14
7082-150C
January
4,
2018
MT VERNON E2 INSERT-C
C. Negative Pressure
WARNING
USE ONLY RECOMMENDED VENTING COMPONENTS;
OTHERWISE MAKESHIFT PARTS MAY RESULT IN PROP
-
ERTY DAMAGE, PERSONAL INJURY, OR DEATH.
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
appliances 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
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 fire.
Considerations for successful draft include:
• Preventing negative pressure
• Location of appliance and chimney
NOTICE:
Hearth & Home Technologies assumes no
responsibility for the improper performance of the chimney
system caused by:
• Inadequate draft due to environmental conditions
• Down drafts
• Tight sealing construction of the structure
• Mechanical exhausting devices
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
to 6 inch (76-152mm) Top Vent Offset Adapter, use Listed double
wall flue connector. A Quadra-Fire Outside Air Kit (OAK-3) 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 flue connector or Listed double wall
flue 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
.
Vent Assembly to Insert Instructions:
These instructions are for connecting the vent pipe to the
vent assembly prior to installing the appliance in the fireplace.
a. Unlatch the vent assembly for the exhaust blower and
attach to the vent pipe end using high temperature
silicone and at least three screws.
b. Slide the appliance into place and line up the bent
assembly with the exhaust blower.
c. Make sure the high-temperature gasket is in place.
d. Latch the top vent assembly to the exhaust blower.
6. DO NOT INSTALL A FLUE DAMPER IN THE EXHAUST VENT
-
ING SYSTEM OF THIS Appliance.
7. DO NOT CONNECT THIS Appliance TO A CHIMNEY FLUE
SERVING ANOTHER APPLIANCE.
8. Disconnect the vent pipe from the appliance to allow removal
of the fireplace insert for the purpose of inspecting the fireplace
insert and the fireplace.
NOTE: All pipe must be welded seam pipe whenever possible.
Seal pipe joints with high temperature silicone (500°F [260°C]
minimum rated only).
WARNING
Risk of Asphyxiation!
Negative pressure can cause spillage of combustion
fumes and soot.
NOTE
: The appliance exhaust outlet is designed to ac
-
commodate 3 inch venting. Use of 4 inch venting requires
the use of a 3-to-4 inch exhaust vent increaser in addition
to any other venting components needed, sold separate
-
ly.
