ovER vIEW
WH45P
7
/42
rev 20-10
1.9.
Mechanism type
Mechanism type selection must be done according to na-
tional legislation and according to building type where fire
damper will be installed. In particular it must be considered
if fire protection or smoke detection system need specific
control over the fire damper or if periodic controls (such as
opening and closing) are required.
1.9.1.
Manual / Manual with magnet
1.
Manual opening lever
2.
Protection box
3.
Lever position when the blade is open
4.
Lever position when the blade is closed
5.
Magnet knob (for magnetic version)
6.
Closed blade indicator
7.
Open blade indicator
8.
Manual closing button
Blade closing mode
Automatic closing with thermal fuse.
The control mechanism has a thermosensitive element
that automatically closes the blade when the temperature
in the duct exceeds 70°C (or 95°C for the fire damper with
95°C thermal fuse).
It is possible to close the damper by pressing the indicated
button.
If the manual mechanism is equipped with electromagnet
it is possible to remotely close the fire damper.
The manual command mechanism with magnet is equip-
ped with an electromagnet which, in case power is inter-
rupted (interuption magnet version) or when power is sup-
plied (input magnet version), comands the closing of the
damper.
Blade opening mode
Make sure that the damper is open before the ventilation
system start-up, otherwise there is a risk of product mal-
function.
In case of closed damper by pressing the closing button or
remotely by electromagnet (magnetic version), it is possi-
ble to manually open the fire damper blade by rotating the
lever antyclockwise.
For power supply interruption electromagnet, provide
power supply and pull the magnet knob before opening
the fire damper.
In case of closed damper as a result of the action of the
thermosensitive element, it is possible to manually reopen
the damper by rotating the lever counterclockwise once
the element has been replaced.
Position indication microswitches
on request, the fire damper can be supplied with posi-
tion microswitches (SA/SC/S2 optional) that signal the
blade position (open or closed). Refer to Electrical con-
nections p. 26 paragraph for more details.
Closing by remote control
With power supply input or interruption magnet (WH45PM
version only).
Temperature calibration of thermosensitive element for
automatic damper closing
70 °C±7 °C (Standard)
95 °C±9 °C (on request).
1.9.2.
Belimo motorized version
1.
Manual closing switch
2.
Manual opening lever
3.
Position indicator
4.
Blade locking lever
Blade closing mode
Automatic closing with thermal fuse.
The control mechanism has a thermosensitive element
that automatically closes the blade when the temperature
in the duct or in the room exceeds 72°C (or 95°C for the
95°C version).
To close the damper when the motor is connected, press
the switch on the temperature sensor or cut off the power
supply.
Blade opening mode
Make sure that the damper is open before the ventilation
system start-up, otherwise there is a risk of product mal-
function.
To open the damper with the electric motor driven actua-
tor, provide power supply to the motor. Refer to the section
Electrical connections p. 26 for further information.
To manually open the damper, use the handle supplied
and carefully rotate clockwise to the 90° indicator. To hold
the damper in open position operate on the lever indica-
ted in figure.
WH45P
7
We reserve the right to make changes without prior notice