AERCO SmartPlate - Manual (Page 29)

SmartPlate Installation, Operation & Maintenance Manual
CHAPTER 4 – ADJUSTMENT
OMM-0069_0E AERCO International, Inc.  100 Oritani Dr.  Blauvelt, NY 10913 Page 29 of 138
SP-100 Phone: 800-526-0288 PRI: 11/26/2013
Figure 4-4. Control Box – Front View
NOTE
When the Power Switch on the Control Box is set to the ON
position, it also energizes the internal 24 VAC Transformer in the
Control Box. This in turn provides 24 VAC power to the Control
Valve Actuator, provided that the water temperature at the heater
outlet is below the high temperature limit setting.
4.2.3 Setpoint Temperature Adjustment
The setpoint temperature is adjusted using the controls and displays provided on the
Temperature Controller (Eurotherm 2408). These controls and displays are illustrated and
described in Figure 4-5 and Table 4-2. If necessary, setpoint temperature adjustment is
accomplished as follows:
1. With the Control Box door open, set the ON/OFF POWER switch on the right side to the ON
position. The Temperature Controller will initiate a self-test for approximately 3 seconds.
Following the self-test, the top display will show the current outlet water temperature of the
Heater and the lower display will show the current setpoint temperature stored in memory
(default = 140°F).
2. Ensure that the Temperature Controller is set to the AUTO (automatic) mode and the AUTO
indicator is lit. If the MAN indicator is lit, press the AUTO/MAN button to toggle the mode
setting. Indicator OP1 should also be lit.
3. If the lower display does not show the desired setpoint temperature, press the ▲ or ▼ arrow
button to change the display to the desired value.