Boyertown Furnace RSM 500 Installation, Operation And Maintenance Manual page 11

cooling.
Blower Off Delay - Blower off delay after
a call for heat is adjusted through the Delay
Blower Off dip switches on the nrgMax
9103i board. The factory setting is 180
seconds but may be reduced to 150 or 120
seconds
Model HP
RSM 500 3/4
RSM 600 3/4
RSM 750 3/4
MOTOR CONVERSION
The nrgMax 9103i makes it possible to switch seamlessly between motor types.
When changing from an ECM motor to PSC motor remove the ECM motor power cable, 16 pin
control cable and 4 pin control cable. Attach the PSC motor speed leads to the proper output terminals
for heating, cooling and or continuous fan and any unused motor speed wires to the "Unused"
terminals. Attach the motor capcitor to the blower housing and connect the motor capacitor to the
appropriate motor leads.
When changing from a PSC motor to an ECM motor remove the capacitor wires and all PSC motor
speed wires from the nrgMax9103i. Attach the 16 x 4 wire box to the blower housing. Plug in the 16
pin control cable to both the nrgMax9103i and the 16 x 4 wire box. Plug in the 4 pin control cable to
both the motor and the 16 x 4 wire box. Plug the motor power cable into the motor and attach the
green ground wire to the ground screw on the control mounting panel the white wire spade terminal to
an open "Neutral" terminal and the black wire spaed terminal to an open "120 VAC" terminal.
Direct Drive Blower Specifications - PSC Motor
Speeds RPM Volts
3 1075 115
3 1075 115
3 1075 115
PSC Motor Air Flow vs. Static Pressure
Motor 0.2"
Speed Static
Press.
Low 1193
Med 1425
High 1616
Delay Switch
#1 Position
OFF
ON
OFF
ON
Table 7
Full Capacitor Rotation
Load 370 volt
Amp. mfd
10.2 15 CCW
10.2 15 CCW
10.2 15 CCW
Table 8
0.3" 0.4" 0.5"
Static Static Static
Press. Press. Press.
1125
1175 1152
1256
1375 1310
1470
1575 1525
DELAY-Blower Off
Delay Switch Program
#2 Position
OFF A
OFF B
ON C
ON D
Blower Blower
Model Speed
AC
100-10T Hi
100-10T Hi
100-10T Hi
0.6" 0.7"
Static Static
Press. Press.
1090 1053
1190 1118
1395 1309
Blower Off
Delay
90 Seconds
120 Seconds
150 Seconds
180 Seconds
Blower
Speed
Heat
Low
Low
Med
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