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POL 01 - Impact of Refrigerants

Information correct as of 18thSeptember 2021. Please see kb.breeam.com for the latest compliance information.

Applicability of prerequisite - KBCN1072

The prerequisite must be met in order to award any credits where refrigerants are used. It is also applicable when the 'leak detection' credit is awarded on the basis of the refrigerant charge being less than 6kg.

District cooling systems - KBCN0759

Where a district cooling facility is servicing the assessed building, the building will have an environmental impact in terms of refrigerants, albeit in this case indirectly. As such the district cooling system must be considered against the BREEAM criteria for refrigerants. Where connection to an off-site district cooling system, over which the developer has no control, is mandated by a local authority or other statutory body, the maximum number of credits can be awarded for Issue Pol 01. However, where this is not mandatory and the developer has the option whether to connect, regardless of encouragement or incentives by the local authority, the district cooling system must be considered against the BREEAM criteria for refrigerants to award the credits.
27/04/2017: Clarified the number of credits awarded

Freestanding commercial fridges and freezers - KBCN0577

Freestanding commercial fridges and freezers must be included in the assessment of the Pol 01 issue, even when they are not connected to the building cooling system. Only domestic white goods are excluded from the assessment of this issue.

Impact of refrigerant – Refrigerants with low GWP - KBCN1472

Where the only refrigerant used has a GWP of ≤10, the Pol 01 calculator does not have to be completed. In such cases, evidence of the systems and the refrigerant used will be sufficient to demonstrate compliance and to award maximum credits for Impact of refrigerant.

Leak detection system based on pressure changes - KBCN0326

A system that uses pressure changes to detect leaks is not necessarily compliant. To be deemed compliant the leak detection system would need to monitor the refrigerant pressure and the operating conditions to address the problem of natural fluctuation.

Manufacturer’s information – system specific data - KBCN0926

The BREEAM technical manual provides a set of default figures, for use within the DELC calculation. Where available, system-specific data, provided by the manufacturer, can be used in the calculation where this is more representative. Any such system-specific figures used must be supported by publicly available, published data, which substantiates the manufacturer’s figures.

No refrigerant use – shell & core assessments - KBCN1058

The credits for Pol 01 can be awarded where it can be demonstrated that the building requires no refrigerants as per the criteria. For shell & core assessments, where there is no requirement for refrigerants within the core services but it cannot be guaranteed that the future tenant may not install refrigeration systems for process equipment, in order to award the credits, it must be demonstrated that the building has been designed to operate without the need for refrigerants for air-conditioning or comfort cooling. One way of demonstrating this would be that the BREEAM credit for 'Free cooling' has been achieved.

Not enough rows in the Pol 01 calculator - KBCN1274

If additional rows are required in the calculator it is acceptable to add the specification of multiple models together in one tool, provided they are the same model and have all the same inputs for columns F to M. The weighting of the systems across the building is done by the System Capacity and Total Refrigerant Charge (columns E and F), so you would multiply each of these two figures by the total number of the system specified. This gives the contribution of the systems to the building's cooling capacity and charge. If further rows are still required please email BREEAM@bregroup.com with a copy of the tool and specify the number of rows required.

Reversible heat pump (VRF) providing both heating and cooling - KBCN0735

Where a reversible heat pump, which provides heating and cooling on reverse cycle with heat recovery, is used, the cooling capacity only should be used for the Direct Effect Life Cycle CO2e emissions (DELC) calculation. The cooling capacity of heat humps is normally less than the heating capacity, so compliance against the criteria will be based on the more challenging DELC value calculated.

Scope of the refrigerant leak detection system - KBCN0530

The refrigerant leak detection system is required to cover any part of the plant or pipework which contains refrigerant.
21/08/17 KBCN amended to include pipework containing refrigerant.

Information correct as of 18thSeptember 2021. Please see kb.breeam.com for the latest compliance information.