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Installation Instructions

Johnson Controls A19BAC, Installation Instructions

The Johnson Controls A19BAC is a reliable HVAC product designed to regulate temperature effectively. Ensure a seamless installation with the provided Installation Instructions manual. Download the user manual for free from our platform 88.208.23.73:8080, offering a comprehensive guide to optimize your product's performance.

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Controls Group

507 E. Michigan Street
P.O. Box 423

Published in U.S.A.

Milwaukee, WI 53202

www.johnsoncontrols.com

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A19BAC, A28AA Installation Instructions

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Summary of Contents for A19BAC

Page 1: ...R and B circuit opens Figure 6 illustrates the operation of the A28AA On a temperature increase the circuit between R and Y of the low stage switch RYL closes Simultaneously the circuit between R and B RBL opens On a further increase in temperature the high stage switch operates and closes RYH while simultaneously opening RBH The reverse sequencing takes place on a temperature fall Installation Mo...

Page 2: ...atings exceed ratings shown on the thermostat s cover label See Figs 4 through 11 for typical wiring applications Note Use terminal screws furnished 8 32 1 4 in binder head Substitution of other screws may cause problems in making proper connections Checkout Procedure Before leaving the installation observe at least three complete operating cycles to be sure that all components are functioning cor...

Page 3: ... 22 0 22 0 22 0 Pilot Duty 125 VA 24 to 277 VAC 125VA 24 to 600 VAC Max connected load not to exceed 2000 VA Disconnecting means and overload protection as required Fig 4 A19BAC typical heating control circuit Fig 5 A19BAC typical ventilating or cooling control circuit Fig 6 Switch action of the A28AA two stage control RBH RYH indicate HI TEMP RBL RYL indicate LO TEMP D is the differential between...

Page 4: ...Controls Group 507 E Michigan Street P O Box 423 Published in U S A Milwaukee WI 53202 www johnsoncontrols com 4 A19BAC A28AA Installation Instructions ...

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