Adjusting The Domestic Hot Water Temperature - Boilers; Heating System Temperature Adjustment - Boilers; Heating System Type Selection - Boilers; Outdoor Reset Adjustment - Boilers - Watts Aerco TAG-0072 GF-146-E Operation & Maintenance Manual

AM Series Boiler & Water Heater User Manual
CHAPTER 9 – OPERATION

9.7 Adjusting the Domestic Hot Water Temperature - Boilers

The domestic hot water temperature for an indirect tank is adjusted by pressing buttons
. When the buttons are pressed, the display, item "N" in Figure 9-1, shows the
and
domestic hot water setpoint being selected. The range within which the domestic hot water can
be set is 104°F (40°C) to 140°F (60°C).

9.8 Heating System Temperature Adjustment - Boilers

The boiler provides hot water to the heating system at the temperature set by adjusting buttons
as shown in Figure 9-1. To maximize the boilers' performance, the heating
or
temperature, should be set at a value that is just sufficient to maintain the desired temperature
of the rooms.

9.9 Heating System Type Selection - Boilers

The boiler is factory set for constant setpoint control.
The heating system type can be changed by accessing the Installer Menu per Section
9.16 and changing the 2003 parameter. One of the following heating modes can be
selected:
•
2003 = 00 "Constant setpoint with remote enable" (see Section 9.16)
•
2003 = 01 "Outdoor reset with remote enable" (see Section 9.16). An outdoor temperature
sensor is required for this setting.
•
"Outdoor reset"
2003 = 02
•
"Constant setpoint"
2003 = 03
•
2003 = 04 "0-10V control (remote setpoint)" (See Section 9.16). Settings 01 & 02 will wait
for a closed circuit between terminals 10 and 11 before firing.

9.10 Outdoor Reset Adjustment - Boilers

While in the "Installers' Menu", set the 2003 parameter to 01. In this mode the heating supply
temperature, calculated temperature in Figure 9-2, will be adjusted automatically based on the
input from the outdoor temperature sensor. The relationship between the outdoor temperature
and the supply water temperature, corresponds with the graphs shown in Figure 9-2. In order to
change the relationship between the supply water temperature and the outdoor temperature, all
the parameters listed in the sections below must be set.
OMM-0100_E • GF-146 • 11/15/2019 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 106 of 170