Envirovent energiSava 300 User manual

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01
01 Safety Instructions
IMPORTANT
Be sure to have read and understood these
instructions before beginning the installation
process.
PRE-INSTALLATION CHECK LIST
Make sure that the unit can physically t in to
the desired location.
SAFETY AND RECOMMENDATIONS
• This appliance can be used by children
aged from 8 years and above and
persons with reduced physical, sensory or
mental capabilities or lack of experience
and knowledge if they have been given
supervision or instruction concerning
use of the appliance in a safe way and
understand the hazards involved. Children
shall not play with the appliance. Cleaning
and user maintenance shall not be made
by children without supervision.
Installation must take place under:
• Quality requirements ventilation systems
in dwellings.
• Quality requirements balanced ventilation
in dwellings.
• The regulations for ventilation of dwellings
and residential buildings.
• The safety regulations for low-voltage
installations.
• The regulations for connection to interior
sewers in dwellings and residential
buildings.
• Any additional regulations of the local
utilities.
• The installation instructions for the
energiSava 300 & 400

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02 Technical Specications
1. Heat recovery appliance type energiSava
300 & 400
2. Wall mounting bracket kit containing:
• 2 x suspension strips
• 3x protective caps
• 1 x rubber strip
• 2 x rubber rings
• 1 x mounting instructions
3. PVC condensate discharge connection
containing:
• 1 x synthetic screw gland 1.5”
• 1 x sealing ring
• 1 x PVC glued coupling 32 mm
4. Documentation set consisting:
• 1 x installation instructions
Before you begin to install the heat recovery unit, check that it has been supplied complete
and undamaged.
The energiSava 300 & 400 units should include the following components:

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03
02 Technical Specications
The energiSava 300 & 400 are ventilation
units with heat recovery incorporating a high
eciency heat exchange cell, a maximum
ventilation capacity of 300 or 400 m3/h and
low-energy fans.
Features:
• Steplessly adjustable air ow rates through
a control panel;
• Filter indication on the appliance and
the possibility for lter indication on the
multiple switch;
• A completely new intelligent frost
protection system. This ensures that
even at low outdoor temperatures the
appliance's performance remains optimal
and that, if necessary, it activates the
standard preheater.
• Low sound level
• Comes as standard with automatic bypass
valve
• Constant ow control
• Low energy consumption
• High eciency
The energiSava 300 & 400 are available in
two types:
• Standard version
• Plus version
Compared to the standard version, the Plus
version has a more extensive control board
which increases the connection options.
These installation instructions describe both
the standard and the Plus versions.
The Plus version is available in the left-
handed or right-handed version. A left-
handed version has the lters on the left
behind the lter door; a right-handed version
has the lters on the right behind the ltered
door. The position of the air ducts diers for
these two versions. For the correct position
of the connection ducts and dimensions
(see pages 9-10).
When ordering an appliance always state
the correct type; subsequent conversion to
a dierent version is not possible.
The energiSava 300 & 400 comes ready
to wire into the 230V mains fuse spur and
has a connection for a low-voltage multiple
switch on the outside of the appliance.

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02 Technical Specications
Version types energiSava 300 & 400
Type Version L or R Position air ducts Power
supply Type code
energiSava
300 & 400
(standard version)
Left-handed
version 4 top connections Power cable 4/0 L
Right-hand
version 4 top connections Power cable 4/0 R
energiSava
300 & 400
(Plus version)
Left-handed
version 4 top connections Power cable 4/0 L+
Right-hand
version 4 top connections Power cable 4/0 R+

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05
02 Technical Specications
energiSava 300
Supply voltage (V/Hz) 230/50
Protection degree IP30
Dimensions (w x h x d) (mm) 677 x 765 x 564
Duct diameter (mm) Ø160 / Ø150
External diameter condensate
discharge (mm) Ø32
Weight (kg) 38
Filter class G3 (F7 optional for supply)
Fan setting (factory setting) 1 2 3
Ventilation capacity (m3/h) 50 100 150 225
Permissible resistance ducts
system (Pa) 3 - 7 11 - 28 26 - 66 56 - 142
Rated power (excl. preheater) (W) 9.0 - 9.2 13.7 - 15.2 22.0 - 29.2 46.8 - 66.2
Rated current (excl. preheater) (AA) 0.104 - 0.107 0.150 - 0.161 0.214 - 0.274 0.403 - 0.578
Max. rated current (with preheater
switched on) (A) 6
Cos φ 0.368 - 0.374 0.391 - 0.416 0.447 - 0.463 0.505
Sound Power energiSava 300
Ventilation capacity (m3/h) 90 150 210 300
Sound power level Lw
(A)
Static pressure (Pa) 50 100 50 100 50 100 50 100
Housing emission dB(A) 30 33 38 38 44 46 50 52
Duct from dwelling dB(A) 33 34 39 42 45 46 54 54
Duct to dwelling dB(A) 44 47 52 55 60 60 67 67
In practice, the value may deviate 1 dB(A) as a result of measuring tolerances

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02 Technical Specications
0
25
50
75
100
125
150
175
200
225
250
275
300
325
350
375
400
0 25 50 75 100125150175200225250275300325
Weerstand kanaalsysteem [Pa]
Volumestroom [m³/h]
46
19
28
23
11
7
5
52
26
33
44
69
12
23
27
33
8
15
Resistance ducts system (Pa)
Flow rate [m3/h]
Note: The value stated in
the circle is the capacity
per fan (in Watt)
energiSava 300 fan graph

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02 Technical Specications
energiSava 400
Supply voltage (V/Hz) 230/50
Protection degree IP30
Dimensions (w x h x d) (mm) 677 x 765 x 564
Duct diameter (mm) Ø180
External diameter condensate
discharge (mm) Ø32
Weight (kg) 38
Filter class G3 (F7 optional for supply)
Fan setting (factory setting) 1 2 3
Ventilation capacity (m3/h) 50 100 200 300
Permissible resistance ducts
system (Pa) 3 - 6 6 - 20 25 - 79 56 - 178
Rated power (excl. preheater) (W) 8.6 9.5 - 15.0 29.0 - 40.0 72.0 - 98.0
Rated current (excl. preheater) (AA) 0.10 0.12 - 0.14 0.24 - 0.31 0.51 - 0.70
Max. rated current (with preheater
switched on) (A) 6
Cos φ 0.38 0.45 - 0.40 0.56 - 0.58 0.60 - 0.61
Sound Power energiSava 400
Ventilation capacity (m3/h) 100 200 225 300 400
Sound
power
level
Lw (A)
Static pressure (Pa) 9 40 38 80 47 100 84 175 240 150 225
Housing emission dB(A) 29.5 32.5 40.5 40.5 43.5 47.5 51.0 53.0 54.0 54.5 57.0
Duct from dwelling dB(A) 31.5 34.5 46.5 48.0 48.5 50.0 56.5 57.0 58.0 59.0 60.0
Duct to dwelling dB(A) 42.5 47.5 57.0 59.0 60.5 62.5 66.0 68.5 69.5 70.5 71.5
In practice, the value may deviate 1 dB(A) as a result of measuring tolerances

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0
25
50
75
100
125
150
175
200
225
250
275
300
325
350
375
400
0 25 50 75 100125150175200225250275300325350375400425
79
86
83
71
58
51
49
40
36
32
28
23
20
17
15
710
12
5
26
22
19
02 Technical Specications
Resistance ducts system (Pa)
Flow rate [m3/h]
Note: The value stated in
the circle is the capacity
per fan (in Watt)
energiSava 400 fan graph

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09
02 Technical Specications
Connections & dimensions - Right handed version
1. To dwelling
2. To atmosphere
3. From dwelling
4. From atmosphere
5. Electric connections
6. Connection condensate discharge
7. Wall mounting bracket (note the
correct position of the rubber strip,
washers and caps)
Right-handed 4/0

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02 Technical Specications
Connections & dimensions - Left handed version
Left-handed 4/0
7
Mounting wall suspension kit

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02 Technical Specications
Rear view display cover
(Plus version)
1 Service connector Computer connection for service purposes
2 Display and 4 control buttons Interface between user and control electronics
3 Control board Contains the control electronics for the basic functions
4Extract air lter Filters air ow from dwelling
5 Preheater Heats up the outdoor air when there is a risk of freezing in the heat exchanger
6 Heat exchanger Ensures heat transfer between input and output air
7Supply air lter Filters outdoor are supplied to the dwelling
8 Bypass valve Sends the air through or around the heat exchanger (For 4/0 this valve is
in the upper part of the appliance)
9 Outdoor temperature sensor Measures outside air temperature
10 Indoor temperature sensor Measures the dwelling air temperature
11 Condensate discharge Connection condensate discharge (Kit comes separately with the appliance)
12 Extract fan Discharges air from the dwelling to the atmosphere
13 Supply fan Feeds fresh air into the dwelling
14 Modular connector multiple switch X2 Connections for cable to multiple switch, if desired with lter indicator
15 Connector eBus X1 Connection for eBus control
16 Connector X15 Contains the various control inputs and outputs; only for Plus version
17 Connector X14 Connection postheater; only for Plus version (accessible after taking o
the display cover)
18 Mains cable 230V Gland power cable 230V
19 Connection to postheater Gland 230V cable to postheateror extra preheater; only for Plus version

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02 Technical Specications
The appliance is supplied ready to wire into
the fuse spur and operates fully automatically.
The extracted indoor air heats up the fresh,
clean outdoor air. That saves energy and
fresh air is sent to the required rooms.
The control system has three ventilation
modes. The air ow rate can be adjusted
per ventilation mode. The constant volume
control system ensures that the air ow
rate of the supply and extract fans is
always delivered despite any resistance
encountered in the ductwork.
The standard bypass valve makes it possible
to supply fresh outside air that is not heated
by the heat exchanger. Particularly during
summer nights it is desirable to supply
cooler outside air. In this mode the hot air in
the dwelling is replaced by cooler outside air
as far as possible.
The bypass valve opens and closes
automatically when a number of conditions
are satised (refer to the table below for
bypass conditions).
The operation of the bypass valve can be
adjusted in step number 5, 6 and step
number 7 in the settings menu (see page
41).
To prevent freezing of the heat exchanger
at extremely low outdoor temperatures,
the energiSava 300 & 400 features an
intelligent frost control. Temperature sensors
measure the temperatures across the heat
exchanger and, if necessary, the preheater
is switched on. This guarantees a proper
ventilation balance, even at very low outdoor
temperatures.
Bypass valve open
-The outdoor temperature is higher than 10°C and
-The outdoor temperature is lower than the indoor temperature in the
dwelling and
-The temperature in the dwelling is higher than the temperature set at step
no.5 in the settings menu
(set a standard at 22°C).
Bypass valve closed
-The outdoor temperature is lower than 10°C or
-The outdoor temperature is higher than the indoor temperature in the
dwelling or
-The temperature from the dwelling is lower than the temperature set at
step no. 5 in the settings menu minus the set temperature by the hysteresis
(tolerance) (step no. 6), this temperature is factory set at 20°C (22.0°C
minus 2.0°C).

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The energiSava 300 & 400 are also available as a Plus version. This version is equipped with
a dierent control board with 2 additional connectors (X14 & X15) with more connection
options for various applications.
The 9-pole connector X15 is accessible at the rear of the unit display cover without having
to open the appliance.
The 2-pole connector X14 is accessible after taking o the display cover. The display cover of
the “Plus” version has a second gland. That makes it possible to feed a 230 volt cable, which
may be connected to connector X14, to outside the appliance.
See page 33 for more information on the connection possibilities of connectors X14 and X15.
Plus version
02 Technical Specications

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03 Accessories
Splitter RJ12 Control unit
CO2 sensor, ush
mounted eBus or
surface mounted
0-10V proportional
(PLUS version only)
Electric postheater
energiSava 300
Ø160mm
energiSava 400
Ø180mm
Transmitter wireless
remote control 2
positions (with. battery)
Electric (extra) preheater
energiSava 300
Ø160mm
energiSava 400
Ø180mm
Transmitter wireless
remote control 4
positions (with. battery)
Filter kit 1 x F7 lter
(1 pcs)
Receiver wireless remote
control (for battery
version)
Filter kit 1x G3 & 1x F7
(1 pcs/ 1 pcs)
Kit wireless remote
control 2 positions (1
transmitter & 1 receiver)
RH sensor
Kit wireless remote
control 4 positions (1
transmitter & 1 receiver)
Mounting support
3-way switch white
ush-mounted
(without lter indication)
Delivered with insert plate
and cover frame
Enthalpie
heat exchanger
4-way switch with lter
indication; ush mounted;
modular connection.
Delivered with insert plate
and cover frame
Service tool
F7
G3 +F7 G4 +F7 2X G3 2x G4
G4 + Frame
F7
G3 +F7 G4 +F7 2X G3 2x G4
G4 + Frame

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04 Installation Instructions
Placing the appliance
The energiSava 300 & 400 units can be
mounted directly to the wall using the
suspension brackets supplied for that
purpose. For a vibration-free result the
appliance must be mounted to a solid wall
with a minimum mass of 200 kg/m2. A
gypsum block or metal stud wall will not
suce. Additional measures such as double
panelling or extra studs are required in
that case. On request, a mounting support
for oor mounting is available. In addition,
the following aspects must be taken into
account.
• The appliance must be placed level.
• The installation room must be such that a
good condensate discharge with air trap
and pitch for condensate can be made.
• The installation room must be frost-free.
• Make sure there is a free space of at least
70 cm at the front of the appliance and
a free headroom of 1.8m for cleaning the
lters and carrying out maintenance.
• Make sure there is a free space of at least
20 cm above the display cover so it can
always be removed.
Connecting the condensate discharge
The condensate discharge line for the
units is fed through the lower panel. The
condensate must be discharged through a
drainpipe. EnviroVent recommend using
KITCONDENSATE-BK.
Alternatively use a U-trap (sold separately)
which the installer must screw it into the
underside of the appliance.
This condensate discharge connection has
an external connecting diameter of 32 mm.
The condensate discharge line can be glued
to it, if necessary using a square bend. The
installer can glue the condensate discharge
in the desired position in the lower part of
the appliance. The drain must discharge
under the water level in the U-trap. Before
connecting the condensate discharge to
the appliance, pour water into the U-trap to
create an air trap.
Note: Add a teaspoon of oil to prevent
drying out. Alternatively use a non return
valve in place of the U-trap.
(Not used for UK)
Recommended
(KITCONDENSATE-BK)

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04 Installation Instructions
Connecting ducts
The air extract duct does not have to be
tted with a control valve. The appliance
controls the air ow rates itself. To prevent
condensation on the outside of the outdoor
air supply duct and the air exhaust duct
downstream of the units these ducts must
be provided with an external vapour barrier
as far as the appliance. If thermally insulated
piping is used here, additional insulation is
not necessary.
For compliance with the maximum installation
noise level of 30 dB, each installation will have
to be assessed individually and measures
put in place if required to limit the noise.
A section of acoustic duct with a minimum
length of 0.5m is required, but additional
measures may be necessary. Please contact
EnviroVent if you have any questions on this
subject.
For incorporated ducts pay attention to
crosstalk and installation noise. Design the
duct with separate branches to the valves
to prevent crosstalk. If necessary, the supply
ducts must be insulated, for instance when
they are installed outside the insulated
envelope of the building.
Preferably use EnviroVent incorporated
ducts. These ducts have been developed
with a view to a low duct resistance.
A duct diameter of 150mm is required for the
energiSava 400 connecting to the 180mm
spigot on the unit. The 400 units are supplied
with 4 X duct adaptors. The energiSava 300
also requires a 150mm duct connecting to a
160/150mm spigot.

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04 Installation Instructions
• Arrange the exterior air supply from the shadowed
side of the dwelling, preferably from the wall or
overhang. If the outdoor air is sucked in from under
the tiles, ensure that no condensation develops in the
roof boarding and no water can run into the duct.
Ventilation air can be sucked in from under the tiles if
air can access freely at the top and the bottom of the
roof area and the sewage vent stack does not end
under the tiles. Preferably use a domed style roof vent
with maximum free area for minimum resistance.
• Feed the extract duct through the roof boarding in
such a manner that no condensation develops in
the roof boarding.
• Install the extract duct between the unit and
the roof sleeve in such a manner that surface
condensation is prevented.
• Always use an insulated ventilation roof sleeve.
• The maximum permissible resistance in the duct
system is 150 Pa at the maximum ventilation capacity.
If the resistance of the duct system is higher, the
maximum ventilation capacity will be lower.
• The location of the mechanical ventilation output
and the sewer stack vent relative must be chosen
to prevent nuisance.
• Choose the location of the supply valves to
prevent fouling and draught. We recommend to
use the EnviroVent supply valves.
• When mounting exible ducts, bear in mind that it
must be possible to replace them in due course.
• Flexible duct must be kept to a minimum.
1=Left-handed 2/2 (place level)
2=Preferred ventilation air supply
3=Ventilation air supply under the tiles
4a=Free suction bottom roof area
4b=Free suction top roof area
5=Sewer vent
6=Preferred location extract ventilation air;
use insulated ventilation roof sleeve.
7=Thermally isolated pipe
8=Condensate discharge with U-trap or
non return valve
9=Muer
10=Ducts from and to dwelling
A = Spacing 10 mm above
roof deck
B = Roof insulation
C = Seal with foam
D = Pipe for make-up air to
be carefully insulated and
provided with vapour barrier
1 = EnviroVent supply valves
2 = Supply from wall
3 = Suction valve in ceiling or high in wall
4 = Prevent crosstalk
5 = Preferably incorporated ducts
a = Gap under the door 10mm after
nished oor level.

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04 Installation Instructions
Connecting the power
The appliance can be connected to an easily
accessible fused spur with the cable running
from the appliance. The electric installation must
comply with the wiring regulations.
Make allowance for the 1000 W preheater.
Connecting the multiple switch
The multiple switch (not supplied with the
appliance) is connected to the modular connector
type RJ12 (connector X2) that is placed at the
rear of the appliance’s display cover.
Dependent on the type of multiple switch that is
used, a plug RJ11 or RJ12 can be connected to it.
• Application of a 4-way switch with lter
indication in all cases requires an RJ12 plug
in combination with a 6-core modular cable.
• Application of a 3-way switch without lter
indication in all cases requires an RJ11 plug
in combination with a 4-core modular cable.
Refer to diagrams on page 34 for connection
examples multiple switch.
Other options include wireless remote control or
a combination of multiple switches.
The 4-way switch can also be used to activate
a 30-minutes boost mode by putting the switch
to setting 3 for less than 2 seconds and directly
turning it back to setting 1 or 2.
The boost mode can be reset by putting the
switch to setting 3 for longer than 2 seconds or
by switching it to absence mode ( ).
Connecting eBus or OpenTherm connector
The units can operate with Opentherm as well
as with eBus protocol. The setting of parameter
08 in the settings menu (see page 40) lets you
choose between eBus and OpenTherm.
An eBus or OpenTherm connection can be
made with the 2-pole connector X1 at the rear
of the display cover.
The eBus protocol can for instance be used
for coupling (cascade control) appliances (see
page 35). Because of polarity sensitivity, always
connect contacts X1-1 to X1-1 and contacts
X1-2 to X1-2 ; the appliance will not work when
these contacts are interchanged.
Warning
The fans and control board carry
a high voltage. Always remove
the voltage from the appliance by
isolating power when working on
the appliance.

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General explanation control panel
The LCD display shows what the operating
situation of the appliance is. Four control keys
can be used to call up and modify settings in
the control unit program.
When the mains power to the unit is switched
on, all display symbols will appear for 2 seconds;
at the same time the blue backlight is switched
on for 60 seconds. When one of the control
keys is operated, the display will light up for 30
seconds.
When no keys are operated or when no deviating
situation has developed (such as a blocking
fault) the display will show the operating mode
(see page 20).
After operating the key ‘Menu’, the keys “+” or
“-” can be used to select from three dierent
menus, including:
• Settings menu (SET); (see page 22)
• Readout menu (READ), (see page 23)
• Service menu (SERV), (see page 24)
Press the R key to leave any menu and return
to operating mode. Briey press the R key
(shorter than 5 seconds) to switch on the
display backlight without changing anything in
the menu.
A
05 Control Display
.
Key Function Key
Menu Activate the settings menu; to the next step in
the submenu; conrm value change
-Scroll; modify value; Switching on or o the unit
from operating mode (press for 5 seconds)
+Scroll; modify value
R
One step back in menu; cancel value
modication; lter reset (press for 5 seconds),
delete fault history