Outback FM60 User Manual

900-0009-01-00 Rev D 9
Installation
Standards and Requirements
All installations must comply with national and local electrical codes; professional installation
is recommended.
IMPORTANT:
The charge controller is designed for indoor installation or installation inside a weatherproof
enclosure. It must not be exposed to rain and should be installed out of direct sunlight.
Rapid Shutdown
The FLEXmax 60 and FLEXmax 80 charge controllers are not to be installed on controlled
conductors of a PV Rapid Shutdown System (PVRSS). Controlled conductors are defined by
the 2017 National Electrical Code and may be different from local requirements.
Grounding
This product is intended to be installed as part of a permanently grounded electrical system as
shown in the wiring diagrams shown in Figure 6, Figure 7, and Figure 8.
o
The FLEXmax equipment ground is marked with this symbol:
The following important restrictions apply unless superseded by local or national codes:
o
The negative battery conductor should be bonded to the grounding system at only one point in the
system. If a GFDI is present, the battery negative and ground are not bonded together directly but
are connected together by the GFDI device when it is on. All negative conductor connections must
be kept separate from the grounding conductor connections.
o
The FLEXmax controller is not intended to be wired into a positive-ground configuration. However,
certain telecom applications may require this configuration. If a positive-ground system is necessary,
consult www.outbackpower.com/forum/, where this subject has been discussed extensively.
o
If damaged or malfunctioning, the FLEXmax should only be disassembled and repaired by a qualified
service center. Please contact the local renewable energy dealer/installer for assistance. Incorrect
reassembly risks malfunction, electric shock or fire.
DC / Battery-Related Installation Requirements
o
Shut off all DC circuit breakers before connecting any wiring.
o
Torque all the FLEXmax wire lugs and ground terminals to 4 Nm (35 in-lb).
o
Copper wiring must be rated at 75°C or higher.
o
Use up to 35 mm
2
(2 AWG) to reduce losses and ensure highest performance of the FLEXmax.
Smaller cables can reduce performance and possibly damage the unit.
o
Run positive and negative cables side by side.

Keep cables together as much as possible to allow the inductive currents to cancel.

Ensure paired cables pass through the same knockout and conduit fittings.
o
DC battery overcurrent protection must be used as part of the installation. OutBack offers both circuit
breakers and fuses for overcurrent protection.