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
63
of
216
GF-128
Phone: 800-526-0288
09/11/2015
4.6 TEMPERATURE CONTROL CALIBRATION
Carefully follow the procedures below to properly set up the temperature control for the heater.
Ignoring this commissioning step may cause water temperature faults, poor water temperature
control, and rapid cycling of the heater.
The unit normally comes factory set and calibrated for a 130°F (54.4°C) setpoint (default value).
However, if a different setpoint temperature is desired, it can be changed using the procedure in
section 4.6.1. If the setpoint is changed, it must be done prior to temperature control calibration.
There are two primary adjustments for performing temperature calibration: Min Load Adj and Max
Load Adj (minimum and maximum load adjustment). Adjustments to these settings are made at
minimum and maximum load conditions and should be made in small increments, from 1 to 3
degrees F (0.55 to 1.65 degrees C). After making an adjustment, the outlet water temperature
must be allowed to settle for several minutes prior to making any further adjustments.
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.
