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CLEANING AND
MAINTENANCE
Continued
CABINET
Air Passageways
Use a vacuum cleaner or pressurized air to
clean.
Exterior
Use a soft cloth dampened with a mild soap and
water mixture. Wipe the cabinet to remove dust.
LOGS
• If you remove logs for cleaning, refer to Install-
ing Logs, page 12, to properly replace logs.
• Replace log(s) if broken or chipped (dime-sized
or larger).
MAIN BURNER
Periodically inspect all burner flame holes with
the heater running. All slotted burner flame holes
should be open with yellow flame present. All
round burner flame holes should be open with a
small blue flame present. Some burner flame holes
may become blocked by debris or rust, with no
flame present. If so, turn off heater and let cool.
Remove blockage. Blocked burner flame holes
will create soot.
SPECIFICATIONS
S39PT
Btu (Variable)
20,000/39,000
Type Gas
Propane/LP Only Natural Only
Ignition
Manifold Pressure 8" W.C.
Inlet Gas Pressure (in. of water) *
Maximum
Minimum
Dimensions, Inches (H x W x D)
Stove
31 x 32 x 19
Carton
24 x 31
Weight, pounds
Stove
Shipping
* For purposes of input adjustment
20
S39NT
20,000/39,000
Piezo
Piezo
3.5" W.C.
14"
10.5"
11"
5"
/
31 x 32 x 19
1
4
/
x 35
/
24 x 31
/
1
1
1
2
4
78 lbs.
78 lbs.
95 lbs.
95 lbs.
www.desatech.com
When Gas Pressure Is Too Low
• pilot will not stay lit
• burners will have delayed ignition
• heater will not produce specified heat
• propane/LP gas supply may be low
You may feel your gas pressure is too low. If so, con-
tact your local propane/LP or natural gas supplier.
TECHNICAL SERVICE
You may have further questions about installation,
operation or troubleshooting. If so, contact DESA
Heating Productsʼ Technical Service Department
at 1-866-672-6040. When calling please have your
model and serial numbers of your heater ready.
You can also visit DESA Heating Productsʼ techni-
cal services web site at www.desatech.com.
REPLACEMENT PARTS
Note: Use only original replacement parts. This
will protect your warranty coverage for parts
replaced under warranty.
PARTS UNDER WARRANTY
Contact authorized dealers of this product. If
they canʼt supply original replacement part(s),
call DESA Heating Productsʼ Technical Service
Department at 1-866-672-6040 for referral in-
formation.
When calling DESA Heating Products, have
ready
• your name
• your address
• model and serial numbers of your heater
• how heater was malfunctioning
• type of gas used (propane/LP or natural gas)
• purchase date
Usually, we will ask you to return the part to the
factory.
/
1
4
x 35
/
1
PARTS NOT UNDER WARRANTY
2
4
Contact authorized dealers of this product or Parts
Central (see page 24). If they canʼt supply original
replacement part(s), call DESA Heating Products
at 1-866-672-6040 for referral information.
When calling DESA Heating Products, have
ready
• model number of your heater
• the replacement part number
SERVICE HINTS
111417-01B
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