While Generac’s 20kW Guardian Series automatic standby generators, model numbers 5875 and 6244, are two very similar units, they do have a few slight differences. Each of these generators feature an external main circuit breaker, natural gas or liquid propane operation capabilities, and a low oil pressure shutdown. These units also come pre-wired with a 200 Amp, Service Entrance Rated transfer switch, however, the transfer switch utilized with model number 6244 comes with an aluminum enclosure. Another key difference between these two units pertains to the control panels featured in each. Model number 5875 features the Nexus Controller, whereas model number 6244 features our updated Evolution Controller. As for the fuel pressure required for the optimal performance of the generator, model number 6244 requires 205,000 btu/hour and 3.5-7” water column when operating the unit with natural gas, and 189,000 btu/hour and 10-12” water column for liquid propane. Conversely, model number 5875 requires 206,000 btu/hour and 5-7” water column for natural gas, and 173,880 btu/hour and 10-12” water column for liquid propane use. Further information can be found here: http://www.generac.com/Service/Manu...
, by using each model number to search for the unit’s owner’s manual and additional documentation.
answered 1 year, 1 month ago