Bi-Directional Isolator Relay Delay (BIRD)
Current
gas
coaches with 30 Amp electrical service, as well
as
some older diesel coaches, use an Intellitec Bi-Directional
Isolator Relay Delay
(BIRD) with a
separate
solenoid.
The
BIRD
monitors both the chassis and
house battery and is the
only place in the coach where they
both merge.
The BIRD
only
functions when the engine or
generator is running or when the
coach is connected to shore
power.
To learn more, visit the Bi-Directional Isolator Relay Delay
home page.
Battery Disconnect
When an older coach is stored while
plugged into shore power, do not use
the battery disconnect. If the battery disconnect is used, the chassis
batteries will not receive a charge from the converter or inverter/converter
combination. This is due to the coach battery wire being disconnected,
meaning the BIM or the BIRD will not engage.
The Bay Star Sport has a manual rotary key switch to disconnect power,
which is located in the overhead above the entry door.
Fifth
wheel
products
also used a manual rotary disconnect switch, which
were
normally located
in the bathroom.
All other coaches
have a single lighted
switch located in
the front overhead that turns off the house voltage.
When the battery disconnect is 'off', meaning you have disconnected components from the batteries, there are
still some loads on the batteries connected to the hot side of the Battery Disconnect Relay. Some of these
loads may be Radio Memory, Entry Steps, and LP Detector. These will draw from the batteries, even when the
disconnect is 'off'. Pull the fuse for each of the 'HOT' circuits to stop the batteries from being drained.
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Fuse Blocks and Mini-Breakers
When a 12 Volt wire is ran, most of the circuits are protected with fuses or mini-breakers. These can be located at
various areas in the coach but are typically located near the main breaker panel. However, they may also be found in
areas such as:
Interior
• Rear bedroom
• Rear bathroom
• Closet
Exterior
• Power cord compartment
• Left, front electrical compartment (located beneath the driver window)
• Front firewall (gas coaches)
Newmar
uses an Intellitec disconnect relay connected
to the battery bank
to
disconnect certain loads when placing the coach in storage.
Keep in
mind
that not all loads are disconnected. This is very important to
remember
when a coach is put into storage and is not plugged into shore
power.
Before placing the battery disconnect in the "off" position, make
sure the
inverter (if equipped) is turned off.
