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12

2 INSTALLATION

2.9 Fusing

REDARC recommend using MIDI style bolt down fuses as they 
ensure a low resistance connection. The REDARC FK40 and FK60 
fuse kits are recommended.
Blade type fuses are not recommended as they can result in a high 
resistance connection which causes excess heat and may damage 
the fuse holder and/or the wiring. Self-resetting circuit breakers are 
not recommended as they may trip prematurely due to the heat 
generated by the current fl owing through the wires.

3 TROUBLESHOOTING

Are all 

battery negative wires,

solar negative wire and BLACK

BCDC wire connected to a 

common ground point?

(chassis)

Is the input

voltage above the 

required turn ON threshold?

(Refer to page 4)

Is the auxiliary

battery voltage

above 4v?

Check the connection

to the BCDC, and the

orientation of the LED as per

the install diagrams.  If the problem

is still evident contact a qualified

Auto Electrician, or REDARC

Electronics.

The BCDC is operating correctly.  If a low

auxiliary battery voltage occurs - check

BROWN wire is making a good

connection to the auxiliary battery.  If the

problem is still evident, get a qualified

Auto Electrician to inspect the system.

The BCDC is not operating
correctly.  Have a qualified

Auto Electrician check the wiring,

fuses, batteries and charging

system or contact REDARC

Electronics for more information.

Check the input.

If the problem is still evident

contact a qualified Auto

Electrician or REDARC

Electronics.

Remove all loads from the

auxiliary battery and charge it

overnight, using a multi-stage charger

and then recheck the battery.

If the battery voltage is

still low, replace battery.

Yes

No

Yes

Yes

Yes

Yes

Yes

Yes

No

No

No

No

No

No

Start and run engine

for 30 seconds - leave

engine running whilst

troubleshooting.

Shutdown the

vehicle and rectify

the problem.

Is the

‘Charge Status’ light

flashing?

If an External LED

is fitted, is it working as

described on page 5

of this manual?

Check

the BLUE wire.

VEHICLE - BLUE to IGNITION

SOLAR - BLUE to GROUND or

NO CONNECT, is the BLUE

wire setup like

this?

Check the RED

wire.  Is it installed with

appropriate gauge wire and

connected to the source

you require?

A single fuse and holder
setup from the Fuse Kits
available from REDARC.
Part number FK40 (40A)
or FK60 (60A).

Summary of Contents for BCDC2420

Page 1: ...In vehicle 3 Stage 24V Battery Charger BCDC2420 BCDC2420 LV ...

Page 2: ...ppliance by a person responsible for their safety Children should be supervised to ensure that they do not play with the Battery Charger 2 Do NOT alter or disassemble the Battery Charger under any circumstances All faulty units must be returned to REDARC for repair Incorrect handling or reassembly may result in a risk of electric shock or fire and may void the unit warranty 3 Only use the Battery ...

Page 3: ...roubleshooting 12 4 Frequently Asked Questions 13 5 Two Year Warranty 14 Specifications Part Number BCDC2420 LV Continuous Current Rating 20A Input Fuse Rating 12V 24V 60A 40A Not supplied Output Fuse Rating 30A Not supplied Output Power 600W DC Input Voltage Range 9 32V 9V 16V for LV model Solar Panel Open Circuit Voltage 17 5V 28 0V Output Battery Type Standard Lead Acid Calcium content Gel AGM ...

Page 4: ...y to avoid over discharging the main battery The BCDC2420 LV operates almost identically to the BCDC2420 but is designed to operate from an ignition trigger to allow operation in vehicles with Variable Voltage or Smart Alternators 1 1 Display Panel The front panel features 6 LEDs to display the charge profile and charge status LED State Charge Profile LED Charge Status LED Off Unit has no Power Ou...

Page 5: ...age maintains 13 3V on the output battery keeping the battery topped up This counteracts the battery s self discharging or loads applied to the battery When the battery loses charge the charger will move back into the Boost stage 1 3 Turn On Off Thresholds 12V BCDC2420 12V BCDC2420 LV Solar All Models 24V standard 3 BCDC2420 Input Open Circuit Low voltage conditions 1 Turn ON above 13 2V 12 0V 17 ...

Page 6: ... Solar panel 7 flash 7 flash followed by 3 5 second off Reverse polarity NOTE The unit will operate optimally below 55 C with good airflow At higher temperatures the unit will de rate output current NOTE Appropriate connections must be made to the wires with a continuous current rating of at least 20A for the BCDC2420 LV Failure to do so may cause damage to the unit and vehicle 2 INSTALLATION Moun...

Page 7: ...For standard non LV models the BLUE wire may be permanently connected to the Input Source Positive supply and the charger will only charge when the alternator is running This is not suitable for the BCDC2420 LV 2 1 2 Solar Input TheBCDC2420isalsocapableofchargingtheauxiliary battery from a Solar source The unit will accept an input directly from an unregulated 12V nominal solar panels and act as a...

Page 8: ...RED wire Input source positive This will set the Maximum voltage to 30 8V Check the manufacturer s data for your battery and ensure that the Maximum voltage of the profile you select does not exceed the manufacturer s recommended maximum charging voltage If the Maximum voltage for your battery type is too high please select another charging profile 2 3 1 ORANGE wire Setting Recommendations Auxilia...

Page 9: ...ssis of the vehicle on the chassis of the trailer camper caravan or directly wired to both batteries depending on your installation requirements 2 6 GREEN wire Optional External LED Indication The GREEN wire is provided to optionally connect an external indicator LED which can be mounted away from the unit for example on the vehicle s dashboard Connect the positive lead of the LED to the green wir...

Page 10: ... fire We recommend that this activity be undertaken by an appropriately trained person REDARC recommends using a soldered butt splice crimp connection that is covered with heatshrink See Figure 2 8 REDARC does not recommend using standard red blue yellow blade connections as they are not rated for either the current required or gauge of wire supplied on the unit Crimping provides good mechanical c...

Page 11: ...ack Brown Green 12V INPUT OR 24V BCDC2420 Loads 30A Fuse Load Fuse Auxiliary Battery 12V All ground points must be connected to chassis earth Start Battery Fuse INPUT to vehicle ignition Fuse Ratings as per table on Page 2 Red Blue Orange Black Brown Green Charging Profile Select Refer to section 2 3 Optional LED BCDC2420 LV Figure 2 8b BCDC2420 LV Standard setup for a 12V Start Battery Figure 2 8...

Page 12: ...ED A Relay suitable for 12V Vehicle installations is available as part of the REDARC RK1260 Relay Kit The kit also includes butt splice connectors a wiring loom heat shrink and instructions Automatic Source Select BOTH MODELS Loads 30A Fuse Load Fuse Auxiliary Battery All ground points must be connected to chassis earth SOLAR 12V Solar Panel Array INPUT Fuse Ratings as per table on Page 2 Red Blue...

Page 13: ...nection to the auxiliary battery If the problem is still evident get a qualified Auto Electrician to inspect the system The BCDC is not operating correctly Have a qualified Auto Electrician check the wiring fuses batteries and charging system or contact REDARC Electronics for more information Check the input If the problem is still evident contact a qualified Auto Electrician or REDARC Electronics...

Page 14: ...to be mounted into a Caravan or Camper near or in the battery compartment is generally the best position It is also a good idea to mount the BCDC to a metal surface if possible to ensure optimal heat dissipation though this is not crucial Q What does the charger do if the temperature around it rises above its operating temperature A As the temperature of the BCDC rises above a certain level the cu...

Page 15: ...uct including without limitation choice of location 6 4 failure to ensure proper maintenance of the Product strictly in accordance with Redarc s instructions or failure to ensure proper maintenance of any associated equipment or machinery 6 5 repairs to the Product that are not strictly in accordance with Redarc s instructions 6 6 installation repairs or maintenance of the Product by or under the ...

Page 16: ...nics 23 Brodie Road North Lonsdale SA 08 8322 4848 power redarc com au www redarc com au Copyright 2018 REDARC Electronics Pty Ltd All rights reserved www redarc com au WARBCDC2420 REV4 For specific USA Warranty terms please visit www redarcelectronics com ...

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