The ERP DIRECTIVE FOR CHILLERS

Tier 1 of the ErP Directive 2016/2281 (Lot 21) entered into force on 1 January 2018. This Directive relates to product groups including ‘chillers for comfort air conditioning’ and ‘chillers for process cooling with high operating temperatures’.

The ErP Directive 2016/2281 states the minimum energy efficiency requirements that apply to the unit according to its use.

As a manufacturer, we have been legally obligated since 1 January 2018 to only sell units that meet the requirements of the ErP Directive – even if the design and conception of the unit took place prior to this date. We pay strict attention to ensuring that all the units we offer meet the efficiency criteria of the Ecodesign Directive in full.

We have made available all the technical data sheets on our air conditioning and heat pump systems.

To the data sheets

RELEVANT UNITS

In defining the reference limit values, the new Ecodesign Directive distinguishes between the respective applications for which a unit is used. In this way, a chiller from Mitsubishi Electric can be used in three different categories:

As a comfort chiller for room air conditioning
As a process chiller with a high operating temperature
As a process chiller with a medium operating temperature

It is therefore important for manufacturers to be included in project planning by means of building-specific and design-specific information. This is the only way to ensure that the suitable ErP compliant design can be provided for each individual use case – especially in the context of mixed applications covering both room air conditioning and process cooling.

Distinguishing features:

	Process chiller
Comfort air conditioning	with high operating temperature	with medium operating temperature
Cold water outlet temperature min. +2°C	Cold water outlet temperature between +2°C and 12°C (nominal conditions at +7°C)	Cold water outlet temperature at -8°C (nominal condition)
Fitted with a chiller (electric motor or combustion engine)	Compressor with electric motor and at least one evaporator	Compressor with electric motor and at least one evaporator
Liquefier for air, water or geothermal heat sink(s)	May comprise liquefier and other additional equipment	May comprise liquefier and other additional equipment
For achieving and maintaining a pleasant room temperature for people	Purpose is not to cool a room to a pleasant temperature for people	Purpose is not to cool a room to a pleasant temperature for people
ErP stipulation of ηsc (SEER)	ErP stipulation of SEPR	ErP stipulation of SEPR

KEY EFFICIENCY VALUES

Following the entry into force of Directive 2016/2281 for comfort chillers, it is obligatory to state the Seasonal Space Cooling Energy Efficiency (ηs,c) and the Seasonal Energy Efficiency Ratio (SEER value) in cooling mode.

In the case of air- and water-cooled process chillers with high and medium operating temperatures, the Seasonal Energy Performance Ratio (SEPR) must be stated. The different calculation formulas lead to considerable variation between the partial load ratios for process chillers and comfort chillers. Process cooling features a high cooling requirement all year round, even in the case of low outdoor temperatures.

Comfort chiller: Tier 1 as of 1 January 2021

Comfort chiller	Tier 1		Tier 2
Air/water	From 01/01/18		From 01/01/21
	ηsc	SEER	ηsc	SEER
Pd < 400 kW	149	3.80	161	4.10
Pd ≥ 400 kW	161	4.10	179	4.55

Comfort chiller	Tier 1		Tier 2
Water/water	From 01/01/18		From 01/01/21
	ηsc	SEER	ηsc	SEER
Pd < 400 kW	196	5.10	200	5.20
400 kW ≤ Pd < 1500 kW	227	5.88	252	6.50
Pd ≥ 1500 kW	245	6.33	272	7.00

Minimum efficiency values for process chillers with high operating temperature

Process chiller	Tier 1	Tier 2
Air/water	From 01/01/18	From 01/01/21
	SEPR	SEPR
PA < 400 kW	4.5	5.0
PA ≥ 400 kW	5.0	5.5

Process chiller	Tier 1	Tier 2
Water/water	From 01/01/18	From 01/01/21
	SEPR	SEPR
PA < 400 kW	6.5	7.0
400 kW ≤ PA < 1500 kW	7.5	8.0
PA ≥ 1500 kW	8.0	8.5

Minimum efficiency values for process chillers with medium operating temperature

Process chiller	Tier 1	Tier 2
Air/water	Since 01/06/16	From 01/07/18
	SEPR	SEPR
PA ≤ 300 kW	2.24	2.58
PA > 300 kW	2.8	3.22

Process chiller	Tier 1	Tier 2
Water/water	Since 01/06/16	From 01/07/18
	SEPR	SEPR
PA ≤ 300 kW	2.86	3.29
PA > 300 kW	3.8	4.37