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AA...C2 Differential Air Pressure Switch
Installation Instructions
AA...C2 SPDT Differential pressure switch in pressure and vacuum ranges. The differential pressure acts via the diaphragm
against the force of the setting spring on the microswitch. The pressure switch operates without any auxiliary power.
Gases
Air and non-aggressive gases. Not suitable for natural
gas, propane, butane and other combustable gases.
Switch
SPDT
Switch action
Pressure, vacuum or differential pressure switch.
Contact Rating
5 A resistive, 2.5A inductive @120 Vac
1A @ 12V-48Vdc
Electrical Connection
Screw terminals via 1/2" NPT conduit connection
Enclosure
NEMA Type 4
• Read these instructions carefully.
• Failure to follow them and/or improper installation may
cause explosion, property damage and injuries.
• Installation must be done with the supervision of a
licensed burner technician.
• Check the ratings in the specifications to make sure that
it is suitable for your application.
• Never perform work if gas pressure or power is applied,
or in the presence of an open flame.
• Ensure that the switch is not subjected to vibration during
operation.
Phone: (763) 582-1700 Fax: (763) 582-1799 E-mail: [email protected]
1 ... 4
SPECIFICATIONS
MODELS DESIGNATIONS AND RANGES
Type
Version
AA-C2-4-...
AA-C2-4-1
AA-C2-4-2
AA-C2-4-3
3890 Pheasant Ridge Dr. NE, Suite 150, Blaine, MN 55449 U.S.A.
Maximum Operating Pressure
20 In W.C. (50 mbar)
Ambient / Medium Temperature
+5°F to +140°F (-15°C to +60 °C)
Materials in contact with Gas
Housing:
Switch:
Diaphragm:
Switching contact:
Approvals
UL Listed: File #.MH16628
CSA: Certificate #: 201527
FM Approved: Report J.1.0D6A1.AF
Commonwealth of Massachusetts Approved Product
Approval code G3-0106-191
ATTENTION
• Once installed, perform a complete checkout including
leak testing.
• Label all wires prior to disconnection when servicing.
Wiring errors can cause improper and dangerous
operation
• Verify proper operation after servicing.
• The system must be installed, used, and maintaned to
meet all applicable national and local code requirements
such as but not limited toNFPA 86, NFPA 160,
ANSI Z83.4/ CSA 3.7, ANSI Z83.18/CSA 4.9,
ANSI Z21.13, CSD-1, UL 795, CAN1-3.1, CGA 3.2,
CSA 3.8, CSA B149.1, or CSA B149.3.
Order No.
Setting range
in. W.C
217-333A
0.08 - 0.60
217-334A
0.16 - 1.20
217-336A
0.40 - 4.00
Karl Dungs, Inc
Polycarbonate
Polycarbonate
NBR-based rubber
Silver (Ag)