Grounding; Thermostat Connections; Positive Temp. Coeffi Cient Resistor (Ptcr) - Nordyne JS5BD SERIES User's Manual & Installation Instructions

• The outdoor unit requires both power and control circuit
electrical connections. Refer to the wiring diagram /
schematic for identifi cation and location of outdoor
unit fi eld wiring interfaces (Figure 4, page 10). Make all
electrical connections in accordance with all applicable
codes and ordinances.
• 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 minimum circuit ampacity
and maximum overcurrent protection limits.
• Provide power supply for the unit in accordance with the
unit wiring diagram, and the unit rating plate. Connect
the line-voltage leads to the terminals on the contactor
inside the control compartment.
• Use only copper wire for the line voltage power supply
to this unit as listed in Table 1. Use proper code agency
listed conduit and a conduit connector for connecting
the supply wires to the unit. Use of rain tight conduit
is recommended.
• 208/230 Volt units are shipped from the factory wired
for 230 volt operation. For 208V operation, remove the
lead from the transformer terminal marked 240V and
connect it to the terminal marked 208V.
• Optional equipment requiring connection to the power
or control circuits must be wired in strict accordance
of the NEC (ANSI/NFPA 70), applicable local codes,
and the instructions provided with the equipment.

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 for grounding the unit.

Thermostat Connections

• Thermostat connections should be made in accordance
with the instructions supplied with the thermostat and
the indoor equipment.
• The outdoor unit is designed to operate from 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.
• The low voltage wires must be properly connected to
the units low voltage terminal block. Recommended
wire gauge and wire lengths for typical thermostat
connections are listed in Table 2.
• The thermostat should be mounted about 5 feet
above the fl oor on an inside wall. DO NOT install the
thermostat on an outside wall or any other location
where its operation may be adversely affected by radiant
heat from fi replaces, sunlight, or lighting fi xtures, and
convective heat from warm air registers or electrical
appliances. Refer to the thermostat manufacturer's
instruction sheet for detailed mounting and installation
information.
Positive Temperature Coeffi cient Resistor (PTCR)
(Select models only)
The PTCR is factory installed and located on the control
panel of the outdoor unit.This soft start device is for use
with reciprocating compressors. If a hard start kit is needed
on this unit, the soft start (PTCR) must be removed fi rst.
Thermostat
Wire Gauge
24
22
20
18
Table 2. Thermostat Wire Gauge
Electrical
Data
!
Component
Data
Refrigerant Suction Line:
Length/O.D.
Liquid Line: All Lengths - 3/8"O.D.
R-22 Refrigerant Charge (in Ounces):
(Outdoor unit, Indoor Unit - 15' Line Set)
Approximate Weight (lbs.)
Table 3. Electrical Specifi cations & Physical Data
Recommended T-Stat Wire
Unit to T-Stat (Length in FT)
2-Wire 5-Wire
(Heating) (Heating/Cooling)
55
90
140
225
JS5BD-24K
Volts-Cycles-Phase
Total Amps
Delay Fuse Max.
Min. Circuit Ampacity
Area
Coil Rows-FPI
Tube Dia.
Type
Fan Motor Amps
Watts-HP
Dia.
Fan Blade # Blades
SCFM
RLA
Compressor
Data
LRA
15 - 24 ft.
25 - 39 ft.
40 - 75 ft.
Net
Ship
25
45
70
110
208/230-60-1
11.5
20
14.1
8.3
1-22
MC
PSC
0.7
0.1
18"
3
2800
10.8
40.3
3/4"
3/4"
3/4"
53
113
118
7