Do no over You want to know if there is flow going through the pipe from one side of the pump to the other. Cost of replacing a circulating pump. determine flow direction. Damage to the casing O-ring and leak - age may result. The problem with this option is, due to hot and cold water sharing the same pipe, the water from the cold faucet may be lukewarm or take time to get cold, especially if you have a swamp cooler. To rotate the pump casing, remove the 4 motor screws. If pumps are piped in series, their heads will be additive, at the same flow rate. A circulating pump itself will typically cost between £90-£160. Now you should check the pump. kept in position, and rotate body to desired direction at 90° or 180° from the original position. If pumps are piped in parallel, the flow produced by each pump will be additive, at the same head of each pump. The SunSun JVP-202 Dual Wavemaker Pump has twin water pumps with rotatable nozzles. Under no circumstances should the pump be installed with the shaft vertical or where the An aqua-stat is mounted to the hot-water pipe. The water flows from the bottom of the boiler, through the pump then up to 4 zoned vertical pipes. With the arrow on the body pointing in direction of the flow, insert body capscrews and tighten evenly. Any cold water in the recirculation line is returned to the heater. Importance of knowing the "direction" of your flow I post this tidbit in the hope that it will prevent someone else from making the mistake that made my weekend more exciting than most. Simply spin casing to the proper flow direction desired as shown in Figure 4 and Figure 5. The pump must be installed with the motor shaft positioned horizontally. However, this system does have its drawbacks. The cost to replace a circulating pump will vary depending on the type and brand of pump, where you buy it from, and how easy or difficult it is to install. When rotating pump casing posi - tion, DO NOT detach motor housing from the casing. Grundfos circulator pumps can be installed in both vertical and horizontal lines. If you have a large aquarium you may need two smaller pumps instead of a single large water pump. A pump at the water heater moves hot water through the recirculation line. Flow direction Bronze or Stainless circulator/ pump Aquastat Timer valve expansion Domestic hot water return line Parameters for recirculation application An Aquastat, with a 5° F differential to control the pump, is recommended for optimal temperature stability. Indicated by the arrow stamped on the back of the pump As a rule of thumb the pipe that goes into the boiler at the lower point is the return line and you want to pump the water from the house to the lower part of the boiler. Arrows on the side or bottom of the pump housing indicate direction of flow through the pump. This allows you to direct water flow in two directions while only mounting a single pump on the glass. Then, with the installation cost added the total price can range from £150-£350. Most pumps for residential systems work off of 120 volts. A check valve must be installed in the line to ensure hot water only goes in one direction. These pumps typically cost somewhere in the $500 – $800 range, though exceptions do apply. I have a oil fired hydronic heating system, employing both a Taco 007 Circulator … The usage of a timer is recommended to limit the energy consumption. On models s25 to s57, h32 to h54 and series 1050 (1b to 2b), a gap between the bearing bracket and pump body (volute) is normal. Using circulation pumps and wave makers in a reef aquarium head will be 50GPM. If you have 120 volts on the terminal connections where the wires go to the pump then the aquastat is good and the relay is working as it should. For example, if one pump puts out 20GPM at 35 ft. and another puts out 30GPM at 35ft., the total flow at 35ft. Taco 007 Pumps Have a direction of flow. After replacing a B&G100 pump with a Taco007 pump, I became concerned about the direction of flow and from all that I have read so far, it seems that everything on my system has been running backward for at least the 16 years I have lived here.