Ventis OCV-RR-36 Instruction Manual

Ventis Forever Firebox – OCV-RR-36/42 – 07-10-2020 rev4 1
Installer: Leave this manual with the party responsible for use and operation.
Owner: Retain this manual for future reference.
This Fireplace uses 8” Ventis Class-A Factory Built Chimney Systems. A 2” clearance to
combustibles and building insulation is required between the chimney pipe and any combustible
material.
Models:
OCV-RR-36
OCV-RR-42
WARNING! FIRE RISK:
For use with solid wood fuel,
processed solid fuel fire logs,
unvented decorative gas logs, or vented gas
logs only. Other fuels may overfire and
generate poisonous gases.
WARNING! The information in this
manual must be followed exactly or
a fire or explosion may result which can
cause property damage, injury, or death.
 DO NOT over fire this fireplace as it will void your
warranty.
 DO NOT store or use gasoline or other flammable
liquids in the vicinity of this fireplace.
 All clearances to combustibles in this manual
must be followed exactly. A failure to comply may
result in a house fire.
WARNING! HOT SURFACES!
Glass and other surfaces are hot
during operation and cool down.
 DO NOT touch the glass until it is cooled
 Keep children away from the fireplace
 Carefully supervise children that are in the same
room as the fireplace
WARNING! HIGH TEMPERATURES!
Alert adults and children to the
hazards of high temperatures.
 High temperatures may ignite clothing or other
flammable materials.
 Keep clothing, furniture, drapes, and other
flammable materials away from the fireplace.

Ventis Forever Firebox – OCV-RR-36/42 – 07-10-2020 rev4 2
Table of Contents
1. General Product & Safety Information ..............................................3
2. Design & Installation Considerations .................................................3
3. Fireplace Location Selection ...............................................................4
4. Fireplace & Chimney Location ............................................................5
5. Equipment, Tools, & Hardware ..........................................................5
6. Inspect the Fireplace & Components .................................................5
7. Fireplace System .................................................................................5
8. Safety Considerations .........................................................................6
9. Fireplace Dimensions ..........................................................................7
10. Clearances............................................................................................8
11. Chase Construction .............................................................................9
12. Framing the Fireplace ...................................................................... 10
13. Mount & Level the Fireplace ........................................................... 11
14. Metal Hearth Strips .......................................................................... 11
15. Chimney Requirements .................................................................... 12
16. Optional Offset/Elbow Installation .................................................. 13
17. Termination Requirements .............................................................. 14
18. Chimney Installation......................................................................... 14
19. Firestops ........................................................................................... 15
20. Attic Insulation Shield ...................................................................... 15
21. Complete the Top Termination ....................................................... 16
22. Chase Installation ............................................................................. 16
23. Finishing the Fireplace ..................................................................... 16
24. Hearth Extensions – Building & Finishing........................................ 17
25. Hearth Extension 4” or more Below Fireplace Opening ................ 18
26. Hearth Extension Less Than 4” Below Fireplace Opening ............. 18
27. Fireplace Opening & Hearth Extensions Flush with the Floor ....... 19
28. Non-Combustible Sealant Material ................................................. 19
29. Mantel & Wall Protection ................................................................ 20
30. Gas Log Provision ............................................................................. 21
31. Gas Log Conversion .......................................................................... 22
32. Assembling Loose Parts/Brackets .................................................... 23
a. Refractory Panel Retaining Clips ...................................................... 23
b. Log Grate .......................................................................................... 23
c. Wall Stud Nailing Flanges ................................................................. 23
33. Replacement Firebox Components ................................................. 24
34. Optional Components ....................................................................... 24
35. Chimney Components ...................................................................... 25
36. General Operating Parts ................................................................... 26
a. Flue Damper ...................................................................................... 26
b. Glass Doors ........................................................................................ 27
37. Creosote & Soot Formation .............................................................. 28
38. Maintenance Procedures (Professional) ......................................... 28
39. Safety & Operating Information ....................................................... 29
c. General Fireplace Safety ................................................................... 29
d. Clear Space ........................................................................................ 29
e. Log Grate ........................................................................................... 30
f. Firebrick & Refractory ....................................................................... 30
g. Fireplace Screen ................................................................................ 30
h. Flue Damper ...................................................................................... 30
i. Glass Doors ........................................................................................ 30
j. Chimney Fire ..................................................................................... 30
40. Overfiring ........................................................................................... 31
41. Fuel .................................................................................................... 32
42. Moisture Content .............................................................................. 32
43. Seasoning Firewood .......................................................................... 33
44. Storing Wood .................................................................................... 33
45. Processed Solid Fuel Fire logs .......................................................... 33
46. First Fire ............................................................................................. 33
47. Lighting Instructions ......................................................................... 34
48. Ash Removal ...................................................................................... 34
49. Log Grate Inspection ......................................................................... 34
50. Glass Cleaning ................................................................................... 34
51. Refractory/Firebrick Inspection........................................................ 34

Ventis Forever Firebox – OCV-RR-36/42 – 07-10-2020 rev4 3
1. General Product & Safety Information
The quality and workmanship of Olympia
Chimney & Venting’s Forever Firebox (OCV-RR-
36/42) is reflected in the recognition
Underwriters Laboratories has given these
products. The rigorous UL testing and listing
requirements is your assurance of consistent
quality in materials and manufacturing standards
used for this appliance.
This Fireplace is Listed by UL to UL127 for
installation and operation in the Unites States.
The Fireplace must be installed, by a qualified
professional, according to these installation and
maintenance instructions. Read through and
become familiar with these installation
instructions before installing this product.
Failure to follow these instructions may void the
manufacturer’s warranty, the UL listing status of
this product, and may result in a hazardous
installation.
Keep these instructions for future reference.
WARNING! RISK OF FIRE!
The following actions will cause
Olympia Chimney & Venting to void
the warranty and listing.
DO NOT
• Install or operate a damaged fireplace.
• Modify this fireplace in any way.
• Install the fireplace in a way that does not
follow this manual.
• Over fire the fireplace.
• Install venting that is not listed with this
fireplace.
NOTICE:
• Illustrations and images reflect typical
installations and are for design intents only.
• Diagrams are not drawn to scale.
• Actual installation/appearance may vary due
to individual design preference.
• Olympia Chimney & Venting reserves the
right to alter its products.
2. Design & Installation Considerations
Check building codes prior to installation
Installation must comply with local, regional,
state, and national building codes and
regulations.
Consult your insurance carrier, local building
inspector, fire official or authority that has
jurisdiction over restrictions, installations,
inspections, and permits.
Prior to installation, determine the following:
• Where the fireplace is to be installed.
• The vent configuration that will be used.
• Gas supply piping if necessary.
• Framing details.
NOTE: A raised hearth extension-built level with
the fireplace opening or less than 4 inches
below the fireplace opening requires the
fireplace to be installed on a non-combustible
surface.

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3. Fireplace Location Selection
This fireplace can be installed as a room divider, across a corner wall, along a standard wall, or in an
exterior chase or projecting into a garage.
Figure 1.1 shows the 4 installation examples from above with framing dimensions
Note: Measurements are framing dimensions only and do not include drywall in either the cavity of on
the interior walls.
Model Units A B C D E F G H I
OCV-RR-36 inches 42 50 67-7/8 59-1/2 34 14 48 21-1/2 12 in. (305 mm)
Min from fireplace
opening to any
perpendicular wall.
mm 1067 1270 1724 1511 864 356 1219 546
OCV-RR-42 inches 48 56 73-7/8 65-1/2 37-1/4 17 52-1/4 21-1/2
mm 1219 1422 1876 1664 946 432 1327 546
Locating the fireplace near frequently opened doors, a central heat outlet or other areas that have
considerable air movement can affect the fireplace performance.
Please take these factors into consideration prior to deciding on a location.
*8” of extra space required for optional
outside air connection. If no outside air
is being used, ½ in. minimum clearance
to fireplace sides is to be maintained.

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4. Fireplace & Chimney Location
Location of the fireplace will affect performance.
• Install within the warm airspace enclosed by the building envelope as this will help to produce draft.
• Installing the fireplace in a basement is not recommended.
• Endeavor to penetrate the roof at its highest point as this will minimize wind loading.
• Locate the Chimney Termination Cap away from trees, adjacent walls or buildings, other structures,
uneven roof lines or obstructions.
• Minimize the use of offsets (elbows).
• Take into consideration the attic joists when selecting a space for the fireplace.
• Avoid installing the fireplace near doors or walkways.
• Take into consideration the chimney termination requirements in the chimney section of this manual.
5. Equipment, Tools, & Hardware
6. Inspect the Fireplace & Components
WARNING! RISK OF FIRE
AND/OR EXPLOSION!
DO NOT install damaged,
incomplete, or substitute components as this
can affect the fireplace’s safe operation.
• Inspect the fireplace and its components for
damage.
• Report any damaged components directly to
your dealer.
• Read all these instruction prior to starting the
installation.
Use of any parts or materials not specified in this
installation manual may not provide a listed
system and may void the warranty. Do not
attempt matching components with another
manufacturer’s products. Do not use damage or
modified parts.
7. Fireplace System
This fireplace system requires the following
items:
• Refractory Panels (3) - included
• Refractory Bricks (18) – included
• Refractory Brick Base - included
• Fire screen – included
• Stainless Steel Grate – included
• Protective Hearth Strips – included
• 8” Ventis Class-A Pipe – sold separately
• Ventis Attic insulation shield – sold separately
• Ventis Firestops – sold separately
• Ventis Termination Cap – sold separately
Tools
:
Reciprocating Saw Plumb Bob
Keyhole Saw Level
Drill Tape Measure
Hammer Caulk Gun
Metal Snips Screwdrivers
Equipment:
Ladder
Safety Glasses
Protective Gloves
Hardware:
#8-1 ½” & 2 ½” Screws
Framing Nails
Roofing Nails
High-Temp Sealant
Silicone Sealant

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8. Safety Considerations
Caution: The ends of the chimney
sections, edges of the cap, roof flashings,
and other components can be sharp! We strongly
recommend the use of gloves during installation.
Warning: Watch out for overhead
power lines during installation. Be sure
to check above and around the chimney for
antennas, power lines, or any other obstacles
before beginning the installation. Be sure that
the chimney does not come into contact with
electrical or any other wires.
Warning: Do not block air circulation
vents on either side of the fire chamber.

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9. Fireplace Dimensions
Model A B C D
OCV-RR-36 35-5/8 41 23-7/8 11-15/16
OCV-RR-42 41-5/8 47 29-7/8 14-15/16

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10. Clearances
You must comply with all minimum air space clearances to combustibles shown in figure 3.2. Do not add insulation
or other materials to required airspaces. Framing or finishing material that is closer than the minimum listed
measurement must be constructed of a non-combustible material (Steel studs, concrete board, etc.) Failure to
comply may cause a fire.
Minimum Clearance to Combustibles
Within Enclosure Area
Fireplace to backwall ½”
Fireplace to sidewall ½”
Stand-offs on top to the header 0”
Door opening to side wall 12”
Fireplace opening to combustible materials 48”
Mantel
Minimum Mantel Height 12”
Maximum Mantel Depth 12”
Minimum Mantel Width (OCV-RR-36) 41-5/8”
Minimum Mantel Width (OCV-RR-42) 47-5/8”

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11. Chase Construction
A chase is a vertical structure built to enclose the
fireplace and venting system. Vertical chimneys
that run on the outside of a building must be
installed inside a chase. Local Building Codes must
be checked.
In cold climates it is recommended to insulate the
chase. The chase should be constructed in the
manner of all outside walls of the home to prevent
cold air drafting problems. The chase should not
break the outside building envelope in any manner.
All outer walls must be insulated.
Building codes require a false ceiling and firestop
at each floor of the chase or every 10 feet of clear
space to control the spread of fire. Walls ceilings,
and base plates at the first floor should be
insulated (figure 3.3). Vapor and air infiltration
barriers should be installed in the chase as per
regional codes. Holes and other openings should
be caulked or filled with insulation.
WARNING!
You must install false ceilings and
firestops at each floor of the chase
or every 10 feet to control the spread of fire.
WARNING! RISK OF FIRE
DO NOT seal the area between the
firestop opening and the chimney pipe.
A chase is constructed using framing and siding
materials. The factors below must be
considered before building the chase.
 Maintain a 2-inch clearance around the
chimney pipe.
 The chase top must be constructed of a
noncombustible material.
 In cold climates the walls of the chase
should be insulated to the level of the false
ceiling. This will help reduce heat loss from
the home around the fireplace.
WARNING! RISK OF FIRE.
You must maintain a 2-inch air space clearance
to insulation and other material surrounding
the chimney system.
• Insulation in the chase must be firmly secured
to prevent accidental contact with the
chimney pipe.
• Openings must be blocked to prevent blown
insulation from entering and making contact
with the fireplace or chimney pipe.
• Failure to prevent contact between insulation
or other material and the chimney system
may cause overheating and fire.

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*Header height to be adjusted for a raised floor beneath the fireplace
**If interior of chase will be drywalled, add drywall thickness to dimension
C = Extra space required for optional
outside air connection. If no outside air
is being used, ½ in. minimum clearance
to fireplace sides is to be maintained.
12. Framing the Fireplace
Notice: Hearth extension design must be
determined before installing the fireplace.
If the fireplace is placed on the floor, the
maximum height of a finished raised hearth is
7-3/16”. If you want a higher raised hearth, the
fireplace must be placed on a platform.
WARNING! RISK OF FIRE.
A raised hearth extension-built level with the
fireplace opening or less than 4” below the
fireplace opening requires the fireplace to be
installed on a non-combustible surface.
WARNING! RISK OF FIRE.
Comply with all minimum clearance specifications.
• A minimum ½” air clearance must be
maintained at the back and sides of the
fireplace.
• All chimney sections require a 2-inch air space
clearance between the framing and the
chimney pipe.
WARNING! RISK OF FIRE.
You must comply with all minimum air space
clearances to combustibles. Do Not pack
required air spaces with insulation or other
materials.
Figure 3.4 shows a typical framing of the fireplace.
All required clearances around the fireplace must be
maintained. Any framing across the top of the
fireplace must be above the level of the stand-offs.
The finished cavity depth must be no less than 20-
7/8” from the backwall to the outside of the front
wall framing.
Model A B** C
OCV-RR-36 42 20-7/8 8
OCV-RR-42 48 20-7/8 8

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13. Mount & Level the Fireplace
This fireplace may be placed on either a combustible or noncombustible continuous flat surface. After
framing, slide the fireplace into position. Be certain to provide the minimum ½” air clearance at the
sides and back of the fireplace
The fireplace should be positioned so the face of the non-combustible material on the fireplace will be
flush with the face of the drywall on the walls.
WARNING! RISK OF FIRE.
Prevent contact with sagging loose insulation.
• DO NOT install against vapor barriers or exposed insulation.
• Ensure that that all insulation and vapor barrier are secured tightly.
• Ensure the required air space to combustibles are maintained at the sides and back of the fireplace.
14. Metal Hearth Strips
WARNING! RISK OF FIRE.
Metal hearth strips must be installed on
combustible materials. Do not cover the
hearth strips with any combustible
materials.
WARNING! RISK OF FIRE.
High temperatures, sparks, embers, or
other burning material falling from the
fireplace may ignite flooring or
concealed combustibles surfaces.
• Hearth extensions must be installed
exactly as specified.
• Metal Hearth Strips must be installed.
• Locate the two metal hearth strips
that were shipped with the fireplace.
• Slide each strip about 2” under the
front edge of the fireplace.
• Overlap the strips by 1” minimum.
• The metal strips must extend past the
front and sides of the fireplace by 2
inches. (see figures 7.1 and 7.2)

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15. Chimney Requirements
Vertical distances are measured from the base of the fireplace as shown in figure 9.1.
Figure 9.1
Minimum Straight height 12 feet
Minimum height with offset 14 feet
Maximum distance between chimney supports 8 feet
Maximum height 40 feet
Maximum unsupported chimney height above the roof 5 feet
Maximum distance between elbows 72 inches

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16. Optional Offset/Elbow Installation
Since a completely vertical chimney provides optimal draft it is best to avoid elbows if possible. However, when
elbows are necessary to avoid obstructions such as joists, rafters, etc. use no more than two pairs of elbows (total
of four elbows) and do not exceed a maximum angle of 30 degrees or one set (total of 2 elbows). Refer to Table
2 to determine what elbows and chimney sections will be needed for the required offset.
Lengths
Between Elbows
15 Degree 30 Degree
Rise Offset Rise Offset
0” 9 ½” 1 ¼” 11 ¼” 3”
12” 19 ½” 4” 20” 8”
18” 25 ¼” 5 ½” 25 ¼” 11”
24” 31” 7” 30 ½” 14”
36” 42 ½” 10” 40 ¾” 20”
48” 54 ¼” 13 ¼” 51 ¼” 26”
48” + 12” 64 ¼” 16” 60” 31 ¼”
48” + 18” 70” 17 ½” 65 ¼” 34 ¼”
48” + 24” 75 ¾” 19” 70 ½” 37 ¼”

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17. Termination Requirements
 Install a termination cap that has been approved and listed for this fireplace system.
 Locate the cap where it will not become clogged by snow or other materials.
 Locate the cap away from trees or other structures.
 The bottom of the chimney cap must be at least 3 feet above the roof and at least 2 feet above
any portion of the roof within 10 feet.
18. Chimney Installation
 Secure the first chimney section to the anchor plate mounted to the top of the fireplace.
 Continue installing the sections upwards using a minimum of three, #8 x ½” self-drilling screws
per joint. Never use over-length screws that could penetrate the inner lining of the chimney.
 The final chimney height should be determined using the specifications in Section 8

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19. Firestops
WARNING! RISK OF FIRE
Ceiling firestops must be used whenever
the chimney penetrates a ceiling/floor.
• Chase construction requires ceiling firestops at
each floor or every 10 ft. of clear space.
• Ceiling firestops slow the spread of fire and
reduces cold air infiltration.
Install a Firestop Radiation Shield at each floor
penetration above the ceiling support including
the opening into the attic.
• The Firestop Radiation Shield is installed
from the bottom of the ceiling/floor rough
opening with the tube section of the Firestop
pointing upwards.
• Secure the Firestop to the rough opening
with a minimum of one 8-penny nail or one
#8 x 1 ½” wood screw at each corner. Adjust
the inner tube of the firestop upward to
cover all framing of the floor/ceiling rough
opening. See Figure 11.1
• Secure the inner tube to the outer tube using
at least three sheet metal screws.
Note: In the attic opening, a Firestop and an
attic insulation shield extension will be used. A
Firestop is not to be installed at the roof
penetration.
Figure 11.1
20. Attic Insulation Shield
The purpose of Attic Insulation Shielding is to
maintain the required 2-inch air space clearance
from debris, electrical wiring and insulation
when the chimney passes into an attic.
Use this method when a Firestop has been
installed in the ceiling below the attic floor.
 In the attic, center the Attic Insulation Shield
over the round ceiling support rough framed
opening.
 Secure the four corners of the Shield into the
rough framed opening with four 8-penny
nails or four #8 x 1 ½” screws.
 Once the chimney sections are in place, a
storm collar will be fitted around a chimney
section. Slide the storm collar down to fit
against the Attic Insulation Shield. This
prevents debris from entering the cavity
between the chimney and the Attic Insulation
Shield.
Attic shielding enclosures:
In certain attic scenarios, typically low attic
installations, where the Attic Insulation Shield
will not fit, you must enclose the attic portion of
the chimney in a framed enclosure. The chimney
within the enclosure must maintain the required
2-inch air space to combustibles.
Figure 12.1

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21. Complete the Top Termination
Ensure that a 2-inch air space clearance to
combustibles is maintained as the chimney passes
through the roof opening. It is recommended on
steep roof slopes or when the chimney height
above the roof exceeds 5 feet, that a roof support
bracket is used to assist in stabilizing and leveling
the chimney.
 Using a level, make sure the chimney is
vertically plumb.
 Slide the roof flashing over the chimney and
place the flashing under the upper shingles and
on top of the lower shingles. Nail the flashing
to the roof along the upper edge and down
each side with 1-inch roofing nails, but do not
nail the lower edge. Seal the nail heads with a
water-proof silicone sealant.
 Install a storm collar around the chimney and
slide down to fit against the roof flashing.
Caulk the joint between the chimney and the
storm collar with a waterproof silicone sealant.
Note: Do not caulk or seal the ventilating
openings of a ventilated flashing.
 Fit the rain cap to the top of the chimney.
Attach by tightening the clamp band.
22. Chase Installation
A chase enclosed chimney: For installing the
chimney system in a chase application, the
chimney must extend a minimum of 6-inches above
the chase cover. Please ensure that the chimney
exterior has the required 2-inch air space
clearance from all chase enclosure combustibles
including the hole in the chase enclosure top
sheathing. The chase enclosure top can be finished
using either standard flat roofing materials or a
custom fabricated metal chase cover.
Note 1: It is recommended, in colder climates, that
exterior mounted chimney systems are enclosed to
help reduce or limit condensation, creosote build-
up and poor draft.
Note 2: It is recommended to provide some means
of chase enclosure ventilation. This is usually
accomplished by placing the storm collar
approximately 2 inches above the chase collar.
23. Finishing the Fireplace
WARNING! RISK OF FIRE
You must maintain clearances to
combustibles.
 Do not cover the metal on the fireplace front
with combustible materials.
 Install combustible materials only to
specified clearances on the top and sides of
the fireplace.
 Do not place combustible framing material
below the stand-offs on the top of the
fireplace.
 Complete the framing and install drywall over
the framing.
 Facing material can be installed right against
the metal face and metal columns of the
fireplace.
 Use a bead of 400°F non-combustible sealant
to close the gaps around the top and sides of
the fireplace.
Olympia Chimney and Venting is not responsible
for discoloration, distortion, cracking, or other
material failures of finishing materials due to
heat or smoke.

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24. Hearth Extensions – Building & Finishing
WARNING! RISK OF FIRE.
High temperatures. Sparks, embers,
or other burning material falling from
the fireplace may ignite flooring or other
combustible surfaces.
WARNING! RISK OF FIRE.
A raised hearth extension-built level with
the fireplace opening or less than 4”
below the fireplace opening requires the fireplace to
be installed on a non-combustible surface.
 You MUST use a hearth extension with this fireplace.
 Hearth extensions must be installed exactly as specified.
 A heart extension must be installed with all fireplaces to protect the combustible floor in the front
of the fireplace from both radiant heat and sparks.
 This fireplace has been tested and approved with ½” Durock (See material factors below) or
equivalent as the hearth extension material.
 The hearth extension material must be covered with stone, tile, or other non-combustible material.
 Refer to figure 16.1 for required dimensions.
Model A B C D
OCV-RR-36 35-5/8 51-5/8 8 16
OCV-RR-42 41-5/8 57-5/8
Material k per
inch
r per
inch
c per
inch
Minimum
thickness
required
Durock 1.92 .52 2.54 .500 in.

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25. Hearth Extension 4” or more Below Fireplace Opening
26. Hearth Extension Less Than 4”
Below Fireplace Opening
The hearth framing must be constructed of non-
combustible materials (such as metal framing or
equivalent materials) and placed on ½” Durock or
equivalent material. See Figures 7.4 and 7.5.
When building the platform, account for the
thickness of the non-combustible finishing
materials.
Seal gaps between the hearth extension and the
front of the fireplace with a bead of non-
combustible sealant or grout.

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27. Fireplace Opening & Hearth
Extensions Flush with the Floor
Non-combustible flooring a minimum of 20
inches in front of the fireplace and 12 inches past
each side of the fuel opening is required.
The hearth framing must be constructed of non-
combustible materials (such as metal framing or
equivalent material.
• When creating the platform, allow for the
thickness of the non-combustible finishing
material. See Figure 16.4
• Seal the gaps between the hearth extensions
and the front of the fireplace with a bead of
non-combustible sealant or grout.
28. Non-Combustible Sealant Material
After completing the framing and applying the
facing materials over the framing. A bead of non-
combustible sealant must be used to close off
any gaps at the top and sides between the
fireplace and hearth.

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29. Mantel & Wall Protection
The combustible mantel may have a depth of 12
inches when positioned 12 inches above the
fireplace opening Combustible trim pieces that
project no more than 1-1/2” from the face of the
fireplace can be placed no closer than 6 inches
from the top of the decorative front. (See Figure
16.7) Combustible trim must not cover:
• The metal surfaces on the fireplace.
• The space between the metal face of the
fireplace and the framing.
• Where the non-combustible board is placed
over metal surfaces.
WARNING! RISK OF FIRE.
You must seal around the finishing
material to the fireplace.
WARNING! RISK OF FIRE.
Olympia Chimney & Venting is not
responsible for discoloration,
cracking or other material failures of finishing
materials due to heat exposure or smoke.
• Choose finishing materials carefully!