Economiser; Electric Heat - SystemAir ROOFTAIR Serie Manual De Instalación Y De Mantenimiento

ECONOMISER

The economiser is a set of two dampers driven by one actuator. The quantity
of outdoor air introduced into the building varies according to the room set
point and provides energy savings in both modes. Economiser is used to
modulate the return and outdoor air volumes. It also provides an antifreeze
protection during OFF period by closing the outdoor air dampers
T H E E C O N O M I S E R
C O M P A T I B L E W I T H T H E R E T U R N A I R
F R O M T H E R E A R ( R 3 ) C O N F I G U R AT I O N.
1. Filter
2. Indoor coil
3. Heating coil
4. Main blower
5. Condenser fan

ELECTRIC HEAT

Safety devices (thermostats and pressostats) protect the machine from possible risks of overheating due to insufficient
flow around the shielded elements.
The electric coil is located directly at the blower outlet. It is only available for the downward discharge version (S1)
or front discharge (S3). Air deflector are supplied to guide the stream around the heating elements.
O P T I O N I S N O T
6. Outdoor coil
7. Compressor with reversal cycle valve
8. Return air dampers
9. Outdoor air dampers
12
A. Supply air
B. Return air
C. Outdoor air
D. Outdoor air to outdoor coil