Carrier 30PA, Инструкции по установке, эксплуатации и обслуживанию, Страница: 21 / 36

Ductable air-cooled scroll
chillers and heat pumps
21
10. O
PTIONS
Servomotor Damper
Condensation pressure control
In units with the STD version that work in cooling with an outdoor
temperature lower than 12ºC, the condensation pressure control
allowing an “all seasons” operation (up to -15ºC) is mandatory.
In units with centrifugal fan a check is performed per motorized
damper in the fan supply. A servomotor opens or closes the damper
depending on the proportional signal 0-10V received from the
electronic control system (during the operation of the fan).
M01 assembly:
VERTICAL air supply
M00 assembly:
HORIZONTAL air supply
Servomotor
Damper Frame
The motorized damper is mounted on the air supply panel of the
machine. This in order to allow the operation test in the factory, with
all the necesary presetting during the test of the unit at the end of the
production line.
However, in accordance with the code of practice as regards aeraulic
installation, we recommend a remote installation of the damper, at a
distance approximately equal to 3xDe (equivalent diamenter) of the
supply air duct diameter.
This stipulation is the only one allowing a best operation of the motorized
damper with a homogeneous
fl
ow of the air.
In order to remove the damper it is necessary to unscrew from the unit
and disconnect the electrical suply of the servomotor.
In case of asking together for
fl
exible connections and damper for
condensation pressure control (optional for version STD), supply
fl
exible
duct is attached to the above mentioned damper. If it is removed the
damper for installation on duct, it is necessary to maintain the frame
for reconnecting the
fl
exible connections. Without
fl
exible connections
this frame may be removed.
30PA/PH/PAC/PHC Assembly
No. of
dampers
Servos per
damper
Damper
width
90STD to 180STD
M00
1 1 150
M01 1 1 150 (*)
(*) The damper incorporates a frame (60 mm width) to
fi
t the damper
to the fan supply.
Air fi lter
These units can include a frame with gravimetric
fi
lters in the air return
to the unit. The frame is assembled on a pro
fi
le made of moveable steel
metal which can be removed.
The
fi
lters frame is removable, and upon request, it is possible to
supply the frame independently with the 30PA/PH/PAC/PHC unit, to
be joined on site.
The frame dimensions can be referred to in the technical brochure for
these units (No. 10056).
Filters are moved by
lifting the tab and dragging
Frame width = 53 mm