Nova Kool Fridge/Freezer Installation And Repair Manual - page 4
4
N O VA KO O L F R I D G E / F R E E Z E R I N S TA L L AT I O N & R E PA I R M A N UA L
N O VA KO O L F R I D G E / F R E E Z E R I N S TA L L AT I O N & R E PA I R M A N UA L
5
Electrical Hook-Up
To determine the size of the wire to be used, measure the
maximum length of wire to connect one of the leads from the
electronic unit (on the back of the refrigerator) to the battery.
Using the chart below, size your wire accordingly. The table is
based on a 3% voltage drop.
** Length is the distance between the electronic unit and the battery
The circuit breaker must be a 20 amp capacity on the DC
side and a 5 amp capacity on the (optional) AC side. Failure to
size the wire or breaker correctly (too small) may cause a pre-
mature shut down of the refrigerator by the Battery Protection
Device.
On our double door models, 120 square inches is required
(60 at the top and 60 at the bottom).
The cold air intake at the bottom of the fridge can be from
the left or the right side, and if possible should be at a level
below the fridge.
The warm air opening at the top of the refrigerator should
be above the fridge if possible.
All openings can be of any configuration (long and narrow ,
square or round) as long as the 60 or 120 square inches is cut
out.
If you are using grills, take into account the restriction they
will give, and adjust the opening accordingly.
Ventilation
(continued)
wire size
max. lead length in feet**
AWG
14
12
10
8
12VDC units
8
12
25
40
24VDC units
16
25
50
80
Electrical Hook-Up
(continued)
FUSE
Nova Kool recommends the use of a
15 Amp Fuse (12 VAC) and a 7.5 Amp Fuse
(24 VDC) as near as possible to the DC
Source.
On the optional AC power supply a 4
amp (110 volt) or a 2 amp (220 volt) glass
fuse, can be found under the black fuse
holder cap on the power supply.
We recommend that the refrigerator have its own circuit,
without any other appliances connected to the same wires.
Using the COMMON BUSS for the refrigerator wir-
ing can sometimes cause radio frequency noise and interfer-
ence.
Power supply for AC/DC Refrigerators
Standard battery protection settings
12V cut-out
V
12V cut-in
V
24V cut-out
V
24V cut-in
V
10.4
11.7
22.8
24.2
110VAC
Fuse
1 - Electronic Unit
2 - Battery
3 - Main switch (optional)
5 - Fan (optional)
6 - Thermostat
7 - Resistor for pre-setting speed
8 - Resistor for pre-setting battery
protection voltage (optional)
9 - Fuse (Field Installed)
10 - Terminal Block
11 - Light (optional)
12 - Door Switch (optional)
Wiring diagram for DC only Refrigerators.
Field Wiring
Factory Wiring
10
(Control module is connected
to compressor)
11
12