aldes H/E280 - Page 10

Residential HRV/ERV
10
Fully Integrated System
Fully Integrated System
The fully integrated system draws stale air from the return ducting of a forced-air heating
and cooling system, and supplies fresh outdoor air back into the return ducting downstream
of the exhaust connection. A minimum separation of 40” (1 m) is recommended between
the direction connections. See section “Interlocking the HRV/ERV to an Air-Handler/Furnace
Blower” on page 18.
A fully integrated system is a very common installation for most climates. It is important to
consider the following:
1. The balance of supply and exhaust airows can change from the AHU turning on and
o or operating at dierent speeds for heating and cooling cycles. It is recommended
that this conguration should be balanced on high speed with the furnace blower on.
2. For best operation, the AHU should be interlocked to run when the HRV/ERV is operating.
This prevents the supply air from short-circuiting to the exhaust air outlet.
3. Motorized dampers may be built into the HRV/ERV to prevent entry of outdoor air
during o cycles. It is not recommended to install separate motorized dampers in the
duct leading to the outside.
*Note: Port congurations
are generic and do not
represent specic models
HVAC AHU
HVAC RETURN DUCT
HVAC SUPPLY DUCT
INDOOR AIR
SUPPLY AIR
OUTDOOR AIR
EXHAUST AIR
6 ft min
40 in. min