AERCO Innovation (G-13-1854 and above) - Manual (Page 58)

Innovation Water Heaters Installation, Operation & Maintenance Manual
CHAPTER 4 – INITIAL START-UP
Page 58 of
196 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
OMM-0078_0J
PRI: 11/22/2013
Phone: 800-526-0288
GF-128
When calibrating temperature control, observe the following:
Temperature Control Calibration
1. The unit must be in the Auto mode of operation.
2. The Outlet Feedback option in the Tuning Menu must be set to DISABLED while
performing calibration.
3. Monitor the OUTLET TEMPERATURE display and VALVE POSITION bar-graph to set load
conditions and observe the effect of adjustments.
4. Perform the calibration using the Tuning Menu of the C-More Control Box.
5. Make small adjustments and allow time between adjustments for the outlet water
temperature to stabilize.
6. Maintain water flow as constant as possible during these adjustments.
7. Ensure that recirculation loops are operational while the calibration is being performed.
8. Upon completion of calibration, set the Outlet Feedback back to ENABLE.
Temperature control calibration is accomplished by performing the Minimum and Maximum Load
Adjustment procedures in sections 4.6.2 and 4.6.3, respectively.
4.6.1 Setting the Outlet Water Temperature Setpoint
The setpoint temperature of the unit may be changed using the following steps. However, once a
setpoint has been changed, recalibration may be necessary. The temperature calibration
procedures are provided in sections 4.6.2 and 4.6.3.
To adjust the unit’s setpoint, proceed as follows:
Setting Outlet Water Temperature Setpoint
1. Press the MENU key until Configuration Menu is displayed.
2.
Press the ▲ or ▼ arrow key until Internal Setpt is displayed along with the present setpoint
temperature.
3. To change the setpoint, press the CHANGE key. The display will begin to flash.
4.
Press the ▲ or ▼ arrow key until the desired setpoint is displayed.
5. Press the ENTER key to save the change.
4.6.2 Minimum Load Adjustment
With the unit in operation, check the temperature control at minimum load as follows:
Minimum Load Adjustment
1. While monitoring the VALVE POSITION bar-graph, create a minimum load on the system
that will yield a steady valve position between 25% and 35%.