Innovation Hot Water Hot Water Boiler User Manual
- INTERNATIONAL
CHAPTER 4 – INITIAL START-UP
OMM-0120_0A
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
Page
57
of
174
GF-128-I
Phone: 800-526-0288
11/15/2016
4.5.1 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 4.5.2 and 4.5.3.
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.
4.5.2 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%.
NOTE
It may be desirable to shut off the outlet valve and use the hose bib (see
Figure 2-4) to simulate a minimum flow load condition
.
2.
Wait several minutes to allow the outlet temperature to stabilize under load conditions.
3.
Once stabilized, the OUTLET TEMPERATURE
display should read no more than 2 to 3 °F
(1.1 to 1.65 °C) above the unit’s setpoint.
4.
If the outlet temperature is stabilized, proceed to the Maximum Load Adjustment procedure
in section 4.6.3. 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
MIN LOAD ADJ
is displayed.
7.
Press the
CHANGE
key. The display will begin to flash.
8.
Raise or lower the minimum load adjustment in increments of one or two using the ▲ or ▼
arrow key. Increasing this value will increase outlet water temperature, while decreasing it
will decrease outlet 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 at no more than 2 to
3 °F (1.1 to 1.65 °C) above the unit’s setpoint.
