Hearth & Home CAK4A Installation Instructions

Chimney Air Kit
Models: CAK4A, CAK5A, CAK8A
This chimney air kit has been tested and listed to the UL 127 Standard and the ULC S610 Standard for use on the Hearth &
Home Technologies, inc. factory-built fireplaces by Underwriters Laboratories, Inc. Check with your local building code agency
before you begin installation to ensure compliance with local codes, including the need for permits and follow-up inspections.
If you encounter any problems regarding code approvals, or if you need clarification of any of the instructions contained here,
contact your Hearth & Home Technologies dealer. For a dealer nearest you, please visit www.hearthnhome.com.
CAUTION:
Verify you have the correct Chimney Air Kit
(CAK) kit for your specific HHT fireplace.
Refer to the Installation Instruction/Owner's Manual that
came with the fireplace for correct chimney air kit to be used.

KIT CONTENTS:

• (1) Chimney Air Box Assembly
• (1) Outside Air Inlet Vent Hood
• (2) Wire Ties
• (1) Hardware Pack
A
Model
CAK4A 12 in.
CAK5A 14 in.
CAK8A 17 in.
Figure 1 - Chimney Air Kit

INSTRUCTIONS:

• Once the chimney pipe is installed, place the box on top
of the fireplace around the chimney pipe and attach the
two halves of the CAK together. See Figures 2, 3 and 4.
Installation on a see-through fireplace will require bending
the tabs down to match the angle of the top pan/smoke
shield. See Figure 3.
tm tm
A
C
A B C
5-1/4 in. 10-1/2 in.
5-1/4 in. 13 in.
5-1/4 in. 16 in.
Hearth & Home Technologies • Chimney Air Kit • 4070-144 Rev B • 04/23
• Use the pre-punched holes in the tabs as guides and drill
3/32" holes through the fireplace top.
• Secure the box with the screws provided.
Figure 2 - On Top of Fireplace
B
Figure 3 - On top of See-Through Fireplace
Installation
Instructions
1