Innovation Water Heaters Installation, Operation & Maintenance Manual
CHAPTER 4 – INITIAL START-UP
OMM-0078_0M
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
Page
65
of
216
GF-128
Phone: 800-526-0288
09/11/2015
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 F (1.1 to 1.65 degrees C) 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 F
(1.1 to 1.65 degrees C) 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.
