors are draughty, improve the draught-excluding seals.

• Close blinds and shutters after dusk, reducing the loss of heat from the windows.

• For reasons of fire safety, full-length curtains and blinds are not allowed in front of storage heaters.

Apart from that, they reduce the heat-transfer into the room, increase the losses via the windows and cause an increase in energy consumption.

• The building fabric (walls, ceilings, etc.) and also the furniture in the rooms absorb heat in a delayed time-frame, store this heat and transfer it back into the room very slowly. This should be taken into account when setting the room thermostat and also any night-time set back.

• Floors, ceilings and walls constitute a storage mass which was taken into account when sizing the heaters. If the night-time temperature set back is too drastic, this could lead to a lack of comfort during the day.


Care and Maintenance

• Olsberg heaters have been constructed so that they need only a minimum of maintenance.

• The fans are equipped with self-lubricating bearings. We recommend that the heater be opened from time to time by a qualified installer who can free the heaters from any dust which may have accumulated on the fans or in the air-outlet channels.

• Cleaning and maintenance intervals are dependent on the conditions under which the heater works.

We recommend that the first check take place at the latest before the beginning of the second heating period. Further maintenance intervals can then be individually set.

• We recommend that the control and regulation elements of the heater also be checked regularly.

All safety, control and regulation elements should be checked by a qualified installer at the latest 10 years after initial installation. This can save unnecessary energy costs.

• Do not use soft-scrub or other abrasive substances to clean the surfaces of the heater. Normal household cleaners suffice entirely.

This heater is not intended for operating by persons (including children), with reduced physical, sensory or mental abilities or for lack of experience and/or for lack of knowledge to be used it by a person responsible for their security is supervised or received from instructions like the heater to use.

Children should be supervised, in order to guarantee that they do not play with the heater.


If the heater does not function correctly, please check the following points:

• Is the heater charge control set to no-charge?

• Is the complete heating system switched off (via main switch)?

• Are the circuit breakers in the distribution box loose or defect?

• If the heater cabinet is warm, but the fan is not running: Is the room thermostat working? Are the fuses for the fans in the distributor box loose or defect?

Instructions for the Installer are to be found under

"Trouble Shooting Tips"

Our after-sales service team is of course always available to help you.

Important Instructions

As the surfaces of the heater cabinet get hot in use, flammable or other objects presenting a danger of fire must not be placed on, or near the heater.

Do not, therefore, place any wooden objects, clothes or washing, newspapers, blankets or the like on or over the heater and do not put any pieces of furniture made of inflammable materials, nor spray tubes or similar objects closer than

25cm in front of, or on the heater, especially not in front of the air-outlet grille.

It is important to remember that the surfaces of the heater can reach temperatures in excess of

80°C during operation.

The storage heater is only to be used in rooms where neither explosive gases (e.g. from floorsealant), nor inflammable dust is present!

If renovation work causing dust accumulations is taking place the heaters must either be operated without the fans or switched off altogether.

Electrical appliances conform to valid safety regulations. Repairs and service to electrical appliances must only be carried out by a competent electrician. Improper repair can mean distinct danger to the user.




General guarantee conditions

Dear customer, in guarantee case the country specified rights are valid which you may claim directly towards your dealer.



Olsberg GmbH

Hüttenstraße 38

59939 Olsberg

T +49 2962 805-0

F +49 2962 805-180 [email protected]



Key Features

  • Precise temperature control with built-in room thermostat
  • High heat retention capacity for consistent warmth
  • Multiple power rating options for customized heating needs
  • Quick and easy assembly with clear instructions
  • Durable construction for long-lasting performance
  • Energy-efficient operation to reduce energy consumption
  • Wall-mountable design for space optimization
  • Safety features, including anti-tip protection
  • Integrated charge control for efficient heat management

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Frequently Answers and Questions

How do I choose the right power rating for my heater?
The appropriate power rating depends on the size of the room you want to heat. Refer to the technical data in the instruction manual for guidance.
Can I use the heater on different types of flooring?
Yes, the heater can be placed on most flooring types, but it's recommended to use a protective board on soft or heat-sensitive surfaces.
How do I connect the heating elements to the charge control?
Follow the circuit diagram provided in the instruction manual to correctly connect the heating elements to the charge control.
Is the heater difficult to assemble?
No, the heater is designed for easy assembly. Detailed instructions are included in the manual to guide you through the process.
Does the heater have safety features?
Yes, the heater is equipped with anti-tip protection to prevent accidental overturning, ensuring safety during operation.