AERCO Esteem Boiler with EZ-Set Controller - Manual (Page 129)

GF-135 Esteem 399 Low NOx Boiler
Chapter 18
OMM-0089_0A Installation, Operation & Maintenance Manual Controller Operation
18.3.15 Frost Protection Setpoint (Default: -22°F [-30°C])
Figure 18-19: FROST PROTECTION SETPOINT Menu
Frost Protection will enable the central heating circulators if the outdoor temperature falls below
the Frost Protection Setpoint and no call is present. This feature requires using the outdoor
temperature sensor and is always active and cannot be disabled. Press the LEFT or RIGHT
buttons to adjust the Frost Protection Setpoint then press the OK button to store the setting.
Table 18-2: Frost Protection Circulator Operation
CH2 Pump/System Pump Auxiliary Boiler Pump DHW Pump CH (1) Pump
ON ON OFF ON
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18.3.16 Parallel Shift Value (Default: 0°F [0°C])
Figure 18-20: PARALLEL SHIFT VALUE Menu
Parallel Shift allows the CH setpoint to be externally adjusted when a Constant option is chosen
in CH Demand. When a Constant option is chosen in CH Demand, continuous CH1 and CH2
heating calls are generated. Simultaneous CH1 and CH2 calls will result in the boiler operating at
the highest CH1 or CH2 setpoint. The CH1 or CH2 Thermostat terminals with the highest
setpoint will be used to adjust the setpoint. If the Thermostat terminals with the highest setpoint
are open, the CH setpoint will decrease by the Parallel Shift Value. If the Thermostat terminals
with the highest setpoint are closed, the CH setpoint will return to the highest CH1 or
CH2setpoint. Press the LEFT or RIGHT buttons to adjust the Parallel Shift Value then press the
OK button to store the setting.
Page 129 of 188 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0089_0A
MC1 06/19/14 Ph.: 800-526-0288