Fantech VHR704R Installation Manual - page 8
8
DIRECT CONNECTION of the SUPPLY AIR STREAM to the FURNACE COLD AIR RETURN
(Stale air drawn from key areas of home)
8
INSTALLATION EXAMPLES
Example diagram only-Duct configuration may change depending on model
Fully Dedicated System
(suggested for new construction)
Stale air drawn from key areas of home
(bathroom, kitchen, laundry)
Fresh air supplied to main living areas
Building Codes and Combustion
Appliance Installation Codes do
not allow location of return air
grilles or any opening such as a
“breathing tee” in an enclosed
room with spillage susceptible
combustion appliances.
Partially Dedicated System
Stale air drawn from key areas of home (bathroom)
Fresh air supplied to main living areas via the forced air system.
NOTES:
1. Furnace blower may be required to operate when HRV/ERV is on to provide good air distribution.
2. Weatherhood arrangement is for drawing purposes only.
3. Due to the differences in pressure between the HRV/ERV and the equipment it is being connected to, the HRV/ERV’s airflow should be confirmed on site, using the balancing procedure
found in the installation manual. If a release is required due to the furnace pulling too much air from the HRV/ERV, special care and attention is needed to its design.