10
Figure 2-6. Heating and Cooling CN9121A [One DC Solid
State Relay Driver for Heating (SP1), 3A Mechanical Relay
for Cooling (SP2)]
Figure 2-7. Wiring of single output controller
CN9110A, CN9210A
NOTE
The CN9000A Series has been designed to be as immune as
possible to electrical interference. However, electrical noise
suppression may be required in some applications, particularly if
the output of the controller is firing a contactor or coil. A noise
suppression kit is available for use with 115VAC, OMEGA part
no. 1821-101 (consists of an RC network or metal oxide varistor
(MOV)).
TYPICAL WIRING FAST BLOW FUSE
L
N
COOLING WATER
3A (max)
SOLENOID
VALVE
LOAD
SSR output SP1
DC
INPUT
SSR
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