Johnson Controls A25 Series Technical Bulletin Download Page 8 | Manualshive

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A25 Series Warm Air Control with Manual Reset Product/Technical Bulletin

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Summary of Contents for A25 Series

Page 1: ...ntrol in the supply air duct or plenum where a lockout type control is desired or required by local code Figure 1 The A25 Series Warm Air Control with Manual Reset Features and Benefits Trip free Rese...

Page 2: ...ng location refer to Figure 2 3 Using the flange as a template on the duct mark the location for two 1 2 in 13 mm No 10 sheet metal screws 4 Punch or drill both sheet metal screw holes in the duct at...

Page 3: ...ncrease The red to blue circuit opens on temperature increase Refer to Figures 3 and 4 for terminal identification and typical wiring connections When the reset lever is pressed during normal operatio...

Page 4: ...nd the alarm or signal if applicable should activate Note The setpoint at shutdown should equal the approximate duct air temperature 3 Turn the setpoint knob clockwise to the desired setpoint Nothing...

Page 5: ...the sensor above the setpoint or lower the setpoint below the ambient temperature The control should lockout trip To reset after test Lower the temperature at the sensor to 20F 11C below the setpoint...

Page 6: ...the sensor above the setpoint or lower the setpoint below the ambient temperature The control should lockout trip To reset after test Lower the temperature at the sensor to 20F 11C below the setpoint...

Page 7: ...n The A25 is not sensing properly The sensing element may not be extended into the airstream or the sensing element is contacting an object inside of the duct or plenum Insert the sensing element as f...

Page 8: ...8 A25 Series Warm Air Control with Manual Reset Product Technical Bulletin Notes...

Page 9: ...e reset when the temperature drops 20F 11C below the dial setting Sensing Element Bi metal rod and tube construction Shipping Weight Individual pack 1 8 lb 0 8 kg Overpack of 12 units 23 lb 10 4 kg Wi...

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