LAARS Mighty Therm HH-PH (Sizes 175-400) - Installation, Operation and Maintenance Instructions User Manual

Page 17

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Mighty Therm HH-PH Hydronic Boilers

Page 17

Figure 28. Typical Example of Wiring Schematic, System 1.

TYPICAL WIRING DIAGRAM:

IGNITION SYSTEM NO. 1 - STANDING PILOT

ON/OFF OR MECHANICAL MODULATION

Example shown: HH and PH Hydronic Boilers (175-250) Version B

Natural or Propane Gas

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