Hearth and Home Technologies CFX-Crescent Vent System Approvals, Identifying Vent Components

Step 3

Installing the

Vent System

A. Vent System Approvals

This model is approved to use SL-series direct vent pipe com- ponents and terminations (as indicated in this guide), and mod- el AK-CFX air kits. Approved vent system components are la- beled for identification. This pipe is tested and listed as an ap- proved component of the fireplace. The pipe is tested to be run inside an enclosed wall. There is NO requirement for inspection openings at each joint within the wall. There is no required pitch for horizontal vent runs. This model is not approved for use with SLK-01D termination cap. NO OTHER VENTING SYS-

TEMS OR COMPONENTS MAY BE USED.

Detailed installation instructions are included with each vent termina- tion kit and should be used in conjunction with this Installers Guide. Drawing below shows vent system components and terminations.

Vent System Components
		VERTICAL
		TERMINATION	STORM COLLAR
		HORIZONTAL	ROOF FLASHING
		TERMINATION	HORIZONTAL PIPE
			SUPPORT
			PIPE LENGTH
Vent System		WALL FIRESTOP
			CEILING
Termination Kits
		90 DEGREE	FIRESTOP
		ELBOW	WALL BRACKET
			COMBUSTION
			AIR DUCT COLLAR
SLK-991DA	SLK-01TRD	NOTE: SLK-01D is NOT
		approved for use.
Figure 4. Vent Components and Terminations

Identifying Vent Components

The vent systems installed on this gas fireplace may include up to eight 90° elbow assemblies. The relationships of vertical rise to horizontal run in vent configurations using 90° elbows MUST BE strictly adhered to. The rise to run relationships are shown in the venting drawings and tables. Refer to the diagrams on the next several pages.

NOTE: TWO 45° ELBOWS MAY BE USED IN PLACE OF ONE 90° ELBOW. RISE TO RUN RATIOS IN THE VENT SYSTEM MUST BE FOLLOWED IF 45° ELBOWS ARE USED.

WARNING: THIS UNIT IS DESIGNED TO OPERATE USING OUTSIDE COM-

!BUSTION AIR. IT IS MANDATORY TO INSTALL AN AK-CFX AIR KIT USING 4-INCH INSULATED DUCTING. THE 4-INCH (102MM) DUCT COLLAR FOR THE AIR KIT WILL COME MOUNTED TO THE FIREPLACE. SEE FIGURE 6.

NOTE: When installing the AK-CFX outside air kit, it is normally not necessary to install the air intake cap on the same wall as the exhaust termination cap. However, installations involving tall buildings or areas subjected to frequent high winds, it is recommended that the air intake cap be installed on the same wall as the exhaust termination cap.

Heat & Glo • CFX-CRESCENT • 705-900 Rev. P • 12/07 13