SystemAir AJ8 Series, Installation And Operating Instructions Manual, Page: 27 / 60

2.5 Motor Specifications
Please refer to the operating instructions supplied by the motor manufacturer.
2.6 Electrical Connections
Please refer to the data sheet.
3 Intended Use
Notice!
The model AJ8 and AJR jet fans are intended for installation in underground and above-ground parking structures,
to facilitate ventilation and smoke extraction (B) (F).
For optimum operation, the jet fan must be suspended horizontally from the ceiling in such a position that intake and outlet
are unobstructed.
Optional deflectors for control of forced air are available as accessories. These can be used to deflect the flow of air around
potential obstructions, such as beams.
The jet fan must not be installed in hazardous areas (areas with a potentially explosive atmosphere). The fan is not suitable
for intake of media containing dust, aggressive media or media with a dust content so high that dust deposits on the im-
peller or fan housing can affect the operation of the fan.
The operating characteristics listed on the nameplate apply for an air density of p=1.2 kg/m³ and a maximum humidity of
80%. The fans are suitable for use in an ambient operating temperature range of up to 55 °C (please note data on name-
plate).
The temperature of the air transported through the fan must not be above 55 °C/131 °F nor below –20 °C/ –4 °F.
For the temperature resistance of the smoke extracting fans, which can also be used to extract CO, please refer to the
nameplate (e.g., 300 °C/120 min).
The standard motors in these jet fans are suitable for operation with frequency converters. If a fan is controlled using a fre -
quency converter, thermic protection must be provided by a PTC resistor in the motor. You can see in the Systemair Online
cataloque if a fan is equipped with a PTC or not. For smoke extraction, the motor-circuit switch must be bypassed (to be
carried out on site).
Caution!
Any use of the jet fan that deviates from the above descriptions constitutes use for other than the intended pur -
pose. No liability can be accepted for personal injury or property damage resulting from such use.
Model IV
E
B C A
H
F
I
D
6x ⌀K
Size A B C D E F H I 6x ⌀ K
IV 50 790 834 870 1248 285 370 185 210 13,5
IV 85 1140 1184 1220 1900 340 420 210 230 13,5
All dim. in mm.
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