Rockwell Automation 20L-LL PowerFlex 700L Liquid-to-Liquid Heat Exchanger - Manual (Page 19)

Installation 1-9
PowerFlex 700L Liquid-to-Liquid Heat Exchanger User Manual
Publication 20L-UM002A-EN-P
AC Supply Source
Considerations PowerFlex 700L Liquid-to-Liquid Heat Exchangers are suitable for use on a
circuit capable of delivering up to a maximum of 5,000 rms symmetrical
amperes or used on a circuit in conjunction with the appropriate current
limiting devices.
Fuses and Circuit Breakers
Installation wiring requires the addition of circuit protection and
disconnects as required by code.
• Recommended Fuse Types: UL Class J, CC, T or Type BS88
• Recommended Circuit Breakers: Inverse time or instantaneous trip
circuit breakers or equivalent
Input Power Conditioning
Certain events on the power system supplying the heat exchanger can cause
component damage or shortened product life. They are:
• The power system has power factor correction capacitors switched in and
out of the system, either by the user or by the power company.
• The power source has intermittent voltage spikes in excess of 6000 volts.
These spikes could be caused by other equipment on the line or by events
such as lightning strikes.
• The power source has frequent interruptions.
General Grounding Requirements
The heat exchanger Safety Ground - PE must be connected to system
ground. Ground impedance must conform to the requirements of national
and local industrial safety regulations and/or electrical codes. The integrity
of all ground connections should be periodically checked.
The Safety Ground - PE is the safety ground for the heat exchanger that is
required by code. This point must be connected to adjacent building steel
(girder, joist), a floor ground rod or bus bar. Grounding points must comply
with national and local industrial safety regulations and/or electrical codes.
Wiring the Heat Exchanger To access terminals for electrical connections, open the electrical box door
by using a flat blade screwdriver to turn its locking mechanism
counterclockwise one-quarter turn.
Maximum Operating Input Amps
Minimum Recommended
Protection Rating (See Nameplate)
115 VAC, 1 Phase, 15.8 amps 20 amps
230 VAC, 1 Phase, 8.4 amps 12 amps