Fig. 15 -- Flared Walls are Equal
'On0"=r=ro °\\
Fig. 16- Tightening Connections
Step 4 -- Make Electrical Connections
Unit cabinet must have an uninterrupted, unbroken electri-
cal ground m minimize the possibility of personal injury if
an electrical fault should occur. This ground may consist of
eleclrical wire connected to unit ground lug in control com-
partment, or conduit approved for electrical ground when
installed in accordance with NEC, and local electrical
codes. Failure to follow this warring could result in the
installer being liable for the personal injury of others.
Unit failure as a result of operation on improper line
voltage or excessive phase imbalance constitutes abuse and
may cause damage to electrical components. Such opera-
tion would invalidate any applicable Carder warranty.
Before performing service or maintenance, be sure main
power switch is turned OFF and indoor blower and outdoor
fan have stopped. Failure to do so may result in electrical
shock or injury from rotating fan blades.
POWER WIRING (Fig. 18-20)- Unit is factory wired for
voltage shown on nameplate. Provide adequate, fused discon-
nect switch within sight from unit, readily accessible, but out of
reach of children. Provision for locking the switch open (off) is
advisable to prevent power from being turned on while unit is
being serviced. Disconnect switch, fuses, and field wiring must
comply with the NEC and local code requirements. Use copper
wire only between the disconnect switch and unit. Use mini-
mum 60 C wire for the field power connection.
Open the outdoor unit control box panel (Fig. 20) and con-
nect the indoor and outdoor units. Connect the wires through
the terminals as shown on the unit label diagram and in
Fig. 18 and 19 and Tables 5A and 5B. Unit must be grounded.
I @
0 Three-way valve (mixed-phase) (_ Flare nut
(_ Needle valve
_) Valve cap
Valve needle
_) Allen (hex. head) wrench
(_) Two-way valve (liquid)
Fig. 17 -- Air Purging
_) Liquid line (small diameter)
(_ Mixed-phase line (large diameter)
Indoor unit
Outdoor unit
Vacuum pump
9
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