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Therm-X MVHRU HR95
Technical Manual
Page 7 of 59
Version 2.4, 25/09/2020
2.8.
TESTING
All unit models undergo a stringent set of tests to the
relevant European standards in an accredited
laboratory to ensure accurate catalogue data.
Performance is tested to ISO 5801:2007
Industrial
fans
–
performance testing using standardized
airways.
Casing radiated noise acoustically tested to BS
EN 3744:2010
–
Acoustics - Determination of sound
power levels and sound energy levels of noise
sources using sound pressure - Engineering
methods for an essentially free field over a reflecting
plane.
Published figures are for a
non-punctiform source
and
spherical propagation
as described in
ISO
3744.
In duct noise acoustically tested to BS EN ISO
5136:2010
- Acoustics
–
Determination of sound
power radiated into a duct by fans and other air-
moving devices - In-duct method.
Heat recovery efficiency tested to EN 308:1997
-
Heat exchangers - Test procedures for establishing
performance of air to air and flue gases heat
recovery devices.
Model box casing performance tested to
EN1886:2007
- Ventilation for buildings - Air
handling units:
Thermal transmittance of the casing - T3 (MB)
Thermal bridging of the casing - TB4 (MB)
Casing air leakage - L1 (MB)
Casing strength
–
D2 (MB)
Testing
tolerances
in
accordance
with
COMMISSION REGULATION (EU) No 1253/2014
are as follows:
SFPint
–
Declared value x 1.07
Thermal Efficiency
–
Declared value x 0.93
Sound power level
–
Declared value + 5dB
2.9.
BUILDING REGULATIONS AND ECO-
DESIGN DIRECTIVE
All models are performance tested and
measurements are made to obtain the power
consumption of the units at several operating points.
These tests were conducted to evaluate the
performance of the unit at standard configuration
(G4+F7/G4) and as per the ErP directive (F7/M5
filters).
The units are able to operate within the limits of both
of these regulations under most conditions. To
provide accurate performance data a detailed
software selection can be produced.