Majestic fireplaces NVBC42 Mounting instructions

950
NVB cover 2/1/01
Decorative Gas Appliances
PLEASE READ THIS MANUAL
BEFORE INSTALLING AND USING
APPLIANCE.
IMPORTANT: Read all instructions
and warnings carefully before starting
installation. Failure to follow these in-
structions may result in a possible fire
hazard and will void the warranty.
WARNING: If the information in this
manual is not followed exactly, a fire
or explosion may result causing prop-
erty damage, personal injury or loss of
life.
FOR YOUR SAFETY
Installation and service must be per-
formed by a qualified installer, service
agency, or the gas supplier. Do not
store or use gasoline or other flamma-
ble vapors and liquids in the vicinity of
this or any other appliance.
FOR YOUR SAFETY
If you smell gas:
1. Open windows
2. Do not touch electrical switches.
3. Do not try to light any appliance.
4. Extinguish any open flame.
5. Do not use the phone in your build-
ing.
6. Immediately call your gas supplier
from a neighbor's phone.
7. Follow your gas supplier's instruc-
tions.
8. If you cannot reach your gas sup-
plier, call the fire department.
INSTALLER/CONSUMER
SAFETY INFORMATION
Models: NVBR36, NVBC42
NVBR36, NVBC42
Homeowner's Installation and
Operating Manual
D
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7412950 8/06 Rev. 15
NVBR36
NVBC42
CERTIFIED
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.

2
NVB Series B-Vent Gas Fireplace
7412950
Table of Contents
Thank you and Congratulations on your purchase of a CFM Corporation fireplace.
PLEASE READ THE INSTALLATION & OPERATING INSTRUCTIONS BEFORE USING THE APPLIANCE
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 ..........................................................................................3
General Information .............................................................................................................3
Fireplace Dimensions ..........................................................................................................4
Clearance to Combustibles .................................................................................................6
Mantels ............................................................................................................................... 6
Mantel Chart ........................................................................................................................6
Hearth ...............................................................................................................................6
Insulating for Cold Climates ................................................................................................6
Framing & Finishing ............................................................................................................7
Final Finishing .....................................................................................................................7
Gas Specifications ...............................................................................................................7
Gas Inlet & Manifold Pressures ...........................................................................................7
High Elevations ...................................................................................................................7
Parts Identification and Chase Installation ..........................................................................8
Gas Line Installation ............................................................................................................8
Remote Wall Switch ............................................................................................................9
EB-1 Electrical Box ............................................................................................................10
Install the Venting System, Flashing, and Termination ...................................................... 10
Venting Runs ..................................................................................................................... 11
Operating Instructions
Glass Information ..............................................................................................................12
Glass Cleaning ..................................................................................................................12
Log Installation ..................................................................................................................12
Ember Material Placement ................................................................................................13
Lava Rock .........................................................................................................................13
First Firing .........................................................................................................................13
Flame Adjustment ..............................................................................................................13
Flame Characteristics ........................................................................................................13
Inspecting the Venting System ..........................................................................................13
Lighting & Operating Instructions ......................................................................................14
Troubleshooting .................................................................................................................16
Maintenance .................................................................................................................................18
Replacement Parts ......................................................................................................................19
Optional Accessories ..................................................................................................................21
Warranty .......................................................................................................................................22

3
NVB Series B-Vent Gas Fireplace
7412950
General Information
This gas appliance should be installed by a qualified
installer in accordance with local building codes and with
current CSA-B149.1 Installation codes for Gas Burning
Appliances and Equipment.
FOR U.S.A Installations follow local codes and/or the cur-
rent National Fuel Gas Code. ANSI Z223.1/NFPA 54.
In the Commonwealth of Massachusetts, all gas fittings
and installation of this heater shall only be done by a
licensed gas fitter or licensed plumber.
FOR SAFE INSTALLATION AND OPERATION PLEASE
NOTE THE FOLLOWING:
1. This appliance 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 appliance and should stay
away to avoid burns or ignition of clothing.
3. Children should be carefully supervised when they are in the
same room as your appliance.
4. Under no circumstances should this appliance be modified.
Parts having to be removed for servicing should be replaced
prior to operating this appliance again.
5. Installation and any repairs to this appliance should be car-
ried out by a qualified service person. A professional service
person should be contacted to inspect this appliance an-
nually. Make it a practice to have all of your gas appliances
checked 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 ap-
pliance 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 unit.
7. The venting system (chimney) of this appliance should be
checked at least once a year and if needed your venting
system should be cleaned.
8. Keep the area around your appliance clear of combustible
materials, gasoline and other flammable vapour and liquids.
This appliance should not be used as a drying rack for cloth-
ing, nor should Christmas stockings or decorations be hung
in the area of it.
9. Under no circumstances should any solid fuels (wood, coal,
paper or cardboard etc.) be used in this appliance.
10.The flow of combustion and ventilation air must not be ob-
structed in any way.
11. Whether the appliance is installed directly on carpeting, vinyl
tile or any combustible material other than wood, this appli-
ance must be installed on a metal or wood panel extending
the full width and depth of the appliance.
12. This appliance requires adequate ventilation and combus-
tion air to operate properly.
Description
NVB Series are radiant or heat circulating, natural draft
appliances and use a 6" B-vent system. Do not burn
wood or other materials in these appliances. Each model
is available with standing pilot or electronic ignition for
use with Natural or Propane gas units.
Report to your dealer any parts damaged in shipment.
Adequate combustion and ventilation air must be pro-
vided. The flow of combustion and ventilation air MUST
NOT be obstructed.
Provide adequate clearances around the air opening
into the combustion chamber; and adequate accessibil-
ity clearance for servicing and proper operation. NEVER
obstruct the front opening of the appliance or cover the
top and bottom louvres (grilles).
The 6" vent system MUST connect to the appliance and
terminate out-of-doors in a vertical position and terminate
with a B-vent cap.
This appliance must not be connected to a chimney flue
servicing a separate solid-fuel burning appliance.
A draft hood is an integral part of the appliance.
Proposition 65 Warning: Fuels used in gas, wood-
burning 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
IMPORTANT:
PLEASE READ THE FOLLOWING CAREFULLY
Remove any plastic from trim 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 used in the manu-
facturing 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) continuous 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.
WARNING: Check with your electronics manufac-
turer before installing a television or other electron-
ic device above this fireplace.

4
NVB Series B-Vent Gas Fireplace
7412950
Fig. 1 NVBR36 Series specification and framing dimensions.
NVBR36 Series Gas Appliance
FP561
36"
(914mm)
"
(356mm)
"
(337mm) 40"
(1016mm)
36"
(914mm)
3"
(76mm)
" (16mm)
45" (1162mm)
45" (1162mm)
" (13mm)
"
" (822mm)
" (1645mm)
"
(502mm)
"
(533mm)
40"
(1029mm)
"
(191mm)
"
(165mm)
"
(191mm)
"
(191mm)
Outside
Air
Electrical
Access
Gas Line
Access
WF561
NVBR36
11/11/97
Rough
Opening
Height
"
(16mm)
"
(213mm)
20"
(508mm)
"
(521mm)
" (559mm)
Recessed
Nailing
Flange
6" DIA.
Rough Opening Width 41"
Rough
Opening
Depth
3"
(76mm)
(1041mm)
FP562
Fig. 2 NVBC36 Series specification and framing dimensions.
NVBC36 Series Gas Appliance — Circulating Model
36"
(914mm)
"
(356mm)
"
(337mm) 40" (1016mm)
36"
(914mm)
3"
(76mm)
" (16mm)
45" (1162mm)
45" (1162mm)
" (13mm)
"
" (822mm)
" (1645mm)
" (502mm)
" (533mm)
40"
(1029mm)
35" (902mm)
"
(191mm)
"
(165mm)
"
(191mm)
"
(191mm)
Outside
Air
Electrical
Access
Gas Line
Access
WF562
NVBC36
11/11/97
Rough
Opening
Height
"
(16mm)
"
(213mm)
20"
(508mm)
"
(521mm)
" (559mm)
Recessed
Nailing
Flange
6" DIA.
Rough Opening Width 41"
Rough
Opening
Depth
3"
(76mm)
34" (864mm)
2"
(51mm)
(1041mm)

5
NVB Series B-Vent Gas Fireplace
7412950
NVBR42 Series Gas Appliance
FP563
Fig. 3 NVBR42 Series specification and framing dimensions.
42"
(1067mm)
"
(356mm)
"
(337mm) 46"
(1168mm)
36"
(914mm)
3"
(76mm)
" (16mm)
49" (1245mm)
49" (1245mm)
" (13mm)
"
" (1765mm)
"
(502mm)
"
(533mm)
40"
(1029mm)
"
(191mm)
"
(165mm)
"
(191mm)
"
(191mm)
Outside
Air
Electrical
Access
Gas Line
Access
WF563
NVBR42
11/11/97
Rough
Opening
Height
"
(16mm)
"
(213mm)
20"
(508mm)
"
(521mm)
" (711mm)
Recessed
Nailing
Flange
6" DIA.
Rough Opening Width 47"
Rough
Opening
Depth
3"
(76mm)
35" (895mm)
(1194mm)
FP564
Fig. 4 NVBC42 Series specification and framing dimensions.
NVBC42 Series Gas Appliance — Circulating Model
"
(213mm)
42"
(1067mm)
"
(356mm)
"
(337mm 46" (1168mm)
36"
(914mm)
3"
(76mm)
" (16mm)
49" (1245mm)
49" (1245mm)
" (13mm)
"
" (1765mm)
" (502mm)
" (533mm)
40"
(1029mm)
"
(191mm)
"
(165mm)
"
(191mm)
"
(191mm)
Outside
Air
Electrical
Access
Gas Line
Access
WF564
NVBC42
11/11/97
Rough
Opening
Height
"
(16mm)
20"
(508mm)
38" (965mm)
"
(521mm)
" (711mm)
Recessed
Nailing
Flange
6" DIA.
Rough Opening Width 47"
Rough
Opening
Depth
3"
(76mm)
34" (864mm)
2"
(51mm)
35" (895mm)
(1194mm)

6
NVB Series B-Vent Gas Fireplace
7412950
Clearance to Combustibles
Appliances
Top ..........................................................0” (0 mm)
Bottom .....................................................0” (0 mm)
Side .........................................................0” (0 mm)
Back ........................................................0” (0 mm)
Perpendicular Sidewall ...........................0” (0 mm)
Top of unit to ceiling ..........................36” (914 mm)
Front of unit to combustibles .............36” (914 mm)
Venting
B-Vent ...................................................1” (25 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 5a and 5b
The distances and reference points are not affected by
the fitting of a bay window front trim kit.
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.
J
F
G
H
I
Mantel
Leg
CFM164a
Mantel Leg Chart
06/22/01 sta
CFM170
DV Builder Front
View
O
N
M
L
K
Ref. Mantel Ref. Mantel Leg From
Leg Depth of Comb. Opening
F 14" (356 mm) K 14" (356 mm)
G 12" (305 mm) L 12" (305 mm)
H 10" (254 mm) M 10" (254 mm)
I 8" (203 mm) N 8" (203 mm)
J 1¹⁄₂" (38 mm) O 1¹⁄₂" (38 mm)
Black Sur-
round Face
CFM164
CFM170
Fig. 5b Combustible mantel leg minimum installation.
Side of
Combustion Chamber
Hearth
A hearth is not mandatory but is recommended for
aesthetic purposes. We recommend a noncombustible
hearth.
Insulating For Cold Climates
When an appliance is installed in a chase or an outside
wall, the enclosure should be insulated like any other
wall of the home. Insulation should be installed under
the appliance and on the inside of the exterior walls.
In a chase, it is a good idea to install a firestop at the
first ceiling level above the appliance. Also, install insu-
lation on the side walls. Insulation may then be placed
above the ceiling to assure the space around the appli-
ance is protected. Refer to Page 8, Figure 7.
Ref. Mantel Ref. Mantel From Top
Shelf Depth of Comb. Chamber
V 14" (356 mm) A 18" (457 mm)
W 12" (305 mm) B 16" (406 mm)
X 10" (254 mm) C 14" (356 mm)
Y 8" (203 mm) D 12" (305 mm)
Z 1¹⁄₂" (38 mm) E 8" (203 mm)
CFM146
A B C DE
V
W
X
Y
Z
Fireplace
CFM146
DV Mantel Chart
7/5/01 sta
Top of Combustion
Chamber
Fig. 5a Mantel clearances.
Side View

7
NVB Series B-Vent Gas Fireplace
7412950
Framing and Finishing
Check appliance to make sure it is levelled
and properly positioned.
The appliance should only be mounted on the following sur-
faces:
• A flat combustible (burnable) surface.
• A raised wooden platform.
• A concrete block or other solid object
placed beneath each of the four corners
of the appliance.
To mount the appliance:
1. Choose unit location.
2. Four (4) nailing flanges are supplied with the fireplace
(found on the fireplace hearth). To level the box and secure
it firmly in place, remove the nailing flanges from the hearth
and install at the sides of the fireplace as shown in Figure 6.
FP549
Fig. 6 Adjustable drywall strip (nailing flange).
FP549
9/29/97
BR/BC
Nail Top
Standoffs
Nail Side-
Nailing
Flanges
Finishing
CAUTION: All joints between the finished
wall and the appliance surround (top and
sides) may be sealed only with non-com-
bustible material. Only noncombustible
material can be applied as facing to the ap-
pliance surround (the black painted face).
When finishing the appliance, never obstruct or modify
the air inlet/outlet grilles in any manner.
Finish the wall with the material of your choice. Refer to
Figures 5a and 5b for specific clearances when install-
ing a combustible mantel or other combustible projec-
tion.
Gas Specification
Max. Min.
Model Fuel Gas Control Input Input
NVBR36RN Natural Millivolt Hi/Lo 30,000 21,500
NVBC36RN Natural Millivolt Hi/Lo 30,000 21,500
NVBR36RP Propane Millivolt Hi/Lo 30,000 22,000
NVBC36RP Propane Millivolt Hi/Lo 30,000 22,000
NVBR36EN Natural Electronic Ignition 30,000 21,500
NVBC36EN Natural Electronic Ignition 30,000 21,500
NVBR36EP Propane Electronic Ignition 30,000 22,000
NVBC36EP Propane Electronic Ignition 30,000 22,000
NVBR42RN Natural Millivolt Hi/Lo 30,000 21,500
NVBC42RN Natural Millivolt Hi/Lo 30,000 21,500
NVBR42RP Propane MIllivolt Hi/Lo 30,000 21,500
NVBC42RP Propane Millivolt Hi/Lo 30,000 21,500
NVBR42EN Natural Electronic Ignition 30,000 21,500
NVBC42EN Natural Electronic Ignition 30,000 21,500
NVBR42EP Propane Electronic Ignition 30,000 22,000
NVBC42EP Propane Electronic Ignition 30,000 22,000
Gas Inlet & Manifold Pressures
Natural LP
Minimum Inlet Pressure 5.5” w.c. 11.0” w.c.
Maximum Inlet Pressure 14.0” w.c. 14.0” w.c.
Manifold Pressure 3.5”w.c. 10.0” w.c.
NVBR36 / NVBC36 / NVBC42 / NVBR42
Certified to
ANSI Z21.50b-2002 / CSA 2.22b-2002
Vented 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).
Be sure to always maintain the proper one
(1) inch distance to combustibles around
B-vent pipe sections.
NOTE: Insulating for cold climates is strictly a recom-
mendation and not a requirement.
Units: F34AR0, F34BR0, F34HR0, F34IR0, F34AC0,
F34BC0, F34HC0, F34IC0, G34AR0, G34BR0,
G34HR0, G34IR0, G34AC0, G34BC0, G34HC0,
G34IC0
Air Shutter
Model Gap
NVBR36RN, NVBC36RN, 8 mm
NVBR36EN, NVBC36EN
NVBR42RN, NVBC42RN, 10 mm
NVBR42EN, NVBC42EN
NVBR36RP, NVBC36RP, 2 mm
NVBR36EP, NVBC36EP
NVBR42RP, NVBC42RP, 2 mm
NVBR42EP, NVBC42EP

8
NVB Series B-Vent Gas Fireplace
7412950
WF597
NVC (from FP528)
12/2/97
Parts Identification and Chase Installation
Fig. 7 Parts identification and system installation.
(Insulation methods shown are optional for cold climate,
not a requirement for unit operation.)
FP597
*Do not install header
until unit is in place.
See Page 8, "Mounting
the Appliance."
Gas Line Installation
This appliance must be isolated from the gas supply
piping system by closing its individual manual shut off
valve during any pressure equal to or less than 1/2 psig
(3.45 kPa).
The appliance and its individual shutoff valve must be
disconnected from the gas supply piping system during
any pressure testing of that system at test pressures in
excess of 1/2 psig (3.45 kPa).
If gas piping from the source to the appliance location
has not been accomplished, install the required pipe.
Consult local plumbing code to assure proper pipe size.
The gas pipeline can be brought in through the right
side of the appliance. A knockout is provided to al-
low for the gas pipe installation and testing of any gas
connection. It is most convenient to bring the gas line
in from the right side, as this allows fan installation or
removal without disconnecting the gas line.
NOTE: The gas line connection can be made with 3/8"
copper tubing approved for propane or natural gas, 1/2"
rigid pipe or an approved flex connector, then reduced
to 3/8" to the appliance. Because some municipalities
have some additional local codes, it is always best to
consult your local authority.
Batt Insulation
(cut out around
firestop)
Firestop
Ceiling Level
Nailing Flange
Electrical Access
Outside Air Cover Plate
Termination Cap
Storm Collar
Pan Flashing
Draftstop
Standoff
Surround
Screen
Grate
Firebox

9
NVB Series B-Vent Gas Fireplace
7412950
24 VAC HOT
24 VAC RTN ON-OFF
SWITCH
NOVA SIT 822 VALVE
HONEYWELL S8600 B IGNITION MODULE
120 VAC RTN
40VA
TRANSFORMER
120 VAC HOT
BLACK
BLACK
BLACK
BLACK
BLACK
BLACK
BLACK
WHITE
WHITE
WHITE
WHITE
WHITE
WHITE
WHITE
WHITE
BLACK
FP670
NOVA SIT 822 VALVE WIRING DGRM.

4/30/98
PILOT
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1 5
3 4
GREEN
MV MVPV PV GND
(BURNER) 24V 24V SENSE SPARK
U.S.: Consult the current National Fuel Gas Code,
ANSI Z223.1/NFPA 54.
Canada: CSA - B149.1 installation code.
Test for leaks. Use a 50/50 solution of liquid soap and
water to test for leaks at gas fittings and joints. Apply
water/soap solution with brush only - do not over apply.
NEVER test with an open flame.
The gas control is equipped with a captured screw type
pressure test point, therefore it is not necessary to pro-
vide a 1/8" test point up stream of the control.
When using copper or flex connector use only ap-
proved fittings. Always provide a union so that gas
line can be easily disconnected for burner or fan servic-
ing. See gas specification for pressure details and
ratings. NOTE: If flex connector is used, it must be kept
inside of the appliance. (Fig. 8)
1/2" Gas Supply
1/2" x 3/8" Shut-off Valve
3/8" Union
3/8" Nipple
3/8"
Nipple
GF598
nvb GAS SUPPLY INSTALL
12/4/97
FP598
Fig. 8 Typical gas supply installation.
Remote Wall Switch
1. Thread wire through the electrical knockout located
on side of unit. Do not cut wire or insulation on metal
edges. Ensure that wire is protected. Run the other
end to a conveniently located wall receptacle box.
2. Attach wire to switch and install switch into receptacle
box. Attach cover plate to switch.
3. Connect wiring to gas valve. Refer to Figure 9 or 10.
CAUTION: Do not wire millivolt remote
wall switch for gas appliance to a 120v
power supply.
For lighting instructions, see Page 14.
R Models
HV105
Generic Gas Valve
9/22/99 djt
TPTH TH
TP
Pilot
Thermodisk
On/Off
Switch
Valve
HV105
Fig. 9 Remote switch wiring for R Models.
Fig. 10 Remote switch wiring for E Models
Honeywell Ignition
FP670
Thermodisk

10
NVB Series B-Vent Gas Fireplace
7412950
EB-1 Electrical Box
The fireplace, when installed, must be elec-
trically connected and grounded in accor-
dance 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 commenc-
ing this procedure.
Once the fireplace is secured, complete wiring
the fan kit. Remove knockout in the center of the back
of the EB1 and install listed cable clamps. Feed electri-
cal wire through cable clamp leaving approximately six
(6) inches of wire exposed through the EB1. Secure
cable clamp to the wire.
Attach white wire from power source to one (1) wire of
receptacle and secure with a nut. Attach black wire from
power source to the other wire of the receptacle and
secure with a nut. Be sure nuts are tightened securely.
Secure the EB1 assembly to the inside of the electrical
box coverplate using two (2) screws. Attach the cover
to the face of the EB1 while being careful to position
excess wire completely within the EB1. Attach the cov-
erplate to the fireplace. (Fig. 11)
Fig. 11 Junction box (EB-1) hook-up.
FP580
FP580
INSTA VENT FREE
EB1 JUNCTION BOX
11/18/97
Outside
Electrical Box

Inside
Front Of Unit
Install the Venting System,
Flashing and Termination
See venting installation instructions provided by the B-
Vent manufacturer.
Refer to Pages 4-5, Figures 1-4 to locate chimney cen-
terline dimension from a combustible back wall.
• Minimum vertical chimney height — 12 feet (3.65 m).
• Maximum vertical height — 40 feet (12 m).
• Minimum height with two 90° elbows — 16 feet
(4.06m)
• Elbow requirements allow a maximum of two 90°
elbows or four 45 degree elbows per installation.
(Two 45 degree elbows = One 90° elbow.) See
venting chart for proper elbow offset runs. Use
Table 4 for NVB36/42 installations when not in-
stalling the GSKBB Single Panel Glass Door. Use
Table 5 for NVB36/42 installations when install-
ing the GSKBB Single Panel Glass Door.
For firestop positioning, refer to Figure 12. Only one
(1) firestop required per frame. NOTE: A firestop is not
required at the roof.
Fig. 12 Firestop/draftstop positions.
FP384
FIRESTOP
11/21/96
adapted from IGF53
FP384
Attic Installation
Firestop position when area above ceilign is an attic.
Ceiling Installation
Firestop position when are above ceiling is NOT an attic.
Nails (4)
Firestop Spacer
Joist
(Firestop/draftstop
appearances may vary.
Only one (1) firestop
required per frame.)

11
NVB Series B-Vent Gas Fireplace
7412950
FP567
Fig. 13 Venting configurations.



Venting Runs
















Horizontal Run (in feet)
Vertical Run (in feet)
A
A: Vertical installations up to 40 feet (12m) in
height. Up to a 6 ft. horizontal vent run can be
installed within the vent system using a
maximum of two 90-degree elbows or four
45-degree elbows.
B: Vertical installations up to 40 feet (12m) in
height. Up to a 10 ft. horizontal vent run can be
installed within the vent system using a
maximum of two 45-degree elbows.
B
= Acceptable venting configuration
= Unacceptable venting configuration
FP567a
Fig. 14 Venting configurations when installing 36GSKBB.
40
38
36
34
32
30
28
26
24
22
20
18
16
14
12
10
8
2 4 6 810 12 14 16 18 20
A
FP567a
Venting Run
Graph
8/17/99 djt
Horizontal Run (in feet)
Vertical Run (in feet)
= Acceptable venting configuration
= Unacceptable venting configuration
A: Vertical installation up to 40 feet (12m) in
height. Up to a 16 ft. horizontal vent run
can be installed within the vent system
using a maximum of two 90 degree elbows
or four 45 degree elbows.
B: Vertical installation up to 40 feet (12m) in
height. Up to a 20 ft. horizontal vent run
can be installed within the vent system
using a maximum of two 45 degree elbows.
B

12
NVB Series B-Vent Gas Fireplace
7412950
Operating Instructions
Glass Information
Only glass approved for use in Majestic
Fireplaces products may be used for re-
placement.
• Glass doors are optional. The appliance may be
operated safely without glass doors.
• The use of any non-approved replacement glass will
void all product warranties.
• Bi-fold glass doors MUST BE completely open or
closed while the appliance is in operation.
• Care must be taken to avoid breakage of the glass.
• Under no circumstances should this appliance be
operated with broken glass. Replacement of the
glass as supplied by the manufacturer should be
completed by a licensed qualified service person.
• Replacement glass is available through your
Majestic Fireplaces dealer and should only be
installed by a licensed qualified service person.
Glass Cleaning
It will be necessary to clean the glass periodically.
During start-up, condensation, which is normal, forms
on the inside of the glass and causes lint, dust and
other airborne particles 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
household cleaner and warm water (we recommend
gas fireplace glass cleaner). After that the glass should
be cleaned two or three times during each heating
season depending on the circumstances present.
Clean glass after first two weeks of
operation.
Log Installation
1. Open glass door (if installed).
2. Remove logs from the packaging.
As with all plastic, these bags
are not toys and should always
be kept away from children and
infants.
3. Place left rear log on rear log support.
Ensure that log is firmly positioned and
there is no side-to-side movement. (Figs.
15 & 16)
4. Carefully place Ember Left and Right Logs
between grate and burner. (Figs. 15 & 16)
5. Place the front of right rear log on the
burner and the back of the log on the rear
log support.
6. Place the top logs onto the locator notch-
es. Ensure the logs are secure. (Fig. 15 &
16)
Ember Material Placement
Separate the ember material into small
pieces, roughly 1/2" in diameter and place
on bracket over front burner tube. Do not
pack down; leave in loose, fluffy condition for
most realistic ember effect. (Fig. 15 & 16)
Lava Rock
The lava rock provided with this fireplace
must be placed on the firebox base on either
side of the burner assembly.
LG149
NVB36
logs
2/1/01 djt
Right Cross
Log
Left
Cross
Log
Left Rear
Log
Right Rear
Log
Embers
Ember
Right
Log
(Short)
Lava Rock
Lava Rock
Ember Left
Log (Long)
LG149
Fig. 15 NVB36 log placement.

13
NVB Series B-Vent Gas Fireplace
7412950
LG148
NVB42
log set
1/30/01 djt
Left Rear
Log
Left Cross
Log
Middle Cross
Log
Right Cross
Log
Right Rear
Log
Ember
Left Log
Embers
Grate
Lava Rock
Ember
Right
Fig. 16 NVB42 log placement.
LG148
Under no circumstances should lava rock
be placed on any part of the burner assem-
bly.
First Firing
Upon completing the gas line connection, a small
amount of air will be trapped in the line. When first
lighting the unit with pilot light, it will take a few minutes
to purge the trapped air. Once purging is complete, the
pilot and burner will light and operate as indicated in the
instruction manual. Subsequent lightings of the appli-
ance will not require purging.
When lit for the first time, the appliance will emit a slight
odor for an hour or two. This is due to paint and lubri-
cants used in the manufacturing process. After each
lighting, vapor may condense and fog the glass; this
moisture disappears in a few minutes of burning.
Flame Adjustment
For units equipped with Hi/Lo valves, flame adjustment
is accomplished by rotating the Hi/Lo adjustment knob
located near the center of the gas control.
Flame Characteristics
It is important to periodically perform a visual
check of the pilot and the burner flames.
Compare them to the illustrations below
(Figs. 18, 19, 20). If any of the flames ap-
pear abnormal call a service person.
Inspecting the Venting System
The appliance venting system was designed
and constructed to develop a positive flow
adequate to remove flue gases to the out-
side atmosphere.
Any foreign objects in the venting system,
except those designed specifically for the
venting system, may cause spillage of flue
gases (i.e.: carbon monoxide) into the room.
To inspect the venting system, make sure
the main gas valve is off. Remove the glass
panel. Using a flashlight, check the combus-
tion dome and behind the top grille. Clean if
necessary.
L
O
H
I
Turn
counterclockwise
to increase
flame height
Turn clockwise
to lower
flame height
FP390
FLAME ADJUSTMENT KNOB
11/21/96
Fig. 17 Flame adjustment knob for SIT820 valve.
Fig. 18 Proper pilot flame height.
FP581
3/8"-1/2"
FP581
NVB-PILOTS
12/4/97
NOVA SIT PILOT
ELECTRONIC
IGNITION

14
NVB Series B-Vent Gas Fireplace
7412950
LG151
NVB36
log flames
2/2/01 djt
Red Glow Embers
LG151
Fig. 19 NVB36 flame appearance.
LG150
NVB42
log flames
2/1/01 djt
LG150
Fig. 20 NVB42 flame appearance.

15
NVB Series B-Vent Gas Fireplace
7412950
A. This heater has a pilot which must be lit manu-
ally. 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.
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.
1. STOP! Read the safety information above.
2. Turn OFF all electrical power to the fireplace.
3. For MN/MP/TN/TP appliances ONLY, go on to
Step 4. For RN/RP appliances turn the On/Off
switch to “OFF” position or set thermostat to
lowest level.
4. Open control access panel.
5. Push in gas control knob slightly and turn
clockwise to "OFF".
10. Push the control knob all the way in and hold.
Immediately light the pilot by repeatedly depress-
ing 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.
FOR YOUR SAFETY READ BEFORE LIGHTING
• 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 explo-
sion.
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.
To Turn Off Gas to Heater
Lighting and Operating Instructions
1. Turn the On/Off switch to "OFF" position or set
the thermostat to lowest setting.
2. Turn off all electric power to the fireplace if
service is to be performed.
Lighting Instructions
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 you do not smell gas, go
to the next step.
7. Remove glass door before lighting pilot. (See
Glass Frame Removal section).
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" and call your
service technician or gas supplier.
11. Replace glass door.
12. Turn gas control knob to “ON” position.
13. For RN/RP appliances turn the On/Off switch to
“ON” position or set thermostat to desired setting.
14. Turn on all electrical power to the fireplace.
WARNING:If you do not follow these instructions exactly, a fire or explosion
may result causing property damage, personal injury or loss of life.
Euro SIT SIT NOVA Honeywell




P
I
L
O
T
O
F
F
O
F
F
FP1067
lighting instruction
knobs
3/9/01 djt
5
4
3
2
1
O
F
F
P
i
l
o
t
3/8" - 1/2"
FP1068
Lighting instructions
Pilots

16
NVB Series B-Vent Gas Fireplace
7412950
1/2" Gas Supply
1/2" x 3/8" Shut-off Valve
3/8" Union
3/8" Nipple
3/8"
Nipple
GF598
nvb GAS SUPPLY INSTALL
12/4/97
Lighting and Operating Instructions
For Fireplaces equipped with SIT822 Gas Valve (EN or EP)
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.
FOR YOUR SAFETY READ THE FOLLOWING WARNINGS
BEFORE LIGHTING THE APPLIANCE
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).
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.
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.
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.
Warning: If you do not follow these instructions exactly, a fire or explosion
may result causing property damage, personal injury and loss of life.
Lighting Instructions
Turning Off the Gas to the Appliance
HI
LO
FP297A
Valve in the “ON” position

17
NVB Series B-Vent Gas Fireplace
7412950
Troubleshooting
FP396
Gas Supply On
• Supply Line Hooked up
• Shutoff Valve Open
NO
NO
NO
NO
• Lockout has engaged. Wait 60
seconds and try again.
• Piezo not tight enough for good
ground.
• For spark at electrode while
depressing Piezo (Red Button)
1/8" gap to pilot hood needed.
• All wiring connections
• Replace Piezo Ignitor
• Thermodisk
• For Air in the lines
• Thermopile needs a minimum
325mV. Adjust pilot flame height.
• All wiring connections
• Replace Thermopile
• Thermocouple needs a minimum
of 14mV.
• Defective valve. Turn to pilot,
meter should read greater than
100mV.
• Thermodisk
Pilot Lights with
Piezo Ignitor
YES
YES
YES
YES
Pilot Stays Lit
Pilot Lights Main
Burner
System OK
START
CHECK
• Wall switch is not turned on.
Watch for grounded wires!
• Thermopile needs a minimum
325mV
• Plugged burner orifice
FP396
NVC-standing pilot troubleshooting
5/6/98
Nova SIT 820 Standing Pilot

18
NVB Series B-Vent Gas Fireplace
7412950
FP649
• Turn gas supply off
• Turn ON/OFF Switch
to call for heat.
NO
NO
NO
NO
NO
NO
NO
Spark across
Ignitor Sensor gap
Power to module
(24V nominal)
YES YES
YES
YES
YES
YES
YES
• Turn gas on
Pilot burner lights?
Spark stops when pilot
is lit?
Main Burner lights?
• Replace Module
START
• Line Voltage (120VAC)
• Low Voltage Transformer
(19.5 minimum VAC)
• ON/OFF Switch
• Wiring connections
• Thermodisk
• Check continuity of ignition cable and ground wire.
• Clean flame rod.
• Check electrical connections beween flame rod and module.
• Check for cracked ceramic flame rod insulator.
• Check that pilot flame covers flame rod and is steady blue.
• Adjust pilot flame.
• If problem persists, replace module.
Unplug Ignition Lead
and check spark
at module
(24VAC nominal)
Spark OK?
• Check ignition cable, ground wiring, Ceramic Insulator and gap. Correct as necessary
• Check boot of ignition cable for signs of melting or buckling. Take protective
actions to shield cable and boot from excessive temperatures.
• Check for 24VAC across MV-MV/PV terminals. If no voltage, replace module.
• Check electrical connections between module and gas control. If okay, replace gas
control or gas control operator.
• Check for continuity of igniton cable and ground wire. NOTE: If ground is poor or
erratic, shutdowns may occur occasionally even though operation is normal
at time of checkout.
• Check that the pilot flame covers flame rod and is steady and blue.
• If checks are okay, replace module.
Troubleshooting
Ends
• Check that all manual gas valves are open, supply tubing and pressures are good,
and pilot burner orifice is not blocked.
• Check electrical connections between module and pilot operator on gas control.
• Check for 24VAC across PV-MV/PV terminals on module. If voltage is okay, replace
gas control. If not, replace module.
NOTE: If S8600B goes into lockout, reset system.
NOTE: If S8600B goes into lockout, reset system.
CHECK :
System runs until
ON/OFF switch is in
"OFF" position
FP649 Honeywell S8600B T-shoot Guide 5/5/98
Troubleshooting
Remove glass panel before servicing.
NOVA SIT 822 with Honeywell S8600 B Electronic Ignition

19
NVB Series B-Vent Gas Fireplace
7412950
In order to properly clean the burner and pilot assem-
bly, turn off the gas to the unit, open the glass door
(if used), remove logs exposing the burner and pilot
assembly. Clean all foreign materials from the top of the
burner. Check to make sure that burner parts are clean.
Visually inspect pilot. Brush or blow away any dust or
lint accumulation If pilot orifice is plugged, disassembly
may be required to remove any foreign material from
the orifice or tubing.
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" or 1/2" of the thermopile should
be engulfed in the pilot flame. (Fig. 21)
To adjust pilot burner, turn pilot screw marked "pilot" for
proper flame size.
The air shutter is set at factory no adjustment should be
necessary.
Cleaning Electronic Ignition System
The Electronic Ignition burner/control system consists
of:
• main burner
• gas orifice
• pilot burner
• 24VAC valve with transformer
Taking care of the Electronic Ignition units is almost
identical to taking care of the Standing Pilot models.
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 replace 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.
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.
Contact your local representative to arrange an annual
service program.
Cleaning the Standing Pilot
Control System
The burner and control system consists of:
• main burner
• gas orifice
• pilot burner
• thermopile
• combination millivolt gas valve
Most of these components may require only an occa-
sional checkup and cleaning and some may require ad-
justment. If repair is necessary, it should be performed
by a qualified technician.

20
NVB Series B-Vent Gas Fireplace
7412950
NVB Series
Ref. Description NVB36 NVB42
1. Logs - Complete Set 20003868 20003910
1a. Log - Left Rear 20003862 20003904
1b. Log - Right Rear 20003863 20003905
1c. Log - Right Cross 20003864 20003906
1d. Log - Left Cross 20003865 20003865
1e. Log - Center Cross -- 20003907
1f. Log - Left Ember (Long) 20003866 20003908
1g. Log - Right Ember (Short) 20003867 20003909
2. Lava Rock Package 20000376 20000376
3. Bag of Embers 7060109 7060109
4. Burner Housing w/Tile 20003791 20003953
5. Ceramic Tile (single) 57803 57803
6a. Burner Orifice - Natural (Manifold & Orifice) 20003532 20003547
6b. Burner Orifice - LP (Manifold & Orifice) 20003541 20003552
7. Thermodisk 20001558 20001558
8. Remote Switch Kit 53875 53875
9. Fan ZA1110 ZA1110
10. Door Track - Black 3061102 3062102
950
NVB/C
replacement parts
16
6a/b
9
20
24
19a/b
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THTP TP TH
22
25
21a/b
27
26
23a/b
8
11
14 15
10
3
28a/b
32
31
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

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
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

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MV MVPV PV GND
(BURNER) 24V 24V SENSE SPARK
7
18
2
ab
1. NVB36 Logs
dc
f
g
1. NVB42 Logs
c
d
g
a
b
f
e
4
5
12
13
17
29a/b 30
33
34
37
950
CFM Corporation reserves the right to make changes in design, materials, specifications, prices and discontinue colors and products at any time,
without notice.