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BCP-8S
AND
BCP-8X
BCP-8S
STEAM SEQUENCING CONTROL
13PSI 35F
Stage A Stage E
SYS
DE GH JK
Stage B Stage F
AUX OUT
HI LO -- OFF
Stage C Stage G
COMB. AIR
STAGE MENU
Stage D Stage H
CUS
ENCLOSED
ENERGY
OUTPUT RATING: 2A, 120VAC.
MANAGEMENT
MAXIMUM 15A TOTAL FOR ALL CIRCUITS
EQUIPMENT
LISTED
INPUT RATINGS: 120VAC 60Hz, 12VA MAX
99RA
DO NOT APPLY ANY VOLTAGE
CAUTION: Risk of Electric Shock.
TO INPUT TERMINALS
PROGRAM RUN
Use Copper Conductors Only.
SENSORS MUST BE GOLD SERIES
PW
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Staging. ..................... . 15 3 Sequence .....................16 4 Control Logic. .................. . 16 Sensor Fault....................16 5 Setting the Control to Factory Defaults .......16 PID Operation ................... 5 Operating Settings . ................ . 17 OSS Operation. .................. 5 Program Change Settings.............17 6 Season. ..................... . 17 Selecting the System Features ........... 6
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Program Switch to restrict access to function changes. This Switch is covered with Enclosure Wiring Cover. Button function is presented on LEDs indicate bottom row of the display. associated relay’s status BCP-8S STEAM SEQUENCING CONTROL 13PSI 35F Stage A Stage E SYS CD EF GH Stage B Stage F AUX OUT HI LO -- OFF Stage C Stage G COMB. AIR BOILER MENU Stage D Stage H CUS ENCLOSED ENERGY OUTPUT RATING: 2A, 120VAC. MANAGEMENT MAXIMUM 15A TOTAL FOR ALL CIRCUITS EQUIPMENT LISTED INPUT RAT
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The BCP-8S is the perfect control whenever multiple boilers are required for steam heating applications. The BCP-8S controls the stages to maintain a precise system set point. The BCP-8S’s control PID algorithm allows it to look at the rate of change in the system. If the system oscillation is minimal, the BCP- 8S will make slow and gradual output adjustments. If the load is changing quickly, the BCP-8S can be set to OSS sequencing where it will react based on load changes.
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The BCP-8S has multiple operating modes that satisfy most steam systems. It can sequence stages to achieve an adjustable Set P oint. Moreover, when used with the 420MOD Interface (389-900-226) it can accept a 4-20mA signal as a set point. The 420MOD must be purchased separately. This gives the BCP-8S the capability of being controlled remotely. heat, by either closing the TSTAT input or opening the SHUTDOWN input, and when the
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features available in the control and give more comfortable heat when needed. The program should consist of the following: The BCP-8S has been designed with Steam heating as the primary purpose. With this in mind, many of the BCP-8S features can be (389-900-226). The BCP-8S can receive an external Set Point as a 4 - 20mA signal from an EMS system using the 420MOD Interface. is slow and requi
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Each of the BCP-8S and BCP-8X consists of three primary enclosure components. enclosed with the Enclosure Wiring Cover for security. The wiring terminals are of the plug-in type to ease installation and removal. components mount on the base. The bottom section of the Enclosure Base contains the wiring chamber with knockouts on the bottom to ease installation. seals the wires from the external environment. It has two screws to hold it to the base and a hole to
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before any takeoffs. on the transducer are not used. class 2 voltage. If the System Sensor cannot sense the correct system pressure being supplied to the building, the BCP-8S will not provide comfortable heat levels. Be sure that it is located on the main supply header before any takeoffs. Outdoor Sensor separately). Seal around
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PWR LN 12 L. N. System Auxiliary 4-20mA Input1 + - 25 26 27 28 located on the common header. Contact the factory for pressure sensor options. 2-conductor cable (Belden #8760 or equivalent). 25 (+) and connect the Black wire to terminal 26 (-). xiliary Outdoor Auxiliary Aux put1 Temp Input2 Inp 7 28 29 30 31 32 33 8S will disable all boilers when the outdoor temperature is above the adjustable Outdoor Cutoff temperature. This fe
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SHUTDOWN y Auxiliary /TSTAT PROVE Input3 /SETBACK 2 33 34 35 36 37 38 EMS input or thermostat). It will only be available when Tstat is selected as the External Input Mode option from the Startup menu on page 1 . TSTAT terminals. TSTAT- 35,36. SHUTDOWN y Auxiliary /TSTAT PROVE Input3 /SETBACK 2 33 34 35 36 37 38 menu on page 1 . input or external time clock). No Day/Night scheduling options will be available with this feature. SETBACK termi
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Stage A Stage B Stage C Stage D Stag 35 4 68 7 910 11 Output A followed by the higher stage of the same boiler and wire it to Stage B. Lo Hi Lo Hi Unit1 Unit2 Stages Stages (389-900-226) using the provided 6-pin phone cable. to the second extension or the420MOD Interface (389-900-226). be to use the 420MOD Interface (389-900-226) to provide a 4-20mA set point signal to the BCP-8S. Ext A Ext B communication problem. Extension B
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-- CONTROL MODE --- ARE YOU SURE? 8.5 psi 45 F Set Point No TGT=9.0 psi EMS 4-20mA Yes ABC ---- LO BACK SAVE BACK SAVE Boiler Menu --- SENSOR TYPE --- Pressure 15psi the Menu button for over three Pressure 30psi seconds. Pressure 100psi Pressure 200psi Pressure 300psi settings the Program/Run Switch must ------ SETTINGS ------ Pressure 0.250MPa be set to Program. Season Winter Pressure 0.600MPa Set Point 9 psi Pressure 1.000MPa EMS SetPoint9
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-- EMS SET POINT -- - OUTDOOR CUTOFF - -- REACTION TIME -- 8.0 psi 60 F 2min [ ] [ ] BACK SAVE BACK SAVE BACK SAVE ----- SET POINT ----- ---- SEASON --- --- PURGE DELAY ---- 8.0 psi Winter 0.0min [ ] Summer [ ] BACK SAVE BACK SAVE BACK SAVE 8.5 psi 45 F - MINIMUM Runtime TGT=9.0 psi 2min ABC [ ] ---- LO BACK SAVE Boiler Menu - STAGE SETTINGS - -- STANDBY DELAY -- Reaction Time 1min 10min Purge Delay 0.0min
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A good practice after performing any Startup menu Can be accessed by holding down the Menu button for over three seconds. adjustments to match the new settings. To be able to change the BCP-8S settings the Program/Run Switch must be set to Program. The switch is located under the Enclosure Wiring Cover for security. The Enclosure Wiring PROGRAM RUN Cover can be securely closed using a padlock. ARE YOU SURE? Hold Button: MENU/ No Yes BACK SAVE de
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- COMB. AIR OUTPUT- No Hold Button: MENU//..../Comb. Air Output Yes BACK SAVE Air Damper or not. PROVE input to check on the status of the Combustion Air Damper. In a failure situation, the message "Wait for Comb. Prove" will display when there is a call for a boiler until Prove is shorted. Comb. Prove Failure PROVE input will be used to check System status instead of the Combustion Air Damper. PROVE input, leave the supplied jumper
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------ SEQUENCE ------- Lo/Hi/Lo/Hi Hold Button: MENU//..../Sequencing Lo/Lo/Hi/Hi BACK SAVE Hi/Hi. Then, the BCP-8S will sequence the lower stages of all Automatic boilers before sequencing the higher stages. higher stage of the lag boiler. --- CONTROL LOGIC--- PID Hold Button: MENU//..../Sequencing OSS BACK SAVE Boiler Min. Run Time. The PID relies on the rate of change in the system pressure. The PID logarithmic calculati
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Can be accessed by holding down the Menu button for over three seconds. PROGRAM RUN To be able to change the BCP-8S settings the Program/Run Switch must be set to Program. The switch is located under the Enclosure Wiring Cover for security. The Enclosure Wiring Cover can be securely closed using a padlock. DO NOT turn power off to the Button: MENU/Season BCP-8S when in off-season. If you do so, the battery will run Summer to show status. down and have to be replaced.
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PROGRAM RUN To be able to change the BCP-8S settings the Program/Run Switch must be set to Program. The switch is located under the Enclosure Wiring Cover for security. The Enclosure Wiring Cover can be securely closed using a padlock. -- STAGE SETTINGS -- Reaction Time 1min Hold Button: MENU// Purge Delay 0.0min Min Runtime 2min Standby Delay 10min Lst Stge Hld 5.0psi Hold Button: MENU///Reaction Time Throttle 2psi
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- LAST STAGE HOLD 0 PSI Hold Button: MENU///Last Stge Hold [ ] ). BACK SAVE turned off. until the system reaches 10 Psi. During that period, the display will show "Hold Until 10 Psi" then, the lead stage will turn off -- THROTTLE RANGE -- 2PSI Hold Button: MENU///Throttle [ ] ). BACK SAVE will be turned on or off. Set Point
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-- LEAD BOILER -- AB Hold Button: MENU////Rotate Mode CD EF call for output. As more output is needed, additional Stages are added. BACK SELECT 1 ), the display will -- LEAD ROTATION -- Time Hold Button: MENU////Rotate Mode Manual FOFO BACK SELECT (FOFO). The automatic rotation is recommended for most applications. If Time Rotation is selected
