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DX3(L) Series: Premium, Single Stage Tube 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

DX3(L) Series: Premium, Single Stage Tube Heater

 

Packed with quality features, the DX3 represents the highest in quality, single-stage, low intensity tube heaters.Performance is enhanced through the use of a specially designed stainless steel burner and black coated titanium stabilized and/or aluminized coated steel radiant tube exchangers. The DX3 Series offers superior low intensity heat, performance and longevity. V3_tubehtr_0

 

 

FeaturesSpecificationsLiteratureParts & AccessoriesFAQBuy

Specific Features

Tube-Features
  • 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: 20-80 ft.
Gas Type: Natural or Propane
Combustion Chamber: Black Coated Aluminized or Titanium
Radiant Tubes: Black Coated Aluminized Steel
Certification: CSA, IAS, CE (GTS)
Warranty: 1/5/10 (Components/Tubes/Burner)

 


 

PRODUCT SPECIFICATIONS
ELECTRICAL
• 120v, 60Hz, 3-wire
• 4.8A starting, 1.1A running
CONTROLS
• Pre-purge
• Potted circuitry
• 120V thermostat control
TUBE CONSTRUCTION
• As shown at left
• 4″x10′ 16 ga. construction
• Labor saving, interlocking swaged tube design
REFLECTORS
• Highly polished aluminum
• End caps included
• 0°-45° rotatable angle
• Tension springs
IGNITION / SENSE
• Hot surface ignition
• Flame rod sense
VENTING
• 4″ single vent
• 6″ common vent (single t-stat)
• SK caps on 200 MBH models
GAS CONNECTION
• 1/2″ NPT ball valve/inlet tap included
• 24″ stainless steel flexible connector included
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
• Reflector end caps
• Turbulator baffle(s)
BTU Range: 50-200 MBH
Lengths: 20-80 Ft.
Gas Type: Natural or Propane
Combustion Chamber: Coated Aluminized or Titanium
Radiant Tubes: Coated Aluminized Steel
Certification: CSA, IAS, CE (GTS)
Limited Warranty: 1-5-10 (Components-Tubes-Burner)
OPTIONAL EQUIPMENT  
“U” or “L” Configurations: Available (RUP, REP)
Stainless Steel Upgrades: Available (SSTRAO, SSFWAO)
24V Controls: Available (24VAO)
Indicator Lights: Standard
Protective Guards: Available (PG)
Side Shield Extensions: Available (SSE)
Outdoor Approval: Available (OD-KIT)

 


 

 

AVAILABLE DX3 MODELS & CLEARANCES

Model #
Gas* BTU/H Length Weight

Recom. Mtg.Heights

DX3-20-50 N or LP 50,000 21’ – 9” 120# 9’ to 14’
DX3-20-60 N or LP 60,000 21’ – 9” 120# 10’ to 15’
DX3-20-75 N or LP 75,000
21’ – 9” 120# 11’ to 18’
DX3-30-50 N or LP 50,000 31’ – 5” 160# 10’ to 15’
DX3-30-60 N or LP 60,000 31’ – 5” 160# 11’ to 18’
DX3-30-75 N or LP 75,000 31’ – 5” 160# 12’ to 20’
DX3-30-100 N or LP 100,000 31’ – 5” 160# 13’ to 23’
DX3-40-50 N or LP 50,000 41’ – 1” 190# 11’ to 18’
DX3-40-60 N or LP 60,000 41’ – 1” 190# 11’ to 18’
DX3-40-75 N or LP 75,000 41’ – 1” 190# 12’ to 20’
DX3-40-100 N or LP 100,000 41’ – 1” 190# 13’ to 23’
DX3-40-125 N or LP 125,000 41’ – 1” 190# 14’ to 25’
DX3-40-150 N or LP 150,000 41’ – 1” 190# 15’ to 27’
DX3-50-100 N or LP 100,000 50’ – 9” 235# 15’ to 27’
DX3-50-125 N or LP 125,000 50’ – 9” 235# 15’ to 27’
DX3-50-150 N or LP 150,000 50’ – 9” 235# 16’ to 30’
DX3-50-175 N or LP 175,000 50’ – 9” 235# 17’ to 35’
DX3-50-200 N or LP 200,000
50’ – 9” 235# 18’ to 40’
DX3-60-125 N or LP 125,000 60’ – 5” 265# 16’ to 30’
DX3-60-150 N or LP 150,000 60’ – 5” 365# 17’ to 35’
DX3-60-175 N or LP 175,000 60’ – 5” 265# 17’ to 35’
DX3-60-200 N or LP 200,000 60′ – 5″ 265# 18′ to 40′
DX3-70-175 N or LP 175,000 70′ – 1″ 300# 19′ to 42′
DX3-70-200 N or LP 200,000 70′ – 1″ 300# 19′ to 42′
DX3-80-200 N or LP 200,000 79′ – 9″ 330# 20′ to 45′
MountingAngleChart
** Recommended mounting heights are provided as a guideline. Actual conditions may dictate variations from the above data. Stainless steel tube upgrades available.
DX3_cc_chart
Always maintain the published clearances to combustibles.Clearances published in DX3 Series manual and on warning label supersede data shown here.Place signs where necessary in accordance with ANSI Standards.

 

 

DX3 Series

dx3_brochure.th liogt3_manual.th dx3_manual.th
Brochure General Manual DX3 Series Insert Manual
LSDX3_DX3-Submittal_2clr_5-12.th 235523.13_DX3.th lpkth_7-13.th
Submittal
Written Specification Packing List
LIOTH_Tube-Heater-Precheck-8.5x11_1-13.th
Application Guidelines

 

DX3L Series

DX3L Brochure liogt3_manual.th DX3L Insert Manual
Brochure General Manual DX3L Series Insert Manual
DX3L Submittal DX3L written specifications
DX3L Submittal
Written Specification
LIOTH_Tube-Heater-Precheck-8.5x11_1-13.th
Application Guidelines

 

 

COMMON COMPONENTS
Part Description Original
Part Number

Replacement
Part Number

Fan TP-55A TP-55A
Air Pressure Switch See
Pressure Switch
Chart Below
See
Pressure Switch
Chart Below
Circuit Board TP-351A1 TP-351A1
Wire Harness TP-352A TP-352A
Terminal Block TP-329 TP-329
Ignition Device TP-50 TP-50
50-100 MBH Low Stainless Steel Burner (Natural & LP Gas) TP-3072 TP-3072
125-150 MBH Mid Stainless Steel Burner (Nat & LP Gas) TP-201B TP-201B
175-200 MBH High Stainless Steel Burner (Nat & LP Gas) TP-3071 TP-3071
Natural Gas Valve TP-3040 TP-3040
LP Gas Valve TP-3041 TP-3041
120V Yellow Operational Indicator Light TP-328 TP-328
Flame Rod TP-222 TP-222
16″ Tube TP-3080A TP-3380
Combustion Chamber2, 50-125 MBH (Coated Aluminized Steel) TP-26A TP-26A
Combustion Chamber2, 150-200 MBH (Titanium Coated Steel) TP-26B TP-26B
Combustion Chamber2, 75-150 MBH (409 Stainless Steel) TP-26E TP-26E
Radiant Tubes (Coated Aluminized Steel) TP-26A TP-26A
Radiant Tubes (304 Stainless Steel) TP-26D TP-26D
10 Ft. Highly Polished Aluminum Reflector Section3 TP-20C TP-20C
Baffle TP-65I TP-65I

1 Cross Reference Number (on unit): 35-66. Note: This board had an on-board red diagnostic light.
2 Refers to the first 10′ section of tubing downstream of burner.

3 Models with stainless steel upgrades require TP-20D 10 Ft. Reflector Sections.

PRESSURE SWITCHES
BTU/H Range (x1000) 50 65-75 100-125 150-200
Part Number TP-264E TP-264D TP-1264A TP-264F
X-Ref., IS220- -216051F5169 -20051F5170 -25051F5127 -35051F5132
Normal Setting Open Open Open Open

 

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