Heat & Glo • FDN-4-SS, FDN-5-SS, FDN-6-SS, FDN-7-SS Installation Manual • 16400-9800 Rev. H • 11/19
28
INSTALL 4
SCREWS
REMOVE 4
SCREWS
J. INTAKE AIR
Step 1: Remove 4 screws that hold collar plate in place.
Refer to Figure 8K.1.
Step 2: Slide collar plate off fireplace.
Refer to Figure 8K.2.
Step 4: Re-attach the plate with four screws.
Refer to Figure 8K.4.
Step 3: Turn plate so collar is facing down, slide plate into slots on each side.
Refer to Figure 8K.3A and Figure 8K.3B.
Figure 8K.1
Figure 8K.2
Figure 8K.3A
Figure 8K.4
Figure 8K.3B
Fireplace
Size
Required
CFM
Open Air
Requirement
FDN-4-SS
480 CFM
75 Sq. Inches
FDN-5-SS
640 CFM
75 Sq. Inches
FDN-6-SS
800 CFM
75 Sq. Inches
FDN-7-SS
960 CFM
75 Sq. Inches
K. CHANGING FROM SIDE INTAKE AIR TO BOTTOM INTAKE AIR
UL Approved 10 Inch Class 1 or Class 0 Flex Intake Air Venting Requirements
Number of offsets
0-3
4
5
6
7
8
FDN-4-SS
Length
of
Run
100 ft
90 ft
80 ft
70 ft
60 ft
50 ft
FDN-5-SS
45 ft
35 ft
25 ft
15 ft
5 ft
N/A
FDN-6-SS
70 ft
60 ft
50 ft
40 ft
30 ft
20 ft
FDN-7-SS
32 ft
20 ft
15 ft
10 ft
N/A
N/A
Table 8J.1
Table 8J.2
Use Table 8J.2 for reference on CFM replacement air if drawing intake air from inside the house and open air requirements
for intake screen/vent or consult Hearth & Home Technologies for more information.
WARNING! Risk of Fire! DO NOT
draw intake air from an attic or crawl space. Appliance could overheat.
This fireplace has the options of air intake connections on the side or the bottom of the fireplace. This fireplace is approved
for use with 10 inch rigid metal pipe or UL approved 10 inch Class 0 or Class 1 flex for intake air. Use Table 8J.1 for venting
requirements if using UL approved 10 inch flex for intake air.
Vent runs utilizing 10 inch rigid metal pipe may be 110 feet with 11 elbows. We recommend insulating the intake air duct or
using UL approved Class 1 insulated flex in hot, humid or cold climates.
The intake pipe must maintain 1.5X the square inches of the flue pipe in free area. Intake screen/vent must be sized ap
-
propriately. Failure to do so will result in higher operating temperatures.
The fireplace may also take room air for combustion. Intake screen/vent must be sized appropriately. You must plan for
the replacement air that is consumed from the room by the fireplace. Do not draw intake air from a crawl space or an attic
(ventilated or not ventilated).
