Buderus P120.5 Buffer Cylinder Instruction Manual
- June 9, 2024
- Buderus
Table of Contents
Buderus P120.5 Buffer Cylinder Instruction Manual
1 Explanation of symbols and general safety instructions
1.1 Explanation of symbols
Warnings
⚠ Warnings in the text are indicated by a warning triangle. In addition,
signal words are used to indicate the type and seriousness of the ensuing risk
if measures for minimising the danger are not taken.
The following signal words are defined and can be used in this document:
- NOTICE indicates that material losses may occur.
- CAUTION indicates that minor to medium personal injury may occur.
- WARNING indicates that severe or life-threatening personal injury may occur.
- DANGER indicates that severe personal injury or death may occur.
Important information
ℹ Important information where there is no danger to people or property is
indicated with the adjacent symbol.
Additional symbols
1.2 General safety instructions
General These installation and maintenance instructions are intended for
contractors.
Failure to observe the safety instructions can result in serious injuries.
▶ Read and follow the safety instructions.
▶ Observe these installation and maintenance instructions to ensure
trouble-free operation.
▶ Install and commission heat sources and their accessories according to the
relevant installation instructions.
▶ To reduce oxygen permeation and therefore corrosion to a minimum, do not use
vapour-permeable components! Never use open expansion vessels.
▶ Never close the safety valve.
2 Product information
2.1 Correct use
Buffer cylinders may only be filled with heating water.
Only use buffer cylinders in sealed heating systems.
Operate the buffer cylinders P120.5, P200.5, P300.5 preferably in combination
with heat pumps.
Any other use is considered incorrect. Any damage that may result is excluded
from liability.
2.2 Scope of Delivery
- Buffer cylinder
- Installation and servicing instructions
2.3 Technical data
- Dimensions and specifications ( Fig. 1, page 42)
2.4 Product description
2.5 Data plate
The data plate is located at the top of the rear of the buffer cylinder and includes the following details:
Item Description
- Type
- Serial number
- Available capacity (total)
- Standby heat loss
- Year of manufacture
- Max. heating water flow temperature
- 17 Max. heating water operating pressure
Table 5 Data plate
2.6 Product datasheet on energy consumption
The following product data complies with the requirements of EU Regulations 814/2013 and 812/2013 as supplement to the Directive 2017/1369/ EU.
3 Regulations
Observe the following directives and standards:
-
Local regulations
-
EnEG (in Germany)
-
EnEV (in Germany)
Installation of, and equipment for, heating and water heating systems: -
DIN and EN standards
– DIN 4753, part 1: DHW cylinders and DHW heating systems for potable and process water; requirements, identification,
equipment and testing
– DIN 4753, part 8: Thermal insulation of DHW cylinders up to 1000 l nominal capacity – requirements and testing (product
standard)
– DIN EN 12 828: Heating systems in buildings – engineering hot water heating systems
– DIN 18 380: VOB1), heating systems and central DHW systems
– DIN 18 381: VOB1), gas, water and sewage installation work
within buildings
– VDE regulations.
4 Transport
▶Secure the buffer cylinder to prevent it falling during transport. ▶Transport the tank ( Fig. 3, page 43).
5 Fitting
▶Check that the buffer cylinder is complete and undamaged.
5.1 Installation location
NOTICE: System damage through inadequate load bearing capacity of the
supporting surface or unsuitable substrate. Ensure that the installation area
is level and offers
sufficient load-bearing capacity.
Site the buffer cylinder on a plinth if there is a risk that water may collect
at the installation site.
Site the buffer cylinder in dry internal areas that are free from the risk of
frost.
Only with P200.5, P300.5: Observe the minimum wall clearances inside the
installation room
( Fig. 5, page 44).
5.2 Installing the buffer cylinder
Stand the buffer cylinder upright and level it ( Fig. 6 to Fig. 7,
page 44). Remove the protective caps. Apply Teflon tape or Teflon string (
Fig. 8, page 44).
5.3 Hydraulic connection
⚠ DANGER: Risk of fire from soldering and welding. Take appropriate protective measures when soldering and welding as the thermal insulation is combustible (for example, cover the thermal insulation).
- VOB: German contract construction procedures Part C: General technical specifications in construction contracts (ATV)
⚠ CAUTION: Water damage resulting from open drain (only P200.5, P300.5)!
Connect the drain to the bottom cylinder connection
( Fig. 2, [3], page 43) prior to filling the cylinder.
When sizing the heating system expansion vessel, take the cylinder capacity
into consideration.
⚠ CAUTION: Risk of damage to non heat-resistant installation materials (e. g. plastic piping)! Use installation material which is heat resistant to 80 °C.
▶ Install pipework runs so that natural circulation is prevented.
▶ Install all pipes free of stress.
▶ During filling, open the ventilation on the cylinder ( Fig. 2, [10], page
43).
Only fill buffer cylinders with potable water.
The test pressure must not exceed 3 bar positive pressure. Carry out tightness
test ( Fig. 16, page 46).
System components Function diagram for connecting the buffer cylinder to the
heat pump ( Fig. 9, page 45).
Item Description
- Heat pump
- Heating system
- Additional heating system (in case of expansion)
- Pump
- 3-way mixer
- Buffer cylinder
Table 7 System components ( Fig. 9, page 45)
5.4 Installing temperature sensors
Fit the temperature sensors ( Fig. 10 and 11, page 45).
Ensure that the sensor area has contact with the sensor pocket area for the sensor`s full length.
Note sensor positions ( Fig. 2, [5] and [9], page 43). Observe heat pump or control unit installation instructions.
6 Commissioning
NOTICE: Cylinder damage resulting from positive pressure! Never close the
blow-off line of the safety relief valve.
▶ Commission all assemblies and accessories as specified in the
manufacturer’s technical documentation. Instructing users
▶ Explain the operation and handling of the heating system and buffer
cylinder, making a particular point of safety-relevant features.
▶ Explain the function and checking of the safety valve.
▶ Hand all enclosed documents over to the owner/operator.
▶ Highlight the following for the user:
– Water may be discharged from the safety valve during initial
heat-up.
– The safety valve discharge pipe must always be kept open.
– Where there is a risk of frost and when the user is briefly away: Keep the
heating system in operation and select the lowest possible water temperature.
7 Environmental protection/disposal
Environmental protection is a key commitment of the Bosch Group. Quality of
products, efficiency and environmental protection are equally important
objectives for us. Laws and requirements aimed at protecting the environment
are strictly adhered to. To protect the environment we will, subject to
economical aspects, use the best possible technology and materials.
Packaging Where packaging is concerned, we participate in country-specific
recycling processes that ensure optimum recycling. All of our packaging
materials are environmentally compatible and can be recycled.
Old appliance Old appliances contain materials that should be recycled. The
relevant assemblies are easy to separate, and all plastics are identified. In
this manner the individual components are easily sorted and added into the
recycling and disposal systems.
8 Maintenance
With buffer cylinders, apart from visual checks, no particular maintenance or
cleaning work is necessary. Check all connections externally for tightness
once a year. In the event of a fault, contact an authorised contractor or the
service
department.
9 Decommissioning
WARNING: Risk of scalding from hot water. Allow the buffer cylinder to cool down sufficiently.
▶ Decommission the buffer cylinder together with the heat pump.
▶ Switch off the temperature controller at the control unit.
▶ Drain the buffer cylinder:
– Shut off the buffer cylinder (→ Fig. 17, page 47).
– Open the air vent valve (→ Fig. 2,[10], page 43).
– P120.5: drain using the drain valve on the buffer cylinder
(→ Fig. 2, [6], page 43).
– P200.5, P300.5: drain using own drain (→ Fig. 18, page 47).
▶ Shut down all assemblies and accessories of the heating system as
specified in the manufacturer’s technical documentation.
▶ Close the shut-off valves (→ Fig. 18, page 47).
10 Data Protection Notice
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www.buderus.com
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