Nordyne CMF95 Series Installation Instructions

22
HeatAnticipator
Set the heat anticipator according to the instructions
suppliedbythethermostatmanufacturer.Todetermine
theheatanticipatorsetting:
1.Addthecurrentdrawofthesystemcomponents;or
2.MeasurethecurrentowonthethermostatR-Wcircuit
afterthecirculatingblowermotorhasstarted.
Figure 16. 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
Model
Number
CMF95-
Furnace
Input
(Btuh)
Cabinet
Width
(in.)
Nominal
Electrical
Supply
Maximum
Operating
Voltage
Minimum
Operating
Voltage
Maximum
Furnace
Amperes
Minimum
Wire
Gauge
Maximum
Fuse or Circuit
BreakerAmps*
Minimum
Circuit
Ampacity
1
Mamimum
Overcurrent
Protection
2
045 45,000 18 115-60-1 127 103 11.0 14 20 13.1 21.7
072 72,000 18 115-60-1 127 103 10.4 14 20 12.4 20.4
NOTE:Minimumwiregaugeandmaximumfuse/circuitbreakeramperagearebasedonMCA
1
andMOP
2
calculations.Thisfurnaceis
approvedforinstallationwitha15or20ampfuse/circuitbreakerhoweverwiringsizingmustadheretocurrentversionoftheNECand/or
applicablelocalcodesdependingupontheovercurrentprotection.
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4.WireLength&VoltageSpecications
Figure15.LowVoltageField,Four-wire
Heating/CoolingApplications
RCYGW
STATUS
FLAME
GREEN
RED
180
COOL
HEAT
120
90
60
YELLOW
BLOWER
OFF
DELAY
LOW
ML
MH
HIGH
EAC
L1
XFMR
HUM
COM
SPEED
SELECT
3 AMP
FUSE
24V
5
NEUTRALS
ROOM
THERMOSTAT
A/C CONDENSING UNIT
CONDENSING UNIT
CONTROL BOX
EXPANSION PORT
(MOTOR CONNECTION)
FIELD WIRING
LOW VOLTAGE
CONNECTION
R
C
Y
G
W
NOTE: The “Y” terminal
on the control board
must be connected to the
thermostat for proper
cooling mode operation.
Connect
R & W
For Heating
Only
2
ELECTRONIC AIR CLEANER
MOTOR SPEED TAPS
(NOT USED)
HUMIDIFIER TA P
NEUTRAL LEADS
6 3
4
1
7
8
9
5
2
63
4
1
FAN

Nordyne CMF95 Series Specifications

General

Brand	Nordyne
Model	CMF95 Series
Category	Furnace
Language	English