Use and Care Manual

Page 42mrcool.com
Electrical Connections
ALL WIRING MUST BE INSTALLED STRICTLY IN
ACCORDANCE WITH THE WIRING DIAGRAM
LOCATED ON THE INSIDE OF THE OUTDOOR
CONDENSER WIRE COVER AS SHOWN IN FIG. 8.7.
The air conditioner’s circuit board (PCB) is
designed with a fuse to provide overcurrent
protection. The specifications of the fuse are
printed on the circuit board.
EXAMPLE (Indoor Unit): T3.15AL/250VAC,
T5AL/250VAC, T3.15A/250VAC, T5A/250VAC, etc.
EXAMPLE (Outdoor Unit):
T20A/250VAC (<24,000 Btu/h units),
T30A/250VAC (>24,000 Btu/h units), etc.
NOTE: For units with R32 or R290 refrigerant,
only the blast-proof ceramic fuse can be used.
NOTE ABOUT FUSE SPECIFICATIONS
3. Now, pull the end of the MC cable through the
hole of the electrical cover you removed earlier.
Please refer to the images below.
1. Remove the screws from the electrical wiring
cover from the outdoor condenser, as shown in
the image below and
Fig. 8.7, and remove it.
2. Remove the retaining nut from the end MC cable
that you fed through the wall hole earlier in the
installation
, as shown in the image below.
Cover
Outdoor Unit
Wiring Diagram
is located on
the inside of the
wire cover on
the outdoor unit.
Fig. 8.7
Connect the MC Cable(s) to Outdoor Condenser
SELECT THE CORRECT CABLE
•
See table below for gauge requirements
NOTE: The table below is a standard chart, the
AWG ratings and wiring needs will change based
on wire length and temperature.
Appliance
Amps (A)
AWG
25
40
45
36K
27K
18K
Model Series
Minimum Wire Gauge for Power Cables
MCA MOP Min. Pref.
12
10
8
10
8
6
18
26
27
6048K 8 640