Weil-McLain BCP-8X - Manual (Page 3)

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STEAM SEQUENCING CONTROL
SYS
AUX OUT
PWR
L N
1 2
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
C US
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.
13
PSI
35
F
CD EF GH
HI LO -- OFF
BOILER MENU
BCP-8S
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