Energy Plus
41
CO
2
SENSOR
(accessory
to be installed by the Customer)
The control board of the Energy Plus units is
designed to receive a 0-10 V signal from a CO
2
sensor. The characteristics of the sensor that can
be connected are:
- Recommended operating range: 0-2000 ppm
- Signal output: 0-10 V
The Customer shall set up the sensor power supply
according to the specifications of the selected
product. It is usually a power supply with these
specifications:
- 24 V AC
- 15-35 V DC.
CONDENSATE DRAIN
SIPHON
The unit has a condensate drain at the bottom
to which must be fixed a siphon which can ensure
the efficient draining of water during normal
operation.
The siphon must always meet the following
specifications and the discharge pipe
have to be at a minimum gradient
of 3°.
The siphon is essential for correct operation
of the energy recovery unit as it prevents the
infiltration of air and yet ensures the natural
flow of the condensate. The siphon must be filled
with water and sized according to the function to
prevent that the air in the discharge system will
be drawn by the heat recovery unit and doing so
obstructs the proper drainage of the condensate.
The system must be pressurised as follows:
H1 = 2P
H2 = H1 /2
Where P = max operating pressure of the heat
recovery unit in mm, approx
(1 mm approx = 9,81 Pa).
Extracted air
Exhausted air
Condensate drain
fitting 1/2" M
