Therm-X MVHRU HR95
Technical Manual
Page 55 of 59
Version 2.4, 25/09/2020
7.3.1.
Water changeover coils shall be manufactured of aluminium fins with hydrophilic treatment, copper tubes
and assembled on a corrosion resistant galvanized casing.
7.3.2.
The maximum operating pressure of the water changeover coils shall be 16bar and the maximum operating
temperature 130°C.
7.3.3.
Direct expansion coils of aluminium fins with hydrophilic treatment, copper tubes and assembled on a
corrosion resistant galvanized casing.
7.3.4.
The test pressure of the direct expansion coils shall be 46bar.
7.4.
The heating and cooling output shall be automatically modulated by use of the in-built temperature sensors
and the integral unit controls. The changeover between heating and cooling mode shall be automatically managed
by the unit controls.
8.
Testing and compliance
8.1.
Performance shall be tested to ISO 5801:2007 Industrial fans -- Performance testing using standardized
airways.
8.2.
Casing radiated noise acoustically tested to
BS EN 3744 - 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 shall be for a non-punctiform source and spherical propagation as described in ISO 3744.
8.3.
In duct noise shall be acoustically tested to
BS EN ISO 5136 - Acoustics - Determination of sound power
radiated into a duct by fans and other air-moving devices - In-duct method
.
8.4.
Heat recovery efficiency shall be tested to
EN 308 - Heat exchangers - Test procedures for establishing
performance of air to air and flue gases heat recovery devices
.
8.5.
The performance of the unit casing shall be tested to
EN1886:2007 - Ventilation for buildings Air handling
units
–
Mechanical performance
.
8.5.1.
The thermal transmittance class of the casing shall correspond to T3 (MB).
8.5.2.
The thermal bridging class of the casing shall correspond to TB4 (MB).
8.5.3.
The casing air leakage class of the casing shall correspond to L1 (MB).
8.5.4.
The casing strength class of the casing shall correspond to D2 (MB).
8.6.
The units shall be compliant with Part L of the Building Regulations 2010 and the requirements of the Eco-
design directive for 2018.
8.7.
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