EXHAUST & OUTSIDE AIR DUCTS
Energy Recovery Ventilators
MODEL
OD
-ERV 150AC
Instruction Manual
1-888-543-6473
1-888-541-6474
13376 Comber Way
Surrey BC V3W 5V9
info@ortechindustries.com
www.ortechindustries.com
375 Admiral Blvd
Missis
s
auga
,
ON L5T 2N1
The exhaust air (EA) duct and the outside air (OA) duct connect the unit to the outside.
Flexible insulated duct is usually used.
WARNING
!
DO NOT PLACE ANY STALE AIR RETURNS IN GARAGES
.
Installing Outside Air
(OA)
& Exhaust Air
(EA)
Ducts
Ducts connecting the unit to the outside MUST be well-insulated. Vapour barrier is required on both inside
and outside of the insulation. The inlets and outlets should be screened against insects and vermin and
shielded from the weather to prevent the entry of rain or snow.
CAUTION
!
1. The vapour barrier should be continuous and sealed against air and moisture leakage.
If not, condensation or ice may form in cold weather on the duct surface or in its insulation.
2. INSTALL FRESH AIR INLET AWAY FROM SOURCES OF CONTAMINANTS
- DO NOT locate the fresh air inlet where vehicles may be serviced or left idle
- The fresh air inlet should be at least 10 feet away from any exhaust such as dryer vents, chimneys, furnace, and water
-
heater exhausts or other sources of contamination or carbon monoxide
- NEVER locate the fresh air inlet inside a structure
Installing
Return Air (RA) Ducts
All the stale air returns are connected by ducts to the unit. Generally, empty stud cavities are used for returns as is often done with cold air
returns for the furnace, using standard duct boots to connect to six inch pipe at the bottom or top of the wall cavity. Always be sure to seal all
joints with duct sealant or tape. Some local codes may require metal ducting all the way from the boots to the stale air grilles. Rigid ducts will
allow the air to move freely and easily through the ducts.
DO NOT use more flex duct than necessary:
Flex duct is much more resistant to airflow than rigid duct. Longer runs of flex duct will reduce the ventilation performance of your system.
Stretch flex duct and avoid sharp bends.
CAUTION
!
•
DO NOT connect dryers directly to the unit
•
DO NOT connect range hoods to the unit
•
SEAL ALL DUCT COLLARS AT UNIT TO MINIMIZE AIR LEAKAGE
WARNING
!
D
ANGER OF ELECTRIC SHOCK WHEN
SERVICING THE UNIT: ALWAYS unplug unit
before connecting or servicing controls.
ELECTRICAL CONNECTIONS
WARNING
!
UNPLUG THE LINE CORD BEFORE WORKING ON UNIT.
Run 120V AC house wiring to the location of the fan.
The unit comes with a grounded 3 prong power cord for
connection to an electrical outlet.
