though it should be oriented within ±45° of vertical for optimal performance

which ignores the intended system sequence and safety design

If the vent is clear

System Longevity: Renews the modulating action of the pressure regulator to prevent compressor slugging

Bell & Gossett 103316LF Pump 319852-301 though it should be orientedThe Bell & Gossett 103316LF Pump is a high efficiency NBF 18S Bronze Wet Rotor Circulator engineered for open loop potable water systems and solar thermal applications. As a direct replacement for the 110223 303 (1 speed) model, this unit features a lead free bronze body designed to meet stringent plumbing codes while resisting mineral buildup and corrosion. Operating at a fixed 3000 RPM with a 1 25 HP motor, this 115Vac single phase pump delivers