Country Flame Fireplace FP33, FP42, FP37 manual a DUCTING SYSTEMS EXAMPLES, Version

Holes in brick masonry should be a half-inch larger diameter hole than the duct pipe to be utilized. This will allow an area for expansion of the duct pipe as it heats up. Example: if ducting a Country Flame Model 33, a 6-½ inch diameter hole should be cut in the masonry for the duct: whereas, for the Model 37 and the Model 42, an 8-½ inch diameter hole should be cut in the masonry for the duct. All clearances listed in Table 1, page 2 must be strictly adhered to.

FIGURE 15 shows a side (one side only for clarity) view of the optional side vent fireplace. To order this optional side vented fireplace furnace, contact a Country Flame dealer or Country Flame direct.

FIGURE 16 provides a view of several different options that are possible for connecting fireplace furnace ducting systems. Clearly, a plan must be developed for how the ducts will be connected before installation is begun or completed. The following steps will assist in properly installing ductwork but local codes and your home’s HVAC expert should be consulted.

1.Use 26 gauge or heavier galvanized pipes for ducting. WARNING: DO NOT use plastic or flex ducting. The ductwork must be wrapped with two inches of insulation as per table 10-D of the Uniform Mechanical Code (UMC) within the masonry cavity.

2.Wrap the duct pipe for the first fifteen feet out of the masonry cavity with a minimum of two inches of insulation as per 10-D of the UMC. After fifteen feet no insulation is required but is HIGHLY RECOMMENDED in order to minimize heat loss. WARNING: Maintain a minimum clearance of at least three inches to all combustible materials over the entire length of the ductwork.

3.Ducts must have adequate straps or other means of securing the ductwork to prevent sagging or movement.

4.Do not reduce the size of the ductwork. Avoid using 90o elbows where possible. Two 45o elbows are preferable to a single 90o elbow and will minimize pressure drops within the ductwork system.

FIGURE 16a: DUCTING SYSTEMS EXAMPLES

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