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

base
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
Digital Output Rating
Digital Input
Analog Output
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).
IOM74
24Vac 60Hz
120V 10A
1
24-120Vac
0-10Vdc
Analog Input (7.5kΩ impedance)
Temperature Rating
Temperature Sensor
Power Rating
7
A
2,3
0-10Vdc and 4-20mA
-40 – 150°F (65°C)
10k Type 2 NTC
40 VA
November 2020 R105