Weil-McLain BMC-6X operation manual Contents

BMC and BMC-6X Installation and Operation Manual

Contents

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

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