Air Switch, Universal, Small Footprint, Range 0.05"-10" WC

Alltemp AS-NS2-0000-03 Universal Air Switch.
The NS2 Switch has a glass-filled polycarbonate housing containing a sensing diaphragm and an integral snap-acting switch with three male 90° quick-connect terminals. The switch can be actuated by a pressure or vacuum air flow or the differential between two air flows. The field adjustable set point range of this switch is 0.10"w.c. to 10.0"w.c. Using the switch accessories contained in this kit, the NS2 switch can be applied to a wide variety of residential and light commercial HVAC applications.

Kit Includes:
• SOLENOID
• 1/4" COMPRESSION × 18" MPT WITH FILTER SCREEN
• 3/16" BARB × 1/8" MPT
• 1/8" MPT × 1/4" COMPRESSION
• 1/8" MPT × 5/16" COMPRESSION
• 1/4" INSERT (FOR PLASTIC TUBE)
• 1/4" DELRIN SLEEVE (FOR PLASTIC TUBE)
TO REVERSE FLOW, REMOVE BRACKET SCREWS AND TURN 180°

Kit Includes:
• (1) FIELD ADJUSTABLE NS2-0000-00 SWITCH
• (1) BLACK SET POINT ADJUSTMENT SCREW
• (1) HEXAGON KEY WRENCH
• (5) COLOUR-CODED SPRINGS
• (4) COLOUR-CODED ORIFICES
• (1) HALF STRAP MOUNTING BRACKET
• (1) ANGLE BRACKET
• (1) MOUNTING SCREW FOR OPTIONAL BRACKETS
• (2) #6-3/8 MOUNTING SCREW FOR OPTIONAL BRACKETS

CROSS REFERENCE
Aprilaire - #4040
General - #990-53
Honeywell - #32001639-002
Skuttle - #A01-0814-148

Operating Range - .10"w.c. to 10"w.c.
Max Pressure Rating - 14"w.c.
Mounting - vertical or custom angle
Operating Temp. - -40°C to 88°C
Sample Line Connections - Black positive, Gray negative
Sample Medium - Air and by-products of
combustion that will not degrade
silicone or polycarbonate

Electrical Rating - 1/10 HP @ 120-277VAC 28VA pilot duty @ 24VAC 125 VA pilot duty @ 120VAC
Contact Arrangement - SPDT
Electrical Connector - Standard Quick Connect terminal 1/4"× 0.032