B-VENT DECORATIVE GAS FIREPLACE
OWNER’S OPERATION AND INSTALLATION MANUAL
O-TL REPORT # 114-F-16-4
Natural Gas models m36(b,h), m42(b,h), VM36(B,H) and VM42(B,H)
Propane/LP Gas models m36P(b,h), m42P(b,h), VM36P(B,H) and VM42P(B,H)
WARNING: If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, personal injury or death.
FOR YOUR SAFETY
—Do not store or use gasoline or any other flammable vapors or 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.
•Immediatelycallyourgassupplierfromaneighbor’s phone. Follow the gas supplier’s instructions.
•If you cannot reach your gas supplier, call the fire department.
—Installationandservicemustbeperformedbyaqualified installer, service agency or the gas supplier.
INSTALLER: Leave this manual with the appliance. CONSUMER: Retain this manual for future reference.
For more information, visit www.desatech.com
WARNING: Improper installation, adjustment, alteration, service or maintenance can cause injury or property damage. Refer to this manual for correct installation and operational procedures. For assistance or additional information consult a qualified installer, service agency or the gas supplier.
NOT FOR USE WITH SOLID FUEL
CHECK LOCAL CODES PRIOR TO INSTALLATION
SAVE THIS BOOK
This book is valuable. In addition to instructing you on how to install and maintain your appliance, it also contains information that will enable you to obtain replacement parts or optional accessory items when needed. Keep it with your other important papers.
This appliance may be installed in an aftermarket*, permanently located, manufactured (mobile) home, where not prohibited by state or local codes.
This appliance is only for use with the type of gas indicated on the rating plate.
This appliance is not convertible for use with other gases, unless a certified kit is used.
*Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer.
State of Massachusetts: The installation must be made byalicensedplumberorgasfitterintheCommonwealth of Massachusetts.
TABLE OF CONTENTS
Safety................................................................... |
3 |
Cleaning and Maintenance. |
............................... 21 |
Unpacking............................................................ |
4 |
Wiring Diagram.................................................. |
22 |
Introduction.......................................................... |
4 |
Replacement Parts............................................. |
22 |
Selecting Location................................................ |
5 |
Service Hints...................................................... |
22 |
Product Specifications.......................................... |
6 |
Technical Service............................................... |
22 |
Pre-Installation Preparation.................................. |
7 |
Troubleshooting................................................. |
23 |
Venting Installation............................................... |
9 |
Parts................................................................... |
26 |
Installation........................................................... |
11 |
Accessories........................................................ |
31 |
Operation........................................................... |
19 |
Warranty............................................... |
Back Cover |
Inspecting Burners ............................................ |
20 |
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108795-01V |
WARNING:Thisproductcontainsand/orgenerateschemicals known to the State of California to cause cancer or birth defects or other reproductive harm.
IMPORTANT: Read this owner’s manualcarefullyandcompletely before trying to assemble, operate or service this fireplace. Improper use of this fireplace cancauseseriousinjuryordeath from burns, fire, explosions, electrical shock and carbon monoxide poisoning.
DANGER:Carbonmonoxide
poisoning may lead to death!
Thisfireplaceisaventedproduct.Thisfireplace willnotproduceanygasleakageintoyourhome if properly installed. This fireplace must be properly installed by a qualified service person. If this unit is not properly installed by a qualified service person, gas leakage can occur.
Carbon Monoxide Poisoning: Early signs of carbon monoxide poisoning resemble the flu, with headaches, dizziness or nausea. If you have these signs, the fireplace may not have been installed properly. Get fresh air at once! Have fireplace inspected and serviced by a qualifiedserviceperson.Somepeoplearemore affectedbycarbonmonoxidethanothers.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.
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.
WARNING: Any change to this fireplace or its controls can be dangerous.
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.
2.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/LPfuel 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 neighbor’s phone. Follow the gas supplier's instructions
•if you cannot reach you gas supplier, call the fire department.
4.Never install the fireplace
•in a recreational vehicle
•where curtains, furniture, clothing or other flammable objects are less than 42" from front, top or sides of 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.Carefully supervise young children when they are in the room with fireplace.
7.Ahearth extension is not required with this appliance. If one is installed, it is for aesthetic purposes only and does not have to meet the standard requirements.
8.Turn fireplace off and let cool before servicing or repairing. Only a qualified service person should install, service or repair this fireplace. Have fireplace inspected annually by a qualified service person.
9.You must keep control compartments, burners and circulating air passages clean. Morefrequentcleaningmaybeneededdue to excessive lint and dust from carpeting, beddingmaterial,etc.Turnoffthegasvalve and pilot light before cleaning fireplace.
10.Haveventingsysteminspectedannuallyby a qualified service person. If needed, have venting system cleaned or repaired. See
Cleaning and Maintenance, page 21.
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3 |
Safety
Continued
11.Keep the area around your fireplace clear of combustible 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 decorations on or around fireplace.
12.Do not use this fireplace to cook food or burn paper or other objects.
13.Do not use any solid fuels (wood, coal, paper, cardboard, etc.) in this fireplace. Use only the gas type indicated on fireplace nameplate.
14.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.
15.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.
16.Do not install fireplace directly on carpeting, vinyl tile or any combustible material other than wood. The fireplace must set on a metal or wood panel extending the full width and depth of the fireplace.
17.Do not use fireplace 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 fireplace if any log is broken.
19.Do not use a blower insert, heat exchanger insert or other accessory not approved for use with this fireplace.
20.Provide adequate clearances around air openings.
The following items are packed inside the firebox. Remove before positioning firebox into framing.
•Transition Collar - For vent connection
•Ceramic Log Pack - Shrink-wrapped on cardboard
•Three (3) plastic bags containing lava rock, pan and ember materials
•Rear Log - Remove the two plastic quick ties from around the burner and grate
•Grate Stand - Lift off of burner pan
Check all items for any shipping damage. If damaged, promptly inform dealer or distributor where you bought the product.
Safely retain these items for later installation.
Models M36(P)(B,H), VM36(P)(B,H), M42(P)(B,H) and VM42(P)(B,H) are vented gas fireplaces that use a millivolt gas control valve with a millivolt ignition system. A 6" B- Type venting system and a listed type vent cap are not supplied but are required for proper operation. See venting instructions on pages
9 and 10.
WARNING: This gas appliance must not be connected to a chimney flue servicing a solid fuel burning appliance.
BEFORE YOU BEGIN
Before beginning the installation of your appliance, read these instructions through completely.
This DESA Heating, LLC appliance and its approved components are safe when installed according to this installation manual and are operated as recommended by DESAHeating, LLC. Unless you use DESAHeating, LLC approved components tested for this appliance,
YOU MAY CAUSE A FIRE HAZARD!
The DESA Heating, LLC warranty will be voided by and DESA Heating, LLC disclaims any responsibility for the following actions :
A)Modification of the appliance or any of the components.
B)Use of any component part not approved by DESA Heating, LLC in combination with this appliance.
C)Installation and/or operation in a manner other than instructed in this manual.
D)Burning of anything other than the type of gas approved for use in this gas appliance.
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108795-01V |
Introduction
Continued
The installation must conform with local codes or, in the absence of local codes, with the current National Fuel Gas Code, ANSI Z223.1/ NFPA 54. This appliance complies with ANSI Z21.50/CSA 2.22.
WARNING: Installation of this appliance should be done by a qualified service person well trained in the installation of such appliances. You will alsoneedabuildingpermitfrom your local Building and Safety
Commissioner before installing this appliance; otherwise your insuranceco.maynotcoverthis appliance.
NOTICE: This appliance is not intendedtobeusedasaprimary source of heat.
CAUTION: Do not connect appliance before pressure testing gas piping. Damage to gas valve may result and an unsafe condition may be caused.
The appliance and it’s individual shutoff valve must be disconnected from gas supply piping system during any pressure testing of that system at test pressures in excess of 1/2 psig (3.5 kPa).
The appliance must be isolated from the gas supply piping system by closing its individual manualshutoffvalveduringanypressuretesting ofthegassupplypipingsystemattestpressures equal to or less than 1/2 psig (3.5 kPa).
For the purpose of input adjustment two pressure taps (for IN and OUT pressures) are provided on the gas control valve for test gauge connections to the appliance.
To determine the safest and most efficient location for your appliance, you must take into consideration the following guidelines:
1.The location must allow for proper clearances (see Clearances, page 7).
2.Consider a location where heat output would not be affected by drafts, air conditioning ducts, windows or doors.
3.A location that avoids the cutting of joists or roof rafters will make installation easier. Figure 1 shows a plan view of a few common locations.
CORNER
INTERNAL WALL INSTALLATION
INSTALLATION
FLUSH
FULL INSTALLATION
PROJECTION
INSTALLATION
Flush installations are recommended where living space is limited or at a premium and since the space required to enclose the appliance would be located beyond an outside wall, this would also reduce the cutting of joists, roof rafters and such. Check local codes for any restrictions.
Projected installations can extend any distance into the room. A projection may be ideal for a new addition on an existing, finished wall.
Corner installations make use of space that may not normally be used and provides a wider and more efficient range for radiant heat transference.
Internal wall installations provide a discreet option for room separation and can also be ideal as an addition to an existing wall.
Figure 1 - Possible Locations for Installing Appliance
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5 |
Product Specifications |
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GAS RATING - NATURAL |
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M36(B,H), VM36(B,H) |
M42(B,H), VM42(B,H) |
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Max. Input Rating: |
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40,000 Btu/Hr |
45,000 Btu/Hr |
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Manifold Pressure: |
3.5" WC (.87 kPa) |
3.5" WC (.87 kPa) |
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Minimum Supply Pressure: |
4.5" WC (1.12 kPa) |
4.5" WC (1.12 kPa) |
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Maximum Supply Pressure: |
10.5" WC (2.66 kPa) |
10.5" WC (2.66 kPa) |
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Orifice Size: |
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# 30 |
# 29 |
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GAS RATING - PROPANE/LP |
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M36P(B,H), VM36P(B,H) |
M42P(B,H), VM42P(B,H) |
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Max. Input Rating: |
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40,000 Btu/Hr |
45,000 Btu/Hr |
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Manifold Pressure: |
10" WC (2.49 kPa) |
10" WC (2.49 kPa) |
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Minimum Supply Pressure: |
11" WC (2.74 kPa) |
11" WC (2.74 kPa) |
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Maximum Supply Pressure: |
13" WC (3.23 kPa) |
13" WC (3.23 kPa) |
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Orifice Size: |
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# 52 |
# 51 |
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For Use With |
A |
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F |
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6"Ø Type B-1 |
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Vent Pipe Only |
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HEARTH AREA |
H |
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DIMENSIONS |
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Stand Off |
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D |
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Collar |
7" |
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B |
C |
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G |
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7" |
Alternate Gas |
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Supply Inlet |
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X |
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Glass Door |
1.5" |
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(Optional) |
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13.5" |
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K |
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Outside Air |
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Kit Location I |
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N O |
(Optional) |
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R |
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T |
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W |
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7" |
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Q |
P |
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L |
V |
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M |
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Model 36 |
Model 42 |
Model 36 |
Model 42 |
Model 36 |
Model 42 |
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A |
29" |
36" |
I |
40 1/4" |
44 1/4" |
Q |
13 7/8" |
14" |
B |
5/8" |
5/8" |
J |
21" |
24" |
R |
10 1/2" |
12 1/2" |
C |
41" |
48" |
K |
8" |
9" |
S |
2 1/2" |
2 1/2" |
D |
12" |
14" |
L |
34 3/4" |
42" |
T |
8 1/8" |
8 1/8" |
E |
21 1/4" |
23" |
M |
42" |
49" |
U |
11" |
12 3/4" |
F |
22 1/4" (24" w/o Brick) |
29 1/4" (31" w/o Brick) |
N |
36" |
40" |
V |
7" |
7" |
G |
32 5/8" (34" w/o Brick) |
39 1/2" (41 1/4" w/o Brick) |
O |
37" |
41" |
W |
2 1/4" |
2 1/4" |
H |
15 3/4" (16 3/4" w/o Brick) |
17 3/4" (18 3/4" w/o Brick) |
P |
8 5/8" |
10 1/2" |
X |
5" |
4 1/2" |
Figure 2 - Appliance Dimensions
6 |
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108795-01V |
CLEARANCES
Minimum clearances to combustibles are: Back and Sides of Outer Surround 0" min.
Drywall to Sides of Front Face |
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(Nailing Flanges) |
0" min. |
“B” Vent Surfaces |
1" min. |
Ceiling to Opening |
42" min. |
Floor |
0" min. |
Perpendicular Wall |
See Figure 6 |
CAUTION: Do not block required air spaces with insulation or any other material. Do not obstruct effective opening of appliance with any type of facing material.
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Nailing 2 x 4 Stud |
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Left Side |
Flange |
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Back |
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Surround |
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0" Clearance |
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0" |
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Front Face |
Drywall |
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Figure 3 - Minimum Clearances |
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(Top View) |
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1" (2.5 cm) |
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Min. Clearance |
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to "B" Vent's |
Ceiling |
Outer Pipe |
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42" (106.7 cm) |
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Min. Clearance |
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from Opening to |
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Ceiling |
0" Clearance |
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* |
* |
* |
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DO NOT BLOCK |
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OR OBSTRUCT |
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0" Clearance to |
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OPENINGS |
Combustible or |
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Noncombustible |
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Flooring |
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Maintain 2" (5.1 cm) Min. Clearance to Transition Pipe as Measured at Outer Vent Collar
*Required air spaces are indicated with
an "*". Do not pack with insulation or any other material.
Figure 4 - Minimum Clearances
(Front View)
MANTEL CLEARANCES and Wall Details
A combustible mantle shelf maybe installed a maximum 12" (22.9 cm) from the wall. Figures 5 and 6 show the minimum allowable distances from various combustible mantle components in relation to fireplace opening.
Combustible 12" Materials
(22.9 cm)
Header 6" (15.2 cm)
A
Spacer
B
3" (7.6 cm)
1 1/2"
(3.8 cm) Max.
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M36(B,H), |
M42(B,H), |
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M36P(B,H) |
M42P(B,H) |
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VM36(B,H), |
VM42(B,H), |
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VM36P(B,H) |
VM42P(B,H) |
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14" (35.6 cm) |
15" (38 cm) |
B |
8" (20.3 cm) |
9" (22.9 cm) |
Figure 5 - Mantel Clearances - Side View
(Cross Section)
TOP VIEW
Combustible
Outer Surround Material May
Be Used
1 1/2" |
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SAFE |
(3.8 cm) |
3" (7.6 cm) |
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ZONE |
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Max. |
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Max. |
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6" (15.2 cm) |
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Max. |
A |
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B |
Perpendicular |
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Wall |
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M36(B,H), |
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M42(B,H), |
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M36P(B,H) |
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M42P(B,H) |
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VM36(B,H), |
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VM42(B,H), |
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VM36P(B,H) |
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VM42P(B,H) |
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9" (22.9 cm) |
6" (15.2 cm) |
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B |
12" (30.5 cm) |
9" (22.9 cm) |
Figure 6 - Side Clearances - Top View
(Cross Section)
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7 |
Pre-Installation Preparation
Continued
FRAMING
1.Frame appliance enclosure as illustrated in Figures 7 and 8.
Note: If a wall covering is used to line the enclosure, then all measurements must be from the surface of the covering.
2.Place the appliance into the framing and secure it.
Note: If appliance is to be raised above floor level, a platform must be built to support the appliance.
3.Install the supply line to the appliance using a 1/2" NPT black iron gas line terminating 2 5/16" above the bottom of the appliance. The gas line must be installed through the lower left side access point or alternate access hole in the bottom of the appliance (see Figure 19, page 13).
4.Repack insulation around the gas line to cover any remaining openings in the conduit sleeve. Prepare the incoming gas line with teflon tape or pipe joint compound and hook-up incoming gas line to the flexible gas line.
Note: If 1/2" NPT black iron pipe does not mate with fitting at the end of flexible gas line, remove fitting and replace with a 37° flare 3/4"-12, 1/2" NPT (female) fitting.
WARNING: When finishing appliance, do not overlap combustible material onto the black front face. Brick, tile or other noncombustible materials may be applied to the face provided that any gap is between the material used and the face is caulked with a noncombustible caulking.
A
B
C
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M36(B,H), |
M42(B,H), |
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M36P(B,H) |
M42P(B,H) |
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VM36(B,H), |
VM42(B,H), |
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VM36P(B,H) |
VM42P(B,H) |
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A |
40 3/8" (102 cm) |
44 3/8" (112 cm) |
B |
21 3/8" (54.3 cm) |
23 1/8" (58.7 cm) |
C |
41 1/4" (104.8 cm) |
48 1/4" (122.6 cm) |
Figure 7 - Rough Opening for Installing in Wall
These Dimensions Allow for a 3/4" Clearance at Sides and Back of Fireplace. However, 0" Clearance is Permitted.
D
C
A
B
3/4" Clearance Not Required
at Nailing Flanges
M36(B,H), |
M42(B,H), |
M36P(B,H) |
M42P(B,H) |
VM36(B,H), |
VM42(B,H), |
VM36P(B,H) |
VM42P(B,H) |
A |
24 |
1 |
/ " (62.2 cm) |
27 |
9 |
/ " (70 cm) |
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B |
73 7/8" (187.6 cm) |
83 7/8" (213 cm) |
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C |
52 |
3 |
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16 |
" (132.6 cm) |
59 |
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16 |
" (150.6 cm) |
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D |
17 |
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/ " (43.8 cm) |
19 |
1 |
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" (49.5 cm) |
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Figure 8 - Corner Installation Guidelines
8 |
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108795-01V |
Pre-Installation Preparation
Continued
Installing Transition Pipe and Starter Collar
The transition pipe and starter collar shown in Figure 9 are supplied with the fireplace, unattached and ready for installation. Remove starter collar and set aside. Slide transition pipe over vent collar and attach with a minimum of three screws. Replace starter collar over transition pipe and attach using four screws located on leg stands (five used on model M42). To install B-vent piping, slide the first piece of B-vent over transition pipe and attach with either a minimum of two screws or other means approved by the vent manufacturer.
B-Vent Piping
Starter Collar
Transition Pipe
Vent Collar
Figure 9 - Installing Transition Pipe and
Starter Collar
A B-type venting system must be connected to the appliance for venting to the outside of the building.
The following section is provided as a guide to a standard B-type vent installation.
Standing codes requirements concerning B- type vent installations may vary within your state, province or local codes jurisdiction. Therefore, it is recommended that you check with your local building codes for specific requirements or in absence of local codes, follow Section 7.0 of the current National Fuel Gas Code ANSI Z223.1/NFPA 54.
This gas appliance must be vented to the outdoors only and may not be terminated into an attic space or into a chimney flue servicing a solid fuel burning appliance.
This appliance may be vented through a manufactured chimney system or a masonry chimney using a B-vent adapter or a chimney liner system if all are listed, inspected and approved by local codes and/or building authorities.
The examples shown in Figure 10, page 10 are typical of most B-vent installations and codes practices.
Example 1: Shows the minimum allowable system height and lateral offset for a 60° or greater inclination. Code specifies that offsets at 60° or greater are considered horizontal and must follow the 75% rule for lateral to total vertical system height. Codes also allow only one offset in the total system when at
60° or greater. The total vertical height in this example represents the minimum height of 8 feet and therefore the allowable lateral is 6 feet when the 75% rule applies. If the lateral length must exceed 75% then the system must be sized in accordance with Category I venting tables.
Example 2: Shows a multiple offset each at 45° of inclination. Multiple offsets are permitted if they do not exceed 45° of inclination. The total lengths of the two offsets are not required to meet the 75% allowable rule.
Example 3: Shows a single offset at 45° of inclination and therefore the lateral length at
10 feet of offset does not have to meet the 75% rule.
In each case the offsets must be supported and firestops must be positioned wherever the vent must pass through a sub-floor, ceiling joist or an attic overhang. The vent pipe must terminate vertically into a listed type vent cap and extend a sufficient height through an approved roof flashing, roof jack or a roof thimble. At all points listed clearances must be maintained.
Vent terminations must be located in accordance with height and proximity rules of NFPA No. 54. These rules apply to vents at 12" diameter or less and require a minimum height in accordance with the roof pitch and a minimum of 8 ft. distance from a vertical wall or obstruction (see Figure 11, page 10).
108795-01V |
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9 |
Venting INSTALLATION
Continued
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Listed |
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Vent Cap |
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Listed |
Listed |
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Vent Cap |
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Vent Cap |
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Maintain |
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Maintain |
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Listed |
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Listed |
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Clearance |
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Clearance |
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Maintain |
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Support Each |
Maintain |
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Listed |
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Lateral At |
Listed |
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Clearance |
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60° |
Least Every |
45°Clearance |
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8' Position |
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6 Feet |
12' Min. |
45° |
10' |
6' |
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Position |
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12' Min. Firestop |
Position |
Firestop |
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12' Min. |
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Firestop |
45° |
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Maintain |
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Maintain |
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Maintain |
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Listed |
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Listed |
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Listed |
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Clearance |
Clearance |
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Clearance |
EXAMPLE 1 EXAMPLE 2 EXAMPLE 3
Figure 10 - Typical B-Vent Configuration
Some codes areas allow the use of existing B-type vent systems if the system is at or above the recommended diameter of the flue, in this case 6".
The flue connection must be made using listed B-type connectors and the existing system must be code inspected for damage and proper installation.
It is not recommended that this appliance be common vented with an existing gas burning appliance.
Note: Before connecting this appliance to an existing vent system consult with your local architect, planner or building official.
WARNING: This appliance must be properly connected to a system and must not be connected to a chimney flue servicing a separate solid fuel burning appliance.
Lowest |
Listed |
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Discharge |
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Vent Cap |
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Opening |
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8 Ft. Min. |
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Listed |
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x |
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Gas |
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Vent |
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12 |
Roof Pitch x/12 |
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Listed Clearance |
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H (Min) |
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Height |
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From Roof |
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H (Min.) |
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Roof Pitch |
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Feet |
Meter |
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Flat to 6/12 |
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1.0 |
ax 0.30 |
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6/12 to 7/12 |
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1.25 |
0.38 |
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Over 7/12 to 8/12 |
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1.5 |
0.46 |
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Over 8/12 to 9/12 |
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2.0 |
0.61 |
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Over 9/12 to 10/12 |
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2.5 |
0.76 |
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Over 10/12 to 11/12 |
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3.25 |
0.99 |
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Over 11/12 to 12/12 |
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4.0 |
1.22 |
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Over 12/12 to 14/12 |
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5.0 |
1.52 |
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Over 14/12 to 16/12 |
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6.0 |
1.83 |
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Over 16/12 to 18/12 |
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7.0 |
2.13 |
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Over 18/12 to 20/12 |
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7.5 |
2.27 |
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Over 20/12 to 21/12 |
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8.0 |
2.44 |
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Figure 11 - B-Vent Terminations
10 |
www.desatech.com |
108795-01V |