Osburn Designer DV36 User manual

OSBURN DV36
Designer Series
Built-In Direct Vent Gas Fireplace
Installation and Operation Instructions
The Flame of Desire
Made in Canada DV1037
02/05/07

Thank you for choosing to purchase the Osburn DV36 Designer Series Zero Clearance Fireplace. Your
decision will be rewarded with many years of heating comfort and unparalleled ambience. The DV36
has been meticulously designed and engineered to provide a unique combination of flame and efficiency.
The staff and employees at Osburn take great pride in the quality of our work and are dedicated to
innovation. We wish to congratulate you on your choice of our team’s most recent addition to our
family of product.
The following material contains information and instructions on how best to install and operate the
Osburn DV36. Please read this entire manual carefully before the unit is installed. Failure to follow the
instructions may result in property damage, bodily injury, or loss of life. Proper installation and
operation will be rewarded with unsurpassed operation and heating attributes.
WARNING: If the information in this manual is not followed exactly, a fire or explosion may result causing
property damage, personal injury or loss of life.
Do not store or use gasoline or other flammable vapours and liquids in the vicinity of this or any other appliance.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any phone in your building.
• Immediately call your gas supplier from a neighbour’s phone. Follow the gas supplier's instructions.
• If you cannot reach your gas supplier, call the fire department.
A qualified installer, service agency or the gas supplier must perform installation and service.
WARNING
Improper installation, service, adjustment, alteration, or maintenance can cause injury or property damage. Refer to
this manual. For assistance or additional information, consult a qualified installer, service agency, or the gas supplier.
This appliance may be installed in an aftermarket
p
ermanently located, manufactured (mobile) home, where
not prohibited by local codes.
This appliance is only for use with the type of gas indicated
on the rating plate. This appliance is not convertible for use
with other gases, unless a certified is used.
Please read this manual before installing or using this appliance. Retain this manual for future reference.

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TABLE OF CONTENTS
1. Introduction.................................................................................................................................................. 1
1.1 Specifications ..................................................................................................................................... 2
1.2 Features............................................................................................................................................... 2
1.3 Intended Use ....................................................................................................................................... 2
1.4 General Safety..................................................................................................................................... 2
2. Operation ...................................................................................................................................................... 3
2.1 Safety .................................................................................................................................................. 3
2.2 Lighting Instructions........................................................................................................................... 3
2.3 Heat Output Adjustment ..................................................................................................................... 4
2.4 Fan Operation (Optional) ................................................................................................................... 5
2.5 Remote Control Operation.................................................................................................................. 5
3. Installation .................................................................................................................................................... 6
Installation & Safety Notes........................................................................................................................... 6
Unpacking..................................................................................................................................................... 6
Fireplace Installation..................................................................................................................................... 6
3.1 Locating the Fireplace......................................................................................................................... 6
3.2 Installation of Flooring and Framing .................................................................................................. 7
3.3 Installing the Vent System.................................................................................................................. 9
3.4 Vent Terminal Locations................................................................................................................... 12
3.5 Mantels.............................................................................................................................................. 13
3.6 Gas Line Installation......................................................................................................................... 13
3.7 Thermostat, Wall Switch, or Remote Control Installation................................................................14
3.8 Wiring Connections .......................................................................................................................... 15
3.9 ... Log Set Installation .......................................................................................................................... 15
3.10 Initial Firing ...................................................................................................................................... 16
3.10.1 Manifold Pressure Regulator Adjustment............................................................................ 16
3.10.2 Pilot Flame Adjustment ....................................................................................................... 16
3.10.3 Initial Firing......................................................................................................................... 17
3.10.4 Altitude Adjustment............................................................................................................. 17
4. Maintenance............................................................................................................................................... 20
4.1 Maintenance Safety........................................................................................................................... 20
4.2 Recommended Service...................................................................................................................... 20
4.3 Glass Cleaning .................................................................................................................................. 20
Door Removal................................................................................................................................... 20
4.4 Burner Removal and Servicing......................................................................................................... 22
4.5 Gas Valve Removal and Servicing (Including Pilot Assemblies) .................................................... 22
4.5.1 Complete Assembly Removal.............................................................................................. 23
4.5.2 Pilot Assembly Removal Only............................................................................................. 23
4.5.3 Pilot Assembly Servicing Only............................................................................................ 23
4.6 Primary and Secondary Air Adjustment........................................................................................... 24

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5. Accessories .................................................................................................................................................. 25
5.1 Porcelainized Combustion Chamber Panels ..................................................................................... 25
5.1.1 Installation............................................................................................................................ 25
5.1.2 Cleaning............................................................................................................................... 26
5.2 Refractory Brick Combustion Chamber Panels................................................................................ 27
5.2.1 Installation............................................................................................................................ 27
5.3 Room Air Supply Fan ....................................................................................................................... 28
5.3.1 Installation............................................................................................................................ 28
5.3.2 Operation.............................................................................................................................. 29
5.4 Hot Air Duct Kit ............................................................................................................................... 30
5.4.1 Installation............................................................................................................................ 31
5.4.2 Operation.............................................................................................................................. 32
6. Trouble Shooting........................................................................................................................................ 33
7. Replacement Parts...................................................................................................................................... 36
8. Warranty..................................................................................................................................................... 38
9. Label Information ...................................................................................................................................... 40

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List of Figures
Figure 2.1 Control Panel Features................................................................................................................... 5
Figure 3.1 Space Requirements....................................................................................................................... 7
Figure 3.2 Fireplace Framing Dimensions ...................................................................................................... 8
Figure 3.3 Installation as a Rear Vent ............................................................................................................. 8
Figure 3.4 Fireplace Dimensions..................................................................................................................... 8
Figure 3.5 Allowable Vent Lengths .............................................................................................................. 10
Figure 3.6 Determining Allowable Vent Configurations – Example 1......................................................... 11
Figure 3.7 Determining Allowable Vent Configurations – Example 2......................................................... 11
Figure 3.8 Vent Terminal Locations.............................................................................................................. 12
Figure 3.9 Mantel Clearances........................................................................................................................ 13
Figure 3.10 Front View of Log Set ................................................................................................................. 15
Figure 3.11 Top View of Log Placement ....................................................................................................... 15
Figure 3.12 Pilot Flame .................................................................................................................................. 16
Figure 3.13 Flame Adjustment........................................................................................................................ 17
Figure 4.1 Top Louver Assembly Removal .................................................................................................. 21
Figure 4.2 Glass Door Removal.................................................................................................................... 21
Figure 4.3 Burner Removal........................................................................................................................... 22
Figure 4.4 Orifice Well Cover....................................................................................................................... 24
Figure 4.5 Primary Air Adjustment............................................................................................................... 24
Figure 4.6 Secondary Air Adjustment........................................................................................................... 24
Figure 5.1 Installation of Left and Right Porcelain Panels............................................................................ 25
Figure 5.2 Installation of Rear Porcelain Panel............................................................................................. 26
Figure 5.3 Installation of Refractory Panels.................................................................................................. 27
Figure 5.4 Lower Louver Removal ............................................................................................................... 28
Figure 5.5 Lower Trim Removal................................................................................................................... 28
Figure 5.6 Fan Installation............................................................................................................................. 28
Figure 5.7 - Fan and Thermal Switch Wiring.................................................................................................. 29
Figure 5.8 - Possible Air Duct Runs / Locations ............................................................................................. 30
Figure 5.9 Duct Collar Assembly Installation............................................................................................... 31
Figure 5.10 Mounting..................................................................................................................................... 31
Figure 5.11 Wiring Diagram ........................................................................................................................... 32
List of Tables
Table 1.1 Specifications................................................................................................................................. 1
Table 3.1 Minimum Clearances from the Fireplace to Combustible Materials ............................................. 6
Table 3.2 Thermostat Wire Lengths............................................................................................................. 14
Table 3.3 Altitude Adjustment by Changing Orifice
(Natural Gas Only At 3.8” W.C. Manifold Pressure) ................................................................ 18
Table 3.4 Altitude Adjustment by Changing Orifice
(Propane/LP Gas Only At 10” W.C. Manifold Pressure) .......................................................... 19
Table 7.1 Replacement Parts List ................................................................................................................ 32

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Introduction
1.1 Specifications
Table 1.1 Specifications
Item Natural Gas (NG) Propane (LPG)
Input: High 40,000 Btu/Hr (42.2 MJ/Hr) 31,600 Btu/Hr (31.7 MJ/Hr)
Low 20,000 Btu/Hr (21.1 MJ/Hr) 22,500 Btu/Hr (23.7 MJ/Hr)
78.0 % 77.0 %
Flue Loss Efficiency*:
Fan
Off
79.0 %
78.5 %
Manifold Pressure:
3.8" w.c. (0.9 Kpa) 10.0" w.c. (2.5 Kpa)
Minimum: 5.0" w.c. (1.2 Kpa) Minimum: 11.0" w.c. (2.7
Kpa)
Normal: 7.0" w.c. (1.7 Kpa) Normal: 13.3" w.c. (3.3 Kpa)
Gas Inlet Supply Pressure:
Maximum: 13.5" w.c. (3.4 Kpa) Maximum: 13.5" w.c. (3.4
Kpa)
Orifice Size: 31 DMS (.120") (3.05 mm) 51 DMS (.067") (1.70 mm)
Control Valve: Sit 820 Nova
Shipping Weight: 185 Lb. (84 Kg)
Simpson Duravent Model DV-GS
Chimney:
Optional Double-Walled Co-Axial Flex (Max 6 Ft)
* The efficiency rating of the appliance is a product thermal efficiency rating determined under continuous
operating conditions and was determined independently of any installed system.
Options: Standard Remote Control Single Blower @ 120 cfm
Deluxe Remote Control Fibre Brick Panels
Decorative Bay Window Kit Porcelain Panels
Decorative Flush Front Hot Air Ducting Kit
Thermostat
Approvals and Installation Codes
Installation must conform to local codes. In the absence of local codes, installation must conform to the
National Fuel Gas Code, ANSI Z233.1 1988, (in the U.S.), or with the current installation code CAN/CGA
B149.1-M86 (in Canada). The appliance, when installed, must be electrically grounded in accordance with
local codes or, in the absence of local codes, with the National Electric code ANSI/NFPA No. 70-1990 (in the
U.S.) or with the current CSA C22.1 Canadian Electrical code (in Canada).

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High Altitude Installations
Canada: This appliance has been certified and approved for elevations of up to 4500 feet. For higher elevations
the unit must be de-rated (see section 3.10.3 - Altitude Adjustment)
USA: This appliance should be de-rated 4% for every 1000 feet above 2000 feet above sea level.
1.2 Features
Ignition system:
Standing pilot ignition system with thermopile and thermocouple flame detection and piezo igniter.
Gas control:
Automatic millivolt powered combination gas control valve with optional remote on/off switch, optional
wall thermostat, and/or optional remote control. The gas valve does not require electricity.
Fan with Variable Speed Control (Optional):
A knob controls the fan speed in connection with a heat sensitive switch, which turns on when the heater
reaches operating temperature. Turning the knob counter-clockwise turns it to the "OFF" position.
Safety controls:
A safety switch will shut the system down in the event of loss of pilot flame.
Outside combustion air supply:
The combustion air supply is obtained entirely from outside the heated living space by the intake of outside
air through the outer portion of the 6-5/8" coaxial double wall vent pipe. Exhaust gases pass through the
inner portion of 4" pipe.
1.3 Intended Use
This appliance is intended to be used as a heater, when installed as a built-in fireplace, according to minimum
requirements as described in detail in the installation instructions. This appliance is suitable for installation in
bedrooms of 2000 cubic feet or more. The appliance is also suitable for retrofit into mobile homes.
1.4 General Safety
The appliance must be properly connected to a venting system in accordance with local codes. This unit must
not be connected to a chimney or flue serving any other appliance.
WARNING: Operation of this fireplace when not connected to a properly installed and maintained venting
system may result in carbon monoxide poisoning.
Installation and repair should be done by a qualified service person. A professional service technician should
inspect the appliance before use and at least annually. Provide adequate clearances around air openings and
allow accessibility clearance for servicing and proper operation.

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2
. Operation
2.1 Safety
Inspect the appliance before use. Always keep the appliance area clear and free from combustible materials,
gasoline and other flammable vapours and liquids. Never obstruct the flow of ventilation air. Keep the front of
the appliance clear of all obstacles and foreign materials.
WARNING: If you do not follow these instructions exactly, a fire or explosion may result causing property
damage, personal injury or loss of life.
CAUTION: Children and adults should be alerted to the hazards of high surface temperature and should stay
away to avoid burns or contact with hot surfaces. Young children should be carefully supervised
when they are in the same room as the heater. Clothing or other flammable material should not be
placed on or near the unit.
The glass door and louvers must be properly installed prior to operation. Never operate the unit with the glass
door off or with broken or cracked glass since this may cause dangerous indoor air pollution. Replacement of
the glass panels should be done by a licensed or qualified service person. This unit is not for use with solid
fuel. Do not substitute any parts or materials. Do not abuse the glass door.
2.2 Lighting Instructions
FOR YOUR SAFETY, READ BEFORE LIGHTING
A. This appliance is provided with a standing pilot flame. When lighting the pilot, follow these
instructions exactly:
B. BEFORE LIGHTING smell all around the appliance area for gas. Be sure to smell next to the floor because
some gas is heavier than air and will settle on the floor.
WHAT TO DO IF YOU SMELL GAS
* Do not try to light any appliance.
* Do not touch any electrical switch: do not use any phone in your building.
* Immediately call your gas supplier from a neighbour's phone. Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire department.
C. Use only your hand to push in or turn the gas control knob. Never use tools. If the knob will not push in or
turn by hand, do not try to force or repair it, call a qualified service technician. Forcing or attempted repair
may result in a fire or explosion.
D. Do not use this appliance if any part has been under water. Immediately call a qualified service
technician to inspect the appliance and to replace any part of the control system and any gas control
that has been under water.

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LIGHTING PROCEDURE
1. "STOP!" Read the safety information in the previous section.
2. Set the thermostat to the lowest setting.
3. Turn off all electrical power to the appliance.
4. Open the access door grille, hinged to open downward, by pulling the top grille bar toward you.
5. Push in the gas control knob slightly and turn counter-clockwise to the "OFF" position (Figure 2.1).
6. Wait a minimum of five minutes to clear out any residual gas. If you then smell gas, STOP!Follow "B"
in the Lighting Instruction section described on the previous page. If you don't smell gas, go to the
next step.
7. Press in the valve knob and turn clockwise to the "PILOT" position.
8. Push in the control knob all the way and hold it in. Immediately push the piezo ignition button (the red
button to the left) repeatedly so that it clicks. Continue until the pilot ignites. Maintain pressure on the
control knob for about one minute after ignition. Then release the control knob; if the pilot flame goes
out repeat step 8; if the pilot flame remains on then turn the valve knob clockwise to the "ON" position.
9. If the pilot lights but will not stay on after several tries, turn the gas control knob to the "OFF" position
and call your service technician or gas supplier. If the control knob does not pop out when released,
STOP!Shut off the gas supply to the control valve, and IMMEDIATELY call your service technician or
gas supplier.
10. Turn the burner control switch to " ON".
11. Close the access door grille by lifting it and allow the springs to pull it closed.
12. If equipped with a wall switch, select the " ON" position. If equipped with a thermostat or auxiliary
control, set it to the desired setting.
SHUTDOWN PROCEDURE
1. To turn off the main burner only, turn off the wall switch, thermostat, or On/Off switch located behind
the access grille.
2. For complete shutdown of the appliance, depress the valve control knob and turn it counter-clockwise
to the "OFF" position.
2.3 Heat Output Adjustment
The valve supplied with the appliance has a HI/LOknob, which may be used to adjust the heat output and
flame height. The HI/LOknob may be accessed by opening the lower grilles and rotating the adjustment knob
between its’ two extremes (see Figure 2.1).
NOTE:Adjustment of the knob may be done with the appliance in either the on or off configurations.

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Figure 2.1 – Control Panel Features
2.4 Fan Operation (Optional)
For units which have had an optional air supply fan installed, the fan control knob is located behind the access
door grille assembly and may be adjusted to the following settings:
OFF: Turn the control fully counter-clockwise.
VARIABLE SPEED SETTING (ON): Turn the control knob to the desired setting. When the knob is turned
fully clockwise, the fan will be on low speed.
2.5 Remote Control Operation
An optional hand held remote control kit for turning the unit ONand OFF, is also available. Detailed
instructions for the optional Remote Control are included with the kit.

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3. Installation
Installation & Safety Notes
Read all instructions before beginning and follow them carefully during installation to ensure maximum
benefit and safety. Failure to follow these instructions will void your warranty and may present a fire hazard.
See the Osburn warranty at the back of this manual for improper installation disclaimers. This fireplace and its
components are certified and safe when installed in accordance with this manual.
WARNING: Do not connect 120 VAC to the gas control valve or its wiring, as this will damage the valve.
Unpacking
The fireplace is packaged with the logs and ember medium inside the firebox. The louvre assemblies and trim
options are separately packaged.
Report to your dealer any parts that may have been damaged in shipment (specifically check the condition of the
glass).
Please note: Final installation of the logset/ember and (optional) combustion chamber panels should only be
done after the unit has been completely positioned and framed. It is further recommended that the vent system,
gas line connection, and ideally any electrical servicing requirements be similarly completed before proceeding
with the final placement of the ember medium. Hearth and mantel configurations are also best completed
beforehand. This will prevent accidental jarring and displacement of the ember medium and allow for visual
assessment of the completed package as the consumer will receive it. Trim and louvre kits should be installed
last.
Fireplace Installation
This fireplace is suitable for installation in new construction and wood framed enclosures.
NOTE:All Installations Require Venting.
3.1 Locating the Fireplace
The first step for installing the fireplace is to determine the final location of the appliance. The installation
constraints are provided in Figure 3.1 and Table 3.1.
Table 3.1 Minimum Clearances from the Fireplace to Combustible Materials
Glass Front Floor Back Top Ceiling Perpendicular
Wall
48” 0” 0” 0”
72” *12”
* As measured from the bottom of the unit.

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Figure 3.1 - Space Requirements
3.2 Installation Of Flooring & Framing
CAUTION: Due to high temperatures, this room heater should be located out of traffic and away from
furniture and draperies. Provide a minimum of 48" (1220mm) front clearance to the unit.
Framing the fireplace
1. The fireplace may be installed directly on and/or against standard combustible building materials.
2. The recommended framing dimensions are presented in Figures 3.2 and 3.3. The enclosure for the
fireplace should be framed with standard framing material Please note that the framing height is to the
top of the standoffs; for rear vent applications the framing height 2” above the top of the inlet pipe is
46-1/8” (Figure 3.4).
3. For exterior walls, install a vapour barrier and insulate the enclosure to the same degree as the rest of
the house, or according to local installation codes. In colder climates, if the unit is to be installed
against an exterior wall or chase, insulate the exterior walls according to local installation codes.
Note: For horizontal terminations allow for a minimum of 2" of clearance from the top of the vent to
combustibles.

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Figure 3.2 Fireplace Framing Dimensions
Figure 3.3 Installation as a Rear Vent
Figure 3.4 Fireplace Dimensions

/9
3.3 Installing the Vent System
The DV36 has been approved with two vent systems. For vent systems in excess of 6 (six) feet in total length,
Simpson Duravent DV-GS components must be exclusively used. For vent systems of 6 feet or less, use of a
listed double walled flexible aluminium co-axial vent pipe is permitted, but only in conjunction with Simpson
Duravent vent terminations. No other venting systems or components may be used.
In addition to the system requirements outlined below, when installing the chimney system follow the
installation and assembly instructions, which accompany the system components.
Clearances: All horizontal runs must have a minimum of 2”(50mm) clearance from the topmost surface of the
pipe to the nearest combustible surface. All other vent system clearances must be a minimum of
1” (25mm).
Termination requirements:
Note: Venting terminals shall not be recessed into a wall or siding.
Horizontal
Horizontal termination cap (either the standard 984 cap or the high wind 985 cap).
Horizontal terminations against vinyl sidings must use a vinyl siding stand-off.
Use a round support box/wall thimble when penetrating an inside wall, or on an outside wall only
when additional support or decorative trim is required. The round support box is not required on basic
instructions.
NOTE:In Canada local codes may require the use of a wall thimble on horizontal termination. Use part
#942.
Vertical
Firestop (when penetrating a ceiling)
Flashing
Collar
Vertical termination cap (980)
SEALANT
Sealant is required on the chimney system. Sealant will ensure that the inlet air for combustion enters from
outdoors and not through joints in the system, and that flue gases properly exit the system and are not re-
circulated. On the 4”inner flue pipe joints Mil-Pac Black sealant (or equivalent) is required (available from
local suppliers or Osburn dealer). The sealant should be applied to the male component’s joints. A bead of
high temperature silicone should be used on the outside of the 6-5/8 joints after assembly is complete.

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Simpson Duravent Components only
When using Simpson components a
maximum of two 90oelbows or
four 45oelbows are allowed in the
system (these are in addition to the
45oelbow off of the top of the
unit). Horizontal runs must be
upwardly sloped at a minimum of a
1/4" (6mm) rise per foot of
horizontal run.
When configuring the vent system
the following equivalent lengths for
elbows should be used in
conjunction with Figure 3.5.
For elbows in a horizontal plane a
90oelbow should be treated as 4
equivalent horizontal feet, and a 45o
elbow as 2 equivalent horizontal
feet. For elbows in the vertical
plane a 90oelbow should be treated
as 2 equivalent horizontal feet, and
a 45oelbow as 1 equivalent
horizontal foot. The 45oelbow off
the back of the units is not to be included in these calculations. Figure 3.5 Allowable Vent Lengths
Example 1
The figure below shows an installation in which there is a vertical rise off the back of unit in where two 45o
elbows have been employed, followed by a 90oelbow, a horizontal run, and the vent termination. In this
example the equivalent lengths of the 45oelbows would be 1 horizontal foot each, and the 90oelbow would
have an equivalent horizontal length of 2 feet. If the design of the system is constrained by the horizontal run,
then Figure 3.6 must be used to determine the minimum vertical rise necessary in order for the appliance to
properly function.
In this example, if H1were to be 6 feet, then the total equivalent horizontal length would be calculated as
follows:
H
T = H1+ HEquivalent
=6+(2x1)+2
=10feet
Referring to Figure 3.6, for a horizontal run of 10 feet, the minimum vertical rise must be 3 ½ feet. Therefore V1
+V2+ V3 will be need to be a minimum of 3 ½ feet.
Example 2

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Figure 3.7 (below) shows an installation in which there is a vertical rise V1off the back of unit, followed by a
90oelbow, a horizontal run H1, another 90oelbow, and a horizontal run H2 to the vent termination. In this
example the equivalent length of the first 90oelbow would be 2 horizontal feet; the second 90oelbow would
have an equivalent horizontal length of 4feet. If in this example the design of the system is constrained by the
vertical run V1and the horizontal run H2, then the Figure 3.5 would be used to determine the maximum
horizontal run H1 allowable in order for the appliance to properly function.
In this example if V1were to be 3 ½ feet, then by again referring to Figure 3.5 it can be determined that for a
vertical rise of 3 ½ feet the maximum horizontal run must be 10 feet.
H
T = H1+ HEquivalent + H2
=10feet
WhereH
Equivalent = 2 + H1+ 4 + H2
Therefore H1+ H2= 10 – 6
=4feet.
Therefore in order for this system to be viable the total horizontal length H1+ H2must not exceed 4 feet.
Figure 3.6 – Example 1 Figure 3.7 – Example 2
Determining Allowable Vent Configurations Determining Allowable Vent Configurations

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3.4 Vent Terminal Locations
V = Vent Termination
A = Air Supply Inlet
A = clearances above grade, veranda, porch, deck, or balcony [* 12" (30cm) minimum]
B = clearance to window or door that may be opened [* 12" (30cm) minimum]
C = clearance to permanently closed window [minimum 12" (30cm) recommended to prevent condensation on window]
D = vertical clearance to ventilated soffit located above the terminal within a horizontal distance of 2' (60cm) from the centre-line of
the terminal [36" (cm) minimum]
E = clearance to un-ventilated soffit [36" (90 cm) minimum]
F = clearance to outside corner = 36"
G = clearance to inside corner = 36"
H = * not to be installed above a meter/regulator assembly within 3' (90cm) horizontally from the centre-line of the regulator
I = clearance to service regulator vent outlet [* 6' (1.8 m) minimum]
J = clearance to non-mechanical air supply inlet to building or the combustion air inlet to any other appliance [* 12" (30cm)
minimum]
K = clearance to a mechanical air supply inlet [* 6' (1.8m) minimum]
L = † clearance above paved side-walk or a paved driveway located on public property [* 7' (2.1m) minimum]
M = clearance under veranda, porch, deck, or balcony [* 12" (30cm) minimum ‡]
†A vent shall not terminate directly above a sidewalk or paved driveway which is located between two single family
dwellings and serves both dwellings*
‡Only permitted if veranda, porch, deck, or balcony is fully open on a minimum of 2 sides beneath the floor*
*As specified in CGA B149 Installation Code (1991) NOTE: local codes or regulations may require different clearances
• Follow ANSI Z223.1 for U.S.A
Figure 3.8 - Vent Terminal Locations

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3.5 Mantels
Where a mantel is to be installed, Figure 3.9 may be used to determine the allowable clearances suitable for
various mantel depths.
Figure 3.9 – Mantel Clearances
3.6 Gas Line Installation
• Install supply line using any piping approved for your installation meeting CAN/CGA 6.10, AGA 3, ANSI
Z21.24 or Z21.45. A qualified gas fitter should install the gas line in accordance with all local building
codes. If codes permit, coiled copper tubing may be used for the gas supply line.
• A slotted screw tapping is provided on the gas control for a test gauge connection to measure the manifold
pressure, as well as a connection for inlet pressure measurement.
• This appliance must be isolated from the gas supply piping system by closing its individual manual shut off
valve during any pressure testing of the gas supply piping system at test pressures equal to or less than 1/2
psig (3.45 kPa).
• The appliance and its individual shut off valve must be disconnected from the gas supply piping system
during any pressure testing of the system at test pressures in excess of 1/2 psig (3.45 kPa).

/14
1. The point of entry of the gas line to the gas valve is on the left side of the unit. The gas line may be
passed through the left side of the unit, or alternatively through the bottom of the unit. Although gas
line access is available on the right side and bottom of the unit, bringing the line in on this side will
cause interference if the optional fan were to be later serviced or installed. An AGA & CGA approved
shutoff valve can be installed if so desired.
2. Purge the gas line of air.
3. Test the gas line for leaks using an electronic gas leak detector or soapy solution.
3.7 Thermostat, Wall Switch, or Remote Control Installation
W
ARNING: Do not use an open flame to test for gas leaks.
For your convenience, the fireplace can be operated by a thermostat, a wall switch or a remote control.
Millivolt thermostats and remote control kits are available from any authorised Osburn dealer.
NOTE: The thermostat or wall switch MUST be rated for millivolt use. Minimise splicing in all millivolt
wiring & solder all unavoidable splices.
1. Mount the thermostat or wall switch in the desired location and run two conductor thermostat wire to the
heater’s lower right hand corner, close to the gas supply line. Purchase the two conductor thermostat wire,
which is not provided, at any local supplier. The gauge of thermostat wire will determine the maximum
wire length and distance at which to locate the thermostat or wall switch. See Table 3.1 below and the
information packaged with thermostat. Be aware that as the length of wire increases, the probability of
adequate operating voltage decreases.
Wire Size Max. Wire Length
millimetres feet AWG Meters
0.6 10 22 3.1
0.8 25 20 7.6
1.0 40 18 12.2
1.3 64 16 19.5
1.6 100 14 30.5
Table 3.2 – Thermostat Wire Lengths
2. While the fireplace is being installed and the gas line is connected, solder a female spade connector to each
wire and connect them to the male connectors provided on the rear of the burner switch.
3. Check tests can be performed on the valve by using the trouble-shooting guide.
To install a remote control, please read instructions included with kit.