Name: Heart Interface 25
Brand: Heart Interface
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Part No. 90-0123-00

Libertycombi.p65 11/05/99

9. Do not back-feed the AC output of the9. Do not back-feed the AC output of the

9. Do not back-feed the AC output of the

inverter with incoming inverter with incoming

inverter with incoming

AC powerAC power

AC power

. .

. A

back-feed occurs when AC power from shore

power or generator is connected to the output

of the inverter. This will damage the inverter

and void the warranty. Remember that

incoming

AC must be fed only to the AC input

and never the AC output. Always check for AC

voltage before connecting wires to the AC

output. Do NOT turn the inverter ON until all

AC connections have been made. Back-

feeding the inverter voids the warranty.

10. Do not connect the AC input to the AC10. Do not connect the AC input to the AC

10. Do not connect the AC input to the AC

output.output.

output. This would be equivalent to plugging

the battery charger into the inverter. This could

occur if the unit’s AC output is connected to

the entire leg of a circuit breaker panel, then a

circuit breaker on that leg is used to feed the

battery charger input. This will cause the unit

to oscillate ON and OFF when the unit is in

inverter mode.

1. 1.

Always use proper wire andAlways use proper wire and

Always use proper wire and

connectors.connectors.

connectors. The proper battery cable size is

critical. Considerable amperage flows in the

DC circuit. For the Freedom 10 use 2

A WG(for the Freedom 15, 20, 25 2/0 A WG, for

the Freedom 30 3/0 A WG) UL Listed Welding

Cable terminated on each with UL Listed or UL

Recognized ring terminal connectors.For the

terminal, use Thomas & Betts (T&B) part num-

ber BAL 2038. Be sure the connectors are at-

tached to the cable using a method approved

by the connector manufacturer. For the con-

INSTINST

INST

ALLAALLA

ALLA

TIONTION

TION

nections to meet all requirements, T&B recom-

mends that each terminal be crimped in two

places with a pressure of 15 tons using a hex-

agonal die. The T&B die has a code

number of 54. After the crimp is made, the

barrel of the terminal and the first inch of the

cable needs to be covered in UL Listed or UL

Recognized heat shrink tubing. Heart Interface

recommends a 2-inch length of 3M HDT 0800

tubing. Other heat shrink may be used if it is

UL Listed or UL Recognized as long as the

manufacturer ’s directions are followed.

12.12.

12. If installing in a system which includes an

existing battery charger or AC to DC converter,

make sure these do not operate from themake sure these do not operate from the

make sure these do not operate from the

inverter output inverter output

inverter output

AC powerAC power

AC power

. .

. This sets up a

power loop which, due to inefficiencies, will

quickly drain the batteries.

13.13.

13. An Auxiliary Switch port is located on the

front panel of the unit, covered by a flap. When

installing the unit for operation without a

Remote Control Panel or Link Instrument, a

jumper must be installed in the Aux Switch

port. The jumper is shipped in a plastic bag

with other installation parts. DO NOT install

the jumper until all cable connections have

been made.

When using a Remote Control Panel orWhen using a Remote Control Panel or

When using a Remote Control Panel or

Link Instrument, the jumper is not used.Link Instrument, the jumper is not used.

Link Instrument, the jumper is not used.

Do not connect incoming AC from any

source to the AC output of the inverter.

This is known as back-feeding and will

damage the unit and void the warranty.

ARNINGARNING

ARNING

Auxiliary Switch PortAuxiliary Switch Port

Auxiliary Switch Port

Freedom 20Freedom 20

Freedom 20

JumperJumper

Jumper

Actual size 3/8”L x 3/16”W

Brand	Heart Interface
Model	25
Category	Battery Charger
Language	English

Heart Interface 25 User Manual

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Heart Interface 25 Specifications

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