![]() You are correct that a variable speed pump should slow down to supply the demand and never shut off as long as there is a demand. This video shows what I am experiencing, but I have longer cycles: I went with a larger Amtrol ST-12 thinking it would help maintain a bigger buffer of pressure and smooth out the pump engagement, but maybe it is taking a little too much work off the pump slowing the feedback loop that the pump depends on. I might give a smaller pressure tank a try. I imagine if I had much higher flow, or a lower set pressure, it might stay on longer or continuously. My theory is now that there is more "elasticity" in the system that allows pressure to be maintained within the 10psi target band of the pump for longer so it takes breaks. It seemed to cycle a lot less before I introduced the external pressure tank. I just spoke with their distributor and he told me that this seems normal, but my understanding was that the pump should "slow down" to maintain a constant pressure. It clearly has speeds, as the pressure settings on the pump create audibly different frequencies. I thought the speed was supposed to be variable and expected it to hold a steady pressure at whatever speed was needed. Maybe it's unnecessarily stressing me out, but I don't like the sound of the pump turning on and off. My measured pressure seems to ping-pong from 60-70psi as the pump goes on and off. ![]() ![]() With 2 taps open wide, the pump clicks on for a mere 5-10 seconds, and then stays off for around 30, before cycling back on. Internal pressure tank, and external pressure tanks set to 70% of that = 50.75psi. Pump outlet pressure set and measured 72.5psi. We hope we have provided you with the information you need to carry out a quick and trouble-free installation with perfect results.I had a chance today to drain and triple-check my pre-charges were set to exactly the recommended pressure. This concludes our look at the 3-step installation process of the SCALA2 water booster pump. The easy set-up process is made possible by the intelligent pump control, which enables SCALA2 to detect any change in water pressure and adjust operation to compensate for these variations instantly. If the pressure is adequate here, you can rest assured that it is perfect in all taps. Simply use the control panel to set the required discharge pressure level and check the water pressure at the furthest tapping point – preferably a shower, as this is where the homeowner will experience the water pressure most directly. Then connect the pump to the rigid piping using the flexible hoses. To avoid this, we recommend placing vibration-damping feet underneath the booster and fixating all rigid pipes. But all pumps vibrate, and vibrations from a pump can be transferred to floors, walls and pipes, creating noise, if it’s not installed correctly. SCALA2 is one of the most silent boosters in its class. Once primed, connect SCALA2 to the power outlet and it will start automatically, delivering the default pressure of 44 psi throughout the system.Ī quick note on noise-reduction before we move on: If the pump has to boost water from a depth of below 19.6 feet, you may need to add another 0.37 gallons of water. Simply fill the pump housing with 0.37 gallons of water, using the extra large priming hole. SCALA2 is a self-priming pump, which means there is no need to fill the entire suction line. Start out by bolting the booster to the floor in the position you have marked.Ĭonnect the water pipes using the flexible connections - and tighten by hand. If the operating conditions check out, you are ready to install. You should also ensure easy access to a power outlet with the right supply voltage as well as a drain or a drip tray to lead away condensation if the surface is not resistant to water. ![]() However, we recommend always leaving enough space for service and maintenance. SCALA2 features a compact design, which means that it will fit tightly inside spaces such as kitchen cupboards. If the temperature drops below 32 degrees Fahrenheit, the water booster pump must be protected against frost. SCALA2 is fit for both indoor and outdoor installation, but the ambient temperature should not exceed 131 degrees Fahrenheit. This video will take you through the three basic steps of a successful installation: preparation, installation and set-up.īefore installing SCALA2, you will need to make sure that the operating conditions are suitable. SCALA2 is a fully integrated water booster pump designed for easy installation.
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