My new indoor boiler is located some 50 feet away from my oil boiler and the system zone valves. So the hot water must travel through 50 feet of 1 1/4" black iron pipe before it gets to be used in the system. My question is whether i should try to insulate (foam insulation) this 50 feet of pipe so that I do not lose too much heat before it gets used in the system? Does 1 1/4" black iron pipe have a high heat loss? The piping is all indoors and would never be lower than 20 degress celsius room temperature.