Instruction manual

Figure 5. Completed back frame Fireplace installation

Back framing the Fireplace

NOTE: Maintain a 1" clearance around the throat (projection at the front of the replace that holds the glass door) when installing 2x4s

for back framing�

Step 1)� Cut and install one 2x4 to t horizontally under the replace throat.

Step 2)� Cut and install required quantity of short ller 2x4's to t vertically under the horizontal piece.

Step 3)� Cut and install four vertical 2x4's. Place 2 on each side of the replace throat.

Step 4)� Join the two steel header pieces to get the required length, see chart below for steel header measurements�

Step 5)� Install supplied steel header 1" above the throat. Attach steel header to vertical 2x4's as shown in gure 5�

Step 6)� Cut and install one horizontal 2x4 below the top frame�

1” clearance

Model

Supplied Steel

Header

Measurements

Installed Steel

Header

Measurements

R720*

80" x 3" - qty 2 95" x 3"

R820*

80" x 3" - qty 2 107" x 3"

Steel header

(supplied by Montigo)

2-pcs 2 x 4 (vertical)

Both Sides Typ.

1” clearance 1” clearance

x 4

(horizontal)

2 x 4

(horizontal)

2 x 4

(Vertical)

R720 & R820 Power Vent Indoor Gas Fireplace

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XG0772 - 100614

Installation