HearthStone Manchester Owner's Manual page 15

Use the following checklist to ensure that your
masonry chimney
requirements:
Masonry Chimney wall construction:

Mortared brick or modular block at least 4" (102
mm) thick – must use liner

A mortared rubble or stone wall – must use liner
Flue liner options:

Tile - minimum wall thickness of 5/8" (16 mm),
installed with refractory mortar, and with at least
1" (25 mm) air space around the liner

Stainless steel - UL listed 6" diameter, insulated
or wrapped liner, or the space around the liner
filled with vermiculite or suitable material (these
keep the liner warmer for better performance)

Ensure any equivalent flue liner is a listed
chimney liner system meeting type HT
requirements or other approved material.
Interior chimney requirements:

Must have at least 2" (51 mm) clearance to
combustible materials
3'-0"
MINIMUM
10'-0"
Hearthstone Quality Home Heating Products, Inc ®
meets these minimum
2'-0"
MINIMUM
Figure 7 – Chimney Height Requirements

Must install fire stops at the spaces where the
chimney passes through floors and/or ceiling

Any insulation material must be at least 2" (51
mm) from the chimney
Exterior chimney requirements:

At least 1" (25 mm) clearance to combustible
materials
Chimney height requirements (See Figure 7):

At least 3 feet (0.9 m) higher than the highest
part of the roof opening through which it passes.

At least 2 feet (0.6 m) higher than any part of the
roof within 10 feet (3 m) measured horizontally
from the top of the chimney.
The recommended minimum chimney height is 10
feet (3 m) off the floor. The recommended maximum
chimney height is 30 feet (9m).The Manchester
requires a draft between 0.06" and 0.1" water
column. Ensure your chimney is long enough to
provide the minimum draft, and use a damper if your
installation has a required chimney height that
provides too much draft.
3'-0"
MINIMUM
14
2'-0"
MINIMUM
Manchester Model 8361