7 U8 n+ z+ W; m J电工证不包括煤气,煤气证才可以碰煤气.3 v- i+ Q# V: j& F
Your work need Gas Technician ticket.( C# q% z+ w% m) u d( d$ U
If detector was installed outside the Furnance, nothing connect with it, that is OK. }8 d! K9 u! k% [
If at inside and you did have Safety-Tag on it, your gas valve will be shut off by Gas Tech and got fine. 7 r" N. ~7 ?% w8 i. R* j& K- G4 A0 G9 g' A3 X! z5 i+ C
Good Luck!