CFM Corporation UVDR36C, UVDR42C Installing the Firebox, Framing the Firebox, Install the Firebox

UVDR Series Unvented Gas Fireplaces

3a

42"

5" Min.

Combustible Per- pendicular Wall

3b

10"

Clearances without Canopy

6" 24" Min.

Noncombustible

Material16"

Min.

9���" Min.

Fireplace

OpeningFP604b

Clearance to Combustible Mantel Projections without

3cCanopy

(“)	24
Opening
	22
	20
Fireplace
	18
	16
of
	14
Top
	12
from
	10
Clearance*
	8
	2	4	6	8	10

Mantel (Combustible)

Projections (“)

Clearance to Combustible Mantel Projections with 4”

3dCanopy

22
20
18
16
14
12
10
8
6
2	4	6	8	10

*Combustible Projections above the fireplace must be within the area described by the dashed line.

T225

Fig. 3 Clearances to combustibles.

screws are located across the top of the fireplace opening approximately 5” to the right and left from center. Two (2) screws are located 4” down from the top on each side of the fireplace opening. Place the canopy, making sure the 1/4” hex head screws across the top of the opening align with the clear- ance holes in the canopy. Secure with the four (4) previously removed screws.

WARNING: The firebox canopy must not be modified or replaced with a canopy that may be provided with the unvented decorative room heater.

4.Floor Clearances: No clearance is required if the appliance is installed per these instructions.

Installing the Firebox

This list of specific instructions will help you make cer- tain that every installation operation is done correctly. Complete the installation steps in the sequence shown.

LOCAL BUILDING CODES SHOULD BE CONSULTED IN ALL CASES AS TO THE PARTICULAR REQUIRE- MENTS CONCERNING THE INSTALLATION OF FAC- TORY BUILT FIREPLACES.

Select the location for the fireplace by taking into con- sideration the factors previously outlined in the Locating the Fireplace section of the manual.

Step 1: Framing the Firebox

The width of the framed opening must be 39” for 36” models or 45¹⁄₄" for 42" models. (Fig. 4)

The entire fireplace can be elevated above the floor to achieve a raised hearth effect. This can be done by adding a small platform to achieve the desired height.

NOTE: Refer to Pre-wiring the Junction Box and Electri- cal Service on Page 7.

Step 2: Install the Firebox

Install the firebox into the framed opening by setting it directly in front of the opening and sliding it into the proper position.

Step 3: Level the Firebox

Check the level of the firebox on the top edge of the fire- place face. Shim if necessary.

Step 4: Secure the Firebox

Four (4) nailing flanges are supplied with the fireplace (found on the fireplace hearth). To level the box and secure it firmly in place, remove the nailing flanges from the hearth and install at the sides of the fireplace as shown in Figure 5.

NOTE: The nailing flanges have two (2) sets of holes to allow for adjustment for 1/2” or 5/8” offset of the face of the unit. When installing the nailing flanges, choose the set of holes on the nailing flange that fit with your application.

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