Weil-McLain BMC - Manuals - manualsarea.com

Page 2 - BMC and BMC-6X Installation and Operation Manual; Make Sure You Have the Right Control . . 6; Contents

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...

Page 3 - BMC; BMC LAYOUT

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...

Page 4 - BMC OVERVIEW

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...

Page 5 - UNDERSTANDING OPERATION CONCEPT; RESET RATIO/OUTDOOR RESET; F Outdoor; Type of Radiation in Building; Reset Ratio Curves; WARNING

5 BMC and BMC-6X Installation and Operation Manual UNDERSTANDING OPERATION CONCEPT The BMC has multiple operating modes that satisfy most hydronic systems. It can change the System Set Point based on outdoor temperature (Outdoor Reset) or it can modulate its stages to achieve an adjustable ﬁxed Set ...

Page 6 - INITIAL SETUP; SELECTING THE SYSTEM FEATURES

6 BMC and BMC-6X Installation and Operation Manual MAKE SURE YOU HAVE THE RIGHT CONTROL If you need the BCP-8W to do additional tasks that either are not listed or do not know how to set them, contact Weil McLain. INITIAL SETUP Setting an Initial Program will ease the conﬁguration of the BMC and wil...

Page 7 - INSTALLATION; The Enclosure Display Module:; MOUNTING THE ENCLOSURE; Select a location near the equipment to be controlled.

7 BMC and BMC-6X Installation and Operation Manual System Run-On • This feature lets the BMC run the SYS relay for a longer period after the boilers have been turned off. When this relay is used to control a pump, it helps in dissipating the excess heat from the boilers combustion chamber. INSTALLAT...

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

8 BMC and BMC-6X Installation and Operation Manual INSTALL THE SENSORS HEATING SYSTEM SENSOR (HSS) INSTALLATION LOCATING HSS • Put the Heating System sensor approximately 10' feet past the last boiler on the common supply header but before any major takeoffs. • The sensor must be located where it se...

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

9 BMC and BMC-6X Installation and Operation Manual WIRING WIRING THE POWER (TERMINALS 1, 2) • Bring the 120VAC 60Hz power wires through the bottom Knockout of the enclosure. • Class 1 voltages must enter the enclosure through a different opening from any Class 2 voltage wiring. • Connect the hot lin...

Page 10 - PROVE; DHW Call; System Output Operation in Set Point Mode; System Output Operation in Reset Mode; WIRING THE BOILERS

10 BMC and BMC-6X Installation and Operation Manual WIRING THE PROVE (TERMINALS 29, 30) • The Prove feature is provided to check system component operation and must be selected in the Startup Menu. See page 15. • A typical use of this feature is to check for pump ﬂow before ﬁring any boiler. • If th...

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

11 BMC and BMC-6X Installation and Operation Manual WIRING TO MODULATING MOTORS The BMC can modulate any combination of the following motors. The Output Type must be selected properly before connecting any output wires to avoid damage components. See Output Type on page 11. WIRING THE 4-20MA MODULAT...

Page 12 - STARTUP; HISTORIES; MENU SEQUENCE

12 BMC and BMC-6X Installation and Operation Manual ----------- SETTINGS ------------ Season Winter Set Point 70 F <System Settings> <Maintenance> <Histories> <System Startup> BACK SELECT BACK SAVE ------------- SEASON -------------- Winter Summer BACK SAVE ------------ SET P...

Page 13 - SYSTEM SETTINGS1; MAINTENANCE

13 BMC and BMC-6X Installation and Operation Manual ----------- SETTINGS ------------ Season Winter Set Point 70 F <System Settings> <Maintenance> <Histories> <System Startup> BACK SELECT BACK SAVE ---------------- GAIN -------------- +0 F [] BACK SELECT ---------- SETTINGS 1...

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

14 BMC and BMC-6X Installation and Operation Manual STARTUP SETTINGS PROGRAM CHANGE SETTINGS To be able to change the BMC settings the Program/Run Switch must be set to Program. The switch is located under the Enclosure Wiring Cover for security. The Enclosure Wiring Cover can be securely closed usi...

Page 15 - SELECTING THE MODULATING MODE; Prove, DHW Without Priority, DHW With Priority

15 BMC and BMC-6X Installation and Operation Manual SELECTING THE MODULATING MODE Normal, Parallel Default: Normal Button: MENU/<System Startup>/..../Modulating Mode • Some modulating boilers perform better as their modulation increases. For these units, it is advantageous to run one unit at h...

Page 16 - SENSOR FAULT; RESET MODE; SETTING THE CONTROL TO FACTORY DEFAULTS; screen appears. The Display will direct you to the Startup menu to

16 BMC and BMC-6X Installation and Operation Manual SENSOR FAULT All Off, All On Default: All On Button: MENU/<System Startup>/..../Sensor Fault The Sensor Fault will determine the operating status of all output stages that are set to Auto when a sensor reads Short or Open. BACK SAVE ---------...

Page 17 - SEASON; Summer; Adjustable from 70; RESET RATIO; If; Adjust the RESET RATIO in cold weather.; If the ambient building

17 BMC and BMC-6X Installation and Operation Manual OPERATING SETTINGS PROGRAM CHANGE SETTINGS To be able to change the BMC settings the Program/Run Switch must be set to Program. The switch is located under the Enclosure Wiring Cover for security. The Enclosure Wiring Cover can be securely closed u...

Page 18 - OUTDOOR CUTOFF TEMPERATURE; MINIMUM WATER TEMP

18 BMC and BMC-6X Installation and Operation Manual OUTDOOR CUTOFF TEMPERATURE Adjustable Off, from 20 º F/ to70 º C - 100 º F, On Default: 60ºF/ 16 º C Button: MENU/Set Point/Outdoor Cutoff in Set Point Button: MENU/Set Point/Offset/Outdoor Cutoff in Reset • If the outdoor sensor is installed, the ...

Page 19 - GAIN; MUST; Purge Delay

19 BMC and BMC-6X Installation and Operation Manual SYSTEM SETTINGS Button: MENU/<System Settings> The Settings 1 and Settings 2 menus provide access to adjusting and ﬁne-tuning the system for enhanced comfort and more fuel savings. The BMC behaves differently based on the selected Control Mod...

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

20 BMC and BMC-6X Installation and Operation Manual LAG DELAY Adjustable from 0min to 60min Default: 0min Button: MENU/<System Settings>/Lag Delay • The Lag Delay requires the previous stage to remain at 100% modulation for the full period of the Lag Delay before another Stage can be activated...

Page 21 - LAST STAGE HOLD; AVOIDING CONFLICTING BOILER LIMITS

21 BMC and BMC-6X Installation and Operation Manual • If Setback Input is selected as a Shutdown/Tstat/Setback Mode (See page 15), the Setback will not be activated unless a Short dry contact signal is received on the Shutdown/Tstat/Setback terminals ( 31 and 32 ) as a signal. • If Shutdown Input or...

Page 22 - SET TIME; HISTORY

22 BMC and BMC-6X Installation and Operation Manual SET TIME Button: MENU/<System Settings>/<More Settings>/Set Time Button: MENU/<System Settings>/<More Settings>/<Day/Night Schedules>/Set Time • Adjust the time by selecting Time from the menu and then scrolling throug...

Page 23 - SYSTEM & OUTDOOR SENSOR TRIM; Adjustable from 0sec to; OUTPUT TRIM

23 BMC and BMC-6X Installation and Operation Manual MAINTENANCE Button: MENU/<Maintenance> The Maintenance menu gives access to sensor and outputs trimming and Soft-Off. In addition, you'll have access to view the Startup conﬁguration settings. ALERT To be able to change the BMC settings the P...

Page 24 - CONFIGURATION; DISPLAY; DISPLAY BOILER MODULATION STATUS

24 BMC and BMC-6X Installation and Operation Manual CONFIGURATION Button: MENU/<Maintenance>/<Conﬁguration> • This menu option provides a consolidated view of the BMC's Startup and Stage settings. BACK NEXT ------ CONFIGURATION 1 ------ v1.00c Reset F Normal Day/Night Schedules All Off B...

Page 25 - DISPLAY MESSAGES; BOILER STAGE SETTINGS; STAGE; MODE

25 BMC and BMC-6X Installation and Operation Manual DISPLAY MESSAGES The BMC normal display layout reserved the second line for message indications. The following is a list of the most common Message Display Line information:• Summer The control is set to Summer. No heat is active. See Season on pag...

Page 26 - Auto; disable units that are being serviced.; On; boiler will immediately start firing and modulate to 100%.; COPY SETTINGS - BOILER A ONLY

26 BMC and BMC-6X Installation and Operation Manual Auto - The BMC will control the boiler’s operation to maintain the desired Set Point. Only boilers set to Auto can be Lead boilers. Standby Standby boilers can only be activated when all boilers in Auto have been at 100% modulation for a selectable...

Page 27 - TROUBLESHOOTING

27 BMC and BMC-6X Installation and Operation Manual TROUBLESHOOTING SENSOR INPUTS Display shows Sensor OPEN or SHORT When OPEN, Check the sensor is connected and the wires are continuous to the BMC. Finally follow the procedure for Incorrect Temperature or Pressure Display. When SHORT Remove the wir...

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.

28 BMC and BMC-6X Installation and Operation Manual • Boiler Mode Settings - The BMC will only modulate boilers their mode is set to Auto or Standby. Check if any boiler stage is set to Manual, Off, or Standby. See Mode on page 25. Boilers are Short-Cycling • Lag Delay - Increase the Lag Delay only ...

Page 29 - MULTIPLE MODULATING BOILERS; DIRECT HEATING PIPING DIAGRAM

29 BMC and BMC-6X Installation and Operation Manual MULTIPLE MODULATING BOILERS DIRECT HEATING PIPING DIAGRAM Outdoor Sensor System Sensor 120VAC Boiler 1 Boiler 2 Boiler 3 Boiler 4 Building Heating Loop BMC SYSTEM A B C D Full Modulation Sequencing Control 1 2 RUN PROGRAM DO NOT APPLY ANY VOLTAGE T...

Page 30 - DIRECT HEATING WIRING DIAGRAM; Outputs

30 BMC and BMC-6X Installation and Operation Manual MULTIPLE MODULATING BOILERS DIRECT HEATING WIRING DIAGRAM Boiler 1 Boiler 2 Boiler 3 Boiler 4 Boiler 1 Boiler 2 Boiler 3 Boiler 4 4 - 20 mA Signal Outputs Out door S ensor S y st em S ensor P ro v e Jumper D o Not r emo v e BMC SYSTEM A B C D Full ...

Page 31 - EXTERNAL 4-20MA SET POINT

31 BMC and BMC-6X Installation and Operation Manual MULTIPLE MODULATING BOILERS EXTERNAL 4-20MA SET POINT USING 4-20MA EMS INTERFACE Boiler 1 Boiler 2 Boiler 3 Boiler 4 Boiler 1 Boiler 2 Boiler 3 Boiler 4 4 - 20 mA Signal Outputs S yst em S ensor P ro ve Jumper D o Not r emo ve BMC SYSTEM A B C D Fu...

Page 32 - SPECIFICATIONS; BMC SPECIFICATIONS; Heating system sensor -35; BMC-6X SPECIFICATIONS; Modulating Output Types:

32 BMC and BMC-6X Installation and Operation Manual SPECIFICATIONS Voltage Input: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120 VAC 60 Hz Power Consumption: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....