User Guide

13
5.0 ACVMax Operation
5.4 Status Line Messages
Status Line Message Description
Standby
Indicates that the Prestige 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.
B
oth 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 Prestige is a slave 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 set-
point.
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 Prestige at the
completion of a call.
DHW Post Pump
The domestic hot water circulator is running to remove heat from the Prestige 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 Prestige shut down is displayed.