• 6
different Btu sizes and more than 60
different
configurations to custom design your infrared
heating system
• CSA design certified
• Available in natural and propane gas
• Optional elbows and corner reflectors
• Optional decorative grille
• Sidewall or through the roof venting
• Vented or indirect vented operation
• Includes 36" stainless steel gas connector.
Vacuum
System
• Products of
combustion are pulled through the
combustion chamber for increased radiant efficiency
and greater safety
• No draft hoods, totally enclosed combustion
chamber
• Heavy duty draft inducer assembly with permanently
lubricated, totally enclosed and heavy
duty ball bearing motor for maintenance-free
operation
• 30 second per-purge period before ignition
• Diaphragm air switch for proof of venting
before gas flow and ignition
Burner
System
• Heavy duty cast iron burner
• Reliable direct spark ignition system and 100%
•Gas Shut-Off Safety Control
• Burner inspection sight glass
• Step-opening redundant combination gas valve
for quite ignition and added safety
• Inside or outside air for combustion
• Up to 50 ft. outside combustion air capability
• Diagnostic Monitoring Light System
Radiant
Emitter Tube System
• 4” O. D. heat treated aluminized
steel combusttion
chamber (10’ length)
• Standard highly emissive radiant tubes (10’ lengths)
• Optional aluminized steel radiant tubes (Though
Guy Option)
• 5 year limited warranty on all tubes
• Suitable for horizontal or angle mounting up to 45°
• Up to 75 feet sidewall vent capability
Reflector System
• Highly efficient aluminum reflectors
• Individual reflectors can be rotated up to 45° to
direct heat where needed
• Optional end, corner, U-bend and side extension reflectors
SIS
Dimensions
SIS-Bottom View
Model
Total Tube Length
Overal Dimensions "L" (FT)
SIS-End View
SIS (50)
15'
17' 9"
SIS
(50, 75)
20'
22'
9"
SIS
(50, 75, 100, 125)
30'
32'
9"
SIS
(100,125, 150, 175)
40'
42'
9"
SIS
(125, 150, 175)
50'
52'
9"
Flue Connection: 4" Round for SIS (50-75)
6" Round for SIS (100-175)
Fresh Air Connection: 4" or 6" Round for
SIS (50-75) 6" Round for SIS (100-175)
NOTES: Since straight tubes are always
hotter at the burner end than at the exhaust end, always
observe the minimum recommended mounting heights shown
on the specification sheet for greatest human comfort.
Use SIU series instead of SIS series for spot heating
applications.
