Therm-X MVHRU HR95
Technical Manual
Page 4 of 59
Version 2.4, 25/09/2020
2.
PRODUCT OVERVIEW
2.1.
CONSTRUCTION
The
Therm-X HR95
unit
casing is assembled from a
self-supporting frameless
construction,
manufactured with
double
skinned
,
corrosion
resistant,
50mm deep hot
dip galvanized sandwich
panels
(thick.: 0.8mm).
The outstanding mechanical strength, thermal and
acoustic performance of the casing is assured by
packing the panels with
high density rockwool (
(88
kg.m
-3
)
with excellent thermal and acoustic
performance (0.041 W.(m.K)
-1
, fire resistance class
A1 to 13501-1 + A1: 2009 - non-combustible).
The panels are joined with internally enclosed self-
drilling fixings resulting in a smooth internal surface,
crevice free, which contributes to the cleanliness of
the unit and the quality of the air supplied through it.
The panels are finished with a
RAL7040
powder
coated paint finish
for optimum corrosion
protection.
To avoid external air leakage both fixed and access
panels are sealed with an high tightness,
EPDM
closed cell gasket
.
2.2.
INSTALLATION
The unit is suitable for
free standing internal or
external ducted installation
as standard (un-
ducted connections must be louvered on site by
others).
The units can be configured as
vertical (double-
deck)
or
horizontal (side-by-side)
with the
exception of sizes 450 and 550 which are available
in vertical configuration only.
All sizes are supplied with
rectangular connections
and factory fitted nut inserts to allow easy installation
of the ductwork or dampers.
All units are supplied as a
single piece
and mounted
on a steel base frame for transport and handling.
2.3.
ACCESS AND MAINTENANCE
Access to all the units compartments is available
through the
tool operated access panels
as
standard.
Top access panels on the units
are supported by an hydraulic
support strut.
Removable access panels are
equipped with handles to facilitate
handling during maintenance
operations.
The control panel is installed in an
easily accessible enclosure inside
the unit (top on vertical units, side
on the horizontal units).
2.4.
FANS
The unit fan section comprises of high performance
supply and extract,
single inlet-backward curved
plug fan.
The fans are directly driven by low
energy
consumption
IE4
electronically commutated (EC)
motors.
The fan exceeds the 2015 efficiency
requirements of regulation 327/211
of the Eco-design directive for fans.
The assembly is statically and dynamically balanced
as per DIN/ ISO 1940 to balancing grade G 6.3.
The highly efficient
aluminium impellers
and
aerodynamic design of the casing ensures low noise
levels especially on the outlet from the fan.
The fan assembly is installed on a
highly rigid
galvanized support structure
mounted with an
aerodynamically designed galvanized inlet.
The EC motors offer intelligent integral control
electronics allowing
soft start-up
as well as
over-
temperature and short circuit protection
.
The motor insulation is Class ‘B’, rated IP 54 (acc. to
EN 60529) and meets all relevant EMC directives
and requirements.