本帖最后由 爱城一粒沙子 于 2011-8-19 06:40 编辑 ( |! g& M# t5 L, w2 O( e2 c. F# N5 H& W4 h9 v _7 N) m6 j3 P4 L
电工证不包括煤气,煤气证才可以碰煤气.' ~6 u6 B5 _" z
Your work need Gas Technician ticket.5 L- F' b- y$ H1 E
If detector was installed outside the Furnance, nothing connect with it, that is OK. $ S8 t% E/ a; a5 x4 wIf at inside and you did have Safety-Tag on it, your gas valve will be shut off by Gas Tech and got fine.- K! z% o N( M& L
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Good Luck!