Monessen Hearth Direct Vent Gas Insert IDV380NVC User manual

DIRECT VENT GAS INSERT
READ BEFORE INSTALLING. SAVE THESE INSTRUCTIONS
INSTALLATION AND
OPERATING
INSTRUCTIONS
MODELS:
IDV490NVC, IDV490PVC,
IDV380NVC, AND IDV380PVC
WARNINGS
IF THE INFORMATION IN THESE INSTRUCTIONS
ARE NOT FOLLOWED EXACTLY, A FIRE OR
EXPLOSION MAY RESULT CAUSING PROPERTY
DAMAGE, PERSONAL INJURY OR LOSS OF LIFE.
– Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or
any other appliance.
– WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any phone in your building.
• Immediately call your gas supplier from a neighbor's phone. Follow the gas supplier's
instructions.
• If you cannot reach your gas supplier, call the fire department.
– Installation and service must be performed by a qualified installer, service agency or the
gas supplier.
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.

2 57D0016
CONTENTS
Important Safety Information .......................... 3
Product Features .............................................. 5
Code Approval .................................................. 5
Pre-Installation Information
Installing Above 2000 Feet ............................ 6
Orifice Sizes, Pressures and BTUs ............... 6
Insert Dimensions ......................................... 6
Fireplace and Insert Dimensions .................... 7
General Installation Information ..................... 8
Clearances .................................................... 8
Installation ......................................................... 9
Insert Clearances .......................................... 9
Mantel Clearances ........................................ 9
Hearth Requirements .................................... 9
Insert Placement ......................................... 10
Zero-Clearance (Metal) Fireplace
Requirements ...............................................11
Vent Installation .............................................. 12
Installation Precautions ............................... 12
Vent Requirements ..................................... 13
Altitude Considerations ............................... 14
Vent Configurations ..................................... 15
Manifold Removal and Installation .............. 16
Insert Installation
Check Gas Type .......................................... 17
Installing Gas Piping to Insert/Burner System
Location ...................................................... 17
Checking Gas Pressure ................................. 19
Electrical Installation ..................................... 20
Electrical Wiring .......................................... 20
Remote Wall Switch .................................... 20
Log Placement ................................................ 21
Surround and Trim Installation ..................... 24
Installing Facing .......................................... 24
Installing On/Off Switch ............................... 24
Filigree Panels and Cabinet
Door Frame Installation ............................ 25
Door Installation ............................................. 26
Operating Instructions ................................... 27
What To Do If You Smell Gas ...................... 27
Lighting Pilot for the First Time ................... 27
Lighting Pilot ............................................... 28
Lighting Burner ............................................ 29
To Turn Off Gas ........................................... 29
Adjusting Blower Speed .............................. 29
Air Shutter Adjustment (Natural Gas Only) .. 30
Glass Replacement ........................................ 31
Cleaning Maintenance.................................... 32
Venting System ........................................... 32
Cleaning Glass ............................................ 32
Pilot and Burner Flames ............................. 32
Firebox Cleaning ......................................... 33
Maintaining Your Heater’s Appearance ....... 33
Yearly Service Procedure ............................ 34
Blower.............................................................. 35
Replacement Parts ......................................... 36
Troubleshooting ............................................. 38
Warranty ...........................................Back Cover
Thank you and congratulations on your purchase of a Monessen Fireplace.

57D0016 3
Make certain you read and understand all warnings. Keep this
manual for reference. It is your guide to the safe and proper
operation of this insert.
1. This appliance is only for use with the type of gas indi-
cated on the rating plate. This appliance is not convertible
for use with other gases unless a certified kit is used.
2. For propane/LP insert, do not place propane/LP supply
tank(s) inside any structure. Locate propane/LP supply
tank(s) outdoors. To prevent performance problems, do not
use propane/LP fuel tank of less than 100 lbs. capacity.
3. If you smell gas
• shut off gas supply.
• do not try to light any appliance.
• do not touch any electrical switch; do not use any
phone in your building .
• immediately call your gas supplier from a neighborʼs
phone. Follow the gas supplierʼs instructions.
INSTALLER
Please leave these instructions with the appliance.
OWNER
Please retain these instructions for future reference .
IMPORTANT SAFETY INFORMATION
This insert is a vented product. This insert must be properly
installed by a qualified service person. The glass door must be
properly seated and sealed. If this unit is not properly installed
by a qualified service person with glass door properly seated
and sealed, combustion leakage can occur.
CARBON MONOXIDE POISONING: Early signs of
carbon monoxide poisoning are similar to the flu with head-
aches, dizziness and/or nausea. If you have these signs, the
insert may not have been installed properly. Get fresh air at
once! Have the insert inspected and serviced by a qualified
service person. Some people are more affected by carbon
monoxide than others. These include pregnant women, people
with heart or lung disease or anemia, those under the influence
of alcohol, and those at high altitudes.
Propane/LP gas and natural gas are both odorless. An odor-
making agent is added to each of these gases. The odor helps
you detect a gas leak. However, the odor added to these gases
can fade. Gas may be present even though no odor exists.
Continued on page 4
• Read this owner’s manual carefully and completely before trying to assemble, operate,
or service this insert.
• Any change to this insert or its controls can be dangerous.
• Improper installation or use of this insert can cause serious injury or death from fire,
burns, explosions, electrical shock and carbon monoxide poisoning.
• Improper installation, adjustment, alteration, services or maintenance can cause injury
or property damage. Refer to this manual. For assistance or additional information
consult a qualified installer, service agency or the gas supplier.
• DUE TO HIGH TEMPERATURES, THE APPLIANCE SHOULD BE LOCATED OUT OF
TRAFFIC AND AWAY FROM FURNITURE AND DRAPERIES.
• CHILDREN AND ADULTS SHOULD BE ALERTED TO THE HAZARDS OF HIGH
SURFACE TEMPERATURE AND SHOULD STAY AWAY TO AVOID BURNS OR CLOTHING
IGNITION.
• YOUNG CHILDREN SHOULD BE SUPERVISED WHEN THEY ARE IN THE SAME ROOM
AS THE APPLIANCE.
• CLOTHING OR OTHER FLAMMABLE MATERIAL SHOULD NOT BE PLACED ON OR
NEAR THE APPLIANCE.
• KEEP THE ROOM AREA CLEAR AND FREE FROM COMBUSTIBLE MATERIALS,
GASOLINE, AND OTHER FLAMMABLE VAPORS AND LIQUIDS.
WARNINGS

4 57D0016
IMPORTANT SAFETY INFORMATION
Continued from page 3
4. Never install the insert
• in a recreational vehicle
• where curtains, furniture, clothing, or other flammable
objects are less than 36" from the front, top, or sides
of the insert
• in high traffic areas
• in windy or drafty areas
5. This insert reaches high temperatures. Keep children and
adults away from hot surfaces to avoid burns or clothing
ignition. Insert will remain hot for a time after shutdown.
Allow surfaces to cool before touching.
6. Carefully supervise young children when they are in the
room with insert.
7. Do not modify this insert under any circumstances. Any
parts removed for servicing must be replaced prior to
operating insert.
8. Turn insert off and let cool before servicing, installing, or
repairing. Only a qualified service person should install,
service, or repair the insert. Have burner system inspected
annually by a qualified service person.
9. You must keep control compartments, burners, and cir-
culating air passages clean. More frequent cleaning may
be needed due to excessive lint and dust from carpeting,
bedding material, pet hair, etc. Turn off the gas valve and
pilot light before cleaning insert.
10. Have venting system inspected annually by a qualified
service person. If needed, have venting system cleaned
or repaired. See Cleaning and Maintenance, page 32.
11. Keep the area around your insert clear of combustible
materials, gasoline, and other flammable vapor and liq-
uids. Do not run insert where these are used or stored.
Do not place items such as clothing or decorations on or
around insert.
12. Do not use this insert to cook food or burn paper or other
objects.
13. Never place anything on top of insert.
14. Do not use any solid fuels (wood, coal, paper, cardboard,
etc.) in this insert. Use only the gas type indicated on
rating plate.
15. This appliance, when installed, must be electrically
grounded in accordance with local codes or in the
absence of local codes, with the National Electrical
Code, ANSI/NFPA 70, or the Canadian Electrical Code,
CSA C22.1.
16. Do not obstruct the flow of combustion and ventilation
air in any way. Provide adequate clearances around
air openings into the combustion chamber along with
adequate accessibility clearance for servicing and proper
operation.
17. Do not use insert if any part has been exposed to or
under water. Immediately call a qualified service person
to arrange for replacement of the unit.
18. Do not operate insert if any log is broken.
19. Do not operate the insert with glass door removed,
cracked, or broken.
Never connect unit to private
(non-utility) gas wells. This
gas is commonly known as
wellhead gas.
WARNING
www.nficertified.org
We suggest that our gas hearth
products be installed and
serviced by professionals who
are certified in the U.S. by the
National Fireplace Institute
®
(NFI) as Gas Specialists.

57D0016 5
PRODUCT FEATURES AND CODE APPROVAL
Off/Pilot/On Knob
Optional
Remote
Receiver
Figure 1 - IDV490NVC, IDV490PVC, IDV380NVC, and IDV380PVC Inserts
• This appliance has been
certified for use with either
natural or propane gas. See
appropriate data plates.
• This appliance is not for use
with solid fuels.
• The appliance is approved
for bedroom or bedsitting
room installations.
• The appliance must be
installed in accordance with
local codes if any. If none
exist use the current instal-
lation code. ANSI Z223.1/
NFPA 54 in the USA, CAN/
CGA B149 in Canada.
• The appliance must be prop-
erly connected to a venting
system.
Hi/Lo Knob
PRODUCT SPECIFICATIONS
The efficiency rating of this appliance is a product thermal efficiency rating determined under continuous operating condi-
tions and was determined independently of any installed system.
Thermal Efficiency = up to 80%
CODE APPROVAL
These appliances have been tested by CSA and found to comply with the established standards for VENTED GAS FIRE-
PLACE HEATERS in the USA and Canada as follows:
LISTED VENTED GAS FIREPLACE HEATER
TESTED TO: ANSI Z21.88-2002/CSA 2.33-2002 STANDARDS
On/Off/
Remote Switch
Blower Knob
Gas
Shutoff
Valve
ATTENTION MASSACHUSETTS RESIDENTS:
This product must be installed by a licensed gas fitter.
Piezo Ignitor
On/Off Switch
This appliance may be installed
in an aftermarket*, permanently
located, manufactured
home, where not prohibited
by local codes.
WARNING
* Aftermarket: Completion of sale, not for
purpose of resale, from the manufacturer.

6 57D0016
PRE-INSTALLATION INFORMATION
INSTALLING ABOVE 2000 FEET
• In the USA, the appliance must be derated 4% for every 1,000 ft above 2,000 ft elevations.
• In Canada, these appliances are certified for altitudes of 0 – 2000 ft, and must be de-rated by 10 percent for installations
between 2000 and 4,500 ft. (derate an additional 4% for every 1,000 ft. above 4,500 ft. elevations).
The IDV490NVC, IDV490PVC, IDV380NVC, and 380IDVPVC are equipped with a variable output gas control.
ORIFICE SIZES, PRESSURES AND BTUs
NATURAL GAS PROPANE GAS
Manifold Press: (W.C.) 3.5" Manifold Press: (W.C.) 10"
Maximum Supply Pressure 10.5" Maximum Supply Pressure 13"
Minimum Supply Pressure 4.5" Minimum Supply Pressure 11"
NOTE: IDV490NVC, IDV490PVC, IDV380NVC, and IDV380PVCinserts work without any electrical supply.
Blower must be attached to 110/120 VAC.
INSTALLATION PLANNING
Plan for the installation of your insert. This includes determining the size of fireplace in which unit is to be installed, length of
venting to be used, and finishing details, and whether any optional accessories (i.e. wall switch, or remote control) are desired.
Consult your local building code agency to ensure compliance with local codes, including permits and inspections.
Model Number IDV490NVC IDV490PVC IDV380NVC IDV380PVC
NATURAL PROPANE NATURAL PROPANE
Max. Btu/hr Input 40,000 37,500 30,500 28,000
Min. Btu/hr Input 26,500 29,000 20,500 22,000
Orifice sizes (as shipped) #30 #50 #35 #53

57D0016 7
A
16˝
18˝
21˝
28˝
21˝
Top
Side
A
Front
M
L
A
18˝
20˝
23˝
31˝
23˝
IDV380 Opening IDV490 Opening
Figure 2 - External Insert Dimensions
FIREPLACE AND INSERT DIMENSIONS
INSERTS
IDV490NV/PVC IDV380NV/PVC IDV490NV/PVC IDV380NV/PVC
A243/4" - 629mm 223/4" - 578mm H223/4" - 578mm 203/4" - 527mm
B3311/16" - 856mm 303/16" - 767mm I2313/16" - 605mm 215/8" - 549mm
C311/8" - 791mm 275/8" - 702mm J2415/16" - 633mm 223/4" - 578mm
D1911/16" - 500mm 177/16" - 443mm K185/16" - 465mm 165/16" - 414mm
E111/2" - 292mm 103/8" - 264mm L927/32" - 250mm 823/32" - 221mm
F33" - 838mm 291/2" - 749mm M55/8" - 143mm 41/2" - 114mm
G171/2" - 445mm 159/16" - 395mm

8 57D0016
GENERAL INSTALLATION INFORMATION
The following factors should be taken into consideration:
• This insert should have sufficient access for its safe operation and maintenance.
• The flow of combustion and ventilation air must not be obstructed.
• Minimum clearances to combustibles, such as mantels, must be maintained. See Figures 3 and 4, pages 9 and 10.
• Never obstruct the front opening of the insert.
• Do not install in the vicinity where gasoline or other flammable liquids may be stored.
• These units can be installed in a bedroom. See National Fuel Gas Code ANSI Z233.1/NFPA 54 (current edition), the
Uniform Mechanical Code (current edition), and Local Building Codes for specific installation requirements.
IMPORTANT: Your direct vent insert was designed to be installed in an existing wood burning fireplace.
The location and clearances are subject to local building codes.
INSERT APPLICATIONS
Before installing the gas fireplace insert, consider the functioning needs of the fireplace. Confirm the size of the fireplace
cavity, the design of the chimney, and the availablility of the gas supply and electricity for the insert fan.
IMPORTANT: Your direct vent insert is designed to be only vented vertically with a minimum height of
10 feet.
When the unit is installed into a woodburning fireplace, the minimum distance the mantel can be placed above the fireplace is
governed by local building codes applicable to woodburning fireplaces. Consult local authorities having jurisdiction for these
clearances. The underside of the mantel will become warm. Use only finishes which are heat resistant and do not discolor.
The dimensions shown in Figures 4 and 5, pages 9 and 10, are minimum clearances to
maintain when installing this heater. Follow these instructions carefully to ensure safe
installation. Failure to follow instructions exactly can create a fire hazard.
WARNING
CLEARANCES
MINIMUM FIREPLACE SIZE/CLEARANCES TO COMBUSTIBLES
Maintain the following minimum clearances for service and maintenance. See pages 9 and 10.

57D0016 9
8" (203mm)
INSTALLATION
INSERT CLEARANCES
No combustibles (ie: drapes, doors) may be within, or swing within, 36" of the front of the inset.
MANTEL CLEARANCES
NOTE: The combustible area above the facing must not protrude more than 3/4" from the facing. If it
does, it is considered a mantel and must meet the mantel requirements shown above.
HEARTH REQUIREMENTS
The insert must be installed on a non-combustible hearth extending a minimum of 12" from the fireplace opening (local
codes may require a larger hearth). The hearth must also extend to both sides of the face (see the table on page 7).
Figure 3 - Mantel Clearances

10 57D0016
INSTALLATION
INSERT PLACEMENT
• Insert must be placed within a code-conforming masonry fireplace or a tested and listed zero-clearance (UL-127, solid
fuel) fireplace. Repair any fireplace damage prior to installation.
• Because the insert uses a circulation blower, clean the fireplace, smoke shelf, and chimney before installing.
• This heater may be placed in a bedroom. Please be aware of the large amount of heat this appliance produces when
determining a location.
The gas line
should be installed
prior to insert
placement.
Run the on/off switch wires
to the right — behind the
surround panels
(See Page 24)
Run the power
cord either side of
the insert along
the face.
Use the leveling
bolts for fireplaces
with recessed floors
The insert
protrudes into the fireplace.
See Page 7 for Dimension.
For Minimum Dimension, See Page 7
For tight fits you may remove the manifold.
See “Removing the Mainfold,” page 16.
Figure 4 - Insert Placement
For Minimum Dimension,
See Page 7