Carrier 58DLA Installation, Start-Up, Operating And Service And Maintenance Instructions page 41

Table 13 – Orifice Size* and Manifold Pressure (In. W.C.) for Gas Input Rate
(Tabulated Data Based On 22,000 Btuh Per Burner, Derated 4 Percent For Each 1000 Ft. (305 M) Above Sea Level)
2 2
A10178
41