Controls wiring, Ount, Umidistat – GeneralAire DS20 Elite Steam User Manual
Page 11: Ressure, Witch, Ds-20
Installation, Operating and Maintenance Manual
11
6: Controls Wiring
Mount The Humidistat
Please refer to the installation Instructions included with the Humidistat.
Mount 12500 Air Pressure Switch (DS-20 Only)
Mount Air Flow Switch on a vertical surface. Switch must be oriented vertically with the hose
connections pointed down. Do not mount switch on or in warm air plenum. Use care when
locating mounting holes so as not to damage furnace electronics, fuel lines, combustion chamber,
etc.
Mount Plenum Probes. Select locations on supply and return plenums so length of supplied hose
will be sufficient and does not kink. Drill ¼” hole and insert long end of probe into duct. Use two
sheet metal screws to secure probe.
Connect hoses. Connect hose to supply plenum probe. Trim hose to length and connect to high
pressure inlet toward rear of switch. Connect return plenum probe to low pressure inlet toward
front of switch.