
6/16//2014
7058-205A
13
HEATILATOR ECO-CHOICE
C. Negative Pressure
Negative pressure results from the imbalance of air avail-
able for the appliance to operate properly. It can be strongest
in lower levels of the house.
Causes include:
• Exhaust fans (kitchen, bath, etc.)
• Range
hoods
• Combustion air requirements for furnaces, water heaters
and other combustion appliances
• Clothes
dryers
• Location of return-air vents to furnace or air conditioning
• Imbalances of the HVAC air handling system
• Upper level air leaks such as:
-
Recessed
lighting
-
Attic
hatch
-
Duct
leaks
To minimize the effects of negative air pressure:
• Install the outside air kit with the intake facing prevailing
winds during the heating season
•
Ensure adequate outdoor air for all combustion appliances
and exhaust equipment
• Ensure furnace and air conditioning return vents are not
located in the immediate vicinity of the appliance
• Avoid installing the appliance near doors, walkways or
small isolated spaces
• Recessed lighting should be a “sealed can” design
• Attic hatches weather stripped or sealed
•
Attic mounted duct work and air handler joints and seams
taped or sealed
Minimum Vacuum Requirements per Unit
MODEL
Minimum Vacuum
Requirements
ECO-ADV-PS35
.065 inches W.C.
ECO-ADV-PS50
.075 inches W.C.
ECO-CAB50
.075 inches W.C.
D. Draft
Draft is the pressure difference needed to vent an appli-
ance successfully. When an appliance is drafting suc-
cessfully, all combustion byproducts are exiting the home
through the chimney.
Install through the warm airspace enclosed by the build-
ing envelope. This helps to produce more draft, especially
during lighting and die-down of the fi re.
Considerations for successful draft include:
• Preventing negative pressure
• Location of appliance and chimney
WARNING
Risk of Asphyxiation!
Negative pressure can cause spillage of combustion fumes
and soot.
E. Chimney and Exhaust Connection
1.
Chimney & Connector
: Use 3 or 4 inch (76-102mm) diameter
type “L” or “PL” venting system. It can be vented vertically or
horizontally.
2.
Mobile Home:
Approved for all Listed pellet vent. If using the
3 inch (76mm) vertical Top Vent Adapter Kit or the 3 to 6 inch
(76-152mm) Top Vent Offset Adapter, use Listed double wall
fl ue connector. A Quadra-Fire Outside Air Kit must be used with
manufactured home installations.
3.
Residential:
The 3 inch (76mm) vertical Top Vent Adapter Kit and
the 3 to 6 inch (76-152mm) Top Vent Offset Adapter are tested
to use 24 gauge single wall fl ue connector or Listed double wall
fl ue connector to Class A Listed metal chimneys, or masonry
chimneys meeting International Residential Code standards for
solid fuel appliances.
4.
INSTALL VENT AT CLEARANCES SPECIFIED BY THE
VENT MANUFACTURER.
5
. Secure exhaust venting system to the appliance with at least
3 screws. Also secure all connector pipe joints with at least 3
screws through each joint.
6. DO NOT INSTALL A FLUE DAMPER IN THE EXHAUST VENT-
ING SYSTEM OF THIS UNIT.
7. DO NOT CONNECT THIS UNIT TO A CHIMNEY FLUE SERVING
ANOTHER APPLIANCE.
NOTE: All pipe must be welded seam pipe whenever possible.
Seal pipe joints with high temperature silicone (500°F [260°C]
minimum rated only).
NOTICE
HEARTH & Home Technologies assumes no responsibility
for the improper performance of the chimney system caused
by:
• Inadequate draft due to environmental conditions
• Downdrafts
• Tight sealing construction of the structure
• Mechanical exhausting devices