Harman® • Accentra 52i Installation Manual_R16 • 2013 -___ • 09/15
16
3-90-00574i
Stub Mounting Bolts
Intake Stub
Stub Gasket
Self-drilling screws (2)
Outside Air Intake Weldment
D. Outside Air
The outside air kit consists of a Intake Stub, Stub Gasket,
Outside Air intake Weldment and hardware. Figure 4.7.
An adjustable chimney intake extension, part #1-00-674104
is available to be used on masonry chimneys only. Figure 4.8.
Additional information and diagrams can be found under the
“Venting Termination Design” section of the manual.
To install outside air, use kit part #1-00-574350. Follow the
installation instructions provided with the kit.
100% Outside Air Kit - #1-00-574350
Figure 4.7
E. Locating Your Appliance & Chimney
Location of the appliance and chimney will affect performance.
• Install through the warm airspace enclosed by the building
envelope. This helps to produce more draft, especially
during lighting and die-down of the fire.
• Penetrate the highest part of the roof. This minimizes the
effects of wind loading.
• Locate termination cap away from trees, adjacent
structures, uneven roof lines and other obstructions.
• Minimize the use of chimney offsets.
• Consider the appliance location relative to floor and ceiling
and attic joists.
F. Draft
Draft is the pressure difference needed to vent appliances
successfully. When an appliance is drafting successfully, all
combustion by products are exiting the home through the
chimney.
Considerations for successful draft include:
• Preventing negative pressure
• Location of appliance and chimney
To measure the draft or negative pressure on your appliance
use a magnahelic or a digital pressure gauge capable of
reading 0 - 1 inches of water column (W.C.).
The appliance should be running on high for at least 15
minutes for the test.
With the stove running on high you should have a negative
pressure equal to or greater than the number given in the
chart below. If you have a lower reading than you find on the
chart, your appliance does not have adequate draft to burn
the fuel properly.
Minimum Vacuum Requirements:
-.15 in. W.C.
• DO NOT CONNECT THIS UNIT TO A CHIMNEY FLUE
SERVICING ANOTHER APPLIANCE.
• DO NOT CONNECT TO ANY AIR DISTRIBUTION DUCT
OR SYSTEM.
May allow flue gases to enter the house
Prior to installing the flue pipe, connect a draft meter to the
stove. (The draft meter must have a minimum range of 0
to 1”) Record the first reading. Connect flue pipe to stove
and be sure all doors and windows in the home are closed.
Record the second draft reading _______. If the second
reading is more than .05” lower than the first reading, check
for possible restrictions or the need for outside air. For more
information on the draft test procedure, refer to the
Low Draft
Voltage Adjustments
section of this manual.
Chimney cap and flex termination with
flashing plate (by installer) THIS CAP
MUST BE Stainless Steel
With the intake assenbly anchored into
place, finish the 4” SS flex liner and cap
(by installer) by screwing the cap’s flashing
plate to the top of the intake assenbly.
A waterproofing sealant can be used to
seal the corners and irregularities in the top
of the masonry chimney.
After adjusting the intake assembly
for the flue size, secure the
assembly to the top of the chimney
with some form of anchors or
screws.
Masonry Flue Liner
Masonry Chimney
Adjustable Chimney Intake Extension Part # 1-00-674104
Figure 4.8
18 1/8”
18 1/8”
18”
18”
22 1/8”
18”
22 1/8”
4”
6”
1”
Harman® SS Chimney Top Intake Assembly
CAUTION
!
