Customer turned the switch on and the burner started. Checked the fuel flow which is ok. While checking the system, the circulator for the main house was making a lot of noise. The water feed was adding water but the pressure was not increasing. Had the customer check the radiators. While adding water the system, found 2 pipes that froze and split. The pipes need to be repaired and the system purged. Repaired five areas that burst. Start a fill system. There is one area above a hard ceiling that is leaking very bad. The ceiling has to be taken down to finish repairing the leaks.