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Welcome to Space-Ray - Infrared Gas Heaters


Infrared Radiant Heating for Commercial / Industrial Applications

commercial / industrial > products > tube heater - LTU Series
LTU Series Tube Heater
Specifications

Features

  • 19 different Btu sizes to custom design your radiant heating system
  • Factory pre-assembled for easy and low cost installation
  • Pull-through system for increased radiant efficiency and more uniform tube temperature
  • Highly efficient aluminum reflectors designed for more uniform floor level radiant energy distribution
  • Single stage or two stage modulation input
Pull-Through System
  • Pull-through system -- the products of combustion are pulled through the combustion chamber for increased radiant efficiency and greater safety
  • CSA certified for vertical or horizontal venting
  • CSA certified for maximum 75 ft. horizontal sidewall venting
  • Draft inducer is equipped with permanently lubricated, totally enclosed, fan cooled and heavy duty ball bearing motor for maintenance free operation
  • Draft inducer assembly can be used for through- the-roof-venting or rotated 45 degrees or 90 degrees for horizontal venting
  • No draft hoods, totally enclosed combustion chamber

Burner System

  • One piece cast iron burner with stainless steel flame retainer
  • 10 year limited warranty on burner
  • Inside or outside air for combustion
  • CSA certified for 50 ft. outside fresh air inlet duct
  • 4" O.D. standard fresh air inlet duct opening for LTU40-LTU75; 6" for LTU80-LTU250
  • Burner inspection sight glass
  • State-of-the-art step opening combination gas valve for quiet ignition
  • Diaphragm Air Proving Switch -- a safety device for proof of venting before gas flow and ignition
  • Spark ignition system with 100% Gas Shut-Off Safety Control (30 second pre-purge)
  • 36" Stainless Steel flexible gas connector included with control box
Radiant Emitter Tube System
  • All radiant emitter tubes are 16 gauge calorized steel -- 3" for LTU40-LTU75 and 4" for LTU80-LTU250
  • Body assembly for some models is 15' long; other models require the use of additional 5' and 10' body - Titanium alloy Alumi-Therm and aluminized steel emitter tubes are calorized for long life and high radiant efficiency
  • The calorization process produces an emitter tube which is highly radiant absorptive on the interior and highly radiant emissive on the exterior
  • 5 year limited warranty on the emitter tube

Reflector System
  • Fully factory assembled on tube body
  • Highly efficient aluminum reflectors
  • Reflector ends are enclosed for maximum radiant heat output and minimum convection loss
  • Easy to use mounting brackets
  • Suitable for horizontal or angle mount up to 45 degrees
Other
  • Monitoring light system for on line diagnosis
  • Uncomplicated maintenance access
  • Quick slip-on electrical connectors
  • Quick 115 volt terminal block connection
  • 1/2" MPT gas inlet connection
  • CSA approved for direct vented or indirect vented operation
  • Please note that this heater is NOT for residential use

Infrared Radiant Gas Tube Heater: LTU series
click pic for enlarged view

 

LTU Series
Product Brochures:

 

Installation & Operating
Instructions:

Other Major Types of
Space-Ray Tube Heaters:

Cold Blocker

LTS Series

ETS / ETU Series

PTS / PTU Series

RSTP Series

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Model Selection
MODEL
SINGLE STAGE BTU/HR INPUT
TWO STAGE
BTU/HR HIGH INPUT
BTU/HR LOW INPUT
LTU 40
40,000
40,000
25,000
LTU 50
50,000
50,000
31,500
LTU 60
60,000
60,000
38,000
LTU 75
75,000
75,000
50,000
LTU 80
80,000
80,000
50,000
LTU 90
90,000
90,000
57,000
LTU 100
100,000
100,000
63,000
LTU 110
110,000
110,000
69,500
LTU 120
120,000
120,000
76,000
LTU 125
125,000
125,000
80,000
LTU 130
130,000
130,000
82,000
LTU 140
140,000
140,000
88,500
LTU 150
150,000
150,000
95,000
LTU 160
160,000
160,000
100,000
LTU 175
175,000
175,000
110,000
LTU 180
180,000
180,000
114,000
LTU 200
200,000
200,000
125,000
LTU 225
225,000
225,000
N/A
LTU 250 
250,000
250,000
N/A

* Indicate model number based on Btu/hr input (e.g. 100,000Btu/hr), emitter length (e.g. 30 ft.) . Control suffix (e.g. Natural Gas single stage input ) . The unit selection would be LTU100-30-N5.

Control Suffix Type of Gas Control Option Description
N5/ L5 Natural / Propane Single Stage Gas Valve- Single Stage Input
N7 / L7 Natural / Propane Two Stage Gas Valve- Modulating Input – High/Low Fire

 

Dimensions

MODEL
INPUT
MINIMUM MOUNTING HEIGHT
TOTAL TUBE LENGTH
OVERALL DIMENSION "L"
SHIPPING WEIGHT Lbs.**
BTU/HR
LTU40-30
40,000
10'
30'
16' 10"
138
LTU50-30
50,000
11'
30'
16' 10"
138
LTU60-30
60,000
12'
30'
16' 10"
138
LTU75-30
75,000
13'
30'
16' 10"
138
LTU80-30
80,000
13'
30'
17' 6-1/2"
191
LTU90-30
90,000
13'
30'
17' 6-1/2"
191
LTU100-30
100,000
13'
30'
17' 6-1/2"
191
LTU110-30
110,000
14'
30'
17' 6-1/2"
191
LTU120-30
120,000
14'
30'
17' 6-1/2"
191
LTU125-30
125,000
14'
30'
17' 6-1/2"
191
LTU130-30
130,000
14'
30'
17' 6-1/2"
191
LTU125-40
125,000
14'
40'
22' 6-1/2"
246
LTU130-40
130,000
14'
40'
22' 6-1/2"
246
LTU140-40
140,000
15'
40'
22' 6-1/2"
246
LTU150-40
150,000
15'
40'
22' 6-1/2"
246
LTU160-40
160,000
15'
40'
22' 6-1/2"
246
LTU175-40
175,000
16'
40'
22' 6-1/2"
246
LTU180-50
180,000
18'
50'
27' 7"
284
LTU200-50
200,000
18'
50'
27' 7"
284
LTU225-50
225,000
20'
50'
27' 7"
293
LTU250-50
250,000
20'
50'
27' 7"
293
** Hanging weight is 80% of shipping weight
   
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    Supply Requirement
GAS AND ELECTRICAL SUPPLY REQUIREMENTS

LTU40--175
GAS TYPE
BURNER PRESSURE
SUPPLY PRESSURE
VOLTAGE
AMPS
IGNITION TYPE
Minimum
Maximum
NATURAL

3.5" W.C.

5" W.C.

14" W.C.

120 VAC

60 HZ
2.6

DIRECT SPARK
PROPANE

10" W.C.

11" W.C.

14" W.C.

LTU150--250
NATURAL

3.5" W.C.

7" W.C.

14" W.C.

120 VAC

60 HZ
2.6
DIRECT SPARK
PROPANE

10" W.C.

12" W.C.

14" W.C.
  • NOTE: For all installations higher than 2000 ft. above sea level please consult the factory regarding recommended derating of heaters.

    Clearance Information
MINIMUM CLEARANCE TO COMBUSTIBLES

MODEL SIDE

CEILING*

BELOW ENDS mounted at 45° angle
FRONT REAR

LTU40, LTU50

 24" 6" 40" 30" 48" 12"

LTU60, LTU75

24" 6" 60" 30" 48" 12"

LTU80, LTU90

52" 6" 84" 30" 52" 12"

LTU100

66" 6" 88" 40" 66" 20"

LTU110, LTU120, LTU125, LTU130

66" 6" 101" 40" 66" 20"

LTU140, LTU150, LTU160, LTU175

84" 6" 106" 48" 84"   24"

LTU180, LTU200, LTU225, LTU250

 84" 18"

132"**

 48" 84" 24"

NOTE: The clearances specified above must be maintained to combustibles and other materials that may be damaged by temperatures 90ºF above ambient temperature. Clearances to combustibles are posted on the reflector near the control end of the heater. In locations used for storage of combustible materials where they may be stacked below the heater, NFPA 54 requires that the installer must post signs that will "specify the maximum permissible stacking height to maintain the required clearances from the heater to combustibles".

* When used indirect vented, the clearance to the ceiling from the top of the exhaust hood must be 12" for LTU40--LTU75, 18" for LTU80--LTU175, and 24" for LTU180--250.

**72" clearance 20’ downstream from the Control Box

NOTE: Consult the factory if reduced clearances are required.

To request a quote or if you need additional information, please call Space-Ray toll free at 800-438-4936 or send us an email.

Besides this Commercial / Industrial Infrared gas heating product line, other Space-Ray divisions include: poultry, Construction & Garage

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International Manufacturer of Infrared Radiant Gas Heaters

 

 
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