Grundfos UPS 43-44 BFC Bronze 115V 28.3 GPM 3-Speed Hot Water Recirculation Pump

Grundfos UPS B circulator pumps have a bronze pump housing for drinking water applications while Grundfos UP N have a stainless-steel pump housing. Both variants are recommended for underfloor heating systems as the pumped liquid may often become aerated, causing corrosion in cast iron pump housings. The pump is of the canned rotor type, i.e. pump and motor form an integral unit without shaft seal and with only two gaskets for sealing. The bearings are lubricated by the pumped liquid.

Features:

• Ceramic shaft and radial bearings.
• Carbon axial Bearing.
• Stainless steel rotor can and bearing plate.
• Corrosion-resistant impeller, Composite, PES.
• Bronze Pump housing.
• The motor is a 1-phase motor.
• No additional motor protection is required.

Technical Specifications:

• Approvals on nameplate: UL, CSA
• Pump housing: Bronze
• DIN W.-Nr. 2.1176.01
• Impeller: Composite, PES

Installation:

• Maximum ambient temperature: 104 Degrees F
• Ambient max at 176 Degrees F liquid: 176 Degrees F
• Maximum operating pressure: 145 PSI
• Flange standard: USA Oval
• Type of connection: Bronze Flange
• Pipe connection: 2 Bolt Flange
• Pressure stage: 10
• Port-to-port length: 8.5 in

Electrical data:

• Number of poles: 2
• Power input in speed one: 157 W
• Power input in speed Two: 179 W
• Max. power input: 203 W
• Rated power - P2: 0.161 HP
• Main frequency: 60 Hz
• Rated voltage: 1 x 115 V
• Current in speed 1: 1.4 A
• Current in speed 2: 1.7 A
• Current in speed 3: 1.8 A
• Capacitor size - run: 20° F/180 V
• Insulation class (IEC 85): F