14
V. CONTROL COMPONENTS
V. a
–
COMPONENT IDENTIFICATION & OPERATION
(CONT)
a.2 Relay Board
Relay Board Operation
Conditions and distributes DC power for the
DC control components
Receives DC signals from Smart Chill control
and actuates Triacs to energize control relay
coils
LED indicators on board indicate which Triac is
energized
Jumper Pins adjacent to LED indicators to
manually operate Triacs
Ledger
1
14VDC input
2
115vac Triac Outputs to Control Relays
3
High Fan Relay
4
Low Fan Relay
5
12VDC Triac gate signal from Smart Chill
6
LED indicators & Jumper
7
Pins DC power distribution to controls
8
Voltage test points
3
4
1
2
5
7
6
8
