Using the manufacturer's performance curves, a system balancing method involves pre-setting the valves to achieve optimum system flow balance (at minimum horsepower). Deppmann for any questions or your Bell & Gossett needs.A circuit setter is a calibrated balancing valve designed for pre-set proportional system balance. Required ToolsĮxample of the Circuit Setter Balance Valve Calculator:Įxample of the Circuit Setter Balance Valve: This concludes the exercise of reading, adjusting, and setting our Bell & Gossett manual balance valve. In this example, it was set at 15% closed to achieve the design GPM. We will disconnect the hoses and adjust the memory stop on the valve. Once we have achieved the 11GPM design flow rate across the valve. As we close the valve, we will take multiple readings across the balance valve to close or lower the differential between the high and low side of the valve. We will begin to adjust the balance valve by closing or increasing the percentage closed on the valve. This reading is much higher than the desired 11GPM design flow rate. In this case, the first reading taken in the 100% open position was 33GPM. When using this differential on B&G Circuit Setter Balance Valve Calculator, it will give you the actual flow across that balance valve. We will then calculate the differential between the high and low side test ports of the B&G manual balance valve. Now that we have everything to take a reading across the valve we will demonstrate how to properly connect and take readings on the manual balance valve from the high side and low side integral test ports of the balance valve. All readout kits feature a compound gauge that reads in feet of water and PSI and are equipped with hoses, readout probes, carrying case, and Circuit Setter Balance Valve calculator. We will need a Bell & Gossett RO-1-60 readout meter. We will need a few industry tools to walk through this exercise. This became the catalyst we needed to read the flow, adjust the B&G Circuit setter, and set the valve to the design flow of 11GPM. We found the blueprints to the building and quickly discovered the required design flow for this heating coil was 11GPM. The coil associated with the B&G balance valve was loud (velocity noise) and had difficulty maintaining the condition space. The Bell & Gossett (B&G) balance valve was found to be in the 100% open position. The example we are using today is a manual balance valve across a heating coil. In this Service Tip of the Month, we will be discussing and demonstrating the operation of reading, adjusting, and setting a Bell & Gossett Balance Valve.
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