First digit being the year and the Twenty-first and Twenty-second Digit: Internal Descriptor of design. from First Company SN for future reference. First Digit: 1. Air Handling (Replacement. Second two are the month. A16203. Lettered Model Numbers A model number starting with two or three letters followed by the size of the unit has been used extensively and is current nomenclature policy. Starting in 1984, there was a four digit date code following the serial number that was month and year. First Co, HVAC Equipment, including Ceiling Fan Coil HX Series, Uncased, Horizontal Recessed, 2 Ton, 5kW, Ceiling Fan Coil HX Series, Uncased,.. First Company Service Parts is one of 4 divisions of First Operations. Nomenclature (UK: / n ə ˈ m ɛ ŋ k l ə tʃ ər /, US: / ˈ n oʊ m ə n k l eɪ tʃ ər /) is a system of names or terms, or the rules for forming these terms in a particular field of arts or sciences. model nomenclature 90%+ gas furnace gas furnace model number identification guide digit position 1 2 3 4 5 6, 7, 8 9, 10 11, 12 13 14 * 9 m a e 060 17 14 a 1 Goodman: First two digits of the serial number are the year. First Company heating and air conditioning products including fan coil units, air handlers, and replacement parts. HVAC units are identified by their multiple-character model number that identifies a particular type of unit. Contract Mfg 3. Newer ones are first two equals manufacturing plant #, 2nd two are year and letter in fifth slot is month. MODEL NUMBER NOMENCLATURE. Below you will find a partial explanation of the alphanumeric identification code (aka Model Number Nomenclature). The first letter of the serial number denotes the year of manufacture, based on the listing below. Qty. Month of manufacture is 1st digit of the serial number. ie: 36 div by 12= 3 tons. Add to Cart. Just really wanted to know how to decipher D.O.M. Realize that the air handler was probably manufactured somewhere around 1996-98. Add to Cart. The first two letters designate the model series. (See chart below). 1.5 Ton 5kw Heat Model 19HX-5 Horizontal Recessed Ceiling Fan Coil. Supermarket 2. They supply OEM equipment to all of the major HVAC manufacturers. General Electric: Age is the last 3 digits of the serial number. Supermarket Replacement 5. Custom (Replacement) 8. Figured out the 2.5 ton rating based upon the model number. Will be talking to a First Company rep today, so hopefully I'll be able to post an answer for all to view. Year of manufacture 2nd digit of the serial number. The serial number may be noted on two lines, as below, or one line. A = 1994 B = 1995 C = 1996 D = 1997 E = 1997. F = 1998 G = 1999 H = 2000 J = 2001 K … A16895. Title: Microsoft Word - MODEL NUMBER NOMENCLATURE.docx (See chart below). Btu rating is model number…ie; GMP075-3 (75,000 bonnet input) Compressor is same :serial # 9709088872 (yr1997 wk 09) Tonnage is model # CK361C The first two numbers after the CK (letters) divided by 12 is tons. PeerlessPrior to 1984 there was not a date code included as part of the serial number. They supply OEM equipment to all of the major HVAC manufacturers. Custom (New) 4. They are located in Dallas, Tx at 214-388-5751. ... 006-PBC7-15IFC Pump Module for CDXQ Series Fan Coil Units. Air Handling (New) 9. Clean Room 6. The third letter is normally used for the unit configuration: vertical upflow (V), horizontal (H), and down discharge (D). They are located in Dallas, Tx at 214-388-5751. General Electric: Age is the last 3 digits of the serial number. Description: Eight (8) character serial number begins with one (1) letter followed by one (1) numerical digit and then another letter digit and ends with five (5) numerical digits. Harold Hammer at Tech Support (ext#5) will answer your questions. Harold Hammer at Tech Support (ext#5) will answer your questions. Qty. First digit being the year and the First Company Service Parts is one of 4 divisions of First Operations.