2. FORMULAS AND RECOMMENDATIONS FOR INSTALLATION
2.1. Calculation of opening / closure force
Using the formulas on this page, approximate calculations can be made for the force
required to open or close the window considering all the factors that determine the
calculation.
Symbols used for the calculation
F (Kg) = Force for opening or closing
C (cm) = Opening stroke (actuator stroke)
For horizontal light domes or skylights
F = 0,54 x P
(Eventual weight of snow or wind on the
cupola should be calculated separately)
The chart below shows the force executed from the actuator i
type of mounting.
5
FORMULAS AND RECOMMENDATIONS FOR INSTALLATION
Calculation of opening / closure force
Using the formulas on this page, approximate calculations can be made for the force
required to open or close the window considering all the factors that determine the
Symbols used for the calculation
F (Kg) = Force for opening or closing
P (Kg) =
Weight of the window (mobile sash only)
C (cm) = Opening stroke (actuator stroke)
H (cm) = Height of the mobile sash
For horizontal light domes or skylights
(Eventual weight of snow or wind on the
calculated separately)
.
For vertical windows
TOP HUNG WINDOWS
,
OUTWARD OPENING
BOTTOM HUNG WINDOWS
F = 0,54 x P x C : H
(Eventual load of favourable or unfavourable
wind on the sash should be calculated
separately.)
force executed from the actuator in function of the stroke and
FORMULAS AND RECOMMENDATIONS FOR INSTALLATION
Using the formulas on this page, approximate calculations can be made for the force
required to open or close the window considering all the factors that determine the
Weight of the window (mobile sash only)
H (cm) = Height of the mobile sash
For vertical windows
OUTWARD OPENING
(A)
BOTTOM HUNG WINDOWS
(B)
F = 0,54 x P x C : H
(Eventual load of favourable or unfavourable
wind on the sash should be calculated
ction of the stroke and
6
2.2. Maximum opening according to height of sash
The actuator can be recessed mounted in the frame as well as outside on the frame or on the
sash. In any case the actuator stroke is in accordance with the height of the sash and its
application. Check that, during stroke, the actuator chain does not touch the profile of the sash
and that there are no obstacles for the opening or it does not exert force on the window frame.
A
TTENTION
. For safety reasons the actuator should not be assembled if dimensions are
inferior to those indicated in the table below. In the event that the height of the sash should
be lower, call on the manufacturer to check the appliance.
Mode of installation
Selection of actuator stroke
300
600
800
1000
Light domes, skylights or vertical top hung windows opening
outwards with frontal assembly
350
650
900
-
Top hung windows opening outwards with horizontal assembly
350
650
900
-
Bottom hung windows
(motor on frame)
400
800
1200
1350
Bottom hung windows
(motor on sash)
Consult manufacturer
3. USE OF ACTUATOR IN SYNCRO³ VERSION
In the
SYNCRO
³ version the actuator has been equipped with the new system patented by
NEKOS for coordinated synchronisation of a group of actuators (up to eight at the same
time). Electronic control of speed is completely automatic device inside the actuator and
does not require any external control station: just connect the feeder cable communication
wires to each other
(see diagram on page 15-16)
and carry out reset procedure.
3.1. Recognition
Three elements differentiate the SYNCRO
3
version of the actuator from other actuators in
the INKA 356 series:
The technical data label with the “..…
SYNCRO
3
” label.
The SYNCRO label to one side of the technical data label on the
actuator.
Only for 110-230V~ version, the electrical cable with 5 wires
(3+2)
.
3.2. Use of a Syncro³-version actuator
The Syncro³ version of the actuator is used when the window is particularly heavy or wide
(more than approximately 1.2 m wide)
and a single actuator doesn't allow complete
closure of the window, especially in the corners, therefore making it necessary to have
two or more retention points.
When a group of Syncro³ actuators is used, the movement of the window sashes occurs
in a synchronized manner, i.e., uniformly without interruptions and/or variations in the
speeds of the actuators. If one of the actuators stops, due to mechanical obstruction or
an electronic problem, the other actuators stop as well, thereby guaranteeing the integrity
of the window.
Recall that the force exerted by a group of actuators installed on the same window sash
is equivalent to the sum of the forces exerted by each actuator; so assembling two
actuators doubles the force exerted on the window.
IMPORTANT: when calculating the dimensions of a system with multiple Syncro³
actuators, it is advisable to consider the force of each actuator as 90% of that
stated on the plate.
