Benchmark 750 – 1000 Boiler User Manual - INTERNATIONAL
CHAPTER 2 – INSTALLATION
OMM-0119_0A
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
Page
33
of
170
GF-130-I
Ph.: 800-526-0288
11/03
/2016
Figure 2-16: Schematic – System Pump Start using Boiler Pump Relay
If pump/valve load exceeds the above contact ratings, use a separate contact relay, as shown in
Figure 2-17.
Figure 2-17: Schematic – System Pump Start using a Separate Contact Relay
The Benchmark pump relay (SPDT) contact is
rated for:
•
10 A Resistive @ 277 VAC or 28 VDC
•
1/3 HP @ 120/240 VAC N/O
•
1/6 HP @ 120/240 VAC N/C
•
480 VA @ 240-277 VAC Pilot Duty
(Orange) – N/O
(Yellow) - COM
Heating Pump
Heating Pump
Pump Relay Terminals
(Orange) – N/O
(Yellow) - COM
Contact Relay
(Supplied by Others)
N
H
POWER PUMP(S)
FROM INDEPENDENT
FUSED CIRCUITS
Pump Relay Terminals
