2.  25,000 BTU per Cell  Cell Halves Edge Seams Folded and Crimped. Individual Cells Welded Together to Form Completed Heat Exchanger Assembly.  20 Gauge Aluminized Steel Heat Exchanger, Optional 409 & 321 Stainless Steel Available.  Heat Exchanger Increases in Width as Cells are Added to Increase BTU Input. Heights and Depth Remain Constant.

3.  20 Gauge aluminized steel tubes, Optional 409 Stainless  Tubes expanded into vestibule, no welding  Heat exchanger expands and contracts evenly which aids in heat exchanger life expectancy  GT - 15 MBH per Tube  GH, GB, GA, GK – 25 MBH per Tube  GU – 50 MBH per Tube  10 Year heat exchanger warranty

4.  Same Burner for Natural or LP Gases  Aluminized Steel Standard, Optional 409 Stainless Steel Available  Burner Halves Spot Welded Between Each Port and Side Seams Crimped  Trane’s Exclusive Stainless Steel “V” Port Protector is Spot Welded Between the Burner Halves

5. 1.) Pilot Ignites Main Burner Next to Pilot Assembly. 2.) Remaining Burners and Carry Over Bar Fill with Gas, First Burner Ignites Carry Over Bar. 3.) The Combination of the Ignited Carry Over Bar and flame crosses over between Burners to Ignite the remaining Burners.

6.  Construction of inshot rack securely holds burners on their centerline so they do not impinge on tube interior surface, a potential cause of premature heat exchanger failure  Attaches directly to the bottom of the tubular heat exchanger assembly  Single orifice (Size 003-120) or multiple orifice (Size 010-040) inshot burner  Direct Spark Ignition  GT – 409 Stainless Steel Standard  GH, GB, GA, & GK Aluminized Steel Standard, Optional 409 Stainless (not available on GU)

8. Model “GT” Size 015-040 Model “GT” Size 003-120 The “GT” 15-40 is becoming the NEW “GH” and the size has been expanded to 010-040.

9.  ETL certified for residential garage installations  Sizes ranging from 30 to 120 MBH  Low profile design ideal for low clearance installations  Over 82% thermal efficiency  20 gauge jacket panels with baked enamel finish  Individual removable self locking louver blades  Left hand access standard, field convertible to Right hand access by flipping the unit over and remounting the hanging brackets

11.  Heavy duty OSHA fan guard  115V Propeller motor wiring enclosed in flexible conduit  Power venter assembly exits through rear of the unit  Open drip proof motor standard  Optional totally enclosed motor  10 Year Warranty on Heat Exchanger, Burners, and Flue Collector  Field convertible to separated combustion

12.  ETL certified for commercial & industrial applications  Sizes from 100 to 400 MBH  83% Thermal efficiency  20 Gauge jacket panels with baked enamel finish  Individual removable self locking louver blades  Direct Spark Ignition  Isolated Control Panel  10 Year Warranty on Heat Exchanger, Burners, and Flue Collector

13.  ETL certified for commercial & industrial applications  Sizes from 100 to 400 MBH  82+% Thermal efficiency  Direct Spark Ignition  Blower Motor is Open Drip Proof as standard. Optional Total Enclosed, Premium OPD and Premium TE  Belt Guard is Standard  4 Point Suspension  10 Year Warranty on Heat Exchanger, Burners, and Flue Collector

14.  ETL certified for commercial & industrial applications  Sizes from 100 to 400 MBH  82*% Thermal efficiency  Direct Spark Ignition  Designed for Dusty, Dirty, Mildly Corrosive Environments and Areas of High Humidity and Slight Negative Pressures  Separates the Units Combustion Process from the Environment in Which the Unit is Installed by Taking Combustion Air from Outside the Contaminated Space  10 Year Warranty on Heat Exchanger, Burners, and Flue Collector

15.  Sizes Ranging from 100 to 400 MBH in 50 MBH increments  Side Access Burner  30 – 100 °F Temperature Rise  82% Efficient  ETL certified for commercial & industrial applications  4 Point Suspension  Field convertible from right to left hand  Field convertible to separated combustion  10 Year Warranty on Heat Exchanger, Burners, and Flue Collector

16.  Bottom Access Burner Drawer  30 - 80 ° F Temperature Rise  80% Efficient  ETLc Certified  High Limit has Spring Loaded Assembly to Insure Contact with Heat Exchanger Header  Air Flow Prove Switch Accessory Highly Recommended for Safety  Option “K” or “M” for side access

17.  Same Components as the GA Except the Supply Air Fan is Removed from the Unit  Sizes Ranging from 100 to 400 MBH  20 - 90 ° F Temperature Rise  80% Thermal Efficiency  ETLc Certified  Air Flow Prove Switch Accessory Highly Recommended for Safety  4 Point Suspension  Bottom Access Only to Burner Drawer