Weil-McLain GV GOLD Gas Fired Boiler:

1. GCM GOLD Control Module 2. Control transformer 3. Blower 4. Air pressure switch 5. Limit Switch 6. System circulator 7. Bypass circulator 7. Bypass circulator 8. Water temperature sensor a. Supply to system b. Return from system c. Combustion air inlet fitting d. Flue outlet e. Gas valve f.  Pressure / temperature gauge g. Flueway insection port cover h. Sensor hose trap i. Manual air vent j. Relief valve