Watts AERCO Benchmark BMK750 Installation And Start-Up Manual page 44

Benchmark 750-6000 with Edge [i]: Install-Startup Manual
SECTION 2 – INSTALLATION
PUMP RELAY
Figure 2-12a: BMK750/1000 Pump Relay Location
PUMP RELAY
Figure 2-12b: BMK1500 – 6000 Pump Relay Location (BMK2500/3000 Shown)
See Figures 2-13 and 2-14 for wiring details.
The Benchmark pump relay (SPDT) contact is rated for:
•
10 A Resistive @ 277 VAC/28 VDC
•
1/3 HP N/O @ 120/240 VAC
•
1/6 HP N/C @ 120/240 VAC
•
480 VAC Pilot Duty @ 240-277 VAC Pilot Duty
Figure 2-13: Schematic – System Pump Start using Boiler Pump Relay
OMM-144_B • GF-217 • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
5/25/2020
POWER BOX
(Orange) – N/O
(Yellow) - COM
Pump Relay Terminals
Heating Pump
POWER BOX
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