The products covered by the certification reference standard are hybrid appliances combining a boiler and a heat pump (HP). The maximum certified nominal thermal output of the HP is fixed at 100 kW and the maximum certified effective power output of the liquid/gas fuel-fired generator is fixed at 70 kW.
These appliances are used to power hot water heating systems and produce domestic hot water (DHW). These appliances comprise:
- a type-C or type-B liquid/gas fuel-fired generator featuring the CE marking
- a HP with an electrically driven compressor:
- “outdoor air/water” type, non-reversible
- “extracted air/water” type, non-reversible
- a regulator for optimizing the operation of the generator and heat pump
- a storage tank for the domestic hot water function
- one or more exchangers
- a hydraulic circuit switching component
- accessories such as:
- a DHW circuit circulation pump
- the lengths of pipes connecting the various components
- end connections
In the case of hybrid appliances with separate components, the assembly of such components is deemed to be an inseparable system for determining the certified characteristics/performance.
- The energy performance:
- coefficient of performance (COP)
- heating capacity (Ph)
- electric input power (Peh)
- Sound power level (Lw)
- Share of electrical power for the auxiliaries (Taux)
- For variable power regulation HPs :
- minimum load rate in continuous operation (LRcontmin),
- COP at LRcontmin,
- performance correction coefficient at LRcontmin (CcpLRcontmin).
- For DHW:
- The heating-up time (th)
- The spare capacity (Pes)
- The reference hot water temperature (q’WH)
- The maximum volume of usable hot water (VMAX) or the Volume of mitigated water at 40 °C (V40)
- The DHW primary energy efficiency (by storage) (PEEDHW-PE)
A range of hybrid appliances is a set exclusively comprising:
- liquid/gas fuel-fired generators of the same type (C or B), covered by the same CE declaration of conformity issued by the manufacturer
- HP such as defined in the NF 414 standard
- a tank such as defined in the NF 414 standard
- a hydraulic circuit for the DHW function of the same principle and using exchangers of the same technology
- the same hydraulic or refrigerating circuit switching component technology
- the same control process.