Montigo H38DF ST Instruction manual

XG0207 Canadian Heating Products Inc. Langley, BC V4W 4A Montigo Del Ray Corp. Ferndale, WA 98248 092109
HL38DF-ST Shown
www.montigo.com
H38DF-ST Indoor
HL38DF-ST Indoor
Installation Operation & Maintenance Manual
Check local codes and read all instructions prior to installation.
H38DF-ST Gas Fireplace
For Your Safety:
Do not store or use gasoline or other flammable vapors and liquids in the
vicinity of this or any other appliance.
Safety Notice:
Glass doors on gas fireplaces are extremely hot while the fireplace is on and remain
hot even after the fireplace has been turned off. Safety screens are available and
can reduce the risks of severe burns.
®
C US
Warning:
Improper installation,adjustment,alteration,serviceor maintenancecan cause
injury or property damage. Refer to this manual. For assistance or additional
information consult a qualied installer, service agency or the gas supplier.
Warning:
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.
• Installer: Leave this manual
with the appliance.
• Consumer: Leave this
manual for future reference.

Page 2
H(L)38DF-ST See-thru indoor Gas Fireplace
Part No. XG0207 - 092109
Warning:
Read this manual before installing, operating or troubleshooting this
appliance. Please retain this owner's manual for future reference.
Congratulations
Congratulations on selecting a Montigo gas replace, an elagent
and well designed gas replace built to your specications. The
Montigo gas replace you have selected is designed to provide
the utmost in safety, reliability, and engineering standards.
As the owner of this new replace, you'll want to read and care-
fully follow all the instructions contained in this Installation,
Operations and Maintenance manual. Pay special attention to all
cautions, warnings, and Important warnings.
This owner's manual should be retained for future reference. We
suggest that you keep it with all your other important documents
and product manuals.
The information contained in this owner's manual, unless noted
otherwise, applies to all models, and gas control systems.
Your new Montigo gas replace will give you years of durable,
reliable use. Welcome to the Montigo family of gas replace
products.
Safety Alert Key:
• DANGER! Indicates a hazardous situation which, if not avoided will result in death or serious injury.
• WARNING! Indicates a hazardous situation which, if not avoided could result in death or serious injury.
• CAUTION! Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
• NOTICE: Used to address practices not related to personal injury.
•Important: Used to address practices not related to personal injury.
Congratulations
Safety Alert Key
Introduction............................................................................... 3
Installation
Installing and Framing the Fireplace.............................. 4
Installing the Gasline...................................................... 5
Vent Installation.............................................................. 5
Installation Requirements .................................. 5
Installing the Remote Switch ............................. 5
Vent Terminations .............................................. 6
  InstallingtheNailingange................................ 7
Top Vent Installation................................................8 - 10
Rear / Side Vent Installation.................................. 11 - 13
Power Vent Terminations................................. 13
 Finishingaroundthereplace...................................... 14
Fireplace Facing .............................................. 14
Mantels and Surrounds ................................... 14
Wiring ......................................................................... 15
Removing and Installing the Door................................ 16
Table Of Contents
Installing Logset ........................................................... 17
Installing Designer glass beads ................................... 18
Operation .........................................................................19 - 22
Maintenance ....................................................................22 - 24
Spare Parts .................................................................. 23
Troubleshooting............................................................ 24
Warranty ................................................................................. 25
Appendix
A. Termination Locations.............................................. 26
B State of Massachusetts / Amendment.................................. 27
Notes ..................................................................................... 28

Page 3
H(L)38DF-ST See-thru indoor Gas Fireplace
Part No. XG0207 -092109
Introduction
CAUTION!
Due to its high operating temperatures, the appliance
should be located out of traffic & 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 flammable materials should not be
placed on or near the appliance.
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.
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 H38DF-ST refers to all variations of the model above.
Sectionswhicharespecictoaparticularvariation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/CGAB-149.1
and .2 Gas Installation Code and local regulations. If the optional air-
circulatingfankit isinstalled,itmustbeelectricallygroundedinaccordance
with CSA C22.1 Canadian Electrical Code Part 1 and/or Local Codes.
Installations in the USA must conform to local codes, or in the absence
of local codes to the National Fuel Gas Code, ANSI Z223.1-1988. If the
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/NFPA 70-1987. See Appendix for installation
within the State of Massachusetts. Thisreplacemustcomplywith
NFPA-54 Chapter 10.
Thank You for choosing a Montigo Gas Fireplace.
About this Fireplace:
The H38DF-ST Series isanlineofreplace'swithastandardLogSet,
or with a Linear-style burner. Both are available in full stainless steel.
ThisreplaceisaTopVentOnly,andisavailableinthespecicmodels
below.
The H38DF-ST is rated for Natural Gas 34,000 Max. BTU/H (9.38)
Kilowatts Input in Natural Gas, and 33,000 Max. BTU/H (9.28) Kilowatts
in Liquid Propane.
► H38DF-ST; Top or Rear Vent convertible, Millivolt Pilot
► H38DF-ST-I; Top or Rear Vent convertible, Intermittent Pilot (HSI)
► H38DF-ST-F; Top or Rear Vent convertible, ( IPI Electronic Ignition).
The HL38DF-ST is rated for Natural Gas 34,000 Max. BTU/H (9.38)
Kilowatts Input in Natural Gas, and 33,000 Max. BTU/H (9.28) Kilowatts
in Liquid Propane.
► HL38DF-ST-I; Top or Rear Vent convertible, Intermittent Pilot (HSI)
► HL38DF-ST-F; Top or Rear Vent convertible, ( IPI Electronic Ignition).

Page 4
H(L)38DF-ST See-thru indoor Gas Fireplace
Part No. XG0207 - 092109
HL38DF-ST
Top - Top Vent *
10"
Top - Rear Vent
17 1/2”
Fronts 2"
Sides 1"
Floor 0"
Mantle ** 4"
H38DF-ST
10"
17 1/2”
2"
1"
0"
4"
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forH38DF-STmodelsareshownbelow:
Top View
Front View
Side View
Figure 1. Fireplace dimensions.
Clearances
The H(L)38DF-ST Series See-thru clearance to combustible materials
are:
*Clearancefromthetopofthereplacetoacombustible
ceilingwithinthereplaceenclosure.
** Refer to page 9.
5 1/2”5 1/2”
5 1/4”
L
Figure 2. Framing dimensions.
(Minimum 1" clearance must still be maintained around the vent
pipes, except on horizontal venting sections where the top of the pipe
must have a clearance of 2")
For protection against freezing temperatures, it is recommended that
outer walls of the chase be insulated with a vapour barrier. This will
reducethepossibilityofacold-airconvectioncurrentonthereplace.
Framing
1).Framethereplacecavity(thru-walldesign)accordingtoFigure 2.
2). Frame your installation, Figure 2a & 2b if the design incorporates
ashelfoverthereplace.
3).Oncecomplete,slidethereplaceintothecompletedcavity.
4). Next, tack four studs (Vertical, "broken line") in place, Figure 2c.
5).Securethereplaceinpositionbynailing/screwingthereplace
angeintothesecleats.
N
O
M
M
O
H38DF-ST
40 23
3
/ 4
N
3
/ 4
H38LDF-ST
23
3
/ 4
42
1
/
2
42
1
/ 23
/ 4
40
Figure 2a. Framing dimensions. (Top Vent)
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.
361
/
2343
/
411
/
4241
/
217
/
8353
/
471
/
8331
/
2
HL38DF-ST 1
/
211
/
4241
/
2133 71
/
8
3
/ 4237
/
8353
/
41
/
2
23
H38DF-ST 373
/
4
3
/ 4
37 36
ABCDEFGHIL
34
5
5
8
8
JK
17 1/
2
min
PELS
90 elbow
Shelf
RHS101
46”min

Page 5
H(L)38DF-ST See-thru indoor Gas Fireplace
Part No. XG0207 -092109
Installation
Installing The Gas Line
ThegaslinemustbeinstalledbeforenishingtheH(L)38DF-ST Series
Fireplace. Natural Gas 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 5b.
•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.
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).
Figure 3
.
Gas line access.
Figure 2c. Back frame dimensions.
41”
Figure 2b. Framing dimensions. (Rear Vent)
Installing The Remote Switch
The H(L)38DF-ST are equipped with a remote-operated valve for use
with a wall switch. See Figure 21 for information on wiring the switch.
The valve is pre-wired and generates its own power. DO NOT con-
nect any external power to it.
Note: Theswitchlocationmustnotexceed30'fromthereplace.
Vent Installation
This section covers the installation of direct venting and terminations.
Installation Requirements
 H(L)38DF-ST Seriesreplacesarecertied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".
 UseonlycertiedMontigoventcomponents.(Useofotherpartswillvoid
theMontigowarranty,andmayimpedetheoperationofthereplace.)
 All joints must be secured with a minimum of two screws per joint
 Vent terminations must not be recessed in walls or siding
 Horizontal runs must be supported by a minimum of two supports per hori-
zontal 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")
Venting components can be used in any combination of solid/rigid
Solid vent sections may be cut less than half way from the
tapered end
 Venting components can be used in any combination of solid/rigid pipe or
expipeandinanyorientation(Maleconnectorscanfaceinanydirection).
10
min.
shelf
RHS101
12
max.
33 1/2”

Page 6
H(L)38DF-ST See-thru indoor Gas Fireplace
Part No. XG0207 - 092109
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")
Installing Heat Guards over Terminations
Figure 4a. Installing a PTO termination.
Figure 4b. Installing a PTO termination with the MSR frame.
Figure 4c. Installing a PTO termination with the MOSR frame.
Figure 4d. Installing a PTO termination heat guard.
Cautions:
 Vent terminations can be very hot. If the termination is less than 7 feet
above a public walkway, it should be fitted with a certified Montigo
Heat Guard. (Part no. PTKOG).
Do not obstruct, or attempt to conceal the vent termination.
These actions will affect the operation of the fireplace, and may
be hazardous.
In heavy snow areas, take extra care to prevent snow buildup
from obstructing the vent termination.
Use Montigo Vinyl Heat Shield (Part no. VSS) when using on
applications with vinyl siding to guard against possible damage.
CAUTION:
Do not obstruct, or attempt to conceal, the vent termination.
These actions will affect the operation of the fireplace, and may
be hazardous.
In heavy snow areas, take extra care to prevent snow buildup
from obstructing the vent termination.
CAUTION!
Duetoitshigh operatingtemperatures,theapplianceshould
belocated outoftraffic &away fromfurniture 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 flammable materials should not be
placed on or near the appliance.

Page 7
H(L)38DF-ST See-thru indoor Gas Fireplace
Part No. XG0207 -092109
Figure 7. Installing the Nailing Flange Extension.
Part No. H38074
1. Ensure that the two long mounting brackets are facing the bottom
ofthe termination.(See inset).Thiswill provide more heatprotection
at the top of the termination, where temperatures are highest.
2. Attach to the faceplate of the termination using four sheet metal
screws.
Figure 5. Installing the VSS Vinyl Shield heat guard.
Installing The Standoffs
To avoid elevated mantel temperatures, all H(L)38DF-ST Series
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 6. Installing the standoff's.
Installing the Nailing Flange
Extension
Oncethereplaceisplacedintotheframedopening,thesupplied-
nailingextentionmustplacedalongthetopedgeofthereplace,and
nailed in place to the framing, as illustrated below. Fasten the steel
lintel is in place, (Part No. H38074) see Figure 8, the supplied nailing
extensionmustbeplacedalongthetopedgeofthereplaceand
securely fastened in place to the metal lintel, and combustible wood
framing.
Note:Thenailingangeextensioncanbesubstitutedwithapieceof
NON-Combustiblematerialofthesamesizeandthermalcharacteris-
tics, ie: cement board or equivilent.
Installation
Installing Heat Shield for Vinyl Siding
Converting the H(L)38DF-ST from
Top Vent / Side Vent
Top Vent
H(L38DF-ST Top / Side Vent
Use the following instructions to convert an H(L)38DF-ST for Top Vent
or Side Vent use.
Figure 8. Installing the Top Vent / Side ue covers.
Top Vent
1. Install the 5" inner ue
collaronthetopueoutlet
and secure the cap in
place with four (4) screws,
as shown in Figure 8.
2. Install the 8" outer ue
collar on the top flue
outlet, and secure it with
ve(5)screws,asshown
in Figure 8.
3. Install the flue gasket
material and ue cover
plate on the side vent
outlet . Fasten the cover
plate(s) with four (4)
and ve (5) screws, as
illustrated.
Figure 8a. Installing the Side Vent / Top ue covers.
Side Vent
1. Install the 5" inner ue
collar on the side ue
outlet and secure the
cap in place with four
(4) screws, as shown in
Figure 8a.
2. Install the 8" outer ue
collar on the side ue
outlet, and secure it with
ve(5)screws,asshown
in Figure 8a.
3. Install the flue gasket
material and ue cover
plate on the top vent
outlet. Fasten the plate
with four (4) screws,
and ve (5) crews as
illustrated.
5”Inner
Flue Collar
8”Outer
Flue Collar
5”Inner Flue
Cover Plate
8”Outer Flue
Cover Plate
5”Inner Flue
Cover Plate
8”Outer Flue
Cover Plate
8”Outer
Flue Collar
5”Inner
Flue Collar

Page 8
H(L)38DF-ST See-thru indoor Gas Fireplace
Part No. XG0207 - 092109
42”
46”
A
C
B
Installation Of Top Vent DV
A complete H(L)38DF-ST ventsystemmaycompriseuptovediffer-
ent types of components:
A - Termination PTO-3 (3" length)
PTO-3F (3" length)
B - Stucco Kits MSR (stucco frame)
MOSR (stucco can)
C - Flex sections PFL-1 (12" section)
PFL-2 (24" section)
PFL-3 (36" section)
PFL-4 (48" section)
D - Solid sections PEXT-1 (12" section)
PEXT-2 (24" section)
PEXT-3 (36" section)
PEXT-4 (48" section)
E - Elbows PEL-90MM (m/m 90°
elbow)
PEL-90FF (f/f 90° elbow)
Figure 10. Short Horizontal Installation.
Example:
A10'sectionandanelbowusedinconjunctionwith3ft.exsection
(PFL-3)will,whenextendedinavefootchase,allowforamaxi-
mum 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 11 & 12.
"D"exsectionsand"E"solidsectionsmaybeusedinconjunction
with one another to obtain different possible horizontal length instal-
lations. NOTE: Flex section must not exceed maximum horizontal
length of 42". See Figure 13.
WARNING:
Ensure Vent Heat Shield, RHS 8 as shown in Figure10 & 12 has
MIN. 1" clearance on bottom and sides from framing. Top must
have MIN 2" Clearance as shown.
Figure 9. Top Vent Venting Graph.
Top Vent Venting Requirements
Before you install any venting, you must determine whether the
venting run will be acceptable. Unacceptable venting can affect the
replace'scombustion.
for installations with horizontal venting runs of 0-16 feet, use the
vent graph, as described below
the maximum horizontal vent run is 16 feet.
The Rear Vent Venting Graph (NG & LP)
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,
Figure 9withan'X'.
Ifthe'X'fallsonorabovethetopboundaryoftheshadedarea,the
installation is acceptable.
Example A: (Acceptable Installation)
If the vertical dimension from the hearth is 114", and the hori-
zontalruntothewallangeoftheventterminationis168",this
would be an acceptable installation.
Example B: (Unacceptable Installation)
Iftheverticaldimensionfromtheoorofthereplaceis48"and
thehorizontalruntothewallangeoftheventterminationis72",
this would NOT be an acceptable installation.
Example C: (Unacceptable Installation)
Iftheverticaldimensionfromtheoorofthereplaceis60"and
thehorizontalruntothewallangeoftheventterminationis
144", this would NOT be an acceptable installation.
Power Vent models, LDVPV47
EDVRSPV58, and EDVWSPV58
to be used within the shaded area of
graph. (See Index of this guide for
applicable Product page).
Installation
RHS 101
Insulated
Sleeve
CRS101
50”
Min.
42”Min.

Page 9
H(L)38DF-ST See-thru indoor Gas Fireplace
Part No. XG0207 -092109
Installation
Figure 12. Retracted Installation.
Figure 11. Extended installation.
Figure 13. Horizontal ex installation.
RHS 8
RHS 8
1 MIN
1 MIN
1 MIN. Both
sides Typical
RHS8 Heat
Shield
Figure 14. Heat Shield. Install by sliding over the vent pipe where it
passes through combustible construction.
Figure 15. RHS101 Installation. (Install by sliding over vent pipe where
it passes through the combustible construction.
Framing
Drywall
RHS101 Heat Shield,
Inner Section.
Vent from fireplace
RHS101 Heat Shield,
Outer Section.
Termination
B: Verrical (Through The Roof) Installation
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30feetabovereplace.
Note: Flame characteristics will change if the maximum vent
height is used.
Minimum clearance to combustible construction around the
vent pipe is 1" on all sides must be maintained, except on hori-
zontal venting where the top of the pipe must have a clearance of
at least 2".
A - Termination PVTK-1
B - Flex sections PFL-1 (12" section)
PFL-2 (24" section)
PFL-3 (36" section)
PFL-4 (48" section)
C - Solid sections PEXT-1(12"section)
  PEXT-2(24"section)
  PEXT-3(36"section)
  PEXT-4(48"section)
D - Support Ring & Plate PSPXT-7(8"dia.)
E - Firestop PS-8 (8" dia.)
F - Roof Flashing PRF-7 (1/12 - 7/12 pitch)
PRF-12 (7/12 - 12/12 pt.)
RHS101
Insulated Sleeve
CRS101
42”Min.
50
Min.

Page 10
H(L)38DF-ST See-thru indoor Gas Fireplace
Part No. XG0207 - 092109
Installation
Figure 16. Straight, vertical venting. * If reducing to 4"/7" venting see
Figure 19.
32’ max
A maximum of two offsets (each offset has two 90° bends) may
be made if the length of the offsets does not exceed 25% of the
vertical vent height, when measured center to center of piping.
Example: Typical vent installation.
   30'verticalvent
   2-2'offsetsrequired
   25%of30'=7-1/2'max.offsetallowed
 Thisventingcongurationmeetsrequirements.
Figure 17. Vertical venting using 1 offset (1 offset= two 90° bends) *
If reducing to 4"/7" venting see Figure 19.
32’ max
Figure 18. Vertical venting using 2 offsets (1 offset= two 90° bends).
* If reducing to 4"/7" venting see Figure 19.
32’ max
Part Size 5"/8" Venting 4"/7" Venting
A - Termination n/a PVTK-1 MVTK-1
B - Flex sections 12" length PFL-1 MFL-1
24" length PFL-2 MFL-2
36" length PFL-3 MFL-3
48" length PFL-4 MFL-4
C - Solid sections 12"length PEXT-1 MEXT-1
 24"length PEXT-2 MEXT-2
 36"length PEXT-3 MEXT-3
 48"length PEXT-4 MEXT-4
D - Support Ring
& Plate   PSPXT-8 MSPXT-7
E - Firestop PS-8 FS-7
F - Roof Flashing (1/12-7/12 pt.) PRF-7 MRF-7
(7/12-12/12 pt.) PRF-12 MRF-12
G - Adaptor/ (5"/8" to 4"/7") PVA5487
Vent Reducer

Page 11
H(L)38DF-ST See-thru indoor Gas Fireplace
Part No. XG0207 -092109
33 1/2”
A
C
B
12”
Installation
Side Vent Venting Requirements
If your installation requires more than 12" of horizontal venting, some
vertical lift is required. Use the vent graph below to determine an
acceptableventrun.Unacceptableventingcanaffectthereplace's
performance.
the maximum horizontal vent run is 16 feet
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
Figure 19withan'X'.
Ifthe'X'fallsonorabovethetopboundaryoftheshadedarea,the
installation is acceptable.
Example A: (Acceptable Installation)
If the vertical dimension from the hearth is 54", and the horizon-
talruntothewallangeoftheventterminationis32",thiswould
be an acceptable installation.
Example B: (Acceptable Installation)
If the vertical dimension from the hearth is 108" and the hori-
zontal run to the wall flange of the vent termination is 130", this
would be an acceptable installation.
Example C: (Unacceptable Installation)
If the vertical dimension from the floor of the fireplace is 60" and
the horizontal run to the wall flange of the vent termination is
114", this would NOT be an acceptable installation.
Figure 19. HL38DF -ST Side Vent Venting Graph
Power Vent models, LDVPV47
EDVRSPV58, and EDVWSPV58
to be used within the shaded area of
graph. (See Index of this guide for
applicable Product page).
A - Termination PTO-3
PTO-3F
B - Stucco Kits MSR (stucco frame)
MOSR (stucco can)
D - Flex sections PFL-1 (12" section)
PFL-2 (24" section)
PFL-3 (36" section)
PFL-4 (48" section)
E - Rigid sections PEXT-1 (12" section)
PEXT-2 (24" section)
PEXT-3 (36" section)
PEXT-4 (48" section)
F - Extensions PXT- 5 (5" section)
PXT-10 (10" section)
G - 90° elbow PEL-90F/F
PEL-90M/M
H - Heat Shield RHS101 ( for 5"/8" venting)
I - Heat Shield RHS 8 (for Top Venting)
Horizontal Vent Installation
Vent systems that terminate through a wall may comprise up to seven
different components:
Short Congurations:
Forinstallationsstraightthroughthewall,useanPTO-3/-3Ftermina-
tionandPXT-5orPXT-10toachievethedesiredlength.Themaxi-
mum horizontal vent run with no vertical lift is 12". See Figure 20.
Figure 20. Short horizontal installation.
33 1/2”

Page 12
H(L)38DF-ST See-thru indoor Gas Fireplace
Part No. XG0207 - 092109
Installation
Long Vent Runs:
For longer or more complex vent runs, vertical lift is required. First
ensure that the planned run is acceptable using the Vent Graph. Plan
out the required components using the chart above. You may be able
to use fewer components using the chart on Page 10.
Figure 21. Heat Shield for short horizontal installation. Install by slid-
ing over the vent pipe where it connects to the termination.
Example:
A10'sectionofrigidpipeanda90°elbowmaybeusedinconjunc-
tionwitha3ft.exsection(PFL-3)will,whenextendedina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 22.
"D"exsectionsand"E"solidsectionsmaybeusedinconjunction
with one another to obtain different possible horizontal length instal-
lations. NOTE: Flex section must not exceed maximum horizontal
length of 3 feet, and for this application the top clearance is to the
ceiling.
RHS8
Figure 22. Extended horizontal installation using a combination of
rigid and ex venting.
Vertical Vent Installations
 Maximumventheightis30feetabovereplace.
Note: Flame characteristics will change if the maximum vent
height is used.
Minimum clearance to combustible construction around the
vent pipe is 1" on all sides must be maintained, except on hori-
zontal venting where the top of the pipe must have a clearance of
at least 2".
1. Straight Vertical Installation
Figure 23. Straight, vertical venting.
PEXT
Solid Sectio
n
2. Offset Vertical Installations
A maximum oftwo offsets (each offset has two 90° bends) may be
made if the length of the offsets does not exceed 25% of the vertical
vent height, when measured center to center of piping.
Example: Typical vent installation.
30' vertical vent
2 - 2' offsets required
25% of 30' = 7-1/2' max. offset allowed
This venting configuration meets requirements.
Heat Shields
Duetohighuetemperatures,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,
vent clearances can be maintained at 1". 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 inside the wall cav-
ity. 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 21.

Page 13
H(L)38DF-ST See-thru indoor Gas Fireplace
Part No. XG0207 -092109
Figure 26. Reduced Vertical venting application from 5"/8" to 4"/7".
Reduced Vertical Installation
(H38DF-ST Only)
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 instal-
lation exceeds 12 feet and terminates through the roof, and if the
verticalventreducerisusedwiththefollowingventingconguration.
Installation
Figure 24. Vertical venting with 1 oset (1 oset= two 90° bends).
PEXT Solid
Section
Figure 25. Vertical venting with 2 osets (1 oset= two 90° bends).
Installing The Horizontal &
Vertical Exterior Power Vent
A Power Vent is required where the Termination is located too far
away from the gas fireplace and/or if the vent run is beyond the scope
of this document, or 8he specications recommend vent augmenta-
tion. There are four 5/7 Power Vent models available. These Power
Vents are required for Superior venting, safe operation & years of
trouble free operation.
The available Montigo Power Vent models are:
LDVPV47/58 (Linear, Interior In-line Power Vent, document, XG0700).
EDVPV47/58 (External Power Vent Module, document, XG0750).
EDVRSPV47/58 (Exterior Vertical Roof mount stainless steel Power
Vent system, document, XG1303)
EDVWSPV47/58 (Exterior Horizontal Wall mount stainless steel Power
Vent system, document, XG1302).

Page 14
H(L)38DF-ST See-thru indoor Gas Fireplace
Part No. XG0207 - 092109
Installation
Non-Combustible
Facing Material
Header
Drywall/
Sheetrock
6”
6”
3”
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 27. Side wall clearances are 0".
Combustible surrounds may be installed with 0" clearance to the side
ofthereplaceasshowninFigure 27.
Fireplace Facing
Whenselectingthenishmaterialforyourreplace,itisimportant
to remember the following: THE OPENING MUST NOT BE OB-
STRUCTED IN ANY WAY - to do so restricts the air supply for
the control compartments and heat exchanger it also prevents
access for servicing controls.
Thefaceofthereplacemaybepaintedtomatchtheroomdecor,
provided you use a heat-resistant paint. 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. When using a
tile facing, It is required not to tile over the outside frame of the
replace, as this will obstruct the door removal. See Figure 27.
Mantels & Surrounds
NOTE: Mantelclearancesareforrehazardpreventiontocombus-
tible 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.
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 melt-
ing, deformation, discoloration or premature failure of T.V. and radio
components.
Figure 27 Combustible mantles and facings.
Figure 29. Combustible surrounds. Top view.
Figure 28. Combustible facings materials. (Both Sides Typical)
Non-Combustible
Facing Material

Page 15
H(L)38DF-ST See-thru indoor Gas Fireplace
Part No. XG0207 -092109
Installation
Wiring
Gas Control and Pilot Wiring
Figure 31. Wiring for the H(L)38DF-ST-I with Honeywell gas control
and pilot.
H(L)38DF-ST-I
Honeywell (Q3450)
Pilot Assembly
Pilot Electrical
Harness Connector
Honeywell Gas
Control (SV9501M)
Gas Control
Connector
Junction Box
115VAC
24VAC
40 VA
Transformer
Black
White
Green
Gnd Screw
Wall Switch
Fan Plug
Receptacle
Wiring for the optional Fan Kit
The H(L)38DF-STreplace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 32. Wiring schematic for optional fans.
G
L2-WH
L1-BLK
p g
Quick Connect
lu to motor
5/1/60 Supply
G L1 L2
H(L)38DF- ST
L42DF-ST
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.
Donotoperatethisreplacewithouttheglassdoor,orwitha
broken glass door.
WARNING!
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.

Page 16
H(L)38DF-ST See-thru indoor Gas Fireplace
Part No. XG0207 - 092109
Removing and Installing
the Door
Removing the door:
TheH(L)38DF-STSeriesdoors areremovedinafewsimple steps.Follow
these Steps below to remove the Horizontal access panel, unlatch the
door buckles and, remove the door. Replace in reverse order.
Figure 34a. Loccate the door buckles. (Both Sides Typical)
Door Latch Hook
Door Latch Slot
Hand-hold
Release the Door Buckles
Figure 34. Removing and installing the the Horizontal Acess Panel
Locate the Door Buckles:
Figure 34b. Door buckle Tool
1
Step 4:
Firmly grasp hand-hold
end of Door buckle tool
and place the machined
end in the slot under door
frame. (as shown)
Figure 34c.
Step 2:
Step 3:
Step 1:
Remove the Horizontal cover
byplacingngersinbothnger
holes, then pushng away from
you and lifting out. Place it
aside during maintenance or
cleaning.
Install in reverse order.
Installed Gas
Valve Cover
Finger Holes
Remove the Horizontal Access Panel:
Installation
To install the doors, hook the top edge of the door frame into place.
Lower the door into position and follow the previous steps shown in
reverse order. Install the second door as described above.
Installing the Doors:
2
Step 5:
Ensurethetoolisrmly
in the lower end of the
slot, (as shown), Then pull
toward you (Caution: hold
the tool securely).
3
Step 6:
Pull hard if necessary to
release the spring ten-
sion. (Caution: The latch
springs back with force,
hold the tool securely).
4
Step 7:
Remove the tool from
the latch slot. Ensure the
latches are hanging freely,
the hook end is released
from the bottom of the door.
(Repeat all 4-steps for the
remaining latches).
Figure 34d.
Figure 34e.
Figure 34f.
Step 8:
Grasp the Door on either side, usually midway and lift upward, lift
thedoorcarefullyupandawayfromthefrontofthereplace.See
Figure 34g. Placethe Door asideina safe placewhile maintenance
and / or cleaning is being performed.
Figure 34g. Removing and installing the glass doors. (Both Sides
Typical)
Removing the Door:

Page 17
H(L)38DF-ST See-thru indoor Gas Fireplace
Part No. XG0207 -092109
Installation
Figure 36a. (Place Logs' "A" on Left & Right stands).
Installing the Logs and Embers
Bottom Logs
The H38DF-ST issuppliedwitheight(8)brelogs.Thetwosmall
bottom logs ("A" ) are mounted on the burner grate by placing them
diagonally onto the supplied Log stands. The long Front / Back logs
("B") are placed against the grate as shown in Figure 36b. Note:
When placing logs, arrange Logs "B" as not to cover Burner holes.
Top Logs
Next are the logs "C" which are placed diagonally, as shown in
Figure 36c. The last Logs "D" are then mounted on top of logs "A" as
shown in Figure 36d.
WARNING: If logs are not placed properly, excessive sooting will result.
Figure 36c. Log Installation. (Place Logs' "C" on-top of Logs "A".
Indentations on-top of Logs' "A"
Figure 36b. (Place Logs' "B" as shown, in front of Right-hand "A",
and behind Left-hand "B".
Log A
Log B
Log C
Log A
Log B
Log C
Figure 36d. Completed Installation.
Log D
Log D
Figure 36. (Empty rebox showing the Left & Right stands).
Front of Fireplace
Burners
Log Stand
Log Stand
Burner holes (front & back burner),
note hole pattern when placing logs
Air Inlets
H38DF-ST
Installing the Ember Material
The ember material is supplied in two packages. Place the material
evenly,forwardofbothLogstands,underlogs'A'and'B',alsofor-
wardfromLogs'C'&'D'.Refertogure36b.Ensuretheburnerholes
are free of ember material after placing the embers.

Page 18
H(L)38DF-ST See-thru indoor Gas Fireplace
Part No. XG0207 - 092109
Installation HL38DF-ST
Installing the HL38DF-ST Glass
Beads and Optional River Rocks
Beads
The HL38DF-STreplaceissuppliedwithDesignerGlassbeads.
Remove the Door and trim as shown in the previous Instruction.
Follow these instructions to ensure all parts are removed or replaced
asrequired.OncetheTrimandglassdoorsareremovedplacethe
marbles randomly across the pan and the burners as described in
Figure 38 to 38d.
Note: (N.G.) Natural Gas models, Only cover the Optional
burner covers with one layer of designer beads.
Figure 38.Installation of the Optional burner covers , (end to end;
place evenly).
Figure 38a. Installation of the designer beads. (Ensure one layer of
beads covers the burner and pilot covers.
Figure 38b.Spreading designer beads evenly .
Propane HL38DF-STreplace have the option of installing the
optional cultured rocks or designer glass beads. As described below
(Propane gas), the designer beads or cultured rocks cannot cover the
burners.Doingsoproducesanundesireable/unevenamepattern,
and eventual sooting.
www.montigo.com
Note: (LP gas) Ensure the optional river rocks or designer
glass beads do not cover the Burners.
Figure 39c.Completed glass bead installation.
Figure 38d. Operating Natural gas replace with one layer of de-
signer glass beads.
Figure 40.Completed glass bead installation. (Note: place glass
beads on top of mesh pilot cover.
Figure 40a. Operating Propane gas replace with designer glass
beads surrounding burner tray.
Optional River Rocks
The HL38DF-STreplacehastheoptionofinstallingthecultured
rocks which mimic real stone. These may be spaced at random, or
in a visual pattern of your preference. See the Montigo web site for
photographs and ideas.
www.montigo.com

Page 19
H(L)38DF-ST See-thru indoor Gas Fireplace
Part No. XG0207 -092109
Operation - Model H38DF-ST
H38DF-ST
WARNING: If you do not follow these instructions exactly, a re or explosion may result
causing property damage, personal injury or loss of life.
QIf 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:
QDo not try to light any appliance.
QDo not touch any electrical switch; do not use any phone
in your building.
QImmediately call your gas supplier from a neighbour's
phone. Follow the gas supplier's instructions.
To Turn Off Gas To Appliance:
3. Push in gas control knob slightly and turn clockwise to
"Off". Do not force.
4. Replace the lower Horizontal access panel.
1. Turn off remote switch.
2. Lift out the lower Horizontal access panel.
1. STOP! Read the safety information above on this label.
2. Lift out the lower Horizontal access panel.
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.
QIf knob does not pop up when released. Stop and
immediately call your service technician or gas
supplier.
QIf the pilot will not stay lit after several tries, turn the gas
control knob to "OFF" and call your service technician
or gas supplier.
8. Push in gas control knob and turn
counter-clockwise to "ON."
9. Replacethe lower Horizontal access
panel.
Lighting Instructions:
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 20
H(L)38DF-ST See-thru indoor Gas Fireplace
Part No. XG0207 - 092109
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 H38DF-ST-I
H38DF-ST-I
WARNING: If you do not follow these instructions exactly, a re or explosion may result
causing property damage, personal injury or loss of life.
Gas
Inlet
Gas Control Switch
Shown in "On" Position
HL38DF-ST-I