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DES3 Series: Economical, Single Stage Heater

Premium Models

MP – Modulating Series

HL3 – Two Stage Series

DX3 – Single Stage Series

Standard Models

DET3 – Two Stage Series

DES3 – Single Stage Series

Residential Garage

LD3 – Two Stage Series

LS3 – Single Stage Series

Specialty Models

SS – Stainless Steel Series

QTD – Two Stage Quad

QTS – Single Stage Quad

DES3 Series: Economical, Single Stage Heater

 

Streamlined for economy and designed without sacrificing performance, the DES3 Series represents quality at an economical price. Utilizing a direct spark ignition system and hot-rolled steel emitter tubes, this series is the best in this class of equipment. V3_tubehtr_0

 

 

FeaturesSpecificationsLiteratureParts & AccessoriesFAQBuy

 

Specific Features

Tube-Features_eco
  • Tool-free access to controls.
  • Serviceability while unit is operating.
  • Separated air and gas burner chamber.
  • Symmetrical placement of ignition tube.
  • Hinged control compartment provides ease in servicing.
  • 3-piece independent compartment cover.
  • ABS plastic air intake collar for connection to 4” PVC/DWV pipe.

 

Product Features Comparison Chart

HL3

DX3

DET3

DES3

Highly Polished Aluminum Reflectors check check check check
Coated Titanium or Aluminized Combustion Chamber check check check check
Coated Aluminized Radiant Tubes check check cross cross
Hot Surface Ignition check check cross cross
Stainless Steel Flexible Gas Connector check check check check
Two-Stage Technology check cross check cross
Interlocking Swaged Tubes check check check check
Stainless Steel Models Available check check cross cross
Reflector End Caps Included check check cross cross
Optional ‘U’ or ‘L’ Configurations Available check check check check

 

BTU Range: 50,000 – 200,000 BTU/h
Lengths: 20-60 ft.
Gas Type: Natural or Propane
Combustion Chamber: Coated Aluminized or Titanium
Radiant Tubes: Hot Rolled Steel
Certification: CSA, IAS
Warranty: 1/2/3 (Components/Tubes/Burner)

 

PRODUCT SPECIFICATIONS
ELECTRICAL
• 120v, 60Hz, 3-wire
• 1.7A starting, 1.1A running
CONTROLS
• Potted circuitry
• 24V thermostat Control
• ABS Plastic Cover
TUBE CONSTRUCTION
• As shown at left
• 4″x10′ 16 ga. construction
• Labor saving, interlocking swaged tube design
REFLECTORS
• Highly polished aluminum
• 0°-45° rotatable angle
IGNITION / SENSE
• Direct spark ignition
• Flame rod sense
VENTING
• 4″ single vent
• 6″ common vent (with thermostat)
GAS CONNECTION
• 1/2″ NPT flexible connector
GAS PRESSURES
• MAN. -3.5″ NAT or 10.0″ LP
• MIN. -5.0″ NAT or 11.0 LP
• MAX. -14.0″ NAT or 14.0″ LP
COMBUSTION AIR
• Equipped for ducted air intake from roof or sidewall
KIT CONTENTS
• All hangers & couplers
• Turbulator baffle(s)
BTU Range: 50-200 MBH
Lengths: 20-60 Ft.
Gas Type: Natural or Propane
Combustion Chamber: Coated Aluminized or Titanium
Radiant Tubes: Hot-Rolled Steel
Certification: CSA, IAS
Limited Warranty: 1-2-3 (Components-Tubes-Burner)
OPTIONAL EQUIPMENT  
“U” or “L” Configurations: Available (RUP, REP)
Stainless Steel Upgrades: Available (SSRAO, SSC, SSB)
24V Controls: Requires optional R8385B Relay
Indicator Lights: Available (IND-LT)
Protective Guards: Available (PG)
Side Shield Extensions: Available (SSE)
Outdoor Approval: Not Available

 

AVAILABLE DES3 MODELS & CLEARANCES

Model #
Gas* MBH Length Weight

Recom. Mtg.Heights

DES3-20-50 N or LP 50,000 21’ – 8” 120# 9’ to 14’
DES3-20-60 N or LP 60,000 21’ – 8” 120# 10’ to 15’
DES3-20-75 N or LP 75,000 21’ – 8” 120# 11’ to 18’
DES3-30-50 N or LP 50,000 31’ – 4” 160# 10’ to 15’
DES3-30-60 N or LP 60,000
31’ – 4” 160# 11’ to 18’
DES3-30-75 N or LP 75,000
31’ – 4” 160# 12’ to 20’
DES3-30-100 N or LP 100,000
31’ – 4” 160# 13’ to 23’
DES3-40-50
N or LP 50,000 41’ – 0” 190# 11’ to 18’
DES3-40-60 N or LP 60,000 41’ – 0” 190# 11′ to 18′
DES3-40-75 N or LP 75,000 41’ – 0” 190# 12′ to 20′
DES3-40-100 N or LP 100,000 41’ – 0” 190# 13’ to 23’
DES3-40-125 N or LP 125,000 41’ – 0” 190# 14’ to 25’
DES3-40-150 N or LP 150,000 41’ – 0” 190# 15’ to 27’
DES3-50-100 N or LP 100,000 50’ – 8” 235# 15’ to 27’
DES3-50-125 N or LP 125,000 50′ – 8″ 235# 15′ to 27′
DES3-50-150 N or LP 150,000 50’ – 8” 235# 16’ to 30’
DES3-50-175 N or LP 175,000 50’ – 8” 235# 17’ to 35’
DES3-50-200 N or LP 200,000 50’ – 8” 235# 18’ to 40’
DES3-60-125 N or LP 125,000 60 ‘- 4″ 265# 16′ to 30′
DES3-60-150 N or LP 150,000 60’ – 4” 265# 17’ to 35’
DES3-60-175 N or LP 175,000 60’ – 4” 265# 17’ to 35’
DES3-60-200 N or LP 200,000 60’ – 4” 265# 18’ to 40’
MountingAngleChart
* Specify natural (N) or propane (LP) gas.** Recommended mounting heights are provided as a guideline. Actual conditions may dictate variations from the above data.
DES3_cc_chart
Always maintain the published clearances to combustibles.Clearances published in DES3 Series manual and on warning label supersede data shown here.Place signs where necessary in accordance with ANSI Standards.

 

 

DES3 Series

LBDES3_DES3-Series-Brochure-10-11.th liogt3_manual.th des3_manual.th
Brochure General Manual DES3 Insert Manual
des3_spec.th lpkth_7-13.th LIOTH_Tube-Heater-Precheck-8.5x11_1-13.th
Submittal
Packing List Application Guidelines

 

 

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