Watts AERCO Benchmark BMK5000 Operation And Service Manual page 22

Benchmark Platinum-Edge [ii]: Operation-Service Manual
SECTION 3 - START SEQUENCE
BMK5000 & 6000 Function Timing Chart for Proved Pilot Control System
Component
Edge 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-0137_J •
12/20/2022
Standby
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
Operating State
Pre-purge PFEP
T = 0 T = 30 T = 37
PFEP
MFEP
T = 44 Run
MFEP
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