Model Numbering Systems
Introduction All Lennox product is set up with a systematic coding system for both model numbers and serial numbers. Unit model number (including any dash numbers) and serial number must always be used when referring a problem to Lennox in regard to repair parts, literature, wiring diagrams, etc. Use of proper unit identification numbers and serial numbers will greatly help in expediting any material required for these products.
Model Numbers Each unit manufactured is a duplication of a particular model. The model is identified by a "model number" which is stamped on the unit nameplate or rating plate. On residential gas and oil furnaces this identification plate is located on the inside of cabinet near the vestibule panel. On other Lennox products the plate is mounted on the outside of unit. The sequence of letters and digits in the Lennox model number reflects specific information about the unit. The figures below analyze two typical model numbers.
HS26-060-1P HS26 is the Series, 060 is the Capacity, 1P (1) is the Dash Number and (P) is the Power Characteristics.
GCS16-090-350-2Y GCS16 is the Series, 090 is the Cooling Capacity, 350 is the Heating Capacity, 2Y (2) is the Dash Number and (Y) is the Power Characteristics.
Numeral Code Numerals denote the following information:
1. The first one or two numerals indicate the series.
G14 - Series 14 gas heating unit
2. A numeral following the letter "D" or "Q" and preceding the dash indicates air movement capabilities in tons.
G14Q3 - Gas heating unit capable of moving 3 tons of air for cooling.
3. The next set of numerals following the dash, indicates thousands of Btuh heating or cooling capacity.
G14Q3-100 - Gas heating unit capable of 100,000 Btuh input.
HS22-311 - Condensing unit capable of approximately 31,000 Btuh cooling capacity.