AERCO BMK 3.0 LN Nat. Gas APRIL 2009 - Manual (Page 113)

APPENDIX H
H-7
CLOSURE SW ITC H
PR OOF OF
LO W G AS PRESS. SW .
BLOW ER P ROOF S W.
SAFETY
IGN ITO R
WAT ER LEVEL PROBE
FLAM E ROD
HIG H G AS PRESS. S W.
PURGE
POSITIO N
IGN ITION
POSITIO N
SWIT CH
SWIT CH
BLK
YEL
WHT
RED
GRN
BLU
GND
321
351
352
361
364
365
362
SHUTOFF VAL VE
SH IEL D
360
359
6 PI N CONNECT OR
FRO M
358
}
FR OM I/O BOX
142
142
SHUTOFF VAL VE
SAFETY
{
BLO CKED AIR IN LET SW.
SOLE NOID
VALVE