Mitsubishi Electric s-AIRME-G02 Instructions For Installation, Use And Maintenance Manual page 74

External, supply, return and exhaust air dampers (option mounted in the machine)
If the airflows in the network of air distribution ducts are shut off when the machine is stopped, it is possible to select dampers
on the external air intake, on the air supply line, on the air return line and on the exhaust air line. These are available as optional
accessories. The dampers are installed inside the machine with a servo drive for opening and closing. The control system of the
machine is connected to the servo drives which open and close the dampers according to the control logic.
The individual dampers can be purchased separately.
Supply air inlet damper
Supply air outlet damper
Return air inlet damper
Return air outlet damper
Increased useful static pressure of the fans
If a useful static head higher than the 300 Pa of the standard configuration is required for the air distribution ducts, an oversize
version of both the delivery fan and the return fan can be provided to increase the useful static pressure up to 500 Pa.
3 damper mixing chamber section (additional section option)
If recirculation of a part of the extracted air is required, an additional section with motorised recirculation damper is available as
an accessory.
The recirculation damper can be controlled in different ways:
With CO2 probe, also available as an accessory. If the amount of CO2 in the extracted air exceeds the threshold set on the s-
AIRME-G02/G07 controller, the external air intake damper will open and the recirculation damper will close, while if the CO2
remains below the threshold the recirculation damper will open proportionally to reduce energy consumption.
Start-up with total recirculation. The unit starts up with the external air intake damper closed and the recirculation damper
completely open. When the set conditions are reached, the machine starts working entirely with external air.
CO Sensor
2
The s-AIRME-G02/G07 control system can be integrated with a CO
content in the return air, the s-AIRME-G02/G07 control system operates in the following ways:
•
Air flow modulation on two levels, minimum and maximum: the air flow of the fans is set to the minimum level when
the CO is below the threshold level, and automatically set to the maximum level when the threshold is exceeded.
2
•
Modulation in combination with the recirculation damper accessory: in this case the fans maintain the fixed flow rate
while the recirculation damper is opened and closed as described in the paragraph on the accessory "Recirculation
damper section".
Aphonic septa (additional section option)
A module containing silencers can be applied to the delivery of the unit to reduce the noise generated by the machine.
Installation, use and maintenance manual
MODEL 3000 5000 7500 10000 12500 15000 20000
7
MODEL 3000 5000 7500 10000 12500 15000
Weight (kg) 150
Length (mm) 490
MODEL 3000 5000 7500 10000 12500 15000 20000
Weight (kg) 92 122
Length (mm)
Weight (kg)
9 10 10 18
200 270 340 380
590
sensor. Once a threshold level has been set for the CO
2
143 159 185
750
18 18
420
206 237
2
74