The high-efficiency Grundfos Comfort PM range is a product for domestic hotwater re-circulation with lead free drinking water suitable pump housing for single- and 2-family houses powered by a high efficiency single-phase， 12-pole， permanent-magnet motor. The AUTOADAPT function has been developed for domestic hot-water systems with hot-water tanks as primary heating source. Features and benefits: 1 Unique AUTOADAPT feature saving up to 48% heat energy and 96% motor energy， 2 Flushing function， 3 Automatic legionella eliminating operation (if supported from the system)， 4 Automatic weekend and vacation detection， 5 Temperature control， 6 Continuous operation， 7 Quick and simple electrical installation due to the highly reliable ALPHA plug， 8 Wearless operation due to liquid lubricated bearing， 9 No leakage risk due to a static seal， 10 Easy-to-clean and lime-insensitive spheric rotor， 11 Easy maintenance and cleaning through the easy-to-separate pump head fitting almost all competitor pump housing， 12 Corrosion resistant lead free brass pump housing and (13) No additional motor protection necessary due to integrated motor electronics.

For domestic hot-water systems with hot-water tanks as primary heating source

AUTOADAPT feature saving up to 48% heat energy and 96% motor energy

Pipe connection: 1-1/4 in. NPSM

Maximum operating pressure: 145.04 psi， pressure stage: 10， port-to-port length: 3-1/8 in.

Maximum power input: 6-Watt， main frequency: 60 Hz， rated voltage: 1 x 115-Volt-230-Volt， pump housing: ecobrass

Pump only; Union kit (not included) required for complete installation in most applications

Compatible Union kits: 3/4 in. Female NPT Threaded Union Kit (Model# 529912， Internet# 314157111)， 1/2 in. Female NPT Threaded Union Kit (Model# 519850， Internet# 303754507)， 1/2 in. Female Copper Sweat Union Kit (Model# 529913， Internet# 314157114)， or ¾ in. Female NPT Threaded Union Shut Off Kit (Model# 519852， Internet# 303754533)