Desa S39PT User Manual
VENT-FREE PROPANE/LP GAS FREESTANDING
PEDESTAL STOVE SYSTEM
OWNER’S OPERATION AND INSTALLATION MANUAL
S39PT
20,000 to 39,000 Btu/Hr
Thermostatically-
Controlled
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WARNING: If the information in this manual is not
followed exactly, a fire or explosion may result causing property damage, personal injury, or loss of life.
— Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any
other appliance.
— WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not
use any phone in your building.
• Immediately call your gas supplier from a
neighbor’s phone. Follow the gas supplier’s
instructions.
• If you cannot reach your gas supplier, call
the fire department.
— Installation and service must be performed by
a qualified installer, service agency, or the gas
supplier.
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.
WARNING: This is an unvented
gas-fired heater. It uses air (oxygen) from the room in which it is
installed. Provisions for adequate combustion and ventilation air must be provided. Refer
to
Air for Combustion and Ven-
tilation
section on page 4 of this
manual.
This appliance may be installed in an aftermarket*, permanently located, manufactured
(mobile) home, where not prohibited by local codes.
*Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer
Save this manual for future reference.
VENT-FREE PROPANE/LP PEDESTAL STOVE
SAFETY
INFORMATION
WARNINGS
WARNING ICON G 001
IMPORTANT: Read this owner’s
manual carefully and completely
before trying to assemble, operate, or service this heater. Improper use of this heater can cause
serious injury or death from burns,
fire, explosion, electrical shock,
and carbon monoxide poisoning.
DANGER: Carbon monoxide
poisoning may lead to death!
Carbon Monoxide Poisoning: Early signs of
carbon monoxide poisoning resemble the flu,
with headaches, dizziness, or nausea. If you
have these signs, the heater may not be working properly. Get fresh air at once! Have
heater serviced. Some people are more affected by carbon monoxide than others. These
include pregnant women, people with heart or
lung disease or anemia, those under the influence of alcohol, and those at high altitudes.
Propane/LP Gas: Propane/LP gas is odor-
less. An odor-making agent is added to propane/LP gas. The odor helps you detect a
propane/LP gas leak. However, the odor added
to propane/LP gas can fade. Propane/LP 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 heater.
WARNING: Any change to this
fireplace or its controls can be
dangerous.
WARNING: Do not allow fans
to blow directly into the heater.
Avoid any drafts that alter burner
flame patterns. Ceiling fans can
create drafts that alter burner
flame patterns. Altered burner
patterns can cause sooting.
WARNING: Do not use a
blower insert, heat exchanger
insert, or other accessory not approved for use with this heater.
Due to high temperatures, the
appliance should be located out
of traffic and away from furniture
and draperies.
Do not place clothing or other
flammable material on or near
the appliance. Never place any
objects in the fireplace.
Heater becomes very hot when
running fireplace. 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.
Carefully supervise young children when they are in the room
with fireplace.
You must operate this heater with
the heater screen in place. Make
sure heater screen is in place
before running heater.
Keep the appliance area clear and
free from combustible materials,
gasoline, and other flammable vapors and liquids.
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.
2. Do not place propane/LP supply tank(s)
inside any structure. Locate propane/
LP supply tank(s) outdoors.
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 your gas supplier,
call the fire department
4. This heater shall not be installed in a
bedroom or bathroom.
5. Do not use this heater as a wood-burning heater. Use only the logs provided
with the heater.
6. Do not add extra logs or ornaments
such as pine cones, vermiculite, or rock
wool. Using these added items can
cause sooting. Do not add lava rock
around base. Rock and debris could fall
into the control area of heater. After
servicing, always replace screen before
operating heater.
7. You must operate this heater with the
heater screen in place. Make sure heater
screen is in place before running heater.
8. To prevent the creation of soot, follow
the instructions in Cleaning and Main-
tenance, page 15.
9. Before using furniture polish, wax, carpet cleaner, or similar products, turn
heater off. If heated, the vapors from
these products may create a white powder residue within burner box or on
adjacent walls or furniture.
10. This heater needs fresh air ventilation
to run properly. This heater has an Oxygen Depletion Sensing (ODS) safety
shutoff system. The ODS shuts down
the heater if not enough fresh air is
available. See Air for Combustion and
Ventilation, pages 4 through 6. If heater
keeps shutting off, see Troubleshoot-
ing, pages 16 through 18.
11. Do not run heater
• where flammable liquids or vapors
are used or stored.
• under dusty conditions.
12. Do not use this heater to cook food or
burn paper or other objects.
13. Do not use heater if any part has been
under water. Immediately call a qualified service technician to inspect the
room heater and to replace any part of
the control system and any gas control
which has been under water.
14. Turn off and unplug heater and let cool
before servicing. Only a qualified service person should service and repair
heater.
15. Operating heater above elevations of
4,500 feet could cause pilot outage.
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OWNER’S MANUAL
SAFETY
INFORMATION
Continued
16. Do not operate heater if any log is broken. Do not operate heater if a log is
chipped (dime-sized or larger).
17. To prevent performance problems, do
not use propane/LP fuel tank of less
than 100 lbs. capacity.
18. Provide adequate clearances around air
openings.
PRODUCT
IDENTIFICATION
LOCAL CODES
Install and use heater with care. Follow all
local codes. In the absence of local codes, use
the latest edition of The National Fuel Gas
Code, ANSI Z223.1/NFPA 54*.
*Available from:
American National Standards Institute, Inc.
1430 Broadway
New York, NY 10018
National Fire Protection Association, Inc.
Batterymarch Park
Quincy, MA 02269
This heater is designed for vent-free operation. State and local codes in some areas
prohibit the use of vent-free heaters.
UNPACKING
1. Remove top inner pack.
2. Tilt carton so that stove is upright.
3. Remove protective side packaging.
4. Slide stove out of carton.
5. Remove protective plastic wrap.
6. Remove screen by lifting and then pulling forward.
7. Remove log set by cutting plastic ties.
8. Carefully unwrap log.
9. Check for any shipping damage. If
stove or log is damaged, promptly inform dealer where you bought stove.
PRODUCT
FEATURES
SAFETY PILOT
This heater has a pilot with an Oxygen Depletion Sensing (ODS) safety shutoff system.
The ODS is a required feature for vent-free
room heaters. The ODS shuts off the heater if
there is not enough fresh air.
Screen
Logs
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Heater Controls
(Inside Door)
Figure 1 - Vent-Free Propane/LP Gas Stove
PIEZO IGNITION SYSTEM
This heater has a piezo ignitor. This system
requires no matches, batteries, or other
sources to light heater.
Stove
Cabinet
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VENT-FREE PROPANE/LP PEDESTAL STOVE
AIR FOR
COMBUSTION AND
VENTILATION
WARNING: This heater shall
not be installed in a confined space
or unusually tight construction
unless provisions are provided
for adequate combustion and ventilation air. Read the following instructions to insure proper fresh
air for this and other fuel-burning
appliances in your home.
Today’s homes are built more energy efficient than ever. New materials, increased
insulation, and new construction methods
help reduce heat loss in homes. Home
owners weather strip and caulk around
windows and doors to keep the cold air out
and the warm air in. During heating months,
home owners want their homes as airtight
as possible.
While it is good to make your home energy
efficient, your home needs to breathe. Fresh
air must enter your home. All fuel-burning
appliances need fresh air for proper combustion and ventilation.
Exhaust fans, heaters, clothes dryers, and
fuel burning appliances draw air from the
house to operate. You must provide adequate fresh air for these appliances. This
will insure proper venting of vented fuelburning appliances.
PROVIDING ADEQUATE
VENTILATION
The following are excerpts from National
Fuel Gas Code ANSI Z223.1/NFPA 54, Section 5.3, Air for Combustion and Ventilation.
All spaces in homes fall into one of the three
following ventilation classifications:
1. Unusually Tight Construction
2. Unconfined Space
3. Confined Space
The information on pages 4 through 6 will
help you classify your space and provide
adequate ventilation.
Unusually Tight Construction
The air that leaks around doors and windows may provide enough fresh air for
combustion and ventilation. However, in
buildings of unusually tight construction,
you must provide additional fresh air.
Unusually tight construction is defined as construction where:
a. walls and ceilings e xposed to the
outside atmosphere have a continuous water vapor retarder with
a rating of one perm (6 x 10
per pa-sec-m2) or less with openings gasketed or sealed
b. weather stripping has been
added on openable windows and
doors
c. caulking or sealants are applied
to areas such as joints around
window and door frames, between sole plates and floors, between wall-ceiling joints, between wall panels, at penetrations for plumbing, electrical, and
gas lines, and at other openings.
If your home meets all of the three
criteria above, you must provide additional fresh air. See
From Outdoors
If your home does not meet all of the
three criteria above, proceed to
and
, page 6
Ventilation Air
.
mining Fresh-Air Flow For Heater
Location,
page 5
.
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and
Deter-
kg
Confined and Unconfined Space
The National Fuel Gas Code, ANSI Z223.1/
NFPA 54 defines a confined space as a
space whose volume is less than 50 cubic
feet per 1,000 Btu per hour (4.8 m
of the aggregate input rating of all appliances installed in that space and an
unconfining space as a space whose volume
is not less than 50 cubic feet per 1,000 Btu
per hour (4.8 m
input rating of all appliances installed in that
space. Rooms communicating directly with
the space in which the appliances are installed*, through openings not furnished
with doors, are considered a part of the
unconfined space.
* Adjoining rooms are communicating only
if there are doorless passageways or ventilation grills between them.
3
per kw) of the aggregate
3
per kw)
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OWNER’S MANUAL
AIR FOR
COMBUSTION AND
VENTILATION
Continued
DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION
Determining if You Have a Confined or Unconfined Space
Use this worksheet to determine if you have a confined or unconfined space.
Space: Includes the room in which you will install heater plus any adjoining rooms with doorless passageways or ventilation grills between
the rooms.
1. Determine the volume of the space (length x width x height).
Length x Width x Height = ____________________ cu. ft. (volume of space)
Example:
If additional ventilation to adjoining room is supplied with grills or openings, add the volume of these rooms to the total volume of
the space.
2. Multiply the space volume by 20 to determine the maximum Btu/Hr the space can support.
_________________ (volume of space) x 20 = (Maximum Btu/Hr the space can support)
Example:
3. Add the Btu/Hr of all fuel burning appliances in the space.
Vent-free heater _________________Btu/Hr
Gas water heater* _________________Btu/Hr
Gas furnace _________________Btu/Hr
Vented gas heater _________________Btu/Hr
Gas heater logs _________________Btu/Hr
Other gas appliances* + _________________Btu/Hr
Total = _________________Btu/Hr
* Do not include direct-vent gas appliances. Direct-vent draws combustion air from the outdoors and vents to the outdoors.
4. Compare the maximum Btu/Hr the space can support with the actual amount of Btu/Hr used.
_________________ Btu/Hr (maximum the space can support)
_________________ Btu/Hr (actual amount of Btu/Hr used)
Example:
The space in the above example is a confined space because the actual Btu/Hr used is more than the maximum Btu/Hr the space can support.
You must provide additional fresh air. Your options are as follows:
A.
Rework worksheet, adding the space of an adjoining room. If the extra space provides an unconfined space, remove door to adjoining
room or add ventilation grills between rooms. See Ventilation Air From Inside Building, page 6.
B.
Vent room directly to the outdoors. See Ventilation Air From Outdoors, page 6.
C. Install a lower Btu/Hr heater, if lower Btu/Hr size makes room unconfined.
If the actual Btu/Hr used is less than the maximum Btu/Hr the space can support, the space is an unconfined space. You will need no
additional fresh air ventilation.
Space size 20 ft. (length) x 16 ft. (width) x 8 ft. (ceiling height) = 2560 cu. ft. (volume of space)
2560 cu. ft. (volume of space) x 20 = 51,200 (maximum Btu/Hr the space can support)
Example:
Gas water heater 30,000 Btu/Hr
Vent-free heater + 39,000 Btu/Hr
Total = 69,000 Btu/Hr
51,200 Btu/Hr (maximum the space can support)
69,000 Btu/Hr (actual amount of Btu/Hr used)
WARNING: If the area in which the heater may be operated is smaller than that defined as an unconfined space
or if the building is of unusually tight construction, provide adequate combustion and ventilation air by one of
the methods described in the
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National Fuel Gas Code, ANSI Z223.1/NFPA 54, Section 5.3
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or applicable local codes.
Continued
VENT-FREE PROPANE/LP PEDESTAL STOVE
AIR FOR
COMBUSTION AND
12"
VENTILATION
Continued
VENTILATION AIR
Ventilation Air From Inside
Building
This fresh air would come from an adjoining
unconfined space. When ventilating to an
adjoining unconfined space, you must provide two permanent openings: one within
12" of the ceiling and one within 12" of the
floor on the wall connecting the two spaces
(see options 1 and 2, Figure 2). You can also
remove door into adjoining room (see option 3, Figure 2). Follow the National Fuel
Gas Code, ANSI Z223.1/NFPA 54, Section
5.3, Air for Combustion and Ventilation for
required size of ventilation grills or ducts.
Ventilation Air From Outdoors
Provide extra fresh air by using ventilation
grills or ducts. You must provide two permanent openings: one within 12" of the
ceiling and one within 12" of the floor.
Connect these items directly to the outdoors
or spaces open to the outdoors. These spaces
include attics and crawl spaces. Follow the
National Fuel Gas Code, ANSI Z223.1/
NFPA 54, Section 5.3, Air for Combustion
and Ventilation for required size of ventila-
tion grills or ducts.
IMPORTANT:
for inlet or outlet air into attic if attic has
a thermostat-controlled power vent.
Heated air entering the attic will activate
the power vent.
Do not provide openings
Ventilation
Grills
Into Adjoining
Room,
Option 1
Or
Remove
Door into
Adjoining
Room,
Option
3
Ventilation Grills
Into Adjoining Room,
12"
Option 2
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Figure 2 - Ventilation Air from Inside Building
Outlet
Air
Ventilated
Attic
Outlet
Air
Inlet
Air
Inlet Air
Figure 3 - Ventilation Air from Outdoors
Crawl Space
To Attic
To
Crawl
Space
Ventilated
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OWNER’S MANUAL
INSTALLATION
NOTICE: This heater is intended
for use as supplemental heat. Use
this heater along with your primary heating system. Do not install this heater as your primary
heat source. If you have a central
heating system, you may run
system’s circulating blower while
using heater. This will help circulate the heat throughout the
house. In the event of a power
outage, you can use this heater
as your primary heat source.
WARNING: A qualified service person must install heater.
Follow all local codes.
WARNING: Never install the
heater
• in a bedroom or bathroom
• in a recreational vehicle
• where curtains, furniture,
clothing, or other flammable
objects are less than 42 inches
from the front, top, or sides of
the heater
• in high traffic areas
• in windy or drafty areas
IMPORTANT:
Vent-free heaters add moisture to the air. Although this is beneficial,
installing heater in rooms without enough
ventilation air may cause mildew to form
from too much moisture. See Air for Com-
bustion and Ventilation, pages 4 through 6.
CHECK GAS TYPE
Use only propane/LP gas. If your gas supply
is not propane/LP gas, do not install heater.
Call dealer where you bought heater for
proper type heater.
CLEARANCES TO
COMBUSTIBLES
(Vent-Free Operation Only)
WARNING: Maintain the minimum clearances. If you can, provide greater clearances from
floor, ceiling, and adjoining side
and back walls.
Front View
Side Wall Side Wall
12"
Minimum
Carefully follow the instructions below. This
stove is a freestanding unit designed to set
directly on the floor.
IMPORTANT:
You
must maintain minimum wall and ceiling
clearances during installation. The minimum clearances are shown in Figure 4.
Measure from outermost point of stove top.
Minimum Wall and Ceiling
Clearances (see Figure 4)
A. Clearances from outermost point of
stove top to any combustible side wall
should not be less than 12 inches.
B. Clearances from outermost point of
stove top to any combustible back wall
should not be less than 6 inches (Includes corner installations).
C. Clearances from the stove top to the
ceiling should not be less than 48
inches.
Ceiling
48"
Minimum
12"
Minimum
CAUTION: This heater creates warm air currents. These
currents move heat to wall surfaces next to heater. Installing
heater next to vinyl or cloth wall
coverings or operating heater
where impurities (such as tobacco smoke, aromatic candles,
cleaning fluids, oil or kerosene
lamps, etc.) in the air exist, may
discolor walls.
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Top View
12
"
Minimum
Side Wall Side Wall
Corner
Wall
Back Wall
6
"
Minimum
6
"
Minimum
"
12
Minimum
Front of
Stove Unit
"
Wall
6
Minimum
Figure 4 - Minimum Clearance to Walls and Ceiling
7
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Ceiling
48"
Minimum
Floor
Side View
6"
Minimum
Back Wall
Continued
VENT-FREE PROPANE/LP PEDESTAL STOVE
INSTALLATION
Continued
CONNECTING TO GAS
SUPPLY
The installer must supply an external regulator.
The external regulator will reduce incoming
gas pressure. You must reduce incoming gas
pressure to between 11 and 14 inches of water.
If you do not reduce incoming gas pressure,
heater regulator damage could occur. Install
external regulator with the vent pointing down
WARNING: A qualified service
person must connect heater to gas
as shown in Figure 6. Pointing the vent down
protects it from freezing rain or sleet.
supply. Follow all local codes.
CAUTION: Never connect
heater directly to the propane/LP
supply. This heater requires an external regulator (not supplied). Install the external regulator between
the heater and propane/LP supply.
Installation Items Needed
Before installing heater, make sure you have
the items listed below.
• external regulator (supplied by installer)
• piping (check local codes)
• sealant (resistant to propane/LP gas)
• equipment shutoff valve *
• test gauge connection *
• sediment trap
• tee joint
• pipe wrench
* An CSA design-certified equipment
shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. Purchase the optional CSA designcertified equipment shutoff valve from your
dealer. See Accessories, page 24.
Back View
Side View
Front
of
Stove
Unit
Gas Regulator
Inlet Connection
Figure 5 - Gas Regulator Location and
Gas Line Access Into Stove Cabinet
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Installation must include an equipment
shutoff valve, union, and plugged 1/8" NPT
tap. Locate NPT tap within reach for test
gauge hook up. NPT tap must be upstream
from heater (see Figure 7).
Propane/LP
Supply Tank
Figure 6 - External Regulator With Vent
Pointing Down
Figure 7 - Gas Connection
* Purchase the optional CSA design-certified equipment shutoff valve from your dealer.
**Minimum inlet pressure for purpose of input adjustment.
CAUTION: Use only new,
black iron or steel pipe. Internally-tinned copper tubing may
be used in certain areas. Check
your local codes. Use pipe of 1/2"
diameter or greater to allow
proper gas volume to heater. If
pipe is too small, undue loss of
pressure will occur.
External
Regulator
Vent
Pointing
Down
From External
Regulator (11"
W.C.** to 14"
W.C. Pressure)
Tee
Sediment
Trap
Joint
Pipe
Nipple
Cap
3" Minimum
See Accessories, page 24.
8
IMPORTANT:
Install equipment shutoff
valve in an accessible location. The equipment shutoff valve is for turning on or
shutting off the gas to the appliance.
Apply pipe joint sealant lightly to male
threads. This will prevent excess sealant
from going into pipe. Excess sealant in pipe
could result in clogged heater valves.
CAUTION: Use pipe joint sealant that is resistant to liquid petroleum (LP) gas.
We recommend that you install a sediment
trap in supply line as shown in Figure 7.
Locate sediment trap where it is within
reach for cleaning. Install in piping system
between fuel supply and heater. Locate sediment trap where trapped matter is not likely
to freeze. A sediment trap traps moisture
and contaminants. This keeps them from
going into heater controls. If sediment trap
is not installed or is installed wrong, heater
may not run properly.
CAUTION: Avoid damage to
regulator. Hold gas regulator with
wrench when connecting it to gas
piping and/or fittings.
CSA Design-Certified
Equipment Shutoff Valve
With 1/8" NPT Tap*
Approved
Flexible Gas
Hose (if allowed
by local codes)
Gas
Regulator
of Heater
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