Nordyne VG7TC-FS User Manual

25
IMPORTANT NOTES:
• Anelectricaldisconnectmustbeinstalledreadily
accessible from and located within sight of the
furnace. See Figure 21 (page 25) or the wiring
diagramlabelinsideofthecontroldoor.Anyother
wiring methods must be acceptable to authority
havingjurisdiction.
• Properlinevoltagepolaritymustbemaintainedin
orderforthecontrolsystemtooperatecorrectly.
Verifytheincomingneutrallineisconnectedtothe
whitewireandtheincomingHOTlineisconnected
totheblackwire.Thefurnacewillnotoperateunless
thepolarityandgroundareproperlyconnectedas
shown in Figure 21.
• Ifreplacinganyoftheoriginalwiressuppliedwith
thefurnace,thereplacementwiremustbecopper
wiring and have a temperature rating of at least
105°F(40°C).Forelectricalspecications,referto
thefurnacenameplateorTable 5.
Grounding
WARNING:
Tominimizepersonalinjury,thefurnacecabinet
must have an uninterrupted or unbroken
electrical ground. The controls used in this
furnace require an earth ground to operate
properly.Acceptablemethodsincludeelectrical
wireorconduitapprovedforgroundservice.
Donotusegaspipingasanelectricalground!
Thermostat/LowVoltageConnections
• Thefurnaceisdesignedtobecontrolledbya24VAC
thermostat. The thermostat’s wiring must comply with
the current provisions of the NEC (ANSI/NFPA 70) and
with applicable local codes having jurisdiction.
• NORDYNEnolongersupportstwinningoftwostage
furnaces. Please contact your furnace distributor for
details.
• The thermostat must be installed according to the
instructions supplied by the thermostat manufacturer.
Figure21.Line Voltage Field Wiring
Field Supplied
Disconnect w/in
Sight of Furnace
Field Supplied
Panel Connector
Field Supplied
Fused Service
Panel
Black (Hot)
White (Neutral)
Green or Bare
(Ground)
Black
White
Black
White
Black
White
Field Line Voltage Wiring
Factory Line Voltage Wiring
Ground
Ground
Junction Box (may be int. or ext. to the furnace). These
connections can be made in the field supplied disconnect
at the furnace. NOTE: Connections made within the furnace
burner compartment do not require a junction box.
Ground
Furnace
Input
(Btuh)
Cabinet
Width
(in.)
Nominal
Electrical
Supply
Maximum
Operating
Voltage
Minimum
Operating
Voltage
Maximum
Furnace
Amperes
Maximum
Fuse or Circuit
BreakerAmps*
60,000 17 ½ 115-60-1 127 103 7.0 15
80,000 21 115-60-1 127 103 9.4 15
100,000 21 115-60-1 127 103 9.4 15
120,000 24 ½ 115-60-1 127 103 12.5 15
ThermostatWireGauge
RecommendedThermostatWireLength
2 - wire - Heating 4 or 5 wire - Cooling
24 55 ft. 25 ft.
22 90 ft. 45 ft.
20 140 ft. 70 ft.
18 225 ft. 110 ft.
* Time-delay fuses or circuit breakers are required.
Table5.WireLength&VoltageSpecications

Nordyne VG7TC-FS Specifications

General

Brand	Nordyne
Model	VG7TC-FS
Category	Furnace
Language	English