Desa CSPIPT, CSPBNT, CSPINT, CSPBPT, CSBPT User Manual 2
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UNVENTED (VENT-FREE) GAS STOVE HEATER
OWNER’S OPERATION AND INSTALLATION MANUAL
Golden Oak Logs Shown
MODELS CSBNT, CSBPT, CSPBNT, CSPBPT, CSPINT, CSPIPT
Propane/LP and Natural Gas Thermostat Control Gas Log Heaters
(Burner System For Cast Iron Stoves)
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 quali-
fied installer, service agency or the gas supplier.
Save 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.
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 Ventilation
section on page 5 of this manual.
This appliance may be installed in an aftermarket,* permanently located, manufactured (mobile) home, where
not prohibited by 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.
* Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer
State of Massachusetts: The installation must be made by a licensed plumber or gas fitter in the
Commonwealth of Massachusetts.
Sellers of unvented propane or natural gas-fired supplemental room heaters shall provide to each
purchaser a copy of 527 CMR 30 upon sale of the unit.
Vent-free gas products are prohibited for bedroom and bathroom installation in the Common
wealth of Massachusetts.
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TABLE OF CONTENTS
Safety Information ............................................... 3
Product Identification ...........................................
Local Codes ........................................................ 4
Product Features ................................................. 5
Air for Combustion and Ventilation ......................
Unpacking ........................................................... 7
Installation ........................................................... 8
Operating Heater ............................................... 13
Inspecting Burners ............................................ 14
Cleaning and Maintenance ................................ 14
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Troubleshooting ................................................. 16
4
Specifications .................................................... 19
Service Hints ..................................................... 19
Te
chnical Service .............................................. 19
5
Replacement Parts ............................................ 19
Accessories ....................................................... 19
Illustrated Parts Breakdown and Parts List ....... 20
Parts Centrals .................................................... 23
Warranty Information ...........................
Back Cover
111487-01E
SAFETY INFORMATION
WARNING: This product contains and/or generates chemicals
known to the state of California
to cause cancer or birth defects
or other reproductive harm.
IMPORTANT: Read this owner’s
manual carefully and completely
before trying to assemble, operate
or service this fireplace. Improper
use of this fireplace 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 head
aches, 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.
Natural and Propane/LP Gas: Natural and pro-
pane/LP gases are odorless. An odor-making agent
is added to the gas. The odor helps you detect a gas
leak. However, the odor added to the gas can fade.
Gas may be present even though no odor exists.
Make certain you read and understand all warn
ings. Keep this manual for reference. It is your
guide to safe and proper operation of this heater.
WARNING: Any change to
this heater or its controls can
be dangerous.
WARNING: Do not allow fans
to blow directly into the stove.
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 on the heater.
Stove becomes very hot when
running heater. Keep children
and adults away from hot surface
to avoid burns or clothing ignition. Heater will remain hot for a
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time after shutdown. Allow surface to cool before touching.
Carefully supervise young children when they are in the room
with heater.
Keep the appliance area clear
and free from combustible ma
terials, gasoline and other flammable vapors and liquids.
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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) in
side 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
neighborʼs phone. Follow the gas supplierʼs
instructions
• if you cannot reach your gas supplier, call
the fire department
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SAFETY INFORMATION
Continued
4. This heater shall not be installed in a bedroom
or bathroom.
5. Do not place stove directly on carpeting,
vinyl tile or any combustible material other
than wood. The stove must set on a metal
or wood panel extending the full width and
depth of the appliance.
6. Do not use this stove as a wood burning fire
place. Use only model 111485-02/111485-01
vent-free gas log heater.
7. Do not add extra logs or ornaments such as pine
cones, vermiculite or rock wool. Using these
added items can cause sooting.
8. This log heater is designed to be smokeless. If
logs ever appear to smoke, turn off heater and
call a qualified service person.
initial operation, slight smoking could occur
due to log curing and heater burning manufacturing residues.
9. To prevent the creation of soot, follow the
instructions in Cleaning and Maintenance,
page 14.
10. Before using furniture polish, wax, carpet
cleaners 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.
11. This heater needs fresh, outside air ventilation to
run properly. This heater has an Oxygen Deple
tion Sensing (ODS) safety shutoff system. The
ODS shuts down the heater if not enough fresh
air is available. See Air for Combustion and
Ventilation, page 5. If heater keeps shutting
off, see Troubleshooting, page 16.
12. Do not run heater
• where flammable liquids or vapors are used
or stored
• when under dusty conditions
13. Do not use this stove to cook food or burn paper
or other objects.
14. Do not use heater if any part has been exposed
to or 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.
15. Do not operate heater if any log is broken. Do
not operate heater if a log is chipped (dimesized or larger).
16. Turn heater off and let cool before servicing.
Only a qualified service person should service
and repair heater.
Note: During
17. Operating heater above elevations of 4,500
feet could cause pilot outage.
18. For propane/LP units, do not use propane/LP
tank of less than 100 lb. capacity.
19. Prov ide adeq ua te clearan ce s around air
openings.
20. Screen must be completely closed before using
heater. Never run heater with screen open.
PRODUCT
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IDENTIFICATION
One Piece Log Set
Stove
Body
Screen
Figure 1 - Typical Stove Cabinet Model
with Comfort Glow Gas Log Heater
Inside Stove Cavity
Stove Door
(Shown in the
open position)
Piezo
Ignitor
Control
Knob
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.
National Fire Protection Association, Inc.
1430 Broadway
New York, NY 10018
Batterymarch Park
Quincy, MA 02269
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111487-01E
PRODUCT FEATURES
OPERATION
This heater is clean burning. It requires no outside
venting. There is no heat loss out a vent or up a
chimney. Heat is generated by realistic, dancing
yellow flames. This heater is designed for vent-free
operation. State and local codes in some areas
prohibit the use of vent-free heaters.
SAFETY PILOT
This heater has a pilot with an Oxygen Depletion Sensing (ODS) safety shutoff system. The
ODS/pilot is a required feature for vent-free room
heaters. The ODS/pilot shuts off the heater if there
is not enough fresh air.
PIEZO IGNITION SYSTEM
This heater has a piezo ignitor. This system requires no
matches, batteries or other sources to light heater.
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.
Todayʼs 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 effi
cient, 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, fireplaces, 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 fuel-burning 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
111487-01E 5
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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 5 through 7 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 ven
tilation. 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 exposed to the out
side atmosphere have a continuous
water vapor retarder with a rating of one
perm (6 x 10-11 kg per pa-sec-m2) or less
with openings gasketed or sealed and
b. weather stripping has been added on
openable windows and doors and
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 plumb
ing, 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 Ventilation Air From Outdoors, page 7.
If your home does not meet all of the three
criteria above, proceed to Determining Fresh-
Air Flow For Heater Location, page 6.
Confined and Unconfined Space
The National Fuel Gas Code ANSI Z223.1/NFPA
54 defines a confined space as a space whose vol
ume is less than 50 cubic feet per 1,000 Btu per hour
3
(4.8 m
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per kw) of the aggregate input rating of all
appliances installed in that space and an unconfined
space as a space whose volume is not less than 50
cubic feet per 1,000 Btu per hour (4.8 m
the aggregate 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
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AIR FOR COMBUSTION
AND VENTILATION
Continued
DETERMINING FRESH-AIR FLOW
FOR HEATER LOCATION
Determining if You Have a Confined or
Unconfined Space
Use this work sheet 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 door
less 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: Space size 20 ft. (length) x 16 ft.
(width) x 8 ft. (ceiling height) = 2560 cu. ft.
(volume of space)
If additional ventilation to adjoining room is sup
plied 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: 2560 cu. ft. (volume of space) x 20 =
51,200 (maximum Btu/Hr the space can support)
3. Add the Btu/Hr of all fuel burning appliances
in the space.
Vent-free heater ________
Gas water heater* ________
Gas furnace ________
Vented gas heater ________
Gas fireplace logs ________
Other gas appliances* + _______
Total = _______
* Do not include direct-vent gas appliances.
Direct-vent draws combustion air from the
outdoors and vents to the outdoors.
Example:
Gas water heater ________
Vent-free heater + ________
Total = ________
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)
40,000
30,000
70,000
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
Example: 51,200 Btu/ Hr (maxi mu m the
space can support)
70,000 Btu/Hr (actual amount of
Btu/Hr used)
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.
B. Vent room directly to the outdoors. See Ven
tilation Air From Outdoors, page 7.
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 maxi
mum Btu/Hr the space can support, the space is
an unconfined space. You will need no additional
fresh air ventilation.
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WARNING: If the area in
which the heater may be oper
ated 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 National Fuel Gas Code,
ANSI Z223.1/NFPA 54, Section
5.3 or applicable local codes.
VENTILATION AIR
Ventilation Air From Inside Building
This fresh air would come from an adjoining un
confined 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,
page 7). You can also remove door into adjoining
room (see option 3, Figure 2, page 7). 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.
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111487-01E
AIR FOR COMBUSTION
Or
Remove
Door into
Adjoining
Room,
Option
3
Ventilation Grills
Into Adjoining Room,
Option
2
Ve
ntilation
Grills
Into Adjoining
Room,
Option 1
12"
12"
Outlet
Air
Ve
ntilated
Attic
Outlet
A
ir
Inlet
Air
Inlet Air
Ve
ntilated
Crawl Space
To
Crawl
Space
To Attic
AND VENTILATION
Continued
Figure 2 - Ventilation Air from Inside
Building
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 ventilation grills or ducts.
IMPORTANT: Do not provide openings for inlet
or outlet air into attic if attic has a thermostatcontrolled power vent. Heated air entering the attic
will activate the power vent.
UNPACKING
1. Lift o ff corrugated box enclosing stove
body crating.
2. Remove screws fastening back and top of wood
frame enclosure. Two or more people must care
fully lift stove up and out of wooden crate.
3. Remove plastic bag from stove body.
4. Remove back panel from stove (see Figure 4).
Use an adjustable wrench or a 10 mm socket.
Remove four (4) bolts and washers. Keep bolts
and washers to reattach back panel later.
5. Remove bubble-wrapped log set, rod and
screen from stove. Remove all protective
packaging applied for shipment.
6. Check all items for any shipping damage. If
damaged, promptly inform dealer where you
bought heater. Some fiber flakes may fall from
logs. This is acceptable.
7. Place freestanding stove near desired location
in room.
Top of Wood
Frame Enclosure
STOVE TOP
Back of Wood Frame Enclosure
Back
Panel
Screws
Back
Panel
Screws
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STOVE BACK
Figure 4 - Unpacking Stove from Wooden
Shipping Enclosure
Figure 3 - Ventilation Air from Outdoors
111487-01E 7
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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.
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 Combustion and Ventilation
CHECK GAS TYPE
Use the correct gas type (natural or propane/LP) for
your unit. If your stove heater gas type is different
from your house gas type, do not install heater.
Call dealer where you bought heater for proper
type heater.
, page 5.
WARNING: This appliance
is equipped for (natural or propane/LP) gas. Field conversion
is not permitted.
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
CAUTION: This heater creates warm air currents. These
currents move heat to wall sur
faces next to heater. Installing
heater next to vinyl or cloth wall
coverings or operating heater
where impurities (such as, but
not limited to, tobacco smoke,
aromatic candles, cleaning fluids, oil or kerosene lamps, etc.) in
the air exist, may discolor walls
or cause odors.
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.
Carefully follow the instructions below. This stove
is a freestanding unit designed to set directly on the
floor. DO NOT place stove directly on carpeting,
vinyl tile or any combustible material other than
wood. The stove must be set on a metal or wood
panel extending the full width and depth of the
stove for these floor coverings. Important: You
must maintain minimum wall and ceiling clear
ances during installation. The minimum clearances
are shown in Figure 5, page 9. Measure from
outermost point of stove top.
Minimum Wall and Ceiling Clearances
(see Figure 5, page 9)
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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.
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111487-01E
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