Introduction
SECTION 1
INTRODUCTION
#HTK-EXT
R.10, October 2021
3
HUSSONG MFG. CO., INC.
KOZY HEAT FIREPLACES
1.1 Introduction
The #HTK-EXT Exterior Heat Transfer Kit is designed to remove
unwanted heat from your home.
The following model(s) allow a maximum installation of two heat
transfer kits: #ALP-36S, #BHM-38, #BHM-44, #BHM-52, #CAR-39, #CAR-
46, #CLW-40, #CLW-50, #CLW-50-MV, #CLW-ST, #CLW-72, #SFD-36
1.2 Approvals
The flexible ducts used with the #HTK-EXT feature are manufactured
and marked to the requirements of UL-181, Class 1 air duct.
1.3 Installation
Model #SFD-36 corner installations have different minimum
dimensions to allow space for the SFD-HTK air chute. See appliance
installation and operation manual for more information.
1.3.1 Installation Precautions
This device must be installed by a qualified installer in accordance
with these instructions and in accordance with local codes, if any, and
with National Electrical Code ANSI/NFPA 70, current edition.
The #HTK-EXT fan will generate sound during operation. The effects
of the increased sound level can be minimized with careful planning
during installation of the system.
Disconnect electrical power supply before performing any
maintenance, repair, or electrical wiring.
WARNING: Failure to install, operate, and maintain the heat transfer
system - exterior in accordance with manufacturer's instructions will
result in conditions which may produce bodily injury and/or property
damage.
1.3.2 Installation Guidelines
The discharge outlet of the #HTK-EXT must be directed down to
prevent water infiltration.
Minimum Duct Run Length:
3' (914mm)
Maximum Duct Run Length:
25' (7.8m)
Clearance to flexible duct:
0" (0mm)
IMPORTANT: The insulated flexible pipe is zero clearance to combustibles
but CANNOT be compressed into a smaller diameter.
NOTE: Support duct at intervals of no greater than 4' (1219mm), with
no more than 1/2" (13mm) sag between supports as required by local
code. Do not substitute any other duct work as a replacement for the
provided insulated flexible duct.
1.3.3 Painting Requirements
The #HTK-EXT may be painted to a desired color. The paint selected
must have sufficient temperature and environmental ratings as
described below.
•
Prior to painting the #HTK-EXT cover assembly, sand the existing
coating with sandpaper or steel wool.
•
The front of the cap cover assembly may be field-painted and
cured up to 400 degrees Fahrenheit (204° C). All remaining parts
of the cap may be painted, but they may not be cured beyond
190°F (88°C) due to gaskets and components overheating.
•
Silicone sealant will be used during installation, which could
affect adherence of paint. Please advise local painter of silicone
content.
1.0 INTRODUCTION
FIGURE 1.1
Possible Air Duct Locations/Terminations
