Weil-McLain BCP-8X 5,1*7+67$*6 750,1$/672 , 211&7,1*727+%&33$1/6$102,175$

%&36,QVWDOODWLRQDQG2SHUDWLRQ0DQXDO

:,5,1*7+(67$*(67(50,1$/672

‡ 7KH%&36FDQEHFRQ¿JXUHGWRRSHUDWHWKHVWDJHVRI2Q2IIRUPXOWLVWDJHERLOHUV ‡ 7KHUHOD\VDUH12GU\FRQWDFWVRQO\7KH\GRQRWVRXUFHDQ\YROWDJH

‡ :LUHWKH12UHOD\FRQWDFWVLQVHULHVZLWKWKHERLOHU¶VOLPLWFLUFXLW

‡ :KHQZLULQJVHYHUDOPXOWLVWDJHERLOHUVVWDUWZLWKWKHORZHUVWDJHRIWKH¿UVWERLOHUDQGZLUHLWWR

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

Stage A Stage B Stage C Stage D Stag

3 4 5 6 7 8 9 10 11

Lo Hi Lo Hi

Unit1 Unit2

Stages Stages

&211(&7,1*727+(%&3;3$1(/6$1'02',17(5)$&(

‡ 7KH%&36LVHTXLSSHGZLWKDSKRQHVRFNHW56WRFRQQHFWWRWKH%&3;([WHQVLRQSDQHOVRUWKH02',QWHUIDFH

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

‡ (DFK%&3;([WHQVLRQKDVWZR56FRPPXQLFDWLRQSRUWV8VHRQHWRFRQQHFWWRWKH%&368VHWKHRWKHUSRUWWRFRQQHFW

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

‡ $GGLWLRQDOFRPSDWLEOHGHYLFHVFDQXWLOL]HWKHVHFRQG56FRQQHFWLRQRQWKHVHFRQG%&3;([WHQVLRQ$QH[DPSOHZRXOG

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%&36LVFDSDEOHRIFRPPXQLFDWLQJWRWZR%&3;([WHQVLRQV+RZHYHUHDFK	Ext A
	H[WHQVLRQPXVWEHLGHQWL¿HGDVHLWKHU$RU%XVLQJWKHVZLWFKRQHDFKH[WHQVLRQWRDYRLGKDYLQJ
	communication problem.
‡	([WHQVLRQ$UHTXLUHVWKH6ZLWFKWREHVHWWR$DQGZLOORSHUDWHVWDJHV,WKURXJK3:KLOH
	Extension B requires the Switch to be set to "B" will operate stages "Q" through "X".

Ext B

Connecting BCP-8 to Two Extension Panels

and 420MOD Interface using RS485

BCP-8 BCP-8X A

BCP-8W

HYDRONIC SEQUENCING CONTROL

BCP-8X

SEQUENCING CONTROL EXTENSION

SYS=144F OD=35F

Stage A	Stage E	SYSTEM
Stage B	Stage F	DHW PUMP	<AB > DE	GH	JK
Stage C	Stage G		HI LO	--	OFF
		COMB. AIR	STAGE		MENU
Stage D	Stage H

I Q	L T	O W
J R	M U	P X
K S	N V
	Comm	Power

OUTPUT RATINGS:

120VAC, 6A RESISTIVE

1A PILOT DUTY, 15A TOTAL FOR ALL CIRCUITS

INPUT RATINGS:

115VAC 60Hz, 12VA MAX

	ENCLOSED
INPUT RATINGS:	ENERGY
	MANAGEMENT
115VAC 60Hz, 12VA MAX	EQUIPMENT C	US

LISTED

99RA

DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS

CAUTION: Risk of Electric Shock.

CAUTION: Risk of Electric Shock.

SENSORS MUST BE GOLD SERIES

Use Copper Conductors Only.

PROGRAM

RUN

Use Copper Conductors Only.

Ext A

Ext B

PWR

RS485

PWR

I

Q

J

R

K S

L

T

M U

N V

O W P X

EXTENSION

COMB.

RETURN

SHUTDOWN

MODULE

L

N

Stage A Stage B Stage C Stage D Stage E Stage F

Stage G Stage H

AIR

PRESS

TEMP

DHW

/TSTAT

PROVE

+

-

TEMP

/SETBACK

L

N

RS-485

1

2

3

4

5

6

7

8

9 10 11 12 13 14

15 16 17 18 19 20 21 22 23 24

25 26 27 28 29 30 31 32 33 34 35 36 37 38

1

2

3

4

5

6

7

8

9

10 11 12 13 14 15 16 17 18

6 Pin Phone Cable (provided with Extension)

BCP-8X B

420MOD EMS Interface

BCP-8X

SEQUENCING CONTROL EXTENSION

I Q	L T	O W	OUTPUT RATINGS:
			120VAC, 6A RESISTIVE
J R	M U	P X	1A PILOT DUTY, 15A TOTAL
			FOR ALL CIRCUITS
K S	N V		INPUT RATINGS:
			115VAC 60Hz, 12VA MAX
	Comm	Power

4-20mA (+) EMS Signal (-)

4-20 mA EMS

4-20mA INPUT

CAUTION: Risk of Electric Shock.

RS485

Use Copper Conductors Only.

Ext A

Ext B

+

Signal GND

EXTENSION

1

2

3

CONNECTORS

PWR

I

Q

J

R

K S

L

T M U N V

O W P X

EXTENSION

MODULE

L

N

RS-485

1

2

3

4

5

6

7

8

9

10 11 12 13 14 15 16 17 18

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

11