Weil-McLain BCP-8S User manual

Brand: Weil-McLain

Model: BCP-8S

Category: Water heaters & boilers

Type: User manual

This manual is also suitable for

BCP-8S

STEAM SEQUENCING CONTROL

SYS

AUX OUT

PWR

SYS

AUX

OUT

Stage A

Stage B

Stage C

11 13

Stage E

Stage F

Stage D

6 8 10 12 14

16 18

RS485

13PSI 35F

<AB>

DE GH JK

LO -- OFF

Stage G

Stage H

Auxiliary

Input2

27 29 31 33 35

Outdoor

Temp

20 22 28 30 32 34 36

STAGE MENU

Stage E

Stage F

Stage G

Stage H

Stage A

Stage B

Stage C

Stage D

25 26

System

4-20mA

+ -

37 38

PROVE

PROGRAM RUN

23 24

COMB.

AIR

COMB. AIR

ENCLOSED

ENERGY

MANAGEMENT

EQUIPMENT

LISTED

99RA

CUS

INPUT RATINGS: 120VAC 60Hz, 12VA MAX

Use Copper Conductors Only.

CAUTION:

Risk of Electric Shock.

SENSORS MUST BE GOLD SERIES

OUTPUT RATING: 2A, 120VAC.

MAXIMUM 15A TOTAL FOR ALL CIRCUITS

DO NOT APPLY ANY VOLTAGE

TO INPUT TERMINALS

SHUTDOWN

/TSTAT

/SETBACK

Auxiliary

Input1

Auxiliary

Input3

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BCP-8S

AND

BCP-8X

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

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Part Number 550-100-069/0408

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PID Operation ................... 5

OSS Operation. .................. 5

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Selecting the System Features ........... 6

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Mounting the Enclosure ............... 7

Install the Sensors .................. 8

System Pressure Sensor Installation ....... 8

Outdoor Sensor Installation ............ 8

Wiring ........................ 9

Wiring the Power (Terminals 1, 2) ......... 9

Wiring the Inputs . .................. 9

System Pressure Sensor Wiring (Terminals 25, 26) 9

Outdoor Sensor Wiring (Terminals 29, 30). .... 9

Wiring the Shutdown (Terminals 35, 36) . ..... 9

Wiring the T-STAT (Terminals 35, 36) .......10

Wiring the Setback (Terminals 35, 36) . ..... .10

Wiring the Prove (Terminals 37, 38) ........10

Wiring the Outputs . ................ .10

Wiring the System Output (Terminals 19, 20) . . . 10

Wiring the Comb. Air Damper (Terminals 23, 24) . 10

Wiring the Stages (Terminals 3 to 17) .......11

Connecting to the BCP-8X Panels and 420MOD

Interface ......................11

Selecting the BCP-8X Panel Letter ........11

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Program Change Settings .............14

Startup Sequence .................14

Control Mode ...................14

Sensor Type ....................14

Display Standard. ................ .14

Setting the EMS Set Points (Available in 420MOD only)

Combustion Air Damper Output ..........15

External Input Mode ................15

Burner Type ....................15

Total Boilers ....................15

Staging. ..................... .15

Sequence .....................16

Control Logic. .................. .16

Sensor Fault ....................16

Setting the Control to Factory Defaults .......16

Operating Settings . ................ .17

Program Change Settings .............17

Season. ..................... .17

Set Point (Not Adjustable in EMS Mode) .....17

Outdoor Cutoff Temperature . .......... .17

System Settings ...................17

Program Change Settings .............18

Stage Settings ....................18

Reaction Time ...................18

Purge Delay ....................18

Minimum Runtime .................18

Standby Delay ...................18

Last Stage Hold ..................19

Lead Settings ....................19

Lead Boiler. ................... .20

Rotate Mode . .................. .20

Setback Schedule ..................20

Setback ......................20

Day/Night Schedules ...............21

Set Present Time .................21

Combustion Air Damper Operation .........21

Run-On ......................21

System Exercise . ................ .21

Maintenance .....................21

System & Outdoor Sensor Trim ..........22

History ........................22

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Display . ..................... .22

Pressure Transducer Default Settings and Ranges24

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Program Change Settings .............26

Season. ..................... .26

Set Point (Not Adjustable in EMS Mode) .....27

Outdoor Cutoff Temperature . .......... .27

Setback ......................27

Day/Night Schedules ...............27

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STEAM SEQUENCING CONTROL

SYS

AUX OUT

PWR

SYS

AUX

OUT

Stage A

Stage B

Stage C

11 13

Stage E

Stage F

Stage D

6 8 10 12 14

16 18

RS485

Stage G

Stage H

Auxiliary

Input2

27 29 31 33 35

Outdoor

Temp

20 22 28 30 32 34 36

Stage E

Stage F

Stage G

Stage H

Stage A

Stage B

Stage C

Stage D

25 26

System

4-20mA

+ -

37 38

PROVE

PROGRAM RUN

23 24

COMB.

AIR

COMB. AIR

ENCLOSED

ENERGY

MANAGEMENT

EQUIPMENT

LISTED

99RA

CUS

INPUT RATINGS: 120VAC 60Hz, 12VA MAX

Use Copper Conductors Only.

CAUTION: Risk of Electric Shock.

SENSORS MUST BE GOLD SERIES

OUTPUT RATING: 2A, 120VAC.

MAXIMUM 15A TOTAL FOR ALL CIRCUITS

DO NOT APPLY ANY VOLTAGE

TO INPUT TERMINALS

SHUTDOWN

/TSTAT

/SETBACK

Auxiliary

Input1

Auxiliary

Input3

Connect to Extension panels to

add additional stages or connect

to 420MOD Interface for

external set point.

When connecting Pressure Sensors,

Polarity is observed. However, when connecting

Temperature Sensors, no Polarity is observed.

Prove terminals must be connected for

BCP-8S to operate stages.

Button function is presented on

bottom row of the display.

LEDs indicate

associated relay’s status

Program Switch to restrict access

to function changes. This Switch is

covered with Enclosure Wiring Cover.

System Output controls system components.

Comb. Air relay is

controlled when configured.

Output Relays to manage the stages.

13PSI 35F

<AB>

CD EF GH

LO -- OFF

BOILER MENU

BCP-8S

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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.

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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

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set point.

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The BCP-8S’s alphanumeric digital display names each system parameter in simple English and shows its precise value. The easy to

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commands.

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Rotating the lead stage on a call for output promotes even wear on each boiler. The BCP-8S has three modes of rotation: Manual, FOFO

(First-On/First-Off), or Time. The Time option rotates the lead stage every selected period, from every hour to every 41 days.

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in standby mode will remove it from the rotation sequence. In this mode, the boiler will be used as a backup in large demand periods

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These outputs work with the control logic to operate system and a combustion air damper relays. In addition, a System PROVE input

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one of the same boiler. That will be repeated for each of the lag boilers.

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that the operation of the higher stages turn off the lower operating stages. This can be achieved by selecting 'Single' from the Startup

Staging menu.

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As a stand-alone, the BCP-8S is designed to control eight stages. However, it has the capability of expanding its control to two BCP-8X

extension panels each with eight stages. Thus, the BCP-8S can control a total of up to 24 stages.

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Regardless of the type of applications, Setback is an energy saving feature. The BCP-8S offers a built-in day/night schedule for the

setback period. On the other hand, if external scheduling is to be used, the Setback can be activated using an external signal by shorting

the SETBACK input terminals.

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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 Point.

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.

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heat, by either closing the TSTAT input or opening the SHUTDOWN input, and when the outdoor temperature is below the Outdoor

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period, the BCP-8S will start calculating the Reaction Period. If after a full Reaction Time the control logic foresees additional stages are

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When the BCP-8S PID logic foresees that the system will overshoot, regardless of the current system and target values, it will make sure

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from short cycling.

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setting, as a mean to calculate the number of stages the BCP-8S shall have on at any point. For every Throttle Range below the set point

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55 Psi -1 ---- None A None

50 Psi 0 ---- None ---- A

45 Psi 1 A A B A

41 - 44 Psi 1 ---- A ---- A + B

40 Psi 2 B A + B C A + B

35 Psi 3 C A + B +C D A + B +C

30 Psi 4 D A + B +C + D E A + B +C + D

25 Psi 5 E A + B +C + D + E F A + B +C + D + E

20 Psi 6 F A + B +C + D + E + F ---- A + B +C + D + E + F

15 Psi 7 ---- A + B +C + D + E + F ---- A + B +C + D + E + F

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features available in the control and give more comfortable heat when needed.

The program should consist of the following:

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6(/(&7,1*7+(6<67(0)($785(6

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

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6(732,1725(;7(51$/0$6(732,17

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(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.

3,'25266&21752//2*,&

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results. However, OSS can be used for applications where the load changes frequently and the sequencing must match the load and

its immediate change.

180%(52)67$*(6

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Extension Panels, each with eight stages.

&21752/&20%867,21$,5'$03(5

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$8720$7,&527$7,21$021*%2,/(56

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rotation: Manual, First-On-First-Off, or Timed Rotation. This option automatically rotates boilers every selected period from one

hour to every 41(999 hours) days.

6(7%$&.25'$<1,*+76&+('8/,1*

Two Setback modes are available for the BCP-8S:

 The Day/Night Scheduling provides an adjustable time-based schedule for the Setback.

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,167$//$7,21

Each of the BCP-8S and BCP-8X consists of three primary enclosure components.

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enclosed with the Enclosure Wiring Cover for security. The wiring terminals are of the plug-in type to ease installation and

removal.

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components mount on the base. The bottom section of the Enclosure Base contains the wiring chamber with knockouts on the

bottom to ease installation.

 7KH(QFORVXUH:LULQJ&RYHU seals the wires from the external environment. It has two screws to hold it to the base and a hole

to secure a lock on the wiring enclosure. A plastic web that separates the wiring chamber into high and low volt sections has been

provided.

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8S or the BCP-8X.

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operating temperature is from 20 to 120°F.

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removing the two bottom screws.

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mounting holes on the back of the enclosure.

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should not exceed ¼"

Mounting Base

Display Mounting Screws Wiring Cover Mounting Screws

Enclosure Display Module

Enclosure Wiring Cover Enclosure Base

Hole for optional

Padlock (not supplied)

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on the transducer are not used

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ass 2 vo

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the

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will not

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takeoff

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should never be in direct sunlight

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location

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sensor and wall

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Line

Neutral

120VAC

Power Source

PWR

27 2825 26

System

4-20mA

+ -

Auxiliary

Input1

RED

BLACK

Transducer

4-20mA

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 7KH%&36LVGHVLJQHGWREHFRQQHFWHGWRD:HLO0F/DLQ3UHVVXUHRU9DFXXPVHQVRU

located on the common header. Contact the factory for pressure sensor options.

 3UHVVXUHVHQVRUZLUHVFDQEHH[WHQGHGXSWR¶E\VSOLFLQJVKLHOGHG

2-conductor cable (Belden #8760 or equivalent).

 &RQQHFWWKH5HGZLUHWRWHUPLQDO25 (+) and connect the Black wire to terminal 26 (-).

:$51,1*

&RQQHFWWKH7HPSHUDWXUHVHQVRUVKLHOGDWWKHFRQWUROWRWHUPLQDOPDUNHGZLWK2'RQRW

FRQQHFWWKH6KLHOGDWWKHVHQVRUHQG

287'2256(1625:,5,1*7(50,1$/6

 :KHWKHULQ6HW3RLQWRU(06P$PRGHVWKHRXWGRRUVHQVRUFDQEHXVHGDVDQ2XWGRRU&XWRII7KH%&3

8S will disable all boilers when the outdoor temperature is above the adjustable Outdoor Cutoff temperature.

This feature will automatically be activated when an outdoor sensor is connected.

 )RUDQRXWGRRUVHQVRUXVHD:HLO0F/DLQRXWGRRUVHQVRUSURYLGHG

 7KHVHQVRUZLUHVFDQEHH[WHQGHGXSWR¶XVLQJVKLHOGHGFRQGXFWRUFDEOH%HOGHQRUHTXLYDOHQW

 7HPSHUDWXUHVHQVRUVKDYHQRSRODULW\&RQQHFWWKHZLUHVIURPWKHRXWGRRUVHQVRUWRWKH%&36WHUPLQDOV

marked OUTDOOR TEMP - 29, 30.

 &RQQHFWWKHVKLHOGWRWKHFLUFOHGWHUPLQDO30 with one of the sensor wires.

29 31 3

28 30 32

Sensor Shiled

Outdoor Sensor

Auxiliary

Input2

Outdoor

Temp

iliary

ut1

:,5,1*7+(6+87'2:17(50,1$/6

 7KLVIHDWXUHZLOORQO\EHDYDLODEOHZKHQ6KXWGRZQLVVHOHFWHGDVWKH([WHUQDO,QSXW0RGHRSWLRQIURPWKH

Startup menu on page 1.

 7KLVIHDWXUHFDQEHXVHGZKHQHYHULWLVGHVLUDEOHWRWXUQRIIWKH%&36VWDJHRXWSXWVIURPDUHPRWHORFDWLRQ

another controller (i.e. EMS input), or a switch.

 :KHQWKH6KXWGRZQIHDWXUHLVHQDEOHGE\FORVLQJDGU\FRQWDFWDOODFWLYHVWDJHVZLOOLPPHGLDWHO\WXUQRII7KH

6\VWHPDQG&RPE$LUUHOD\VZLOOUHPDLQHQHUJL]HGIRUWKH5XQ2QGHOD\SHULRGDQGWKHQWXUQRII

 7KH6KXWGRZQVLJQDOPXVWEHDGU\FRQWDFWRQO\1RYROWDJHFDQEHSODFHGDFURVVWKHSHUTDOWN terminals.

 %ULQJWKHWZRZLUHVIURPWKHGU\FRQWDFWWRWKHWHUPLQDOVPDUNHGSHUTDOWN- 35,36.

 :KHQ6KXWGRZQLVVHOHFWHG6HWEDFNZLOOEHDYDLODEOHXVLQJWKHSURJUDPPHG'D\1LJKWVFKHGXOH

Shutdown

Dry Contact

1333532 34 36

uxiliary

Input2

SHUTDOWN

/TSTAT

/SETBACK

Auxiliary

Input3

%&36,QVWDOODWLRQDQG2SHUDWLRQ0DQXDO

:,5,1*7+(767$77(50,1$/6

 7KLVIHDWXUHFDQEHXVHGZKHQHYHULWLVGHVLUDEOHWRVZLWFKWKH%&36WRRSHUDWHIURPDUHPRWHORFDWLRQLH

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.

 :KHQWKH7VWDWLVHQDEOHGE\FORVLQJDGU\FRQWDFWWKH%&36ZLOODFWLYDWHWKHKHDWLQJORJLF

 7KH7VWDWVLJQDOPXVWEHDGU\FRQWDFWRQO\1RYROWDJHFDQEHSODFHGDFURVVWKHTSTAT terminals.

 %ULQJWKHWZRZLUHVIURPWKHGU\FRQWDFWWRWKHWHUPLQDOVPDUNHGTSTAT- 35,36.

 :KHQ7VWDWLVVHOHFWHG6HWEDFNZLOOEHDYDLODEOHXVLQJWKHSURJUDPPHG'D\1LJKWVFKHGXOH

33 35

34 36

37 38

PROVE

SHUTDOWN

/TSTAT

/SETBACK

Auxiliary

Input3

T-Stat

Dry Contact

:,5,1*7+(6(7%$&.7(50,1$/6

 7KLVIHDWXUHZLOORQO\EHDYDLODEOHZKHQ6HWEDFNLVVHOHFWHGDVWKH([WHUQDO,QSXW0RGHRSWLRQIURPWKH6WDUWXS

menu on page 1.

 ,WFDQEHXVHGZKHQLWLVGHVLUDEOHWRVZLWFKWKH%&36WRRSHUDWHLQ6HWEDFNIURPDUHPRWHORFDWLRQLH(06

input or external time clock). No Day/Night scheduling options will be available with this feature.

 :KHQWKH6HWEDFNLVHQDEOHGE\FORVLQJDGU\FRQWDFWWKH7DUJHWZLOOEHUHGXFHGE\WKH6HWEDFNYDOXH

 7KH6HWEDFNVLJQDOPXVWEHDGU\FRQWDFWRQO\1RYROWDJHFDQEHSODFHGDFURVVWKHSETBACK terminals.

 %ULQJWKHWZRZLUHVIURPWKHGU\FRQWDFWWRWKHWHUPLQDOVPDUNHGSETBACK- 35,36.

33 35

34 36

37 38

PROVE

SHUTDOWN

/TSTAT

/SETBACK

Auxiliary

Input3

Setback

Dry Contact

:,5,1*7+(3529(7(50,1$/6

 7KH3URYHIHDWXUHLVSURYLGHGWRFKHFNV\VWHPFRPSRQHQWRSHUDWLRQEHIRUHHQHUJL]LQJWKHVWDJHV,WFDQEH

used to check on the Combustion Air Damper by connecting it to the end switch of the damper. In this case, the

Comb. Air Output option must be activated from the Startup Menu on page 1.

 ,IWKH&RPE$LU'DPSHU2XWSXWRSWLRQZDVQRWDFWLYDWHGWKH3529(LQSXWFDQEHXVHGWRFKHFNRQWKH6\VWHP

2XWSXW$W\SLFDOXVHRIWKLVIHDWXUHLVWRFKHFNIRUV\VWHPFRPSRQHQWVEHIRUHHQHUJL]LQJDQ\VWDJH

 ,IWKH3529(LQSXWLVRSHQRQDFDOOWKH%&36ZLOOHQDEOHRQO\WKH6\VWHPDQG&RPE$LU2XWSXWUHOD\V

All stage outputs will be off.

 $IDFWRU\LQVWDOOHGMXPSHUSURYLGHVWKH6\VWHP3URYHVLJQDO'RQRWUHPRYHWKHMXPSHUXQOHVVLWZLOOEH

replaced by a Prove signal.

 %ULQJWKHWZRZLUHVIURPWKHSURYHGU\FRQWDFWVRXUFHWRWKHWHUPLQDOVPDUNHGPROVE - 37, 38. No voltage can

be placed across the PROVE terminals

Prove

Dry Contact

37 38

PROVE

TSTAT

TBACK

:$51,1*

7KH3529(LQSXWFDQQRWEHXVHGDVDVDIHW\OLPLW$OOHTXLSPHQWPXVWKDYHLWVRZQFHUWL¿HGOLPLWDQGVDIHW\

controls as required by local codes. No boiler stage will start unless Prove terminals are shorted. DO NOT remove

the PROVE jumper supplied unless replacing it with a Prove signal.

:,5,1*7+(2873876

:,5,1*7+(6<67(02873877(50,1$/6

 7KH6\VWHPRXWSXWUHOD\ZLOOHQHUJL]HZKHQHYHUWKHRXWGRRUWHPSHUDWXUHGURSVEHORZWKH2XWGRRU&XWRIIRU

ZKHQHYHUDVWDJHRXWSXWLVDFWLYH,IQRRXWGRRUVHQVRULVFRQQHFWHGDQGWKHODVWERLOHUUHOD\KDVGHHQHUJL]HG

WKH6\VWHPUHOD\ZLOOUHPDLQHQHUJL]HGIRUDSHULRGVHWE\WKH5XQ2QWKHQGHHQHUJL]H

 1RVWDJHRXWSXWVZLOOEHDFWLYDWHGXQWLOWKHPROVE input is shorted.

 7KH6\VWHPRXWSXWUHOD\LVD1RUPDOO\2SHQ12GU\FRQWDFW,WGRHVQRWVRXUFHDQ\SRZHU

 &ODVVYROWDJHVPXVWHQWHUWKHHQFORVXUHWKURXJKDGLIIHUHQWRSHQLQJIURPDQ\&ODVVYROWDJHZLULQJ

23 24

AUX

OUT

COMB.

AIR

Comb.

Air

Damper

:,5,1*7+(&20%$,5'$03(57(50,1$/6

 The BCP-8S can control the Combustion Air Damper when the Comb. Air Output option is activated in the

Startup Menu (See page 1). In this scenario, the PROVE input will be used to check on the Combustion Air

Damper status.

 7KH%&36ZLOOHQHUJL]HWKH&RPEXVWLRQ$LU'DPSHUUHOD\ZKHQHYHUWKHUHLVDFDOOWRHQHUJL]HDQ\RIWKH

boiler stages.

 7KH&RPE$LURXWSXW relay is a Normally Open (N.O.) dry contact. It does not source any power.

 &ODVVYROWDJHVPXVWHQWHUWKHHQFORVXUHWKURXJKDGLIIHUHQWRSHQLQJIURPDQ\&ODVVYROWDJHZLULQJ

%&36,QVWDOODWLRQDQG2SHUDWLRQ0DQXDO

:,5,1*7+(67$*(67(50,1$/672

 7KH%&36FDQEHFRQ¿JXUHGWRRSHUDWHWKHVWDJHVRI2Q2IIRUPXOWLVWDJHERLOHUV

 7KHUHOD\VDUH12GU\FRQWDFWVRQO\7KH\GRQRWVRXUFHDQ\YROWDJH

 :LUHWKH12UHOD\FRQWDFWVLQVHULHVZLWKWKHERLOHU¶VOLPLWFLUFXLW

 :KHQZLULQJVHYHUDOPXOWLVWDJHERLOHUVVWDUWZLWKWKHORZHUVWDJHRIWKH¿UVWERLOHUDQGZLUHLWWR

Output A followed by the higher stage of the same boiler and wire it to Stage B.

Lo Hi

Unit1

Stages

Lo Hi

Unit2

Stages

Stage A

Stage B

Stage C

Stag

Stage D

68104

&211(&7,1*727+(%&3;3$1(/6$1'02',17(5)$&(

 7KH%&36LVHTXLSSHGZLWKDSKRQHVRFNHW56WRFRQQHFWWRWKH%&3;([WHQVLRQSDQHOVRUWKH02',QWHUIDFH

(389-900-226) using the provided 6-pin phone cable.

 (DFK%&3;([WHQVLRQKDVWZR56FRPPXQLFDWLRQSRUWV8VHRQHWRFRQQHFWWRWKH%&368VHWKHRWKHUSRUWWRFRQQHFW

to the second extension or the420MOD Interface (389-900-226).

 $GGLWLRQDOFRPSDWLEOHGHYLFHVFDQXWLOL]HWKHVHFRQG56FRQQHFWLRQRQWKHVHFRQG%&3;([WHQVLRQ$QH[DPSOHZRXOG

be to use the 420MOD Interface (389-900-226) to provide a 4-20mA set point signal to the BCP-8S.

6(/(&7,1*7+(%&3;3$1(//(77(5

 7KH%&36LVFDSDEOHRIFRPPXQLFDWLQJWRWZR%&3;([WHQVLRQV+RZHYHUHDFK

H[WHQVLRQPXVWEHLGHQWL¿HGDVHLWKHU$RU%XVLQJWKHVZLWFKRQHDFKH[WHQVLRQWRDYRLGKDYLQJ

communication problem.

 ([WHQVLRQ$UHTXLUHVWKH6ZLWFKWREHVHWWR$DQGZLOORSHUDWHVWDJHV,WKURXJK3:KLOH

Extension B requires the Switch to be set to "B" will operate stages "Q" through "X".

Ext A

Ext B

Connecting BCP-8 to Two Extension Panels

and 420MOD Interface using RS485

BCP-8

HYDRONIC SEQUENCING CONTROL

SYSTEM

DHW PUMP

INPUT RATINGS:

115VAC 60Hz, 12VA MAX

Use Copper Conductors Only.

CAUTION:

Risk of Electric Shock.

PWR

SENSORS MUST BE GOLD SERIES

SYSTEM

DHW

PUMP

Stage A

Stage B

Stage C

11 13

Stage E

Stage F

Stage D

6 8 10 12 14

16 18

RS485

SYS=144F OD=35F

<AB

>DE GH JK

HI LO -- OFF

Stage G

Stage H

OUTDOOR

TEMP

27 29 31

DHW

SHUTDOWN

/TSTAT

/SETBACK

RETURN

TEMP

20 22 28 30 32 34 36

STAGE MENU

Stage E

Stage F

Stage G

Stage H

Stage A

Stage B

Stage C

Stage D

25 26

PRESS

+ -

37 38

PROVE

TEMP

PROGRAM RUN

23 24

COMB.

AIR

DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS

COMB. AIR

ENCLOSED

ENERGY

MANAGEMENT

EQUIPMENT

LISTED

99RA

CUS

Power

CAUTION:

Risk of Electric Shock.

PWR

910

11 12

EXTENSION

MODULE

RS-485

Ext A

INPUT RATINGS:

115VAC 60Hz, 12VA MAX

OUTPUT RATINGS:

120VAC, 6A RESISTIVE

1A PILOT DUTY, 15A TOTAL

FOR ALL CIRCUITS

Ext B

Comm

13 14

Q S UR T V

BCP-8X A

Use Copper Conductors Only.

15 16

17 18

W X

Power

CAUTION:

Risk of Electric Shock.

PWR

910

11 12

EXTENSION

MODULE

RS-485

Ext A

INPUT RATINGS:

115VAC 60Hz, 12VA MAX

OUTPUT RATINGS:

120VAC, 6A RESISTIVE

1A PILOT DUTY, 15A TOTAL

FOR ALL CIRCUITS

Ext B

Comm

13 14

Q S UR T V

BCP-8X B

Use Copper Conductors Only.

15 16

17 18

W X

4-20 mA EMS

4-20mA INPUT

Signal GND

RS485

EXTENSION

CONNECTORS

420MOD EMS Interface

4-20mA

EMS Signal

(+)

(-)

6 Pin Phone Cable (provided with Extension)

6 Pin Phone Cable (provided with 420MOD EMS Interface)

SEQUENCING CONTROL EXTENSION

BCP-8X

SEQUENCING CONTROL EXTENSION

BCP-8X

BCP-8W

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---

MAINTENANCE

---

Unit

resent Time12:30P

Configuration

BACK SELECT

-----

SETTINGS

------

Season

Winter

et Point 9 psi

MS SetPoint 9 psi

BACK SELECT

7$//(5

(

- CONTROL MODE ---

Set Point

EMS 4

20mA

BACK SAVE

DISPLAY STANDARD

English

Metric

BACK SAVE

EMS 4mA SET POINT

0 psi

[

]

BACK SAVE

EMS 20mA SET POINT

30 psi

[

]

BACK SAVE

-COMB. AIR OUTPUT-

Yes

BACK SAVE

- EXTERNAL INPUT

Shutdown

Tstat

Setback

BACK SAVE

-- BURNER TYPE ----

n/Off

-Stage

Stage

BACK SAVE

- TOTAL BOILERS -

[

]

BACK SAVE

-----

STAGING

------

Multiple Outputs

ingle Outpu

BACK SAVE

----- SEQUENCE -------

o/Hi/Lo/H

Lo/Lo/Hi/Hi

BACK SAVE

---

CONTROL LOGIC

BACK SAVE

SENSOR FAULT

---

tages On

tages Off

BACK SAVE

ARE YOU SURE?

Yes

BACK SAVE

(

,17

--- SENSOR TRIM ---

ys Trim

0.0 psi

Outdoor Trim

BACK SELECT

Sys=10 ps

10:00AM

BACK NEXT

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

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n f

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ettin

s the Pro

ram/Run Switch must

e set to

rogra

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BCP-8S V1.00

Pressure 30psi

EMS 4

20mA, Shtdown

psi - 30psi

BACK NEXT

SENSOR TYPE

---

Pressure 15ps

Pressure 30psi

Pressure 100ps

Pressure 200psi

Pressure 300psi

Pressure 0.250MPa

Pressure 0.600MPa

Pressure 1.000MPa

Pressure 1.600MPa

Vacuum 3in/762mm

BACK SAVE

---- BOILER AB -----

Auto

Runtime

58Hrs

BACK SAVE

- BOILER AB MODE

Auto

Standby

Off

BACK SAVE

BOILER AB Runtime

58hrs

BACK CLEAR OK

,/(

0(1

8.5 psi

TGT

9.0 psi

ABC <DEF>

---- LO

Boiler Menu

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----- SETTINGS ------

Season

Winter

Set Point

9.0psi

EMS Set Point

9.0psi

System Settings>

Maintenance>

BACK SELECT

---

SEASON

Winter

Summer

BACK SAVE

----- SET POINT -----

8.0 psi

[

]

BACK SAVE

EMS SET POINT

8.0 ps

BACK SAVE

SYSTEM EXERCISE -

Off

BACK SAVE

------

RUN

------

2min

[ ]

BACK SAVE

- STAGE SETTINGS -

Reaction Time

1min

Purge Delay

0.0min

Min Runtime

2min

tandby Delay

0min

st Stge Hold

.0psi

Throttle

2.0psi

BACK SELECT

-- REACTION TIME --

2mi

[

]

BACK SAVE

---

PURGE DELAY

---

0.0mi

[

]

BACK SAVE

- MINIMUM Runtime

2mi

[

]

BACK SAVE

-- STANDBY DELAY --

10mi

[

]

BACK SAVE

LAST STAGE HOLD

0.0 psi

[]

BACK SAVE

-- LEAD BOILER --

BACK SELECT

AUTO ROTATE PERIOD

24hrs

[

]

BACK SAVE

THROTTLE RANGE -

2.0 ps

[

]

BACK SAVE

(

(77,

ETBACK SCHEDUL

Setbac

.0ps

Present Time

**:**

Day Schdul

00Am

Night Schdu

:00P

------

SETBACK

------

0.0 psi

[]

BACK SAVE

- NIGHT SCHEDULE --

:**

BACK SAVE

DAY SCHEDULE

---

07:**Am

BACK SAVE

- SET PRESENT TIME

BACK SAVE

BACK SELECT

- OUTDOOR CUTOFF -

[

]

BACK SAVE

LEAD ROTATION

Time

Manual

FOFO

BACK SELECT

- LEAD SETTINGS -

Lead Boiler

Rotate Mode

Time

BACK SELECT

/($'



27$7,2

8.5

psi

TGT

9.0 psi

ABC <EFG>

---- LO

Boiler Menu

SYSTEM SETTINGS

Setback

0.0psi

Run

2min

Sys Exercis

BACK SELECT

67(

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67$57836(77,1*6

Can be accessed by holding down the Menu button for over three seconds.

352*5$0&+$1*(6(77,1*6

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.

PROGRAM RUN

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Hold Button: MENU/<System Startup>

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GLDJQRVWLFVKDYHEHHQVXFFHVVIXOO\FRPSOHWHGWKH%&36ZLOOLQLWLDOL]HWKHSDQHO

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FRPSOHWH,ILWGRHVQRWWKH%&36KDVDOUHDG\EHHQFRQ¿JXUHG

ARE YOU SURE?

Yes

BACK SAVE

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described in this section.

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&21752/02'(

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Hold Button: MENU/<System Startup>/..../Control Mode

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in Set Point mode it will be used only as an Outdoor Cutoff point. That is, to turn the

stages, system, and Comb. Air relays off.

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EMS/BMS system. This requires the use of the 420MOD Interface (389-900-226).

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--- CONTROL MODE ---

Set Point

EMS 4-20mA

BACK SAVE

--- SENSOR TYPE ---

Pressure 15psi

Pressure 30psi

Pressure 100psi

Pressure 200psi

Pressure 300psi

Pressure 0.250MPa

Pressure 0.600MPa

Pressure 1.000MPa

Pressure 1.600MPa

Vacuum 3in/762mm

BACK SAVE

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9DFXXPLQPP 'HIDXOWSVL

Hold Button: MENU/<System Startup>/..../Sensor Type

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',63/$<67$1'$5'

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Hold Button: MENU/<System Startup>/..../Display Standard

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capability of displaying pressure and temperature information in either of the standards.

-DISPLAY STANDARD-

English

Metric

BACK SAVE

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Hold Button: MENU/<System Startup>/..../EMS 4mA Set Point/EMS 20mA Set Point

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VRXUFHWKHXVHUPXVWSXUFKDVHD:HLO0F/DLQ02',QWHUIDFHWR

accept the 4-20mA signal and transmit it to the BCP-8S.

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First, set the pressure reading at 4mA, then the set it at 20mA.

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4mA and 20mA settings entered.

EMS 4mA SET POINT

0psi

[ ]

BACK SAVE

EMS 20mA SET POINT

100psi

[ ]

BACK SAVE

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2-22mA range. The display will show the message "Shutdown by EMS" and all

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$/(57

A good practice after performing any Startup menu

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adjustments to match the new settings.

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Hold Button: MENU/<System Startup>/..../Comb. Air Output

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Air Damper or not.

- COMB. AIR OUTPUT-

Yes

BACK SAVE

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input to check on the status of the Combustion Air Damper. :KHQWKHODVWVWDJHLVGHHQHUJL]HGWKH&RPE$LUUHOD\ZLOO

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 In a failure situation, the message "Wait for Comb. Prove" will display when there is a call for a boiler until Prove

is shorted.

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FailureZLOOGLVSOD\XQWLOWKHVLWXDWLRQLVUHFWL¿HG

 ,I1RLVVHOHFWHGWKHPROVE input will be used to check System status instead of the Combustion Air Damper.

 :KHQQRWXVLQJWKHPROVE input, leave the supplied jumper in place on terminals 37 and 38.

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Hold Button: MENU/<System Startup>/..../External Input

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terminals 35 and 36 to turn off all the relays including all boiler stages.

 7KH7VWDWRSWLRQJLYHVWHUPLQDOV35 and 36 the capability of functioning as a heat-call.

That is, when the terminals are shorted, the BCP-8S will sequence the stages to maintain

the set point. However, when terminals are opened, all stages will turn off.

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weekends.

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when Shutdown or Tstat is selected as the External Input, or an external dry contact

signal to switch to setback by selecting Setback from this menu.

-- EXTERNAL INPUT -

Shutdown

Tstat

Setback

BACK SAVE

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Hold Button: MENU/<System Startup>/..../Burner Type

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--- BURNER TYPE ----

On/Off

2-Stage

3-Stage

4-Stage

BACK SAVE

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Hold Button: MENU/<System Startup>/..../Total Boilers

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number of outputs the BCP-8S is to control.

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additional units containing these stages will have CEDVWKHLUVWDWXVDQGZLOOVHL]HWR

operate.

-- TOTAL BOILERS --

[ ]

BACK SAVE

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Hold Button: MENU/<System Startup>/..../Staging

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output stages. These boilers will need to select the Multiple Output option. That means

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 6RPHXQLWVUHTXLUHWKDWZKHQWKHKLJKHURXWSXWVWDJHVDUHQHHGHGWKHORZHUVWDJHVPXVW

GHHQHUJL]H7RRSHUDWHWKHVHXQLWVWKHXVHUPXVWVHOHFWWKH6LQJOH2XWSXWRSWLRQ

------ STAGING ------

Multiple Outputs

Single Output

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Hold Button: MENU/<System Startup>/..../Sequencing

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HQHUJL]HGDORQHWKDQZLWKWKHKLJKHUVWDJHV7KHVHW\SHVRIERLOHUVVKRXOGVHOHFW/R/R

Hi/Hi. Then, the BCP-8S will sequence the lower stages of all Automatic boilers before

sequencing the higher stages.

------ SEQUENCE -------

Lo/Hi/Lo/Hi

Lo/Lo/Hi/Hi

BACK SAVE

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higher stage of the lag boiler.

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Hold Button: MENU/<System Startup>/..../Sequencing

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Boiler Min. Run Time. The PID relies on the rate of change in the system pressure.

The PID logarithmic calculations foresee changes and sequence stages based on those

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--- CONTROL LOGIC---

PID

OSS

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the set point. At one Throttling range below the Set Point, only one stage will be on. For each additional Throttling range

below the Set Point, an additional stage will be activated. The last stage on will be allowed to exceed the Set Point by one full

Throttling range before turning off that stage. This helps to prevent the last stage from short cycling. See Throttle Range.

When PID is selected, the following are the settings that directly affect this mode of operation:

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Hold Button: MENU/<System Startup>/..../Sensor Fault

 The Sensor Fault will determine the operating status of all output stages that are set to

Auto or Standby when a sensor reads Short or Open.

--- SENSOR FAULT ---

Stages On

Stages Off

BACK SAVE

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the Shutdown was active, all stages will be Off on a sensor fault.

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To Reset the BCP-8S control to its original factory defaults, follow the following steps:

 Power down the control.

 Hold down the two right most buttons while powering the control back up until the To-

tal Clear Started screen appears. The Display will direct you to the Startup

menu to program the control after the defaults are loaded.

TOTAL CLEAR STARTED

Release buttons

and

Please Wait

NOTE: After resetting the control to the original factory defaults, the user must go through all control settings.

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After performing a total reset, do not turn off power to the control until all Startup settings have been made. Otherwise,

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Can be accessed by holding down the Menu button for over three seconds.

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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.

PROGRAM RUN

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:LQWHU6XPPHU 'HIDXOW:LQWHU

Button: MENU/Season

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'LVSOD\/LQHZLOOUHDGSummer to show status.

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temperature falls to or below the Outdoor Cutoff setting. In addition, it will begin

heating whenever the System pressure falls below the Set Point. The Message Display

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Summer to turn off all heating instead of turning off the control. This will preserve the

battery life.

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DO NOT turn power off to the

BCP-8S when in off-season. If

you do so, the battery will run

down and have to be replaced.

Instead, switch to Summer.

---- SEASON ---

Winter

Summer

BACK SAVE

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Button: MENU/Set Point ,Q6HW3RLQWRU(06P$

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system pressure around the Set point.

----- SET POINT -----

12.0psi

[ ]

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Stage Settings.

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Button: MENU/Set Point/Outdoor Cutoff LQ6HW3RLQW

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automatically appear after the pressure Set Point has been selected.

-- OUTDOOR CUTOFF -

60 F

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boiler stages to hold the set point.

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temperature and the burner stages will be active to hold the set point.

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Hold Button: MENU/<System Settings>

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for enhanced comfort and better fuel savings. The BCP-8S behaves differently based on the

selected Control Modes (see Startup Settings on page 14).

- SYSTEM SETTINGS -

Setback 0.0Psi

Run-On 2min

System Exercise Off

BACK SELECT

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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.

PROGRAM RUN

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Hold Button: MENU/<System Settings>/<Stage Settings>

-- STAGE SETTINGS --

Reaction Time 1min

Purge Delay 0.0min

Min Runtime 2min

Standby Delay 10min

Lst Stge Hld 5.0psi

Throttle 2psi

BACK SELECT

-- REACTION TIME --

2min

[

]

BACK SAVE

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Hold Button: MENU/<System Settings>/<Stage Settings>/Reaction TimeLQ3,'/RJLFRQO\

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stage until the Reaction Time has elapsed. Then, it will recalculate if a stage is need.

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on a single stage and calculate how long it takes until the system begins to respond to

that stage. That period should be set as the Reaction Time.

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Hold Button: MENU/<System Settings>/<Stage Settings>/Purge DelayLQ3,'/RJLFRQO\

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--- PURGE DELAY ----

0.0min

[ ]

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over. This allows the boiler to fully come on line and to begin producing output.

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through the entire Purge Delay period (see PID operation on page ).

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Hold Button: MENU/<System Settings>/<Stage Settings>/Min RuntimeLQ3,'/RJLFRQO\

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- MINIMUM Runtime -

2min

[

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 ,QLWLDOO\VHWWKHMinimum Runtime to half the Reaction Time.

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Hold Button: MENU/<System Settings>/<Stage Settings>/Standby DelayLQ3,'/RJLFRQO\

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FDQQHYHUEHD/HDG6WDJH The Standby Delay only applies to boilers in Standby Mode.

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-- STANDBY DELAY --

10min

[

]

BACK SAVE

 7KHIXOO6WDQGE\'HOD\PXVWDOZD\VHODSVHUHJDUGOHVVRIZKDWKDSSHQVWRV\VWHPSUHVVXUH7KHUHIRUHDVKRUWHU6WDQGE\'HOD\

will result in smoother set point operation in extreme conditions. However, longer Standby Delays may prevent a Standby

boiler from starting if the other boilers can eventually meet the load, or if the load decreases.

 :KHQPRUHWKDQRQHERLOHULVVHWDVD6WDQGE\ERLOHUUHPHPEHUWKDWLWZLOOEHDGGHGWRWKH5HDFWLRQ7LPHIRUWKH¿UVWVWDJHRQ

WKH¿UVW6WDQGE\ERLOHURQO\7KHIROORZLQJVWDJHVDQGERLOHUVWDUWWLPHZLOOUHO\RQ3UH3XUJHDQG5HDFWLRQ7LPHRQO\

%&36,QVWDOODWLRQDQG2SHUDWLRQ0DQXDO

/$6767$*(+2/'

6HHSUHVVXUH7UDQVGXFHU'HIDXOW6HWWLQJVDQG5DQJHV7DEOH

Hold Button: MENU/<System Settings>/<Stage Settings>/Last Stge HoldLQ3,'/RJLFRQO\

 $YDLODEOHLQ3,'&RQWURO/RJLFRQO\6HH3,'2SHUDWLRQRQSDJH).

 7KH/DVW6WDJH+ROGSUHYHQWVVKRUWF\FOLQJRIWKH/HDG6WDJHGXULQJORZORDGFRQGLWLRQV

ZKHUHWKHV\VWHPPLJKWKDYHDORDGWKDWLVVLJQL¿FDQWO\OHVVWKDQWKHRXWSXWRIRQHVWDJH

- LAST STAGE HOLD

0 PSI

[ ]

BACK SAVE

 :KHQWKH%&36EULQJVRQWKH/HDG6WDJHWKH6HW3RLQWLVTXLFNO\H[FHHGHGDQGWKH/HDG6WDJHLVWXUQHGRII

 7RSURORQJWKHUXQWLPHGXULQJWKLVW\SHRIFRQGLWLRQXVHWKH/DVW6WDJH+ROGVHWWLQJ

 7KH%&36ZLOODOORZWKHV\VWHPSUHVVXUHWRH[FHHGWKH6HW3RLQWE\WKH/DVW6WDJH+ROGYDOXHEHIRUHWKH/HDG6WDJHLV

turned off.

 )RUH[DPSOHZLWKD6HW3RLQWRI3VLDQGD/DVW6WDJH+ROGVHWWLQJRI3VLWKH/HDG6WDJHERLOHUZLOOUHPDLQRQDWORZ¿UH

until the system reaches 10 Psi. During that period, the display will show "Hold Until 10 Psi" then, the lead stage

will turn off

7+5277/(5$1*(

6HHSUHVVXUH7UDQVGXFHU'HIDXOW6HWWLQJVDQG5DQJHV7DEOH

Hold Button: MENU/<System Settings>/<Stage Settings>/Throttle LQ266/RJLFRQO\

 $YDLODEOHLQ266&RQWURO/RJLFRQO\6HH2662SHUDWLRQRQSDJH).

 7KH7KURWWOLQJ5DQJHVHWVDSUHVVXUHEDQGDURXQGWKH6HW3RLQWWKDWFRQWUROVZKHQVWDJHV

will be turned on or off.

-- THROTTLE RANGE --

2PSI

[ ]

BACK SAVE

 )RUH[DPSOHLQWKH266&RQWURO0RGHQRVWDJHVZLOOEHDFWLYDWHGXQWLOWKHSUHVVXUHIDOOVRQHIXOO7KURWWOLQJ5DQJHEHORZWKH

Set Point. A second stage will be activated when the pressure falls to two full Throttling Ranges below the Set Point, and so on,

with one extra stage being turned on for every throttling range below the Set Point the System pressure reaches.

 6WDJHVZLOOEHWXUQHGRIIDVWKHSUHVVXUHULVHVWRZDUGWKH6HW3RLQWXVLQJRQHIXOOWKURWWOLQJUDQJHDVDGLIIHUHQWLDOEHWZHHQ

stages.

 7KHODVWVWDJHWREHWXUQHGRIIZLOOEHDOORZHGWRH[FHHGWKH6HW3RLQWE\DIXOOWKURWWOLQJUDQJHEHIRUHLWLVWXUQHGRII7KLVKHOSV

SUHYHQWWKHODVWVWDJHIURPVKRUWF\FOLQJZKHQWKHORDGLVORZRUZKHQWKHVWDJHLVRYHUVL]HG

6HW3RLQW 3VL  7KURWWOH 3VL %RLOHUV$%&'(DQG) /HDG6WDJH $!

)DOOLQJ3UHVVXUH 5LVLQJSUHVVXUH

6\VWHP

3UHVVXUH

7KURWWOH

5DQJHV

6WDJHV7XUQHG2Q 6WDJHV2Q 6WDJHV7XUQHG2II 6WDJHV2Q

55 Psi -1 ---- None A None

50 Psi 0 ---- None ---- A

45 Psi 1 A A ---- A

41 - 44 Psi 1 ---- A ---- A

40 Psi 2 B A + B B A + B

35 Psi 3 C A + B +C C A + B +C

30 Psi 4 D A + B +C + D D A + B +C + D

25 Psi 5 E A + B +C + D + E E A + B +C + D + E

20 Psi 6 F A + B +C + D + E + F F A + B +C + D + E + F

15 Psi 7 ---- A + B +C + D + E + F ---- A + B +C + D + E + F

/($'6(77,1*6

Hold Button: MENU/<System Settings>/<Stage Settings>/<Lead Settings>

7KHOHDGPHQXLVWRKHOSLQVHOHFWLQJWKH/HDGERLOHUDQGWKHW\SHRIURWDWLRQDSSURSULDWHIRU

the system.

-- LEAD SETTINGS --

Lead Boiler AB

Rotate Mode Time

BACK SELECT

%&36,QVWDOODWLRQDQG2SHUDWLRQ0DQXDO

/($'%2,/(5

'HSHQGLQJRQWKHQXPEHURIVWDJHV 'HIDXOW7KH¿UVWVHWRIVWDJHV

Hold Button: MENU/<System Settings>/<Stage Settings>/<Lead Setting>/Rotate Mode

 7KH/HDG%RLOHU¶VORZHVWVWDJHZLOODOZD\VEHWKHILUVWVWDJHEURXJKWRQZKHQWKHUHLVD

call for output. As more output is needed, additional Stages are added.

 7KH/HDG%RLOHULVDOZD\VVKRZQRQWKHPDLQGLVSOD\LQEUDFNHWV

 ,QD6WDJHV\VWHPVHH%XUQHU7\SHLQWKH6WDUWXSVHFWLRQRQSDJH1), the display will

VKRZWKHWZR/HDG%RLOHUVWDJHVEUDFNHWHG$%!,QD6WDJHV\VWHPWKHGLVSOD\ZLOO

VKRZWKHWKUHH/HDG%RLOHUVWDJHVEUDFNHWHG$%&!DQGVRRQ

 7KH/HDG%RLOHUFDQEHURWDWHGEDVHGRQWKH5RWDWLRQ0RGHVHOHFWHG6HHQH[WVHWWLQJ

-- LEAD BOILER --

BACK SELECT

527$7(02'(

$GMXVWDEOH7LPHIURPKUWRKUV0DQXDO)2)2 'HIDXOW7LPH+RXUV

Hold Button: MENU/<System Settings>/<Stage Settings>/<Lead Setting>/Rotate Mode

 7KH/HDG%RLOHULVWKH¿UVWERLOHUEURXJKWRQZKHQRXWSXWLVUHTXLUHG

 7KH/HDG%RLOHUFDQEHURWDWHGDXWRPDWLFDOO\PDQXDOO\RUEDVHGRQ)LUVW2Q)LUVW2II

(FOFO). The automatic rotation is recommended for most applications.

 7KHFXUUHQW/HDG%RLOHULVVKRZQLQEUDFNHWVRQWKHPDLQGLVSOD\

 2QO\ERLOHUVWKDWDUHVHWWR$XWR0RGHFDQEH/HDG7KHUHIRUHQRWDOOWKHERLOHUVPD\

EHDYDLODEOHZKHQPDQXDOO\VHOHFWLQJDQHZ/HDG%RLOHU

 ,I7LPHLVVHOHFWHGDVHFRQGVFUHHQZLOODOORZWKHDGMXVWPHQWRIWKH$XWR5RWDWH3HULRG

,I+RXUVGHIDXOWVHWWLQJZDVVHOHFWHGWKH¿UVWURWDWLRQZLOOWDNHHIIHFWDIWHUKRXUV

if the Time was not set. However, if the Time was set, the rotation will always take

place at 2:00AM. The following rotations will take place every 24 hours thereafter.

 ,I7LPH5RWDWLRQZDVVHWWRRWKHUWKDQKRXUVWKHURWDWLRQWLPHUZLOOVWDUWIURPWKH

moment the setting is changed.

 ,I)LUVW2Q)LUVW2II)2)2LVVHOHFWHGWKHFRQFHSWZLOOIROORZWKLVH[DPSOHLI$LVWKH

OHDGWKHVWDUWLQJVHTXHQFHRIERLOHUVZLOOEH$%WKHQ&:KHQWKHGHHQHUJL]LQJRI

the stages starts, it will turn off A, B, Then C. Then stage D will be the new lead for the

next load.

6(7%$&.6&+('8/(

Button: MENU/<System Settings>/<Stage Settings>/<Setback Schedule>

-- LEAD ROTATION --

Time

Manual

FOFO

BACK SELECT

If Time Rotation is selected

AUTO ROTATE PERIOD

24hrs

[ ]

BACK SAVE

SETBACK SCHEDULE

Setback 0psi

Present Time **:**

Day Schdule 7:00Am

Night Schdul 7:00Pm

BACK SELECT

6(7%$&.

6HHSUHVVXUH7UDQVGXFHU'HIDXOW6HWWLQJVDQG5DQJHV7DEOH

Button: MENU/<System Settings>/<Setback Schedule>/Setback LQ'D\1LJKW6FKHGXOH

Button: MENU/<System Settings>/Setback LQ([WHUQDO6LJQDO

 7KH6HWEDFNIHDWXUHFDQEHXVHGWRSURYLGHWKH%&36ZLWKDORZHU6HW3RLQWZKHQOHVV

load is required during the night or on the weekends when the building is not occupied,

but heat is still required.

------ SETBACK -------

0psi

[ ]

BACK SAVE

 7KHQHZ6HW3RLQWZLOODSSHDURQWKHPDLQGLVSOD\LQGLFDWLQJWKLVFRQGLWLRQSetback to 5 Psi".

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3RLQWRI3VL

$YRLGLQJ&RQÀLFWLQJ%RLOHU/LPLWV

 7KHSUHVVXUHOLPLWVVHWRQWKHERLOHUV0867EHVHWFRQVLGHUDEO\KLJKHUWKDQWKH%&3

8S’s Set Point for the reasons detailed below.

 7KH%&36VHQVRULVORFDWHGLQDFRPPRQKHDGHUVRPHGLVWDQFHIURPWKHERLOHUV

 $VWKHSUHVVXUHULVHVLQWKHKHDGHUDQGEHIRUHUHDFKLQJWKHVHQVRUORFDWLRQHQHUJ\LV

dissipated. Therefore, the pressure in the header could be lower than that registered by

the boiler sensors.

 ,QDGGLWLRQWRWKHQRUPDOGURSH[SHULHQFHGEHWZHHQWKHERLOHU¶VSUHVVXUHDQGWKDWUHDG

E\WKH%&36VHQVRUWKH/DVW6WDJH+ROGVHWWLQJPXVWEHDFFRXQWHGIRU7KHERLOHU

:$51,1*

The temperature limits set on

the boilers must be higher than

the BCP-8S Set Point. Read

the section at left for details

that will prevent erratic system

operation.

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Weil-McLain BCP-8S User manual

Brand: Weil-McLain

Model: BCP-8S

Category: Water heaters & boilers

Type: User manual

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Weil-McLain BCP-8S User manual

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