Montigo L38DF series Owner's manual

Gas Fireplace
L-Series DF
Installation
Operation &
Maintenance
L38DF
L42DF
L52DF
Warning:
Improper installation, adjustment,
alteration, service or maintenance can
causeinjuryorpropertydamage.Referto
this manual. For assistance or additional
information consult a qualied installer,
service agency or the gas supplier.
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 neighbor's phone. Follow the gas
supplier's instructions.
• If you cannot reach your gas supplier, call the re department.
For Your Safety:
Do not store or use
gasoline or other ammable
vapors and liquids in the
vicinity of this or any other
appliance.
Safety Notice:
Glass doors on gas replaces are
extremely hot while the replaces is on
and remain hot even after the replace
has been turned off. Safety screens
are available and can reduce the risks
of severe burns. Please keep children
away from the replace at all times.
®
C US
f i r e f e a t u r e
Installer: Leave this manual
with the appliance.
Consumer: Leave this man-
ual for future reference.
Check local codes and read all
instructions prior to installation.

Page 2
L-Series DF Gas Fireplace
Part No. XG0180
f i r e f e a t u r e
Table Of Contents Introduction
Thank You for choosing a Montigo Gas Fireplace.
About this Fireplace:
The L-Series DF is a replace with a linear-style burner. This replace
can be converted to both a Top Vent or Rear Vent application, and is
only currently available in the L38-DF model.
The L38DF is rated for Natural Gas at 26,000 BTU/H (7.62 Kilowatts)
Input or Propane at 26,000 BTU/H (7.62 Kilowatts) Input.
L38DF; Top or Rear Vent, Millivolt Pilot.
L38DF-I; Top or Rear Vent, Intermittent Pilot (HSI).
L38DF-A; Top and Rear Vent, with Battery Back-up System
TheL42DF is rated for Natural Gas and Propane at 32,000 BTU/H (9.97
Kilowatts) Input.
L42DF; Top or Rear Vent, Millivolt Pilot.
L42DF-I; Top or Rear Vent, Intermittent Pilot (HSI).
The L52DF is rated for Natural Gas at 40,000 BTU/H (11.73 Kilowatts)
Input or Propane at 34,000 BTU/H (9.97 Kilowatts) Input.
L52DF; Top or Rear Vent, Millivolt Pilot.
L52DF-I; Top or Rear Vent, Intermittent Pilot (HSI).
How to use this manual:
This manual covers installation, operation and maintenance. Lighting,
operation and care of this replace can be easily performed by the
homeowner. However, all installation and service work should be
performed by a qualied or licensed installer, plumber, or gastter who
is qualied or licensed by the state, province, region, or governing body
in which the appliance is being installed.
This manual covers all models and unless otherwise specied, the
designation L-Series DF refers to all models. Sections which are
specic to a particular model are marked with a symbol, plus
the appropriate model number.
Warranty and Installation Information:
The Montigo warranty will be voided by, and Montigo disclaims any
responsibility for, the following actions:
Modication of the replace and/or components including Direct-Vent
assembly or glass doors.
Use of any component part not manufactured or approved by Montigo in
combination with this Montigo replace system.
Installation other than as instructed in this manual.
Consult your local Gas Inspection Branch on installation requirements
for factory-built gas replaces. Installation & repairs should be done by
a qualied contractor.
Installations in Canada must conform to the current CAN/CGA B-
149.1and.2 GasInstallationCode andlocal regulations.If theoptional
air-circulating fan kit is installed, it must be electrically grounded in
accordance with CSA C22.1 Canadian Electrical Code Part 1 and/or
Local Codes.
InstallationsintheUSA must conform to local codes, or in the absence
of local codes to the National Fuel Gas Code, ANSI Z223.1-1988.Ifthe
optional air-circulating fan is installed, it must be grounded in accordance
with local codes or, in the absence of local codes, with the National
Electrical Code, ANSI/NFPA70-1987.WithintheStateofMassachusetts
this replace must comply with NFPA-54 Chapter 10.
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Introduction ..............................................................................2
Installation
Installing and Framing the Fireplace..............................3
Installing the Gasline......................................................4
Vent Installation..............................................................4
Installation Requirements ..................................4
Installing the Remote Switch .............................5
Vent Terminations ..............................................5
Converting to Top Vent / Rear Vent ..................6
Top Vent Venting Runs .....................................7
Rear Vent Venting Runs .............................11-12
Venting for Rear Vent models..........................13
Finishing around the replace
Fireplace Facing..............................................14
Mantels and Surrounds ...................................14
Surround Heat Shield ......................................14
Wiring .........................................................................15
Wiring for the Optional Fan Kit.........................15
Removing and Installing the Door................................15
Operation .........................................................................16 - 19
Maintenance ...........................................................................20
Troubleshooting............................................................20
Warranty .................................................................................21
Appendix
A. Termination Locations..............................................22
B. Spare Parts List .......................................................23
CAUTIONS
Due to its high operating temperatures, the appliance
should be located out of trafc & away from furniture
and draperies.
Children and adults should be alerted to the hazards
of the high surface temperature, which could cause
burns or clothing ignition.
Young children should be carefully supervised when
they are in the same room as the appliance.
Clothing or other ammable materials should not
be placed on or near the appliance.
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Page 3
L-Series DF Gas Fireplace
Part No. XG0180
f i r e f e a t u r e
Installation
Installing The Fireplace Shell
The replace may be installed in any location that maintains proper clear-
ances to air conditioning ducts, electrical wiring and plumbing. Safety,
as well as efciency of operation, must be considered when selecting
the replace location. Try to select a location that does not interfere
with room trafc, has adequate ventilation, and offers an accessible
pathway for Direct Vent installation. Refer to page 4 - Vent Installation
for more information.
The replace dimensions are shown below:
When installing a shelf over the top of the replace, the following
guidelines must be adhered to: For Rear Vent applications the
minimum clearance from the top of the replace to a shelf is 9". For
Top Vent applications, the minimum clearance is 17 1/2". (Minimum
2" clearance must still be maintained around the vent pipes.)
Figure 4. Framing for shelves over the fireplace.
Top Vent
Figure 3. Minimum Corner framing dimensions, using a 45° elbow.
Figure 2. Framing dimensions.
* When sheetrock is
not used behind the
fireplace, framing
depth may be reduced
by 5/8"
Framing
WARNING:
When this appliance is installed directly on carpeting, tile or
any combustible material other than wood ooring, it must be
installed on a metal or wood panel extending the full width and
depth of the appliance.
Top View
Front View Side View
Unprotected combustible walls which are perpendicular to the replace
opening, must not project beyond the shaded area shown in Figure
24.
For protection against freezing temperatures, it is recommended that
outer walls of the chase be insulated with a vapor barrier. This will reduce
the possibility of a cold-air convection current on the replace.
Figure 1. Fireplace dimensions.
Rear Vent
M
N
O
N
P
Q
0" clearance
to corners only
R
R
M
N
O
N
P
Q
0" clearance
to corners only
R
R
M
N
O
N
P
Q
0" clearance
to corners only
R
R
M
N
O
N
P
Q
0" clearance
to corners only
R
R
M
N
O
N
P
Q
0" clearance
to corners only
R
R
A B C D E F G H I J K L
L38DF 373
/ 4291 / 2343 / 411 / 4181 / 41 181 / 2353 / 4111 / 25 8 213 / 4
L42DF 42 301
/
211
/
4181
/
2127 121
/
25 8
L52DF 52 331
/ 447 21 / 2211 / 41 221 / 2491 / 4131 / 25 8 261 / 2
387 / 8193
/
4391
/
2
MT
10
S
V
Header Header
Shelf
MEL Short
Shelf
LM
5
1
/
2
Header
combustible materials are:
L38DF L42DF L52DF
Top - Rear Vent * 9" 9" 9"
Top - Top Vent 171
/
2" 21" 171
/
2"
Back 1" 2" 1"
Sides 1" 1" 0"
Floor 0" 0" 0"
Mantle** 4" 6" 4"
Clearances
These clearances apply to all dimensions except the framed opening,
where the clearance to combustibles is 0". The L-Series clearances to
* Clearancefrom the top of the to acombustible ceilingwithin the
enclosure.
** Refer to page 14.
M O Q S
L38DF 351
/ 438 201 / 875 541 / 441 / 429 381 / 2
L42DF 361
/ 2225 / 882 585 / 841 / 433
L52DF 39 52 231
/ 2961 / 2681 / 441 / 4351 / 848
411 / 2431
/ 2
7
/ 8
T
N P R17
N/A
21
V

Page 4
L-Series DF Gas Fireplace
Part No. XG0180
f i r e f e a t u r e
Installation
Use only certified Montigo vent components. (Use of other parts will void the
Montigo warranty, and may impede the operation of the fireplace.)
All joints must be secured with a minimum of two screws per joint
Vent terminations must not be recessed in walls or siding
Horizontalrunsmustbesupportedbyaminimumoftwosupportsperhorizontal
run. A minimum of one screw on each side of support is also required
Flex vent sections may be stretched up to 50% of their total length (eg. a
24" section may be stretched to 36")
Maximum horizontal run with no vertical rise is 6 feet.
Flex vent sections over 6 feet must fall within the limits set by the venting
graph and must have a minimum vertical rise of 3 inches per foot of flex.
Solid vent sections may be cut less than half way from the female end
Ventingcomponentscanbeusedinanycombinationofsolid/rigidpipeorflex
pipe and in any orientation (Male connectors can face in any direction)
Vent Terminations
SelectingATermination Location
Choosing your vent termination location will help to determine whether
you need to use a top vent or rear vent replace. Figure 6a, below, shows
typical replace locations and the venting options they provide.
For a more detailed diagram of allowed termination locations, see Ap-
pendixA.
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Cautions:
Vent terminations can be very hot. If the termination is less
than 7 feet above a public walkway, it should be tted with
a certied Montigo Heat Guard. (Part no. PTKOG).
Do not obstruct, or attempt to conceal, the vent termination.
These actions will affect the operation of the replace,
and may be hazardous.
In heavy snow areas, take extra care to prevent snow
buildup from obstructing the vent termination.
Use Montigo VSS Vinyl Heat Shield when using on
applications with vinyl siding to guard against possible
damage.
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Figure 6a. Fireplace locations and vent terminations.
Installing The Gas Line
The gas line must be installed before nishing the L-Series DF Fireplace.
NaturalGas requires a minimum inlet gas supply pressure of 5.5" W.C.
& a manifold pressure of 3.5" W.C. Propane Gas requires a minimum
inlet gas supply pressure of 11" W.C. & a manifold pressure of 10" W.C.
Provision must also be made for a 1/8" N.P.T. plugged tapping and be
accessible for test gauge connection immediately upstream of the gas
supply controls to the appliance. The replace gas connection and
the main operating gas valve is located behind the removable trim at
the bottom of the unit and need only be attached to the gas line with
an approved tting, as required by the applicable installation codes.
To access the replace gas connection the main burner must be
removed as shown below in gure 5a.
• Only use gas shut-off valves approved for use by the state, province,
region, or governing body, in which the appliance is being installed, or
as required by the applicable installation codes.
• Flexible gas connectors must not exceed 3 feet in length, unless it is
allowable within applicable installation codes.
Note: After gas line is connected, each appliance connection,
valve and valve train must be checked while under normal
operating pressure with either a liquid solution, or leak
detection device, to locate any source of leak. Tighten any
areas where bubbling appears or leak is detected until
bubbling stops completely or leak is no longer detected.
DO NOT use a flame of any kind to test for leaks.
Figure 5a. Gas line access.
The appliance and its individual shut-off valve must be disconnected
from the gas supply piping system during any pressure testing of that
system at test pressures in excess of 1/2 psig (3.5 kPa).
The 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 (3.5 kPa).
Gasline Access
0.875” dia.
2” height
to center
7”
to center
Vent Installation
This section covers the installation of direct venting and terminations.
Installation Requirements
L-Series DF fireplaces are certified for use with Montigo Standard Series
(5" / 8") venting components.
Minimum clearance to combustible construction around the vent pipe
is 1" on all sides, except on horizontal venting where the top of the pipe
must have a clearance of at least 2".
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Page 5
L-Series DF Gas Fireplace
Part No. XG0180
f i r e f e a t u r e
Installation
Installing Terminations with Built-In Frames
Installing Terminations with MSR Frames
12
12
1. Frame the termination opening to 12" x 12".
2. Fasten the termination to the studs using a minimum of 4 screws.
11
11
1. Frame the termination opening to 11" x 11".
2. Fasten the termination to the studs using a minimum of 4
screws.
Installing Terminations with MOSR Frames
1212
12
MOSR
1. Frame the termination opening to 12" x 12".
2. Fasten the MOSR frame to the interior side of the studs using a
minimum of 4 screws.
3. Insert the termination into the MOSR frame as shown here, and
attach by screwing through the four pilot holes in the termination.
MSR
PTO-3F (5"/8")
PTO-3F (5"/8")
PTO-3F (5"/8")
PTKOG (5"/8")
1. Ensure that the two longmounting brackets are facing the bottom
of the termination. (See inset). This will provide more heat protection
at the top of the termination, where temperatures are highest.
2. Attach to the faceplate of the termination using four sheet metal
screws.
Installing Heat Guards over Terminations
Installing The Remote Switch
The L-Series DF's gas valve, located behind the lower trim, may be
connected to a wall switch. The valve generates its own power on a
millivolt circuit. Use only low voltage wire, and DO NOT connect
any external power to it.
Note: The switch location must not exceed 30' from the replace.
Installing The Standoffs
To avoid elevated mantel temperatures, all L-Series DF gas
replaces are required to have the supplied standoffs installed.
The replace is supplied with two standoffs. Bend and install these
standoffs on top of the replace ensuring that the height of the standoff
maintains a 6" clearance.
Figure 6b. Installing the standoffs.
Installing the Nailing
Flange Extension
Once the replace is placed into the framed opening, the supplied
nailing extension must be placed along the top edge of the replace,
and nailed in place to the framing, as illustrated below.
Figure 6c. Installing the Nailing Flange Extension.

Page 6
L-Series DF Gas Fireplace
Part No. XG0180
f i r e f e a t u r e
Installation
Converting to Top Vent/ Rear Vent
L-Series DF Top Vent
Use the following instructions to convert an L-Series DF for Top Vent
use:
Install the 5" inner ue cap on the rear ue outlet and secure the
cap in place with ve screws, as shown in gure 7a.
Install the 8" outer ue cap on the rear ue outlet, and secure it
with ve screws, as shown in gure 7a.
1.
2.
Install the ue gasket material and ue cover plate on the rear vent
outlet . Fasten the plate with four screws, as illustrated below.
Install the 5" inner ue collar and the 8" outer ue collar in place
on the top vent outlet using 5 screws, as illustrated below.
3.
4.
Figure 7a. Flue cap installation for Top Vented fireplace.
Figure 7b. Flue collar installation for Top Vented fireplace.
Figure 8a. Flue cap installation for Rear Vented fireplace.
Figure 8b. Flue collar installation for Rear Vented fireplace.
L-Series DF Rear Vent
Use the following instructions to convert an L-Series DF for Rear Vent
use:
Install the 5" inner ue cap on the top ue outlet and secure the
cap in place with ve screws, as shown in gure 8a.
Install the 8" outer ue cap on the top ue outlet, and secure it
with ve screws, as shown in gure 8a.
1.
2.
Install the ue gasket material and ue cover plate on the top
vent outlet. Fasten the plate with four screws, as illustrated in
gure 8b.
Install the 5" inner ue collar and the 8" outer ue collar in place
on the rear vent outlet using 5 screws, as illustrated below.
3.
4.
5”Inner Flue Cap
8”Outer Flue Cap
5”Inner ue CapFl
Fl8”Outer ue Cap
5”Inner Flue Collar
8”Outer Flue Collar
8”Outer Flue Collar
5”Inner Flue Collar

Page 7
L-Series DF Gas Fireplace
Part No. XG0180
f i r e f e a t u r e
Installation
Top Vent Venting Runs
For the L-Series DF Top Vent, there are two types of installations: A)
Through-The-Wall Installations and B) Vertical (Through-The-Roof)
Installations.
A) Through-The-Wall Installations
Before you install any venting, you must determine whether the venting
run will be acceptable. Unacceptable venting can affect the replace's
combustion.
The Venting Graph
Measure the vertical height from the replace hearth to the centre of
the termination and the horizontal run from the from the replace ue
collar to the wall ange of the termination. Plot on the Venting Graph
(Fig. 9a) with an 'X'.
If the 'X' falls on or above the top boundary of the shaded area, the
installation is acceptable.
L38DF
Example A: (Acceptable Installation)
If the vertical dimension from the hearth is 108" and the horizontal run to
the wall flange of the vent termination is 180", this would be an accept-
able installation.
Example B: (Acceptable Installation)
If the vertical dimension from the hearth is 48" and the horizontal run to
the wall flange of the vent termination is 72", this would be an acceptable
installation.
Example C: (Unacceptable Installation)
If the vertical dimension from the floor of the fireplace is 60" and the hori-
zontal run to the wall flange of the vent termination is 144", this would
NOT be an acceptable installation.
Figure 9a. L38DF Top Vent Venting Graph
L42DF
Example A: (Acceptable Installation)
If the vertical dimension from the hearth is 84" and the horizontal run to
the wall flange of the vent termination is 36", this would be an acceptable
installation.
Example B: (Acceptable Installation)
If the vertical dimension from the hearth is 90" and the horizontal run to
the wall flange of the vent termination is 126", this would be an acceptable
installation.
Example C: (Unacceptable Installation)
If the vertical dimension from the floor of the fireplace is 74" and the
horizontal run to the wall flange of the vent termination is 108", this would
NOT be an acceptable installation.
Figure 9b. L42DF Top Vent Venting Graph
L52DF
Example A: (Acceptable Installation)
If the vertical dimension from the hearth is 84" and the horizontal run to
the wall flange of the vent termination is 36", this would be an acceptable
installation.
Example B: (Acceptable Installation)
If the vertical dimension from the hearth is 108" and the horizontal run to
the wall flange of the vent termination is 120", this would be an acceptable
installation.
Example C: (Unacceptable Installation)
If the vertical dimension from the floor of the fireplace is 72" and the
horizontal run to the wall flange of the vent termination is 84", this would
NOT be an acceptable installation.
Figure 9c. L52DF Top Vent Venting Graph
NOTES: All dimension lengths for vertical or horizontal runs are
measured from centre of the vent pipe.
Venting runs must fall within the limits set by the venting
graph (see Figure 9a).
L38DF
L42DF
L52DF

Page 8
L-Series DF Gas Fireplace
Part No. XG0180
f i r e f e a t u r e
Installation
Available Top Vent Components
The following venting components are available for the L-Series DF
Top Vent:
5" / 8" Venting
A - Termination PTO-3 (3" Length)
PTO-3F (3" Length)
B - Stucco Kits MSR (Stucco Frame)
MOSR (Stucco Can)
BSR ( Brick Can)
C - Flex Sections PFL-1 (12" Section)
PFL-2 (24" Section)
PFL-3 (36" Section)
PFL-4 (48" Section)
D - Rigid
Sections
PEXT-1 (12" m/f Section)
PEXT-2 (24" m/f Section)
PEXT-3 (36" m/f Section)
PEXT-4 (48" m/f Section)
E - Elbows PEL-90MM (m/m 90° Elbow)
PEL-90FF (f/f 90° Elbow)
PEL-90FM (f/m 90° Elbow)
NOTES: All dimension lengths for vertical or horizontal runs are
measured from centre of the vent pipe.
Venting runs must fall within the limits set by the venting
graph (see Figure 9A).
PEL
Example 1:
For our shortest venting conguration use components A and E (see
Figure 9a).
Figure 10. Typical Top Vent installation. If the 90° elbow is installed
directly on the fireplace, for height to the center of the
termination see chart on page 3.
Horizontal Venting
Figure11. Typical Top Ventinstallation.Thesolid sections can beused in
various combinationstoobtainthedesiredventrun.Thevent
run must fall within the limits set by the venting graph.
Figure 12. Extended Installation using a combination of solid and flex
venting. Use the vent graph to determine your allowable
run, then select appropriate components.
90° Elbow
PEXT Section
Termination
Example 2:
Rigid sections and an elbow used in conjunction with 3 ft. ex section
(PFL-3) will, when extended in a ve foot chase, allow for a maximum
horizontal run of twelve and one-half feet from the centre of the replace
to outside wall and a minimum of 7'6" when retracted in opposite direction
(see Figure 12 and 13).
"C" ex sections and "D" rigid sections may be used in conjunction with
one another to obtain different possible horizontal length installations.
NOTE: Flex section with no vertical rise must not exceed maximum
horizontal length of 3 feet (see Figure 14). Flex runs over 3 feet must
fall within the limits set by the venting graph, and must have a minimum
vertical rise of 3" per foot of ex.
Important:
An inspection of the explosion relief appers and door must be
made prior to lighting the replace. This will ensure the door gas-
keting material will provide an adequate seal during operation.

Page 9
L-Series DF Gas Fireplace
Part No. XG0180
f i r e f e a t u r e
Installation
Figure 13. Retracted Installation using a combination of solid and flex
venting. Use the vent graph to determine your allowable
run, then select appropriate components.
Figure 14. Horizontal flex installation with MIN vertical rise.
B. Vertical (Through-The-Roof) Installations
5/8" with option for 4/7" (on applicable models)
Vertical rise >12' can be reduced (on applicable models).
Vertical Terminations must be installed:
•minimum 2' (two feet) above the highest point where
vent passes through the roof.
•minimum 6' (six feet) from a mechanical air inlet
•minimum 18" (1 1/2 feet) from a parapet wall.
 Maximum vent height is:
32 feet above replace.
35 feet above replace.
35 feet above replace.
Note: Flame characteristics will change if the maximum vent height
is used.
 Minimum clearances 2" from vent to all combustible materials must
be maintained.
•
•
•
L38DF
L42DF
L52DF
A maximum of two offsets (each offset has two 90° bends) may be
made and shall not exceed total length of 25% of the vertical vent
height, when measured center to center of piping.
Example: Typical vent installation.
20' vertical vent
2 - 2' offsets required
25% of 20' = 5' max. offset allowed
This venting configuration meets requirements.
4" / 7" Venting 5" / 8" Venting
A - Termination MVTK-1 PVTK-1
B - Flex Sections MFL-1 (12" Section)
MFL-2 (24" Section)
MFL-3 (36" Section)
MFL-4 (48" Section)
PFL-1 (12" Section)
PFL-2 (24" Section)
PFL-3 (36" Section)
PFL-4 (48" Section)
C - Rigid Sections MEXT-1 (12" m/f Section)
MEXT-2 (24" m/f Section)
MEXT-3 (36" m/f Section)
MEXT-4 (48" m/f Section)
PEXT-1 (12" m/f Section)
PEXT-2 (24" m/f Section)
PEXT-3 (36" m/f Section)
PEXT-4 (48" m/f Section)
D - Support Ring
& Plate
MSPXT-8 PSPXT-8
E - Firestop FS-8 PS-8
F - Roof Flashing MRF-7 (1/12 - 7/12 pt.)
MRF-12 (7/12 - 12/12 pt.)
PRF-7 (1/12 - 7/12 pt.)
PRF-7 (7/12 - 12/12 pt.)
G - Adaptor / Vent
Reducer
PVA5487 (5"/8" to 4"/7")
Figure 15. Straight, vertical venting showing required PXT-10 adaptor
(supplied with the PVTK-1 termination).
MEXT/PEXT
MEXT/PEXT
MXT-10/PXT-10
* For venting MIN 1" clearance to all vertical combustibles,
MIN 2" to all horizontal combustibles.

Page 10
L-Series DF Gas Fireplace
Part No. XG0180
f i r e f e a t u r e
Installation
Figure 17. Vertical venting with 2 offsets (1 offset= two 90° bends).
Figure 16. Vertical venting with 1 offset (1 offset= two 90° bends).
Figure 18. Reducing Vertical Vent from 5/8" to 4/7".
Reduced Vertical Installation
It is possible to reduce vertical vent runs from 5"/8" venting to 4"/7"
venting. Reduced vertical venting may only be used when the installation
exceeds 12 feet and terminates through the roof,andif theverticalvent
reducer is used with the following venting conguration.

Page 11
L-Series DF Gas Fireplace
Part No. XG0180
f i r e f e a t u r e
Installation
Important: Corner Installation is available only for
Top Vent Units.
Figure 20. Corner installation.
Figure 21. Flex installation. (NG Models Only)
2. 45° Corner Installation.
Attach an PEL-90 (90° elbow) directly onto the ue collar, and attach
it to the PEL-45 (45° elbow). Cut the PXT-18 to suit and insert it into
the PEL-45. Slide the replace into position, and then connect it to
the exterior termination.
3. Corner Installation — 45° or less.
Use an PTO-3 termination and an PFL-1 or PFL-2 (12" or 24"
compressed length) and a frame, if appropriate.Flex may be turned to
obtain desired degree of angle required but must not exceed 45°.
Figure 19a. Extended installation.
PXT-12
PXT-18
PEL-45 Elbow
PEL-90 Elbow
Rear Vent Venting Runs
The L-Series DF Rear Vent has three possible installations which do
not require vertical lift, all of these installations require that you install
the RHS101 heat shield.
Heat Shield
The heat shield (RHS101) must be used on all installations straight
through the wall, at the point where the vent pipe connects to the
termination. With the heat shield, proper vent clearances can be
maintained. The heat shield is not included with the replace.
To install the heat shield, slide one section over the vent pipe on the inside
of the wall opening, with the circular portion insidethewallcavity. Screw
the shield in place over the wall opening. Install the second section on
the outside of the wall opening sliding the circular portion into the wall
opening. Refer to Figure 19.
Figure 19. Heat Shield. Install by sliding over the vent pipe where it
passes through combustible construction.
1. Straight Installation.
The height from the hearth to the center of the termination is 21
3/4". For straight installations use a 12" extension pipe (PXT-12)
with female/female connections. For shorter installations, cut the
PXT-12 to the desired length. Refer to gure 19a.
EnsurethattheRHS101heatshieldisinstalledbeforeattaching
the pipe to the termination.
Note: For Rear Vent models, maximum horizontal run with no
vertical lift must never exceed 12".

Page 12
L-Series DF Gas Fireplace
Part No. XG0180
f i r e f e a t u r e
Installation
B. Multi-Elbow Installations
For more difcult installation situations, the L-Series DF Rear Vent may
be installed with two - 90° elbows and up to 15' of horizontal run. If using
this installation option, you must adhere to the following guidelines:
 the rst 90° elbow must be placed directly on the ue collar
 you must have a minimum vertical lift of 50" (measured from the
hearth)
 your vent run must fall within the limits set by Figure 22
Before you install any venting, you must determine whether the venting
run will be acceptable. Unacceptable venting can affect the replace's
combustion.
The Venting Graph
Measure the vertical height from the replace hearth to the centre of
the termination and the horizontal run from the from the replace ue
collar to the wall ange of the termination. Plot on the Venting Graph
(Fig. 22) with an 'X'.
If the 'X' falls on or above the top boundary of the shaded area, the
installation is acceptable.
L38DF
ExampleA: (Acceptable Installation)
If the vertical dimension from the hearth is 84" and the horizontal
run to the wall ange of the vent termination is 36", this would be
an acceptable installation.
Example B: (Acceptable Installation)
If the vertical dimension from the hearth is 94" and the horizontal
run to the wall ange of the vent termination is 126", this would be
an acceptable installation.
Example C: (Unacceptable Installation)
If the vertical dimension from the oor of the replace is 78" and
the horizontal run to the wall ange of the vent termination is 108",
this would NOT be an acceptable installation.
Figure 22. L38DF Multi-Elbow Venting Graph.
L38DF
L42DF
ExampleA: (Acceptable Installation)
If the vertical dimension from the hearth is 84" and the horizontal
run to the wall ange of the vent termination is 36", this would be
an acceptable installation.
Example B: (Acceptable Installation)
If the vertical dimension from the hearth is 90" and the horizontal
run to the wall ange of the vent termination is 126", this would be
an acceptable installation.
Example C: (Unacceptable Installation)
If the vertical dimension from the oor of the replace is 78" and
the horizontal run to the wall ange of the vent termination is 108",
this would NOT be an acceptable installation.
L52DF
ExampleA: (Acceptable Installation)
If the vertical dimension from the hearth is 84" and the horizontal
run to the wall ange of the vent termination is 36", this would be
an acceptable installation.
Example B: (Acceptable Installation)
If the vertical dimension from the hearth is 108" and the horizontal
run to the wall ange of the vent termination is 120", this would be
an acceptable installation.
Example C: (Unacceptable Installation)
If the vertical dimension from the oor of the replace is 72" and
the horizontal run to the wall ange of the vent termination is 84",
this would NOT be an acceptable installation.
L42DF
Figure 22b. L42DF Multi-Elbow Venting Graph.
012 24 36 48 60 72 84 96 108 132120 144 156 168 180
Horizontal Run (in.)
Hearth
0
12
24
36
48
60
72
84
96
108
L52DF

Page 13
L-Series DF Gas Fireplace
Part No. XG0180
f i r e f e a t u r e
Installation
Figure 23. Multi-elbow installation.
For L38DF distance 'H' must be a minimum of 46". For
L42DF and L52DF distance 'H' must be a minimum of 50".
The vent run must comply with figure 22.
NOTES: All dimension lengths for vertical or horizontal runs are
measured from center of the vent pipe.
Venting runs must fall within the limits set by the venting
graph (see Figure 22a).
Installation Of Rear Vent DV
The following venting components are available for an L-Series DF in
a Rear Vent installation:
4" / 7" Venting 5" / 8" Venting
A - Termination MTO-3 (3" Length)
MTO-3F (3" Length)
PTO-3 (3" Length)
PTO-3F (3" Length)
B - Stucco Kits MSR (Stucco Frame)
BSR-4 (4" Brick Frame)
BSR-6 (6" Brick Frame)
MOSR (Stucco Can)
MSR (Stucco Frame)
BSR-4 (4" Brick Frame)
BSR-6 (6" Brick Frame)
MOSR (Stucco Can)
C - Flex Sections MFL-1 (12" Section)
MFL-2 (24" Section)
MFL-3 (36" Section)
MFL-4 (48" Section)
PFL-1 (12" Section)
PFL-2 (24" Section)
PFL-3 (36" Section)
PFL-4 (48" Section)
D - Rigid
Sections
MEXT-1 (12" m/f Section)
EXT-18 (18" f/f section)
MEXT-2 (24" m/f Section)
MEXT-3 (36" m/f Section)
MEXT-4 (48" m/f Section)
PEXT-1 (12" m/f Section)
PXT-20 (20" section)
PEXT-2 (24" m/f Section)
PEXT-3 (36" m/f Section)
PEXT-4 (48" m/f Section)
E - Elbows MEL-90MM (m/m 90° Elbow)
MEL-90FF (f/f 90° Elbow)
MEL-90FM (f/m 90° Elbow)
EEL-45 (f/m 45° Elbow)
PEL-90MM (m/m 90° Elbow)
PEL-90FF (f/f 90° Elbow)
PEL-90FM (f/m 90° Elbow)
PEL-45FM (f/m 45° Elbow)
Figure 22c. L52DF Multi-Elbow Venting Graph.

Page 14
L-Series DF Gas Fireplace
Part No. XG0180
f i r e f e a t u r e
Installation
Finishing Around the Fireplace
Combustible mantels and mouldings may be safely installed over the
top and on the front of the replace provided that they do not project
beyond shaded area shown in Figure 24. Side wall clearances are 3".
Combustible surrounds may be installed with 3" clearance to the side
of the replace as shown in Figure 25.
Fireplace Facing
When selecting the nish material for your replace, it is important to
remember the following:
If the surround of the replace is to be painted to match the room decor,
heat-resistant paint must be provided . Also, decorative facing must not
extend past the replace opening at all, because it will interfere with the
access to retainers for removal of glass door and access to the lower
compartment.
Mantels & Surrounds
NOTE: National Canadian Gas Association mantel test requirements
are for re hazard prevention to combustible materials.
New technology, to meet consumer and government demands for the
wise use of energy, has prompted us to manufacture many models of
replaces which are hot, fuel and energy efcient.
Please be aware; temperatures over the mantel will rise above normal
room temperature and walls above replace may be hot to touch.
Warning:
When covering the upper metal portion of the replace, up to 6" (as
shown,Fig.24&Fig.25) with a non-combustible material Please Note: The
decorative facing materials may be subject to temperatures in excess of
250° F. This should be considered when selecting facing materials.
We recommend careful consideration be given to the effects of elevated
mantel temperatures which may be in excess of product design, for
example: candles, plastic or pictures. This can cause melting, deformation,
discoloration or premature failure of T.V. and radio components.
Painting:
Special care is recommended by the Master Painters and Decorators
Association, when painting the replace surrounds, to select and apply
a quality Alkyd sealer prior to the applying of latex paints. This is to
prevent leaching of water from evaporation and causing a brownish
staining effect to paint over coats.
Figure 25. Combustible surrounds.
Figure 24. Combustible mantles and facings.
Horizontal Run (in)
Figure 24a. Combustible surround Shield, (three (3-pcs).
Side shield
(L42-DF only) Side shield
(L42-DF only)
Surround Heat Shield
Included with the L42-DF Gas replace, is a heat shield fabricated from
galvanized steel. The kit comes with three (3) pieces as shown below.
This shield is to protect all adjacent combustible mantels and mouldings
from excessive heat radiated by the cabinet of the replace. This shield
must be installed as shown in Figure 24a.
1). Top shield fastened as shown. Wide ange face up, shallow ange
toward inside of room, nailed or screwed ush with framing.
2). Side shield's fastened as shown (Rear Vent Gas replace only).
Wide anges face out, shallow ange toward inside of room, nailed or
screwed ush with framing.
Top shield
(L42-DF only)
Non-Combustible
Facing Material
Non-Combustible
Facing Material
Header
Drywall/
Sheetrock

Page 15
L-Series DF Gas Fireplace
Part No. XG0180
f i r e f e a t u r e
Installation
Wiring
Gas Control and Pilot Wiring L-Series DF-I
Figure 26. Wiring for the L-Series DF-I with Honeywell gas control and
pilot.
Wiring for the optional Fan Kit
All L-Series DF replaces may be equipped with optional fan kits for
circulating heat into the living space.
Installations in Canada which employ the fans must be electrically
grounded in accordance with CSA C22.1 Canadian Electrical Code
Part 1 and/or Local Codes.
Installations in the USA which employ the fans must be grounded in
accordance with local codes or, in the absence of local codes, with the
National Electrical Code, ANSI/NFPA 70-1987.
For more information see the Fan Kit Installation Guide included with
the fan kit.
NOTE: If any of the original wire supplied with the appliance is replaced, it
must be replaced with the same type, or its equivalent.
Figure 27b. Wiring schematic for optional fans.
Figure 27a. Wiring for optional fans.
Removing and Installing
the Door
Removing the door:
The door is held in place by a lip on the top of the metal frame and two
buckles at the bottom. Release the buckles and lift the door carefully up
and away from the front of the replace. See gures 28a and 28b.
Installing the door:
Hook the top edge of the door frame into place. Lower and rest the door
frame in place and fasten the buckles. See gures 28a and 28b.
Figure 28b. Removing and installing the glass door.
Figure 28a. Removing and installing the glass door.
Cautions:
DO NOT OPERATE THIS FIREPLACE WITHOUT THE
GLASS DOOR OR WITHA BROKEN GLASS DOOR.

Cautions:
Honeywell (Q3450)
Pilot Assembly
Pilot Electrical
Harness Connector
Honeywell Gas
Control (SV9501M)
Junction Box Cover
Fuse
Gas Control
Connector
Junction Box
115VAC
24VAC
40 VA
Transformer
Black
White
Green
Gnd Screw
Limit Switch Wall Switch
Fan Plug
Receptacle
5/1/60 Supply
G L1 L2
G
L2-WH
L1-BLK
p g
Quick Connect
lu to motor

Page 16
L-Series DF Gas Fireplace
Part No. XG0180
f i r e f e a t u r e
WARNING:If you do not follow these instructions exactly, a re or explosion may
result causing property damage, personal injury or loss of life.
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,
don't try to repair it, call a qualified service technician. Force
or attempt to 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 which has been under water.

A. This appliance has a pilot which must be lighted by hand.
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.



To Turn Off Gas To Appliance:
Operation - Model L-Series DF
3. Push in gas control knob slightly and turn clockwise to
"Off". Do not force.
4. Flip up the lower trim.
1. Turn off remote switch.
2. Flip down the lower trim.
1. STOP! Read the safety information above on this label.
2. Flip down the lower trims.
3. Push in gas control knob and turn clockwise to "OFF."
4. Wait five (5) minutes to clear out any gas. Smell for gas,
including near the floor. If you then smell gas, STOP! Follow
"B" in the safety information above on this label. If you don't
smell gas, go to the next step.
5. Locate pilot burner (See illustration at right.) and follow steps
below.
6. Turn knob on gas control counter clockwise to
"PILOT."
7. Push in gas control knob completely and hold. Light with Piezo
Igniter button. Continue to hold the control knob in for about
(1) minute after the pilot is lit. Release the knob and it will pop
back up. Pilot should remain lit. If it goes out repeat steps 3
through 8.
If knob does not pop up when released. Stop and
immediately call your service technician or gas
supplier.
If the pilot will not stay lit after several
tries, turn the gas control knob to
"OFF"andcallyourservicetechnician
or gas supplier.
8. Pushin gas controlknob and turncounter-
clockwise to "ON."
9. Flip up the lower trim.
10. Turn on remote switch to ignite fire.


Lighting Instructions:
L-Series DF
with Continuous Pilot
For Your Safety - READ BEFORE LIGHTING:
NOTE: Gas control knob cannot be turned from
"PILOT" to "OFF" unless knob is pushed
in slightly. Do not force.

Page 17
L-Series DF Gas Fireplace
Part No. XG0180
f i r e f e a t u r e
For Your Safety - READ BEFORE LIGHTING:
To Turn Off Gas To Appliance:
Lighting 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, don't try to repair it, call a qualified service technician.
Force or attempt to 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 which has been under water.

A. This appliance is equipped with an ignition system that
lights the pilot burner automatically. Do not attempt to
light the pilot by hand.
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.



1. Turn off remote switch.
2. Flip down the lower trim.
3. Turn the switch on the gas control to "Off".
4. Flip up the trim.
1. STOP! Read the safety information above on this label.
2. Flip down the lower trims.
3. Turn switch on the gas control to OFF".
4. Wait 5 minutes to clear out any gas. If you smell gas,
STOP! Follow "B" in the safety information above on this
label. If you don't smell gas, go to the next step.
5. Turn switch on the gas control to "ON". NOTE: This unit is
equipped with an ignition system that lights the pilot burner
automatically. Do not attempt to light the pilot by hand.
6. Turn on wall switch.
7. Flip up the lower trim.
8. If the fireplace does not operate, follow the instructions "To
Turn Off Gas To Appliance" and call your service technician
or gas supplier.
with Honeywell Electronic Ignition
Operation - Model L-Series DF-I
L-Series DF-I
Gas
Inlet
Gas Control Switch
Shown in "On" Position
WARNING:If you do not follow these instructions exactly, a re or explosion may
result causing property damage, personal injury or loss of life.

Page 18
L-Series DF Gas Fireplace
Part No. XG0180
f i r e f e a t u r e
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. This appliance is equipped with an ignition system that allows
for both continuous pilot operation as well as an electronic
ignitionthatlightsthepilotburnerautomatically.Donotattempt
to light the pilot by hand.
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.
1. Turn off remote switch.
2. Flip down the lower trim.
3. Turn the switch on the Control Module to "Continuous Pilot
Off".
4. Flip up the trim.
with American Flame Electronic Ignition
B-Series BF-A
ADJ.
AUX Learn
Remote/Off
Continuous
Pilot
Off/On S I
IPIPOWER
6VAC 200mA
AC ADAPTOR
Wall Switch (SWI)
Brown
Brown
Black
White
Green White
Orange
Pilot
Main
Manual
Hi/Lo
Main Gas InputMain Gas Output
White (Sensor)
Orange (Igniter)
Control
Module
Emergency
Battery
Power
(4 x AA)
Pilot Assembly
Red
Black
Red
Black
Optional
L-Series DF-I
Lighting Instructions:
To Turn Off Gas To Appliance:
1. STOP! Read the safety information above on this label.
2. Flip down the lower trims.
3. If the switch on the control module is set to "Continuous Pilot
Off" then the pilot will light when the appliance is turned on
by the remote switch. When switched to "Continuous Pilot
On" then the control module will attempt to light the pilot until
it detects that the pilot has been successfully lit.
4. With the control module set to "Continuous Pilot Off" wait 5
minutes to clear out any gas. If you smell gas, STOP! Follow
"B" in the safety information above on this label. If you don't
smell gas, go to the next step.
5. Turn switch on the control module to "Continuous
Pilot On" This will initiate the lighting of the pilot.
NOTE: This unit is equipped with an ignition system that lights
the pilot burner automatically. Do not attempt to light the
pilot by hand.
6. Turn on wall switch.
7. Flip up the lower trim.
8. If the fireplace does not operate, follow the instructions "To
Turn Off Gas To Appliance" and call your service technician
or gas supplier.
9. If you wish to operate the Fireplace without the Continous Pilot
simply turn the switch on the control module to "Continuous
Pilot Off" and follow instructions 6-8.
For Your Safety - READ BEFORE LIGHTING:
with American Flame Electronic Ignition
Operation - Model L-Series DF-A
WARNING: If you do not follow these instructions exactly, a re or explosion may
result causing property damage, personal injury or loss of life.

Page 19
L-Series DF Gas Fireplace
Part No. XG0180
f i r e f e a t u r e
Page 19
L-Series DF Gas Fireplace
Part No. XG0180
f i r e f e a t u r e
Maintenance
WARNING:
Do not attempt to clean glass when hot.
Do not clean glass with abrasive materials as any glass
etching may cause premature glass failure.
CAUTIONS
Fireplace gas control must be in the “OFF” position
and pilot and main burners extinguished when cleaning
appliance with a vacuum.
Doors and logs can get very hot. Handle only when
cool.


General
Have the replace and installation inspected yearly.Theinspection
must include, but is not limited to, the following:
• A visual check of the entire vent system and termination.
• An inspection of the explosion relief appers and the door
gasketing to ensure a proper seal.
• An inspection of the burner, venturi, and primary air openings.
• An inspection of the gas valve, gas components, and pilot ame.
For your convenience a 1/8" manifold pressure tap is supplied
on the gas valve for a test gauge connection. See Figure 32.
• Inspection of all optional equipment; fans, thermostats, etc.
For Natural Gas this appliance requires a minimum inlet pressure
of 5.5" W.C. and a manifold pressure of 3.5" W.C.
ForPropane Gas this appliance requires a minimum inlet pressure
of 11" W.C. and a manifold pressure of 10" W.C.
Always keep the replace area clear and free of combustible materials,
as well as gasoline and other ammable vapors and liquids.
Donotusethisapplianceifanyparthasbeenunderwater. Immediately
call a qualied service technician to inspect the appliance and to
replace any part of the control system and any gas control which
has been under water.





Operation
Lighting Instructions
See pages 16, 17 and 18.
Burner Adjustment
The L-Series DF is equipped with an adjustable burner, allowing you to
raise or lower the ames. To adjust the ames, locate the black knob
marked 'Hi-Lo', in the centre of the gas control valve (See Figure 32).
The front burners are not adjustable.
To raise the ame height, turn the black knob (located behind the
lower trim) counter-clockwise.
To lower the ame height, turn clockwise.


Figure 32. 'Hi-Lo' Adjustment on the L-Series DF's gas valve. Cleaning
When the replace is rst activated, there may be some smoking and
a visible lm may be left on the glass. This is a normal condition, and is
the result of burning of protective coatings on new metal.
Glass must be cleaned periodically to remove any lm (which is a
normal by-product of combustion) which may be visible. Film can
easily be removed by removing the door, as shown on page 12.
Handle the door carefully, and clean it with non-abrasive glass
cleaners. One of the most effective products is Kel Kem.
Silicone seals on inner door during initial ring will "off gas", leaving
a visual deposit of a white substance on combustion chamber walls.
This can easily be removed using normal household products.
Use a vacuum cleaner or whisk broom to keep the control
compartment, burner, and rebox free from dust and lint.
Linear Burners may be cleaned periodically with a vacuum to remove
soot or other contaminates.




Note: L-Series DF-I models (electronic ignition) do not
feature hi/lo adjustment.
'Hi-Lo' Adjustment Knob

Page 20
L-Series DF Gas Fireplace
Part No. XG0180
f i r e f e a t u r e
Maintenance
Gas Control Valve Troubleshooting L-Series DF-I
Manifold Pressure
Test Connection
Pilot Adjustment Screw
Inlet
Pressure
Power
Generator
Wall Switch
Figure 33. Sit Nova 820 gas valve.
Pilot Burner Adjustment
1. Locate Pilot Adjustment Screw. (See gure 33.)
2. Adjust pilot screw to provide properly sized ame as shown in
gure 34).
3. After installing or servicing, leak test with a soap solution with
main burner on. Coat pipe and tubing joints, gasket etc. with soap
solution. Bubbles indicate leaks. Tighten any areas where the
bubbles appear until the bubbling stops completely.
Figure 34. Pilot Burner.
Troubleshooting
The following is a troubleshooting chart of possible problems:
PROBLEM CORRECTIVEACTION
Noisy Pilot Flame Locate pilot adjustement screw on
gas control valve. Flame is decreased by
turning adjustment screw clockwise.
Pilot won’t ignite Disconnect remote wires and try to
light pilot. If pilot now works, remote
connections are faulty. Check wiring
diagram gure 33.
Main burner will 1. Check wiring (see gure 33).
not light 2. Check wall switch for proper con-
nection.
L-Series DF
If your replace still does not operate correctly, consult your dealer or
the manufacturer.
All service and repairs should be performed by a qualied
agency.
All spare parts, optional fans, and optional trim nishes are available
from your local dealer or the manufacturer.