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INSTRUCTION MANUAL

MM-206H

246746

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Summary of Contents for McDonnell & Miller 63 Series

Page 1: ...INSTRUCTION MANUAL MM 206H 246746...

Page 2: ...the diagram that represents your boiler c Crosses should be used at each right angle connection for inspection and cleaning d Make sure the blow down valves are full port e While the burner is operati...

Page 3: ...riser going to the radiation or to the compression tank IMPORTANT The horizontal equalizing pipe should be below the horizontal run going to the radiation If it is not an air pocket will be created a...

Page 4: ...te the installation as described in the low water cut off installation instructions 6 After all piping assembly has been completed refill the system with water turn on all electrical supply and bring...

Page 5: ...N C C N O N C C Neutral 120 V A C Supply Hot Low Water Alarm Burner Circuit Line Load SCHEMATIC OF SWITCH OPERATION Water Level Normal Burner On Alarm Off Low Water Alarm Terminals Low Water Cut Off T...

Page 6: ...k for a build up of scale or sediment between corrugations of the bellows b Cause Contacts are fused together Test Remove switch and operate manually to verify proper switch operation Solution Replace...

Page 7: ...es no longer operate properly If you choose to replace the switch es order the proper McDonnell Miller replacement switch or switch assembly and follow the Repair Procedure provided More frequent blo...

Page 8: ...ngs and other wear parts or consumables all of which are not warranted except as otherwise provided in the quotation or sales form will be free from defects in material and workmanship for a period of...

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