Weil-McLain BMC-6X operation manual Installation, Mounting the Enclosure

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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.

INSTALLATION

Each of the BMC or BMC-6X consists of three primary enclosure components.

The Enclosure Display Module: contains the display, buttons, LEDs and electric wiring terminals. It has two screws to hold it to the base. A program configuration switch, used to adjust BMC settings, is placed above the terminals. This switch is enclosed with the enclosure wiring cover for security. Wiring terminals are of the plug-in type to ease installation and removal.

The Enclosure Base: contains the holes to mount and hold the control against the wall or any flat surface. All other enclosure components mount on the base. The bottom section of the Enclosure Base contains the wiring chamber with knockouts on the bottom to easy installation.

The Enclosure Wiring Cover: seals the wires from the external environment. It has two screws to hold it the base and a hole to secure a lock on the wiring enclosure. A plastic web that separates the wiring chamber into high and low volt sections has been provided.

Enclosure Display Module

MOUNTING THE ENCLOSURE

Select a location near the equipment to be controlled.

The surface should be flat and sufficiently wide and strong to hold the BMC or BMC-6X.

Keep the control away from extreme heat, cold, or humidity. Ambient operating temperature is from 20 to 120°F.

• Remove the Enclosure Wiring Cover from the control enclosure by removing the two bottom screws.

Remove the Enclosure Display Module by removing the middle screws.

Screw the Enclosure Base to the surface through the upper and lower mounting holes on the back of the enclosure.

Replace the Enclosure Display Module and replace the middle screws.

• Do not replace the enclosure wiring cover until all wiring is done.

When purchasing a padlock for the enclosure, the maximum shank diameter should not exceed ¼"

Enclosure Wiring Cover

Enclosure Base

Hole for optional lock

Mounting Base

Display Mounting Screws Wiring Cover Mounting Screws

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Contents BMC Installation and Operation Instructions ManualContents Associated relay status BMC LayoutBMC Overview Understanding Operation Concept Reset RATIO/OUTDOOR ResetSelecting the System Features Initial SetupMake Sure YOU have the Right Control Mounting the Enclosure InstallationHeating System Sensor HSS Installation Install the SensorsOutdoor Sensor Installation Wiring the SHUTDOWN, TSTAT, or Setback Terminals 31 WiringWiring the Power Terminals 1 Wiring the SensorsWiring the Boilers Wiring the Prove Terminals 29Wiring the Domestic HOT Water Call DHW Terminals 29 Wiring the System Output Terminals 3Connecting to the BMC-6X Panels Wiring to Modulating Motors65 F Menu SequenceMaintenance System SETTINGS1System SETTINGS2 Startup Settings PROVE/DOMESTIC HOT Water DHW Boost Mode not Available with SetbackNormal, Parallel Default Normal Button MENU/System Startup/..../Boost ModeReset Mode Setting the Control to Factory DefaultsSensor Fault Button MENU/System Startup/..../Sensor FaultSeason Operating SettingsSET Point not Adjustable in EMS Mode Reset RatioMaximum Water Temp Outdoor Cutoff TemperatureOffset Minimum Water TempLead Boiler Rotation System SettingsPurge Delay GainSystem RUN-ON Standby DelaySetback Avoiding Conflicting Boiler Limits Button MENU/System Settings/More Settings/Last Stg HoldLast Stage Hold DAY/NIGHT SchedulesSET Time HistoryButton MENU/Histories Output Trim MaintenanceSOFT-OFF Delay System & Outdoor Sensor TrimDisplay Boiler Modulation Status ConfigurationButton MENU/Maintenance/Configuration DisplayButton Stage Boiler Stage SettingsMode Display MessagesButton STAGE/Ignition % Copy Settings Boiler a onlyIgnition % Modulation Start %Sensor Inputs TroubleshootingControl Operation Boilers are Short-Cycling Multiple Modulating Boilers Direct Heating Piping DiagramDirect Heating Wiring Diagram External 4-20MA SET Point Using 4-20MA EMS Interface BMC Specifications SpecificationsBMC-6X Specifications