AERCO BMK 3.0 LN Nat. Gas for Mass. only - Manual (Page 113)

APPENDIX H
H-5
BLOW ER P ROOF S W.
IGN ITOR
WA TER L EVEL PRO BE
FLAM E RO D
PURG E
POSITIO N
IGN ITIO N
POSITIO N
SWITCH
SWITCH
BLK
YEL
WHT
RED
GRN
BLU
GND 321
351
352
361
364
365
362
360
359
6 P IN CON NEC TO R
FRO M
358
}
FRO M I/ O BO X
142
{
SAFETY
SHUTO FF VALVE
HIG H G AS PRESS. SW.
LO W G AS PRESS. SW .
PR OOF OF
CLO SUR E SWIT CH
SHUTO FF VALVE
SAFETY
BLOC KED AIR INLE T SW.
SOLENO ID
VALVE