McQuay IM 743 User Manual

Page 70 OM 780-2
Figure 31. Configuration 2: Constant-Speed Lead/Standby Pump Set
DPT
Differential pressure transducer
P1
Cooling Loads
Optional pressure-controlled loop bypass
P2
ChWR ChWS
a0153
Figure 32. Configuration 3: Constant-Speed Sequenced Pumps
DPT
Differential pressure transducer
P1
Cooling Loads
Optional pressure-controlled loop bypass
P2P3P4P5P6
ChWR ChWS
a0154
Figure 33. Configuration 4: Variable-Speed Single Pump
DPT
Differential pressure transducer
P1
Cooling Loads
VFD
Variable frequency drive
ChWR ChWS
a0155

McQuay IM 743 Specifications

General

Brand	McQuay
Model	IM 743
Category	Controller
Language	English