Boyertown Furnace RSM 500 Installation, Operation And Maintenance Manual page 10

16 x 4 Wire Box Connections
The remote mounted 16 x 4 wire box translates the thermostat and control signals from the NrgMax
board into the appropriate air flow signal for the motor. In standby and all operating modes the "RX"
and "TX" lights will flash showing comunication with the motor. During a call for blower operation
the "PW" light will blink showing the air flow requested followed by an off period. Counting the
blinks between the off period shows the requested air flow whereby each blink equates to 100 CFM.
Figure 2
Pin Description
1 C1
2 W/W1
3 C2
4 DELAY
PSC Motor Air Flow
Heating – set the blower motor speed to give the
specified air temperature rise.
burner starts is fixed by the nrgMax control at 45
seconds. Fan off time can be adjusted by using the delay
DIP switches to regulate the outlet air temperature at the
end of a heating cycle.
electronic air cleaner terminal "ACC"and the humidifier
terminal "H" are energized.
Cooling – set the blower speed to give the required
cooling tonnage. Blower starts immediately upon call for
cooling. During a call for cooling the electronic air
cleaner terminal "ACC" is energized.
immediately after cooling demand is satisfied.
Continuous fan – By attaching a blower motor speed lead
to the continous terminal "CONT" the blower will run
continuously at that speed until there is a call for heat or
10
16 Pin Signal Connector
Pin Description
5 COOL
6 Y1
7 ADJUST
8 OUT
Fan on time after the
During a call for heat the
Blower stops
16 Pin Connector
Pin Description
9 O
10 BK
11 HEAT
12 R
4 pin motor
connector
Pin Description
13 W2
14 Y/Y2
15 G
16 OUT