5
Installation
inches for air entry and discharge.) A lower entry, and
upper discharge is preferred. See Ventilation Requirements
diagram in this manual.
Install appliance away from heat sources in a dry and well-
ventilated area. Avoid direct contact with water.
The
appliances are not waterproof.
Electrical Connection
Before connecting the appliance to the power supply, check
that the line voltage corresponds to the indications on the
appliance rating plate and those of the compressor plate.
This appliance complies with EC directive 89/336 governing
radio suppression.
DC Wiring
For Direct Current (DC) refrigerators, connect the appliance
to the DC distribution center. A circuit breaker of 15 Amps
(maximum) must be used if the system is 12VDC, and 10
Amps (maximum) if the system is 24VDC.
Make sure that
proper polarity is maintained at all times.
Check that all
grounding systems are in good working order.
The appli-
ance must be wired and grounded in accordance with
the Electrical Wiring Guidelines in this manual.
DANFOSS Compressor Data
Voltage Range
12V systems: From 10.4V to 17V
24V systems: From 22.8V to 31.5V
The electronic unit will calibrate automatically to the applied
voltage. This means that if the battery voltage is less than
17V, the electronic unit assumes that it is working in a 12V
system. If the voltage is higher than 17V, the electronic unit
assumes that it is working in a 24V system. However, the
compressor does not run at power supply voltages between
about 17V and 22.8V, the desired battery protection cut-out
voltage for 24V systems.
Protection Systems
The Danfoss compressor protection system facilitates
protection against compressor overload and start failure,
fan overload and electronic unit overheating as well as
destructive battery discharge. When an overload protection
is activated, the compressor enters a cycle in which it
makes start attempts at approximately 60 second intervals
until a successful start is achieved.
Overload Protections
The compressor overload and start protection cuts off
power to the compressor if the compressor speed drops
below approximately 1,900 rpm, or if this motor speed is
not reached during the start sequence. Possible reasons for
overload protection activating could be too high refrigera-
tion system pressures during operation or lack of pressure
equalizing at start.
The fan overload protection stops the compressor if the fan
current exceeds 0.5 A
(avg)
or 1 A
(peak)
.
An overheating of the electronic unit heat sink will cause
the compressor to stop. Restart will occur automatically
when a normal temperature has been reached. If a fan is
installed, it will continue to run when the compressor stops
due to overload or electronic unit overheating.
Voltage Protection
If a voltage outside any concerned range is applied to the
electronic unit, the compressor does not start, or it stops if
the voltage limit is exceeded during operation. The com-
pressor will restart automatically approximately 1 minute
after the supply voltage has reached the reset voltage
within the range in question.
Battery Protection
The Danfoss electronic unit provides protection as follows:
Standard Battery Protection Settings
12V cut-out
12V cut-in
24V cut-out
24V cut-in
10.4
11.7
22.8
24.2
Final Installation Notes
• For all appliances, AVOID the use of any electrical
adapters or extension cords.
• After installation, allow the appliance to sit for at least
one hour before starting.
•
The manufacturer assumes no responsibility for any
injuries or damage caused by noncompliance with
any of the installation regulations.
