4
INITIAL CONTROL START-UP
• Whenever the BCP-3 is powered up, it will display the software version number and then the current operating parameters. Each
display will remain on the screen approximately 5 seconds. If the parameters are correct, there is no need to make any adjust-
ments.
• Once the parameters have been set for a particular application, they will be retained in memory and will not need to be reset.
• Note that if you do change an operating parameter, you will need to reset all the settings (shown on chart on next page).
• An operating parameter can only be changed when it is being displayed in the start-up sequence. To restart the sequence it is
necessary to remove power to the BCP-3 and then power it again.
• Set the operating parameters as described in sequence below:
°F or °C - Fahrenheit or Celsius Temperature Operation Default is °F
• If the display shows °F then the BCP-3 will operate in Fahrenheit degrees.
• If the display shows °C then the BCP-3 will operate in Celsius degrees.
• To change the temperature operation, hold down the center button while pushing either the UP or DOWN button to toggle
between the displays of °F and °C.
• When the correct temperature operation is selected, release the buttons and wait approximately 5 seconds.
b_1, 2, 3, or 4 - Output selection Default is b_3
• If the display shows b_1 then the BCP-3 will control 1 On/Off Boiler and a System Pump.
• If the display shows b_2 then the BCP-3 will control 2 On/Off Boilers and a System Pump.
• If the display shows b_3 then the BCP-3 will control 3 On/Off Boilers.
• If the display shows b_4 then the BCP-3 will control 1 Lo/Hi Boiler and a System Pump.
• To change the boiler output selection, hold down the center button while pushing either the UP or DOWN button to toggle
between the displays the boiler outputs.
• When the correct boiler output is selected, release the buttons and wait approximately 5 seconds.
Minimum Water Temperature Default is 140°F
• The display will next show the minimum water temperature setting. The BCP-3 can not compute a calculated water temperature
below this setting, and can not have a set point value below this.
• DO NOT lower this below the default setting of 140°F without contacting your Weil- McLain representative.
• To change the minimum water temperature, hold down the center button while pushing either the UP button to increase the value,
or the DOWN button to decrease the value.
• When the desired minimum water temperature is selected, release the buttons and wait approximately 5 seconds.
DEFAULT SETTINGS
Settings shown in instructions have been selected by Weil-McLain and will provide proper operation for many
installations.
• The BCP-3 comes equipped with default settings which are a good starting point for most installations.
• After the start-up routine has completed, the display will show the system water temperature.
• To display the other settings (see chart next page), repeatedly press the center PRESS TO READ button.
• A setting can only be adjusted when it is being displayed.
• Use the UP and DOWN buttons to adjust the setting.
• The display will always revert back to the actual system water temperature after 30 seconds.
• The default Fine Tune is 0°. This means the system target temperature will be 100°F at an outdoor temperature of 70°F as shown
on the reset curves on the front page.
• The default Outdoor Starter setting is 60°F. When the outdoor temperature is above the Outdoor Starter setting, the BCP-3 will
not give heat.
• The default Reset Ratio is curve 7 or 1:1 (see chart
on first page). This ratio should be a good
starting point for applications with baseboard or
radiators. If the application has radiant heat, a
lower numbered reset ratio curve should be
selected.
• The default Reaction Time is 5 minutes. This
makes the minimum run time for any stage 2
1
/
2
(or
half the reaction time).
Press to scroll
through settings
Default Display:
System Water
Temperature
OUTPUT
UP
DOWN
SELECT SETTING
Press and
hold to adjust
