AERCO Esteem Boiler with EZ-Set Controller - Manual (Page 137)

GF-135 Esteem 399 Low NOx Boiler
Chapter 18
OMM-0089_0A Installation, Operation & Maintenance Manual Controller Operation
18.4.2 Demand Type (Default: Switch)
Figure 18-28: DEMAND TYPE Menu
Demand Type allows the installer to select the type of device which will generate a domestic hot
water call. Press the UP or DOWN buttons to select the DHW Demand Type then press the OK
button to store the set-ting. The DHW Demand options are:
• Switch: A domestic hot water call from an aquastat or dry contact switch will enable the
Esteem with a fixed setpoint for a domestic hot water call.
• Sensor: This option requires the use of Indirect Water Heater Sensor 69107, which is
included with every Esteem boiler. The Esteem will monitor the DHW storage temperature
and generate a domestic hot water call when the temperature drops below the DHW
Storage Setpoint - DHW On Differential.
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18.4.3 Boiler DHW Setpoint (Default: 186°F [86°C])
Figure 18-29: BOILER DHW SETPOINT Menu
Boiler DHW Setpoint is the fixed boiler setpoint temperature during a domestic hot water call
when the Switch option is chosen in DHW Demand. Press the LEFT or RIGHT buttons to adjust
the Boiler DHW Setpoint then press the OK button to store the setting.
18.4.4 DHW Storage Setpoint (Default: 140°F [60°C])
Page 137 of 188 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0089_0A
MC1 06/19/14 Ph.: 800-526-0288