EngA ENGINEERED AIR base - Humdifier Version - Sh; Hardware Information

base A
7
IOM74 November 2020 R105
HUMDIFIER VERSION – SH
The Engineered Air base controller is the primary operational component for custom manufactured Engineered
Air HVAC equipment. Engineered Air DJ style burners on SH(X) sizes 120-650, use the CD-XM expansion module
for burner motor speed control.
Green Light: 24Vac to H and N.
Yellow Light: Communication.
Red Light: Alarm indication.
7 segment displays: Left: Mode status, right 2 LED’s: Alarm reference number.
Notice:

There is approximately a 1 minute delay before operation can commence on initial power up.
The base has to load parameters and configurations prior to operation.
HARDWARE INFORMATION
Control Voltage
24Vac 60Hz
Analog Input
(7.5k
Ω impedance)
0
-
10Vdc and 4
-
20mA
2,3
Digital Output Rating
120V 10A
Temperature Rating
-
40
–
150°F (65°C)
Digital Input
24
-
120
Vac
1
Temperature Sensor
10k Type 2 NTC
Analog Output
0
-
10Vdc
Power Rating
4
0
VA
1
Digital input connection to the base cannot use Mosfet solid state switches. Input switching must be
mechanical.
2
If using 4-20mA, add a 500Ω resistor across the input terminals.
3
Analog inputs will trigger 10Vdc ‘high’ if using 24Vac input and a series Diode (1N400x).