Electrical Connections; 115-V Wiring - Carrier 58MVP Installation, Start-Up, And Operating Instructions Manual

VOLTS—
UNIT
HERTZ—
SIZE
PHASE
040-14 115—60—1
060-14 115—60—1
080-14 115—60—1
080-20 115—60—1
100-20 115—60—1
120-20 115—60—1
* Permissible limits of voltage range at which unit will operate satisfactorily.
† Unit ampacity = 125 percent of largest operating component's full load amps plus 100 percent of all other potential operating components' (EAC, humidifier, etc.) full
load amps.
‡ Length shown is as measured 1 way along wire path between unit and service panel for maximum 2 percent voltage drop.
** Time-delay type is recommended.

ELECTRICAL CONNECTIONS

See Fig. 28 for field wiring diagram showing typical field 115-v
and 24-v wiring. Check all factory and field electrical connections
for tightness.
Blower access door switch opens 115-v power to furnace
control. No component operation can occur. Do not bypass or
close switch with panel removed. Failure to follow this
warning could result in personal injury or death.
Furnace control must be grounded for proper operation or
control will lock out. Control is grounded through
green/yellow wire connected to gas valve and burner box
screw.
Step 1—115-v Wiring
Before proceeding with electrical connections, make certain that
voltage, frequency, and phase correspond to that specified on
115-V
SINGLE
PHASE
115-V
FIELD-SUPPLIED
DISCONNECT
SWITCH
Table 4—Electrical Data
OPERATING
VOLTAGE RANGE
Maximum* Minimum*
127 104
127 104
127 104
127 104
127 104
127 104
NOTE 5
FIVE
WIRE
THREE-WIRE
HEATING
ONLY
W/W1
NOTE
W2
R
G
AUXILIARY
J-BOX
C
Y/Y2
24-V
FURNACE TERMINAL
CONTROL BLOCK
CENTER
Fig. 28—Heating and Cooling Application Wiring Diagram
MAXIMUM MINIMUM
UNIT WIRE
AMPS SIZE
8.9 14
8.9 14
8.9 14
13.8 12
13.8 12
13.8 12
furnace rating plate. Also, check to be sure that service provided
by power supply is sufficient to handle load imposed by this
equipment. Refer to rating plate or Table 4 for equipment electrical
specifications.
Make all electrical connections in accordance with National
Electrical Code (NEC) ANSI/NFPA 70-2002 and any local codes
or ordinances that might apply. For Canadian installations, all
electrical connections must be made in accordance with Canadian
Electrical Code CSA C22.1 or authorities having jurisdiction.
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Field-supplied wiring shall conform with the limitations of 63°F
(33°C) rise.
Use a separate branch electrical circuit containing a properly sized
fuse or circuit breaker for this furnace. See Table 4 for wire size
and fuse specifications. A disconnecting means must be located
within sight from and readily accessible to furnace.
NOTE: Proper polarity must be maintained for 115-v wiring. If
polarity is incorrect, furnace control status code indicator light will
flash rapidly and furnace will NOT operate.
THERMOSTAT
W C R G Y
TERMINALS
3
NOTE 1
TWO WIRE
NOTES:
1. Connect Y or Y/Y2 terminal as shown for proper cooling operation.
2. Proper polarity must be maintained for 115-v wiring.
3. Use W2 with 2-stage thermostat when zoning.
4. If any of the original wire, as supplied, must be replaced, use
same type or equivalent wire.
5. Some thermostats require a "C" terminal connection as shown.
20
MAXIMUM WIRE MAXIMUM FUSE OR
LENGTH (FT)‡ CKT BKR AMPS**
31
31
31
32
32
32
FIELD 24-V WIRING
FIELD 115-, 208/230-, 460-V WIRING
FACTORY 24-V WIRING
FACTORY 115-, 208/230-, 460-V WIRING
FIELD-SUPPLIED
DISCONNECT
GND
GND
GND
GND
CONDENSING
UNIT
15
15
15
20
20
20
208/230- OR
460-V
THREE PHASE
208/230-V
SINGLE
PHASE
A98325