AIREDALE Barkell Therm X HRFL II User manual

MECHANICAL VENTILATION AND HEAT
RECOVERY UNITS
HRFL II CEILING VOID UNITS
TECHNICAL MANUAL
Version 2.3, 24/06/2020

CONTENTS
INTRODUCTION 3
PRODUCT OVERVIEW 4
OPERATIONAL DIAGRAM 12
AIRFLOW PERFORMANCE 13
HEAT RECOVERY PERFORMANCE 15
ACOUSTIC PERFORMANCE 16
TECHNICAL DATA 18
OPTIONAL COIL PERFORMANCE 20
DIMENSIONS 22
WEIGHTS 24
PACKAGED DIMENSIONS AND WEIGHTS 24
GENERIC WIRING DIAGRAM 25
CODING KEY 27
ACCESSORIES 28
SPECIFICATION 39

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Technical Manual
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1. INTRODUCTION
Especially designed for false ceiling installation the
Therm-X HRFL II range of units offers a compact
and packaged solution of mechanical supply and
extract ventilation with heat recovery.
To suit the increasingly stringent requirements for
local ventilation systems installed in ceiling voids the
units have been designed with reduced height
(down to 310mm) and facilitated maintenance
access.
Also equipped with state-of-the-art plug and play
integral controls the Therm-X units offer the all-in-
one heat recovery solution for local mechanical
ventilation.
These features make these units ideal for installation
in commercial interior applications, such as shops,
offices, coffee bars, restaurants, gyms, sport
facilities and schools.
The units are fully compliant with the requirements
for the UK Building Regulations and the European
Eco-design directive.
The units are intended to be operated in a dry indoor
environment (+5 to 40°C) handling air that is free of
heavy dust, grease, chemical emissions or other
abrasive pollutants with temperature ranging from -
15°C (-20°C with electric pre heater) up to +40°C
and a maximum relative humidity up to 90%.
4 models covering airflows from 0.03 m3.s-1
(108 m3.h-1) to 0.47 m3.s-1 (1692 m3.h-1) at an
ESP of 200Pa
Compact in size with low installation height
(down to 310mm) for efficient space usage
Fully removable bottom access panels for
quick and easy maintenance
Fully compliant with the requirements for Part L
of the UK Building Regulations and the Eco-
design directive
Quiet operation
Low leakage and solid galvanized frameless
construction
Painted bottom panel for exposed installation
Aluminium counter flow plate heat exchanger
with bypass facility and heat recovery
efficiency up to 93%, exceeding ErP 2018
Energy-efficient EC fans with integral
electronic control and silent operation
Low energy consumption F7 (ePM2.5 65%)
supply filter as standard for enhanced IAQ (F9
(ePM2.5 80%) optional)
Intelligent integral control system with touch
screen controller (CAV, VAV, DCV, time
scheduling, boost & trickle, free-cooling, supply
and room temperature control, anti-frost, cooling
and heating coil control, etc…)
Modbus & BacNet communication
Optional integral electric pre-heating coil
Optional integral electric or LPHW post
heating coil
Optional external cooling module (supplied
loose) with water changeover (WCO) or direct
expansion (DX) coil
Extensive range of complimentary accessories
for installation and control
Detailed and accurate software selections with
the THERM-X CHOOSE&GO software
Service software for easy commissioning

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2. PRODUCT OVERVIEW
2.1. CONSTRUCTION
The Therm-X HRFL II unit casing is assembled from
a self-supporting frameless construction,
manufactured with double skinned, corrosion
resistant, 30mm 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 bottom panels are finished with an RAL 9010
powder coated paint to allow exposed installation.
To avoid external air leakage both fixed and access
panels are sealed with a high tightness, EPDM
closed cell gasket.
2.2. INSTALLATION
The unit is suitable for indoor installation by
suspension on the ceiling void and is supplied as
standard with factory fitted support brackets
equipped with anti-vibration mounts to ensure a
quick and reliable installation.
2.3. ACCESS AND MAINTENANCE
Access to all the unit compartments is available
through the bottom tool operated access panels.
All access panels are equipped with hinges and
handles to facilitate handling during maintenance
operations. The panel is fitted with a lock to prevent
the panel from opening at once when unbolted.
All the panels are fully removable allowing access to
the plate heat exchanger, drain tray, fan, filter and
ancillary coil sections as well as facilitating access
for periodic inspection.
The control panel is installed in an easily accessible
enclosure located on the outside of the unit.
2.4. COMPONENTS
2.4.1. FANS
The unit fan section comprises of high-performance
supply and extract, single inlet-backward curved
plug fans.
The fans are directly driven by low energy
consumption IE4 electronically commutated (EC)
motors.
The fans exceed 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 discharge from the fan.

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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.
2.5. FILTERS
Filtration for protection of the finned
heat exchanger and treatment of
the supply air is provided by compact synthetic
media filters mounted in a plastic frame
(Fiberplast).
Grade of filtration according to BS EN779:2012 /
ISO16890 is class F7 / ePM2.5 65%on supply and
M5 / ePM10 70% on extract.
The low pressure drop synthetic media makes for a
low energy consumption filter that helps reduce
the overall energy consumption of the unit.
For stricter indoor air quality requirements, a F9 /
ePM2.5 80% supply air filter is optionally available
(supplied loose for installation by others on site).
The filters are mounted on slides for easy removal
and tightly sealed against the slide rails to ensure
reduced filter bypass leakage.
2.6. COUNTER FLOW PLATE HEAT
EXCHANGER
The heat recovery section is equipped with a highly
efficient counter-flow air to air heat exchanger,
exceeding the 2018 requirements of regulation
1253/2014 of the Eco-design directive for ventilation
units, with operational efficiency up to 93%.
The heat exchanger finned block
and casing are manufactured
from high thermal
transmittance and corrosion
resistant aluminium.
The exchanger is Eurovent certified and fully
tested to EN308:1997.
The heat recovery section is also provided with fully
modulating face and by-pass damper to provide
control of the supply air temperature and enable free
cooling operation when the conditions are
favourable (i.e. summer night ventilation).
In extreme conditions when the exhaust temperature
drops below the frost risk limit the unit controls
strategy provides frost protection for the heat
exchanger by bypassing some of the cold air.
Where it’s not desirable to impact the unit operation
during the frost protection strategy, an electric pre-
heating coil (frost coil) can be offered to provide
improved frost protection.
A fully removable, epoxy coated, galvanized
condensate tray fitted with a 18mm OD drain
connection is provided for condensate collection and
disposal. The condensate tray is equipped with a
water level sensor to avoid overflow of the tray by
stopping operation.
A pumped drainage system can be offered as an
option and where the depth of the ceiling void allows,
an alternative gravity assisted condensate trap
system can also be offered.
2.7. OPTIONAL FEATURES
2.7.1. INTEGRAL ELECTRICAL PRE/POST-
HEATING COIL
The unit can optionally be fitted with an electrical
pre-heater and/or post-heater manufactured with
open coil heating elements and galvanized casing.
The heater is complete with fully modulating SCR
(Silicon Controlled Rectifier) control (0-100%)
and 2 stages of overheat protection (automatic
and manual reset) all integral to the unit’s control
strategy.
The SCR control provides accurate, supply air
temperature modulation.
The heat output is precisely controlled from 0 to 100%
to a user defined setpoint by using the unit in-built
temperature sensors or a room temperature

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sensor (supplied with every unit for installation and
wiring by others on site).
The electric pre-heating coil is recommended where
sub-zero temperatures are expected.
The electrical post-heating coil is recommended
where no hot water supply is available on site and
there is need for top-up heating of the supply air.
2.7.2. INTEGRAL LPHW POST-HEATING COIL
The unit can optionally be supplied with an
integral water heater operating with LPHW to
provide supply air top up heating.
The coils are manufactured with aluminium fins,
copper tubes and assembled
on a corrosion resistant
galvanized casing.
The maximum operating
pressure is 16bar at 110°C.
The heating output is
automatically modulated by the in-built temperature
sensors and the integral unit controls.
Valves and actuators are not included and must be
ordered separately
2.7.3. EXTERNAL COOLING MODULE (DX OR
WCO)
Where cooling is required an optional water
changeover (WCO) coil can be provided operating
with either chilled and/or hot water (depending on the
seasonal requirements) on a common water circuit.
Alternatively a direct expansion (DX) coil operating
with R410A refrigerant can be offered.
All refrigerant coils are tested to 46bar.
Both DX and WCO coils are manufactured with
aluminium fins with hydrophilic coating, copper
tubes and assembled on a corrosion resistant
galvanized casing.
The cooling coil section is also equipped with a
plastic droplet eliminator to avoid moisture
carryover.
A fully removable, epoxy coated, galvanized
condensate tray fitted with a 22mm OD drain
connection is provided for condensate collection and
disposal.
The condensate tray is equipped with a water level
sensor to avoid overflow of the tray by stopping
operation.
These coils are provided on an externally mounted
module with equivalent construction to the heat
recovery unit (supplied loose for installation and
wiring by others on site).
After installed the module requires wiring of the
integral temperature sensors to the unit control panel
(by others on site).
The external module cooling/heating output is
modulated by the unit controller.
2.7.4. ACCESSORIES
All Therm-X units have available a wide range of
mechanical and control accessories to facilitate
installation and enhance the product functionality.
The accessories available for the HRFL II range:
Motorized shut off dampers
Backdraft dampers
Square to round duct transitions
Spare filters
Duct mounted electrical heaters
Duct mounted LPHW heaters
Duct mounted circular attenuators
Matched straight and bend rectangular
attenuators
Condensate pump kit
Condensate trap
Duct and room mounted IAQ sensors (CO2,
humidity)
PIR motion sensor
Valve kits
Matched refrigeration systems

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2.8. TESTING
All models undergo a stringent set of tests to the
relevant European standards at 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.
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 levels –Declared value + 5 dB
2.9. BUILDING REGULATIONS AND ECO-
DESIGN DIRECTIVE
All models are performance tested and
measurements are performed to obtain the power
consumption of the units at several operating points.
These test are conducted to evaluate the
performance of the equipment at its standard
configuration (F7/M5 filters) as per the ErP directive.
The units ae 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.

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2.10. CONTROLS
All Therm-X MVHR units are factory fitted with a
Plug&Play fully integral intelligent control
package.
The factory fitted controls include:
Sealed controls enclosure with unit PCB and all
electrics
Mains switch isolator
Face and bypass damper actuator
4 temperature sensors (fresh air, supply air (x2),
return air)
1 sensor for antifreeze protection (exhaust air)
2 digital pressure sensors for filters
3 digital pressure sensors for airflow
measurement and constant pressure operation
2 water temperature sensors (only versions with
water or direct expansion coils)
1 condensate level sensor (x2 for versions with
cooling coil option)
Automatic and manual thermal reset for electric
heaters (only versions with electric heaters)
All units are also provided with the following loose
items (installation and wiring by others):
1 room temperature sensor
1 handheld touchscreen controller (wiring on
site by others, cable not supplied, CAT5 UTP
cable recommended as minimum)
The in-built controls are pre-configured and offer
several alternatives to operate your Therm-X unit.
The controls are ready to go from the moment
the unit is turned ON, and can be easily configured
with the help of the handheld controller provided
(excludes externally mounted sensors which are
supplied loose and require installation and wiring by
others on site).
Some of the features offered by the controller are
listed below:
2.10.1. AIRFLOW CONTROL
The controls offer continuous modulation of the
airflow range of the unit in 10% steps.
The ratio of airflows for supply and exhaust can be
adjusted according to the requirements of the project
(+-50%).
The unit can be set to operate in distinct ventilation
modes to control the supply of outside air for
ventilation purposes.
CAV (Constant Air Volume) mode
The unit is programmed to supply a constant amount
of air to the ventilated space.
The unit will adjust the output of the fans according
to the internal or external pressure changes in order
to maintain the amount of air being supplied to the
rooms constant.
VAV (Variable Air Volume) mode
The unit is programmed to adjust the fans output to
maintain a constant pressure in the supply duct while
varying the air volume according to the demand of
the ventilated space.
The unit adjusts the supply flow rate according to the
overall opening of the supply VAV terminal units in
the ductwork system.

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DCV (Demand Controlled Ventilation) mode
The unit is programmed to adjust the supply airflow
according to the occupancy on the ventilated space
by matching the outdoor air supply to the ventilation
demand.
The fan output is determined by a 0-10V input from
an air quality sensor (CO2, RH, VOC, etc.., can be
ordered from Barkell, installation and wiring by
others on site).
The flow rate is controlled according to the 0-10V
signal.
“Breathing”
The unit can be set to turn OFF when the IAQ
requirements on the ventilated space are satisfied in
order to save energy.
The unit then turns ON regularly to “breathe” and
check the concentration of pollutants, returning to
normal operation if required.
Trickle mode
If a PIR motion sensor is installed in the ventilated
space (can be ordered from Barkell, installation and
wiring by others on site), in the event of no
occupancy the unit provides only minimum
background ventilation to save energy.
Boost mode
When there is a high demand for ventilation or swift
heating or cooling of the space is necessary (i.e. unit
start up) the boost mode overrides the operation of
the unit and runs the fans at the maximum defined
airflow for the time period determined by the user.
The boost mode can be enabled with the supplied
handheld controller or an external switch (by others
on site).
Time scheduling
The unit can be set to operate on timed operation on
a weekly and/or yearly schedule with individual
settings for up to six time blocks per day/year.
2.10.2. TEMPERATURE CONTROL
The unit is able to control the conditioned space
temperature based on the temperature of the supply
or return air.
Temperature control based on room temperature is
also possible given the room temperature sensor is
installed (room sensor supplied with every unit,
installation and wiring by others on site).
The unit automatically and continuously controls the
output of the heat recovery device and the optional
integral and external heat exchangers (if installed) in
order to achieve the set-point temperature defined by
the user.
The supply air temperature is kept in between the
limits defined during commissioning to avoid very
cold or hot air being supplied to the room.
Automatic free cooling
The unit automatically detects favourable conditions
for free-cooling and ventilates using the cold outside
air to achieve space cooling savings.
2.10.3. OTHER CONTROL FEATURES
In addition to the basic ventilation and temperature
control the Therm-X controller offers a range of
features to extend the functionality, facilitate
commissioning operation and maintenance of the
equipment.
Safety
FIRE MODE interlock with BMS
Soft start up
Frost protection of the heat exchangers
Overheat protection of the electric heaters
Condensate tray overflow protection
Fault and emergency alarms on the handheld
controller
Memory of last operational state in event of
power outage

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Commissioning
Automatic calibration of filters and fans during
commissioning
Component test mode
PID tuning
Maintenance
Continuous monitoring of the filter status
Dirty filter alarm
External control
External enable/disable, error and run
signalisation relay contacts
Control of external heat pump via ON/OFF or
proportional 0-10V enable, error and defrost
signal
Control of up to two external shut-off dampers
(can be ordered from Barkell, installation and
wiring by others on site)
Control of 2nd external pre-heating coil –water
or electric (can be ordered from Barkell,
installation and wiring by others on site)
Control of 2nd external post-heating coil –
water, electric or direct expansion (can be
ordered from Barkell, installation and wiring by
others on site)
For further information about the external control
functions of the Therm-X controls please contact our
offices.
2.10.4. COMMUNICATION
The unit can be set-up and controlled via the
handheld touchscreen controller supplied or via the
BMS.
Handheld Controller
The handheld control panel is a powerful tool for
setting up and operating the Therm-X units.
End user level functions:
Adjusting operational parameters –set point
temperature, airflow
Activate BOOST MODE
Set TIME SCHEDULING
Display alarms and faults in detail
Monitor the unit operation
Near Field Communication (NFC)
Commissioning level functions:
Full set-up and calibration of the unit
Select and set up ventilation modes
Set-up secondary ventilation modes –BOOST,
TRICKLE, FREECOOLING
Set airflow offset, temperature limits, etc..
Test individual components
Set end-user level access protection
The handheld controller has a fully touchscreen
based interface with full RGB colour scheme and
supports NFC communication.
The controller must be wired to the unit with a
suitable communication cable (not supplied by
Barkell, UTP CAT5 cable as minimum is
recommended, by others on site) not exceeding a
length of 50m.
BMS integration
BMS integration is provided by connecting the unit
control panel through a BacNet TCP/IP, MODBUS
RTU (RS485) and MODBUS TCP/IP protocol
allowing full control and monitoring of the unit.
Other protocols can be enabled with the use of an
gateway converter (not sold by Barkell, must be
programmed by a BMS or controls specialist).

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2.10.5. CONTROLS SET-UP
The set-up of the controls on the Therm-X unit can
be performed by one of our experienced
commissioning teams.
We offer the following options to perform the
commissioning of your Therm-X units:
Site attendance for demonstration of controls
set-up
With this option one of our experienced engineers
will attend to site for one day and demonstrate how
to calibrate and set the controls for one Therm-X unit.
Site attendance for controls set-up
With this option one of our experienced engineers
will attend to site to check the installation and wiring
of every unit as well as calibrate and set up the
controls to the required project design conditions.
For additional information about our commissioning
options please contact our offices.
Please note:
Any mechanical or electrical works must be
completed before our engineers attend to site to
set-up the controls
Barkell will not perform the integration of the
units to the BMS
Demonstration of specific controls functionality
and witnessing is not included and must be
requested separately
2.11. SERVICE SOFTWARE
The Therm-X service software allows full control of
the equipment and easy commissioning with a user-
friendly interface.
The software can also be used to easily transfer
settings between units making the commissioning of
large identical installations much swifter.
2.12. WARRANTY
All units are provided with 36 months warranty
starting from the date of delivery.
The warranty covers replacement parts only.

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3. OPERATIONAL DIAGRAM
PLAN VIEW (BOTTOM)
Key:
OTA - Outside air
SUP - Supply air
ETA - Extract air
EHA - Exhaust air
*External cooling modules with DX and WCO coils are also available (supplied loose, installation and wiring on site by others)
**Optional F9 supply filter available
1
EC plenum fan
2
Panel filter - supply F7**, return M5
3
Optional electric pre-heating coil
4
Optional post-heating coil - Electric or LPHW*
5
Condensate collection and disposal
6
PHE with bypass damper

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4. AIRFLOW PERFORMANCE
Airflow performance as tested to ISO 5801:2007, Installation category D:
HRFL2-040
HRFL2-070
PLEASE NOTE:
-Performance is shown for standard configuration with F7 supply and M5 extract filters, clean filters, SPI is for
both fans
-For accurate performance data please request a detailed software selection

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Technical Manual
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Airflow performance as tested to ISO 5801:2007, Installation category D:
HRFL2-150
HRFL2-200
PLEASE NOTE:
-Performance is shown for standard configuration with F7 supply and M5 extract filters, clean filters, SPI is for
both fans
-For accurate performance data please request a detailed software selection

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5. HEAT RECOVERY PERFORMANCE
Heat recovery efficiency as tested to EN 308:1997:
PLEASE NOTE:
-Heat recovery efficiency is measured under the following conditions:
-Outdoor air conditions: 5°C / 72%
-Indoor air conditions: 25°C / 28%
-Efficiencies stated are for dry conditions
-For accurate heat recovery performance data please request a detailed software selection

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6. ACOUSTIC PERFORMANCE
HRFL2-040
Air Volume
[m3.h-1]
Air Volume
[m3.s-1]
ESP
[Pa]
SFP
[W.(l.s)-1]
Casing Breakout @ 3m
[dB(A)]
340
0.09
200
1.90
34
255
0.07
200
1.67
31
170
0.05
200
1.62
28
403
0.11
150
1.90
35
302
0.08
150
1.52
31
202
0.06
150
1.32
27
450
0.13
100
1.90
36
338
0.09
100
1.40
32
225
0.06
100
1.07
26
480
0.13
50
1.84
36
360
0.10
50
1.26
33
240
0.07
50
0.85
26
HRFL2-070
Air Volume
[m3.h-1]
Air Volume
[m3.s-1]
ESP
[Pa]
SFP
[W.(l.s)-1]
Casing Breakout @ 3m
[dB(A)]
420
0.12
200
1.90
33
315
0.09
200
1.78
33
210
0.06
200
1.82
33
555
0.15
150
1.90
33
416
0.12
150
1.59
32
278
0.08
150
1.43
31
650
0.18
100
1.90
34
488
0.14
100
1.46
30
325
0.09
100
1.17
29
730
0.20
50
1.89
35
548
0.15
50
1.34
30
365
0.10
50
0.95
26
PLEASE NOTE:
-Performance is shown for standard configuration with F7 supply and M5 extract filters, midpoint filters
-Casing breakout at 3 meters calculated for a non-punctiform source and spherical propagation as described
in ISO 3744
-For accurate acoustic performance data please request a detailed software selection

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HRFL2-150
Air Volume
[m3.h-1]
Air Volume
[m3.s-1]
ESP
[Pa]
SFP
[W.(l.s)-1]
Casing Breakout @ 3m
[dB(A)]
800
0.22
200
1.90
36
600
0.17
200
1.76
32
400
0.11
200
1.77
29
1035
0.29
150
1.90
37
776
0.22
150
1.60
32
518
0.14
150
1.42
28
1200
0.33
100
1.90
37
900
0.25
100
1.47
31
600
0.17
100
1.16
26
1339
0.37
50
1.90
38
1004
0.28
50
1.37
30
670
0.19
50
0.95
24
HRFL2-200
Air Volume
[m3.h-1]
Air Volume
[m3.s-1]
ESP
[Pa]
SFP
[W.(l.s)-1]
Casing Breakout @ 3m
[dB(A)]
1733
0.48
200
1.88
41
1300
0.36
200
1.44
38
867
0.24
200
0.00
36
1850
0.51
150
1.76
39
1388
0.39
150
1.27
36
925
0.26
150
1.06
34
1965
0.55
100
1.66
38
1474
0.41
100
1.11
34
983
0.27
100
0.85
31
2075
0.58
50
1.56
37
1556
0.43
50
0.96
31
1038
0.29
50
0.67
28
PLEASE NOTE:
-Performance is shown for standard configuration with F7 supply and M5 extract filters, midpoint filters
-Casing breakout at 3 meters calculated for a non-punctiform source and spherical propagation as described
in ISO 3744
-For accurate acoustic performance data please request a detailed software selection

Therm-X MVHRU HRFL II
Technical Manual
Page 18 of 46
Version 2.3, 24/06/2020
7. TECHNICAL DATA
7.1. ELECTRICAL CHARACTERISTICS
Models without electric pre-heating coil and…without coil / with water heating coil / with WCO coil / with
DX coil
Unit
Type
Phase
Voltage
[V]
Frequency
[Hz]
Power Input
[kW]
Full load current
per phase [A]
HRFL2-040
1
230 V
50 Hz
0.23
2.2
HRFL2 070
1
230 V
50 Hz
0.33
2.5
HRFL2-150
1
230 V
50 Hz
1.10
6.8
HRFL2-200
1
230 V
50 Hz
1.10
6.3
Models without electric pre-heating coil and…with electric post heating coil
Unit
Type
Phase
Voltage
[V]
Frequency
[Hz]
Power Input
[kW]
Full load current
per phase [A]
HRFL2-040
1
230 V
50 Hz
1.10
5.7
HRFL2-070
1
230 V
50 Hz
1.80
8.6
HRFL2-150
1
230 V
50 Hz
3.80
18.5
HRFL2-200
3
400 V
50 Hz
5.90
12.3
Model with electric pre-heating coil and…without coil / with water heating coil / with WCO coil / with DX
coil
Unit
Type
Phase
Voltage
[V]
Frequency
[Hz]
Power Input
[kW]
Full load current
per phase [A]
HRFL2-040
1
230 V
50 Hz
1.70
8.3
HRFL2-070
1
230 V
50 Hz
3.10
14.3
HRFL2-150
3
400 V
50 Hz
6.40
13.3
HRFL2-200
3
400 V
50 Hz
8.30
16.7
Model with electric pre-heating coil and with electric post heating coil
Unit
Type
Phase
Voltage
[V]
Frequency
[Hz]
Power Input
[kW]
Full load current
per phase [A]
HRFL2-040
1
230 V
50 Hz
2.50
11.8
HRFL2-070
3
400 V
50 Hz
4.50
11.8
HRFL2-150
3
400 V
50 Hz
9.10
18.5
HRFL2-200
3
400 V
50 Hz
13.10
22.5
Fan electric motor (per fan)
Unit
Type
Phase
Voltage
[V]
Frequency
[Hz]
Power
Input [kW]
Full Load
Current [A]
Speed
[rpm]
Protection
IP
Insulation
class
HRFL2-040
1
230 V
50 Hz
0.12
1.10
3640
54
B
HRFL2-070
1
230 V
50 Hz
0.17
1.25
2530
44
B
HRFL2-150
1
230 V
50 Hz
0.46
2.80
2600
54
B
HRFL2-200
1
230 V
50 Hz
0.50
3.15
1890
54
B

Therm-X MVHRU HRFL II
Technical Manual
Page 19 of 46
Version 2.3, 24/06/2020
Electric post heating coil
Unit
Type
Phase
Voltage
[V]
Frequency
[Hz]
Power Input [kW]
HRFL2-040
1
230 V
50 Hz
0.80
HRFL2-070
1
230 V
50 Hz
1.40
HRFL2-150
1
230 V
50 Hz
2.70
HRFL2-200
3
400 V
50 Hz
4.80
Electric pre heating coil
Unit
Type
Phase
Voltage
[V]
Frequency
[Hz]
Power Input [kW]
HRFL2-040
1
230 V
50 Hz
1.40
HRFL2-070
1
230 V
50 Hz
2.70
HRFL2-150
3
400 V
50 Hz
5.30
HRFL2-200
3
400 V
50 Hz
7.20

Therm-X MVHRU HRFL II
Technical Manual
Page 20 of 46
Version 2.3, 24/06/2020
8. OPTIONAL COIL PERFORMANCE
LPHW
Unit
Type
Air
Volume
[m3.h-1]
Air
Volume
[m3.s-1]
Without Heat Recovery
With Heat Recovery
Air On
[oC]
Air Off
[oC]
Capacity
[kW]
Fluid Pd
[kPa]
Air On
[oC]
Air Off
[oC]
Capacity
[kW]
Fluid Pd
[kPa]
HRFL2-040
410
0.11
-5.0
18.5
3.2
2.0
16.7
32.5
2.2
1.0
HRFL2-070
615
0.17
-5.0
20.3
5.2
6.0
17.4
34.5
3.5
3.0
HRFL2-150
1150
0.32
-5.0
20.3
9.8
26.0
17.2
34.6
6.7
14.0
HRFL2-200
1875
0.52
-5.0
20.4
16.0
9.0
16.6
34.1
11.0
5.0
PLEASE NOTE
-Heat recovery calculated based on the following conditions:
-Ambient: -5 oC / 90% RH
-Room: 21 oC / 50% RH
-Coil capacity calculated based on the following conditions:
-Air density: 1.2 kg.m-3
-LPHW Flow: 80 oC, LPHW Return: 60 oC, no glycol
-For accurate coil performance data please request a detailed software selection
WCO
Cooling
Unit
Type
Air
Volume
[m3.h-1]
Air
Volume
[m3.s-1]
Without Heat Recovery
With Heat Recovery
Air On
[oC]
Air Off
[oC/%]
Capacity
[kW]
Fluid Pd
[kPa]
Air On
[oC]
Air Off
[oC]
Capacity
[kW]
Fluid Pd
[kPa]
HRFL2-040
410
0.11
28.0
17.5
1.7
5.0
24.8
16.9
1.4
4.0
HRFL2-070
615
0.17
28.0
16.3
3.1
6.0
24.6
15.7
2.6
4.0
HRFL2-150
1150
0.32
28.0
16.8
5.4
3.0
24.7
16.2
4.4
3.0
HRFL2-200
1875
0.52
28.0
16.1
9.9
5.0
24.8
15.5
8.3
3.0
PLEASE NOTE
-Heat recovery calculated based on the following conditions:
-Ambient: 28 oC / 50% RH
-Room: 24 oC / 50% RH
-Coil capacity calculated based on the following conditions:
-Air density: 1.2 kg.m-3
-CHW Flow: 6 oC, CHW Return: 12 oC, no glycol
-For accurate coil performance data please request a detailed software selection