Hearthstone Quality Home Heating Products, Inc
® Green Mountain Insert 70 (Model 8450)
32
D
OOR
A
DJUSTMENT
In order for the insert to burn at its best efficiency,
the door must provide a perfect seal with the firebox.
The gasket should be inspected periodically to
insure a good seal.
To improve the door seal, replace the gasket using
Kit# 94-58500.
R
EPLACING THE REFRACTORY STONE
1. Allow the insert and ashes to fully cool.
2. Open the front door of the insert and fully
clean any ash in the firebox.
3. Remove the rear stones first.
4. Remove the side stones second.
5. Remove the bottom stones last.
6. Installation is the reverse of disassembly.
Make sure that the top edges of the stones
are behind the retaining steel pieces.
Figure 34
– Refractory Stone
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
I
NSTALLATION OF
S
ECONDARY
A
IR
T
UBES AND
B
AFFLE
1. Starting with the rear tube, lean and insert the
right end of the secondary air tube into the rear
right channel hole. Then lift and insert the left
end of the tube into the rear left channel.
Figure 35
– Secondary Air Tubes 1
2. Align the notch in the left end of the tube with
the key of the left air channel hole. Using a
« Wise grip » hold the tube and lock it in place
by turning the tube as shown in DETAIL A.
Make sure the notch reaches the end of the key
way.
Figure 36
– Secondary Air Tubes 2
