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VI. STEP 6 — MAKE ELECTRICAL CONNECTIONS
Be sure field wiring complies with local building codes and
NEC, and unit voltage is within limits shown in Table 5.
Contact local power company for correction of improper line
voltage.
NOTE: Use copper wire only between disconnect switch(es)
and unit.
NOTE: Install branch circuit disconnect of adequate size to
handle unit starting current per NEC. Locate disconnect
within sight of, and readily accessible from, unit, per Section
440-14 of NEC. Some codes allow indoor unit to share discon-
nect with outdoor unit if disconnect can be locked; check
local code before installing in this manner.
1. Route ground and power wires.
2. Route line power leads (see Fig. 16) from indoor
disconnect to the fan coil unit. Place wire through
hole on the control box (Fig. 17). Connect wire to high
voltage terminal board (TB1) and ground screw.
When routing the wire in the unit, use care to keep
the wire away from refrigerant and condensate
piping and any sharp edges. The 208/230-v units are
factory wired for 230-v to 24-v transformer operation.
For 208-v to 24-v operation, interchange blue (208-v)
and red (230-v) wires. Cap any unused wires with
wire nuts.
Table 5 — Electrical Data*
LEGEND *All units are 208/230-1-60. Minimum operating voltage is 187, maxi-
mum is 253. Units will operate satisfactorily within this voltage range.
†Electrical data is the same for both the 24,000 Btuh 024 unit and the
024 unit that has been field-reconfigured for 18,000 Btuh. Refer to
Before Installation section on page 3 for reconfiguration details.
WARNING: To avoid personal injury or damage to
unit, do not make electrical connections until all power
sources are shut down, locked out, and tagged off.
Failure to do so could result in personal injury or unit
damage.
CAUTION: Operation of unit on improper line volt-
age constitutes abuse and could affect warranty. Refer
to Table 5 for permissible operating limits. Do not
install unit in system where voltage may fluctuate
above or below permissible limits.
WARNING: According to NEC and most local
codes, the unit must have an uninterrupted, unbroken
ground to minimize personal injury if an electric fault
should occur. The ground may consist of electrical wire
or metal conduit when installed in accordance with
existing electrical codes. Failure to follow this warning
could result in an electric shock, fire, or death.
SYSTEM
TYPE
UNIT
SIZE
FAN HEATER POWER
MIN WIRE SIZE
(AWG)
Motor 1 FLA Motor 2 FLA kW FLA MCA MOCP FLA
COOLING
ONLY
024† 0.5 — — — 0.53 15 0.50 14
036 1.3 — — — 1.60 15 1.30 14
048 1.1 0.5 — — 2.00 15 1.60 14
060 1.3 1.3 — — 3.30 15 2.60 14
HEAT PUMP
024† 0.5 — 2.00 8.66 9.29 15 9.16 14
036 1.3 — 3.00 13.00 17.70 20 14.30 14
048 1.0 0.5 4.00 17.40 23.80 25 19.00 12
060 1.3 1.3 5.00 21.70 28.70 30 24.30 10
AWG — American Wire Gage
FLA — Full Load Amps
MCA — Minimum Circuit Amps per NEC Section 430-24
MOCP — Maximum Overcurrent Protection
NEC — National Electrical Code