Watts AERCO Benchmark BMK750 Operation And Service Manual page 38

Benchmark with Edge [I]: Operation-Maintenance Manual
SECTION 3 - START SEQUENCE
BMK5000 & 6000 Function Timing Chart For Proved Pilot Control System
Component
Edge [i] Controller
Scanner Power
Ignition Power
SSOV Power
Pilot Valve Closed
Pilot Valve Open
Ignition Transformer Off
Ignition Transformer On
UV Scanner Powered
UV Scanner "Ignored"
UV Scanner In Use
Relay 1 Coil
Relay 1 C-NC
Relay 1 C-NO
Relay 2 Coil Power from R1
Relay 2 Coil Power from SKP 15 POC
Relay 2 C-NC
Relay 2 C-NO
SKP15 Power from R1 Contacts
SKP15 Power from R2 contact and POC
C-NO
SKP15 Proof of Closure C-NC
SKP15 Proof of Closure C-NO
SKP25
Power through R1
Power through R2 and AUX
Proof of Closure C-NC
Proof of Closure C-NO
OMM-0145_A99 • GF-218 •
Standby
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
9/18/2019
Operating State
Pre-purge PFEP
T = 0 T = 30 T = 37
PFEP
MFEP
T = 44 Run
MFEP
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