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Installing a Vigas 40 with 1000 gallons storage. Using 1 1/4 copper lines and the boiler and tank are within 5 feet of each other. This is only to move water from boiler to tank- nothing else. How do I figure the pump size? thanks
I have a 40 kW boiler. My loading unit uses a Grundfos 15-58 3 speed. Also have 1-1/4 pipe, and tanks close to boiler. I use it on low speed with no issues.