Installation manual

The Three Methods of Installation
The three methods of installation for the ERV system are:
• The Simplified installation.
• The Partially Dedicated Installation
• The Fully Dedicated Installation
Simplified Installations
The Simplified Installation draws stale air from the cold air
return duct of the air handler/furnace and introduces an
equal amount of fresh air farther downstream into the cold
air return. Refer to "Simplified Installation Diagrams".
The air handler/furnace blower must be running when the
unit is operating for this system to be effective. Refer to
"Interlocking the ERV to an Air handler/Furnace Blower".
Partially Dedicated Installations
The Partially Dedicated Installation draws stale air from
specific points in the house and introduces an equal amount
of fresh air into the cold air return. Refer to "Partially
Dedicated Installation Diagrams".
Stale air ducts should be installed in areas of the home
where the poorest indoor air quality exists (bathrooms and
kitchen). Each location with a stale air duct should have a
timer to initiate high speed ventilation. Refer to "Optional
Timers" in this manual.
The air handler/furnace blower should be running when the
ERV is operating to evenly distribute the fresh air
throughout the house. Refer to "Interlocking the ERV to an
Air handler/Furnace Blower".
Fully Dedicated Installations
The Fully Dedicated Installation draws stale air from specific
points in the house and delivers fresh air to specific locations
of the house. This system is not connected to an air
handler/furnace. Refer to "The Fully Dedicated Installation
Diagrams" in this manual.
Stale air ducts should be installed in areas of the home
where the poorest indoor air quality exists (bathrooms and
kitchen). Each location with a stale air duct should have a
timer which will initiate high speed ventilation. Refer to
"Optional Timers" in this manual.
Fresh air ducts should be installed to all bedrooms and living
areas, excluding bathrooms, kitchen and utility areas. Grilles
should be located high on a wall or in ceiling locations.
Grilles that diffuse the air comfortably are recommended.
Refer to "Grilles" in this manual.
Installing the Ducting Between the ERV and Living
Areas in the House
A well designed and installed ducting system will allow the
ERV to operate at its maximum efficiency.
All ducts should be kept short and have as few bends or
elbows as possible to maximize airflow. Forty-five degree
elbows are preferred to 90° elbows. Use "Y" tees instead of
straight tees whenever possible.
All duct joints must be fastened with screws, rivets or duct
sealant and wrapped with mastic or quality duct tape to
prevent leakage. Mastic is preferred but if duct tape is used,
we recommend aluminum foil duct tape.
Galvanized (rigid) ducting from the ERV to the living areas in
the house is recommended whenever possible although
flexible duct can be used in moderation if necessary.
A short length (approximately 12 inches or 300mm) of non-
metallic flexible insulated duct should be connected between
the ERV and the supply/exhaust duct system to avoid
possible noise transfer through the duct system.
All ducts running through attics and unheated spaces must
be sealed and insulated to code.
Installation Methods
ATTENTION
Applications such as greenhouses, atriums,
swimming pools, saunas, etc. have unique
ventilation requirements which should be
addressed with an isolated ventilation system.
WARNING
Include a short length of fabric flex duct or other
non-metallic connector in this hard ducted line in
order to keep the ERV separately grounded
(electrically) from the air handler.
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