Electrical Connections - Trane 4TTR3 Installer's Manual

Installer's Guide
e. eleCTrICAl COnneCTIOnS
WARNING
!
When installing or servicing this equipment, AlWAYS
exercise basic safety precautions to avoid the possibility
of electric shock.
1. Power wiring and grounding of equipment must comply
with local codes.
2. Power supply must agree with equipment nameplate.
3. Install a separate disconnect switch at the outdoor unit.
4. Ground the outdoor unit per local code requirements.
5. Provide flexible electrical conduit whenever vibration
transmission may create a noise problem within the
structure.
6. The use of color coded low voltage wire is recommended
to simplify connections between the outdoor unit, the
thermostat and the indoor unit.
Table 1 — NEC Class II Control Wiring
24 VOLTS
WIRE SIZE
18 AWG
16 AWG
14 AWG
7. Table 1 defines maximum total length of low voltage
wiring from outdoor unit, to indoor unit, and to thermostat.
8. Mount the indoor thermostat in accordance with
instruction included with the thermostat. Wire per
appropriate hook-up diagram (included in these
instructions).
i. tROUBLEShOOtinG
SYSTEM FAULTS
REFRIGERANT CIRCUIT
Liquid Pressure Too High
Liquid Pressure Too Low
Suction Pressure Too High
Suction Pressure Too Low
Liquid Refrig. Floodback TXV System
I.D. Coil Frosting
Compressor Runs Inadequate or No Cooling
ELECTRICAL
Compressor & O.D. Fan Do Not Start
Compressor Will Not Start But O.D. Fan Runs
O.D. Fan Won't Start
Compressor Hums But Won't Start
Compressor Cycles on IOL
I.D. Blower Won't Start
P - Primary Causes
4
MAX. WIRE LENGTH
150 FT
225 FT.
300 FT.
TROUBLESHOOTING CHART — WHAT TO CHECK
P P
P S P
P P
P P
P S P
P S
S - Secondary Causes
F. cOMPRESSOR StARt-UP
After all electrical wiring is complete, SET THE
THERMOSTAT SYSTEM SWITCH IN THE OFF
POSITION SO COMPRESSOR WILL NOT RUN, and apply
power by closing the system main disconnect switch. This
will activate the compressor sump heat (where used). Do
not change the Thermostat System Switch until power has
been applied for one (1) hour. Following this procedure will
prevent potential compressor overload trip at the initial
start-up.
G. OPerATIOnAl AnD
CheCkOUT PrOCeDUreS
Final phases of this installation are the unit Operational
and Checkout Procedures which are found in this
instruction (see table below and pages 6 and 8). To obtain
proper performance, all units must be operated and charge
adjustments made in accordance with procedures found on
page 6 and in the Service Facts.
IMPORTANT:
Perform a final unit inspection to be sure that factory tubing
has not shifted during shipment. Adjust tubing if necessary so
tubes do not rub against each other when the unit runs. Also
be sure that wiring connections are tight and wire routing is
secure.
h. SeACOAST ShIelD
If installed within one mile of salt water, including
seacoasts and inland waterways, models without factory
supplied Seacoast Salt Shields require the addition of
BAYSEAC001 (Seacoast Kit) at installation time. Please
refer to Application Guide SS-APB006-EN: Trane - Seacoast
Applications and Seacoast Corrosion Protection Bulletin
UN-SVB11A-EN.
IMPORTANT:
See Limited Warranty information in Use and Care Manual.
P
S P
S P
S
P
S P
S P P P
P P S
P P S S
P P S P S P S
S P P
P S P S S S
S S S S
P S P
S P S
S S
P S
P S S P S
S S S S
18-AC71D1-5