Replacement pump and burner switch arm contacts with terminal panel (4 pages)
Summary of Contents for Xylem McDonnell & Miller MM-704B
Page 1
INSTRUCTION MANUAL MM-704B No. 2 Switch Applications: For series 47, 247, 63, 51, and 53 water feeders to add the low water cut-off function. No. 2 Switch OPERATION Electrical Ratings ® Motor Switch Rating (Amperes) Voltage Full Load Locked Rotor Pilot Duty 120 VAC 10.2...
Page 2
The No. 2 Switch will help to maintain a minimum water level in the boiler during normal operation. SCHEMATIC OF SWITCH OPERATION The switch will shut off the burner in the event the boiler water level falls. Once the water level is Low Water Water restored to its normal level, the switch will allow...
Page 3
STEP 2 - Electrical Wiring a. Using the flathead screwdriver, remove the two (2) screws that secure the switch housing (E). FIGURE 1 b. Using copper wire only, follow the wiring Used as a Mainline Switch diagrams in Figure 1 to wire the No. 2 and/or Low Water Alarm Neutral Switch.
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