Weil-McLain BMC-6X operation manual BMC Layout, Associated relay status

BMC and BMC-6X Installation and Operation Manual

BMC LAYOUT

Program Switch to restrict access to function changes. This switch is covered with Wiring Enclosure.

The digital display shows the system status, set point, lead stage <in brackets>, and status of each stage.

To view and adjust settings, press the appropriate buttons.

LED indicates the	Buttons function is presented on
	Bottom Row of display.
associated relay status.

OUTPUT RATINGS:

120VAC, 6A RESISTIVE

1A PILOT DUTY, 15A TOTAL FOR ALL CIRCUITS

INPUT RATINGS:

115VAC 60Hz , 30VA MAX

USE COPPER WIRE, CLASS 1 WIRE ONLY.

C US

BMC

Full Modulation Sequencing Control

SYSTEM

A

B	---	---
C
D

PWR

LN

1 2

ENCLOSED
ENERGY
MANAGEMENT	CAUTION: RISK OF ELECTRIC SHOCK
EQUIPMENT
LISTED	More than one disconnect switch may be required
99RA	to de-energize the equipment before servicing.

PROGRAM

RUN

DO NOT APPLY ANY VOLTAGE

TO INPUT TERMINALS

SYS

A

B

C

D

A

B

C

D

OUTDOOR

SYSTEM

SYSTEM

SHUTDOWN

/TSTAT

CUR / VLT

CUR / VLT

CUR / VLT

CUR / VLT

TEMP

TEMP

PROVE

/SETBACK

GND

mA

VLT

GND

mA

VLT

GND

mA

VLT

GND

mA

VLT

T

O

T

O

O

O

-

+

+

-

+

+

-

+

+

-

+

+

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

EXTENSION MODULE

RS-485

120VAC Power	Four N.O. Boiler startup relay		When connecting Outdoor and System
	outputs. Each is wired in series		Sensors, no Polarity is observed.
	with each boiler's limit circuit.		Prove terminals must be connected
			for BMC to operate boilers.
System Output controls		Four modulation outputs can be 0-5V,		Connect Extension panels to
pumps, valves, or other		0-10V, 1-5V, 2-10V, or 4-20ma. Go to		add additional stages using
system components.		Startup Menu to determine the type of		a 6 pin phone line only (cable
		output for each stage.		provided with BMC-6X).

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