AERCO Innovation (G-14-2265 and above) - Manual (Page 64)

Innovation Water Heaters Installation, Operation & Maintenance Manual
CHAPTER 4 – INITIAL START-UP
Page 64 of
206 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
OMM-0078_0L
PRI: 11/25/2014
Phone: 800-526-0288
GF-128
4.6.3 Maximum Load Adjustment
Check the temperature control at maximum load as follows:
Maximum Load Adjustment
1. While monitoring the VALVE POSITION bar-graph, create a maximum load on the system
that will yield a steady valve position between 80% and 90%.
NOTE
It may be necessary to open the outlet valve if it was closed during minimum
load adjustment to obtain a sufficient flow rate for maximum adjustment.
2. Wait several minutes to allow the outlet water temperature to stabilize under load
conditions.
3. Once stabilized, the OUTLET TEMPERATURE display should read no more than 2 to 3
degrees below the unit’s setpoint.
4. If the outlet temperature is stabilized, no adjustment is necessary. If the temperature is not
stabilized, proceed to step 5.
5. Press the MENU key and select the Tuning Menu.
6.
Press the ▲ or ▼ arrow key until Max Load Adj is displayed.
7. Press the CHANGE key. The display will begin to flash.
8.
Raise or lower the maximum load adjustment using the ▲ or ▼ arrow key. Increasing this
value will increase outlet water temperature, while decreasing it will decrease water
temperature.
9. Press ENTER to save the change. Allow time for the system to stabilize between
adjustments.
10. Repeat steps 5 through 9 as needed until the temperature is stabilized 2 to 3 degrees
below the unit’s setpoint.
If the outlet temperature does not maintain setpoint after a reasonable amount of time and
adjustment, contact your local AERCO representative.
NOTE
After performing Temperature Calibration and prior to placing the water
heater into service, be sure to set the Outlet Feedback option in the Tuning
Menu back to ON.