NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
HEARTH PRODUCTS
KITS AND ACCESSORIES
750,206M
REV. NC 03/2006
KIT CONTENTS
ITEM
QUANTITY
DESCRIPTION
1
1 ea.
Air Gate Assembly
2
1 ea.
Arm, Air Gate
3
1 ea.
Bracket, Air Gate Arm
4
1 ea.
Collar, Outside Air
5
1 ea.
Duct, 4”
6
1 ea.
Hardware Kit (9 long screws & 4 short screws)
7
1 ea.
Instruction Sheet
Table 1
- Refer to Figure 1
TOOLS / SUPPLIES REQUIRED
• 5/16” Nut driver or Socket
• Duct Tape
• Silicon Type Caulking
GENERAL INFORMATION
This kit is for use with models UVF-36, UVFRC-3628, UVFRC-3628-H,
UVFRC-4228 & UVFRC-4228-H Ventfree fi reboxes when installed in con-
ventional construction.
These kits have an air gate assembly which allows adjustment of the amount
of outside air delivered to the fi re for combustion. Only one air kit, located
on the right side of the fi rebox, is required.
If you encounter any problems, need clarifi cation of these instructions or are not
qualifi ed to properly install this kit, contact you local distributor or dealer.
Retain These Instructions for Future Reference
INSTALLATION INSTRUCTIONS
1
. Remove the outside air knock-out on the right hand side of appliance
(See
Figure 2
for location).
2
. Assemble the Air Gate as shown in
Figures 3 & 4.
Figure 1 - Kit Contents
(see Table 1)
Cat. No. Model
Description
H3991
OAK-UVFRC
OUTSIDE AIR GATE & DUCT KIT
1
INSTALLATION INSTRUCTIONS FOR OUTSIDE COMBUSTION AIR GATE KIT FOR USE WITH UVF-36,
UVFRC-3628, UVFRC-3628-H, UVFRC-4228 & UVFRC-4228-H UNIVERSAL VENTFREE FIREBOXES
1
6
5
1
7
4
2
3
Remove Outside
Air Knock-Out
Right Hand Side
of Firebox
Figure 2
Side View of Arm
installed into Air
Gate.
Air Gate Assembly
Air Gate Arm
Figure 3
When assembled onto appliance, the notch
here must be positioned down as shown.
Outside View of
Arm installed
into Air Gate.
Air Gate Arm
Air Gate
Figure 4
3
. Take the Air Gate Assembly and feed the arm
through the round opening (see
Figures 5 & 6
)
and then through the side frame opening. Ensure
the air gate arm remains attached to the air gate
(see
Figure 7).
Air Gate Arm
Figure 5
Right Side
Panel on
Firebox
WARNING
Do not operate the combustion air gate with a fi re in the fi rebox
unless all components of this kit have been installed.
Air Gate
