Weil-McLain BMC-6X - Manual
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Table of Contents:
- Page 2 – BMC and BMC-6X Installation and Operation Manual; Make Sure You Have the Right Control . . 6; Contents
- Page 3 – BMC; BMC LAYOUT
- Page 4 – BMC OVERVIEW
- Page 5 – UNDERSTANDING OPERATION CONCEPT; RESET RATIO/OUTDOOR RESET; F Outdoor; Type of Radiation in Building; Reset Ratio Curves; WARNING
- Page 6 – INITIAL SETUP; SELECTING THE SYSTEM FEATURES
- Page 7 – INSTALLATION; The Enclosure Display Module:; MOUNTING THE ENCLOSURE; Select a location near the equipment to be controlled.
- Page 8 – LOCATING HSS; Do not run sensor wires in conduit with line voltage wiring.; IMMERSION HEATING SYSTEM SENSOR (HSS) INSTALLATION; Insert the sensor probe of the supplied sensor into the well.; ALERT; OUTDOOR SENSOR INSTALLATION; Adhere the Outdoor Label provided to the back of the sensor base.; Outdoor Sensor
- Page 9 – Connect the hot line to terminal marked L.; WIRING THE SENSORS; Connect the shield to the circled terminal; Bring the two wires from the dry contact to the terminals marked
- Page 10 – PROVE; DHW Call; System Output Operation in Set Point Mode; System Output Operation in Reset Mode; WIRING THE BOILERS
- Page 11 – WIRING TO MODULATING MOTORS; The BMC can operate up to four 4-20 mA modulating motors.; CONNECTING TO THE BMC-6X PANELS; Only 6-wire phone cable must be used for proper operation.; Connecting BMC to
- Page 12 – STARTUP; HISTORIES; MENU SEQUENCE
- Page 13 – SYSTEM SETTINGS1; MAINTENANCE
- Page 14 – PROGRAM CHANGE SETTINGS; STARTUP SEQUENCE; SENSOR TYPE; Set Point °F, Set Point; EMS INPUT MODE (AVAILABLE IN SET POINT ONLY); mA Adjustable from 70; The 4mA can be set to any temperature between 70oF to 200oF.; SELECTING THE OUTPUT TYPE
- Page 15 – SELECTING THE MODULATING MODE; Prove, DHW Without Priority, DHW With Priority
- Page 16 – SENSOR FAULT; RESET MODE; SETTING THE CONTROL TO FACTORY DEFAULTS; screen appears. The Display will direct you to the Startup menu to
- Page 17 – SEASON; Summer; Adjustable from 70; RESET RATIO; If; Adjust the RESET RATIO in cold weather.; If the ambient building
- Page 18 – OUTDOOR CUTOFF TEMPERATURE; MINIMUM WATER TEMP
- Page 19 – GAIN; MUST; Purge Delay
- Page 20 – LAG DELAY; Adjustable from 0min to 60min; Lag Delay; STANDBY DELAY; Adjustable from 1min to 60min; A boiler can be set to be a Standby boiler using the Stage Menu.; Adjustable from 0min to 360min; SETBACK; Adjustable from 0F
- Page 21 – LAST STAGE HOLD; AVOIDING CONFLICTING BOILER LIMITS
- Page 22 – SET TIME; HISTORY
- Page 23 – SYSTEM & OUTDOOR SENSOR TRIM; Adjustable from 0sec to; OUTPUT TRIM
- Page 24 – CONFIGURATION; DISPLAY; DISPLAY BOILER MODULATION STATUS
- Page 25 – DISPLAY MESSAGES; BOILER STAGE SETTINGS; STAGE; MODE
- Page 26 – Auto; disable units that are being serviced.; On; boiler will immediately start firing and modulate to 100%.; COPY SETTINGS - BOILER A ONLY
- Page 27 – TROUBLESHOOTING
- Page 28 – Boilers are Short-Cycling; - Increase the Lag Delay only if all boilers tend to short-cycle.; System is Overshooting or Undershooting; - If the system is overshooting reduce the Gain.
- Page 29 – MULTIPLE MODULATING BOILERS; DIRECT HEATING PIPING DIAGRAM
- Page 30 – DIRECT HEATING WIRING DIAGRAM; Outputs
- Page 31 – EXTERNAL 4-20MA SET POINT
- Page 32 – SPECIFICATIONS; BMC SPECIFICATIONS; Heating system sensor -35; BMC-6X SPECIFICATIONS; Modulating Output Types:
1
BMC and BMC-6X Installation and Operation Manual
BMC
SYSTEM
A
B
C
D
Full Modulation Sequencing Control
1
2
RUN
PROGRAM
FOR ALL CIRCUITS
120VAC, 6A RESISTIVE
OUTPUT RATINGS:
1A PILOT DUTY, 15A TOTAL
115VAC 60Hz , 30VA MAX
INPUT RATINGS:
USE COPPER WIRE,
DO NOT APPLY ANY VOLTAGE
TO INPUT TERMINALS
3
4
5
6
7
8
9 10 11 12
13
15
14
17
16
18
22
20
19
21
24
23
29
25
27
26
28
32
30 31
L N
-
+
+
T
T
O
O
RS-485
mA
GND
VLT
SYS
A
B
C
D
PWR
CUR / VLT
A
-
+
+
mA
GND
VLT
-
+
+
mA
GND
VLT
-
+
+
mA
GND
VLT
+
mA
TEMP
OUTDOOR
O
O
TEMP
SYSTEM
EXTENSION
MODULE
CUR / VLT
B
CUR / VLT
C
CUR / VLT
D
CLASS 1 WIRE ONLY.
---
---
SYSTEM
PROVE
SHUTDOWN
/TSTAT
/SETBACK
ENCLOSED
ENERGY
MANAGEMENT
EQUIPMENT
LISTED
99RA
CAUTION
: RISK OF ELECTRIC SHOCK
More than one disconnect switch may be required
to de-energize the equipment before servicing.
C
US
• INSTALLATION AND OPERATION INSTRUCTIONS MANUAL
BMC
AND
BMC-6X
HYDRONIC MODULATING BOILER CONTROL AND EXTENSION
This Weil McLain control is strictly an operating control; it should never be used as a
primary limit or safety control. All equipment must have its own certified limit and safety
controls required by local codes. The installer must verify proper operation and correct any
safety problems prior to the installation of this Weil McLain control.
WARNING
Part Number 550-100-072/0408
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Summary
2 BMC and BMC-6X Installation and Operation Manual BMC LAYOUT . . . . . . . . . . . . . . . . 3 BMC OVERVIEW . . . . . . . . . . . . . . 4 Reset Ratio/Outdoor Reset . . . . . . . . . . 5 Make Sure You Have the Right Control . . 6 INITIAL SETUP . . . . . . . . . . . . . . . 6 Selecting the System Fea...
3 BMC and BMC-6X Installation and Operation Manual BMC SYSTEM A B C D Full Modulation Sequencing Control 1 2 RUN PROGRAM FOR ALL CIRCUITS 120VAC, 6A RESISTIVE OUTPUT RATINGS: 1A PILOT DUTY, 15A TOTAL 115VAC 60Hz , 30VA MAX INPUT RATINGS: USE COPPER WIRE, DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS 3...
4 BMC and BMC-6X Installation and Operation Manual BMC OVERVIEW SEQUENCES UP TO 4 FULLY MODULATING STAGES. The BMC is the perfect control whenever multiple fully modulating stages are required for hydronic heating applications. The BMC controls the on/off and the modulation of each stage to maintain...
