BOSCH BT50 HP Buffer Tank Instruction Manual
- June 14, 2024
- Bosch
Table of Contents
BT50 HP
Installation and maintenance
instructions for the contractor 6720803559-00.1Wo
Safety precautions and explanation of symbols
1.1 Explanation of symbols Warning symbols
Safety instructions in this document are framed and identified by a warning
triangle which is printed on a grey background.
Signal words indicate the seriousness of the hazard in terms of the
consequences of not following the safety instructions.
- NOTICE indicates possible damage to property or equipment, but where there is no risk of personal injury.
- CAUTION indicates possible personal injury.
- WARNING indicates possible severe personal injury.
- DANGER indicates possible risk of life.
Important information
Notes contain important information in cases where there is no risk of
personal injury or material losses and are identified by a symbol shown on the
left. They are bordered by horizontal lines above and below the text.
Additional symbols
| Symbol | Meaning |
|---|---|
| ▶ | step in an action sequence |
| → | reference to a related part in the document or to other related documents |
| ● | list entry |
| – | list entry (second level) |
Table 1
1.2 Safety precautions
Fitting & Retrofitting
▶ Risk of fire!
Exercise due care when soldering and welding.
▶ This storage tank must only be fitted or refitted by a competent installer.
Operation
▶ In order to ensure trouble-free operation, read these instructions
carefully.
▶ Risk of scalding!
During operation of this storage tank temperatures over 60 °C can occur.
Servicing
▶ Only original spare parts must be used with this appliance.
Installing the buffer tank
The buffer tank should be installed on a flat floor surface. Ensure that the
bottom of the tank is fully in contact with the floor. Care should be taken
not to damage the metal casing of the tank.
Ensure that the floor is dry and the outside of the buffer tank cannot get wet
during its lifetime. The insulation will be damaged if left in contact with
water.
If the buffer tank cannot be mounted on a flat floor surface (for example if
the tank is mounted on a wall frame) the tank must first be placed on top of a
suitable metal plate. The bottom of the tank must be fully in contact with the
metal plate and completely cover the tank bottom.
Product information
2.1 Declaration of Conformity
The design and operating characteristics of this product comply with the
British, European and supplementary national requirements.
The UKCA and CE markings declare that the product complies with all the applicable British and European legislation, which is stipulated by attaching these markings.
You can request the complete text of the Declaration of Conformity from the UK
address indicated in this document.
2.2 GB Importer
Bosch Thermotechnology Ltd
Cotswold Way, Warndon
Worcester WR4 9SW / UK
2.3 Simplified UK/EU Declaration of conformity regarding radio
equipment
Bosch Thermotechnik GmbH hereby declares, that the Climate 2000 product
described in these instructions complies with the Directive UK S.I. 2017/1206
(UK) 2014/53/EU.
You can request the complete text of the UK/EU Declaration of Conformity from the UK address indicated in this document.
2.4 Regulations
In order to ensure installation and operation of the product in accordance
with the regulations, please observe all the applicable national and regional
regulations as well as all technical rules and guidelines.
You can find a list of the most relevant British and European directives and
regulations in the table below.
| EU legislation | UK legislation |
|---|---|
| Electromagnetic Compatibility – Directive 2014/30/EU | Electromagnetic |
Compatibility Regulations 2016
Low Voltage Directive 2014/35| Electrical Equipment (Safety) Regulations 2016
Radio Equipment – Directive 2014/53/EU| Radio Equipment Regulations 2017
Pressure Equipment – Directive 2014/68/EU| Pressure Equipment (Safety)
Regulations 2016
Gas Appliances – Regulation (EU) 2016/426| Regulation 2016/426 on gas
appliances as brought into UK law and amended
Machinery Directive 2006/42/EC| Supply of Machinery (Safety) Regulations 2008
Ecodesign Directive 2009/125/EC| The Ecodesign for Energy-Related Products
Regulations 2010
Energy Labelling Regulation (EU) 2017/1369| Energy Labelling Regulation (EU)
2017/1369 (as retained in UK law and amended)
Restriction of the Use of certain Hazardous Substances in Eletrical and
Electronic Equipment (RoHS)
– Directive 2002/95/EC| The Restriction of the Use of Certain Hazardous
Substances in Eletrical and Electronic Equipment Regulations 2012
European Directive 2012/19/EC on old electronic and electrical appliances|
(UK) Waste Electrical and Electronic Equipment Regulations 2013 (as ammended)
2.5 Use
The storage tank is designed to act as a buffer for the heating system and is
ideally suited to heat pump applications.
WARNING:
▶ Do not use the storage tank in conjunction with permeable pipe work.
2.6 Intended use
The storage tank must only be filled with heating water and must only be used
in sealed heating systems which are designed for use with heat pumps. Any
other use is an infringement of use for intended purpose.
Any damage that may result is excluded from liability.
Not for use as a method of potable hot water (Domestic Hot Water) storage.
2.7 Scope for delivery
Fig. 1 Primary water storage tank
- V1 / V2
- Sensor cable retaining clip
- R1 / R2
- Sensor pocket (for flow temperature sensor)
- Insulation
The sensor pocket is for the installation of the heat pump temperature sensor.
2.8 Dimensions and connections
| For parallel tank connections: | For series tank connections: |
|---|---|
| V1 | flow (heat pump) |
| V2 | flow (heating) |
| R1 | return (heat pump) |
required)
R2| return (heating)
M1| measuring point for flow temperature sensor| EL| drain valve
EL| drain valve| C1| sensor cable retaining clip
Table 3
2.9 Technical data
Storage tank|
---|---
storage volume (heating water)| L| 50
flow V1, V2| R ¾
return R1, R2| R ¾
measuring point M1| R ½
maximum heating water temperature| °C| 95
max. heating water working pressure| bar| 3
Additional data:
weight (empty)| kg| 24
weight (full)| kg| 74
Installation regulations
3.1 Buffer storage tank installation
The buffer storage tank should be installed on a flat floor surface. Ensure
that the bottom of the tank is fully in contact with the floor. Care should be
taken not to damage the metal casing of the tank.
Ensure that the floor is dry and the outside of the storage tank cannot get
wet during its lifetime. The insulation will be damaged if left in contact
with water.
If the buffer storage tank cannot be mounted on a flat floor surface (for
example if the tank is mounted on a wall frame) the tank must first be placed
on top of a suitable metal plate. The bottom of the tank must be fully in
contact with the metal plate and completely cover the tank bottom.
Transport
4.1 Means of transport
DANGER: Risk of injury from carrying heavy weights!
▶ Do not try to lift or carry the storage tank alone.
CAUTION: Damage from inappropriate protection during transport!
▶ For transport, use appropriate means, e. g. a sack truck or pump truck with
a tension belt.
▶ Protect the storage tank against tilting and transport to its installation
location standing upright and in its packaging.
▶ Do not remove the storage tank packaging before it is in the installation
location.
4.2 Industrial location
NOTICE: Protect from freezing!
▶ Place storage tank in a frost-proof room.
▶ Ensure the tank is frost protected.
▶ Insulate pipes with class O insulation.
NOTICE: Damage from corrosion!
▶ Use the storage tank in sealed systems only.
▶ Observe minimum clearances.
▶ Place storage tank on an even and load-bearing ground.
▶ In damp rooms: put storage tank on a platform.
▶ Recommend minimum clearance of 25mm around the tank.
▶ Ensure you have adequate access to the drain valve.
Fitting
5.1 Fitting the temperature sensor
▶ Slide the temperature sensor into the sensor pocket, use heat paste to
ensure a good contact. Fit the sensor cable into the cable retaining clip with
a small loop to ensuring the cable is not pulled tight.
Ensure that the sensor area has contact with the sensor pocket area for the sensor‘s full length.
Sensor positions:
- M1 = Measuring point for flow temperature sensor top
- C1 = Sensor cable retaining clip
For information on the sensor refer to the documentation of your heat pump or of the control unit.
▶ Lay the sensor lead through open cable retaining clip, ensuring that a small loop of cable exists between the clip and the sensor, and close the clip firmly on the cable.
[V1] Flow (Heat pump)
[V2] Flow (Heating)
[R1] Return (Heat pump)
[R2] Return (Heating)
5.2 Connection of the storage tank to the heat pump and heating system
DANGER: Risk of fire from soldering and welding!
▶ Take suitable safety measures when soldering and welding.
▶ When sizing the heating system expansion vessel, take the storage tank
volume into consideration.
▶ For further information about system layout refer to installation
instructions of main appliance.
NOTICE: Risk of damage to non heat-resistant installation materials (e. g.
plastic piping)!
▶ Use installation material which is heat resistant to ≥ 80 °C.
[1] Heat pump
[2] V1
[3] R1
[4] Pump (An additional external circulation pump, for each heating system,
may be needed. This will be fitted to the flow outlet from the tank to the
heating system as shown)| [5] V2
[6] R2
[7] Storage tank
[8] Heating system
[9] 3-way-valve
[10] Additional heating system (in case of expansion)
---|---
▶ Ensure pipe work is adequately supported
▶ Ensure that the correct connections are made to the storage tank.
▶ Check all connections for tightness.
NOTICE: Fitting the air vent
▶ A suitable air vent should be fitted to the top of the tank on either V1 or
V2 pipes.
Initial operation
6.1 Customer hand over
The installer must explain to the customer (user) the mode of operation and
the handling of the heating appliance and the storage tank.
▶ Hand all enclosed documents over to the user.
6.2 Start of operation
Start of operation has to be done by the installer of the heating system or by
a technical expert.
▶ Start the operation of the heat pump in accordance to the manufacturers
information, installation or instruction manuals.
De-commissioning
7.1 De-commissioning the system when there is a risk of frost
▶ When the heating system is not in use and there is a risk of frost,
decommission the heating system in accordance with the heat pump (or other
accessories) instruction manual.
7.2 Environmental protection
Environmental protection is a key company commitment for the Bosch Group.
Quality of performance, efficiency and environmental protection are our long
term objectives. Legal and corporate guidelines are strictly adhered to.
To protect the environment we utilise the most efficient processes, technology
and materials
Packaging
We are dedicated in adhering to country specific disposal standards as they
relate to packaging to ensure optimum recycling. All packaging materials are
environmentally friendly and can be recycled.
Obsolete equipment
Obsolete products contain raw materials that can be recycled.
The components are easily separated and are clearly marked. In this manner the
individual components are easily sorted and added into the recycling and
disposal systems.
7.3 Disposal
▶ Dispose of the storage tank packaging in an environmentally sound method.
▶ Dispose of the storage tank in an environmentally sound method at an
appropriate disposal facility.
Servicing
Apart from occasional visual inspection, storage tanks do not require any
particular servicing or cleaning.
▶ Use original spare parts only!
Spare parts
| Sensor pocket R ½ 95mm | 5 446 142 |
|---|---|
| Drain valve ½ inch | 6 300 597 4 |
| Installation & servicing instructions primarywater storage 50 litres | 6 720 |
803 559 0
Table 5
Emptying
WARNING: Risk of scalding!
Hot water can cause severe scalding
▶ Allow the storage tank time to cool down after decommissioning.
▶ If required, empty the storage tank via the drain valve at the bottom of the tank, see fig. 2, page 34.
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BT 50 HP – 6 720 821 241 (2023/06)
Bosch Thermotechnik GmbH
Junkersstrasse 20-24
73249 Wernau, Germany
www.bosch-thermotechnology.com