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RHI Training Voucher Scheme. Acknowledgements:. The Renewable H eat I ncentive T raining S upport S cheme gratefully acknowledges the help of BEAMA and in particular the following member companies: Daikin Glen Dimplex Vaillant - PowerPoint PPT Presentation
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RHI Training Voucher Scheme
The Renewable Heat Incentive Training Support Scheme gratefully acknowledges the help of BEAMA and in particular the following member companies:
Daikin Glen Dimplex Vaillant
The following presentation slides highlight some important changes to the MCS standards and reinforce some areas that, whilst are not new, are areas that can be easily overlooked.
Acknowledgements:
Objective – CPD to ensure heat pump training is being delivered to the latest version of MIS3005
4.2 – Design and Installation• The following principles shall be met when designing, specifying and installing
heat pump systems• Trainers should be able explain the design calculation method used in
Appendix E and complete the MCS Heat Pump Compliance Certificate, taking particular note of the guidance notes
• Manufacturers tools may be used to provided the Compliance Certificate as an output from the MIS 3005 tool
• Trainers should be able to explain the importance of considering the effects of any up lift factors or considerations such as
MIS 3005 V4.0
Updates to MIS3005 V4.0
MIS Clause Trainer Candidate How
4.2.1/4.2.1b Shall demonstrate heat loss off one room to EN12831
Shall complete heat loss of one room to EN12831 and understand the effect of incorrect material and increase room temperatures
Use manufacturers heat loss tool and information from a drawing, three examples to be completeda) Cavity wall, double glazed and 21oCb) Solid wall, single glazed and 21oCc) Solid wall, single glazed and 23oC
4.2.1a Shall demonstrate the difference peak heat requirements when intermittent and night set back are applied
Shall be given heat loss of a property to EN12831 and apply intermittent heating and night set back and understand the increase in energy and cost
Use manufacturers heat loss tool to calculate increase in energy and costd) Add 3oC night set back ( 4 hour reheat)e) Modify example (d) to 1 hour reheat
4.2.13 Shall demonstrate the importance of using the water exiting from the heat pump and the value to use for the star rating
Shall be given heat loss of a property to EN12831 and modify the emitter systems and understand the increase in energy and cost (using HEG)
Use manufacturers heat loss tool to calculate increase in energy and costf) Calculate energy and cost with Radiator 50oC systemg) Calculate energy and cost with UFH 35oC systemh) Calculate energy and cost with mixed Radiator and UFH
4.2 Shall demonstrate journey through Appendix E
Shall use manufacturers tools cross referencing Appendix E and produce compliance certificate output
i)Use manufacturers heat loss tool to calculate to generate heat pump compliance certificate , input Appendix E f)Complete example of RHI calculations in Appendix E
What are Permitted Development Rights?
Overview of Permitted Development Rights across the UK
MCS 020 – Planning Standard
Internal Use 5
Permitted Development Rights
What are Permitted Development Rights?
Internal Use 6
Permitted Development Rights allow homeowners to make certain types of minor changes to their house without needing
to apply for planning permission
Certain types of renewable energy technologies are covered
Different rules in the four Home Nations
Always consult your local planning authority for guidance
Permitted Development Rights (and planning permission) do not provide protection against enforcement action under other legislation
Permitted Development Rights – Wales and Northern Ireland
Internal Use 7
Currently – planning permission is required to install a domestic ASHP
In Wales: Welsh Government has sanctioned drafting of
legislation to extend permitted development rights to domestic ASHP
No decision made by National Assembly of Wales yet
Lobbying ongoing to promote a consistent approach to that in England
In Northern Ireland: No legislation is planned for the near future
Permitted Development Rights – Scotland
Internal Use 8
Only one ASHP can be installed
Must be >100m from the curtilage of another dwelling
If in a conservation area, ASHP must not be visible from a road
Must not be in a World Heritage Site or listed building
Must consult planning authority to see if approval is needed for the siting and appearance of the ASHP
Permitted Development Rights – England
Internal Use 9
Came into force on 1st December 2011
Installation must comply with MCS 020
Only one ASHP can be installed
No wind turbine at the property
Heat pump used solely for heating (and DHW)
Permitted Development Rights – England
Internal Use 10
Outdoor unit must not be: > 0.6m³ in volume Within 1m of property boundary or the
edge of a flat roof On a pitched roof On a site designated as a scheduled
monument or a listed building On a wall that fronts the highway Above the level of ground storey
Additional rules for conservation area and World Heritage Site
Contact your local planning authority
MCS 020 Planning Standard
Internal Use 11
Must be complied with if ASHP is to be permitted development
Installation company has the responsibility to ensure compliance with MCS 020
Calculations can be checked by the MCS Certification Body and the local planning authority
Both the product and the installer must be MCS accredited
MCS 020 Planning Standard
Internal Use 12
Calculation procedure to determine whether the permitted development noise limit of 42 dB LAeq,5mins is met at the assessment position
Installer needs to know: A-weighted sound power level of the heat pump Number of reflecting surfaces within one metre of the
heat pump Distance from heat pump to the assessment position If there is a solid barrier between the heat pump and
the assessment position
Habitable room is a room other than a bathroom, shower room, water
closet or kitchen
MCS 020 – Assessment position
Internal Use 13
Keep detailed notes of the assessment position e.g. address, sketch, etc.
Assessment position is 1m away from the centre point of any doors/windows in the neighbour’s nearest habitable room
1m
MCS 020 – Calculation Procedure
Internal Use 14
Obtain the A-weighted sound power level of the heatpump from the manufacturer
The highest sound power level specified should be used (“low noise mode” should not be used)
STEP 1
Example: Manufacturer’s data states the sound power
level is 55 dB(A)
MCS 020 – Calculation Procedure
Internal Use 15
Establish the directivity “Q” of the heat pump noise i.e. how many reflective surfaces (including the ground) are within 1 metre of the heat pump
STEP 2
Directivity ‘Q’ = Reflective Surfaces
2 = Freestanding4 = One Surface8 = Two Surfaces
Example: Heat pump is to be installed on the ground against a single wall => the
directivity (Q) of the heat pump noise is Q4
MCS 020 – Calculation Procedure
Internal Use 16
Measure distance from heat pump to the assessment position
STEP 3
Assessment positionA position one metre external to the centre point of any door or
window to a habitable room of a neighbouring property measured perpendicular to the plane of the door or window
Example: Distance between heat pump and assessment
position is 4 metres
MCS 020 – Calculation Procedure
Internal Use 17
Obtain dB reduction value (relative to distance and reflective surfaces)
STEP 4
Example: At 4 metres, Q4 =
Distance from Heat Pump (metres) (STEP 3 RESULT)
1 1.5 2 3 4 5 6 8 10 12 15 20 25 30
Q (Step 2 Result)
2 -8 -11 -14 -17 -20 -21 -23 -26 -28 -29 -31 -34 -36 -37
4 -5 -8 -11 -14 -17 -19 -20 -23 -25 -26 -28 -31 -33 -34
8 -2 -5 -8 -11 -14 -16 -17 -20 -22 -23 -25 -28 -30 -31
-17 dB
-17
MCS 020 – Calculation Procedure
Establish whether there is a solid barrier between the heat pump and the assessment position to obtain an attenuation value
STEP 5
a) For a solid barrier (e.g. brick wall or fence) that completely obscures an installer’s vision of an assessment position from the top edge of the ASHP
-10
b) Where a solid barrier completely obscures an installer’s vision of an assessment position from the top or side edges of the ASHP, but moving a maximum distance of 25cm in any direction to the ASHP allows an assessment position to be seen
-5
a) For a solid barrier (e.g. brick wall or fence) that completely obscures an installer’s vision of an assessment position from the top edge of the ASHP
0
Internal Use 18
MCS 020 – Calculation Procedure
Internal Use 19
Calculate the sound pressure level from the heat pump at the assessment position
STEP 6
Example:
Sound pressure level at assessment position = (STEP 1) + (STEP 4) + (STEP 5)
= (55) + (-17) + (-5)= 55 - 17 - 5= 33dB (A) Lp
MCS 020 – Calculation Procedure
Internal Use 20
Determine the background noise level
STEP 7
For MCS 020, the background noise level in all locations is always assumed to be 40 dB(A) Lp
MCS 020 – Calculation Procedure
Internal Use 21
Calculate the difference between background noise level (Step 7) and the heat pump sound pressure level at the assessment position (Step 6)
STEP 8
Difference:
= (STEP 7) – (STEP 6)
Example: = 40 dB(A) – 33 dB(A) = 7dB(A)
22
MCS 020 – Calculation Procedure
STEP 9
Obtain the decibel correction figure based on result from Step 8 Add this to whichever is the higher dB figure from STEP 6 and STEP 7Round this number up to the nearest whole number
Difference between the two noise levels (dB) (+/-)
Add this correction to the higher noise level
0 31 2.52 2.13 1.84 1.55 1.26 17 0.88 0.69 0.5
10 0.411 0.312 0.313 0.214 0.215 0.1
Example:
Step 8 = 7dBa Decibel correction = 0.8 dB Step 6 = 33dbA Step 7 = 40 dB(A) Corrected noise = 40.8 dB(A) Round up to 41 dB(A)
Internal Use 22
23
MCS 020 – Calculation Procedure
Is the FINAL RESULT (step 9) lower than the permitted development noise limit of 42 dB(A)?
STEP 10
YESThe ASHP will comply with the permitted development noise limit for this assessment position and may be permitted development (subject to compliance with other permitted development limitations/conditions and parts of this standard). NOTE - Other assessment positions may also need to be tested.
NOThe ASHP will not be permitted development. Installation may still go ahead if planning permission is granted by the local planning authority.
Internal Use 23
Sound calculation tools are available from many manufacturers
Internal Use 24
Designed to assist installers to assess the noise level from a
given manufacturers ASHP
Summary
Internal Use 25
Planning permission is required for ASHP in Wales and Northern Ireland
Permitted Development Rights exist in Scotland and England Different assessment criteria in both countries If the criteria is met, planning permission is not
required
In England, MCS installer must calculate noise limit based on MCS 020 Calculated at a specified assessment position – 1m
away from the window/door of a neighbouring property
Calculated figure must be less than 42 dB LAeq, 5mins
Always check with the local planning office
Insert title herePresented by: XXXXXX
Heat Emitter Guide MCS 021
Heat Emitter Guide is an integral component of the MCS assessment and forms the basis for estimating RHI income
Officially an MCS document [MCS 021]
Originally created by joint trade associations for use with MIS 3005
Can be used for existing emitter systems and new installations
Introduction
27
A tool to aid installers and end users to understand the relationship between flow temperature and SPF
MCS heat pump installer must communicate with the heat emitter designer to optimise the design of both systems
HEG is not a detailed design tool. Intended to stimulate a proper review of the dwelling-specific heat load and heat emitter design, leading to optimised performance and low running costs
The “Heat Emitter Guide” is not a substitute for accurate site-specific design carried out in accordance with national standards
Heat Emitter Guide [HEG]
28
Before the customer signs the contract, the installer shall, in writing:• Make the customer aware of all specific room heat losses (in W/m2);• Identify the type of emitter(s) to be used in the system;• Make the customer aware of the design emitter temperature based on the
worst performing room;• Agree with the customer the “Temperature Star Rating” for the design
emitter temperature, also making clear the maximum achievable “Temperature Star Rating”.
Additionally, before the customer signs the contract, the installer should:• Show the customer a relevant extract of the Heat Emitter Guide;• Explain the Heat Emitter Guide, including how it is possible to achieve a
higher system SPF;• Explain how the design emitter temperature will be achieved using the type of
emitter selected.
Important notes for MCS installers
29
Always design for the water flow temperature to be as low as possible to:• Achieve the highest possible SPF• Achieve the lowest possible running costs and CO2 emissions
New build properties – heating distribution system can be designed to work efficiently at the low water flow temperatures produced by a heat pump
Existing building – will existing heat emitters output sufficient heat at the lower flow temperature of the heat pump?• Check by calculation and by using the Heat Emitter Guide• Reduce the heat losses. It might then be possible to run heat emitters at a
lower temp• Change heat emitters e.g. increase size of radiators, install fan coil units/heat
pump convectors• If heat loss cannot be reduced and heat emitters cannot be changed, consider
a bivalent heat pump / boiler system instead
Selecting heat emitters for heat pump systems
30
1. For every room calculate the heat loss.
2. For a system with radiators, determine the rated output at mean water to air temperature difference of 50°C using Tables of Heat Emitter Outputs (available separately).
3. Divide the rated output by room heat loss.
4. Determine the radiator Oversize Factor for each room.
5. Determine the Temperature Star Rating for each room.
6. For every room:• check the room specific heat loss
(W/m2); • use the Guidance Table and colour
coding to check that the emitter and flow temperature is suitable.
HEG – procedure for existing systems
31
For every room, divide the radiator rated output by the room heat loss to determine the Oversize Factor
For every room, use this table to determine the Temperature Star Rating
Oversize Factor for each room heated by radiators
32
The Temperature Star Rating indicates the likely system efficiency based on the worst performing room and flow temperature from the heat pump prior to any blending valves
HEG – Temperature Star Rating
33
Achieving a higher Temperature Star Rating
34
Heat pump operating SPF is limited by the worst performing room
For the worst performing room, use the Temperature Star Rating to confirm the GSHP or ASHP likely space heating SPF
• This is the likely performance of the whole system
The likely space heating SPF is used for RHI PURPOSES
For RHI, the likely SPF must be 2.5 or over. For ASHP, this equates to minimum SPF 2.7 with a maximum flow temperature of 50°C
HEG – likely space heating SPF for RHI purposes
35
Guidance Table
For every room - - check the room specific heat loss
(W/m2)- use the Guidance Table to check that
the emitter and flow temperature is suitable
36
Flow temp at peak design conditions
Nominal SPF assumes weather compensation and excludes DHW provision
< 30 W/m2
30-50 W/m2
50-80 W/m2
80-100 W/m2
100-120 W/m2
120-150 W/m2
Temperature Star Rating indicates efficiency – 6 stars is most efficient
Oversize factor x room heat loss = required emitter output at (MWT – AT) of 50
Typical UFH pipe spacing for screed systems
Typical UFH pipe spacing for aluminium panel systems
37
Guidance Table in detail
Colour coding
HEG calculation example #1
An example of a poorly-insulated room is assumed to be in London (design outside air temperature = -1.8°C) with single glazing. The heating is assumed to be used continuously
Room heat loss: 1671W Size of existing radiator: 1600mm L, 700mm H, 103mm D (double panel) Existing radiator rated output at MW-AT at 50°C = 1938W Calculate the Oversize Factor and look up the Temperature Star Rating on the chart Oversize factor: 1938/1671 = 1.2 Temperature Star Rating: [no stars] Radiator flow temperature: > 60°C
Note that this system would not be eligible for RHI
39
HEG calculation example #2 – Reduce the energy losses
Reducing the fabric and ventilation heat loss is an efficient way of increasing the Temperature Star Rating. It reduces energy consumption and improves the system efficiency. Always consider reducing heat losses when making changes to a house.
In this example, external walls have cavity wall insulation added, windows are replaced with A-rated double glazing, 50mm of underfloor insulation is added, and the room is carefully draught-proofed to reduce the heat loss.
Improved room heat loss: 976W New oversize factor: 1938/976 = 2.0 New Temperature Star Rating: 2 stars Radiator flow temperature: 55°C Likely GSHP heating SPF: 3.1 Likely ASHP heating SPF: 2.4
Note that an ASHP in this system would not be eligible for RHI
40
HEG calculation example #3 – Upsize the radiators
Upgrading the existing radiator to one that has a higher rated output is another way of increasing the Temperature Star Rating:
Size of new radiator: 1600mm L, 700mm H, 135mm D (this is a double convector with the same frontal area as the existing radiator)
New radiator rated output: 3269W New oversize factor: 3269/1671 = 2.0 New Temperature Star Rating: 2 stars Radiator flow temperature: 55°C Likely GSHP heating SPF: 3.1 Likely ASHP heating SPF: 2.4
Note that an ASHP in this system would not be eligible for RHI
41
HEG calculation example #4 – reduce heat losses and upsize radiators
The two previous examples can be combined to produce a more efficient installation
Improved room heat loss: 976W New radiator rated output: 3269W New oversize factor: 3269/976 = 3.4 New Temperature Star Rating: 4 stars Radiator flow temperature: 45°C Likely GSHP heating SPF: 3.7 Likely ASHP heating SPF: 3.0
Note that an ASHP in this system would be eligible for RHI
42
Typical flow temperature ranges
Low temperature ASHP 25°C-55°C
Typical boiler 55°C-80°C
Radiators typical design mean water temperature of 70°C
Flow temperatures and radiators
43
Mean Water Temperature MWT = (flow temperature + return temperature)/ 2• Note : For many heat pump systems, the difference between flow and return
temperature is often 5°C• For a typical heat pump system with a design flow temperature of 45°C, the
return temperature would be 40°C and the Mean Water Temperature would be 42.5°C
The Heat Emitter Guide asks installers to calculate output of radiators at a Mean Water to Air Temperature difference of 50°C
Mean Water to Air Temperature difference = MWT – room air temperature• For a typical heat pump system as above, with design room air temperature
of 21°C• Mean Water to Air Temperature difference = 22.5°C
What is Mean Water Temperature?
44
45
Radiator Correction factors
MWT-AT Factor
5°C 0.050
10°C 0.123
15°C 0.209
20°C 0.304
25°C 0.406
30°C 0.515
35°C 0.628
40°C 0.748
45°C 0.872
50°C 1.000
Typical radiator data is given at 75/65/20 (flow/return/room air temps) Table shows radiator sizing factors at different MWT-AT with AT at 20°C Mean Water Temperature = 70°C The difference between the mean water temperature and the room air
temperature dT = 50°C (i.e. 70°C-20°C=50°C). The correction factor is 1
For a heat pump, the typical water flow temperature is up to about 55°C. Table below shows correction factors for typical conditions with heat
pump. A higher water flow temperature increases the correction factor and
reduces the size of radiator required BUT will reduce heat pump efficiency. The correction factor for the chosen operating conditions is then applied to
the manufacturers data at 75/65/20 to give the output of the radiator at the lower water flow temperature.
Design condition dT (MWT-AT) Correction factor
55/50/20 32.5 0.572
50/45/20 27.5 0.461
45/40/20 22.5 0.355
46
1
2
3
Radiator Correction factors
46
Design condition dT (MWT-AT) Correction factor Output needed (W)
55/50/20 32.5 0.572 1748 [1]
50/45/20 27.5 0.461 2169 [2]
45/40/20 22.5 0.355 2817 [3]
Example – room heat loss is 1000W. Existing radiator provides 1028W at 75/65/20. Room heat loss is divided by correction factor to size radiator at each flow condition.
Example table of Heat Emitter Outputs
47
If it is possible to use the existing radiators then always consider:
• Flushing and cleaning the entire heating distribution system to remove as much sludge deposits as possible e.g. power flushing, chemically cleaning– Be aware that this may now expose small holes in the pipework of
old systems
• Installing an additional dirt separator / filter on the return to the heat pump to reduce the amount of sludge entering the heat exchanger
Radiators – using existing system
48
49
Underfloor heating – design considerations
Factors affecting the heat output from underfloor heating include:• Type of floor construction e.g. solid concrete or timber suspended• Amount of insulation installed underneath the pipework – as much as possible!• Floor covering e.g. tiles conduct heat better than carpet which acts as an insulator
To maximise performance of the heat pump:• Keep flow temperatures as low as possible• Ensure delta T between flow and return is in line with the heat pump requirements
Typically with a heat pump running at 40°C, the maximum output from the UFH in a room with a fitted carpet is 53W/m²
Pump mixing sets on underfloor heating manifolds:• Try and avoid blending valves and mixing sets with low temperature heat pumps • Where installed, the pump will need to be interlocked with the integral circulation
pump to ensure simultaneous operation, or a low loss header/buffer tank must be installed
Recommend that a detailed system design is carried out by the underfloor heating manufacturer
49
Example Heat loss Calculations and the application of intermittent use factors
a) Cavity wall, double glazed and 21oC
b) Solid wall, single glazed and 21oC
c) Solid wall, single glazed and 23oC
MIS 3005 V4.0 - 4.2.1aIntermittent and night set back effects
Heat loss calculation should be completed to using a method that complies with EN 12831. The following should be considered-
• Intermittent and continuous heating
• Using MIS 3005 a living room of a pre 2000 property has a heat loss of 1564W.
• The figure is calculated using continuous heating.
• If a 3oC night set back is applied and a reheat of 4 hours the peak heat demand increases to 1795W - an increase of 13%.
• If the reheat time is now one hour then the peak heat demand is 2365W and total increase of 34%
• On a property of 80m2 this can increase the space heating power from 6.1kW to 9.7kW and the kWh from 15601 to 24884
• Increasing electrical energy used from 5200kWh to 8295kWh (using SPF of 3)
Heat Pump Compliance Certificate 2. Purpose of installationMIS 3005 V4.0 - 4.2.1a
• Total energy required by the house 24884kWh (with 1 hour reheat and 3oC night set back)
• Using MCS021 MIS3005 4.2.10 – 4.2.12
• 35oC temperature 6 star system an AWHP will give a SPF of 3.6• Electrical energy used 6912kWh (using SPF of 3.6)• £898 (13p)
• 45oC temperature 4 star system an AWHP will give a SPF of 3• NB. 2 star systems are not eligible for RHI as SPF is less than RES 2.5• Electrical energy used 8295kWh (using SPF of 3)• £1078 (13p)
• 50oC temperature 3 star system an AWHP will give a SPF of 2.7• NB. 2 star systems are not eligible for RHI as SPF is less than RES 2.5• Electrical energy used 9216kWh (using SPF of 2.7)• £1198 (13p)
• If a mixed radiator and UFH system is used and the radiator requires 50oC and the UFH is mixed down to 45oC, then the temperature leaving the heat pump will be 50oC therefore SPF is 2.7 and the system reduced to 3 stars
• Electrical energy used 9216kWh (using SPF of 2.7)• £1198
Effects of not considering uplift
Appendix E RHI calculation
12,000kWh
3,00kWh
1
1
12,000 x 1 + 3,000 x 1 = 15,000
2.7 9444
DHW Calculator – Adjusting volume to suit lower thantypical storage temperatures
65°C 8°C
FINAL TEMP
35°C
FINAL VOLUME
380ltr
VOL DELIVERED @ OUTLET TEMP
STORED COLD FEED65°C 8°C
180ltr• Stored DHW temperature• Cylinder or requirement
volume• Inlet cold water temperature• Required delivery
temperature
• The final delivery volume will be calculated
At storage temperature of 65 C ⁰and inlet temperature is 8 C⁰• Based on BS EN 3900• DHW required is based on
number of bedrooms + 1 • For a 3-bedroom property• 3 + 1 = 4• From BS EN 3900 and based
on rooms, 45ltrs is required @ 65 C ⁰
• 4 x 45ltr = 180ltrs required• Delivery temperature of, say,
35 C⁰• Total volume available would
be 380ltrs
DHW 65 C Example⁰
65C 8C
35C
8C
180LTR
65C
Delivery Volume380 ltr
DHW 45 C Example ⁰
45C 8C
35C
8C
280LTR
If heat pump can only achieve DHW storage temperature of 45 C and inlet temperature is ⁰8 C. ⁰End user would still require 380lts to meet with the standard.
• DHW required based on number of bedrooms + 1
• For a 3-bedroom property• 3 + 1 = 4• Total volume available needs
to be approximately the same as at 65 C = 380ltrs⁰
• 280ltr of stored DHW water is required at 45 C to delivers ⁰384ltrs @ 35 C⁰
Delivery Volume384 ltr
45C
DHW Comparisons
45°C 8°C
FINAL TEMP
35°C
FINAL VOLUME
384ltr
VOL DELIVERED @ OUTLET TEMP
STORED COLD FEED45°C 8°C
280ltr
65°C 8°C
FINAL TEMP
35°C
FINAL VOLUME
380ltr
VOL DELIVERED @ OUTLET TEMP
STORED COLD FEED65°C 8°C
180ltr
Controls Handover and Label
Ensuring costs are transparent
Customers should be made aware of the estimated annual cost of electricity to operate the heat pump.
This means:
Where the number of collectors or emitter circulation pumps exceeds two or the run hours of the heat pump, the electricity costs associated with the operation of the collector and emitter pumps should be calculated.
Refer to section 4.3.1
Controls Handover and Label
Compliance Certificate Requirements
The Contractor should explain how the controls have been set to ensure the system operates at a temperature no higher than TFSH
(ie the temperature of the water leaving the heat pump to supply space heating)
Record the controls used and the control settings
Attach a label (close to the heat pump) to show the water temperature TFSH and required control settings
This label is featured in MIS3005 v.4 and
can be marked by the installer
MIS 3005 v.4 (section 4.2.9)The Contractor shall ensure that supply is adequate and ensure that the necessary permissions to connect to the electricity grid are obtained by the client.
NOTE: Where relevant heat pump connection forms are available from the MCS website www.microgenerationcertification.org.
MCS 3007 (section 8.3.1)Manufacturers shall make available to Installers and the Certification Body the completed heat pump Distribution Network Operator (DNO) connection forms with all relevant product data.
Notifying the Distribution Network Operator
Notifying the Distribution Network Operator
Why Notify?
The DNO is required to ensure the integrity of local supply and this can be compromised if a ‘disturbing load’ is connected to the network
There are 3 forms (A, B and C) Form A is the highest level of harmonic, flicker performance, tested
to a high level of standard (EN 61000 -3-2 and EN 61000 – 3-3) Form B requires additional scrutiny by the DNO and is a level below
the highest standard Form C means the product has not been tested against harmonic
and flicker standards and may not be approved for connection
Notifying the Distribution Network Operator
• The installer completes the form with the customer, noting other heat generating electrical capacity in the installation (e.g. Immersion)Note that this form attracts the fastest turnaround time for approval
Notifying the Distribution Network Operator
• The manufacturer will be required to provide MCS with the relevant data for harmonics and flicker to complete this more complex formNote that this form attracts a longer turnaround time for approval
Notifying the Distribution Network Operator
Important Points To Remember
• Do not connect a heat pump before approval as there may be a network upgrade charge which may in turn be passed to the customer
• Every DNO is now committed to using these forms and any other forms have been phased out
• The manufacturer will ALWAYS be able to help you with the required data but the installer will need to complete the form due to installation site variables
Notifying the Distribution Network Operator
• The most complex of the 3 forms requiring power fluctuation data.Note that this form attracts the same turnaround time for approval as form B
Metering – 3 types of metering
1 Meter ready
All installations must be meter ready
2Metering for
Payment
Bi-valent and hybrid systems, and
second homes must be metered
3 Monitoring
and Metering Service Package
Optional service provided by a third
party to householder
Internal Use Only
All new systems must be ‘meter-ready’
Some installations will have DECC’s own metering equipment fitted.
‘Meter-ready’ includes: • Leaving sufficient space for heat meters• Installing isolation valves to avoid draining systems• Leaving pipework accessible• Providing information about the installation
Legacy installations do not have to be meter ready
1. Meter ready
Internal Use Only
Required where a heat pump or biomass boiler is installed….
…Alongside another fossil fuel system; or
…In a property that has been defined as a second home Also required for hybrid heat pump systems Number and location of meters will depend on the system
2. Metering for Payment
Objective: Measure the total heat output from the renewable heating system, including whatever components are practical to measure, and measure the energy input to the same components
Heat Meters – Requirements • A flow meter, matched pair of temperature sensors
and a calculator• Within accuracy Class 3 or better
Electricity meters – Requirements• Within accuracy Class A
All meters must:-• Comply with Annex I of 2004 Measuring Instruments
Directive • Be installed by a competent, qualified and
registered person • Not be tampered with to affect meter readings
3. Requirements for meters
Internal Use Only
This is optional A high-frequency (2-minute), high-resolution remote
metering service package Payment of £230 / year for heat pumps Package is assembled, installed and monitored by
installer, manufacturer or a third party (not DECC) to a defined specification
Purpose:- Provide customers with peace of mind their system is
working well; or evidence that it isn’t Enable installers to review their work To provide DECC with data as well
4. Monitoring and Metering Service Package
Presentation complete!
Thank you for taking the time to go through this presentation.
We hope that you have found it useful and it aides you in the successful training of installers or installation of Heat pumps under the Domestic Renewable Heat Incentive scheme