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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 Features. . . . . . . 6
INSTALLATION . . . . . . . . . . . . . . . 7
Mounting the Enclosure . . . . . . . . . . 7
Install the Sensors . . . . . . . . . . . . . 8
Heating System Sensor (HSS) Installation. . .8
Outdoor Sensor Installation . . . . . . . . . . 8
Wiring. . . . . . . . . . . . . . . . . . . . 9
Wiring the Power (Terminals 1, 2) . . . . . . .9
Wiring the Sensors . . . . . . . . . . . . . . .9
Wiring the Shutdown, Tstat, or Setback (Terminals
31, 32) . . . . . . . . . . . . . . . . . . . . .9
Wiring the Prove (Terminals 29, 30) . . . . . 10
Wiring the Domestic Hot Water Call DHW
(Terminals 29, 30) . . . . . . . . . . . . . . 10
Wiring the System Output (Terminals 3, 4). . 10
Wiring the Boilers . . . . . . . . . . . . . . 10
Wiring to Modulating Motors . . . . . . . . . 11
Connecting to the BMC-6X Panels. . . . . . 11
MENU SEQUENCE . . . . . . . . . . . . . 12
Startup Settings . . . . . . . . . . . . . . 14
Program Change Settings . . . . . . . . . . 14
Startup Sequence . . . . . . . . . . . . . . 14
Sensor Type . . . . . . . . . . . . . . . . . 14
EMS Input Mode (Available In Set point Only) 14
Selecting the Output Type . . . . . . . . . . 14
Selecting the Modulating Mode . . . . . . . 15
Prove/Domestic Hot Water (DHW) . . . . . . 15
Shutdown/Tstat/Setback Mode . . . . . . . . 15
Boost Mode (Not Available with Setback) . . 15
Sensor Fault . . . . . . . . . . . . . . . . . 16
Setting the Control to Factory Defaults. . . 16
Operating Settings . . . . . . . . . . . . . 17
Program Change Settings . . . . . . . . . . 17
Season . . . . . . . . . . . . . . . . . . . . 17
Set Point (Not Adjustable in EMS Mode). . . 17
Reset Ratio. . . . . . . . . . . . . . . . . . 17
Outdoor Cutoff Temperature . . . . . . . . . 18
Offset. . . . . . . . . . . . . . . . . . . . . 18
Minimum Water Temp . . . . . . . . . . . . 18
Maximum Water Temp . . . . . . . . . . . . 18
System Settings . . . . . . . . . . . . . . 19
Gain . . . . . . . . . . . . . . . . . . . . . 19
Lead Boiler Rotation . . . . . . . . . . . . . 19
Purge Delay . . . . . . . . . . . . . . . . . 19
Lag Delay . . . . . . . . . . . . . . . . . . 20
Standby Delay . . . . . . . . . . . . . . . . 20
System Run-On . . . . . . . . . . . . . . . 20
Setback. . . . . . . . . . . . . . . . . . . . 20
Last Stage Hold . . . . . . . . . . . . . . . 21
Day/Night Schedules. . . . . . . . . . . . . 21
Set Time . . . . . . . . . . . . . . . . . . . 22
History . . . . . . . . . . . . . . . . . . . 22
Maintenance . . . . . . . . . . . . . . . . 23
System & Outdoor Sensor Trim . . . . . . . 23
Soft-Off Delay . . . . . . . . . . . . . . . . 23
Output Trim. . . . . . . . . . . . . . . . . . 23
Configuration . . . . . . . . . . . . . . . . . 24
Display . . . . . . . . . . . . . . . . . . . . 24
TROUBLESHOOTING. . . . . . . . . . . . 27
DIRECT HEATING PIPING DIAGRAM . . . 29
DIRECT HEATING WIRING DIAGRAM . . . 30
EXTERNAL 4-20MA SET POINT . . . . . . 31
USING 4-20MA EMS INTERFACE . . . . . 31
SPECIFICATIONS . . . . . . . . . . . . . . 32
BMC Specifications. . . . . . . . . . . . . 32
BMC-6X Specifications . . . . . . . . . . . 32
Contents