Empire Comfort Systems DVVK-4FV User manual

21552-0-0506 Page 1
Empire Comfort Systems, Inc.
DVVK-4FV Direct Vent Vertical Termination Kit
Installation Instructions
This termination kit can only be used with Empire Comfort Systems direct vent fireplaces listed for use with
DVVK-4FV Vertical Flex Vent Kit. Please review the instructions packaged with your fireplace and verify the
fireplace model number. Check that this flex vent system is listed for use with your fireplace model prior to
starting the installation.
IMPORTANT SAFETY INFORMATION
• The vertical termination cap MUST be vented directly to the
outside. The termination kit MUST NEVER be connected to
a chimney flue(s) servicing a separate solid-fuel burning ap-
pliance or any other appliances.
• Termination cap MUST NOT be mounted horizontally.
• The flexible vent pipe cannot be intermingled with any of the
rigid vent pipe section(s). DO NOT connect two sections of
flexible vent pipe together to achieve a longer length without
the use of approved connectors.
• The installation must conform with local codes or in the ab-
sence of local codes, with the National Fuel Gas Code, ANSI
Z223.1 (in the United States) or with the current installation
code CAN/CGA B149 (in Canada).
• Only Direct Vent fireplaces approved for use with Empire
Comfort Systems, Inc. DVVK-4FV termination kit shall be
used. See PARTS LIST/ILLUSTRATIONS section for vent
component identification.
• Horizontal vent runs must be supported every 2 feet using
wall straps. Vertical runs must be supported every 3 feet us-
ing wall straps. Slip wall straps loosely on to pipe. Attach
installer provided straps to framing members using nails or
screws.
• The fireplace and venting system should be inspected before
initial use and at least annually by a qualified field service
person. Inspect the external vent cap on a regular basis to
make sure that no debris is interfering with the airflow. In-
spect entire venting system to ensure proper function.
• Please refer to the fireplace instructions for information on
Termination Cap clearances.
This vent kit may be installed as an OEM installation in a manufactured home (USA only) or mobile
home and must be installed in accordance with the manufacturer’s instructions and the manufactured
home construction and safety standard, Title 24 CFR, Part 3280 or Standard for Installation in Mobile
Homes, CAN/CSA Z240 MH.
CAUTION
All Fireplaces listed for use with the DVVK-4FV will operate safely when installed in accordance with this instruction manual. Read
all instructions before starting installation, then follow these instructions carefully to maximize fireplace performance and safety.
Report damaged parts to your dealer.
WARNING
Any common venting of the gas appliance using the DV vent kit with other gas appliances is not allowed. Do not connect this appli-
ance to a chimney flue servicing a separate solid fuel-burning appliance.
WARNING
Failure to follow these instructions may create a possible fire hazard and will void the warranty.
WARNING
Always maintain minimum clearances around vent systems. The minimum clearance to combustibles for horizontal runs of vent pipe
is 3 inches from the top, and 1 inch from the sides and bottom of the vent system. Do not pack the open air spaces around the fireplace
or flue with insulation or other materials. Any horizontal run must have a 1/4” rise for every one (1) foot of run towards the vent ter-
mination. The vent above the roof must terminate vertically.
WARNING
Contact your Local Building and Fire Officials about restrictions and installation inspections in your area.

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PRE-INSTALLATION INFORMATION:
Items Required For Installation:
Tools Building Supplies
Phillips Screwdriver
Hammer
Saw and/or saber saw
Level
Measuring Tape
Electric Drill and Bits
Pliers
Square
Tin Snips
Framing Materials
Wall Finishing Materials
Caulking Material (Noncombustible)
Support Strap supplies
Before You Start:
Plan your installation. Read these instructions and the fireplace installation manual before installing unit and vent system. Set unit in
place and survey how best to vent the unit. After the vent configuration has been decided, stretch the flex pipe components out, then trim
off what will not be needed.
Refer to the fireplace installation manual for information on vertical venting requirements. The maximum length of vent when using flex
venting is 35 feet total. Contact your dealer or distributor for information on flex vent extension kits that may be added to the DVVK-
4FV kit, in order to terminate up to 35 feet. Available extension kits include the DVEK-10 (10’ Flex) or the DVEK-25 (25’ Flex) exten-
sion kits. The extension kits include connection hardware.
Installation of the Vertical Flex Termination Kit
WARNING
Ensure that the venting system exits the structure through the roof and does not terminate less than 12 inches (305mm) above the
roof.
WARNING
Refer to your fireplace homeowner’s manual for the minimum and maximum venting requirement of your fireplace prior to installa-
tion. Failure to do so may cause a fire hazard.
WARNING
This flexible pipe termination kit is ONLY for vertical terminations.
WARNING
Any horizontal run section must have a 1/4” rise for every one (1) foot of run towards the vent termination. Never allow the vent pipe
to run downward. This could cause high temperatures and may present a fire hazard. This vertical kit may incorporate two (2) 90 de-
gree bends, but must terminate vertically.
CAUTION
This flex vent kit can be installed either vertically or horizontally off of Direct Vent Series fireplaces but must only terminate verti-
cally.
WARNING
Because of sharp edges, always use gloves when handling the flex vent components.
CAUTION
Vent connections should overlap a minimum of 1” for proper sealing.
CAUTION
Always stretch and secure venting with metal strapping secured with nails (nails and strapping not supplied) to ensure that the flex
vent runs remain true.
INSTALLATION NOTE:
If space permits, it is generally easier to attach venting in the top vent configuration.

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1. Unpack vent components and check all items for shipping
damage.
2. For this venting system to operate as designed it is depen-
dent on the use of all parts and procedures detailed in these
instructions. Failure to follow these instructions may poten-
tially affect the performance of this vent system and the at-
tached appliance.
3. As per the fireplace manufacturer’s instructions, replace the
existing 6 5/8” diameter fireplace vent adapter with the 7”
diameter flex vent fireplace adapter included in the vent kit.
Install the adapter collar with the screws removed from the
standard fireplace collar. Refer to the fireplace manual for ad-
ditional information on the vent collar removal and installa-
tion.
4. Once the fireplace location has been determined, mark the
ceiling where the flex vent will pass through. Cut an opening
for installation of the firestop thimble assembly. The open-
ing must measure a minimum of 9-1/2” x 9-1/2” square. See
Figure 1.
5. Next, determine the location for the cutout in the roof open-
ing. This opening must be large enough to provide a mini-
mum 1” air space clearance from the vertical vent pipe to any
combustible framing.
6. Install the Firestop/Thimble assembly to the framed opening
in the ceiling using common nails or screws.
Note: The thimble assembly is adjustable up or down as
needed within the firestop. It is also designed with a pivoting
firestop for use with 0 - 3/12 pitch cathedral ceilings.
7. To begin vent system assembly, first layout all the vent com-
ponents on the floor in the order in which they will be as-
sembled.
8. Stretch the 4” diameter inner flex flue and 7” diameter outer
flex vent to the maximum length of 6 foot.
9. Install the spring spacers provided around the 4” diameter
flex flue at 1 foot intervals, then slide the flue pipe with spac-
ers into the 7” diameter outer flex vent pipe. Make sure the
springs are spaced evenly starting at 12 inches from the fire-
place collar. See Figure 2.
NAILS
(4) REQ'D.
THIMBLE
FIRESTOP
CEILING FRAMING
9½” Min.
(241mm)
9½” Min.
(241mm)
NOTE: ADDITIONAL
HOLES FOR ADJUSTING
THIMBLE UP OR DOWN
AS NEEDED
FLEX OUTER
AIR INTAKE PIPE
SPACER SPRINGS
FLEX FLUE PIPE
Figure 1 Figure 2
SPACER SPRINGS
4" FLEX
VENT PIPE
12”
305mm
12”
305mm
12”
305mm
12”
305mm
Step-By-Step Installation For Flex DV Kit

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10. With the flex vent assembly and the 48” long hard pipe
components laid out on the floor, begin securing these parts
together. First, apply a generous bead of silicone sealant to
the inside of the 4” diameter flex flue (not the end with the
pre-installaed connector), then slide the flex flue over the 4”
diameter hard pipe flue. Be sure to overlap at least 1-1/4”. Se-
cure this connection with a 4” diameter band clamp provided.
Be careful not to damage or tear the flex flue when tightening
clamp.
11. Repeat the connection process for the outer 7” diameter flex
vent to hard pipe connection. Use silicone sealant at this joint
also, overlap at least 1-1/4”, then secure the joint with the 7”
diameter band clamp provided. Be careful not to damage or
tear the flex vent pipe when tightening the clamp.
12. While the venting is still on the floor, assemble the roof jack
components as shown in Figure 3 and pre-install the roof jack
assembly to the hard pipe approximately 18” from the top
end of the hard pipe.
13. Now the pre-assembled vent system may be carried to the
roof, then lowered through the roof cutout opening (see step
5). Feed the flex vent end down through the roof opening and
firestop thimble assembly installed in step 4.
14. Secure the roof support assembly to the roof sheathing with
at least (4) nails/screws through each support bracket. Check
that the combustible clearances through the roof framing will
maintain at least a 1” clearance from the vent pipe.
15. Determine how high the vent terminal should be located
above the roof line based on the roof pitch information shown
in Figure 4. Adjust the vent system height by loosening the
pre-installed roof support pipe clamp and sliding the vent
pipe up or down as pre-determined, then re-tighten the pipe
clamp. Install a couple of sheet metal screws through the pipe
clamp into the outer hard vent pipe to lock in place.
16. Check to make sure that the bottom end of the flex vent is
long enough to reach the fireplace adapter collars. If too long,
trim off the extra flex vent not needed.
WING NUT (2)
PIPE CLAMP
ROOF BRACKET (2)
NUT (2)
SCREW (2)
H
X
12
ROOF PITCH IS X/12
H (Min.) - Minimum height from
roof to lowest discharge opening
DISCHARGE
LOWEST
OPENING
VENT CAP
GAS VENT
Figure 3
Figure 4
ROOF PITCH H (Min.)
Flat to 6/12 12” (305mm)
6/12 to 7/12 15” (381mm)
Over 7/12 to 8/12 18” (457mm)
Over 8/12 to 16/12 24” (610mm)
Over 16/12 to 21/12 36” (914mm)

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17. To attach the vent connections at the fireplace, be sure the 7”
diameter adapter collar has been installed per step #3. Apply
a bead of silicone sealant to the 4” diameter flex connector,
then slide the flex pipe adapter collar into the fireplace flue
collar and secure by installing a minimum of two (2) screws
through the flue collar and into the adapter. See Figure 5.
18. Apply sealant to the 7” diameter adapter collar, slide outer
flex vent over the collar, then secure with a 7” diameter band
clamp. See Figure 5.
19. Once the lower connections are made and the flex pipe is
secured with support bands as required (3 foot minimum be-
tween supports) then the roof flashing can be installed. See
Figure 6.
20. Install the roof flashing, and seal using common construc-
tions practices.
21. An additional storm collar band is provided in kit that may be
used as an attic insulation shield. The collar can be installed
around the flex pipe (or hard pipe) just above the firestop
thimble. This collar will act as a shield to prevent blown in-
sulation from entering the thimble.
22. To complete the vent installation, install the vent termination
cap to the top of the hard vent pipe assembly. Mate up the flue
and outer telescopes with the hard pipe assembly, then secure
by installing a minimum of two (2) sheet metal screws into
the overlapped flanges of the cap and pipe.
23. Figure 7 shows a completed installation with components
identified and other installation information such as heights
and clearance to combustibles.
BAND CLAMP
APPLY HIGH
TEMPERATURE
SEALANT
(WITH GASKET)
ADAPTER COLLAR
7" DIA. INLET
4" DIA. FLUE
ADAPTER
COLLAR
FLUE PIPE
4" DIA. FLEX
7” DIA. FLEX AIR
INTAKE PIPE
Vent Cap
Storm
Minimum
Clearance to
Combustibles
Collar
Exterior
Roof
Roof
Flashing
Support
Roof
Assembly
7"(178mm) Dia.
Must Extend
7"(178mm) Dia.
Hard Pipe
Through Roof
Flashing
1” (25mm)
Flex
Figure 5
Figure 6

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Figure 7
Storm
Clearance to
Combustibles
Collar
Exterior
Roof
Roof
Flashing
Roof Jack
Adujstable
Assembly
4' Long Rigid Pipe
Direct Vent
Fireplace
Required From
Vent Pipe
Firestop/Thimble
Ceiling
Straps (As Req'd.)
Venting Support
With Gasket & Clamps
7" Dia. Adapter Collar
4" Dia. Flue Connector
Assembly
Firestop/Thimble
Adjustable Storm Collar (Use To Keep
Keep Insulation Out Of
Inlet Vent Connections
Clamps At Flue &
Vertical Termination
Thimble Assembly)
35 ft. Max
Note: DVVK-4VF Kit
Maximum Height
(including fireplace) Is
13’. To Extend Vent
Run, an Additional
Vent Extension Kit
Is Necessary

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Vertical Flex Termination Kit
Item
Number Item Description Repair Part No.
Quantity
Supplied
1 4”/7” Vertical Termination Cap MF100038 1
2 Roof Support Kit MF100503 1
3 2 Ply Alum Flex 4” Diameter by 6 ft. MF04ALA2F006 1
4 2 Ply Alum Flex 7” Diameter by 6 ft. MF07ALA2F006 1
5 4”/7” x 48” Rigid Pipe Assembly MF100554 1
6 Firestop Thimble Assembly MF100124 1
7 Roof Flashing (0/12 to 6/12) MF100091 1
8 7” Flex Adapter Collar with Gasket MF100524 1
9 7” Storm Collar MF100147 2
10 Spring Spacers MF100548 5
N/S Clamp 4” Diameter MF100330 2
N/S Clamp 7” Diameter MF100534 2
N/S #8 x 1/2” Self Drilling Screws N/A 20
N/S HT Silicone N/A 1
N/S #8 x 5/8” Self Drilling Screws N/A 10

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Empire Comfort Systems, Inc.
918 Freeburg Ave. Belleville, IL 62220
PH: 618-233-7420 or 800-851-3153
FAX: [phone] or 800-443-8648
[email protected]
www.empirecomfort.com