Monessen Hearth CDV7 User manual











     
    


        


 
  
  

  
     

  

 
      

   


    








       

        





     








      

    

69D3011 8/10 Rev. 8
Installation and Operating
Instructions




693011
CDVRT7 cover



CDVSC7 & CDV7 Series Gas Fireplace
69D3011

 
 
 
High Elevations ...................................................... 6
Gas Pressures ....................................................... 6
Gas Specifications, Orifice Sizes ........................... 6
Fireplace & Framing Dimensions ........................... 7

Before You Start ..................................................... 9
Fireplace Framing ................................................. 9
Fireplace Location ................................................ 10

 
Finishing Material ................................................. 1
 
General Venting
Termination Location ..................................... 13
Termination Clearances ................................. 15
Assembling Vent Pipes .................................. 15
Rear Vent Installation Only ............................ 16
How to Use the Vent Graph ........................... 17
Vent Pipe Clearances .................................... 18
Rear Vent Applications & Installation ................... 19
Top Vent Sidewall Applications & Installation ....... 0
Vertical Sidewall Applications & Installation ......... 
Below Grade Installation ...................................... 4
Vertical Through-the-Roof
Applications & Installation .............................. 5
 
Check Gas Type................................................... 7
Gas Pipe Installation ............................................ 8
 
 
  
Remote Wall Mounted Switch .............................. 30
Remote Wall Switch ............................................. 30
Optional DC Remote Systems ............................. 30
Electronic Pilot Ignition Wiring ............................. 31
Optional Fan/Blower Systems .............................. 31
 
What To Do If You Smell Gas ............................... 3
Lighting Pilot for the First Time ............................ 3
Lighting Pilot ........................................................ 33
Lighting Burner ..................................................... 34
To Turn Off Gas .................................................... 34
 
What To Do If You Smell Gas ............................... 35
Lighting Electronic Ignition ................................... 35
To Turn Off Gas .................................................... 35

 
Electrical Wiring ................................................... 36
Junction Box Wiring ............................................. 37
Command Center Wall Installation ....................... 37
Wall Switch Installation ........................................ 37
Signature Command System Wiring Diagram ..... 38
 
BLOTSC Wiring Diagram ..................................... 39
BLOT Automotic Thermostat Blower .................... 40
FK-1 Manual Blower .......................................... 40
 
What To Do If You Smell Gas ............................... 41
Operating Instructions .......................................... 4
To Turn Off Gas .................................................... 4
 
Operation Instructions .......................................... 43
 
 
Rockwool Placement ........................................... 46
Log Placement ..................................................... 47
Lava Rock and Ember Placement ....................... 47
 
Burner, Pilot and Control Compartment ............... 48
Pilot Flame ........................................................... 48
Burner Flame ....................................................... 48
Vent System ......................................................... 49
Glass Door ........................................................... 49
Logs ..................................................................... 49
Rock Wool ........................................................... 49
 
 
Firebox Components ............................................ 54
Standing Pilot - Millivolt Control ........................... 56
Electronic Ignition ................................................. 58
Signature Command System ............................... 59
Logs ..................................................................... 61
Venting Components ............................................ 6
 
 
 
 




CDVSC7 & CDV7 Series Gas Fireplace
69D3011 3
4. Never install the fireplace
• in a recreational vehicle
• where curtains, furniture, clothing, or other flam-
mable objects are less than 4" from the front, top,
or sides of the fireplace
• in high traffic areas
• in windy or drafty areas
5. This fireplace reaches high temperatures. Keep children
and adults away from hot surfaces to avoid burns or
clothing ignition. Fireplace will remain hot for a time after
shutdown. Allow surfaces to cool before touching.
6. Young children should be carefully supervised when
they are in the same room as the appliance. Toddlers,
young children and others may be susceptible to acci-
dental contact burns. A physical barrier is recommended
if there are at risk individuals in the house. To restrict
access to a fireplace or stove, install an adjustable
safety gate to keep toddlers, young children and other
at risk individuals out of the room and away from hot
surfaces.
7. Do not modify fireplace under any circumstances. Any
parts removed for servicing must be replaced prior to
operating fireplace.
8. Turn fireplace off and let cool before servicing, install-
ing, or repairing. Only a qualified service person should
install, service, or repair the fireplace. Have burner
system inspected annually by a qualified service
person.
9. You must keep control compartments, burners, and
circulating air passages clean. More frequent cleaning
may be needed due to excessive lint and dust. Turn off
the gas valve and pilot light before cleaning fireplace.
10. Have venting system inspected annually by a quali-
fied service person. If needed, have venting system
cleaned or repaired. See Cleaning and Maintenance,
Page 48.
11. Keep the area around your fireplace clear of combus-
tible materials, gasoline, and other flammable vapor and
liquids. Do not run fireplace where these are used or
stored. Do not place items such as clothing or decora-
tions on or around fireplace.

This fireplace is a vented product. This fireplace 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.
   Early signs of
carbon monoxide poisoning are similar to the flu with
headaches, dizziness and/or nausea. If you have these
signs, the fireplace may not have been installed properly.
Get fresh air at once! Have the fireplace 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 dis-
ease 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.
Make certain you read and understand all warnings. Keep
this manual for reference. It is your guide to safe and
proper operation of this fireplace.
1. 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.
. For propane/LP fireplace, 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 neigh-
bor’s phone. Follow the gas supplier’s instruc-
tions.
Continued on page 4

Please leave these instructions with the appliance.

Please retain these instructions for future reference .
 

 
 



CDVSC7 & CDV7 Series Gas Fireplace
469D3011

1. Do not use this fireplace to cook food or burn paper or
other objects.
13. Never place anything on top of fireplace.
14. Do not use any solid fuels (wood, coal, paper, card-
board, etc.) in this fireplace. 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. When the appliance is installed directly on carpeting,
tile or other combustible material other than wood
flooring, you must set appliance on a metal or wood
panel or hearth pad extending the full width and depth
of the appliance.
18. Do not use fireplace if any part has been exposed to
or has been under water. Immediately call a quali-
fied service person to arrange for replacement of the
unit.
19. Do not operate fireplace if any log is broken.
0. Do not use a blower insert, heat exchanger insert, or
any other accessory not approved for use with this
fireplace.
1. Do not operate the fireplace with glass door removed,
cracked, or broken.

Direct Vent type appliances draw all combustion air from
outside of the dwelling through the vent pipe.
These appliances have been tested by CSA and found to
comply with the established standards for DIRECT VENT
GAS FIREPLACE HEATERS in the USA and Canada as
follows:

TESTED TO:
ANSI Z1.88-009 / CSA .33-009 STANDARDS
A manufactured home (USA only) or mobile home OEM
installation must conform with the 
 
 or when such a standard is not applicable, the

, or 
.


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 gas fireplace to give off some
odor the first time it is burned. This is due to the
manufacturing process.



It is recommended that you burn your fireplace
for at least ten (10) hours the first time you use it.
Place the fan switch in the “OFF” position during
this time.




WARNING
!
HOT GLASS WILL
CAUSE BURNS.
DO NOT TOUCH GLASS
UNTIL COOLED.
NEVER ALLOW CHILDREN
TO TOUCH GLASS.

CDVSC7 & CDV7 Series Gas Fireplace
69D3011 5


• 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 installation
code. ANSI Z3.1/NFPA 54 in the USA, CSA B149 in
Canada.
• This appliance is mobile home approved.
• The appliance must be properly connected to a venting
system.
• The appliance is not approved for closet installations.
• This appliance is approved to be vented with Simpson-
Duravent and MHSC Twist-Lock Direct Vent Compo-
nents.
FP2284a
CDV7 controls
Off/Pilot/On Knob
Remote Control
Switch Receiver
Figure 1 -
CDV7 Series Fireplace
Hi/Lo Knob
Blower
Control
On/Off/RS
Switch
Ignitor
FP84
The classification “noncombustible material” includes, but
is not limited to stone, brick and mortar. Noncombustibles
are safe to overlay the black-painted metal face (includ-
ing radiant plates) and do not pose a fire hazard. Do not
allow any noncombustible finish material to extend past or
interfere with fireplace opening.
The classification “combustible material” includes, but is not
limited to plywood, drywall and particle board. Combustible
materials may contact the sides, bottom or back of firebox.
Do not overlay the black painted face with combustible
materials.

CDVSC7 & CDV7 Series Gas Fireplace
669D3011


Input ratings are shown in BTU per hour and are certified
without deration for elevations up to 4,500 feet (1,370
m) above sea level.
For elevations above 4,500 feet (1,370 m) in USA,
installations must be in accordance with the current
ANSI Z3.1/NFPA 54 and/or local codes having juris-
diction.
In Canada, please consult provincial and/or local authori-
ties having jurisdiction for installations at elevations
above 4,500 feet (1,370 m).


Max.Input Min. Input Orifice
Model Fuel BTU/h BTU/h Size
CDVR33NV7 Nat. 18,000 13,000 #45
CDVR33PV7 LP 18,000 13,000 1.8 mm
CDVR33NE7 Nat. 18,000 13,000 #45
CDVR33PE7 LP 18,000 13,000 1.8 mm
CDVR33NSC7 Nat. 18,000 13,000 #45
CDVR33PSC7 LP 17,000 14,000 1.5 mm
CDVR36NV7 Nat. 0,000 15,000 #44
CDVR36PV7 LP 0,000 15,000 1.35 mm
CDVR36NE7 Nat. 0,000 15,000 #44
CDVR36PE7 LP 0,000 15,000 1.35 mm
CDVR36NSC7 Nat. 0,000 15,000 #44
CDVR36PSC7 LP 0,000 15,000 1.35 mm
CDVR4NV7 Nat. 4,000 17,000 .35 mm
CDVR4PV7 LP 4,000 18,000 1.45 mm
CDVR4NE7 Nat. 4,000 17,000 .35 mm
CDVR4PE7 LP 4,000 18,000 1.45 mm
CDVR4NSC7 Nat. 4,000 17,000 .35 mm
CDVR4PSC7 LP 4,000 18,000 1.45 mm
CDVR47NV7 Nat. 4,000 17,000 .35 mm
CDVR47PV7 LP 4,000 18,000 1.45 mm
CDVR47NE7 Nat. 4,000 17,000 .35 mm
CDVR47PE7 LP 4,000 18,000 1.45 mm
CDVR47NSC7 Nat. 4,000 17,000 .35 mm
CDVR47PSC7 LP 4,000 18,000 1.45 mm
Natural Propane (LP)
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.



Max.Input Min. Input Orifice
Model Fuel BTU/h BTU/h Size
CDVT33NV7 Nat. 18,000 13,000 #45
CDVT33PV7 LP 18,000 13,000 1.8 mm
CDVT33NE7 Nat. 18,000 13,000 #45
CDVT33PE7 LP 18,000 13,000 1.8 mm
CDVT33NSC7 Nat. 18,000 13,000 #45
CDVT33PSC7 LP 18,000 13,000 1.8 mm
CDVT36NV7 Nat. 0,000 15,000 #44
CDVT36PV7 LP 0,000 15,000 1.35 mm
CDVT36NE7 Nat. 0,000 15,000 #44
CDVT36PE7 LP 0,000 15,000 1.35 mm
CDVT36NSC7 Nat. 0,000 15,000 #44
CDVT36PSC7 LP 0,000 15,000 1.35 mm
CDVT4NV7 Nat. 4,000 17,000 .35 mm
CDVT4PV7 LP 4,000 18,000 1.45 mm
CDVT4NE7 Nat. 4,000 17,000 .35 mm
CDVT4PE7 LP 4,000 18,000 1.45 mm
CDVT4NSC7 Nat. 4,000 17,000 .35 mm
CDVT4PSC7 LP 4,000 18,000 1.45 mm
CDVT47NV7 Nat. 4,000 17,000 .35 mm
CDVT47PV7 LP 4,000 18,000 1.45 mm
CDVT47NE7 Nat. 4,000 17,000 .35 mm
CDVT47PE7 LP 4,000 18,000 1.45 mm
CDVT47NSC7 Nat. 4,000 17,000 .35 mm
CDVT47PSC7 LP 4,000 18,000 1.45 mm

CDVSC7 & CDV7 Series Gas Fireplace
69D3011 7
Figure 2 -
CDVR Series Fireplace Dimensions

G
F
H
A
J
C
Q
D
E
156M”
15/16”
P - Minimum Rough Opening Width
Minimum Rough
Opening
Depth
1/2” 5/8”
5/8”
1/2”
Minimum Rough
Opening
Height
C
L
5/8”
1/2”
5/8”
1/2”
IK
L
M
O
M
N
B
693011
CDVR7 DIMS
    
A 33C\," (848 mm) 33" (838 mm) 37Z\zn" (941 mm) 41" (1041 mm) 47" (1194 mm)
B n/a 35B\," (905 mm) 38B\," (981 mm) 38B\," (981 mm) 38B\," (981 mm)
C 31M\," (810 mm) 31ZZ\zn" (805 mm) 34>\zn" (878 mm) 34>\zn" (878 mm) 34>\zn" (878 mm)
D 7C\zn" (691 mm) 7C\zn" (691 mm) 9Z\zn" (338 mm) 33Z\zn" (840 mm) 39Z\zn" (99 mm)
E 15C\zn" (386 mm) 15C\zn" (386 mm) 0C\," (518 mm) 0C\," (518 mm) 0C\," (518 mm)
F 11Z\x" (9 mm) 14C\zn" (360 mm) 15C\v" (400 mm) 15C\v" (400 mm) 15C\v" (400 mm)
G 1Z\x" (546 mm) 1C\," (546 mm) 1M\," (556 mm) 5M\," (657 mm) 31M\," (810 mm)
H 1ZB\zn" (557 mm) 1ZB\zn" (557 mm) 5Z\v" (641 mm) 5Z\v" (641 mm) 5Z\v" (641 mm)
I 9M\," (759 mm) 9M\," (759 mm) 3" (813 mm) 36" (914 mm) 4" (1067 mm)
J B\zn" (59 mm) B\zn" (59 mm) C\," (60 mm) C\," (60 mm) C\," (60 mm)
K 7C\zn" (183 mm) 7C\zn" (183 mm) 5M\zn" (138 mm) 5M\zn" (138 mm) 5M\zn" (138 mm)

L 51" (195 mm) 48C\v" (138 mm) 5M\zn" (133 mm) 56M\zn" (1434 mm) 6M\zn" (1586 mm)
M 36" (914 mm) 34Z\x" (876 mm) 37Z\zn" (941 mm) 40" (1016 mm) 44Z\," (111 mm)
N 5Z\x" (648 mm) 4C\," (619 mm) 6Z\v" (667 mm) 8Z\v" (718 mm) 31Z\v" (794 mm)
O 11" (79 mm) 13ZZ\zn" (347 mm) 15Z\v" (387 mm) 15Z\v" (387 mm) 15Z\v" (387 mm)
P 33B\," (854 mm) 33Z\v" (845 mm) 37Z\x" (953 mm) 41Z\v" (1048 mm) 47Z\v" (100 mm)
Q 3Z\v" (819 mm) 35M\," (911 mm) 39" (991 mm) 39" (991 mm) 39" (991 mm)
 Model CDVR33SC7 has no standoffs on
top of unit.

CDVSC7 & CDV7 Series Gas Fireplace
869D3011

G
F
H
A
J
C
R
D
E
156M”
15/16”
Q - Minimum Rough Opening Width
P
Minimum Rough
Opening
Depth
1/2” 5/8”
5/8”
1/2”
Minimum Rough
Opening
Height
5/8”
1/2”
5/8”
1/2”
I
K
L
M
O
N
N
B
693011
CDVT7 top dims
Figure 3 -
CDVT Series Fireplace Dimensions
   
A 33" (38 mm) 37Z\zn" (941 mm) 41" (1041 mm) 47" (1194 mm)
B 35B\," (905 mm) 38B\," (981 mm) 38B\," (981 mm) 38B\," (981 mm)
C 31ZZ\zn" (805 mm) 34>\zn" (878 mm) 34>\zn" (878 mm) 34>\zn" (878 mm)
D 7C\zn" (691 mm) 9Z\zn" (338 mm) 33Z\zn" (840 mm) 39Z\zn" (99 mm)
E 15C\zn" (386 mm) 0C\," (518 mm) 0C\," (518 mm) 0C\," (518 mm)
F 14C\zn" (360 mm) 15C\v" (400 mm) 15C\v" (400 mm) 15C\v" (400 mm)
G 1C\," (546 mm) 1M\," (556 mm) 5M\," (657 mm) 31M\," (810 mm)
H 10ZZ\zn" (7 mm) 10ZB\zn" (78 mm) 1ZB\zn" (39 mm) 15ZB\zn" (405 mm)
I 6Z\x" (165 mm) 6Z\x" (165 mm) 6Z\x" (165 mm) 6Z\x" (165 mm)
J 9M\," (759 mm) 3" (813 mm) 36" (914 mm) 4" (1067 mm)
K B\zn" (59 mm) C\," (60 mm) C\," (60 mm) C\," (60 mm)
L 7C\zn" (183 mm) 5M\zn" (138 mm) 5M\zn" (138 mm) 5M\zn" (138 mm)

M 48C\v" (138 mm) 5M\zn" (133 mm) 56M\zn" (1434 mm) 6M\zn" (1586 mm)
N 34Z\x" (876 mm) 37Z\zn" (941 mm) 40" (1016 mm) 44Z\," (111 mm)
O 4C\," (619 mm) 6Z\v" (667 mm) 8Z\v" (718 mm) 31Z\v" (794 mm)
P 13ZZ\zn" (347 mm) 15Z\v" (387 mm) 15Z\v" (387 mm) 15Z\v" (387 mm)
Q 33Z\v" (845 mm) 37Z\x" (953 mm) 41Z\v" (1048 mm) 47Z\v" (100 mm)
R 35M\," (911 mm) 39" (991 mm) 39" (991 mm) 39" (991 mm)

CDVSC7 & CDV7 Series Gas Fireplace
69D3011 9


Read this homeowner manual thoroughly and follow all
instructions carefully. Inspect all contents for shipping
damage and immediately inform your dealer if any damage
is found. Do not install any unit with damaged, incomplete,
or substitute parts. Check your packing list to verify that
all listed parts have been received. You should have the
following:
• Fireplace (Firebox and Burner System)
• Log Set
• Volcanic Rock
• Rock Wool

 
• Phillips Screwdriver • Framing Materials
• Hammer • Wall Finishing Materials
• Saw and/or saber saw • Level
• Electric Drill and Bits • Tee Joint
• Pliers • Measuring Tape
• Square • Pipe Wrench
• Caulking Material (Noncombustible)
• Fireplace Surround Material (Noncombustible)
• Piping Complying with Local Codes
• Pipe Sealant Approved for use with Propane/LPG
(Resistant to Sulfur Compounds)

Firebox framing can be built before or after the appliance
is set in place. Construct firebox framing following Figure 2
for your specific installation requirements. Refer to Figure
2 for firebox dimensions. The framing headers may rest
on the top of the firebox standoffs.


The firebox may be installed directly on a combustible floor
or raised on a platform of an appropriate height. When
the firebox is installed directly on carpeting, tile, or other
combustible material, other than wood flooring, the firebox
shall be installed on a metal or wood panel extending the
full width and depth of the enclosure.

      
     


Firebox framing can be built before or after the appliance
is set in place. Construct firebox framing following Figure 3
for your specific installation requirements. Refer to Figure
3 for firebox dimensions. The framing headers may rest
on the top of the firebox standoffs.

The firebox may be installed directly on a combustible floor
or raised on a platform of an appropriate height. When
the firebox is installed directly on carpeting, tile, or other
combustible material, other than wood flooring, the firebox
shall be installed on a metal or wood panel extending the
full width and depth of the enclosure.








CDVSC7 & CDV7 Series Gas Fireplace
10 69D3011

Plan for the installation of your appliance. This includes determining where the unit is to be installed,
the vent configuration to be used, framing and finishing details, and whether any optional accessories
(i.e. blower, wall switch, or remote control) are desired. Consult your local building code agency to
ensure compliance with local codes, including permits and inspections.
The following factors should be taken into consideration:
• Clearance to side-wall, ceiling, woodwork, and windows. Minimum clearances to combustibles

• This fireplace may be installed along a wall, across a corner, or use an exterior chase. Refer to
Figure 4 for suggested locations.
• Location should be out of high traffic areas and away from furniture and draperies due to heat
from appliance.
• Never obstruct the front opening of the fireplace.
• Do install in the vicinity where gasoline or other flammable liquids may be stored.
• Vent pipe routing. See Venting section found in this manual for allowable venting configura-
tions.
• These units can be installed in a bedroom. See National Fuel Gas Code ANSI Z33.1/NFPA 54
— (current edition), the Uniform Mechanical Code — (current edition), and Local Building Codes
for specific installation requirements.

Figure 4 -
Locating Gas Fireplace
** Island (C) and room divider (D) installation is possible as long
as the horizontal portion of vent system (X) does not exceed
0'.
* When you install your fireplace in (D) room divider or (E)
flat on wall corner positions (Y), a minimum of 4" clearance
must be maintained from perpendicular wall and front of
fireplace.
Y
EAB
C
D
F
YB
X
LU584-1
Locating unit
2/4/99 djt
A Flat on Wall
B Cross Corner
C Island**
D Room Divider*
E Flat on Wall Corner*
F Chase Installation
Y 4" Minimum