Weil-McLain BCP-3 manual Stage Menu Options, SET /Set Point/Out. Reset/Min. Tgt, Settings/Stage

BCP-3 Installation and Operation Manual

Minimum Target (Available when Startup Control Mode = Outdoor Reset)

Options: From 70ºF/21ºC to 170ºF/77ºC	Default: 140ºF/60ºC	Min Target:
SET /Set Point/<Out. Reset>/Min. Tgt
		140 F
• The Minimum Target Temperature must be set to the boiler manufacturer’s specification.

The BCP-3 will calculate the Target based on the Outdoor temperature, the Reset Ratio, and the Offset value. The BCP-3 will control the boiler to hold the higher of either the calculated temperature or the Minimum Target Temperature.

• The Minimum Target Temperature must be at least 20°F lower than the Maximum Temperature (See next setting).

Maximum Target (Available when Startup Control Mode = Outdoor Reset)

Options: From 90ºF/38ºC to 240ºF/116ºC	Default: 200ºF/93ºC	Max Target:
SET /Set Point/<Out. Reset>/Max. Tgt		200 F

•This is the highest Target Temperature the BCP-3 will circulate through the heating system.

•When using a radiation system, it should be set according to the tubing or floor manufacturer’s specification.

•The Maximum Temperature must be at least 20°F higher than the Minimum Temperature.

Stage Menu Options

/<Settings>/<Stage>

This menu is only available when multiple stages or multiple boilers are selected as the Output Mode from the Startup Menu.

Reaction Time: 5m

			Purge	Delay:
--STAGE SETTINGS-			1.0m
Reaction		2m
Purge	0.0m		Minimum Runtime:
Min. Runtime		2m
			2m
Lead	Output	1
Rotate	Time
<Back>			Lead	Boiler:
			Output 1
Rotation	Period:		Lead	Rotation:
			Time
24hrs
			Manual

Reaction Time		Reaction Time:
Options: 1 to 10 minutes	Default: 2 minutes	2m
SET /<Settings>/<Stage>/Reaction

•It is the amount of time it takes a single stage to affect the system.

•After the BCP-3 turns on a stage trying to meet a set point, it will not turn on another stage until the reaction time has elapsed. Then, it will recalculate if an additional stage is need.

•To determine the optimum time, in a heating system start with a hot system. Then, turn on a single stage and calculate how long it takes until the system begins to respond to that stage by rising an additional 2°F. That period should be set as the Reaction Time.

Purge		Purge Delay:
Options: 0.0 to 10 minutes	Default: 1.0 minutes	1.0m
SET /<Settings>/<Stage>/Purge

•Most large units must go through a purge cycle before they are brought on line.

•When the BCP-3 activates a unit (the lowest firing stage on a boiler), it does not start to calculate its output until the Purge Delay is over. This allows the boiler to fully come on and begin producing output.

•The Purge Delay helps prevent short cycling of newly activated boilers. Once the lowest boiler stage is activated, it MUST run through the entire Purge Delay period before starting the Reaction Time calculation..

•The Purge Delay setting MUST be set to the time required by the boiler's manufacturer specification.

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