INSTALLATION INSTRUCTIONS
EZQ 40/4 B
Version: 2018-01-25 - MAICO VENTILATOREN, www.maico-fans.com - We are not responsible for mistakes or printing errors and retain the
right to make technical modifications without giving prior notice
Page 1
Air extraction from server / compressor / transformer rooms
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The EZQ/EZS or DZQ/DZS wall-mounted fans can be used to extract air and therefore remove high thermal loads from
closed rooms.
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A thermostat (e.g. TH 16) permanently measures the room temperature.
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If the setpoint temperature is exceeded, firstly the exhaust fan (e.g. EZQ/EZS or DZQ/DZS) switches on and secondly the
shutter, e.g. MK opens.
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The fan extracts the warm exhaust air from near the ceiling.
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Cool supply air flows to ground level through the open shutters.
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For optimum operation with minimum flow resistance, the free cross-section area for supply air should be twice that for ex-
haust air.
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A supply air filter (e.g. ZFF) collects particles of dust and dirt from the supply air to protect sensitive electric or electronic
systems in the room from damage.
1
MK, BK shutter
2
ZFF air filter
3
TH 10, TH 16 thermostat
4
Systems with high thermal load
5
EZQ/EZS or DZQ/DZS fan
6
RS external shutter
Air extraction in storage rooms
With cross-ventilation, the supply air flows through the whole room before being extracted again.
In most cases the supply air opening (e.g. MLA or MLZ external grille) should be fitted near the ground. However extract the
exhaust air from near the ceiling using a wall-mounted fan (e.g. EZQ or DZQ).