Watts AERCO Benchmark Platinum 750 Reference Manual page 54

Benchmark Platinum with Edge [II]: Reference Manual
SECTION 5: BENCHMARK PLATINUM 4000-5000N PART LIST
Item # Qty Part # Description
CONTROLS (continued)
Temperature Sensor, Dual
15 1 61056
Thermocouple
16 1 59178 Air Vent: 1/8 NPT
17 1 123863 Valve: Ball 1/8" NPT
69126 
18 1 Low Water Cutoff
19 1 64081 ECU (for O
20 1 65085 Ignition Transformer
BURNER-BLOWER ASSY –
See
BMK 4000 – 26017-TAB, BMK 5000N – 26018-TAB
58195-1 
Blower 480 V BMK 4000/5000N
22 1
58195-2 
Blower 208 V BMK 4000/5000N
23 1 97087-72 Flex Gas Tube 72" (1.83 m)
24 1 88003 O-Ring, #2-339
25 1 88014 Air Filter, 6" X 12"
26 1 81215 Blower/Plenum Gasket
27 1 81216 A/F Valve–Blower Gasket
24667-8 
BMK 4000 A/F Valve Assy.
24696-3  BMK 5000N A/F Valve Assy
28 1
BMK 4000/5000N Dual Fuel A/F

24696-4
Valve Assy

Replacement Kit and/or Catalog number
22 23
UPPER-RIGHT REAR VIEW
AERCO International,
Inc. Blauvelt, NY
10913
OMM-0138_D • GF-212 • 2/24/2021
Sensor, behind cover)
2
full diagrams below:
19
20
Benchmark 4000 & 5000N with Edge [ii] Part List
BMK 4000 – 29422-TAB Rev C
BMK 5000N – 29427-TAB rev D
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
HOT WATER OUTLET
15
18
25 24 28 27
LEFT SIDE VIEW
16 17
26 22
8/27/2020
Sheet 2 of 5
Page 54 of 91