شهادات اعتماد عن طريق الطرف الثالث

Scope of the programme

This Certification Programme applies to mechanical supply and exhaust ventilation units used in single dwelling as defined in EN13141-7:2010:

• Only units with heat recovery systems
• Units with any type of heat recovery systems (including extract air / outdoor air heat pumps)
• the maximum flow rate as defined in RS 15/C/001 do not exceed 1000 m³/h or is between 250 and 1000 m³/h and the manufacturer does not declare its intended use exclusively for a non-residential ventilation application.

Definitions

Heat recovery types:
The following heat recovery types are considered:

• Category I: Recuperative heat exchangers (e.g. air-to-air plate or tube heat exchanger) cross flow or counter flow
• Category II: Regenerative heat exchangers (e.g. rotary or reciprocating heat exchanger)
• Extract Air-to-Outdoor Air heat pump for extract air heat recovery

Declared maximum air volume flowrate qv,max:
Air volume flow corresponding to the declared total pressure difference PtUd of the unit at the maximum setting for standard air conditions (20 °C, 101325 Pa)

Declared minimum air volume flowrate qv,min:
Air volume flow corresponding to ptUd/2 at the minimum setting for standard air conditions (20 °C, 101325 Pa)

Intermediate (reference) airflow rate qv,int:
Airflow rate (in m3/s) within the operating range of airflows declared by the participant including the reference point.

Reference point:
The reference point is defined at ptUd/2 and 70 % of declared maximum air volume flow. If this point cannot be set, pressure shall remain at ptUd/2 and airflow shall be adjusted just over.

Maximum flow reference pressure ptUd:
Total unit pressure difference at which the maximum airflow rate is determined. It shall be 100 Pa. However, if it cannot be achieved, a total unit pressure difference at maximum flow rate shall be declared by the manufacturer.

Minimum and maximum setting:
Minimum and maximum Fan speed settings declared by the participant; for variable speed fan motor unit, participants have to declare the corresponding setting (percentage, voltage, etc.)

Intermediate setting:
Intermediate Fan speed setting which include the reference point

Maximum air flow point:
Maximum air flow point shall be adjusted at ptUd and declared maximum air volume flow. If this point cannot be set, pressure shall be adjusted just over ptUd.

Airflow/pressure certified window:
All airflow/pressure points achievable on exhaust and supply side between 60% and 100% of the declared maximum air volume flowrate qv,max and with a total unit pressure difference equal or higher than ptUd/2.

Technical documentation
Selection software and/or tables of data:

• available through a web address
• allowing retrieving all the points within the airflow/pressure certified window for both the exhaust and the supply side

Technical documentation often includes diagrams of the airflow/pressure performances of the unit and performances published on Eurovent Certified Performance website.

Effective power input
Electric power input in watts at the reference point. It includes the electrical demands:

• for fans,
• controls (including remote controls)
• safety devices
• any power input for defrosting, excluding additional electrical heating devices not used for defrosting;
• power input of the motor of the wheel for rotary heat echangers (the same speed as the one used for the thermal test shall be used)
• power input of the heat pump in heating mode at 20(12)°C indoor air and 7(6)°C outdoor air

Operation limit temperature TOL
Lowest outdoor temperature at which the unit can still function as declared by the manufacturer

Certified characteristics

* Airflow/pressure curves for supply and exhaust side for air volume flowrates between 60% and 100% of the declared maximum air volume flowrate qv,max and for total unit pressure difference equal or higher than 50 Pa (or ptUd/2 if ptUd is different from 100 Pa)

* Leakage class

* Airflow/Pressure/Power Input
 Maximum air volume flowrate (qv,max) 
  Air volume flow rate at reference point on supply side
  Effective power input at reference point (calculated from SPI and qv ref)
  Specific electric Power Input at reference point
  Imbalance ratio at nominal condition  (<3% or real value according EN13141-7 §6.3.2) 
  Maximum flow reference pressure (ptUd)
  Total pressure difference at reference point on supply side (ptUD/2)

* Efficiency
  Temperature ratio at reference point on supply air side at point 1 
  COP at 20(12)°C indoor air and 7(6)°C outdoor air for reference point
  COP at 20(12)°C indoor air and 2(1)°C outdoor air for reference point
  COP at 20(12)°C indoor air and -7(-8)°C outdoor air for reference point 
  EER at 20(12)°C indoor air and 35(24) outdoor air for reference point
  EER at 27(19)°C indoor air and 27(19)°C outdoor air for reference point

* Acoustic performances
  A-weighted sound power level at reference point radiated through the casing
  A-weighted sound power level at reference point in duct connections supply 
  A-weighted sound power level at reference point in duct connections extract 
  A-weighted sound power level at reference point in duct connections exhaust
  A-weighted sound power level at reference point in duct connections outdoor

* Cold climate
  The unit runs at cold climate.

* EU Regulation
  SEC 
  SEC Class
  AEC
  AHS Average Climate : Annual Heating Savings for the average climate per 100 m² floor area
  AHS Cold Climate : Annual Heating Savings for the cold climate per 100 m² floor area
  AHS Warm Climate : Annual Heating Savings for the warm climate per 100 m² floor area