Circulator Pumps B4 25/6-180

𝗕𝗿𝗶𝘁𝗧𝗵𝗲𝗿𝗺 𝗕𝟰 𝗖𝗶𝗿𝗰𝘂𝗹𝗮𝘁𝗼𝗿 𝗣𝘂𝗺𝗽

The same pump as the B3 in the compact body, for 180 mm port to port and for spaces a standard pump will not fit.

𝗨𝘀𝗲 𝗶𝘁 𝗳𝗼𝗿: everything the B3 does: secondary hot water returns, cylinder loops, hotel and care home return loops, commercial kitchens, calorifier circuits and cold potable circulation · airing cupboards, boxed in cylinder cupboards and plant room corners where a standard shaped pump will not go and the control panel still has to be reachable · 180 mm port to port pipework

𝗥𝗶𝗴𝗵𝘁 𝗳𝗼𝗿 𝘆𝗼𝘂 𝗶𝗳

• The water is drinkable, so the body needs to be bronze

• You want the pump to match its output to demand instead of running flat out

• Your pipework measures 180 mm between the union centres, or the space around the pump is tight

𝗤𝘂𝗶𝗰𝗸 𝗳𝗮𝗰𝘁𝘀

Connection 1 1/2" union · Port to port 180 mm · Max head 4 to 7 m · Max flow 2.6 to 3.7 m3/h · Power 5 to 47 W · EEI 0.17 to 0.22 · Max pressure 10 bar · IP44 · TF 95C · Class F · Bronze body · Four models at 180 mm · 6 year guarantee when you register the pump

𝗡𝗶𝗻𝗲 𝗽𝗿𝗼𝗴𝗿𝗮𝗺𝘀, 𝗮𝗹𝗹 𝘀𝗲𝘁 𝘄𝗶𝘁𝗵 𝗼𝗻𝗲 𝗯𝘂𝘁𝘁𝗼𝗻

Same set as the B3: AUTO, constant pressure CP1 and CP2, proportional pressure PP1 and PP2, three fixed speeds and night mode at 5 W.

𝗚𝗼𝗼𝗱 𝘁𝗼 𝗸𝗻𝗼𝘄

The control panel sits where it can still be reached once the pump is in, so the B4 goes into concealed and confined spaces that a standard shaped pump will not fit. Bronze body, so it suits drinking water. Down to 5 W when demand is low. Electrical and thermal protection is built in. Insulation jacket in the box at no charge. If your pipework measures 130 mm between the union centres, you want the B3 instead.

𝗕𝟭, 𝗕𝟯 𝗼𝗿 𝗕𝟰? All three are bronze, for drinking water. B1 has three fixed speeds and is the cheapest. B3 and B4 have nine programs and adjust their own output, using far less power.

𝗕𝟯 𝗼𝗿 𝗕𝟰? Same pump inside, nine programs, same job. Two differences. The B3 is the standard body at 130 mm port to port. The B4 is the compact body, built to fit where a standard looking pump will not go, at 180 mm port to port. Measure between the centres of your two unions and look at the space around the pump, and the choice makes itself.

𝗥𝗲𝗽𝗹𝗮𝗰𝗲𝘀: Grundfos UPS 25-60 B and UPS 15-50N, Wilo Star-Z 25/6, SB30 and SB30G, DAB Evosta 2 SAN and EVO VS 65/150 B, Lowara Ecocirc Basic N and Ecocirc M 25-6 N, Stuart Turner 15/60B DHW and more.

𝗜𝗻 𝘁𝗵𝗲 𝗯𝗼𝘅: pump, set of nuts, 1.3 m cable with UK plug, insulation jacket at no charge, datasheet, in a sturdy box.

Figures are from the BritTherm datasheet for each model. Check the datasheet and the fitting instructions before you order, and have the pump fitted by a competent person. Guarantee subject to registration and the guarantee terms.

• Set of nuts
• 1.3m cable with a UK plug
• Datasheet
• Packaged in sturdy box
• Free of charge Insulation Jacket