King Electric Model KF - Manual (Page 4)

4
C O N V E R S I O N O F T O R Q U E T O H O R S E P O W E R
The power requirements for the Direct Drive curves in
this section are stated in torque units of ounce-inches
and ounce to feet.
The formula listed below may be used to convert
torque to horsepower.
TORQUE IN OZ-IN TORQE IN OZ-FT
HP=Torque (oz-in) x RPM HP=Torque (oz-ft) x RPM
1,008,400 84,033
MOTOR
HP
MOTOR LOAD
VOLTAGE AMPS
MOTOR SPEED
LOW MED HIGH
CFM FPM FPM FPM CFM CFM
1/5
1/3
1/2
MOTOR WIRE COLOR RED BLUE BLACK
Air Volume = Cubic Feet Per Minute (CFM)
Air Velocity = Feet Per Minute (FPM)
230
380 / 460
230
380 / 460
380 / 460
3.4
1.7
3.2
1.7
1.9
775
1100
1250
570
810
920
1000 735 630 860
1130 1250
1540
920
1130
1540
1750 1285
AIR DELIVERY CHART
HORSEPOWER FOR DIRECT DRIVE BLOWER WHEELS
(Upper value in Oz-In)
(Lower value in Oz-Ft)
TORQUE: RPM
1200 0.04
1100
1000
900
800
60
5
120
10
180
15
240
20
300
25
360
30
420
35
480
40
0.03
0.03
0.03
0.02
0.07
0.07
0.06
0.05
0.05
0.14
0.13
0.12
0.11
0.10
0.21
0.20
0.18
0.16
0.14
0.29
0.26
0.24
0.21
0.19
0.36
0.33
0.30
0.27
0.24
0.43
0.39
0.36
0.32
0.29
0.50 0.57
0.46
0.42
0.38
0.33
0.52
0.48
0.43
0.38
(Upper value in Oz-In)
(Lower value in Oz-Ft)
TORQUE: RPM
1200 0.71
1100
1000
900
800
720
60
840
70
960
80
1080
90
1200
100
1320
110
1440
120
1560
130
0.66
0.59
0.54
0.48
0.86
0.79
0.71
0.64
0.57
1.00
0.92
0.83
0.75
0.67
1.14
1.05
0.95
0.86
0.76
1.29
1.31
1.19
1.07
0.95
1.43
1.31
1.19
1.07
0.95
1.57
1.44
1.31
1.18
1.05
1.71 1.86
1.57
1.43
1.29
1.14
1.70
1.55
1.39
1.24
600
50
FURNACE TERMINAL BLOCK
Heat Anticipatory Setting:
Model KF or KFS 5 thru 18 = .4 amps
Model KFS 20 thr 35 = .8 amps
R
W
G
RED
BROWN
W
R
G
YELLOW
HEAT
FAN RELAY
24 VAC
Fan only relay
Element Relays
SINGLE
LOW VOLTAGE
CONTROL CIRCUIT WIRING DIAGRAMS:
C
R
W
G
R
W
G
Y
Transformer
Furnace Low Voltage
Terminal Block
24VAC
Heat Relays
Fan Only Relays
Cooling Coil Relay
Low Voltage Thermostat
Thermostat Control Wiring diagram
for use with electric furnaces and
showing cooling coil relay hook-up
To Limit Controls
and
Heater Elements
240VAC
Electronic Air Cleaner
Airflow Sensing Switch
Electronic Air Cleaner Wiring diagram
for use with electric furnaces and
utilizing an airflow interlock switch
60 Amp
Circuit Breaker
60 Amp
Circuit Breaker
60 Amp
Circuit Breaker
L6
L5
L4
L3
L2
L1
{
{
{
240VAC
240VAC
240VAC
2007 KF-KFS.indd : 3/08
230 3.8