Sea Frost 372 ROUTE - Manual (Page 5)

5
WIRE SIZE
12-volt installations use AWG #10 wire for distances up to 10 feet for the wire pair, and
#8 AWG wire for distances up to 25 feet for the wire pair. Fuse 15 Amps.
24 Volts: The module will self calibrate to the applied voltage and provide proper fan
voltage. The remote water pump must be a 24volt pump. Fuse 7.5 Amps.
If the polarity is reversed, the electronic module will not work.
In any application, use the next largest wire if in doubt to prevent a voltage drop. A fuse
is preferred over a breaker as it has less potential voltage drop.
CONNECTIONS
For best performance, the electronic module must always be connected directly to the
battery or battery selector switch. Connecting the module through the boat's breaker
panel may cause a voltage drop; small wires and multiple connectors create resistance.
FOR PROTECTION OF THE INSTALLATION, AN EXTERNAL FUSE MUST BE
INSTALLED CLOSE TO THE BATTERY IN THE POWER SUPPLY (+) CABLE.
The fuse is not provided. Connect a red wire from 12 or 24 volts positive to the (+)
terminal of the line in terminal strip. Connect a black wire from 12 or 24 volts negative
to the (-) terminal of the line in terminal strip.
Do not operate the BD directly from a DC charger without a battery.
REFRIGERANT CHARGE
This system operates with refrigerant R-134a and is pre charged.
The proper charge amount is 5-6 oz.
An automatic expansion valve regulates the evaporator pressure. This valve is factory
adjusted to maintain a constant evaporator pressure of 0 to 2 psi. Do not remove the
heat shrink tubing and plastic cap or turn the knob beneath it.
Technicians note: Charge amount will not affect the evaporator pressure.