D U P L E X E A S Y
Compact ventilation units
with heat recovery and EC fans
Residential ventilation and heating – issue 01/2016
Intended use
The new heat recovery units DUPLEX Easy are supplied in
three sizes:
=
DUPLEX 250 Easy
=
DUPLEX 300 Easy
=
DUPLEX 400 Easy
The units are intended for the comfort ventilation of all types of
residential and civil premises. They are particularly suitable for
low-energy and passive houses and flats in apartment buildings
with a decentralized ventilation system.
General description
The casing of the unit is made of environmentally friendly EPP
(expanded polypropylene), which is also characterized
byminimal moisture absorption and stability over a wide range
of temperatures. The basic version of DUPLEX Easy unit
consist of EPP housing, counter-flow heat exchanger made
ofplastic (efficiency up to 93 %), two free wheel type fans with
electronic EC control, G4 (optionally F7) supply and exhaust air
filters upstream the heat recovery exchanger. Depending the
type oncontrol system, the unit can be equipped with several
different functions and accessories (see the chart on page 4).
The Construction of the unit provides high variability, and the
same unit can be installed in 5 different positions (2 floor-
standing, 2underceiling and 1 floor-standing flat). Condensate
outlets on DUPLEX Easy are ready for all possible mounting
positions. Connecting ports are of a circular type for flexible
orrigid ducts with thermal bridging reduction.
Advantages of DUPLEX Easy units
=
High efficient EC fans
=
High heat recovery efficiency of the counter flow heat
exchanger
=
Great thermal and mechanical parameters of the housing
=
Very flat unit (280 mm) suitable for underceiling
installation
=
An option of the mirror-wise change of the right hand /
left hand side position
=
Light weight of the unit
=
Ease of filter changing
=
Frost protection (optionally built-in)
=
Bypass with actuator (optionally built-in)
=
Four types of control systems (see page 4)
C
ounter-flow heat exchanger
with efficiency up to 93 %
EC fans
Bypass damper with actuator
Air filters G4 or F7
Circular port
EPP housing
1
2
3
4
5
6
touch screen
controller CPA (CS2)
2
2
6
3
1
4
5
5
5
5
4
controller CPB (CS1)
alter.
A
DUPLEX Easy
R E S I D E N T I A L V E N T I L A T I O N & H E A T I N G
ATREA s.r.o., Čs. armády 32
Fax: +420 483 368 112
w w w . a t r e a . e u
E-mail: atrea@atrea.eu
Tel.: +420 483 368 111
Czech Republic
466 05 Jablonec n. Nisou
TECHNICAL DATA – DUPLEX EASY
H E A T R E C O V E R Y E F F I C I E N C Y E A S Y
T E C H N I C A L D A T A E A S Y
DUPLEX Easy
250
300
400
Supply air – max.
3
m /h
280
330
430
Extract air – max.
3
m /h
280
330
430
Max. heat recovery efficiency
%
93
93
93
Max. power consumption of fans
W
120
120
220
Width B
mm
660
820
820
Dimension D
mm
425
435
435
Diameter of connecting ports
mm
160
160
160
Weight
kg
20
21
21
By-pass
–
optional
Voltage
V
230 / 50 Hz
Supply air filter class
–
G4 (alter. F7)
Condensate drain
mm
6x 14 (depending on position)
Heat recovery efficiency (%)
100
90
70
95
80
75
85
3
Volume flow rate (m /h)
0
50
Possible condensation region
M = M
i e
150
100 200 250 350300 400 450
250
Easy
300 Easy
400
Easy
P E R F O R M A N C E P A R A M E T E R S E A S Y
Legend:
Pressure reserve with filter G4*
Qref Reference flow rate
Qmax Maximum flow rate
* Max. pressure reserve curve is shown
* Electrical power consumption is shown (both fans and control system)
Pressure reserve p (Pa)
st
3
Volume flow rate (m /h)
D U P L E X 2 5 0 E A S Y
300
0
100
0 150 200
200
10050
400
600
300250 350
500
Pressure reserve p (Pa)
st
D U P L E X 3 0 0 E A S Y
300
0
100
0 150 200
200
10050
400
600
300250 350
500
Pressure reserve p (Pa)
st
D U P L E X 4 0 0 E A S Y
300
0
100
0 150 200
200
10050
500
900
300250 450
700
350 400
600
800
400
D I M E N S I O N A L D I A G R A M E A S Y
850
280
4545
CM
210
100
190
20
80
22,5
22,5B - 45
805
100
190
20
80
135
120
65
165
198
165
K1 K1
K2
K3
K2
K2 K2
K1 K1 K1
K3, K4
K1
K2K2
K3
B
K4
90
D
K3, K4
K4
K1 ... Condensate drain for floor-standing position
K2 ... Condensate drain for underceiling position
K3 ... Condensate drain for floor-standing flat position
K4 ... Condensate drain for floor-standing flat position
* For both floor-standing and underceiling position use only one appropriate
condensate drain.
** For floor-standing flat use both condensate drains.
To achieve acceptable acoustic values it is necessary to install air distribution with guaranteed acoustic attenuation.
* Approximately it is possible to reduce sound power on outlet e , i to following values:
2 2
=
L = 52 dB (A) – using 1 m of soundproofed pipe
w
=
L = 43 dB (A) – using 2 m of soundproofed pipe
w
=
L = 37 dB (A) – using 3 m of soundproofed pipe
w
** Acoustic values of the units with SK cover – see accessories
A C O U S T I C P O W E R L A N D A C O U S T I C P R E S S U R E L
W P
Type
Working point
Acoustic power L [dB(A)]
w
Acoustic pressure L [dB(A)]
p
at distance of 3 m
inlet e
1
inlet i
1
outlet e
2
outlet i
2
unit
DUPLEX 250 Easy
3
200 m /h (100 Pa)
53
53
74*
74*
60 / 54**
40 / 33**
DUPLEX 300 Easy
3
250 m /h (100 Pa)
51
51
74*
74*
61 / 54**
40 / 34**
DUPLEX 400 Easy
3
300 m /h (100 Pa)
50
50
75*
75*
62 / 55**
42 / 35**
A
A
A
1)
All types of control system that are built in within the unit commonly include at
least two inputs, so the electrical signals from human operation of lights or other
equipment, that automatically control the performance of the unit, can be
connected. These inputs or other types of sensors must always be connected
(e.g. CO , VOC, rH etc.)
2
2)
Maximum flow rate at 100 Pa
3)
The value is at reference flow rate it means 70 % of maximum flow rate
and50Pa
4)
Acoustic values of the units with SK cover – see accessories
48 W
112 W
58 W
126 W
87 W
218 W
DUPLEX EASY
Note: DUPLEX Easy units are supplied for versatile position mounting – the unit can be installed in all positions (floor-standing, underceiling and floor-standing
flat). The ”right hand” and ”left hand” position according to the figure above is selected simply by relocating the operating sensor and by reconnecting unit fans.
M O U N T I N G P O S I T I O N S
F L O OR -S T A N D I N G U N D ER CE I L I N G F L O OR -S T A N D I N G F L AT
L E G E N D
e Fresh outdoor air suction
1
e Fresh filtered air outlet
2
i Exhaust air suction
1
i Exhaust air outlet
2
CM Control module
e
1
e
2
i
2
i
1
RM
i
2
e
1
i
1
RM
e
2
e
1
e
2
i
2
i
1
RM
i
2
e
1
i
1
RM
e
2
i
1
i
2
e
2
e
1
RM
K1 K1
K2
K2
K3K4
I N S T A L L A T I O N
DUPLEX Easy – underceiling position
New DUPLEX Easy units have a very flat design that allows installing
them into even very low suspended ceilings. The minimum
requirements for suspended ceiling void height is 305 mm.
A plasterboard lid is fitted below the unit.
X
Hmin. 25
12
DUPLEX Easy
removable door
C O N D E N S A T E D R A I N
Condensate drainage
During heat recovery – heat regaining – moisture is condensated during the cooling of exhaust air. Water condensates on the walls of the
heat recovery exchanger, further increasing heat recovery efficiency. Condensate runs out of the heat recovery exchanger in the direction
of air being extracted and is drained from the DUPLEX unit into a sewer system. For correct functioning and drainage the unit must be
separated from the sewer system using a siphon of asufficient height, the recommended minimum being 150 mm. Small condensation
drain pumps may be used. The unit must be installed within the specified gradient for each position.
e
1
e
2
i
2
i
1
RM
min. 150
min. 150
HL 21
Inlet into
sewer
K1
F L O OR -S T A N D I N G U N D ER CE I L I N G
min 150
min 150
HL 21
Inlet into
sewer
K2
F L O OR -S T A N D I N G F L AT
min. 150
HL 21
Inlet into
sewer
min. 150
K3
K4
i
2
i
1
i
2
3° = 25 mm
10° = 75 mm
12° = 100 mm
3° = 25 mm
CONTROLS
Type Description Controller
„Without control
system“
All electrical components are wired to a junction box
inside the unit. This solution is suitable for applications
with computer-based control system (BMS) installed in
buildings that controls and monitors the building’s
mechanical and electrical equipment.
=
Without controller
=
Frost protection – fan disballance
=
Automatic by-pass with servo drive
“CS1“ controls
This is the starting level of the DUPLEX Easy control
system that gives basic functions of controlling of the
unit. CS1 version comes with an installed controller.
“RD5“ controls
This ATREA proprietary control system meets all
requirements for high-demand controlled ventilation.
The great advantage is the integrated web server as
standard.
S U M M A R Y O F D U P L E X E A S Y C O N T R O L S Y S T E M S
“CS2“ controls
This version meets higher requirements and is fully
ready for modern comfort living. This level of our control
system comes with a touch screen controller.
=
Volume flow
=
Frost protection – preheater (EPO-PTC) or fan
disballance
=
Reheating (EPO-PTC)
=
Automatic by-pass with servo drive
=
Analogue input (0–10 V) for air quality sensor
=
Minimum and maximum
speed preselection
=
Inlet and outlet shut-off damper
control
=
Automatic or manual mode
=
Frost protection – preheater (EPO-PTC) or fan
disballance
=
Reheating (EPO-PTC)
=
Analogue input (0–10 V) for air quality sensor
=
Inlet and outlet shut-off damper control
=
Manual or weekly program
=
Room temperature display
=
Party mode, holiday mode
=
Filter change notice
=
Minimum and maximum
speed preselection
=
Frost protection – preheating
(EPO-PTC) or fan disballance
=
Optional constant flow function
=
Modbus TCP
=
Analogue / digital input
=
Right or left configuration just through
the controller setting
=
Weekly programming
=
A ventilation run-down and delay time option
=
Boost and party mode
=
Combined heating and preheating (EPO-PTC) –
electrical or water based
• Used as a preheater to preheat fresh air, to be
installed in ducts on fresh air inlet
• Used as an afterheater to reheat supply air, to
be installed in ducts after the unit
• Integrated PTC (Positive Temperature
Coefficient) heating elements
• Housing includes a terminal board
and internal wiring
• Includes two protection thermostats –
areversible one and a safety irreversible one
• Contains an interference-free SSR relay
asstandard
• Perforated metal filter to protect heater from
gross particles (easily cleanable)
• Galvanized sheet metal housing
E L E C T R I C H E A T E R S E P O - P T C
D
(mm)
Voltage
(V)
Power input
(kW)
EPO-PTC 160 / 0,4 kW
160
1x 230 V
~
0,4
EPO-PTC 160 / 0,7 kW
160
1x 230 V
~
0,7
EPO-PTC 160 / 1,7 kW
160
1x 230 V
~
1,7
SK / 250
Special two-piece cover made of galvanized metal sheet (silver color) for better
acoustic parameters
of the DUPLEX Easy.
SK / 300
O P T I O N A L A C C E S S O R I E S – S K C O V E R
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