Venting System Installation - HearthStone DVI-HT 8890 Owner's Manual

OWNER'S MANUAL

Venting System Installation

1. Chimney Liner System*
1. Two Sections 3" Co-Linear Flex Liners (10ft
Min./40 ft Max.). Dura-Vent #2280
2. Chimney Liner Termination Kit (Includes Co-
Linear to Co-Axial Termination and Flashing)
Dura-Vent #923GK
3. High Wind Termination Cap Dura-Vent #991
4. High Temperature Silicone
5. Four 3-1/2" Hose Clamps (all steel or stainless)
6. *Available through your local Hearthstone dealer.
WARNING! UNDER NO CIRCUMSTANCES BLOCK
THE FLOW OF COMBUSTION OR VENTING AIR.
Before You Begin
Ensure the masonry fireplace and flue complies with
the applicable codes and both are in good condition.
Repair any damage before installation of the DVI-Ht
begins. Prepare a zero clearance (metal) fireplace by
doing the following:
1. Install the label provided on the inside of the
firebox.
2. Remove the damper, grate.
3. If necessary, remove the smoke shelf,
internal baffles, screen, masonry lining and
doors. (see the Dimensions in Figure 1).
4. DO NOT remove any insulation or structural
frame members.
5. DO NOT remove or alter the metal sides,
floor, door frame, or face of the fireplace.
The gas line enters the valve on the right side of the
unit with a provided 24" flexible connector.
Installation of the Co-linear Vent Pipe
Mark each end of one of the flexible vent pipes
"intake" with a permanent marker. Mark each end of
the other flexible vent pipe "exhaust".
•
Apply the high temperature silicone on the upper
portion of the vent (flex pipes to co-linear to co-
axial adaptor). Important: Ensure the pipe
connected to the exhaust on the stove connects
to the exhaust portion of the co-linear to co-axial
adaptor. Ensure you meet all the manufacture's
requirements when installing the adaptor and cap
assembly. Follow the manufactures instructions
when installing the same. (The exhaust pipe on
the co-linear to co-axial adaptor is the pipe that is
in the center of the adaptor.)
•
Repeat this process to the top outer edge of both
the intake and exhaust collars on the back of the
unit. The exhaust adaptor is the collar nearest
the center of the unit, the intake adaptor collar is
on the right side of the stove (refer to Figure 1, on
page 7) Install the restrictor if necessary. Slide a
hose clamp over the ends of both flexible vent
pipes. Place the flexible vent pipe marked
"intake" onto the intake collar, place the flexible
vent pipe marked "exhaust" onto the exhaust
collar. Secure them to the collar adaptors by
tightening the hose clamps with a slotted
screwdriver or 5/16" nut driver.
Observe the following guidelines when installing the
vent pipes:
Do not install the venting into a chimney serving
another appliance, be it fossil fuel, solid fuel, or
another gas.
Do not crimp or rupture the vent pipes.
2. Using the existing chimney as an air
inlet
The following installation procedure is not covered
under the ANSI Z21.88 test method and product
certification. Use of an existing chimney as an air
intake must be specifically approved by your gas
supplier and the local code Authority Having
Jurisdiction.
The chimney flue must be carefully sealed from the
room environment. Fabricate a plate of non-
combustible material and carefully fit it to the damper
area with high temperature sealant (see figure 5).
NOTE: Seal all joints. Avoid leakage around the
damper seal.
WARNING: THIS INSTALLATION MAY NOT WORK
IN A NEGATIVE PRESSURE ENVIRONMENT, OR IF
A SEAL CANNOT BE ATTAINED. IF SOOTING, OR
GHOSTING OF THE FLAMES OCCURS, PLEASE
CHECK AND REPAIR LEAKAGE, OR CHIMNEY
SYSTEM.
This stove is certified for use with a coaxial
venting system. ANSI Z21.88 standards state that
the maximum leakage rate for the venting system
is 32 SCFM @ .06" w.c. This leakage must be
accounted for if you use the chimney for intake
air.
CAUTION: A REVERSE FLUE CONDITION CAN
OCCUR IF THE VENTING IS NOT ATTACHED
CORRECTLY, OR IF THE UNIT IS LIT BEFORE THE
GLASS FRONT IS SECURED. A REVERSE FLUE
CONDITION CAN DAMAGE THE UNIT.
Model # 8890 DVI-Ht
Page 13 of 32