Hearthstone Quality Home Heating Products, Inc
® Green Mountain Insert 70 (Model 8450)
16
c. LIFT the front casting up and onto the
tabs on top of fireplace insert. Guide
the hanger brackets onto the tabs and
let the front casting rest on the top edge
of the firebox.
d. Position the front casting by sliding it
left or right. Center the front casting
casting with the door. Carefully check
that the door can open fully without
making contact with the front casting.
e. Install the two screws below the ash lip.
These screws should pass through the
square holes in the hanger brackets
(attached to be front casting) and back
into the holes they were removed from
in Step 2. You may need to lift the front
casting slightly to engage the screws.
13. Install the soapstone in the firebox following the
diagram below.
a. Install the floor bricks first.
b. Install the 2 spacer channels along the
sides of the firebox.
c. Install the side stones, inserting the top
of each stone behind the retaining steel
then standing the stone against the
firebox wall.
d. Install the rear stones, inserting the top
of each stone behind the retaining steel
then standing the stone against the
firebox wall.
SIZE
QUANTITY
1
9" X 4.5" X 1.25"
14
2
9" X 4.25" X 1.25"
2
3
9" X 2" X 1.25"
4
4
6.5" X 4.5" X 1.25"
2
5
Spacer Channel
2
14. Inspect the installation.
a. The door opens fully and seals shut.
b. The air control moves left and right.
c. The blower turns on an off.
O
UTSIDE
A
IR
S
UPPLY
(Optional Kit #94-53500)
You can connect an outside air source directly to
this fireplace insert using an optional outside air kit.
The advantage of providing outside air directly to
the fireplace insert is that the air used by the
fireplace insert for combustion is taken from outside
the residence rather than from within the room
where the fireplace insert is located.
The International Residential Code (IRC) does not
allow the outside air duct to terminate higher than
the appliance. Some building officials restrict
vertical rise in the duct’s termination. HearthStone
recommends the termination be at the same level,
or lower than the air intake on the fireplace insert.
Locate the termination of the duct on the outside
wall of the home in such a manner to avoid the
