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4    

A70, A72 Technical Bulletin 

Notes 

 

www.penncontrols.com 

 

® Johnson Controls and PENN are registered trademarks of Johnson Controls in the 

United States of America and/or other countries. All other trademarks used herein are the property  

of their respective owners. © Copyright 2019 by Johnson Controls. All rights reserved. 

Содержание PENN A70 Series

Страница 1: ...ntrol in the NEMA 1 enclosure must be located in areas protected from the direct effects of weather If the control is directly exposed to the weather or other wet environments it must be equipped with an outdoor enclosure Mount the control on a flat surface or panel board by two screws or bolts through the holes in the back of the case Controls are supplied without brackets unless specified The st...

Страница 2: ...acts are LINE M1 The action of the main contacts are shown on the cover label Figure 6 shows a typical wiring hookup Where it is desirable for the user to increase or decrease the DIFFERENTIAL ONLY external adjusting knob is supplied on differential screw as shown in Fig 4 Knob is provided with stops and factory assembled to permit change only within a specified range External adjusting knob may b...

Страница 3: ...3 Checkout Procedure The operating point of the control should be confirmed by an accurate thermometer Before leaving the installation observe at least three complete operating cycles to be sure that all components are functioning correctly If the control setting is outside the normal operating range of the controlled device the operation of the control should be simulated by actuating the contact...

Страница 4: ...Johnson Controls and PENN are registered trademarks of Johnson Controls in the United States of America and or other countries All other trademarks used herein are the property of their respective owners Copyright 2019 by Johnson Controls All rights reserved ...

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