33LDVT LDVT Series Direct Vent Gas Fireplace

Product Information

The Builder Top Vent Direct Vent is a gas fireplace available in
models 33LDVT, 36LDVT, 39LDVT, and 43LDVT. It is designed to
provide warmth and ambiance to your space. The fireplace is
certified and should be installed and serviced by a qualified
installer, service agency, or gas supplier.

Product Usage Instructions

1. Before starting installation, read all instructions and
   warnings carefully to ensure safe usage and to avoid any fire
   hazards.

2. Locate the fireplace in an area away from high traffic areas,
   furniture, and draperies, as it emits high temperatures.

3. Ensure that children and adults are aware of the high surface
   temperatures and should stay away from the fireplace to prevent
   burns or ignition of clothing.

4. Supervise children carefully in the same room as the fireplace
   due to the high glass surface temperature.

5. Do not modify the fireplace under any circumstances. Any parts
   removed for servicing should be replaced before operating the
   fireplace again.

6. Installation and repairs must be done by a qualified installer,
   service agency, or gas supplier. It is recommended to have the
   fireplace inspected annually by a professional service person. More
   frequent cleaning may be required due to lint and dust
   accumulation.

7. Keep the control compartments, burners, and air passages clean
   and free of dust and lint. Always turn off the gas valve and pilot
   light before cleaning the fireplace.

8. Check the venting system (chimney) at least once a year and
   clean if necessary.

9. Avoid placing combustible materials, gasoline, flammable
   vapors, and liquids near the fireplace. Do not use the fireplace as
   a drying rack for clothing or hang Christmas stockings or
   decorations on or around it.

Following these usage instructions will help ensure safe and
efficient operation of the Builder Top Vent Direct Vent gas
fireplace.

Builder Top Vent

Direct Vent

Models: 33LDVT, 36LDVT

INSTALLER/CONSUMER SAFETY INFORMATION

39LDVT, 43LDVT

PLEASE READ THIS MANUAL BEFORE INSTALLING AND USING APPLIANCE
WARNING! IF THE INFORMATION IN THIS MANUAL IS NOT FOLLOWED EXACTLY, A FIRE OR EXPLOSION MAY RESULT CAUSING PROPERTY DAMAGE, PERSONAL INJURY OR LOSS OF LIFE.

FOR YOUR SAFETY Installation and service must be performed by a qualified 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 electric switch; do not use any phone in your building. · Immediately call your gas supplier from your neighbor’s phone. Follow the gas suppliers instructions. · If you cannot reach your gas supplier call the fire department.
DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE.

Installation Instructions and Homeowner’s Manual

DESIGN

CERTIFIED

CERTIFIED

INSTALLER: Leave this manual with the appliance. CONSUMER: Retain this manual for future reference.
10007852 7/08 Rev. 15

LDVT Series Direct Vent Gas Fireplace

Table of Contents
PLEASE READ THE INSTALLATION & OPERATING INSTRUCTIONS BEFORE USING THIS APPLIANCE. Thank you and congratulations on your purchase of a MHSC fireplace. IMPORTANT: Read all instructions and warnings carefully before starting installation. Failure to follow these instructions may result in a possible fire hazard and will void the warranty.

Installation & Operating Instructions
General Venting Information
Operating Instructions
Maintenance Replacement Parts Optional Accessories
Warranty Energuide

General Information, Warnings, Cautions…………………………………………………………..3 Requirements for the Commonwealth of Massachusetts ……………………………………..4 Fireplace Dimensions ……………………………………………………………………………………..5 Locating Your Fireplace …………………………………………………………………………………..6 Clearance to Combustibles………………………………………………………………………………6 Mantels …………………………………………………………………………………………………………6 Hearth …………………………………………………………………………………………………………..7 Framing & Finishing ………………………………………………………………………………………..7 Final Finishing………………………………………………………………………………………………..7 Gas Specifications ………………………………………………………………………………………….7 Air Shutter Adjustment …………………………………………………………………………………….7 Gas Inlet and Manifold Pressures……………………………………………………………………..7 High Elevations ………………………………………………………………………………………………8 Gas Line Installation ……………………………………………………………………………………….8 Remote Switch Installation ………………………………………………………………………………8 Alternate Switch Location ………………………………………………………………………………..8 EB-1 Electrical Box …………………………………………………………………………………………9 Electronic Gas Control Valve …………………………………………………………………………..9 Valve Wiring Diagrams…………………………………………………………………………………..10 General Venting …………………………………………………………………………………………… 11 General Venting Information-Termination Location ……………………………………………12 General Information on Assembling Vent Pipes ………………………………………………..13 How to Use the Vent Graph …………………………………………………………………………..14 Vertical Sidewall Applications & Installation ……………………………………………………..14 Below Grade Installations.. …………………………………………………………………………….18 Vertical Through-the-Roof Applications & Installations ……………………………………….19 Venting Components …………………………………………………………………………………….22 Glass Information………………………………………………………………………………………….23 Louvre Removal……………………………………………………………………………………………23 Window Frame Assembly Removal …………………………………………………………………23 Glass Cleaning……………………………………………………………………………………………..23 Installation of Logs, Lava Rock & Ember Material …………………………………………….24 Flame & Temperature Adjustment……………………………………………………………………26 Flame Characteristics ……………………………………………………………………………………26 Lighting & Operating Instructions (SIT 820 Valve) ……………………………………………..28 Lighting & Operating Instructions (SIT 822 Valve) ……………………………………………..29 Lighting & Operating Instructions (AF4000 Valve) ……………………………………………..30 Troubleshooting Gas Control System (SIT 820 Valve) ……………………………………….31 Troubleshooting Gas Control System (SIT 822 Valve) ……………………………………….32 Troubleshooting Gas Control System (AF4000 Valve) ……………………………………….33 American Flame Gas Control System Error Codes ……………………………………………35 Fuel Conversion Instructions ………………………………………………………………………….36 Cleaning the Standing Pilot Control System ……………………………………………………..38 …………………………………………………………………………………………………………………..39 Fan Kits……………………………………………………………………………………………………….42 Wiring Instructions ………………………………………………………………………………………..43 Ceramic Refractory Kits …………………………………………………………………………………43 Remote Controls …………………………………………………………………………………………..43 Optional Trim Kits………………………………………………………………………………………….44 Screen Door Kits…………………………………………………………………………………………..44 Filigree Louvre Kit …………………………………………………………………………………………44 …………………………………………………………………………………………………………………..47 …………………………………………………………………………………………………………………..48

2

10007852

LDVT Series Direct Vent GaS Fireplace

Installation & Operating Instructions

This gas fireplace should be installed by a qualified installer, preferably NFI or WETT (Canada) certified, in accordance with local building codes and with current CSA-B149.1 Installation codes for Gas Burning Appliances and Equipment. For USA Installations follow local codes and/or the current National Fuel Gas Code. ANSI Z223.1/NFPA 54.
FOR SAFE INSTALLATION AND OPERATION PLEASE NOTE THE FOLLOWING:
1. This fireplace gives off high temperatures and should be located out of high traffic areas and away from furniture and draperies.
2. Children and adults should be alerted to the hazards of the high surface temperatures of this fireplace and should stay away to avoid burns or ignition of clothing.
3. CAUTION: Due to high glass surface temperature children should be carefully supervised when in the same room as fireplace.

4. Under no circumstances should this fireplace be modified. Parts removed for servicing should be replaced prior to operating this fireplace again.
5. Installation and any repairs to this fireplace must be performed by a qualified installer, service agency or gas supplier. A professional service person should be contacted to inspect the fireplace annually. More frequent cleaning may be required due to excess lint and dust from carpeting, bedding material, etc.
6. Control compartments, burners and air passages in this fireplace should be kept clean and free of dust and lint. Make sure that the gas valve and pilot light are turned off before you attempt to clean this fireplace.
7. The venting system (chimney) of this fireplace should be checked at least once a year and if needed your venting system should be cleaned.
8. Keep the area around your fireplace clear of combustible materials, gasoline and other flammable vapour and liquids. This fireplace should not be used as a dry-ing rack for clothing, nor should Christmas stockings or decorations be hung on or around the fireplace.
9. Under no circumstances should any solid fuels (wood, coal, paper or cardboard etc.) be used in this fireplace.
10. The flow of combustion and ventilation air must not be obstructed in any way.
11. When the fireplace is installed directly on carpeting, vinyl tile or any combustible material other than wood, this fireplace must be installed on a metal or wood panel extending the full width and depth of the fireplace.

12. This fireplace requires adequate ventilation and combustion air to operate properly.
13. This fireplace must not be connected to a chimney flue serving a separate solid fuel burning fireplace.
14. When the fireplace is not in use it is recommended that the gas control valve be left in the OFF position.
15. These units have been approved for bedroom use.
33LDVT / 36LDVT / 39LDVT / 43LDVT Certified To
ANSI Z21.88b-2008 / CSA 2.33b-2008 Vented Gas Fireplace Heaters
WARNING: Check with your electronics manufacturer before installing a television or other electronic device above this fireplace.
This appliance may be installed in an aftermarket permanently located, manufactured home or mobile home, where not prohibited by local codes. This appliance is only for use with the type of gas indicated on the rating plate. This appliance is not convertible for use with other gases, unless a certified kit is used. The LDVT has been approved for mobile home installations.
IMPORTANT: PLEASE REVIEW THE FOLLOWING CAREFULLY Remove any plastic from from parts before turning the fireplace ON. It is normal for fireplaces fabricated of steel to give off some expansion and/or contraction noises during the start up or cool down cycle. Similar noises are found with your furnace heat exchanger or car engine. It is not unusual for your gas fireplace to give off some odor the first time it is burned. This is due to the curing of the paint and any undetected oil from the manufacturing process. Please ensure that your room is well ventilated-open all windows. It is recommended that you burn your fireplace for at least ten (10) hours the first time you use it. If the optional fan kit has been installed, place the fan switch in the “OFF” position during this time.
Proposition 65 Warning: Fuels used in gas, woodburning or oil fired appliances, and the products of combustion of such fuels, contain chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. California Health & Safety Code Sec. 25249.6

10007852

3

LDVT Series Direct Vent Gas Fireplace

Installation & Operating Instructions

Requirements for the Commonwealth of Massachusetts
All gas fitting and installation of this heater shall only be done by a licensed gas fitter or licensed plumber.
For all side wall horizontally vented gas fueled equipment installed in every dwelling, building or structure used in whole or in part for residential purposes, including those owned or operated by the Commonwealth and where the side wall exhaust vent termination is less than seven (7) feet above finished grade in the area of the venting, including but not limited to decks and porches, the following requirements shall be satisfied:
Installation of Carbon Monoxide Detectors
At the time of installation of the side wall horizontal vented gas fueled equipment, the installing plumber or gas fitter shall observe that a hard wired carbon monoxide detector with an alarm is installed on each additional level of the dwelling, building or structure served by the side wall horizontally vented gas fueled equipment. It shall be the responsibility of the property owner to secure the services of qualified licensed professionals for the installation of hard wired carbon monoxide detectors.
In the event that the side wall horizontally vented gas fueled equipment is installed in a crawl space or an attic, the hard wired carbon monoxide detector with alarm and battery back-up may be installed on the next adjacent floor level.
In the event that the requirements of this subdivision can not be met at the time of completion of installation, the owner shall have a period of thirty (30) days to comply with the above requirements; provided, however, that during said thirty (30) day period, a battery operated carbon monoxide detector with an alarm shall be installed.
Approved Carbon Monoxide Detectors
Each carbon monoxide detector as required in accordance with the above provisions shall comply with NFPA 720 and ANSI/UL 2034 listed and IAS certified.
Signage
A metal or plastic identification plate shall be permanently mounted to the exterior of the building at a minimum height of eight (8) feet above grade directly in line with the exhaust vent terminal for the horizontally vented gas fueled heating appliance or equipment. The sign shall read, in print size no less than one-half (1/2) inch in size, “GAS VENT DIRECTLY BELOW, KEEP CLEAR OF ALL OBSTRUCTIONS”.

Inspection
The state or local gas inspector of the side wall horizontally vented gas fueled equipment shall not approve the installation unless, upon inspection, the inspector observes carbon monoxide detectors and signage installed in accordance with the provisions of 248 CMR 5.08(2)(a)1 through 4.
Exemptions
The following equipment is exempt from 248 CMR 5.08(2)(a)1 through 4:
· The equipment listed in Chapter 10 entitled
“Equipment Not Required To Be Vented” in the most current edition of NFPA 54 as adopted by the Board; and
· Product Approved side wall horizontally vented gas
fueled equipment installed in a room or structure separate from the dwelling, building or structure used in whole or in part for residential purposes.
MANUFACTURER REQUIREMENTS
Gas Equipment Venting System Provided
When the manufacturer of Product Approved side wall horizontally vented gas equipment provides a venting system design or venting system components with the equipment, the instructions provided by the manufacturer for installation of the equipment and the venting system shall include:
· Detailed instructions for the installation of the venting
system design or the venting system components; and
· A complete parts list for the venting system design or
venting system.
Gas Equipment Venting System NOT Provided
When the manufacturer of a Product Approved side wall horizontally vented gas fueled equipment does not provide the parts for venting the flue gases, but identifies “special venting systems”, the following requirements shall be satisfied by the manufacturer:
· The referenced “special venting system” instructions
shall be included with the appliance or equipment installation instructions; and
· The “special venting systems” shall be Product
Approved by the Board, and the instructions for that system shall include a parts list and detailed installation instructions.
A copy of all installation instructions for all Product Approved side wall horizontally vented gas fueled equipment, all venting instructions, all parts lists for venting instructions, and/or all venting design instructions shall remain with the appliance or equipment at the completion of the installation.

4

10007852

LDVT Series Direct Vent GaS Fireplace

Fireplace Dimensions

Rough Opening Depth
S
R
F

E I

S

U

T

Rough Opening Height

V – Rough Opening Width

Low

Voltage

Access

GB

Q

Gas Line

Access

C

Electrical

Access

D

Low

Voltage

Electrical

Access

M O P
Fig. 1 Fireplace specifications and framing dimensions.

N

A

J

Gas Line

K

Access

L

Ref.

33LDVT

36LDVT

39LDVT

43LDVT

A

33″ (838 mm)

36″ (914 mm)

39″ (991 mm)

43″ (1092 mm)

B

28/” (733 mm)

34¹/” (870 mm)

34¹/” (870 mm)

37″ (940 mm)

C

31¹/” (794 mm)

34¹/” (870 mm)

37¹/” (946 mm) 41¹/” (1048 mm)

D

18³/” (466 mm)

23″ (584 mm)

23″ (584 mm) 25³/” (654 mm)

E

22³/” (578 mm)

24″ (610 mm)

27″ (686 mm)

31″ (788 mm)

F

14″ (356 mm)

16″ (406 mm)

16″ (406 mm)

16″ (406 mm)

G

31³/” (806 mm)

37″ (939 mm)

37″ (939 mm) 39³/” (1010 mm)

H

—

—

—

—

—

—

—

—

I

6″ (152 mm)

6³/” (170 mm)

6³/” (170 mm) 6³/” (170 mm)

J

4/” (118 mm)

5/” (143 mm)

5/” (143 mm) 5/” (143 mm)

K

6³/” (162 mm)

8″ (203 mm)

8″ (202 mm)

8″ (203 mm)

L

8/” (225 mm)

11/” (302 mm)

11/” (302 mm) 11/” (302 mm)

M

2″

(51 mm)

2″ (51 mm)

2″ (51 mm)

2″ (51 mm)

N

3³/” (86 mm)

3¹/” (83 mm)

3¹/” (83 mm)

3¹/” (83 mm)

O

4/” (118 mm)

6³/” (172 mm)

6³/” (172 mm) 6³/” (172 mm)

P

6³/” (162 mm)

9¹/” (235 mm)

9¹/” (235 mm) 9¹/” (235 mm)

Framing Dimensions

Q

29/” (753 mm)

35″ (889 mm)

35″ (889 mm) 37³/” (959 mm)

R

14¹/” (368 mm)

16¹/” (419 mm)

16¹/” (419 mm) 16¹/” (419 mm)

S

35³/” (908 mm)

39³/” (1010 mm)

43¹/” (1095 mm) 44¹/” (1121 mm)

T

50¹/” (1238 mm) 55¹/” (1403 mm)

60/” (1546 mm) 62³/” (1584 mm)

U

25¹/” (641 mm)

28¹/” (714 mm)

30/” (784 mm) 31¹/” (794 mm)

V

33¹/” (851 mm)

36¹/” (927 mm)

39¹/” (1003 mm) 43¹/” (1105 mm)

10007852

5

LDVT Series Direct Vent Gas Fireplace Locating Your Fireplace

E Y
D Y
F

A C X

B X
B

Fig. 2 Locate gas fireplace.

LU584-T

A – Flat on wall D – *Room divider Y – 6″ minimum

B – Cross corner E – *Flat on wall corner

C F

–

CL1o2h**c/a1Iass8ti/len0ag2ninuddsnjtittallation

Note (Fig. 2):

** Island (C) and Room Divider (D) installation is possible as

long as the horizontal portion of the vent system (X) does not

exceed 20′ (6m). See details in manual Venting Section.

• When you install your fireplace in(D) Room divider or (E)

Flat on wall corner positions (Y), a minimum of 6″ (152mm)

clearance must be maintained from the perpendicular wall and

the front side edge of the fireplace. See (Y) in Fig. 2.

Clearance to Combustibles
Top of Unit to Ceiling ………………………….. 36″ (914 mm) Appliance
Top …………………………………………………. 0″ (0 mm) Bottom…………………………………………….. 0″ (0 mm) Side………………………………………………… 0″ (0 mm) Back ……………………………………………….. 0″ (0 mm) Venting Concentric sections of DV Vent Top, bottom & sides ………………………… 1″ (25 mm) Flex Vent ………………………………………….. 7/8″ (22 mm)
Mantels
The height that a combustible mantel is fitted above the fireplace is dependent on the depth of the mantel. This also applies to the distance between the mantel leg (if fitted) and the fireplace. For the correct mounting height and widths refer to Figures 3a and 3b. The fitting of a bay window trim kit does not effect the distances and reference points referred to in the diagram and chart. Noncombustible mantels and legs may be installed at any height and width around the appliance. When using paint or lacquer to finish the mantel, such paint or lacquer must be heat resistant to prevent discoloration.

6

V W X Y Z

A BC DE

3/4″ (19 mm) Scribe Moulding for use with MHSC Cabinets
Fireplace
Top Louvre Assembly

CFM146

Top of Combustion Chamber

Mantel Chart

Mantel Shelf CFM146

Mantel from Top

Ref. or Breast Plate RD7/Ve5/fM0.1antsetal Choarft Combustion Chamber

Depth

36/39/43 LDVT 33LDVT

V 10″ (254 mm) A 17″ (432 mm) 16¹/” (419 mm)

W 8″ (203 mm) B 15″ (381 mm) 14¹/” (368 mm)

X 6″ (152 mm) C 13″ (330 mm) 12¹/” (318 mm)

Y 4″ (101 mm) D 11″ (279 mm) 10¹/” (267 mm)

Z 2″ (51 mm) E 9″ (229 mm) 8¹/” (216 mm)

Fig. 3a Combustible mantel minimum installation.

3/4″ (19 mm) Scribe Moulding for use with MHSC Cabinets

Black Surround Face

Mantel Leg

Side of CFCMo1m64baustion Chamber
Mantel Leg Chart 06/22/01 sta

J IH G F
K L M N O

CFM170

Mantel

Mantel Leg FromSide

Ref.

Leg Depth Ref. of Comb. Opening

F 10″ (254 mm) K

11¹/” (292 mm)

G

8″ (203 mCDmFVMB)1u7il0der FLront

9¹/” (241 mm)

H 6″ (152 mVmiew) M

7¹/” (191 mm)

I 4″ (101 mm) N

5¹/” (140 mm)

J 2″ (51 mm)

O

3¹/” (89 mm)

Fig. 3b Combustible mantel leg minimum installation. 10007852

Hearth
A hearth is not mandatory but is recommended for aesthetic purposes. We recommend a noncombustible hearth which projects out 12″ (305mm) or more from the front of the fireplace.
Cold climate installation recommendation: When installing this unit against a noninsulated exterior wall or chase, it is mandatory that the outer walls be insulated to conform to applicable insulation codes.
Framing and Finishing
Check fireplace to make sure it is levelled and properly positioned.

To mount the appliance:
1. Choose the location.
2. This unit comes with four (4) flanges pre-mounted on both sides of the fireplace to allow two different drywall thicknesses to be used. Flange “A” is for 1/2″ drywall while flange “B” is for 5/8″ drywall.
3. Bend the desired flanges out 90° on both sides of the fireplace. Slide the fireplace into the framed opening until the flanges contact the front surfaces of the framing. Level the unit and secure it firmly in place.

Flange Location for Desired Drywall Depth

Flange Position
A B

Drywall Depth 1/2″ / 13 mm 5/8″ / 16 mm

A

B

Fig . 4 Nailing flanges.

FP1546

Final Finishing
Noncombustible materials suchFaPs15b4r6ick or tile may be extended over the edges of the LfDaVcTenoafilitnhgeflaanpgepsliance. DO NOT cover any vent or grille1/p05anels.
If a Trim Kit is going to be installed on the fireplace, the brick or tile will have to be installed flush with the edges of the appliance.

LDVT Series Direct Vent GaS Fireplace

Gas Specifications

Model

Gas Fuel Control

Max. Input BTU/h

33LDVTRN

Nat

Millivolt

16,000

33LDVTRP

Prop Millivolt

16,000

33LDVTEN

Nat 24V Hi/Lo 16,000

33LDVTEP

Prop* 24V Hi/Lo 16,000

33LDVTIN

Nat. 6V DC Hi/Lo 16,000

33LDVTIP Prop. 6V DC Hi/Lo 16,000

36LDVTRN

Nat

Millivolt

19,500

36LDVTRP

Prop Millivolt

19,500

36LDVTEN

Nat 24V Hi/Lo 19,500

36LDVTEP

Prop* 24V Hi/Lo 19,500

36LDVTIN

Nat. 6V DC Hi/Lo 19,500

36LDVTIP Prop. 6V DC Hi/Lo 19,500

39LDVTRN

Nat

Millivolt

23,000

39LDVTRP

Prop* Millivolt

22,500

39LDVTEN

Nat 24V Hi/Lo 23,000

39LDVTEP

Prop* 24V Hi/Lo 22,500

39LDVTIN

Nat. 6V DC Hi/Lo 23,000

39LDVTIP Prop. 6V DC Hi/Lo 23,000

43LDVTRN

Nat

Millivolt

26,000

43LDVTRP

Prop* Millivolt

24,000

43LDVTEN

Nat 24V Hi/Lo 26,000

43LDVTEP

Prop* 24V Hi/Lo 24,000

*Using conversion kit

Min. Input BTU/h 11,200 12,000 11,200 12,000 11,200 12,000 13,650 14,625 13,650 14,625 13,650 14,625 16,100 16,875 16,100 16,875 16,100 16,875 18,200 18,000 18,200 18,000

Air Shutter Adjustment

Model 33LDV 36/39/43LDV
33/36/39/43LDV

Gas Type Natural Natural
Propane

Air Shutter Opening 3/16″ Open
Top & Bottom Hole Half Closed
Fully Open

Gas Inlet and Manifold Pressures

Natural LP (Propane)

Inlet Minimum

5.5″ w.c.

11.0″ w.c.

Inlet Maximum

14.0″ w.c.

14.0″ w.c.

Manifold Pressure

3.5″ w.c.

10.0″ w.c.

10007852

7

LDVT Series Direct Vent Gas Fireplace
High Elevations
Input ratings are shown in BTU per hour and are certified without deration for elevations up to 4,500 feet (1,370m) above sea level. For elevations above 4,500 feet (1,370m) in USA, installations must be in accordance with the current ANSI Z223.1/NFPA 54 and/or local codes having jurisdiction. In Canada, please consult provincial and/or local authorities having jurisdiction for installations at elevations above 4,500 feet (1,370m).
Gas Line Installation
When purging gas line, the front window frame removed.
The gas pipeline can be brought in through the rear of the fireplace as well as the bottom. Knockouts are provided on the bottom behind the valve to allow for the gas pipe installation and testing of any gas connection. It is most convenient to bring the gas line in from the rear right side of the valve as this allows fan installation or removal without disconnecting the gas line.
The gas line connection can be made with properly tinned 3/8″ copper tubing, 3/8″ rigid pipe or an approved flex connector. Since some municipalities have additional local codes, it is always best to con- sult your local authority and the National Fuel Gas Code, ANSI Z223.1/NFPA 54 in the USA or the CSA-B149.1 installation codes.
1/2″ Gas Supply 1/2″ NPT X 1/2″ Flare Shut-off Valve
3/8″ Flex line (from valve)

The fireplace valve must not be subjected to any test pressures exceeding 1/2 psi. Isolate or disconnect this or any other gas appliance control from the gas line when pressure testing.
Remote ON/OFF Switch
Installation:
1. Thread the wiring through holes on the end panels of appliance. Take care not to cut wire or insulation on metal edges. Route the wire to a conveniently located receptacle box.
2. Attach the wire to the ON/OFF switch and install the switch into the receptacle box.
3. Connect the other ends of the wire to the gas control valve. (Fig. 6)
Remote ON/OFF Switch or Thermostat or Remote Control

TP

TH

Gas

Control

TP

Valve

TH

Fig. 6 Remote switch wiring diagram.

FP1224

AlternateFPS1w2i2tc4h Location Ttphrheoevairdceecmedosatsenddsowsocirt.rceShwicmathpnR1ely1bebm/emr0aoi2ncousktnteeattltsltheowedeistoictwnhhiettchrhesitfdoroetnhote/fstbihdreeacokfet
frame, lining up the screws with the pre-punched holes. (Fig. 7)

FP297A
Fig. 5 Typical gas supply installation.
Always check for gas leaks with a mild soap and waterFPs2o9l7uAtion. Do not use an open flame forIlNeSaTkAtVeEsNtiTnFgR. EE
UVHB26 GAS SUPPLY
The gas control is equipp7e/1d/9w8ith a captured screw type pressure test point, therefore it is not necessary to provide a 1/8″ test point up stream of the control.
When using copper or flex connector use only approved fittings. Always provide a union when using black iron pipe so that the gas line can be easily disconnected for burner or fan servicing . See gas specifications for pressure details and ratings.
8

Fig. 7 Alternate switch location.

FP1024

Do not wire the remote ON/OFF wall switch for the gas fireplace to the 120 volt power supply.

10007852

EB-1 Electrical Box
The fireplace, when installed, must be electrically connected and grounded in accordance with local codes or, in the absence of local codes, with the current CSA C22.1 Canadian Electrical Code.
For USA installations follow local codes and the national electrical code ANSI/ NFPA No. 70.
It is strongly suggested that the wiring of the EB-1 Electrical Junction Box be carried out by a licensed electrician.
Ensure that the power to the supply line has been disconnected before commencing this procedure.
The EB-1 Electrical junction box has been fitted standard on this model to allow for the easy connection of an optional fan kit.
To connect the EB-1 box to the house electrical supply follow the steps below.
1. Unscrew retaining screw from EB-1 base plate (Fig. 8) and remove the EB-1 assembly from the appliance.
2. Remove the front cover of the EB box.
3. Remove the plug socket assembly from the EB-1 box.
4. Feed the supply line in through the EB-1 opening in the side of the appliance and then through the back of the EB-1 assembly. (Fig. 8)
5. Connect the black wire of the power supply line to the brass screw (polarized) of the socket assembly.
6. Connect the white wire of the power line to the chrome screw of the socket assembly.
7. Connect the ground wire of the supply line to the green screw of the socket assembly.
8. Refit the socket assembly back into the electrical box and replace the cover plate. Secure the cable with the clamp on the outside of the EB-1 base plate and refit the EB-1 assembly to the unit with the screw removed in step

LDVT Series Direct Vent GaS Fireplace

INSIDE

Electrical Box Retaining Screw

OUTSIDE

Fig. 8 EB-1 receptacle.

BACK OF UNIT

FP580

Electronic Gas CFINPoS5T8nA0VtErNoT FlRVEEalve
EB1 JUNCTION BOX
This appliance may be fitted11w/18i/t9h7 a Synetek ignition module.
Installation of the remote on/off switch or wall thermostat on electronic ignition units.
1. Thread the wiring through the holes on the side panels of the appliance. Take care not to cut the wire or insulation on metal edges. Route the wire to a conveniently located receptacle box.
2. Attach the wire to the ON/OFF switch and install the switch into the receptacle box.
3. Connect the white wire from the wall switch or wall thermostat to the white wire terminal from the electronic module. Connect the black wire from the wall switch or the red wire from the wall thermostat, to the red wire terminal from the electronic module.

10007852

9

LDVT Series Direct Vent Gas Fireplace

BLACK WHITE
PURPLE

L1 L2 GREEN

POWER CORD

PILOT SENSING PILOT IGNITER
YELLOW

MP

O

O

CIRCUIT BOARD

BLUE
RED WHITE

VALVE
ORANGE
ON/OFF SWITCH OR
WALL THERMOSTAT

Fig. 9 SIT822 Valve with Synetek electronic control wiring diagram.

FP1571

White or Green

Green or White

White or Orange Orange or White

FP1571

SIT822

Pilot

Main

AF-4000

Synetek wiring 4/05 Main
Module

SI

To Pilot Ignitor To Pilot Flame Sensor
Optional Remote Battery Back-Up Pack
Remote/Off Switch Continuous Pilot ON/OFF Switch

AC Adaptor
Fig. 10 American Flame Valve AF-4010-IN wiring diagram.
FP1866 wiring diagram 5/08
10

Brown Brown
Red Black

Black Gnd (SWI) (Connect to (SWI) ON/OFF Switch)

Extension Harness

Red Black

FP1866
10007852

LDVT Series Direct Vent GaS Fireplace

General Venting

Your fireplace is approved to be vented either through the side wall, or vertically through the roof.
· Only MHSC venting components specifically
approved and labelled for this fireplace may be used.
· Vent terminations shall not be recessed into a wall
or siding.
· Horizontal venting which incorporates the twist lock pipe must be installed on a level plane without an inclining or declining slope.
· Horizontal venting which incorporates the use of flex
venting shall have an inclining slope from the unit of 1″ (25 mm) per 24″ (610 mm).

There must not be any obstruction such as bushes, garden sheds, fences, decks or utility buildings within 24″ (610 mm) from the front of the termination hood.
Do not locate termination hood where excessive snow or ice build up may occur. Be sure to check vent termination area after snow falls, and clear to prevent accidental blockage of venting system. When using snow blowers, make sure snow is not directed towards vent termination area.
Location of Vent Termination
It is imperative the vent termination be located observing the minimum clearances as shown on the next page.
*Check with local codes or in absence of same with CSA-B149.1 Installation Codes (1991) for Canada or follow the current National Fuel Gas Code, ANSI Z223.1/NFPA 54 for installations in the USA.

10007852

11

LDVT Series Direct Vent Gas Fireplace General Venting Information – Termination Location

INSIDE CORNER DETAIL

G

V

A

H

N

N

D

E V L
B
CFM145a

C

V

F

V

Operable

B

B V Operable

B

V

A

BV Fixed Closed
B JX

M I

VKX

V VENT TERMINATION X AIR SUPPLY INLET

AREA WHERE TERMINAL IS NOT PERMITTED

Canadian Installations1

US Installations2

A = Clearance above grade, veranda, porch, deck, or balcony
B = Clearance to window or door that may be

1CD2FV”MT(1e34r0m5cainmLo)cation
5/01/01 Rev. 12/05/01
6s”ta(15cm) for appliances

12″ (30cm) 6″ (15cm) for appliances

opened

< 10,000Btuh (3kW), 12″ (30cm)

< 10,000 Btuh (3kW), 9″

for appliances > 10,000 Btuh (3kW) and (23cm) for appliances > 10,000

< 100,000 Btuh (30kW), 36″ (91cm)

Btuh (3kW) and < 50,000 Btuh

for appliances > 100,000 Btuh (30kW)

(15kW), 12″ (30cm) for

appliances > 50,000 Btuh (15kW)

C = Clearance to permanently closed window 12″ (305mm) recommended to

12″ (305mm) recommended to

prevent window condensation

prevent window condensation

D = Vertical clearance to ventilated soffit located

above the terminal within a horizontal

18″ (458mm)

18″ (458mm)

distance of 2′ (610mm) from the center

line of the terminal

E = Clearance to unventilated soffit

12″ (305mm)

12″ (305mm)

F = Clearance to outside corner

see next page

see next page

G = Clearance to inside corner (see next page) see next page

see next page

H = Clearance to each inside of center line

3′ (91cm) within a height of 15′ (5m)

3′ (91cm) within a height of 15′

extended above meter/regulator assembly above the meter/regulator assembly

(5m) above the meter/regulator

assy

I = Clearance to service regulator vent outlet 3′ (91cm)

3′ (91cm)

J = Clearance to nonmechanical air supply inlet 6″ (15cm) for appliances < 10,000

6″ (15cm) for appliances

to building or the combustion air inlet to any Btuh (3kW), 12″ (30cm) for

< 10,000 Btuh (3kW), 9″

other appliances

appliances > 10,000 Btuh (3kW) and

(23cm) for appliances > 10,000

< 100,000 Btuh (30kW), 36″ (91cm)

Btuh (3kW) and < 50,000 Btuh

for appliances > 100,000 Btuh (30kW)

(15kW), 12″ (30cm) for

appliances > 50,000 Btuh (15kW)

K = Clearance to a mechanical air supply inlet 6′ (1.83m)

3′ (91cm) above if within 10

feet (3m) horizontally

L = Clearance above paved sidewalk or paved 7′ (2.13m)

7′ (2.13m)

driveway located on public property

M = Clearance under veranda, porch, deck or 12″ (30cm)

12″ (30cm)

balcony

N = Clearance above a roof shall extend a minimum of 24″ (610mm) above the highest point when it passes through the roof

surface, and any other obstruction within a horizontal distance of 18″ (450mm).

1 In accordance with the current CSA-B149 Installation Codes 2 In accordance with the current ANSI Z223.1/NFPA 54 National Fuel Gas Codes A vent shall not terminate directly above a sidewalk or paved driveway which is located between two single family dwellings and serves both dwellings only permitted if veranda, porch, deck or balcony is fully open on a minimum 2 sides beneath the floor: NOTE: 1. Local codes or regulations may require different clearances.
2. The special venting system used on Direct Vent Fireplaces are certified as part of the appliance, with clearances tested and approved by the listing agency. 3. MHSC assumes no responsibility for the improper performance of the appliance when the venting system does not meet these requirements.

Fig. 11 Vent termination locations. 12

10007852

LDVT Series Direct Vent GaS Fireplace

Termination Clearances

Termination clearances for buildings with combustible and noncombustible exteriors.

Inside Corner

Outside Corner

Alcove Applications*

G V

G = Combustible
6″ (152 mm) Noncombustible
2″ (51 mm)

V F

F = Combustible
6″ (152 mm) Noncombustible
2″ (51 mm)

D

C

C

V E
O

Balcony with no side wall

Balcony with perpendicular side wall

E = Min. 6″ (152 mm) for non-vinyl sidewalls Min. 12″ (305 mm) for vinyl sidewalls
O = 8′ (2.4 m) Min.

M V
M = Combustible & Noncombustible
12″ (305 mm)

M
V
P Combustible & Noncombustible M = 24″ (610 mm) P = 20″ (508 mm)

No. of Caps
1 2 3 4

DMin. 3′ (914 mm) 6′ (1.8 m) 9′ (2.7 m) 12′ (3.7 m)

CMax. 2 x DActual 1 x DActual 2/3 x DActual 1/2 x DActual

DMin. = # of Termination caps x 3 CMax. = (2 / # termination caps) x DActual

584-15

*NOTE: Termination in an alcove space (spaces open only on one side and with an overhang) is permitted with the dimensions specified for vinyl or non-vinyl siding and soffits. 1. There must be a 3′ (914 mm) minimum between termination caps. 2. All mechanical air intakes within 10′ (1 m) of a termination cap must be a minimum of 3′ (914 mm) below the termination cap. 3. All gravity air intakes within 3′ (914 mm) of a termination cap must be a minimum of 1′ (305 mm) below the termination cap.

Fig. 12 Termination clearances.

General Information on Assembling Vent Pipes

Canadian Installations:
The venting system must be installed in accordance with the current CSA-B149 .1 installation code.
USA Installations:
The venting system must conform with local codes and/ or the current National Fuel Gas code ANSI Z223.1/ NFPA 54.
Only venting components manufactured by MHSC can be used in Direct Vent systems.
Flex Vent Pipes
Before joining the flex vent pipe to the unit, apply a bead of high temperature sealant (provided) to the 4″ pipe exiting the fireplace. Secure flex vent pipe in place with a hose clamp (provided).
Be sure the flex pipe overlaps at least 1″ (25 mm) onto the collars of the fireplace and termination. If the termination has an internal bead, be sure to overlap and secure 1″ (25 mm) past the bead.

• Be sure the vent is actually crushed before proceeding. Apply a tug to be sure the vent will not slip off the collars.
  Repeat process with 7″ flex vent pipe. The same procedure must be performed on the vent side.

Hose Clamp

Apply High Temperature Sealant

FP1471
Fig. 13 Apply high temperature sealant to 4″ and 7″ pipes.

10007852

13

LDVT Series Direct Vent Gas Fireplace

Twist Lock Pipes
When using MHSC twist-lock pipe it is not necessary to use sealant on the joints. The only areas of the venting system that need to be sealed with high temperature silicone sealant are the sliding joints of any telescopic vent section used in the system.
To join the twist lock pipes together, simply align the beads of the male end with the grooves of the female end, then while bringing the ends together, twist the pipe until the flange on the female end contacts the external flange on the male end. It is recommended that you secure the joints with three (3) sheet metal screws, however this is not mandatory with twist lock pipe.
To make it easier to assemble the joints we suggest putting a lubricant (Vaseline or similar) on the male end of the twist lock pipe prior to assembly.

Male End

Female End

Screw Holes Fig. 14 Twist-lock pipe joints.
How to Use the Vent Graph

TWL100

The vent following

vcehnatrtinsshtoaullladTTtwWiboisLent1L0rion0ecsaktdrPuiipcneticoonnsjutoncdteiotnerwmiitnheththee

relationship of the ve3r/t1ic2a/9l9anddjt horizontal dimensions of

the vent system.

1. Determine the height of the center of the horizontal vent pipe exiting through the outer wall. Using this dimension on the Sidewall Vent Graph. (Fig. 15) locate the point intersecting with the slanted graph line.

2. From the point of this intersection, draw a vertical line to the bottom of the graph.

3. Select the indicated dimension, and position the fireplace in accordance with same.

Example A: If the vertical dimension from the floor of the fireplace is 11′ (3.4 m) the horizontal run to the face of the outer wall must not exceed 14′ (4.3 m).

Example B: If the vertical dimension from the floor of the unit is 7′ (2.14 m), the horizontal run to the face of the outer wall must not exceed 8¹/’ (2.6 m).

Vertical dimension from the floor of the fireplace to the center of the horizontal vent pipe

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

eg: A

11

10

9

8

7

eg: B

6

5

4

3

3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Horizontal dimension from the outside face of the wall to the center of the fireplace vent flange
SidaenwdahllovreiznotngtraalpdhimsehnoCD9sw/FV2ioinM8nGg/s10rtf0ha0oe2pr hraseictDlaaitrieocntsVhiepnbt efltuweeseynstveemrt.ical Fig. 15 Sidewall venting graph. (Dimensions in feet)
Vertical Sidewall Applications

Since it is very important that the venting system maintain its balance between the combustion air intake and the flue gas exhaust, certain limitations as to vent configurations apply and must be strictly adhered to.
The vent graph showing the relationship between vertical and horizontal side wall venting will help to determine the various dimensions allowable.
Minimum clearance between vent pipes and combustible materials is one 1″ (25mm) on top, bottom and sides unless otherwise noted.
When the vent termination exits through foundations less than 20″ (508mm) below siding outcrop, the vent pipe must flush up with the siding.
It is always best to locate the fireplace in such a way that minimizes the number of offsets and horizontal vent length of vent pipe from the flue collar of the fireplace to the face of the outer wall.

14

10007852

20′ (6m)

7.5′ (2.3m)

Pipe Straps Every 3′ (914mm) Pipe Straps Every 3′ (914mm)

Firestop/Zero Clearance Sleeve

FP1012

Fig. 16 Support straps for horizontal runs.

Horizontal plane meaFnPs1n0o12vertical rise exists on this

portion of the vent assTeopmvbelyn.t max run

·

1/25/00 djt
The maximum number of 90° elbows per side wall

installations is three (3).

· If a 90° elbow is fitted directly onto the fireplace
flange the maximum horizontal vent run before the
termination or a vertical rise is 36″ (914 mm).

· If a 90° elbow is used in the horizontal vent run
(level height maintained) the maximum horizontal vent length is reduced by 36″ (914 mm). This does not apply if the 90° elbows are used to increase or redirect a vertical rise. Example: According to the chart the maximum horizontal vent length in a system with a 7.5′ (2.3 m) vertical rise is 20′ (6 m) and if a 90° is required in the horizontal vent it must be reduced to 17′ (5.2 m). In Figure 18, Dimension A plus B must not be greater than 17′ (5.2 m).

3′ (914mm)

LDVT Series Direct Vent GaS Fireplace

7.5′ (2.3m)

A B
1 x 90° elbow in horizontal plane = 3′ (914mm)
A + B = 17′ (5.2m) Max.

FP1238
Fig. 18 Maximum vent run with elbows.
· The maximum number of 45° elbows permitted per
installation is six (6). These elbows can be installed in either the vertical or horizontal run.
· For each 45° elbow installed in the horizontal run,
the length of the horizontal run MUST be reduced by 18″ (457 mm). This does not apply if the 45° elbows are installed on the vertical part of the vent system.
· The maximum number of elbow degrees in a system
is 270°. (Fig. 19)

Example:

Elbow 1 = 90°

Elbow 2 = 45°

Elbow 3 = 45°

4

Elbow 4 = 90°

Total angular variation = 270°

1 + 2 + 3 + 4 = 270°
3 2 1

Fig. 17 Maximum horizontal vent run.
FP1237 horizontal plane 12/02

FP1237

Fig. 19 Maximum number of elbow degrees.

FP1239

10007852

15

LDVT Series Direct Vent Gas Fireplace

Vertical Sidewall Installation Twist Lock Pipe
STEP 1
Locate vent opening on the wall. It may be necessary to first position the fireplace and measure to obtain hole location. Depending on whether the wall is combustible or noncombustible, cut opening to size. (Fig. 20) For combustible walls first frame in opening. NOTE: When using flex vent, the opening will have to be measured according to the 1/2″ (13 mm) rise in 12″ (305 mm) vent run. Combustible Walls: (Fig. 20) Cut a 9³/”H x 9³/”W (240 x 240 mm) hole through the exterior wall and frame as shown. Noncombustible Walls: (Fig. 20) Hole opening must be 7¹/” (190 mm) in diameter.
Vent Opening for Combustible Wall 9³/”
(240mm)

9³/” (240mm)

Framing Detail

Adjustable Zero Clearance Sleeve

8 Screws (2)

Max. Length 12″ (305mm) #8 Screws (2)

Firestop

8 Screws (2)

Adjustable Zero Clearance Sleeve
Fig. 21 AdjustableZzCeSro10c1learance sleeve.
Zero Clearance Sleeve 3/11/99 djt

ZCS101

X

Fireplace Hearth Opening for Noncombustible Wall

7¹/” (190mm)

VO584-100

Fig. 20 Locate vent opening on wall.

STEP 2

Measure wall thickness and cut zero clearance sleeve

parts to proper length (MAXIMUM 12″/305 mm). As-

semble sleeve and attach to firestop with #8 sheet

metal screws (supplied). Install firestop assembly. (Fig.

VO584-100

Zero clearanVceenstleOevpeeinsinognly required for

combustible2w/9a9lls. djt

STEP 3
Place fireplace into position. (Fig. 22) Measure the vertical height (X) required from the base of the flue collars to the center of the wall opening.

FP1240
Fig. 22 Vertical height requirement. STEP 4 Attach the appropriate venting component(s) to the inner and outer flue collars of the fireplace using three (3) screws. (Fig. 23) Follow with the installation of the inner and outer elbow. Again secure joints with three (3) sheet metal screws.
X

Fig. 23 Horizontal length requirement.

FP1241

16

10007852

STEP 5 Measure the horizontal length requirement including a 2″ (51 mm) overlap, ie from the elbow to the outside wall face plus 2″ (51 mm) (or the distance required if installing a second 90° elbow). (Fig. 23)
Always install horizontal venting on a level plane. STEP 6 Use appropriate length of pipe sections – telescopic or fixed – and install the horizontal vent sections. The sections which go through the wall are packaged with the starter kit, and can be cut to suit if necessary. (Fig. 24) Sealing vent pipe and firestop gaps with high temperature sealant will restrict cold air being drawn in around fireplace.
FP1242
Fig. 24 Through the wall. STEP 7 Guide the vent terminations 4″ and 7″ collars into their respective vent pipes. Double check that the vent pipes overlap the collars by 2″ (51 mm). Secure the termination to the wall with screws provided and caulk around the wall plate to weatherproof. (Fig. 25) As an alternative to screwing the termination directly to the wall you may also use expanding plugs or an approved exterior construction adhesive. You may also attach the termination with screws through the inner body into the 4″ (102 mm) vent pipe however for this method you must extend the 4″ (102 mm) pipe approximately 6″ (152 mm) beyond the outer face of the wall.
10007852

LDVT Series Direct Vent GaS Fireplace

FP1243
Fig. 25 Apply high temperature sealant to collars or terminations.
Support horizontal pipes every 3′ (914 mm) with metal pipe straps. Make sure the horizontal vent pipe is installed on a level horizontal plane.
Vertical Sidewall Installation Flex Vent Pipe
NOTE: The 40″ (1016 mm) flex vent is used for 90° off the top of the unit then out the back wall.
Follow Step 1 and 2 on Page 16.
Step 3
Install the four (4) spacer springs on the 4″ flex vent pipe. When installing the spacer springs around the 4″ pipe, stretch the spring to approximately 15″ (381 mm), wrap the spring around the pipe and interlock the ends of the spacer spring approximately 2″ (51 mm). Measure 6³/” (172 mm) from the end of the pipe. Place the next spring 5″ (127 mm) from the previously installed spring. Place the next spring 6″ (152 mm) from the last spring. Finally place the last spring 12″ (305 mm) from the last spring installed. (Fig. 26)

4″ Flex Vent Pipe Spacer Spring
Fig. 26 Install spacer springs.

12″ (305mm)
6″ (152mm)
5″ (127mm)
6″ (172mm)

FP1474
17

LDVT Series Direct Vent Gas Fireplace
Step 4
Install the 4″ (102 mm) flex vent pipe to the appliance collar as described on Page 13. Secure the end with the first spring 6³/” (172 mm) from the flex pipe end to the unit.
Step 5
Slide the 7″ (178 mm) flex vent pipe over the 4″ flex vent pipe and secure the 7″ collar as described on Page 13.
Step 6
Bend the flex pipe horizontal so the bottom of the horizontal pipe measure 6¹/” (165mm) from the top of the unit immediately after the 90° formation. (Fig. 27) Be sure to follow the 1″ (25mm) rise in a 24″ (610 mm) horizontal run rule.
Step 7
Install the 4″ flex then 7″ flex to the termination.
6″ (165mm)
FP1475
Fig. 27 Bend flex vent at 90° so horizontal portion is 6¹/” (165 mm) off top of unit.
Below Grade Installations
When it is not possible to meet the required vent terminal clearances of 12″ (305 mm) above grade level a snorkel vent kit is recommended. It allows installation depth of down to 7″ (178 mm) below grade level. The 7″ is measured from the center of the horizontal vent pipe as it penetrates through the wall.
If venting system is installed below ground, we recommend a window well with adequate and proper drainage.
Ensure sidewall ventiFngPc1le4a7ra5nces are observed.
If installing a snorkel a minimum 24″ (610 mm) vertical
flex 90 bend rise is necessary. The maximum horizontal run with 4/04 djt the 24″ (610 mm) vertical pipe is 36″ (914 mm). This
measurement is taken from the collar of the fireplace (or transition elbow) to the face of the exterior wall. Refer to the Sidewall Vent Graph for extended horizontal run if the vertical rise exceeds 24″ (610 mm).

1. Establish vent hole through the wall. (Fig. 20)
2. Remove soil to a depth of approximately 16″ (406 mm) below base of snorkel. Install drain pipe. Install window well (not supplied). Refill hole with 12″ (305 mm) of coarse gravel leaving a clearance of approximately 4″ (102 mm) below snorkel. (Fig. 28)
3. Install vent system.
4. Ensure a watertight seal is made around the vent pipe coming through the wall.
5. Apply high temperature sealant caulking (supplied) around the 4″ and 7 ” snorkel collars.
6. Slide the snorkel into the vent pipes and secure to the wall.
7. Level the soil to maintain a 4″ (102 mm) clearance below snorkel. (Fig. 28)
Do not back fill around snorkel. A clearance of at least 4″ (102 mm) must be maintained between snorkel and the soil.

Zero Clearance Sleeve (if required) Firestop 7″ Pipe
24″ (610mm) Minimum*

Screws

7TDVSNORK (Snorkel) 4″ (102mm) Clearance Min.
Window Well

Gravel Drain

BG402
Fig. 28

Foundation Wall A minimum of 24″ (610mm) vertical pipe must be installed when using the 7TDVSNORK Kit. The 22″ (559mm) vertical rise (center to center) of the snorkel may be included for calculationof max. horizontal run.
Below grade installation.

If the foundBatGio4n02isarecessed, use recess brackets (not supplied) foTrospeVceunritng lower portion of the snorkel. Fasten bracBkeelotswtogrwadaell ifinrsstta,ltlahteionnsecure to snorkel with self dri1lli/n2g6/#008 xd1jt/2 sheet metal screws. It will be
necessary to extend vent pipes out as far as protruding
wall face. (Fig. 29)

18

10007852

Snorkel

Foundation Recess Recess Brackets
Watertight Seal Around Pipe

Wall Screws Sheet Metal Screws

Fig. 29 Snorkel installation, recessed foundation.

BG401

Vertical ThroBuGg4h0-t1he-Roof Applications This Gas FireplacSe nhaosrkbeeeln approved for: · Vertical installa2ti/o1n0s /u9p9to 4d0j’t(12 m) in height. Up
to a 10′ (3 m) horizontal vent run can be installed
within the vent system using a maximum of two 90°
elbows. (Fig. 30)

LDVT Series Direct Vent GaS Fireplace
Example: Maximum horizontal length 0 x 45° elbows = 10′ (3 m) 1 x 45° elbows = 8¹/’ (2.6 m) 2 x 45° elbows = 7′ (2.1 m)
· A minimum of an 8′ (2.4 m) vertical rise. · Two sets of 45° elbows offsets within these vertical
installations. From 0 to a maximum of 8′ (2.4 m) of vent pipe can be used between elbows. (Fig. 31)
· 7DVCS must be used to support offsets. (Fig. 33)
This application will require that you first determine the roof pitch and use the appropriate starter kit. (Refer to Venting Components List)
· The minimum height of the vent above the highest
point of penetration through the roof is 2′ (610 mm). (Fig. 35)
Max. 8′ (2.4m)
4

Max. Height 40′ (12m)
Min. Height 7′ (2.3m)

Max. 10′ (3m)

Pipe Straps Every 3′ (914mm)

1 + 2 + 3 + 4 = 270° 3

1

2

FP1244

Fig. 30 Support straps for horizontal runs.

· Up to two 45° elbows may be used within the
horizontal run. For each 45° elbow used on the horizontal level the maximum horizontal length must be reduced by 18″ (457 mm).

10007852

FP1244 through the roof max/min dims 12/02

Fig. 31 Typical offset application.
FP1245 through the roof 90 & 45 degree 12/02

FP1245
19

LDVT Series Direct Vent Gas Fireplace
Vertical Through-the-Roof Installation
1. Locate your fireplace. 2. Plumb to center of the (4″ (102 mm) flue collar from
ceiling above and mark position. 3. Cut opening equal to 9³/” x 9³/” (240 x 240 mm). 4. Proceed to plumb for additional openings through
the roof. In all cases, the opening must provide a minimum of 1″ (25 mm) clearance to the vent pipe, i.e., the hole must be at least 9³/” x 9³/” (240 x 240 mm). 5. Place fireplace into position. 6. Place firestop(s) #7DVFS or Attic Insulation Shield #7DVAIS into position and secure. (Fig. 32)
Attic Insulation Shield
Joist

Typical Roof Support Application

Typical Ceiling Support Application

CFM110

Fig. 33 Roof and ceiling supports.

CFM110

Typical ceiling#8/rSohoeeftsMueptapl Socrretws

10/90

(3 per joint)

Sealant

Storm Collar

Ceiling Installation

11″ (279mm)

11″ (279mm)

Upper Floor Joist

Fig. 34 Roof flashing.

TWL101a Twist Lock Pipe 2/8/99 djt

TWL101a

Firestop Spacer

Nails (4)

CFM100a

Fig. 32 Place firestop spacer(s) and secure. CFM100a
7. Install roof support (FFiigre.s3to3p)-Vaenrtdicarol of flashing making sure upper flange of flashing is below the shingles. (Fig. 34)
8. Install appropriate pipe sections until the venting is above the flashing. (Fig. 34)
9. Install storm collar and seal around the pipe.
10. Add additional vent lengths for proper height. (Fig. 35)

20

Min. 2′ (610 mm)

Fig. 35 Minimum termination to roof clearance.

CFM190

If there is a room above ceiling level,

firestop spacer must be installed on both

the bottom and the top side of the ceiling

joists. If an atticCiFsMa1b9o0ve ceiling level a

7DVAIS (Attic InTsTuRlaTtieornimSh. i2e’ld) must be

installed.

1/25/02 sta

The enlarged ends of the vent section always face downward. (Fig. 34)

10007852

Vertical Restrictor Plate 36LDVT, 39LDVT, 43LDVT
When installing the 36LDVT, 39LDVT or 43LDVT with a vertical through-the-roof configuration flue system, the restrictor plate (#10008048) supplied with the appliance MUST BE FITTED TO THE APPLIANCE at the installation.
NOTE: Do not use the restrictor plate supplied with the vertical termination cap.
1. Remove the rear log support. Save the two (2) screws.
2. Remove the two (2) nuts and save them.
3. Place the restrictor plate (Fig. 36) and secure it with the two (2) nuts.
4. Replace the rear log support to the same location as before and secure it with the screws removed in Step 1.

LDVT Series Direct Vent GaS Fireplace
Rear Log Support

Restrictor Plate Fig. 36 Assembling the restrictor plate.

FP1555

10007852

21

LDVT Series Direct Vent Gas Fireplace
Venting Components
7TDVRVT – Through the wall Rear Vent Termination

584A venting components rear vent term 4/6/99 djt
584B Vent components Starter Kit 2/25/99 djt

Starter Kit Model 7TDVSK – Sidewall Venting (Twist Lock Pipe) Model 7FDVSK – Sidewall Venting (Flex Vent Pipe) Models 7TDVTK/TV – Hot Touch Termination Kits Model 7TDVTVTK/TV – Cool Touch Termination Kit
Starter Kit – Model 7TDVSKV – Vertical Venting for 7TDVSKV-A order 1/12 to 6/12 roof pitch for 7TDVSKV-B order 7/12 to 12/12 roof pitch for 7TDVSKV-F order flat roof
Starter Kit for Below Grade Installation Model 7TDVSKS -Snorkel Kit (Twist Lock Pipe) Model 7FDVSKS -Snorkel Kit (Flex Vent Pipe)
Starter Pipe Model 7TDVP 20/8 – 24″ Starter Pipe Bulk Model 7FDVP 30/8 – 30″ Flex Pipe Bulk
45o Elbow 7TDV45 for Rear Vent to Vertical Vent or Vertical/Horizontal Offsets

584C 5V980V42e45/ned2Dtned5Ctge/9corgo9emrmeepepdeoojlentbnleobenwontwsts 5VP8ei5VT21p4ne8/0ee212Ftl4/nei52/0n1sEts2/0ieg/9n0c/25c99go/Ct/029pi9Coo/0edtnm99ow/jsvm9t9pieso9pntdtnowtljotentwicnesktinststlstolocckk
2/25/99 djt 10/20/99 twist lock

90o Transition Elbow 7TDVRT90 for Rear Vent to Vertical Vent
90° Elbow 7TDV90 Vertical/Horizontal Offset
Telescopic vent sections 7TDVP1117 -11″ to 17″ adjustable length 7TDVP3567 -35″ to 67″ adjustable length

Pipe sections for vertical or horizontal venting

Model 7TDVP8″ –

4 per box

Model 7TDVP12″ –

4 per box

Model 7TDVP24″ –

4 per box

Model 7TDVP36″

Model 7TDVP48″

Firestop Spacer Model 7DVFS

Attic Insulation Shield

Model 7DVAIS
584G

Venting Components

Firestop spacer

2/25/99 djt

Vertical/Horizontal Combination Offset Support

584H Venting components

Model 7DVCS

attic insulation shield

22

2/25/99 djt 584I

vent components

10007852

LDVT Series Direct Vent GaS Fireplace

Operating Instructions

Glass Information
Only glass approved by MHSC should be used on this fireplace.

6. Tilt the glass frame out slightly at the bottom, lift the frame up and away from the fireplace.
7. To replace the glass frame reverse the procedure.

· The use of any non-approved replacement glass will
void all product warranties.
· Care must be taken to avoid breakage of the glass. · Do not operate appliance with glass front
removed, cracked or broken.
· Replacement glass (complete with frame
window) is available through your MHSC dealer and should only be installed by a licensed qualified service person.

Louvre Removal

The top louvre panel is removed by lifting the panel vertically and pulling it away from the appliance. (Fig. 37) The lower access door is hinged along the bottom edge and is folded down to allow access

2. 1.

Louvre

Glass Panel FP1227 Fig. 37 Remove top louvre assembly.

Window Frame AssemFPb1ly22R7emoval 1. Turn the fireplace OFF (includLinogutvhreeprileotm) oval 2. If the unit has been operating 1a1llo/0w2time for the
components to cool.
3. Remove the top louvre assembly.
4. Open the lower louvre panel.
5. Release the two clamps securing the lower edge of the frame by pulling down on the handles. (Fig. 38)

10007852

Lower Clamps

Window Frame Assembly

Window Frame Assembly

Pull

Push Clamp

Clamp Hook

Handle

FP1228

Fig. 38 Window frame assembly removal.

Glass Cleaning

It is necessary to periodically clean the glass. During
start-up condensatioFn,Pw1h2ic2h8is normal, forms on the inside of the glass. Trheismcoovnedegnlsaastisonfrcaamusees lint, dust and other airborne p1ar1ti/c0le2s to cling to the glass surface.
Also initial paint curing may deposit a slight film on the glass. It is therefore recommended that the glass be cleaned two or three times with a non- ammonia based household cleaner and warm water (We recommend gas fireplace glass cleaner) within the first few weeks of operation.
After the initial cleaning process the glass should be cleaned two or three times during each operating season depending on the environment in the house.

Clean the glass after the first two weeks of operation.
Do not clean glass when hot.
Do not use abrasive cleaners.
Do not strike or slam glass.

23

LDVT Series Direct Vent Gas Fireplace

Installation of Logs, Lava Rock & Ember Material

The logs are fragile and should be handled with care. Keep the packaging material out of the reach of children and dispose of the material in a safe manner.
The individual logs can be easily identified by the numbers cast on the underside of each log.

Log Identification Chart

Location Front Left Front Right Front Center
Rear Rear Left Rear Right Top Center

33LDVT A43 —A41 A42 A44

36LDVT B160 B159 B161 B158 —-

39LDVT BC15 BC16 B138 BC14 —-

43LDVT BD16 BD17 B138 BD15 –BD18

Log Installation
1. Remove the top louvre assembly.
2. Open the bottom louvre. 3. Remove the window frame assembly. 4. Remove log box from inside firebox. 5. Unpack the logs from packaging and remove each
log from its wrapping material. Set aside the ember and the lava rock bags.
As with all plastic bags – these are not toys and should be kept away from children and infants.

33LDVT
1. Place rear log left (A41) on rear bracket (ensure the notch on the left end locates against the bend up on the left side of rear bracket.)
2. Place rear log right (A42) on rear bracket (ensure the notch on the right end locates against the bend up on the right side of rear bracket) and just rest the cut out from front log onto the front support.
3. Place front log left (A43). Use the log’s bottom hole to locate it onto rear log left (A41) and just rest bottom cut out log onto the front support.
4. Place top log center (A44). Use the log’s bottom hole to locate it onto the knob on the rear log right (A42) and the top log center rest onto rear log left.
5. Place ember material on top of burner. Scatter the ember material over the tiles on the front area of the burner housing. (Fig. 46) Do not pack the ember material. Separate it when unpacked and keep it in a fluffy and loose condition for a more realistic ember effect.
6. Scatter the lava rock material around the firebox base.
Do not place any of the lava rock material on the burner housing assembly.

Rear Left (A41)

Top Center (A44)

Rear Right (A42)

Figure 39

Front Left (A43)
24

LG382
10007852

LDVT Series Direct Vent GaS Fireplace

36LDVT

1. Place rear log (B158) on rear bracket (ensure log is

seated properly to the bracket and located to the

two pins), so it will not move from side to side and is firmly positioned on the bracket.

Figure 40

2. Place front left log (B160). Use the log’s bottom hole to locate it onto the front support and just rest on top of the rear log.

3. Place front right log (B159). Use the log’s bottom hole to locate it onto the front support and the top hole to the knob onto the rear log.

4. Place front center log (B161) on top of the two small shelves at the front log support and between the left and right logs.

5. Place ember material on top of

burner. Scatter the ember material

over the tiles on the front area of the burner housing. (Fig. 46) Do not pack the ember material. Separate it

Front Left (B160)

when unpacked and keep it in a fluffy

and loose condition for a more realistic ember effect.

6. Scatter the lava rock material around the firebox base.

Do not place any of the lava rock material on the burner housing assembly.

39LDVT

1. Place rear lob (BC14) on rear bracket (ensure log is centered and seated properly to the log support).

Front Left (BC15)

2. Place front left log (BC15). Use log’s bottom hole to locate it onto the front support and just rest on top of the rear log.

3. Place front right log (BC16). Use log’s bottom hole to locate it onto the front support and the top hole to the knob on the rear log.

4. Place front center log (B138) on top of the two small shelves at the front log support, and between the left and right logs.

5. Place ember material on top of burner. Scatter the ember material over the tiles on the front area of the burner housing. (Fig. 46) Separate it when unpacked and keep it in a fluffy and loose condition for a more realistic ember effect.

Do not place any of the lava rock material on the burner housing assembly.

Rear (B158)

Front Center (B161)

LG481 Front Right (B159)

Figure 41

Front Right (BC16)

Rear (BC14)

Front Center (B138)

LG414

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25

LDVT Series Direct Vent Gas Fireplace

43LDVT

1. Place rear log (BD15) on rear bracket (ensure log is centered and seated properly to the log support).

2. Place front left log (BD16). Use log’s bottom notch

to locate it onto the front support and just rest on

top of the burner housing assembly.
3. Place front right log (BD17). Use log’s bottom notch to locate it onto the front

Front Left (BD16)

support and just rest on top of the

burner housing assembly.

4. Place ember material on top of burner.

5. Scatter the ember material over the tiles on the front area of the burner housing. (Fig. 42) Do not pack the ember material. Separate it when unpacked and keep it in a fluffy and loose condition for a more realistic ember effect.

6. Place front center log (B138) on top of the two small shelves at the front log support, and between the left and right logs.

7. Place top center log (BD18) on top of the rear log using the hole locator under the log and on top of front right log.

8. Scatter lava rock material round the firebox base.

Do not place any of the lava rock material on the burner housing assembly.

Rear (BD15)

Top Center (BBD18) Figure 42

Front Right (BD17)

Lava Rock

Front Center (B138)

Lava Rock

LG434

Ember Material

FlameCha racteristics

Flame & Temperature Adjustment
RN/RP & EN/EP Models
For units equipped with HI/LO’ valves the flame adjustment is accomplished by rotating theHI/LO’ adjustments knob located near the center of the gas control valve. (Fig. 43)

It is important to periodically perform a visual check of the pilot and burner flames. Compare them to Figures 44 and 45.
If the flame patterns appear abnormal contact a qualified service provider for service and adjustment.

Turn counterclockwise
to increase flame height

LO

H I

Turn clockwise to decrease flame height

Fig. 43 Flame adjustment knob for SIT valve.

SIT RN/RP

FP390 FLAME ADJUSTMENT KNOB 11/21/96

SIT EN/EP, IN/IP

Fig. 44 Correct pilot flame appearance.

FP1541

26

10007852

LDVT Series Direct Vent GaS Fireplace

33LDVT

LG384
Figure 45

Glowing Embers

36LDVT

LG384 33LDV log flames 1/05

LG415

Glowing Embers

LG482 Glowing Embers
39LDVT

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43LDVT
LG435

Glowing Embers
27

LDVT Series Direct Vent Gas Fireplace

Lighting and Operating Instructions

FOR YOUR SAFETY READ BEFORE LIGHTING

WARNING:If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life.

A. This heater has a pilot which must be lit manually. When lighting the pilot follow these instructions exactly.
B. BEFORE LIGHTING smell all around the heater 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 fireplace · Do not touch any electric 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
Fire Department C. Use only your hand to push in or turn the gas
control knob. Never use tools. If the knob will not push in or turn by hand, do not try to repair it, call a qualified service technician. Applying force or any attempted repair may result in a fire or explosion. D. Do not use this fireplace if any part has been under water. Immediately call a qualified service technician to inspect the heater and to replace any part of the control system and any gas control which has been under water.

Lighting Instructions

1. STOP! Read the safety information above. 2. Turn off all electrical power to the fireplace. 3. Turn the ON/OFF switch to “OFF” position. 4. Open control access panel. 5. Push in gas control knob slightly and turn clockwise
to “OFF”.

PILOT

10. Push the control knob all the way in and hold. Immediately light the pilot by repeatedly depressing the piezo spark ignitor until a flame appears. Continue to hold the control knob in for about one (1) minute after the pilot is lit. Release knob and it will pop back up. Pilot should remain lit. If it goes out, repeat steps 5 through 8.
3/8″ – 1/2″

OFF Pilot
OFF

12

OFF

34 5

SIT NOVA Honeywell

6. Wait five (5) minutes to clear out any gas. Then

smell for gas, including near the floor. If you smell

gas, STOP! Follow “B” in the safety information

above. If Remove

gyloFlkaignPusho1tbsi0dns6god7ionnsootrrutcbstiemonfoerlel gliagsh,tignog

to the pilot.

next (See

step. Glass

Frame Rem3/9o/0v1al dsjtection).

8. Visibly locate pilot by the main burner.

9. Turn knob on gas control counterclockwise

to “PILOT”.

· If knob does not pop up when released, stop and

immediately call your service technician or gas

supplier.

· If after several tries, the pilot will not stay lit, turn

the gas control knob to “OFF” aFnPd1c0a68ll your serv-

ice technician or gas supplier. Lighting instructions

11. Replace glass door.

Pilots

12. Turn gas control knob to “ON” position.

13. Turn the ON/OFF switch to “ON” position or set

thermostat to desired setting.

14. Turn on all electrical power to the fireplace.

To Turn Off Gas To Heater

1. Turn the ON/OFF switch to Off position.
2. Turn off all electric power to the fireplace if service is to be performed.
3. Open control access panel.

4. Push in gas control knob slightly and turn clockwise to “OFF”. Do not force.
5. Close control access panel.

28

10007852

LDVT Series Direct Vent GaS Fireplace

Lighting and Operating Instructions
For Fireplaces equipped with SIT822 Gas Valve (EN or EP) WARNING:
If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury and loss of life.
FOR YOUR SAFETY READ THE FOLLOWING WARNINGS BEFORE LIGHTING THE APPLIANCE

A. This fireplace is equipped with an ignition device which automatically lights the pilot. DO NOT try to light the pilot by hand.
B. BEFORE OPERATING, smell all around the appliance area for gas. Be sure to smell next to the floor because some gas is heavier than the air and will settle on the floor. What to do if you smell gas
· Do not try to light any appliance · Do not operate any electrical switch. · Do not use any phone in your building. · Immediately call your gas supplier from a
neighbor’s phone.

Follow the gas suppliers instructions.
· If you cannot contact your gas supplier call
the Fire Department C. Use only your hand to push in or turn the gas
control knob. Never use tools. If the knob will not push in or turn by hand do not try to repair it, call a qualified service technician. Force or attempting 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 replace any part of the control system and any gas control that has been under water.

Lighting Instructions

LO

1. STOP! Read the safety information above before continuing.
2. Turn off all electrical power to the appliance. 3. This appliance is equipped with an ignition device
which automatically lights the pilot. DO NOT try to light the pilot by hand. 4. Access the gas control by lowering the lower access door (louvre assembly).
HI

5. Turn the remote switch, if used, OFF. Turn the wireless remote, if used, OFF.
6. Wait five (5) minutes to clear out any gas. Then smell for gas, including near the floor. If you smell gas STOP. Follow instructions B in the safety warnings above. If you do not smell gas go onto the next step.
7. Close the access door.
8. Turn ON all electrical power to the appliance.
9. Turn remote switch or wireless remote to “ON”.
10. If the appliance will not operate, follow the instructions TURNING OFF THE GAS TO THE APPLIANCE and call your service technician or gas supplier.

Turning Off the Gas to the Appliance

1. Turn the remote switch to the “OFF” position. 2. Turn OFF all electrical power to the fireplace if
service is required. 3 Open the lower access panel. 4. Turn the shut-off valve on the flexible gas line to
the “OFF” position.

1/2″ Gas Supply

1/2″ NPT x 1/2″ Flare Shut-Off Valve
3/8″ Flex Line (From Valve)

Valve in the on position

FP297A

10007852

FP297A

29

LDVT Series Direct Vent Gas Fireplace

Lighting & Operating Instructions

For Fireplaces equipped with AF4000 Gas Valve
Warning
If you do not follow these instructions exactly, a fire or explosion may result, causing property damage, personal injury and loss of life.

For Your Safety, Read the Following Warnings

before Lighting the Appliance

A. This fireplace is equipped with an ignition device which automatically lights the pilot. DO NOT try to light the pilot by hand.
B. BEFORE OPERATING, smell all around the appliance area for gas. Be sure to smell next to the floor because some gas is heavier than the air and will settle on the floor.
What to do if you smell gas
· Do not try to light any appliance. · Do not operate any electrical switch.

· Do not use any phone in your building. · Immediately call your gas supplier from a
neighbor’s phone. Follow the gas suppliers instructions.
· If you cannot contact your gas supplier call the
Fire Department C. Do not use this appliance if any part has been under
water. Immediately call a qualified service technician to inspect the appliance and replace any part of the control system and any gas control that has been under water.

Lighting Instructions

1. STOP! Read the safety information above before

continuing. 2. This appliance is equipped with an ignition device

Spark to Pilot Pilot Assembly

which automatically lights the pilot. DO NOT try to

light the pilot by hand. 3. Turn the remote switch, if used, OFF. Turn the

“S” Connection Connect to Module

wireless remote, if used, OFF.

Pilot Adjustment

4. Wait five (5) minutes to clear out any gas. Then

Screw

smell for gas, including near the floor. If you smell gas, STOP. Follow instruction B in the

Inlet Pressure Tap

Main Valve Internal Solenoid Connection Green & White Wires

safety warnings above. If you do not smell

Pilot Gas Connection Side or Back

gas, go on to the next step.

“I” Connection Connect to Module

5. Turn on electrical power to the appliance.
6. Turn remote switch or wireless remote to ON.

Flame Control Knob

7. If the appliance will not operate, follow the instructions TURNING OFF THE GAS TO THE APPLIANCE, and call your service technician or gas supplier.

Minimum Rate Screw

Outlet Pressure Tap

Black Plastic Cap

Pilot Internal Solenoid Connection Orange & White Wires

Turning Off the Gas to the Appliance

1. Turn the remote switch to the OFF position.
2. Turn OFF all electrical power to the fireplace if service is required.
3. Open the lower access panel.
4. Turn the shut-off valve on the flexible gas line to the OFF position.

1/2″ Gas Supply

1/2″ NPT x 3/8″ Flare Shut-Off Valve
3/8″ Flex Line (From Valve)

Valve in the “ON” position

30

10007852

LDVT Series Direct Vent GaS Fireplace

Troubleshooting the Gas Control System

SIT NOVA 820 Millivolt Valve
NOTE: Before trouble shooting the gas control system, be sure external gas shut off is in the “On” position.

WARNING: Before doing any gas control service work, remove glass front.

SYMPTOM 1. Spark ignitor will not light

POSSIBLE CAUSES A. Defective or misaligned
electrode at pilot.

B. Defective ignitor (Push button)

CORRECTIVE ACTION Using a match, light pilot. If pilot lights, turn off pilot and push the red button again. If pilot will not light – check gap at electrode and pilotshould be 1/8″ to have a strong spark.
Push Piezo Ignitor Button. Check for spark at electrode and pilot. If no spark to pilot, and electrode wire is properly connected, replace ignitor.

2. Pilot will not stay lit after carefully following lighting instructions.

A. Defective pilot generator Check pilot flame. Must impinge on thermo-

(thermocouple), remote wall couple/thermopile. Note: this pilot burner

switch

assembly utilizes both-a thermocouple and a ther-

mopile. The thermocouple operates the main valve

operation (On and Off). Clean and or adjust pilot for

maximum flame impingement on thermopile and

thermocouple.

B. Defective automatic valve

Turn valve knob to “Pilot”. Maintain flow to pilot; milivolt meter should read greater than 10 mV. If the reading is okay and the pilot does not stay on, replace the gas valve. Note: An interrupter block (not supplied) must be used to conduct this test.

3. Pilot burning, no gas to main burner
4. Frequent pilot outage problem.

A. Wall switch or wires

Check wall switch and wires for proper connections

defective

Jumper wire accross terminals at wall switch, if

burner comes on, replace defective wall switch. If

okay, jumper wires across wall switch wires at valve,

if burner comes on, wires are faulty or connections

are bad.

B. Thermopile may not be

1. Be sure wire connections from thermopile at gas

generating sufficient

valve terminals are tight and thermopile is fully

millivoltage

inserted into pilot bracket.

2. One of the wall switch wires may be grounded.

Remove wall switch wires from valve terminals if

pilot now stays lit, trace wall switch wiring for

ground. May be grounded to fireplace or gas

supply.

3. Check thermopile with millivolt meter. Take

reading at thermopile terminals of gas valve.

Should read 250-300 millivolts (minimum 150)

while holding valve knob depressed in pilot

position and wall switch “Off”. Replace faulty

thermopile if reading is below specified minimum.

C. Plugged burner orifice.

Check burner orifices for debris and remove.

D. Defective automatic valve Turn valve knob to “On”, place wall switch to “On”

operator.

millivolt meter should read greater than 100 mV. If

the reading is okay and the burner does not come

on, replace the gas valve.

A. Pilot flame may be too low Clean and/or adjust pilot flame for maximum flame

or blowing (high) causing the impingement on thermopile and thermocouple.

pilot safety to drop out.

B. Possible blockage of the Check the vent terminal for blockage (recycling the

vent terminal.

flue gases)

10007852

31

LDVT Series Direct Vent Gas Fireplace

Troubleshooting the Gas Control System

SIT 822 Valve with Synetek Electronic Control Operating Diagram

Normal Operation

Abnormal Operation

ON/OFF Switch Closed? YES

5 sec Inter-Trial Delay

Safe Start Check On?

NO

YES

0 Sec Purge

Ignition Trial: 30 sec Spark ON

Pilot Valve ON. Has Flame

NO

been Detected within 30 sec?

Spark Off. Main Valve ON. Pilot Flame Continuously Monitored

Pilot Flame Sense OK?

NO

LED: Steady Flash? Lockout: Flame detected out of sequence Reset by interrupting ON/OFF switch or power for 10 sec

LED: 5 Flashes? Reverse power cord polarity

LED: 2 Flashes? Reset by interrupting ON/OFF switch for power for 10 sec

YES

Pilot, Valve OFF, Spark OFF Have three ignition trials been completed?

NO

LED: 3 Flashes? Lockout: Flame Loss Reset by interrupting ON/OFF switch or power for 10 sec

ON/OFF Switch Opened? YES
Pilot and Main Valve OFF? YES

YES Main Valve OFF, Spark ON Has flame been detected within 30 sec?

NO

Have three pilot flame losses been detected?

YES

0 sec Post Purge?

Heating Cycle Complete LED: OFF
32

10007852

LDVT Series Direct Vent GaS Fireplace

Troubleshooting
American Flame Gas Control System
If erratic system behavior is observed that cannot be resolved by the methods outlined below, ensure that there is not a transmitter with batteries installed that may be interfering. If a transmitter is packed with batteries installed, its buttons may be depressed sending a constant signal which can interfere with the transmission of desired signals. A transmitter with new batteries can have a range of over 100′ (30.4 m). (Page 10, Fig. 10)

Fireplace will not light Pilot will not light/stay lit
Pilot flame is always on/ will not extinguish Main flame will not light

· Ensure the REMOTE/OFF switch on the side of the module (Fig. 46) is set to OFF.
· Make sure the leads from the AC power adapter are securely connected to the POWER terminals on the control module and 120V AC power is available. (Fig. 47)
· Make sure the remote wall switch is wired correctly.
· Verify the gas supply is turned on.
· Ensure the orange lead from the pilot assembly igniter is securely connected to the terminal labeled “I” and the white lead from the flame rectification sensor is securely connected to the terminal labeled “S” on the control module. (Fig. 46)
· Make sure the orange and white leads from the module are securely connected to the terminals labeled “PILOT” on the valve body. (Fig. 48)
· Ensure the black GROUND wire is securely connected to an appropriate metal portion of the valve or pilot assembly. A proper ground is essential to spark igniter operation.
· Make certain the pilot flame is in contact with the flame rectification sensor on the pilot assembly. This valve is equipped with a pilot flame adjustment screw. (Fig. 48) If the pilot flame is too small it will not contact the flame rectification sensor and will not complete the safety circuit.
· Check continuity of pilot coil on valve. Remove wire connector. If there is no continuity on pin terminals, replace valve.
· Ensure the CONTINUOUS PILOT switch on the control module (Fig. 46) is set to OFF.
· Verify the gas supply is turned on.
· Ensure the pilot flame will ignite. If not, see pilot flame troubleshooting above.
· Make sure the green and white leads from the module are securely connected to the terminals labeled “MAIN: on the valve body. (Fig. 48)
· Make certain the pilot flame is in contact with the flame rectification sensor on the pilot assembly. This valve is equipped with a pilot flame adjustment screw. (Fig. 48) If the pilot flame is too small it will not contact the flame rectification sensor and will not complete the safety circuit.
· Ensure the pilot flame is properly located to ignite the main flame.
· Check continuity of main burner coil in gas valve. Remove wire connector. If there is no continuity, replace valve.

10007852

33

LDVT Series Direct Vent Gas Fireplace Troubleshooting American Flame Gas Control System (continued)

Figure 46: AF4000 MOD Module Right Side

Continuous PIlot Off/On Switch

Remote/Off Switch

Adjustment

“S” Pilot Connection

“I” Pilot

FP1762

Connection

Figure 47: AF4000 MOD Module End

6 Volt DC Adapter Power Connection

8CoPninneIPctIion

Figure 48: AF4000 Valve Face
Main Connection

FP1764

Inlet

MAIN

Pilot Adj.

PILOT

Outlet

Pilot Connection

FP1769

34

10007852

LDVT Series Direct Vent GaS Fireplace
American Flame Gas Control System Error Codes
Ignition Safety: Protection for Ignition System Error Code: One beep every one second Description of Fault: Warn users if the pilot is not successfully ignited in 60 seconds. How to Clear: Switch OFF then ON to re-attempt ignition. What to Check:
· Ensure gas supply is turned on. · Ensure orange/white leads from module are plugged into the “PILOT” connection on the valve body. · Verify the lead from igniter on pilot assembly is connected to the “I” terminal on the module. · Verify lead from flame sensor on pilot assembly is connected to the “S” terminal on the module. · Verify that the black ground lead form the module is connected to a proper ground on the fireplace. · Ensure there is no blockage in the pilot line.
Sensor Safety: Protection for Flame Sensor Error Code: 4 beeps every one second Description of Fault: Warn users the pilot flame sensor detects a pilot flame already present when ignition sequence is initiated. This fault will also occur if pilot flame sensor is shorted to ground. How to Clear: Switch OFF then ON to re-attempt normal ignition. What to Check:
· Check if pilot flame is actually present when valve is turned OFF (valve replacement necessary if yes). · Replace pilot assembly. · Replace module.
Thermal Safety: Overheat Protection Error Code: 4 beeps every two seconds. Description of Fault: Warn users that the module’s internal temperature has exceeded 170° F (77° C). How to Clear: Turn off fireplace. The module’s internal temperature must cool to below 160° F (71° C). Then switch to ON. What to Check:
· Is module located in unapproved location, too close to burner? · Move to cooler location.

10007852

35

LDVT Series Direct Vent Gas Fireplace
Converting the Appliance From LP to Natural Gas or Natural Gas to LP
The conversion of this appliance from one gas to another must be carried out by an authorized service provider. The procedure for converting from one gas to another is the same regardless of the initial gas used. The only variation is in the orifice-sizes and component part numbers. Your authorized service provider will ensure the correct parts are used. 1. Disconnect power to unit and shut off gas supply. 2. Remove window frame assembly. 3. Carefully remove the logs & lava rock material. 4. Remove the screws that are holding the burner housing assembly in place. 5. Remove the burner housing assembly. Depending on the model of the appliance you may have to loosen the pilot bracket retaining screw/nut to allow the pilot and bracket assembly to tilt and give enough clearance to remove the burner housing assembly. 6. For Model 36LDVT ONLY: Remove the rear log support and relocate the two (2) screws that locate the rear log as shown in Figure 49.
Natural Gas
Log Locator Pin
Propane Gas

Log Locator Pin

KT615

Fig. 49 Move log locator pins to new locations on rear log support.
7. Remove the main burner orifice and replace it with
PSIiTltohTetoOporrCifiiocfiencvseeurpCtpibolilenedvPienilrotshteiocnonversionkit. Gently lift off the pilot hood fromthe pilot. (Do not re-
move the spring clip holding the hood in place). Using a 5/32″ Allen key, unscrew the exposed orifice. Insert the new orifice supplied in the kit, do not over tighten the orifice. Replace the pilot hood ensuring the index tab aligns with the notch on the hood.

36

PSE Pilot
Using a suitable wrench on the hexagonal body unscrew the pilot hood assembly from the pilot, do not twist the hood itself. Remove the orifice and replace it with the new orifice supplied in the kit. Refit the pilot hood assembly. Do not over-tighten the pilot hood. The hood must return to its original alignment. Take care not to damage the thermocouple, thermopile or igniter.
Valve Conversion
SIT 820 NOVA Gas Control Valve (Fig. 50)
1. Using a Torx T20 or slotted screwdriver, remove and save the three pressure regulator mounting screws (A), pressure regulator tower (B) and diaphram (C).
2. Ensure the rubber gasket (D) is properly positioned

A

E

B

F PIL F PIL

C
OF

OT O

OF
D

OT O

F

820

Fig. 50 Nova SITFS8CIT18202700 gas valve.
valve conversion

FC108

and install the10/0n3 ew HI/LO preSsIsTure regulator to the

valve using the new screws (rEe)gusluaptoprlied with the

kit. Tighten screws securely. (cRonevfeerrseionnce torque – 25

in.LB)

10/03

3. Install the enclosed identification label (F) to the valve body where it can be easily seen.

AF4000 Gas Control Valve

The AF4000 electronic control valve is convertible from natural gas to propane gas by changing the minimum rate screw in the valve and by rotating a plastic knob located under a black cap on the top face of the valve.

1. Remove the black cap by pulling the cap straight off. Note the position of the marker on the top of the rotary knob. This marker will point to NAT or LP. (Fig. 51)

2. To convert the valve from NG to LP, push in the knob and rotate 90° (1/4 turn). NOTE: The shaft should point to LP and the shaft will remain pushed in.

3. Remove the minimum rate screw, using a small screwdriver, located in the valve next to the motor drive. (Fig. 51)

4. Replace the minimum rate screw with the new minimum rate screw supplied in the conversion kit. Ensure the screw is fully installed. Replace plug.

10007852

LDVT Series Direct Vent GaS Fireplace

Main Connection

MAIN Inlet

Pilot Adj.

PILOT

Outlet

Gas Type Marker

Rubber Cap

Minimum (LP Position Shown)

FP1769a

Rate Screw

CO137

Fig. 51 Remove rubber cap and adjust gas type marker.

5. Turn on gas supply and check that plugs are tight

and leak free. FP1769

6. Install thA2/F0e4700e0nvaclvelofasceed identification label to the valve body where it can easily be seen.

Conversion is complete.

1. Reassemble the fireplace in the reverse order, except for the window frame assembly. Leave this off until after the unit has been checked for leaks and the gas supply has been bled.
2. After bleeding the gas line and checking for leaks with a soap solution, replace the window frame assembly. Fire up the unit, check for flame impingement on the logs, adjusting them if necessary. Check the manifold and supply pressures against the appliance specifications.

10007852

37

LDVT Series Direct Vent Gas Fireplace

Maintenance

Burner and Burner Compartment

It is important to keep the burner and the burner compartment clean. At least once per year the logs and lava rock/ember material should be removed and the burner compartment vacuumed and wiped out. Remove and refit the logs as per the instructions in this manual.

Always handle the logs with care as they are fragile and may also be hot if the fireplace has been in use.

FK24/FK12 Fan Assembly

The fan unit requires periodic cleaning. At least once per month in the operating season open the lower louvre panels and wipe or vacuum the area around the fan to remove any build up of dust or lint.

Brass Trim

Clean the brass trim pieces using a soft cloth lightly dampened with lemon oil. Do not use water or household cleaners on any brass components.

Cleaning the Standing Pilot Control System

The burner and control system consist of:

· burner

· gas orifice

· pilot assembly · thermopile

· millivolt gas valve

Most of these components may require only an occasional checkup and cleaning and some may require adjustment. If repair is necessary, it should be performed by a qualified technician.
1. Turn off pilot light at gas valve. 2. Allow fireplace to cool if it has been operating. 3. Remove window frame assembly. (Refer to Window
Frame Assembly Removal section.) 4. Remove logs. 5. Vacuum burner compartment especially around
orifice primary air openings. 6. Visually inspect pilot. Brush or blow away any dust
or lint accumulation. 7. Reinstall logs. 8. Ignite pilot – Refer to Lighting Instructions. 9. Reinstall window frame assembly.
To obtain proper operation, it is imperative that the pilot and burner’s flame characteristics are steady, not lifting or floating.
Typically, the top 3/8″ to 1/2″ of the thermopile should be engulfed in the pilot flame. (Refer to Page 26, Figure 44)
To adjust pilot burner: (by qualified service technician)
1. Remove pilot adjustment cap
2. Adjust pilot screw to provide properly sized flame.
3. Replace pilot adjustment cap.
The primary air shutter is set at factory and should only be adjusted, if necessary, by a qualified service technician.

38

10007852

1

33LDVT

1e

1a

1g

1h

1i

17 21

LDVT Series Direct Vent GaS Fireplace

1 1d
1f 1a
18a,b

36LDVT
1b 1c
2

1 1d
1a
3

LO

HI 23

39LDVT

1d

43LDVT

1b 1c
12 6a,b

1g 1a
1c
14 11 7a,b

1b
9 16

19a,b

15

13

8

20

26

29

31

22 33
34 46

24 40
25 30
39
35 37

42

49

43

48

32

44

41
45 48
ON H/L
OFF/CONTINUOUS PILOT BUTTON

MHSC reserves the right to make changes in design, materials, specifications, prices and discontinue colors and products at any time, with out notice.

33/36/39/43LDVT 7852 LDVT parts 33LDVT units: GFTN2I0, GFTL2I0, GFTE2I0, GFT1I/30I50
36LDVT units: GFTN2J1, GFTL2J1, GFTE2J1, GFTI3J0
39LDVT units: GFTN2K0, GFTE2K0, GFTI3K0
43LDVT units: GFTN2N0, GFTE2N0

10007852

39

LDVT Series Direct Vent Gas Fireplace
33/36/39/43LDVT (continued)
Ref. Description 1. Log Set (complete)
1a. Front Left Log 1b. Front Right Log 1c. Front Center Log 1d. Rear Log 1e. Rear Left Log 1f. Rear Right Log 1g. Top Center Log 1i. Lava Rock Package 1k. Ember (Package) 2a. Burner Housing Assy – Natural 2b. Burner Housing Assy – Propane
3. Ceramic Tile (Single) 4a. Orifice Burner – Natural 4b. Orifice Burner – Propane 5a. Orifice Pilot – Natural 5b. Orifice Pilot – Propane 6a. Pilot Assy SIT – RN 6b. Pilot Assy SIT – RP 7a. Pilot Assy SIT – EN 7b. Pilot Assy SIT – EP
8. Pilot Tubing w/Fittings SIT 9. Pilot Hood 10. Manifold Tubing w/Fittings 11. Thermocouple – RN/RP 12. Thermopile – RN/RP 13. Electrode Ignitor w/Cable -RN/RP 14. Electrode Ignitor – EN/EP 15. Cable Ignitor – EN/EP 16. Sensing Electrode – EN/EP 17. Ignitor Piezo, SIT 820 Valve 18a. Valve SIT 820 – RN 18b. Valve SIT 820 – RP 19a. Valve SIT 822 – EN 19b. Valve SIT 822 – EP 20. Flexible Gas Line w/ON/OFF Shut-off Valve 21. Fan Assy (w/Brkt) (FK24 Option) 22. Fan Assy (FK12 Option) 23. Electrical Cord (6 ft.) 24. Fan Temperature Sensor (FK24) 25. Speed Control (FK24) 26. Speed Control Knob (FK24) 29. Frame Window w/glass 30. Clamp Frame Window 31. Top Louvre Assy 32. Bottom Louvre Assy

33LDVT

36LDVT

39LDVT

10007567

10010113

10008214

A43

B160

BC15

—

B159

BC16

—

B161

B138

—

B158

BC14

A41

—

—

A42

—

—

A44

—

—

10001454

10001454

10001454

51915

51915

51915

10007558

10007127

10008218

10007558

10008042

10008586

57803

57803

57803

Refer to Rating Plate for Orifice Size

Refer to Rating Plate for Orifice Size

10002268

10002268

10002268

10002269

10002269

10002269

10002264

10002264

10002264

10002265

10002265

10002265

10002387

10002387

10002387

10002388

10002388

10002388

10001296

10001296

10001296

10002385

10002385

10002385

57318

57318

57318

53373

53373

53373

51827

51827

51827

10001297

10001297

10001297

52465

52465

52465

10000696

10000696

10000696

57885

57885

57885

52464

52464

52464

52677

52677

52677

52678

52678

52678

57884

57884

57884

57883

57883

57883

20002500

20002500

20002500

ZA1100

ZA1100

ZA1100

ZA1110

ZA1110

ZA1110

51865

51865

51865

51704

51704

51704

51738

51738

51738

51882

51882

51882

10009693

10009694

10009695

54174

54174

54174

10007400

10007090

10007984

10007397

10007092

10007986

43LDVT 10008314
BD16 BD17 B138 BD15
–BD18 10001454 51915 10008464 10008587 57803
10002268 10002269 10002264 10002265 10002387 10002388 10001296 10002385
57318 53373 51827 10001297 52465 10000696 57885 52464 52677 52678 57884 57883 20002500 ZA1100 ZA1110 51865 51704 51738 51882 10008535 54174 10008311 10008307

40

10007852

33/36/39/43LDVT (continued)
Ref. Description
33a. Support Rear Log – Natural 33b. Support Rear Log – LP
34. Support Front Log 35. ON/OFF Switch 37. Relief Plate Assy (Burner Base) 38. Remote Switch Kit (Not Shown) 39. Ignition Control from Synetek (EN) 40. Wire Harness (EN) Synetek (low voltage) 41. Wire Harness (EN) Synetek (high voltage) 42. Restrictor Plate 43. Clevis Pin 44. Clip Pin Hitch 45. Main Module (IN) 46. AC Adaptor (IN) 47. 24″ Wire Harness (IN) 48. Remote Control (IN) 49. American Flame Valve AF-4010-IN Assy

LDVT Series Direct Vent GaS Fireplace

33LDVT
10007561 10007561 10007562
51842 10004192
53875 10007939 10008139 10008140
-10008615 10008616 20011895 20011900 20012258 20011904 20013151

36LDVT
10007162 10008045 10007112
51842 10004192
53875 10007939 10008139 10008140 10008048 10008615 10008616 20011895 20011900 20012258 20011904 20013151

39LDVT
10008211 10008211 10008416
51842 10004192
53875 10007939 10008139 10008140 10008048 10008615 10008616 20011895 20011900 20012258 20011904 20013151

43LDVT
10008480 10008490 10008469
51842 10004192
53875 10007939 10008139 10008140 10008048 10008615 10008616
n/a n/a n/a n/a n/a

Fuel Conversion Kits Conversion Kit, NG to LP
33LDVTRN/EN 33LDVTIN 36LDVTRN/EN 36LDVTIN 39LDVTRN/EN 39LDVTIN 43LDVTRN/EN Conversion Kit, LP to NG 33LDVTRP/EP 33LDVTIP 36LDVTRP/EP 36LDVTIP 39LDVTRP/EP 39LDVTIP 43LDVTRP/EP

Kit # 10008233 Kit # 20014312 Kit # 10008235 Kit # 20014313 Kit # 10008237 Kit

20014314 Kit # 10008239

Kit # 10008234 Kit # 20014315 Kit # 10008236 Kit # 20014316 Kit # 10008238 Kit

20014317 Kit # 10008240

10007852

41

LDVT Series Direct Vent Gas Fireplace

Optional Accessories

Fan Kits
FK24 Fan Assembly This auxiliary fan system increases the efficiency of the circulation of the heating air. The FK24 fan kit allows variable speed control of the circulation fan and also incorporates a heat sensor in the circuit. Specifications 115 Volt / 60Hz / 56 Watts Maintenance The fan itself does not require regular maintenance, however periodic cleaning of the fan and the surrounding area is required. Check the area under the control door (lower louvre assembly) and in front of the fan and wipe or vacuum this area at least once a month during the operating season. Installation The fan assembly and other components are supplied fully wired eliminating the need for a licensed electrician to carry out the installation. If hard wiring the fan using Method B (following), we strongly recommend the use of a licensed electrician. 1. Open the lower louvre assembly. Maneuver the fan
& bracket assembly around the gas valve and lines to locate the unit onto the screw studs on the back of the fireplace. 2. Install the thermal sensor under the bottom of the of the firebox, locating it over the two 10 mm studs and secure it with nuts. 3. Locate the fan speed control unit. This can be fitted behind the lower louvre assembly as in Figure 52 or located remotely in a conveniently located wall mounted electrical box. Remote location of the speed control will require suitable extension of the component wiring. 4. The power supply may be connected in two ways: Method A Route the 6′ lead fitted to the unit to a conveniently located wall socket. Method B (Using EB-1 Receptacle Box) The EB-1 receptacle box (Pt. # ZA1200) may be hard wired into the house supply. The fan lead is then plugged into the EB-1 box. For instruction on wiring the EB-1 Electrical Junction Box see the earlier chapter in the Installation section of this manual.

Thermal Sen-

sor

Fan

Fan Speed FP1230 Switch

Gas Lines

EB-1 Receptacle Box

Fig. 52 FK24 fan placement.

FK12

This auxiliary fan system circulation of the heating

aiFnircP. re1a2s3e0s

the

efficiency

of

the

The FK12 Fan Assembly iFs Ka 2fix4ed speed fan system

and does not allow for varfiaabnleinsspetaeldl control. It does

not use the in the FK24

speed Kit.

control

1u1n/it0o2r

the

heat

sensor

used

Specifications

115 Volts / 60 Hz / 56 Watts.

Maintenance

The fan itself does not require regular maintenance, however periodic cleaning of the fan and the surrounding area is required.

Check the area under the control door (lower louvre assembly) and in front of the fan and wipe or vacuum this area at least once a month during the operating season.

Installation

The fan assembly is supplied fully wired eliminating the need for a licensed electrician to carry out the installation.

1. Open the lower Louvre assembly. Maneuver the fan & bracket assembly around the gas valve and lines to locate the unit against the back wall of the appliance, resting on the base.

2. With the protective cover removed from the selfadhesive `Velcro’ strips apply mild pressure to the fan & bracket unit to secure the strips to the metal panels. No further securing is required.

3. Power to the fan can be supplied by plugging the supplied lead into a conveniently located wall socket or by using a hard-wired EB-1 connector box.

42

10007852

Wiring Instructions
The fireplace, when installed, must be electrically connected and grounded in accordance with local codes or, in the absence of local codes, with the current CSA C22.1 Canadian Electric Code.
For USA installations follow the local codes and the national electrical code ANSI/NFPA No. 70.
Should this fan require servicing or repair the power supply must be disconnected. For rewiring of any replacement parts refer to Figure 53.
Any electrical re-wiring of this fan must be done by a licensed electrician.

Fan Temperature Sensor

Speed Control
Black White Ground

FP1025

Fig. 53 FK24 fan wiring. FP394
Ceramic RefWraIRcINtoGrDyIAPGaRnAeMls
11/20/96 Ceramic refractory panels are available for the LDV series appliances

Unit 33LDVT 36LDVT 39LDVT 43LDVT

Kit Model and Finish

Sandstone Red

Black

33LDVTCR

GAHC3J0 GAFC3J0 GABC3J0

39LDVCR

43LDVCR

Grey GAGC3J0

Take care when handling the refractory panels as they are fragile until held in place and supported.
Installation, refer to Figures 54 & 55

1. Remove the front window frame assembly.
2. Remove the logs.
3. Place the rear refractory panel in place. Locate the lower edge of the panel in the ledge formed by the top of the rear log support bracket.
4. Slide the side refractory panels into place to hold the rear panel secure. Repeat the procedure on the other side.
5. Replace the logs and window frame assembly.

LDVT Series Direct Vent GaS Fireplace
For aesthetic purposes we recommend aligning the horizontal mortar lines.

Side Panel

Back Panel Log Support
Burner Tray

Side Panel

Fig. 54 Ceramic panel installation.

FP1231

Rear Refractory Panel

Rear Panel Support Brackets

FP1231

Firebox Back Panel

Ceramic panels

11/02

Rear Log Support

Fig. 55 Rear refractory panel installation.

FP1232

Remote Controls

Optional different

fruenMmcRootiCotdenIescl oonfttrhoFr1FOeel1PuuNaa/nn10rp/Oic22tpcstFl3ieioaaF2rnnraec/smeasCvicaoilnpatbarlonelelteoldcontrol

RC2

ON/OFF and Temperature.

IMTFK Wall mounted thermostat control

10007852

43

LDVT Series Direct Vent Gas Fireplace

Optional Trim Kits

Louvre Accent Trim

Appliance Model Main Louvre Kit

Polished Brass

36LDVT

36DVLMP

39LDVT

39DVLMP

Rustic Bronze

33LDVT

33DVLMR

36LDVT

36DVLMR

Pewter

33LDVT

33DVLMS

36LDVT

36DVLMS

39LDVT

39DVLMS

43LDVT

43DVLMS

Regular Trim Kit

Appliance Model

Trim Kit

33LDVT

33DVRRKS

33LDVT

33DVRTKR

Adjustable Regular Trim Kit

Appliance Model

Trim Kit

36LDVT

ADVRRKS

36LDVT

ADVRTKR

39LDVT

ADVRRKS

39LDVT

ADVRTKR

Medium Trim Kit

Appliance Model

Trim Kit

33LDVT

33DVMTKS

33LDVT

33DVMTKB

Adjustable Medium Trim Kit

Appliance Model

Trim Kit

36LDVT

ADVMTKP

36LDVT

ADVMTKS

36LDVT

ADVMTKB

39LDVT

ADVMTKP

39LDVT

ADVMTKS

39LDVT

ADVMTKB

Additional Louvre
36DVLAP 39DVLAP
33DVLAR 36DVLAR
33DVLAS 36DVLAS 39DVLAS 43DVLAS
Pewter Rustic Bronze
Pewter Rustic Bronze
Pewter Rustic Bronze
Pewter Black
Polished Brass Pewter Black
Polished Brass Pewter Black

Screen Door Kit

Appliance Model
33LDVT 36LDVT 33LDVT 36LDVT 39LDVT 36LDVT

Kit Model
33DVSDKS 36DVSDKS 33DVSDKB 36DVSDKB 39DVSDKB 36DVSDKR

Pewter Pewter Black Black Black Rustic Bronze

Filigree Louvre Kit

Appliance Model
33LDVT 36LDVT 36LDVT 36LDVT

Kit Model
33DVFKB 36DVFKB 36DVFKS 36DVFKR

Black Black Pewter Rustic Bronze

Arch/Square Face Kit

for the 36LDVT
Romanesque – Arch 36DVARFKB 36DVARFKR 36DVARFKS
Romanesque – Square 36DVSRFKB 36DVSRFKR 36DVSRFKS
Marquette – Arch 36DVAMTKB 36DVAMTKR 36DVAMTKS
Marquette – Square 36DVSMTKB 36DVSMTKR 36DVSMTKS

Black Rustic Bronze
Pewter
Black Rustic Bronze
Pewter
Black Rustic Bronze
Pewter
Black Rustic Bronze
Pewter

44

10007852

LDVT Series Direct Vent GaS Fireplace

10007852

45

LDVT Series Direct Vent Gas Fireplace

46

10007852

LDVT Series Direct Vent GaS Fireplace
LIMITED LIFETIME WARRANTY
Lifetime Warranty
The following components are warranted for life to the original owner, subject to proof of purchase: Firebox, Combustion Chamber, Heat Exchanger, Grate and Stainless Steel Burners.
Five Year Warranty
The following components are warranted for five (5) years to the original owner, subject to proof of purchase: Ceramic Fiber Logs.
Basic Warranty
MHSC warrants the components and materials in your gas appliance to be free from manufacturing and material defects for a period of two (2) years from date of installation. After installation, if any of the components manufactured by MHSC in the appliance are found to be defective in materials or workmanship, MHSC will, at its option, replace or repair the defective components at no charge to the original owner. MHSC will also pay for reasonable labor costs incurred in replacing or repairing such components for a period of two (2) years from date of installation. Any products presented for warranty repair must be accompanied by a dated proof of purchase.
This Limited Lifetime Warranty will be void if the appliance is not installed by a qualified installer in accordance with the installation instructions. The Limited Lifetime Warranty will also be void if the appliance is not operated and maintained according to the operating instructions supplied with the appliance, and does not extend to (1) firebox/burner assembly damage by accident, neglect, misuse, abuse, alterations, negligence of others, including the installation thereof by unqualified installer, (2) the costs of removal, reinstallation or transportation of defective parts on the appliance, or (3) incidental or consequential damage. All service work must be performed by an authorized service representative.
This warranty is expressly in lieu of other warranties, express or implied, including the warranty of merchantability of fitness for purpose and of all other obligations or liabilities. MHSC does not assume for it any other obligations or liabilities in connection with sale or use of the appliance. In states that do not allow limitations on how long an implied warranty lasts, or do not allow exclusion of indirect damage, those limitations of exclusions may not apply to you. You may also have additional rights not covered in the Limited Lifetime Warranty.
MHSC reserves the right to investigate any and all claims against the Limited Lifetime Warranty and decide upon method of settlement.
For information about this warranty, contact:
Technical Services MHSC 149 Cleveland Drive Paris. KY 40361

10007852

47

Model
33LDVTRN 33LDVTRP 33LDVTEN 33LDVTEP 33LDVTIN 33LDVTIP 36LDVTRN 36LDVTRP 36LDVTEN 36LDVTEP 36LDVTIN 36LDVTIP 39LDVTRN 39LDVTRP 39LDVTEN 39LDVTEP 39LDVTIN 39LDVTIP 43LDVTRN 43LDVTRP 43LDVTEN 43LDVTEP

Efficiency Ratings

EnerGuide Ratings Fireplace Efficiency (%)
56.0 56.0 63.3 63.3 63.3 63.3 55.0 55.0 60.6 60.6 60.6 60.6 51.4 51.4 55.4 55.4 55.4 55.4 55.7 55.7 59.8 59.8

Steady State (%)

Fan-OFF Fan-ON

77

78

78

79

77

78

78

79

77

78

78

79

78

79

79

80

78

79

79

80

78

79

79

80

76

77

77

78

76

77

77

78

76

77

77

78

76

77

77

78

76

77

77

78

D.O.E. (AFUE%)
58 58 58 58 58 58 58 58 58 58 58 58 63 63 63 63 63 63 63 63 63 63

MHSC
149 Cleveland Drive · Paris, Kentucky 40361 800-668-5323 · www.mhsc.com

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