1. The plaintiff's claim is dismissed.

2. The costs of lawsuit shall be borne by the Plaintiff.

1. Basic facts

A. The Plaintiff is an insurer who has entered into a contract for business liability insurance with the facility owner (management) who owns the “Del” located in Gwanak-gu in Seoul Special Metropolitan City and C (hereinafter “the instant cartel”) with A as the subject-matter of insurance.

B. Around 00:35 on December 8, 2013, E and F of the instant accident were addicted to the U.S.carbon discharged from the gas boiler of the instant Moel on the same day, among those who were accommodated in the instant Moel No. 106 (hereinafter “the instant Moel”).

C. The structure of the instant Moel, the status of boiler facilities at the time of the accident, and the cause of the accident (1) of the instant Moel is one type of integration into two Dongs (A Dong and B Dong) with approximately approximately 110 cm away from the outside, namely, one building.

The outer space of the two buildings has a broom metal structure, and the B Dong underground room has a laundry room, and there was a window of the guest room to the passage through the stairs door of the underground washing room.

(2) In the boiler room A, a heating boiler using urban gas and a hot water boiler (the above two boilers were installed, hereinafter “the boiler”).

The exhauster connected to each of the boilers in this case was divided into two parts of the boiler room and passed through the boiler room wall, and the broom structure was installed up to approximately 170-200 cm from the wall gate of the building A and the broom structure connected to the ground to the ground through the ground. The end of the exhauster line was a Trick.

(3) After the instant accident, the National Institute of Scientific Investigation conducted a gas measurement test to analyze the causes of the instant accident. From 20 minutes after the boiler operation was discovered in the boiler room, the oxygen was detected, and the instant guest room.