% q& [6 O0 z+ v电工证不包括煤气,煤气证才可以碰煤气. 4 R$ |; _) |% S5 H4 ~8 R& jYour work need Gas Technician ticket. / M p7 s5 ?) ^# ]( PIf detector was installed outside the Furnance, nothing connect with it, that is OK. 1 m( \: F% H7 c2 E4 Y5 iIf at inside and you did have Safety-Tag on it, your gas valve will be shut off by Gas Tech and got fine.5 A5 ]5 d/ ?9 m0 S
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Good Luck!