§ 2-41. Sewage lifts.

When it is necessary to use a sump system and sewage lift to receive the discharge from the waste or soil connection of fixtures, the same shall be arranged to be accessible. If discharged with compressed air, it shall be connected to the house drain on the sewer side of all leader or area drain traps and fixture connections, or may be connected to the house drain on the sewer side of the house trap. A separate trap and fresh air inlet must be provided on the inlet side of the sump and a four-inch pipe continued from drain discharging into sump up to and above roof for purposes of ventilation. Relief pipes must be provided on sewage receptacles of sumps. Traps of fixtures connected to sump systems must not be vented to vent lines which are used to ventilate traps of fixtures on gravity system. Sump systems should be entirely separate both as to discharge and venting from rest of plumbing system in buildings.