Crown Boiler 24-03 User Manual

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placement.  The 14 gauge mounting bracket must 

be attached to the jacket first using four (4) #8 x ¾” 

drill point sheet metal screws.

 

One may find it easier to install some of the conduit 

connectors with their corresponding conduit runs onto 

the RTC back panel before mounting to the bracket.  

The actual controller can and should be removed from 

the back panel during the mounting process.  This 

will eliminate the potential for accidental damage to 

the controller.  The RTC back panel is mounted onto 

the bracket with (4) #8-32 x ½” type F, Phillips Pan 

head screws supplied with the controller.  The middle 

3 rear knockouts should be used before utilizing the 5 

knockouts exiting the bottom of the control.  Depending 

on the final configuration, most of the controller 

connections could be used.  Typically, the return sensor, 

actuator control and boiler pump exit the rear of the 

controller.

 

Wire the RTC controller to the various components 

as shown below.  The “Mix” and “Outdoor” sensor 

are optional and must be connected if outdoor reset 

function is desired.  The outdoor reset function on 

this controller cannot be used in a multiple boiler 

application.  A boiler sequencer must be used when an 

outdoor reset feature is required in a multiple boiler 

application.