Figure 9.11 Attach the first vent section (it will snap into place). Slide the insulation gasket onto the vent section, up against the appliance and over the tabs.

C. Installing the Non-combustible Board

The factory supplied non-combustible board spans the dis- tance from the top of the fireplace to the center of the framing header. This board must be used. See Figure 9.12.

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Figure 9.12 Non-combustible Board

D. Securing and Leveling the Appliance

WARNING! Risk of Fire! Prevent contact with:

Sagging or loose insulation

Insulation backing or plastic

Framing and other combustible materials

Block openings into the chase to prevent entry of blown- in insulation. Make sure insulation and other materials are secured.

DO NOT notch the framing around the appliance standoffs.

Failure to maintain air space clearance may cause overheating and fire.

The diagram shows how to properly position and secure the appliance (see Figure 9.15). Nailing tabs are provided to secure the appliance to the framing members.

Bend out nailing tabs on each side.

Place the appliance into position.

Keep nailing tabs flush with the framing.

Level the appliance from side to side and front to back.

“Square” the unit by securing diagonal dimensions to within 1/4 inch of each other. See Figure 9.13.

Shim the appliance as necessary. It is acceptable to use wood shims underneath the appliance.

Secure the appliance to the framing by using nails or screws through the nailing tabs.

Secure the appliance to the floor by inserting two screws through the pilot holes at the bottom of the appliance.

A

B

Note: Diagonal dimensions (A) and (B) must be within 1/4 inch of each other.

Figure 9.13 Positioning the Appliance Squarely

NAILING TABS

(BOTH SIDES)

PILOT HOLES

Figure 9.14 Proper Positioning and Securing of an Appliance

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Heatilator • CD4236IR-C, CD4842IR-C2207-900 Rev. J • 11/11

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Heatiator CD4842ILR-C, CD4236ILR-C Installing the Non-combustible Board, Securing and Leveling the Appliance, Header