Справочник Пользователя для Patterson-Kelley MOD-04

 17 

The firing rate of the boiler is controlled by an ex-
ternal analog signal, usually from a multiple boiler 
control.  The boiler turns on and off as directed by 
the external control. 

An operating limit control ensures that the boiler 
temperature does not exceed the set value. 

Refer also to Section 3.12.1B. 

 

 

 

 

 

The diagram shows the RWF40 after switching on 
power.  This condition is called the basic display. 
The actual value and the currently active setpoint 
are shown here.  Manual operation, self-setting, and 
the user, parameter, and configuration levels can be 
activated from here. 

 

The temperature control has three levels of cascad-
ing menus.  They are: 

  USER level, 

  PARAMETER level, and the  

  CONFIGURATION level.   

The following table indicates the menu options 
available from each level.  The options available 
depend on the operating mode of the boiler. 

 

 

  To access the User level from the basic display 

press PGM. 

  Change the setpoint SP1 with     or  .  

  Change to setpoint SP2 or dSP with PGM.

 

  Change the setpoint SP2 or dSP with    or  . 

 

  Return to the basic display with EXIT. 

 

The boiler firing rate can be controlled manually.   

Manual Opera-
tion

EXIT But-
ton

Operating Limit Closed 

Firing Rate Decreasing 

Firing Rate Increasing 

Alarm Relay 
Energized 

Increase 
Value 

Actual Value 

Display (red) 

Setpoint  

Display  

(green) 

Decrease 

Value 

PROGRAM 

Button