Brochure

Emerson Climate Technologies
104
EX Valves & Controls
EC2-512 Condensing Unit Controller for up to 2 compressors
and 2 fans
Inputs
1 = Suction pressure
2 = Condenser pressure
3 = Safety switch comp 1
4 = Safety switch comp 2
5 = Safety switches fans
Block Diagrams
EC2-71x Condenser Controller for up to 4 fans
Inputs
1 = Safety switch fan 1
2 = Safety switch fan 2
3 = Safety switch fan 3
4 = Safety switch fan 4
5 = Condenser pressure
Inputs
1 = Condenser pressure
2 = Ambient temperature
EC2-552 Condensing Unit Controller for 2 single stage
compressors or 1 Digital Scroll
TM
and 1 single stage
compressor
Inputs
1 = Suction pressure
2 = Condenser pressure
3 = Safety switch comp 1
4 = Safety switch comp 2
5 = Temperature input
EC2-74x Condenser Controller with fan speed control
187
Outputs
3 = Speed controlled fan with EC-
motor
4 = Sprinkler
5 = Solenoid valve at 2 stage
condenser coil
10= Fan speed Power Module
Outputs
6 = Fan 1
7 = Fan 2
8 = Fan 3
9 = Fan 4
Outputs
6 = Compressor 1
7 = Compressor 2
8 = Fan 1
9 = Fan 2
Outputs
6 = Digital Scroll
TM
Compressor
7 = Single Stage Compressor
8 = Speed controlled fan
with EC-motor
10 = PWM Digital Scroll
Solenoid valve
EC2 Series