Comfort System Hot Water Recirculation System. Valve may be mounted to the wall with supplied mounting screws if desired. 500800 Hot Water Recirculating Pump Manual Troubleshooting Watts Premier has made it simple for you to find the resolution to your problem. Comfort valves / sensor valves close once hot … MY 9-year- old Grundfos hot water recirculating pump suddenly quit sending hot water to the farthest hot water faucet. To obtain service under this warranty, the Ensure that the pump's protective cover is in place for outside installations. Two weeks later, a new problem appears. The plumber mentions that the check valve inside is not necessary but I can leave it. up15-10su7p water pump pdf manual download. A hot water recirculating pump is convenient and adds comfort, as it means getting hot water faster when you turn on the hot tap. I checked online, and am guessing I need a new bypass valve. So I think the problem is not with the pump. 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 … 10. The Grundfos MQ is a non-submersible pump. Both of these systems use a comfort valve or sensor valve which gets installed at the farthest sink from the water heater. Re: grundfos cs-1 comfort system; Author: Paul48 (CT) It's not about doing it wrong....the valve has to have check valves in it,their way of troubleshooting it confirms that.Without knowing exactly what is going on,I wouldn't feel comfortable without putting an expansion tank in unless I … 2941 Brighton Road Boulevard TLC No. The pump is installed correctly and the lines into and out of the pump are both hot. Page 35 GRUNDFOS Kansas City GRUNDFOS Canada GRUNDFOS México 9300 Loiret Blvd. and not by Grundfos' warranty. There was a check valve installed horizontally just before the tank, so now I have 2. 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. 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. 15 Lenexa, Kansas 66219 Oakville, Ontario L6H 6C9 Canada Parque Industrial Stiva Aeropuerto Phone: (913) 227-3400 Phone: +1-905 829 9533 C.P. Close the cold water angle stop valve below the sink. 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. Do not start the pump unless it has been filled with water, or primed. 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