Aprilaire 1150 User Manual

Page 21

Control input wiring

The internal controller offers four input control types, which are field adjustable. The factory default control type for Model 1150
is the Automatic Steam Humidifier Control, on-off configuration as shown in

Figure 16.

The factory default control type for Model 1160 is the Automatic Steam Humidifier Control, modulating configuration as shown in
Figure 17.

IMPORTANT: For Model 1150 on/off control, verify that the shunt on the JP2 jumper is placed over the 2 & 3 position. For Model
1160 modulating control, verify that the shunt on the JP2 jumper is placed over the 1 & 2 position.

To change the input control type on Model 1160 to signal by others, see

Figure 18 for a 0-10 VDC signal, and see Figure 19 for a

4-20 mA signal (input resistance 250 ohms).

IMPORTANT: Note the internal controller slide switch S1 settings in each control input wiring diagram.

90-917

FIGURE 17 – Model 1160: Input Wiring for Automatic Steam Humidifier Control (modulating configuration)

90-916

FIGURE 16 – Model 1150: Input Wiring for Automatic Steam Humidifier Control (on/off configuration)

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This manual is related to the following products:

1160