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Karl Dungs, Inc.
524 Apollo Drive,Suite 10 Lino Lakes, MN 55014 U.S.A.
Phone: (651) 792-8912 Fax: (651) 792-8919 E-mail: info@karldungsusa.com
A2-A2 Installation Manual -P/N 80107 -Ed. 01/09
Maximum Operating Pressure
7 PSI (500 mbar)
Ambient / Medium Temperature
-40 °F to +140 °F (-40 °C to +60 °C)
Materials in contact with Gas
Housing: Polycarbonate
Switch: Polycarbonate
Diaphragm: NBR-based rubber
Switching contact: Silver (Ag)
Approvals
UL Listed: File No.MH16628
CSA: Certificate: 201527
FM Approved: Report J.1.0D6A1.AF
Commonwealth of Massachusetts Approved Product
Approval code G3-0106-191
Gases
Air and non-aggressive gases only. Not suitable for natural
gas, propane, butane or other combustable gases.
Switch Type
SPDT
Switch Action
Pressure, vacuum or differential pressure switch.
Contact Rating
5 A resistive, 3 A inductive @120 Vac
1A max. @ 24 Vdc
Electrical Connection
Screw terminals via 1/2” NPT conduit connection
Enclosure Rating
NEMA Type 4
AA...A2 Differential Air Pressure Switch
Installation Instructions
SPECIFICATIONS
AA...A2 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.
ATTENTION
• Read these instructions carefully.
• Failure to follow them and/or improper installation may
cause explosion, property damage and injuries.
• The system must meet all applicable national and local
code requirements such as but not limited to the follow
ing fuel gas codes: NFPA 54, IFGC (International Fuel Gas
Code), or CSA B149.1 (for Canada) or the following
equipment codes and standards: NFPA 86, NFPA 86,
ANSI Z83.4/CSA 3.7, ANSI Z83.18/CSA 4.9, ANSI
Z21.13, CSD-1, UL 795, CSA B149.1, or CSA B149.3.
• Installation must be done with the supervision of a
licensed burner technician.
• Check the ratings in the specications to make sure that
they are 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.
• 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.
MODELS DESIGNATIONS AND RANGES
Setting range
in. W.C
0.16 - 1.2
0.4 - 4
2 - 20
12 - 60
0.16 - 1.2
0.4 - 4
2 - 20
12 - 60
Order No.
217-060A
217-061A
217-062A
217-063A
217-329A
217-330A
217-331A
217-332A
Version
AA-A2-4-2
AA-A2-4-3
AA-A2-4-5
AA-A2-4-6
AA-A2-6-2
AA-A2-6-3
AA-A2-6-5
AA-A2-6-6
Type
AA-A2-4-...
AA-A2-6-..
Description
Hose connection
Hose connection
Hose connection
Hose connection
Threaded connection
Threaded connection
Threaded connection
Threaded connection
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