Also referred to as a combustion air switch or draft proving switch, this Honeywell 513431 pressure switch closes at -.10" w/c when the combustion or booster motor is running.
The water column pressure of the old switches ranged anywhere from -.12 to -.20". The switch comes with a 6" piece of tubing.
024-27666-000
024-27666-001
025-41003-000
025-41003-000
025-41454-000
02541454000
02427666000
02427666001
02541003000
02541003000
and 324-35972-000.
S1-32435972000; S1-02541454000 (superseded by S1-32435972000); S1-02541003000(superseded by S1-02541454000); S1-02427666001(superseded by S1-02541003000); S1-02427666000(superseded by S1-02427666001)
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