Carrier 120 Series Installation, Start-Up, And Operating Instructions Manual page 9

FOR HUMIDIFIER, REMOVE THE DUMMY TERMINAL MARKED HUM.
FOR ELECTRONIC AIR CLEANER, REMOVE THE DUMMY TERMINAL MARKED EAC
DNS 0926 Rcv.A
BLUE *Jumper
OIL INPUT : 1.10 USGPH
COOLING CAPACITY : 5 TONS
Fig. 4--Wiring Diagram (120-20) A03165