TRIAL RUN CONTROL METHOD FOR HOT WATER HEATING SYSTEM

PROBLEM TO BE SOLVED: To provide a trial run control method to shorten a time required for a trial run for a hot water heating system and to automate a trial run. SOLUTION: Terminal information (a rated quantity of heat, a demanded temperature, a holding temperature, a pressure loss level) is outputted to a thermal source machine controller 4 from terminal controllers 32a-32d before a trial run. The order of the heating terminals 3a-3d to effect water filling according to a high pressure loss level is set. Individual opening control of thermal valve systems 151-154 is effected according to the order, and water filling is started by operation of a circulation pump 14. Opening decision of the thermal valve system is effected through comparison between a water supply quantity automatically supplied to a tank 13 during water filling and a holding water quantity. After all opening decisions, a combustion burner 22 is caused to effect combustion, and high temperature water is circulated and fed from a total valve system in an opening state to a total heating terminal. Based on a distribution ratio to each heating terminal set based on the pressure loss level, a quantity of heat supplied to each heating terminal is determined and outputted to each terminal controller. An operation deciding time is set by the degree of a temperature increase predicted by a quantity of feed heat and a rated quantity of heat, and operation decision of whether or not a heating operation action is normally effected by an actual increase in temperature due to a lapse of time is executed.