809329

Worcester Greenstore Ground Source Handleiding

9
Verklein
Vergroot
Pagina terug
1/28
Pagina verder
UK/IE
USER MANUAL
USER INSTRUCTIONS
WORCESTER GREENSTORE LECP GROUND SOURCE HEAT
PUMP IN EITHER SYSTEM OR COMBI VARIANTS
6 720 802 172-01.1I
6KW, 7KW, 9KW AND 11KW
6 720 802 172 (2012/06) en
CONTENTS
6 720 802 172 (2012/06)2
CONTENTS
1 Key to symbols and safety instructions . . . . . . . . . . . . . . . . . . . 2
1.1 Key to symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.2 Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 The Benchmark Scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3 Ground source heat pump operation . . . . . . . . . . . . . . . . . . . . . 3
3.1 Selection and sizing of a heat pump . . . . . . . . . . . . . . . . . 3
4 Heat emitters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
5 Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
5.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
5.2 Heat pump function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
6 Energy measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
7 Control unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
7.1 Additional heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
7.2 Hot water production . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
8 Control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
8.1 Panel overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
8.2 On/Off button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
8.3 Status lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
8.4 Menu display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
8.5 Menu button and menu dial . . . . . . . . . . . . . . . . . . . . . . . 6
8.6 Return button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
8.7 Mode button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
8.8 Info button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
9 Menu overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
10 Menu navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
10.1 Initial menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
10.2 Finding desired function and changing values . . . . . . . . 7
10.3 Help information in the menu display . . . . . . . . . . . . . . . 8
11 Information from the heat pump . . . . . . . . . . . . . . . . . . . . . . . . . 9
11.1 Operating information . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
11.2 Info button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
11.3 Operating symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
12 Heating, general . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
12.1 Circuits for heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
12.2 Control methods for heating . . . . . . . . . . . . . . . . . . . . . 10
12.3 Time control for heating . . . . . . . . . . . . . . . . . . . . . . . . 10
12.4 Operating modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
13 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
13.1 Mode button functions . . . . . . . . . . . . . . . . . . . . . . . . . . 11
13.2 Room temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
13.3 Hot water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
13.4 Holiday . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
13.5 Energy measurements . . . . . . . . . . . . . . . . . . . . . . . . . . 16
13.6 Timers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
13.7 External control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
13.8 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
13.9 Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
13.10 Access level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
13.11 Return to factory settings . . . . . . . . . . . . . . . . . . . . . . . . 18
14 Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
14.1 Control unit and room controller alarm lamp . . . . . . . . 18
14.2 Alarm buzzer at alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
14.3 Acknowledgement of alarms . . . . . . . . . . . . . . . . . . . . . 18
14.4 Alarm timer, alarm mode . . . . . . . . . . . . . . . . . . . . . . . . 18
14.5 Alarm categories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
14.6 Alarm window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
14.7 Alarm functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
14.8 Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
14.9 Information log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
15 Energy savings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
16 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
16.1 Checking the safety valves . . . . . . . . . . . . . . . . . . . . . . . 24
16.2 Expansion vessel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
16.3 Particle filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
17 The guarantee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
1 KEY TO SYMBOLS AND SAFETY
INSTRUCTIONS
1.1 KEY TO SYMBOLS
WARNINGS
The following keywords are defined and can be used in this document:
•NOTE indicates a situation that could result in damage to property or
equipment.
•CAUTION indicates a situation that could result in minor to medium
injury.
•WARNING indicates a situation that could result in severe injury or
death.
•DANGER indicates a situation that will result in severe injury or death.
Warnings in this document are identified by a warning
triangle printed against a grey background.
Keywords at the start of a warning indicate the type and
seriousness of the ensuing risk if measures to prevent
the risk are not taken.
THE BENCHMARK SCHEME
6 720 802 172 (2012/06) 3
IMPORTANT INFORMATION
ADDITIONAL SYMBOLS
1.2 SAFETY INSTRUCTIONS
GENERAL
▶ Read the guide carefully and keep it to hand for future use.
INSTALLATION AND COMMISSIONING
▶ The heat pump may be installed and put into operation only by a
competent person.
RISK OF DAMAGE DUE TO OPERATOR ERROR
Operator errors can result in injury and damage to property.
▶ Ensure that children never operate this appliance unsupervised or
play with it.
▶ Ensure that only personnel who can operate this appliance correctly
have access to it.
SERVICE AND MAINTENANCE
▶ Only competent persons may carry out repairs. Incorrect repairs can
lead to serious risks to the user, and a reduction in savings.
▶ Only use original spare parts.
▶ Service and maintenance must be carried out annually by a competent
person.
2 THE BENCHMARK SCHEME
Worcester, Bosch Group is a licensed member of the Benchmark
Scheme which aims to improve the standards of installation and
commissioning of domestic heating and hot water systems in the UK and
to encourage regular servicing to optimise safety, efficiency,
performance and to comply with the F gas regulations.
Please ensure that the installer has fully completed the Benchmark
Checklist on the inside back pages of the installation instructions
supplied with the product and that you have signed it to say that you
have received a full and clear explanation of its operation. The installer is
legally required to complete a commissioning checklist as a means of
complying with the appropriate Building Regulations (England and
Wales).
All installations should be made in accordance with MCS/MIS 3005.
This product should be serviced regularly to optimise its safety,
efficiency and performance. The service engineer should complete the
relevant Service Record on the Benchmark Checklist after each service.
The Benchmark Checklist may be required in the event of any warranty
work and as supporting documentation relating to home improvements
in the optional documents section of the Home Information Pack.
3 GROUND SOURCE HEAT PUMP OPERATION
As the outside temperature gets colder, the heat demand of a house
increases and the output of a ground source heat pump will decrease.
Eventually it becomes so cold outside that the output of the heat pump
alone is not able to heat the building effectively. The Greestore range of
ground source heat pumps therefore allows for monoenergetic and
bivalent operation.
Monoenergetic means that in the event of very low external
temperatures a 3-stage electrical booster heater in the indoor unit will
automatically be activated to provide additional heat if required and
keep the building warm.
In bivalent operation a second heating appliance (e.g. gas or oil boiler) is
used to supplement the heat load.
3.1 SELECTION AND SIZING OF A HEAT PUMP
It is essential that heat pump systems are designed to operate efficiently
in order to meet the building heating needs and the expectations of the
customer. In order to achieve this, the following design activities must
be completed prior to installation:-
• Pre-design assessment - Determine the suitability of a heat pump
system for the building based on the customer requirements,
expectations and building type.
• Detailed design - Complete building heat loss calculations and
domestic hot water usage assessment.
• Specification - Select a suitable heat pump and system components
based on the detailed design. Calculate and communicate the
predicted energy use and running costs of the system to the
customer.
A suitable design methodology for the above is detailed in MIS3005, the
Microgeneration Certification Scheme (MCS) heat pump installer
standard. Worcester, Bosch Group recommended that this standard is
followed for heat pump systems. The standard covers the design,
installation and commissioning requirements to ensure that 100% of the
building heat loss can be met efficiently by the heat pump system. A heat
pump system must be designed to this standard to be eligible for
government financial incentives e.g Renewable Heat Incentive (RHI).
The Worcester Bosch Group design team offer a heat pump sizing
service which is MCS compliant. To request this service, download and
submit the form using the guidance notes from our website address:
www.worcester-bosch.co.uk/hp
4 HEAT EMITTERS
Worcester, Bosch Group heat pumps are fitted with weather
compensation controls as standard. However, for a heat pump to
perform to its highest energy efficiency, the central heating emitter
circuit should be designed so that the flow temperature is as low as
possible.
As a guide, the system should be designed using the following maximum
flow temperatures;
• Underfloor heating: 35-40 °C
• Radiators: 45-50 °C
If underfloor heating has been installed, it is important to remember that
the underfloor system designer should have been informed that the heat
source will be from an air source heat pump. It is also important to
remember that radiators should have been correctly sized to work
effectively with lower flow temperatures.
A tool to aid installers and end users to understand the relevance of
building heat loss and heat emitter selection on heat pump performance,
has been created by the joint trade associations. The 'Heat Emitter
Guide' can be downloaded from the following website:
www.microgenerationcertification.org
This symbol indicates important information where
there is no risk to people or property.
Symbol Explanation
▶ Step in an action sequence
Cross-reference to another part of the document
• List entry
– List entry (second level)
Table 1
USE
6 720 802 172 (2012/06)4
5USE
5.1 GENERAL
The Worcester Greenstore series is equipped with the latest generation
low energy circulation pumps on both the cold and hot sides. Low energy
circulation pumps are being introduced in line with future European
legislation. They are designed to improve the system efficiency.
When purchasing the equipment, the installation engineer must make an
energy estimate and assess the degree of energy coverage for the heat
pump system in line with current guide lines.
Greenstore Combi/System is a series of heat pumps that use stored
solar energy in order to provide water-based heating and hot water.
Fig. 1 Stored solar energy
[1] Rock heat
[2] Soil heat
[3] Lake heat
Greenstore 6-11 Combi are heat pumps with integrated domestic hot
water cylinders.
Greenstore 6-11 System are heat pumps designed to be supplemented
with external domestic hot water cylinders.
Once the heat pump has been installed and started, there are a number
of points that should be checked regularly. This may concern an alarm
triggering or performing basic maintenance actions. If the problem is
repeated, you should contact your installer.
5.2 HEAT PUMP FUNCTION
The heat pump consists of four main parts:
•Evaporator
Evaporates the refrigerant to gas and at the same time transfers the
heat from the collector to the refrigerant circuit.
•Condenser
Condenses the gas to fluid again and transfers the heat to the heating
system.
•Expansion valve
Lowers the pressure of the refrigerant.
•Compressor
Increases the pressure of the refrigerant.
These four main parts are linked in three circuits. A refrigerant circulates
in the heat pump, which in some parts of the circuit is in a liquid state and
in other parts in a gas state.
123
6 720 614 540-01.2I
ENERGY MEASUREMENT
6 720 802 172 (2012/06) 5
Fig. 2 Heat pump description
[1] Collector circuit pump
[2] Evaporator
[3] Compressor
[4] Condenser
[5] Heat pump domestic hot water cylinder
[6] Floor heating
[7] Radiator
[8] Heat pump
[9] Heat carrier pump
[10] Expansion valve
[11] Borehole
[12] Geothermal heating coil (horizontal loop/compact collector)
• The collector circuit fluid, which is a mixture of water and anti-freeze,
circulates in the borehole/geothermal heating coil in a plastic hose.
The fluid collects stored solar energy and with the help of the collector
circuit pump leads it into the heat pump and to the evaporator. The
temperature is then approximately 0 °C.
• In the evaporator the collector circuit fluid meets the refrigerant. The
refrigerant is then in a fluid state and is at approximately -10 °C. When
the refrigerant meets the zero degree heat transfer fluid, it starts to
boil. Vapour forms and is led into the compressor. The temperature of
the vapour is approximately 0 °C
• In the compressor, the pressure on the refrigerant increases and the
temperature of the vapour rises to approximately +100 °C. The hot
vapour is then forced into the compressor.
• In the condenser the heat is transferred to the house heating system
(radiators and underfloor heating) and the hot water system. The
vapour cools and liquefies. The pressure in the refrigerant is still high
when it is led on to the expansion valve.
• The pressure of the refrigerant is reduced in the expansion valve. The
temperature also drops to approximately -10 °C. When the refrigerant
passes the evaporator it changes to vapour again.
• The collector circuit is led out from the heat pump to the borehole/
geothermal heating coil to collect new stored solar energy. The
temperature of the fluid is then approximately -3 °C.
6 ENERGY MEASUREMENT
The control unit has the ability to measure the amount of energy that is
produced by the heat pump unit. The calculation assumes that, for
example, the heat pump is correctly installed and that the flow and
temperatures on the hot and cold sides are adjusted as recommended.
The value should therefore be regarded as an estimate of the actual
emitted output. The margin of error in the calculation is normally put at
5-10%.
In addition, the energy output is affected by the outdoor temperature,
the settings for the thermostat and room controls and heat pump usage.
Ventilation, indoor temperature and hot water demand can play a
decisive role.
1 2 3 4 5
6
7
8
11
910
12
6 720 614 540-02.3I
INFORMATION FROM THE HEAT PUMP
6 720 802 172 (2012/06) 9
11 INFORMATION FROM THE HEAT PUMP
The heat pump provides information about temperatures, operating
modes, possible alarms, etc.
11.1 OPERATING INFORMATION
The Initial menu shows different temperatures and times of day.
Different operating symbols show the functions for which there are
demand or which are in operation.
Fig. 17
11.2 INFO BUTTON
▶Press in the Initial menu.
Detailed information about temperatures, operating mode, etc., is
displayed.
▶ Turn the dial to see all the information.
▶ Press to return to the initial menu.
▶Press in a menu display.
The detailed information is displayed for as long as is pressed.
▶ Release .
The menu display is displayed.
Fig. 18
11.3 OPERATING SYMBOLS
Symbols for different functions and components for which there is a
demand or which are in operation are displayed in the bottom right
corner of the Initial menu.
Fig. 19 Operating symbols
[1] Compressor
[2] Alarm (compressor, additional heat)
[3] Heating
[4] Electric additional heat
[5] Mixed additional heat (option)
[6] Hot water
[7] Extra hot water
[8] Hot water peak
[9] Pool (option)
[10] Solar (option)
[11] Screed drying
[12] External control
[13] Program/time control
[14] Party
[15] Holiday
[16] Information log
6 720 614 789-01.1I
6 720 643 415-12.1I
… 9 …

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