Install Manual

Page 28
mrcool.com
Unit Installation
Outdoor Unit Model Power Supply
Max. Fuse Size
208/230V
1Ph - 60Hz
MDUO18024036
Min. Circuit
Ampacity
MDUO18048060
35 amps
45 amps
24 amps
35 amps
Electrical Connection
Electrical Parameters
Connecting the Power Cord & Thermostat Wire
For solid wires (Refer to Fig. 2.28 A):
1. Use wire cutters to cut off the wire end and then peel away about 1 in (25 mm) of the insulation layer.
2. Use a screwdriver to unscrew the terminal screw on the terminal board.
3. Use nippers to bend the solid wire into a ring that fits the terminal screw.
4. Form a proper ring and then put it on the terminal board. Use a screwdriver to tighten up the terminal
screw.
For braided wires (Refer to Fig. 2.28 B & Fig. 2.29):
1. Use wire cutters to cut off the wire end and then peel away about 3/8 in (10 mm) of the insulation layer.
2. Use a screwdriver to unscrew the terminal screw on the terminal board.
3. Use a round terminal fastener or clamp to fix the round terminal firmly on the peeled wire end.
4. Locate the round terminal conduit. Use a screwdriver to replace it and tighten up the terminal screw, as
shown in Fig. 2.29.
A. Solid Wire
Insulation Layer
1 in (25 mm)
B. Braided Wire
Solderless
Terminal
3/8 in (10 mm)
Fig. 2.28 B
Fig. 2.28 A
WARNING
1. Before work begins, please check to ensure the unit is powered OFF.
2. Improper wire connections could cause electrical components to burn.
3. Connect the wires securely to the wiring box. Incomplete installation may create a fire hazard.
4. Ground wire must be securely connected.
Page 27
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Unit Installation
mrcool.com
Page 28