![background image](http://html1.mh-extra.com/html/desa/ez18nr/ez18nr_owners-manual_2485860012.webp)
www.desatech.com
114668-01F
12
INSTALLATION
Continued
FLOOR CLEARANCES
A. If installing appliance on the floor level,
you must maintain the minimum distance
of 14" to combustibles (see Figure 8).
B. If combustible materials are less than 14"
to the fireplace, you must install appliance
at least 5" above the combustible flooring
(see Figure 9).
14"
Min.
Combustible
Material
Noncombustible Material
Figure 8 - Minimum Fireplace Clearances
If Installed at Floor Level
Hearth
5"
Min.
Combustible
Material
Figure 9 - Minimum Fireplace Clearances
Above Combustible Flooring
INSTALLING DAMPER CLAMP
ACCESSORY FOR VENTED
OPERATION
Note: When used as a vented heater, ap-
pliance must be installed only in a solid-fuel
burning fireplace with a working flue and con
-
structed of noncombustible material.
For Massachusetts Residents Only:
Instal-
lation of this vented gas log set in the Com-
monwealth of Massachusetts requires the
damper be permanently removed or welded
in the fully open position.
Damper
Damper
Clamp
Damper
Damper
Clamp
Damper
Figure 10 - Attaching Damper Clamp
Manufactured Fireplace
Masonry Fireplace
If your heater is a manually-controlled model,
you may use this heater as a vented product.
There are three reasons for operating your
heater in the vented mode.
1. The fireplace does not meet the clearance
to combustibles requirements for vent-
free operation.
2. State or local codes do not permit vent-
free operation.
3. You prefer vented operation.
If reasons number 1 or 2 apply to you, you
must permanently open chimney flue damper.
You must install the damper clamp accessory
(to order, see
Accessories
, page 34). This
will insure vented operation (see Figure 10).
The damper clamp will keep damper open.
Installation instructions are included with
clamp accessory.
See chart below for minimum permanent flue
opening you must provide. Attach damper
clamp so the minimum permanent flue open
-
ing will be maintained at all times.
Area of Various Standard Round Flues
Diameter
Area
5"
20 sq. inches
6"
29 sq. inches
7"
39 sq. inches
8"
51 sq. inches
Chimney
Height
Minimum Permanent
Flue Opening
6' to 15'
39 sq. inches
15' to 30'
29 sq. inches