FMI RTTL-8DM Operating instructions

FMI
Brand
FMI
Model
RTTL-8DM
Category
Fireplaces
Type
Operating instructions

This manual is also suitable for

FMI RTTL-8DM is a round top termination device designed for use with double-wall chimneys. It features a telescoping top that allows for adjustment to fit chimneys of varying heights. The termination cap is made of 28-gauge galvanized steel and has a 13 1/4" diameter hole with a 2" collar. The unit also includes non-combustible spacers and a flashing kit for easy installation. The FMI RTTL-8DM is suitable for both chase and non-chase installations and meets the requirements of the 10' rule for chimney flue gas outlets.

FMI RTTL-8DM is a round top termination device designed for use with double-wall chimneys. It features a telescoping top that allows for adjustment to fit chimneys of varying heights. The termination cap is made of 28-gauge galvanized steel and has a 13 1/4" diameter hole with a 2" collar. The unit also includes non-combustible spacers and a flashing kit for easy installation. The FMI RTTL-8DM is suitable for both chase and non-chase installations and meets the requirements of the 10' rule for chimney flue gas outlets.

ROUND TOP TERMINATION
INSTALLATION INSTRUCTIONS
RTTL-8DM AND RTTL-8HT
Note:
For nonchase installation see column 3.
1. Construct the chase as illustrated in
Figure 1.
Note:
The shortest vertical
side must be at least 30 inches high and
the minimum inside dimension must be
at least 17
1
/2".
2. Add the pipe sections to the chimney
system as outlined in the fireplace in-
stallation instructions until the last piece
of the chimney is a maximum of 17" be-
low the top of the chase (see Figure 1).
3. Fabricate a flashing having an 13
1
/4"
diameter hole centered over the chim-
ney end with a 2" collar around the hole
(see Figure 2). Attach noncombustible
spacers at each corner and place the
flashing over the chase.
Figure 1 - Constructing the Chase
Figure 2 - Constructing the Chase Top
Flashing
As Required
28 Gauge
Galvanized Steel
13
1
/4"
Diameter
4. Secure the flashing through the sides
with 8-penny nails or sheet rock screws.
5. Place the termination cap over the
opening and slip the 8" stainless steel
inner pipe into the stainless steel chim-
ney section and the galvanized sleeve
over the chimney outlet. Lower the ter-
mination cap until its tabs rest on the
flashing collar. Bend the tabs down and
secure them with sheet metal screws.
10' RULE
The chimney flue gas outlet of the termina-
tion must be a minimum distance of 3 feet
above the highest point where the pipe pen-
etrates the roof and must be a minimum
distance of 2 feet above the highest point of
the roof within a horizontal distance of 10
feet (see Figure 5).
Figure 3 - Installing Termination Cap
Termination Cap
1" Spacer
Note:
Do Not Seal the Ventilation Openings.
Chase
Chase Top
Flashing
1
1
/2" Space
Double Wall
Chimney
Flashing
Note:
Do Not Seal the Ventilation Openings.
Figure 4 - Chase Top Flashing
1" Noncombustible
Spacer
Chase Top
Chase Facia
Figure 5- 10' Rule
NONCHASE INSTALLATION
1. Slip on the proper pitch roof flashing
and mount the storm collar above it.
Caulk the top of the storm collar where
it contacts the outer chimney pipe.
2. Mount the round top termination and
secure it with 3 sheet metal screws to
the outer chimney pipe.
2" Collar
2701 Industrial Drive
P.O. Box 90004
Bowling Green, KY 42102-9004
www.desatech.com
107458-01
Rev. B
07/02
107458 01
NOT A UPC
Telescoping Top
Tab
TM
6"
  • Page 1 1

FMI RTTL-8DM Operating instructions

FMI
Brand
FMI
Model
RTTL-8DM
Category
Fireplaces
Type
Operating instructions
This manual is also suitable for

FMI RTTL-8DM is a round top termination device designed for use with double-wall chimneys. It features a telescoping top that allows for adjustment to fit chimneys of varying heights. The termination cap is made of 28-gauge galvanized steel and has a 13 1/4" diameter hole with a 2" collar. The unit also includes non-combustible spacers and a flashing kit for easy installation. The FMI RTTL-8DM is suitable for both chase and non-chase installations and meets the requirements of the 10' rule for chimney flue gas outlets.

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