Economizer
Economiser (Free cooling) for Roof
Top ACTIVA 045-090
Options and Accessories, Installation manual
Ref.: N-40300 0809
Index
Index
1
Economiser (Free cooling) for Roof Top ACTIVA 045-090 .................................................... 1
1.1
1.2
1.3
1.4
1.5
1.6
1.7
Economiser installation.......................................................................................................... 2
General Information............................................................................................................... 2
Technical specifications......................................................................................................... 2
Installation.............................................................................................................................. 3
Operations............................................................................................................................ 11
Wiring diagram..................................................................................................................... 12
EC Declaration of Conformity............................................................................................... 14
i
Index
ii
1
Economiser (Free cooling) for Roof Top
ACTIVA 045-090
Economiser (Free cooling) for Roof Top ACTIVA 045-090
Economiser installation
1
1.1
1.1 Economiser installation
1.
Lower guide
11.
Left protection panel
2.
Front shutter
12.
Central protection panel
3.
Return Air (RA) damper
13.
Upper protection panel
4.
Return air/outside air separator
14.
Aluminium mesh filters
5.
Outside air (OA) damper with actuator
15.
Electronics and hardware package
6.
Side shutter
16.
Bag of nuts and bolts
7.
Actuator
17.
Silicone container
8.
Mounting counterweight
18.
Rubber sealing strips
9.
Right protection panel
A.
Rain protection assembly
10. Lower filter support
1.2 General Information
These instructions provide the necessary information for correct on-site installation of the economiser
dampers and the rain protection assembly.
The economiser is located on the inside of the unit's return section.
1.3 Technical specifications
This accessory includes the return and outdoor air dampers, the actuator motor with modulating return
spring for temperature control (enthalpy sensor optional) and rain protection for the outdoor air intake.
The accessory is formed by:
•
2
Damper assembly with actuator motor and connection kit.
Economiser (Free cooling) for Roof Top ACTIVA 045-090
Installation
•
•
•
•
•
1
1.4
Temperature sensors for return and outdoor air.
Control board, plastic separators and protective cover.
Cable assembly prepared to connect the unit wiring.
Return/outdoor air zone separator panel (with heat insulation).
Rain protection assembly, including aluminium mesh filters supplied separately in their own packag‐
ing box together with specific instructions for their on-site installation.
1.4 Installation
CAUTION
Make sure the filters and the coils inside the adjoining
compartment are not damaged when installing the
dampers.
Disconnect the power supply to the unit using the
main switch -Q3- (See Installation Manual).
Remove the return air (RA) panel-A-, the outside air
(OA) panels -B- and the filter access panel -C-.
To remove panels not fitted with 1/4 turn snaplocks,
remove the screws -A- from the bottom of each panel
using an 8 mm hexagonal socket screwdriver.
NOTE
Keep the O-rings that provide the seal between the
panel and the bottom of the unit.
DANGER
If the lower return air duct cover has been removed,
cover the opening to avoid personal accidents or
damage to the unit.
Fit the lower guide. To do so, remove the screws -Aconnecting the outside base -B- and the coil side base
-C-. Save the screws for subsequent refitting.
3
1
1.4
Economiser (Free cooling) for Roof Top ACTIVA 045-090
Installation
Fit the lower guide -A- so that the holes in the bottom
for the screws -B- are facing those in the outside base
-C- and the coil side base -D-.
Use the previously removed screws to secure the
lower guide to the tab on the base.
Unpack the RA (Return air) damper and upper front
shutter.
Fit the front shutter -A-. To do so, fit the 25 x 3 rubber
strip -B- supplied to the inside of the post -C-.
Inside the unit, line up the holes on the front shutter D- with the holes on the upper rail -E-.
Use the self-threading screws -F- supplied from the
outside of the unit.
Fit the return air damper. To do so, fit the lower damp‐
er frame -A- onto the lower guide -B- and rest the up‐
per frame on the front shutter -C-.
4
Economiser (Free cooling) for Roof Top ACTIVA 045-090
Installation
1
1.4
Slide the damper -A- towards the inside of the unit
until it touches the supply compartment wall -B-.
Fit the return air (RA)/ outside air (OA). separating
panel. To do so, use an 8 mm hexagonal socket
screwdriver to loosen the 2 screws -A- on the tab on
the base between the return air and outside air com‐
partments. Save the screws for subsequent refitting.
Slide the separator -A- to its correct position (flush
against the return air damper).
Use the previously removed screws to secure the
separator to the tab on the base.
Use three self-threading screws to secure the sepa‐
rator to the inside of the vertical post -B-.
Secure the return air damper -A-. To do so, secure the
damper to the front shutter -B- using the three selftapping screws -C- supplied.
NOTE
The damper does not have to be secured to the lower
guide.
5
1
1.4
Economiser (Free cooling) for Roof Top ACTIVA 045-090
Installation
Fit the damper mounting counterweight. To do so, fit
the counterweight -A-, which includes three riveted
nuts, in position as shown in the diagram.
Ensure the riveted nuts coincide with the holes in the
separator panel tab -B- and fit the M6 screws -C- sup‐
plied, without tightening.
NOTE
The counterweight -A- must be loose enough for the
subsequent fitting of the outside air damper -D-.
Fit the outside air damper. To do so, place the actua‐
tor motor -A- on the support plate secured by two
screws to the damper frame -B-, as shown in the di‐
agram.
Fully close the louvres and adjust by hand to their
opening start point. At this point, secure the actuator
motor to the damper shaft and to the frame using its
support plate.
Place the damper assembly inside the outside air
zone with the actuator motor -A- at the top.
Fit the lower damper frame onto the lower guide and
rest the upper frame on the front shutter -C-.
Slide towards the inside of the unit until the side frame
fits between the mounting counterweight and the sup‐
porting side of the separator panel -D-.
6
Economiser (Free cooling) for Roof Top ACTIVA 045-090
Installation
A.
Mounting counterweight.
B.
Separator panel.
C.
M6 screws.
D.
Return air damper.
E.
Outside air damper.
1
1.4
Secure the damper -A- to the upper shutter -B- using
the two self-tapping screws supplied -C-.
NOTE
The damper does not have to be secured to the lower
guide.
Fit the return/outside drive connection. With the ac‐
tuator on standby and the outside air damper -C- lou‐
vres closed, fully open the louvres on the return air
damper -B-.
In this position, fit the rods and ball joints to the end
of the shaft on both dampers and secure using the
existing stud.
Finally fit the connecting rod -A- between both ball
joints and firmly secure in position to make sure the
louvres work properly.
Fit the side shutter. Before installation, fit a continuous
rubber strip measuring 24 x 24 mm -A- along each
side of the tabs.
1.
Models 045/090.
2.
Models 075/090.
7
1
1.4
Economiser (Free cooling) for Roof Top ACTIVA 045-090
Installation
Fit a continuous rubber strip measuring 25 x 3 -A- on
the contact area on the front shutter -B- and the lower
guide -C-.
Place the side shutter -D- inside the outside air com‐
partment -E-, covering the space between the outside
air damper and the side of the unit. Secure it using the
self-threading screws supplied.
Install the bushing -G-.
NOTE
The diagram shows a view from the inside of the unit.
Fit the A4 economiser control board -F- to the front
shutter at the top of the motor using the four plastic
separators supplied.
Connect the economiser cable wires as indicated in
the wiring diagram Wiring diagram , see on page
12 .
• Power cables (J17, 580 and 581),
• accessory communication cable (J16, 700),
• motor cables (R: red, C: black, 0-10 V: grey),
• return sensor (J13: black),
• outside sensor (J3: White).
Fit the return and outside air temperature sensor.
Pass the return and outside air temperature sensor A- through the plastic bushing and fit the supports B- for the sensors to the return/outside air separator
panel -C-, one on each side of its corresponding sen‐
sor, using the screws -E- and flanges -D-.
Installation of the enthalpy sensors, Ref. C7400A
(Optional).
The enthalpy sensors are an optional accessory.
Fit one enthalpy sensor in the holes made on the re‐
turn side and another on the outside air side using the
screws supplied.
Pass the red and white wires from the economiser
control board to the sensors and connect them ac‐
cording to the wiring diagram.
8
A.
Return temperature sensor.
B.
Outside temperature sensor.
C.
Enthalpy sensor OA optional.
D.
Enthalpy sensor RA optional.
E.
Support.
Economiser (Free cooling) for Roof Top ACTIVA 045-090
Installation
1
1.4
Fit the ENTALP bridge to control board A4.
Disconnect outside sensor B17 (connector J3) and
keep return sensor B15 connected (connector J13).
NOTE
The enthalpy sensors must be placed so that their
terminals (T: red wire) and (S: white wire) are on the
right and the two small sensor deflectors are at the
top.
Bridge position selection:
• Bridge J19, open by default: economiser operat‐
ing. if closed, motorised damper operating.
• Bridge J20, open by default: outside damper
closed with high temperature-smoke alarm. If
closed, outside damper open with high tempera‐
ture-smoke alarm.
• ENTALP bridge S2, open by default: operating
with enthalpy sensor.
Configuration of the economiser control board and
minimum opening adjustment.
Once the accessory has been fitted together with the
necessary parts, connect the power supply for the unit
through main switch Q3 (See Installation Manual).
Check that the green LED (V1) on the economiser
control board (A4) remains lit.
To search for and configure accessories, press the
test button on the YKN2 Open board (A1) for more
than three seconds until the red LED lights up. When
the search and configuration process starts, the red
LED on the board will light up and will remain on until
the operation is completed. Once switched off, check
that the green LED (V1) on the economiser control
board is flashing to indicate that the accessory has
been configured.
The potentiometer P1 on the economiser board al‐
lows for the damper to be modulated by hand to check
its correct working order. The damper will return to its
operating position after 30 sec.
Whenever the inside fan is activated, the damper will
be open by a certain percentage to renew the air in
the room. The factory-set default value is 10%. This
minimum percentage can be set using potentiometer
P1 or via the communications network. To set it using
the potentiometer, set it until the minimum opening
required is obtained and then press configuration but‐
ton SW1 for 3 seconds to save the value.
Air quality sensor (optional).
The air quality sensor has a VOC (volatile organic
compounds) sensor that compares their concentra‐
tions in the air with the setting selected on the sensor.
9
1
1.4
Economiser (Free cooling) for Roof Top ACTIVA 045-090
Installation
Where the value is higher than the setting, the sensor
triggers output Y1 using a relay.
The 230 V AC output signal between Y1 and N is
connected to the 230 VAC to 5 VDC conversion
board. This board is fitted alongside the economiser
control board. The 5 V DC signal cable must be con‐
nected when connecting J18 on the economiser
board.
Where the thermostat setting temperature of the room
is met and there is an air quality request signal, the
damper is opened to the programmed renewal mini‐
mum and the inside fan starts up. The damper then
opens further, bearing in mind the maximum (30 °C)
and minimum (12 °C) supply temperatures.
In the following cases:
• Disappearance of the air quality request signal,
• the thermostat makes an air quality request,
• the thermostat makes a cold or heat request
The damper returns to the renewal minimum. Where
there is no request from the thermostat and the inside
fan is in automatic mode, the fan will stop and the
dampers will close.
A.
Connection terminals.
B.
Air quality level selection.
C.
VOC sensor.
Three air quality levels can be selected on the sensor
according to the bridge positions:
0: Normal, default position.
-:
Acceptable.
+: Very good.
Exhaust fan (optional).
The function of the return exhaust fan is to increase
the air extraction capacity of the room. When the out‐
side air damper is open more than 30%, the output of
relay K1 on the economiser control board, connector
J14, cables 582 and 583, is activated.
See the wiring diagram for details on connections and
motor trip switch adjustment.
•
•
10
DANGER
Loose connection terminals produce overheating
of cables and terminals.
The unit is working incorrectly and there is a risk
of fire. Check that the cables are firmly secured to
their connection terminals.
Economiser (Free cooling) for Roof Top ACTIVA 045-090
Operations
1
1.5
Rain protection installation.
The rain protection must be fitted on the outside air
intake when the economiser accessory is fitted.
Consult the instructions included in the rain protection
packaging.
1.5 Operations
Allows for cold to be generated by modulating the outdoor air inlet damper.
Where conditions are favourable, the yellow V2 LED will be lit up and the damper will be modulated to
ensure the supply temperature is 12 °C.
Favourable conditions.
• Temperature mode. Favourable conditions in temperature mode are when the outside temperature
is below 20 °C and, in turn, below the return temperature.
• Enthalpy mode. Favourable conditions in enthalpy mode are when the outside enthalpy is 5% below
the return enthalpy and the outside temperature is below 20 °C. The sensors must be connected and
a bridge fitted to S2 for the unit to run in enthalpy mode. Incident 4, 1, 5 is indicated if the enthalpy
sensors are faulty.
The yellow LED on the board will be switched off when conditions are not favourable. Whenever the
inside fan is activated, the outside damper will be open by a certain percentage to renew the air in the
room (10% by default, adjustable value).
In the winter cycle, if the thermostat requests heat and no heat stage can be enabled, e.g. due to a fault,
the damper will remain closed with the inside fan activated.
Where a fault is detected on the inside fan by YKN2 Open , the outside air damper is fully closed.
11
1
1.6
Economiser (Free cooling) for Roof Top ACTIVA 045-090
Wiring diagram
1.6 Wiring diagram
12
Economiser (Free cooling) for Roof Top ACTIVA 045-090
Wiring diagram
1
1.6
Optional
F11
1.
KM11
•
•
•
Reg. 1 A (090, 120, 150).
Reg. 1.4 A (180, 240, 300).
Reg. 1.4 A (180, 240, 300).
A1 to X2-7 (Cable 583)
A2 to X2-B
M11
Exhaust fan
X2-R
24 VAC Phase-R switching
X2-7
To A1 from KM11
2.
Accessories
3.
Accessories
Air quality sensor, optional, fitted on return (inside machine)
4.
L
Black
N
Blue
Y1
Brown
Air quality sensor, optional, fitted on ambient (machine exterior)
5.
L
Black
N
Blue
Y1
Brown
Yellow-Green
6.
Air quality board (green)
Enthalpy sensor C7400A return, optional
7.
+
Red
S
White
Enthalpy sensor C7400A outside, optional
8.
+
Red
S
White
B15
Return sensor (black)
B16
Discharge sensor, optional depending on model (yellow)
B17
Inside sensor (white)
Damper
M10
X1
0-10 V
Grey
C
Black
R
Red
Cables to be installed on site (not supplied)
Data and measurements subject to changes without prior notice.
13
1
1.7
Economiser (Free cooling) for Roof Top ACTIVA 045-090
EC Declaration of Conformity
1.7 EC Declaration of Conformity
14
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