Pre-electrical checklist, Grounding, Line voltage – Reznor R6GI Unit Installation Manual User Manual
Page 11: Thermostat / low voltage connections, Warning
11
Table 2
Pre-Electrical Checklist
√
Verify the voltage, frequency, and phase of the supply
source match the specifications on the unit rating plate.
√
Verify that the service provided by the utility is sufficient
to handle the additional load imposed by this equipment.
See
or the unit wiring label for proper high and
low voltage wiring.
√
Verify factory wiring is in accordance with the unit
. Verify the connections didn’t loosen
during shipping or installation.
Grounding
WARNING:
The unit cabinet must have an uninterrupted or
unbroken electrical ground to minimize personal
injury if an electrical fault should occur. Do not
use gas piping as an electrical ground
!
This unit must be electrically grounded in accordance
with local codes or, in the absence of local codes, with
the National Electrical Code (ANSI/NFPA 70) or the CSA
C22.1 Electrical Code. Use the grounding lug provided in
the control box (next to the terminal block) for grounding
the unit.
Line Voltage
• The line voltage to the unit should be supplied from a
dedicated branch circuit containing the correct fuse or
circuit breaker for the unit.
•
A properly sized branch circuit and electrical
disconnect must be located within sight of and
readily accessible to the unit. This switch shall be
capable of electrically de-energizing the outdoor unit.
See unit data label for proper incoming field wiring. Any
other wiring methods must be acceptable to authority
having jurisdiction.
• Use only copper wire for the line voltage power supply
. Use proper
code agency listed conduit and a conduit connector for
connecting the supply wires to the unit. Use of outdoor
shielded conduit (metal lined Sealtite
®
) is recommended.
• Provide power supply for the unit in accordance with
the unit wiring diagram and the unit rating plate.
• Remove the control panel cover. Route the power and
ground wires (3 wires, including earth ground) from the
disconnect box to the unit.
• Connect the line voltage leads to
L1 & L2 box lugs of
the high voltage terminal block, and the ground wire to
the grounding lug located above the terminal block.
• Replace the control panel cover before applying power.
• Overcurrent protection must be provided at the branch
circuit distribution panel and sized as shown on the unit
rating label and according to applicable local codes.
See the unit rating plate for maximum circuit ampacity
and maximum overcurrent protection limits.
• A wiring diagram is located on the inside cover of the
control access panel of the outdoor unit. The installer
should become familiar with the wiring diagram (
&
) before making any electrical connections
to the outdoor unit.
For 208Volt Operation Only:
• Units are shipped from the factory wired for 240 volt
transformer operation. For 208V operation, remove the
lead from the transformer terminal marked 240V and
connect it to the terminal marked 208V.
• The inducer motor low speed resistor must be by-passed
for 208 Volt operation. Remove the insulated quick
connect from one side of the resistor block and connect
to piggyback terminal on opposite side to complete
motor circuit.
Thermostat / Low Voltage Connections
• This Gas / Electric unit is designed to operate with
a 24 VAC Class II control circuit. The control circuit
wiring must comply with the current provisions of the
NEC (ANSI/NFPA 70) and with applicable local codes
having jurisdiction. Thermostat connections should be
made in accordance with the instructions supplied with
the thermostat.
• These units use a special variable speed compressor to
achieve a high level of efficiency in a compact frame. A
2 stage cooling / 2 stage heating 24V thermostat should
be used with this unit. See
.
• 24VAC control power wiring must be routed to
interconnect the two-stage thermostat and the the units
low voltage terminal block. Recommended wire gauge
and wire lengths for typical thermostat connections are
listed in
• Eight wires must be run to the control panel.
R, C, W,
W2, G, Y1, Y2, and L (if used) that originate at the
thermostat. Optional L provides a fault indication for
some thermostats.
• The thermostat should be mounted about 5 feet above
the floor on an inside wall. DO NOT install the thermostat
Table 2. Electrical Data
MODEL
NUMBER
(R6GI / PPG2GI)
NOMINAL
COOLING
CAPACITY
(TONS)
MAXIMUM
HEATING
INPUT
NOMINAL
ELECTRICAL
SUPPLY
VOLTAGE RANGE
COMPRESSOR
FAN
MOTOR
FLA
INDOOR
BLOWER
FLA
SINGLE CIRCUIT
MIN
MAX
RLA
LRA
MCA
MOP
E24K080X
2
80,000
208-230/60/1
187
253
11.6
N/A
2.60
3.80
20.9
30.0
E36K100X
3
100,000
208-230/60/1
187
253
16.2
N/A
2.60
3.80
26.7
40.0
E48K120X
4
120,000
208-230/60/1
187
253
17.6
N/A
3.80
7.00
32.8
50.0
E60K120X
5
120,000
208-230/60/1
187
253
24.0
N/A
3.80
7.00
40.8
60.0
NOTE: FLA = Full Load Amps; LRA = Lock Rotor amps; RLA = Rated Load Amps.