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Economiser (Free cooling) for Roof
Top ACTIVA 045-090
Options and Accessories, Installation manual
Ref.: N-40300_EN 0811
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
Economiser installation............................................................................................................2
General Information.................................................................................................................2
Technical specifications...........................................................................................................2
Installation................................................................................................................................3
Operations..............................................................................................................................10
Wiring diagram.......................................................................................................................12
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1
Economiser (Free cooling) for Roof Top
ACTIVA 045-090
1
1.1
Economiser (Free cooling) for Roof Top ACTIVA 045-090
Economiser installation
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.
2
Economiser (Free cooling) for Roof Top ACTIVA 045-090
Installation
1
1.4
The accessory is formed by:
•
•
•
•
•
•
Damper assembly with actuator motor and connection kit.
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
packaging 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
damper frame -A- onto the lower guide -B- and rest
the upper 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
compartments. 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
separator 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 -Csupplied, 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
actuator motor -A- on the support plate secured by
two screws to the damper frame -B-, as shown in the
diagram.
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
supporting 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
actuator on standby and the outside air damper -Clouvres 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
compartment -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
sensor, 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
return 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
according 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 operating. 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 temperature-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 allows 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 button 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 concentrations
in the air with the setting selected on the sensor. 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 connected
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 minimum 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.
9
1
1.5
Economiser (Free cooling) for Roof Top ACTIVA 045-090
Operations
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
outside 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.
•
•
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.
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.
10
Economiser (Free cooling) for Roof Top ACTIVA 045-090
Operations
1
1.5
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
F11
F3
KM11
ENTALP
J19J20
50%
0%
100%
M
K1
J14
YECO
582
583
X2-R
X2-7
2
SW1
J16
700
3
A4
B16
B15
POWER
J13
1
J15
VO.2
P1
B17
M11
J6 J3
581
580
X2-B
X2-R
J17
EXT. RET.
J18 0-10V C R
CO2
M
8
+
S
7
+
S
X1-386
X1-387
6
X1-387
X1-386
6
X1
L
N
Y1
L
N
Y1
4
5
L
N
Y1
I-2647a
12
Economiser (Free cooling) for Roof Top ACTIVA 045-090
Wiring diagram
1
1.6
Optional
F11
1.
KM11
•
•
•
•
Reg. 2,5 A (017, 022).
Reg. 5,5 A (032, 040).
Reg. 1,4 A (045, 060).
Reg. 3A (0,75, 090).
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
Outside 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.
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