7 e: u. e$ p0 O" Z# W1 U |/ L0 o/ ]电工证不包括煤气,煤气证才可以碰煤气.1 a5 J2 C% Z; M7 C6 R" z% J& |9 k0 b
Your work need Gas Technician ticket. 0 n' Q/ z# T5 o r% UIf detector was installed outside the Furnance, nothing connect with it, that is OK., Z2 W2 d. b/ \2 }% S+ y
If at inside and you did have Safety-Tag on it, your gas valve will be shut off by Gas Tech and got fine. - }! d H" ~9 |5 L7 P5 I: j8 w& e8 o- V3 O/ J
Good Luck!