Aprilaire 1150 Installation, Operation And Maintenance Manual page 28

fIgURE 22 – Model 1160/1180: Input wiring for Optional 0-10 VDC Signal by Others
IMPORTANT:
LW420 controller board slide switch
S1 positions 1 and 2 are OFF
HIgH HUMIDITy
lIMIT SwITCH
AIRflOw PROVINg
SwITCH
fIgURE 23 – Model 1160/1180: Input wiring for Optional 4-20 mA Signal by Others
IMPORTANT:
LW420 controller board slide switch
S1 positions 1 and 2 are ON
HIgH HUMIDITy
lIMIT SwITCH
AIRflOw PROVINg
SwITCH
28
2-wire shielded
cable with ground
2
+24VDC
Enable
2-wire shielded
cable with ground
2
+24VDC
Enable
+
-
2-wire shielded cable with ground
30 1 C
Common
Command signal
+
-
2-wire shielded cable with ground
30
1 C
Common
Command signal
SIgNAl by
OTHERS
0-10 VDC
STEAM HUMIDIfIER
FIELD WIRING
TERMINAL BLOCK
90-918
SIgNAl by OTHERS
4-20 mA (input resistance
250 ohms)
STEAM HUMIDIfIER
FIELD WIRING
TERMINAL BLOCK
90-919