Bradford-White Corp BRHHV Manual De Usuario

Page 27

The proportional control used on the Brute 

Magnum has internal circuitry that helps to minimize 
overshoot that can sometimes be associated with 
proportional plus integral (PI) controls.  There 
are three field-selectable integration constants 
(slow, medium and fast), and an off position on the 
proportional control, which are selected with the 
dipswitches on the control (see Figure 14). In most 
cases, this setting will not need to be changed

Off: Switch 1 to ON position and all others to 

OFF.  Setting the control to the “Off” position puts the 
control into proportional only operation. This is not a 
recommended setting for the Brute Magnum.

Slow: Switch 2 to ON position and all others 

to OFF.  This is the slowest integration constant.  It 
allows the Brute Magnum the most time to reach its 
setpoint.  In most cases, this is too slow for Brute 
Magnum installations.

Medium: Switch 3 to ON position and all others 

to OFF.  The integration constant is set to “Medium” 
at the factory, and in most cases, will not need to be 

The throttling range is adjustable between 2°F 

and 30°F (1°C to 17°C).  The range can be set by 
removing the cover of the S350P control and adjusting 
the “THROT RANGE” dial (see Figure 14).

The minimum output setting of the controller is 

0% of full fire.  However, the minimum output of the 
Brute Magnum is limited to 25% of full fire by the 
fan speed controller, to ensure proper operation of the 
Brute Magnum.  If a minimum desired output is higher 
than 25%, the setting can be adjusted up by removing 
the cover of the S350P control and adjusting the Min 
Output dial (see Figure 14). Turning the dial clockwise 
increases the minimum output. In most cases, this 
setting should be left as shipped from the factory.