Weil-McLain BCP-8S User manual

Weil-McLain
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
LN
12
SYS
3
AUX
OUT
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14
16 18
RS485
13PSI 35F
<AB>
DE GH JK
HI
LO -- OFF
4
Stage G
19
Stage H
21
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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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)
14
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
&RQ¿JXUDWLRQ................... .22
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
LN
12
SYS
3
AUX
OUT
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14
16 18
RS485
4
Stage G
19
Stage H
21
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
HI
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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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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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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(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.
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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.
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Extension Panels, each with eight stages.
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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.
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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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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.
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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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Conduit
Outdoor Label
on back of Sensor
Outdoor Sensor
Mounting
screws
location
Seal around
sensor and wall
Outdoor
drip-hole
9
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:,5,1*
:,5,1*7+(32:(57(50,1$/6
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 &RQQHFWWKHKRWOLQHWRWHUPLQDOPDUNHGL.
 &RQQHFWWKHQHXWUDOOLQHWRWKHWHUPLQDOPDUNHGN.
:$51,1*
&ODVVYROWDJHZLULQJPXVWXVHDGLIIHUHQWNQRFNRXWDQGFRQGXLWIURPDQ\&ODVVYROWDJHZLULQJ
:HLO0F/DLQUHFRPPHQGVLQVWDOOLQJDVXUJHVXSSUHVVRURQWKHSRZHUVRXUFHWRWKH%&36
Line
Neutral
120VAC
Power Source
PWR
LN
12
27 2825 26
System
4-20mA
+ -
Auxiliary
Input1
RED
BLACK
Transducer
4-20mA
:,5,1*7+(,13876
6<67(035(6685(6(1625:,5,1*7(50,1$/6
 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$PRGHVWKHRXWGRRUVHQVRUFDQEHXVHGDVDQ2XWGRRU&XWRII7KH%&3
8S will disable all boilers when the outdoor temperature is above the adjustable Outdoor Cutoff temperature.
This feature will automatically be activated when an outdoor sensor is connected.
 )RUDQRXWGRRUVHQVRUXVHD:HLO0F/DLQRXWGRRUVHQVRUSURYLGHG
 7KHVHQVRUZLUHVFDQEHH[WHQGHGXSWR¶XVLQJVKLHOGHGFRQGXFWRUFDEOH%HOGHQRUHTXLYDOHQW
 7HPSHUDWXUHVHQVRUVKDYHQRSRODULW\&RQQHFWWKHZLUHVIURPWKHRXWGRRUVHQVRUWRWKH%&36WHUPLQDOV
marked OUTDOOR TEMP - 29, 30.
 &RQQHFWWKHVKLHOGWRWKHFLUFOHGWHUPLQDO30 with one of the sensor wires.
7
29 31 3
3
28 30 32
Sensor Shiled
Outdoor Sensor
Auxiliary
Input2
Outdoor
Temp
x
iliary
p
ut1
Au
x
In
p
:,5,1*7+(6+87'2:17(50,1$/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
3
1333532 34 36
3
P
A
uxiliary
Input2
SHUTDOWN
/TSTAT
/SETBACK
Auxiliary
Input3
10
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:,5,1*7+(767$77(50,1$/6
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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
2
34 36
37 38
y
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.
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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
2
34 36
37 38
y
PROVE
SHUTDOWN
/TSTAT
/SETBACK
Auxiliary
Input3
Setback
Dry Contact
:,5,1*7+(3529(7(50,1$/6
 7KH3URYHIHDWXUHLVSURYLGHGWRFKHFNV\VWHPFRPSRQHQWRSHUDWLRQEHIRUHHQHUJL]LQJWKHVWDJHV,WFDQEH
used to check on the Combustion Air Damper by connecting it to the end switch of the damper. In this case, the
Comb. Air Output option must be activated from the Startup Menu on page 1.
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2XWSXW$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
5
36
37 38
PROVE
TSTAT
E
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$/6
 7KH6\VWHPRXWSXWUHOD\ZLOOHQHUJL]HZKHQHYHUWKHRXWGRRUWHPSHUDWXUHGURSVEHORZWKH2XWGRRU&XWRIIRU
ZKHQHYHUDVWDJHRXWSXWLVDFWLYH,IQRRXWGRRUVHQVRULVFRQQHFWHGDQGWKHODVWERLOHUUHOD\KDVGHHQHUJL]HG
WKH6\VWHPUHOD\ZLOOUHPDLQHQHUJL]HGIRUDSHULRGVHWE\WKH5XQ2QWKHQGHHQHUJL]H
 1RVWDJHRXWSXWVZLOOEHDFWLYDWHGXQWLOWKHPROVE input is shorted.
 7KH6\VWHPRXWSXWUHOD\LVD1RUPDOO\2SHQ12GU\FRQWDFW,WGRHVQRWVRXUFHDQ\SRZHU
 &ODVVYROWDJHVPXVWHQWHUWKHHQFORVXUHWKURXJKDGLIIHUHQWRSHQLQJIURPDQ\&ODVVYROWDJHZLULQJ
21
0
22
23 24
S
AUX
OUT
COMB.
AIR
Comb.
Air
Damper
L
N
:,5,1*7+(&20%$,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
11
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:,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ERLOHUV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
35
Stage A
7
Stage B
9
Stage C
11
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
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14
16 18
RS485
SYS=144F OD=35F
<AB
>DE GH JK
HI LO -- OFF
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
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
O
P
Power
CAUTION:
Risk of Electric Shock.
PWR
LN
12
I
34
J
56
K
78
L
910
M
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
L
M
N
Comm
T
U
V
W
X
N
13 14
Q S UR T V
BCP-8X A
Use Copper Conductors Only.
I
J
K
Q
R
S
O
15 16
P
17 18
W X
O
P
Power
CAUTION:
Risk of Electric Shock.
PWR
LN
12
I
34
J
56
K
78
L
910
M
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
L
M
N
Comm
T
U
V
W
X
N
13 14
Q S UR T V
BCP-8X B
Use Copper Conductors Only.
I
J
K
Q
R
S
O
15 16
P
17 18
W X
4-20 mA EMS
4-20mA INPUT
+
Signal GND
1
2
3
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
12
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-
---
MAINTENANCE
---
-
Unit
F
P
resent Time12:30P
<Sensor Trim>
<Histories>
<
Configuration
>
BACK SELECT
-
-----
SETTINGS
------
Season
Winter
S
et Point 9 psi
E
MS SetPoint 9 psi
<System Settings>
<Maintenance>
<System Startup>
BACK SELECT
,
1
6
7$//(5
0
(
1
8
6
(
4
8
(1
&
(
-
- 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-
No
Yes
BACK SAVE
-
- EXTERNAL INPUT
-
Shutdown
Tstat
Setback
BACK SAVE
-
-- BURNER TYPE ----
O
n/Off
2
-Stage
3
-
Stage
4
-
Stage
BACK SAVE
-
- TOTAL BOILERS -
-
8
[
]
BACK SAVE
-
-----
STAGING
------
Multiple Outputs
S
ingle Outpu
t
BACK SAVE
-
----- SEQUENCE -------
L
o/Hi/Lo/H
i
Lo/Lo/Hi/Hi
BACK SAVE
---
CONTROL LOGIC
--
-
P
I
D
O
S
S
BACK SAVE
-
--
SENSOR FAULT
---
S
tages On
S
tages Off
BACK SAVE
ARE YOU SURE?
No
Yes
BACK SAVE
(
0
6
6
(
7
3
2
,17
--- SENSOR TRIM ---
-
S
ys Trim
+
0.0 psi
Outdoor Trim
+0
F
BACK SELECT
Sys=10 ps
i
10:00AM
BACK NEXT
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.
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ettin
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s the Pro
g
ram/Run Switch must
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e set to
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rogra
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6
6
7$57
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BCP-8S V1.00
Pressure 30psi
EMS 4
-
20mA, Shtdown
0
psi - 30psi
BACK NEXT
-
--
SENSOR TYPE
---
Pressure 15ps
i
Pressure 30psi
Pressure 100ps
i
Pressure 200psi
Pressure 300psi
Pressure 0.250MPa
Pressure 0.600MPa
Pressure 1.000MPa
Pressure 1.600MPa
Vacuum 3in/762mm
BACK SAVE
-
---- BOILER AB -----
M
od
e
Auto
Runtime
58Hrs
<Prev Boiler>
<Next Boiler>
BACK SAVE
- BOILER AB MODE
-
Auto
Standby
Off
O
n
BACK SAVE
BOILER AB Runtime
58hrs
BACK CLEAR OK
2
%
2
,/(
5
0(1
8
8.5 psi
4
5
F
TGT
=
9.0 psi
ABC <DEF>
---- LO
Boiler Menu
13
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----- SETTINGS ------
Season
Winter
Set Point
9.0psi
EMS Set Point
9.0psi
<
System Settings>
<
Maintenance>
<System Startup>
BACK SELECT
-
---
SEASON
--
-
Winter
Summer
BACK SAVE
----- SET POINT -----
8.0 psi
[
]
BACK SAVE
--
EMS SET POINT
--
8.0 ps
i
BACK SAVE
-
SYSTEM EXERCISE -
Off
On
BACK SAVE
6
(7
32
,1
7
-
------
RUN
-
ON
------
-
2min
[ ]
BACK SAVE
- STAGE SETTINGS -
Reaction Time
1min
Purge Delay
0.0min
Min Runtime
2min
S
tandby Delay
1
0min
L
st Stge Hold
5
.0psi
Throttle
2.0psi
<Lead Settings>
BACK SELECT
-- REACTION TIME --
2mi
n
[
]
BACK SAVE
---
PURGE DELAY
---
-
0.0mi
n
[
]
BACK SAVE
- MINIMUM Runtime
2mi
n
[
]
BACK SAVE
-- STANDBY DELAY --
10mi
n
[
]
BACK SAVE
LAST STAGE HOLD
0.0 psi
[]
BACK SAVE
-- LEAD BOILER --
A
B
CD
BACK SELECT
AUTO ROTATE PERIOD
24hrs
[
]
BACK SAVE
-
THROTTLE RANGE -
2.0 ps
i
[
]
BACK SAVE
6
7$
*
(
6
(77,
1
*
6
S
ETBACK SCHEDUL
E
Setbac
k
0
.0ps
i
Present Time
**:**
Day Schdul
7
:
00Am
Night Schdu
l
7
:00P
m
------
SETBACK
------
-
0.0 psi
[]
BACK SAVE
- NIGHT SCHEDULE --
07
:**
Pm
BACK SAVE
--
DAY SCHEDULE
---
-
07:**Am
BACK SAVE
- SET PRESENT TIME
**
:
**
BACK SAVE
6&
6&
+
6
('
8
/(
6
BACK SELECT
- OUTDOOR CUTOFF -
60
F
[
]
BACK SAVE
--
LEAD ROTATION
--
Time
Manual
FOFO
BACK SELECT
-
- LEAD SETTINGS -
-
Lead Boiler
AB
Rotate Mode
Time
BACK SELECT
/($'
5
27$7,2
1
8.5
psi
45
F
TGT
=
9.0 psi
ABC <EFG>
---- LO
Boiler Menu
-
SYSTEM SETTINGS
-
<Stage Settings>
<Setback Schedule>
Setback
0.0psi
Run
-
On
2min
Sys Exercis
e
O
f
f
BACK SELECT
6
<
67(
0
6
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6
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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&+$1*(6(77,1*6
To be able to change the BCP-8S settings the Program/Run Switch must be set to Program.
The switch is located under the Enclosure Wiring Cover for security. The Enclosure Wiring
Cover can be securely closed using a padlock.
PROGRAM RUN
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Hold Button: MENU/<System Startup>
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GLDJQRVWLFVKDYHEHHQVXFFHVVIXOO\FRPSOHWHGWKH%&36ZLOOLQLWLDOL]HWKHSDQHO
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FRPSOHWH,ILWGRHVQRWWKH%&36KDVDOUHDG\EHHQFRQ¿JXUHG
ARE YOU SURE?
No
Yes
BACK SAVE
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described in this section.
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&21752/02'(
6HW3RLQW(06P$ 'HIDXOW6HW3RLQW
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).
 <RXPXVWVHOHFWWKHP$PLQDQGP$PD[6HW3RLQWVLQWKHIROORZLQJVFUHHQV
--- 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'$5'
(QJOLVKPHWULF 'HIDXOW(QJOLVK
Hold Button: MENU/<System Startup>/..../Display Standard
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capability of displaying pressure and temperature information in either of the standards.
-DISPLAY STANDARD-
English
Metric
BACK SAVE
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Hold Button: MENU/<System Startup>/..../EMS 4mA Set Point/EMS 20mA Set Point
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VRXUFHWKHXVHUPXVWSXUFKDVHD:HLO0F/DLQ02',QWHUIDFHWR
accept the 4-20mA signal and transmit it to the BCP-8S.
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First, set the pressure reading at 4mA, then the set it at 20mA.
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4mA and 20mA settings entered.
EMS 4mA SET POINT
0psi
[ ]
BACK SAVE
EMS 20mA SET POINT
100psi
[ ]
BACK SAVE
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2-22mA range. The display will show the message "Shutdown by EMS" and all
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A good practice after performing any Startup menu
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adjustments to match the new settings.
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1R<HV 'HIDXOW<HV
Hold Button: MENU/<System Startup>/..../Comb. Air Output
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Air Damper or not.
- COMB. AIR OUTPUT-
No
Yes
BACK SAVE
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input to check on the status of the Combustion Air Damper. :KHQWKHODVWVWDJHLVGHHQHUJL]HGWKH&RPE$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.
 6HWEDFNLVXVHGWRORZHUWKHVHWSRLQWZKHQOHVVORDGLVUHTXLUHGGXULQJQLJKWVDQG
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
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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
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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 --
8
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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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------ STAGING ------
Multiple Outputs
Single Output
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Hold Button: MENU/<System Startup>/..../Sequencing
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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
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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
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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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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
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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 -
<Stage Settings>
<Setback Schedule>
Setback 0.0Psi
Run-On 2min
System Exercise Off
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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
<Lead Settings>
BACK SELECT
-- REACTION TIME --
2min
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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 DelayLQ3,'/RJLFRQO\
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--- PURGE DELAY ----
0.0min
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 :KHQWKH%&36DFWLYDWHVDVWDJHWKHORZHVWVWDJHRQDERLOHULWGRHVQRWVWDUWWRFDOFXODWHLWVRXWSXWXQWLOWKH3XUJH'HOD\LV
over. This allows the boiler to fully come on line and to begin producing output.
 7KH3XUJH'HOD\KHOSVSUHYHQWVKRUWF\FOLQJRIDQHZO\DFWLYDWHGERLOHU2QFHWKHORZHVWERLOHUVWDJHLVDFWLYDWHGLW0867UXQ
through the entire Purge Delay period (see PID operation on page ).
 7KHPLQLPXP3XUJH'HOD\VHWWLQJ0867EHVHWWRWKHWLPHUHTXLUHGE\WKHERLOHUVPDQXIDFWXUHUVSHFL¿FDWLRQ
0,1,0805817,0(
$GMXVWDEOHIURPWRPLQXWHV 'HIDXOWPLQXWHV
Hold Button: MENU/<System Settings>/<Stage Settings>/Min RuntimeLQ3,'/RJLFRQO\
 $YDLODEOHLQ3,'&RQWURO/RJLFRQO\6HH3,'2SHUDWLRQRQSDJH).
 7KLVLVWKHPLQLPXPDPRXQWRIWLPHDQ\VWDJHZLOOUXQ
 )RUWKHORZHVWVWDJHRIDERLOHUWKH0LQLPXP5XQWLPHVWDUWVDIWHUWKHSXUJHF\FOH
- MINIMUM Runtime -
2min
[
]
BACK SAVE
 7KLVWLPHUGRHVQRWDSSO\WRWKHODVWVWDJHRQOLQH7KH/DVW6WDJH+ROGDSSOLHVLQWKDWFDVH
 ,QLWLDOO\VHWWKHMinimum Runtime to half the Reaction Time.
 ,I6\VWHPWHQGVWRRYHUVKRRWUHGXFHWKHMinimum Runtime. If boilers tend to short cycle, increase Minimum Runtime.
67$1'%<'(/$<
$GMXVWDEOHIURPWRPLQXWHV 'HIDXOWPLQXWHV
Hold Button: MENU/<System Settings>/<Stage Settings>/Standby DelayLQ3,'/RJLFRQO\
 $YDLODEOHLQ3,'&RQWURO/RJLFRQO\6HH3,'2SHUDWLRQRQSDJH).
 6WDQGE\ERLOHUVDUHXVHGDVDEDFNXSIRUH[WUHPHORDGFRQGLWLRQVRQO\$6WDQGE\ERLOHU
FDQQHYHUEHD/HDG6WDJH The Standby Delay only applies to boilers in Standby Mode.
 $6WDQGE\XQLWFDQRQO\EHDFWLYDWHGDIWHUDOOWKHXQLWVLQ$XWR0RGHKDYHUXQDWKLJK
¿UHIRUWKHIXOO6WDQGE\GHOD\
-- 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\
19
%&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 HoldLQ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
[ ]
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: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
20
%&36,QVWDOODWLRQDQG2SHUDWLRQ0DQXDO
/($'%2,/(5
'HSHQGLQJRQWKHQXPEHURIVWDJHV 'HIDXOW7KH¿UVWVHWRIVWDJHV
Hold Button: MENU/<System Settings>/<Stage Settings>/<Lead Setting>/Rotate Mode
 7KH/HDG%RLOHUVORZHVWVWDJHZLOODOZD\VEHWKHILUVWVWDJHEURXJKWRQZKHQWKHUHLVD
call for output. As more output is needed, additional Stages are added.
 7KH/HDG%RLOHULVDOZD\VVKRZQRQWKHPDLQGLVSOD\LQEUDFNHWV
 ,QD6WDJHV\VWHPVHH%XUQHU7\SHLQWKH6WDUWXSVHFWLRQRQSDJH1), the display will
VKRZWKHWZR/HDG%RLOHUVWDJHVEUDFNHWHG$%!,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 --
AB
CD
EF
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".
 )RUH[DPSOHLILQWKHSUHVVXUHVHWSRLQWLV3VLDQGWKH6HWEDFNLV3VLWKHQZKHQLQ6HWEDFNWKH%&36ZLOOKROGD6HW
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ERLOHUV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

Weil-McLain
Brand
Weil-McLain
Model
BCP-8S
Category
Water heaters & boilers
Type
User manual
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