User manual

5
Fresh air
from outdoors
The ERV Constructo 2.0ES unit is equipped with an energy recovery core (enthalpic core) that can
reduce ventilation costs in winter as well as in summer.
1. During heating season, the unit draws humidity and heat from the stale air and transfers them,
in part, to the cold air entering the house, thus avoiding dryness problems and providing
maximum comfort (Example 1).
2. During cooling season, the unit reverses the process, preventing humidity from the outdoor air
from entering the house (Example 2).
EXAMPLE 1 (IN WINTER)
VF0042 VF0043
Fresh air
from outdoors
Stale air
from building
Stale air
to outdoors
18°C/64°F
22°C/72°F
EXAMPLE 2
(IN SUMMER WITH AIR CONDITIONING)
1.3.2 E
NERGY RECOVERY CORE
Fresh air
to building
Stale air
to outdoors
Stale air
from building
Fresh air
to building
4°C/40°F
0°C/32°F
27°C/80°F
25°C/77°F
30°C/86°F
32°C/90°F
1. YOUR UNIT AND ITS PURPOSE (CONT’D)
Units with a heat recovery core (HRV Constructo 1.5ES and HRV Constructo 2.0ES units) are
designed specifically to control excess humidity and reduce ventilation costs by recovering the
heat energy from the exhausted air, and using that same heat energy to warm the fresh air being
supplied. This heat recovery process is accomplished in such a way that the stale air is never mixed
with the fresh air.
1.3 RECOVERY
EXAMPLE (IN WINTER)
VF0026
OUTDOORS
INDOOR
Stale air to outdoors
6°C/42°F
Fresh air from outdoors
0°C/32°F
Fresh air to building
16°C/61°F
Stale air from building
22°C/72°F
1.3.1 HEAT RECOVERY CORE