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7KH3529(LQSXWFDQQRWEHXVHGDVDVDIHW\OLPLW$OOHTXLSPHQWPXVWKDYHLWVRZQFHUWL¿HGOLPLWDQGVDIHW\
controls as required by local codes. No boiler stage will start unless the Prove terminals are shorted. DO NOT
remove the PROVE jumper supplied unless replacing it with a Prove signal.
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7KH6\VWHPRXWSXWKDVD1RUPDOO\2SHQ12UHOD\WKDWDFWVDVDGU\FRQWDFW,WGRHVQRWVRXUFHDQ\SRZHU
&ODVVYROWDJHVPXVWHQWHUWKHHQFORVXUHWKURXJKDGLIIHUHQWRSHQLQJIURPDQ\&ODVVYROWDJHZLULQJ
6\VWHP2XWSXW2SHUDWLRQLQ6HW3RLQW0RGH
7KH6\VWHPRXWSXWUHOD\ZLOOHQHUJL]HZKHQHYHUWKHRXWGRRUWHPSHUDWXUHGURSVEHORZWKH2XWGRRU&XWRIIRU
ZKHQHYHUDVWDJHRXWSXWLVDFWLYH,IQRRXWGRRUVHQVRULVFRQQHFWHGDQGWKHODVWERLOHUUHOD\KDVGHHQHUJL]HG
WKH6\VWHPUHOD\ZLOOUHPDLQHQHUJL]HGIRUDSHULRGVHWE\WKH5XQ2QDQGWKHQGHHQHUJL]H
,IWKHPROVELQSXWLV2SHQWKH6\VWHPUHOD\ZLOOUHPDLQHQHUJL]HGKRZHYHUDOOVWDJHVZLOOEHGHHQHUJL]HG
If a Prove is not required, the factory-installed jumper must remain connected for proper operation.
System
Pump
SYSTEM
DHW
PUMP
17
16 18
ge G
19
Stage H
2120 22
L
N
$W\SLFDOXVHRIWKH6\VWHPRXWSXWLVWRDFWLYDWHDV\VWHPSXPSRULWVVWDUWHU7KHSXPSFDQUXQZKHQHYHUWKHUHLVDFDOOIRU
KHDW:KHQVWDJHVDUHQRORQJHUUHTXLUHGWKHSXPSZLOOVWD\DFWLYHIRUDQDGMXVWDEOH5XQ2QGHOD\DQGWKHQGHHQHUJL]H
6\VWHP2XWSXW2SHUDWLRQLQ5HVHW0RGH
7KH6\VWHPRXWSXWUHOD\ZLOOHQHUJL]HZKHQHYHUWKHRXWGRRUWHPSHUDWXUHLVEHORZWKH2XWGRRU&XWRII
:KHQWKHRXWGRRUWHPSHUDWXUHULVHV)DERYHWKH2XWGRRU&XWRIIWKH6\VWHPRXWSXWZLOOUHPDLQHQHUJL]HGIRUWKHSHULRGVHW
by the System Run-OnDQGWKHQGHHQHUJL]H.
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The BCP-8W can control the DHW Pump when the DHW Pump Output option is activated from the Startup Menu.
See page 18.
7KH%&3:ZLOOHQHUJL]HWKH'+:3XPSZKHQHYHUWKHUHLVDFDOOIRU'+:XVLQJDGU\FRQWDFWRUZKHQWKH
DHW temperature falls below the DHW Set Point and DHW Differential when using a DHW sensor.
7KH'+:3XPSRXWSXW relay is a Normally Open (N.O.) dry contact. It does not source any power.
&ODVVYROWDJHVPXVWHQWHUWKHHQFORVXUHWKURXJKDGLIIHUHQWRSHQLQJIURPDQ\&ODVVYROWDJHZLULQJ
,I6KXWGRZQZDVVHOHFWHGDVWKH([WHUQDO,QSXWSDJH18), The BCP-8W will ignore a DHW call when the
Shutdown is active.
DHW
Pump
DHW
PUMP
7
18
19
a
ge H
2120 22
23
CO
M
A
I
SYSTEM
L
N
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The BCP-8W can control the Combustion Air Damper when the Comb. Air Output option is activated in the Startup
Menu (Page 18). In addition, the PROVE input will function as the Combustion Air Damper status checker.
7KH%&3:ZLOOHQHUJL]HWKH&RPEXVWLRQ$LU'DPSHUUHOD\ZKHQHYHUWKHUHLVDFDOOWRHQHUJL]HDQ\RIWKH
boiler stages.
7KH&RPEXVWLRQ$LURXWSXW relay is a Normally Open (N.O.) dry contact. It does not source any power.
&ODVVYROWDJHVPXVWHQWHUWKHHQFORVXUHWKURXJKDGLIIHUHQWRSHQLQJIURPDQ\&ODVVYROWDJHZLULQJ
DHW
PUMP
21
0
22
23 24
COMB.
AIR
E
M
Comb.
Air
Damper
L
N
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7KH%&3:FDQEHFRQ¿JXUHGWRRSHUDWHWKHVWDJHVRIWKHERLOHUV0RUHRYHULWFDQEHFRQ¿JXUHGWR
operate the boiler pumps or valves in addition to the boiler stages.
7KHUHOD\VDUHN.O. dry contacts only. They do not source any voltage.
:LUHWKH12UHOD\FRQWDFWVLQVHULHVZLWKWKHERLOHU¶VOLPLWFLUFXLW
&ODVVYROWDJHVPXVWHQWHUWKHHQFORVXUHWKURXJKDGLIIHUHQWNQRFNRXWIURPDQ\&ODVVYROWDJH
wiring.
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(DFK6WDJHRXWSXW$WKURXJK+KDVRQH12UHOD\
:KHQZLULQJVHYHUDOPXOWLVWDJHERLOHUVVWDUWZLWKWKHORZHUVWDJHRIWKH¿UVWERLOHUDQGZLUHLWWR
Output A, followed by the higher stage of the same boiler and wire it to Stage B.
35
Stage A
7
Stage B
9
Stage C
11
Stage
Stage D
6 8 10 14
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
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