GF-135
Esteem 399 Low NOx Boiler
Chapter 10
OMM-0089_0A
Installation, Operation & Maintenance Manual EZ-SET Controller
Page
69
of
188
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
OMM-0089_0A
MC1 06/19/14
Ph.: 800-526-0288
Table 10-1: EZ-SET Controller Status Line Messages
Status Line Message
Description
Standby
Indicates that the Esteem is ready to respond when a demand is
received.
CH Demand
A central heating call has been received.
DHW Demand
A domestic hot water call has been received.
CH / DHW Demand
Central heating and domestic hot water calls are being received
simultaneously. Both calls are being satisfied simultaneously because
domestic hot water priority has been disabled.
DHW Priority
Central heating and domestic hot water calls are being received
simultaneously. Domestic hot water call is being satisfied first because
it has priority over central heating calls.
Priority Timeout
Central heating and domestic hot water calls are being received
simultaneously. The domestic hot water priority time limit has been
exceeded. Priority will now switch back and forth between central
heating and domestic hot water calls until one call is satisfied.
External Demand
An external modulation call has been received.
Slave Operation
The Esteem is responding to a call from the master Esteem boiler in a
cascade system.
Manual Operation
The burner or circulators have manually been enabled in the Installer
Menu.
CH Burner Delay
The burner will not fire until the call blocking time has elapsed.
DHW Burner Delay
The burner will not fire until the call blocking time has elapsed.
CH Setpoint Reached
The burner is not fired because the supply/system water temperature
exceeds the setpoint. The central heating circulator continues to
operate and the burner will fire again once the supply/system water
temperature drops below the setpoint.
DHW Setpoint Reached
The burner is not fired because the supply/system water temperature
exceeds the setpoint. The domestic circulator continues to operate
and the burner will fire again once the supply/system water
temperature drops below the setpoint.
CH Post Pump
The central heating circulator is running to remove heat from the
Esteem at the completion of a call.
DHW Post Pump
The domestic hot water circulator is running to remove heat from the
Esteem at the completion of a call.
Freeze Protection
The burner is fired because the freeze protection feature has been
activated. Freeze protection will end once the supply/system water
temperature is raised to 60ºF [16ºC].
Boiler Protection
The burner firing rate is being reduced because of an excessive
difference between the boiler supply and return temperatures. The
firing rate will begin increasing once the temperature difference is less
than 45ºF [25ºC].
Lockout Description
The lockout which currently has the Esteem shut down is displayed.
