Valve Operation If there is no hot water at the faucet or there appears to be too much hot water on the cold water side the following steps will determine if the valve is operating correctly: 1. So I think the problem is not with the pump. I checked online, and am guessing I need a new bypass valve. Close the cold water angle stop valve below the sink. MY 9-year- old Grundfos hot water recirculating pump suddenly quit sending hot water to the farthest hot water faucet. The plumber mentions that the check valve inside is not necessary but I can leave it. Ensure that the pump's protective cover is in place for outside installations. 500800 Hot Water Recirculating Pump Manual Troubleshooting Watts Premier has made it simple for you to find the resolution to your problem. The Grundfos MQ is a non-submersible pump. Comfort System Hot Water Recirculation System. To obtain service under this warranty, the Comfort valves / sensor valves close once hot … The installation 'instructions' for the Grundfos UP10-16 A PM BU/AC call for the sensor that 'trains the pump' by checking for hot water demand to be installed on the line flowing from the hot water heater to the hot water delivery line and specifies 8-20 inches from the outlet (20-50 cm.) Both of these systems use a comfort valve or sensor valve which gets installed at the farthest sink from the water heater. Homes that have on-demand or tankless water heaters, this is significant, since otherwise it would be a bit of a wait before the cold water clears out of the pipes and the hot water reaches you. 15 Lenexa, Kansas 66219 Oakville, Ontario L6H 6C9 Canada Parque Industrial Stiva Aeropuerto Phone: (913) 227-3400 Phone: +1-905 829 9533 C.P. Valve may be mounted to the wall with supplied mounting screws if desired. Page 35 GRUNDFOS Kansas City GRUNDFOS Canada GRUNDFOS México 9300 Loiret Blvd. Two weeks later, a new problem appears. Have you installed the Grundfos Comfort Series Instant Hot Water Recirculator or the WATTS Premiere Instant Hot Water Recirculator. 2941 Brighton Road Boulevard TLC No. The pump is installed correctly and the lines into and out of the pump are both hot. Grundfos will not be liable for damage or wear to products caused by abnormal operating conditions, accident, abuse, misuse, unauthorized alteration or repair, or if the product was not installed in accordance with Grundfos' printed installation and operating instructions. Do not use force when connecting the pipes to the pump. A hot water recirculating pump is convenient and adds comfort, as it means getting hot water faster when you turn on the hot tap. Do not start the pump unless it has been filled with water, or primed. 2. 10. These problems exist with thermostatic comfort valve recirculation systems according to nearly 100 professionals at the 2006 Southern California Annual Plumbing Heating Cooling Contractors trade show. Magically all of my problems seem to be solved--no more air in line and water hammer disappears. Do not remove the pressure tank from the pump unless it has been vented through the air escape valve. 66600 Apodaca, N.L. There was a check valve installed horizontally just before the tank, so now I have 2. up15-10su7p water pump pdf manual download. View and Download Grundfos Up15-10su7p installation and operating instructions manual online. Once you have installed your Instant Hot Water Recirculating System you can locate any issue you are experiencing here and we will walk you through step-by … and not by Grundfos' warranty. 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