Yes, u are correct.. I have two pumps at the cb5036 feeding two exchangers at two water heaters then to furnace exchangers. I'm wanting to increase (by adding a pump) domestic hot water flow through the exchanger. thanks
1st...is this possable, i dont think you speed up the flow of water from your domestic side of things unless your supplier ups the size of your pipes or the delivery pressure?? (you may be able to increase the gpm by increasing the pipe size in your home as your meter is likely 3/4 or 1 inch..if you were to use that size of pipe to the exchanger and then from the exchanger to your hot water tank and then to your appliance, that may increase the flow...but if the water in these new pipes cool down they will be holding more water and it will take the increase flow just a long as before to move the extra cool water in the pipes)
2nd ...why , if your problem is your wife has to wait a few min. for the hot water to get to the tap...move the exchanger closer to the tap in question or, if you have the plate exchanger siphoning through the hot water tank, i have heard of folks that put a circulating pump on the domestic side to keep the hot water circulating in the house hold lines...allthough i find this is a waste of time, energy and money
3... if you cant heat water fast enough to supply your demand (and your furnace still has a supply of hot water available) you need a bigger exchanger
OR..have i missed the subject completely (as i have been know too)