ESA ESTRO - E7014P rev. 02 - 03/05/17
www.esapyronics.com
21
PARAMETER
VALUE DESCRIPTION
N° NAME
25 EXP Installed
Inhibited
The instrument does not control the expansion cards. This configuration
is needed when the expansion cards are not installed or if the EXP-3
expansion is present.
Enable
The instrument activates the expansion card control. This configuration
is necessary when the EXP-2, EXP-4 and EXP-5 expansion cards are
installed.
27
Air pressure
switch
Inhibited The air pressure switch status is not checked.
Waiting
The missing air pressure switch signal implies:
• During the purge phase it determines the timer reset;
• With continuous type air control and burner on it determines shut down
and waits for the signal to return (automatic reignition).
• With discontinuous or impulsive type air control, with burner on, it deter-
mines the status change for air deactivation.
Lockout
The missing air pressure switch signal implies:
• During the purge phase it determines the timer reset;
• With continuous type air control and burner on it determines shut down
in lockout for lack of air (reset is required).
• With discontinuous or impulsive type air control, with burner on, it deter-
mines the status change for air deactivation.
Lockout after 5
sec
The device expects the air pressure switch signal within 5 seconds of
activation of the air valve or blower otherwise it stops in lockout. Once the
signal is received, the ignition cycle continues and another missing signal
will cause the same effects as the “Lockout” section.
Lockout after 20
sec
The device expects the air pressure switch signal within 20 seconds of
activation of th air valve or blower otherwise it blocks. Once the signal is
received, the ignition cycle continues and another missing signal will
cause the same effects as the “Lockout” section.
28
Thermostat
input
Inhibited The thermostat status connected to the expansion card is not checked.
Enable
The instrument waits for the thermostat signal connected to the expan-
sion card before switching the burner on. if there is no signal the burner
is shut down and waits for the signal to return.
29
Flow or limit
switch control
Inhibited
The position of the air damper via the limit switch or the air flow detected
via the flow switches, is not checked for prepruge or burner ignition pha-
ses.
Local
The instrument controls the air damper to regulate the air flow for purge
and ignintion. To time the purging, the damper is commanded to open
and the instrument checks the consent of the maximum position limit
switch or the air presence flow switch (FSL) for purging. After this, to acti-
vate burner ignition, the damper is commanded to close and the instru-
ment checks the consent of the minimum position limit switch or the
maximum flow switch (FSH) for ignition.
Remote
The air damper position or the air flow is not controlled by the instrument
inputs, but by a remote supervisor, which sends specifics serial com-
mands to the instrument to time the purging or to perform burner ignition
according to the shutter position or air flow. This function used in the past
is not used in recent applications.
Only FSL
The instrument checks the maximum air damper position limit switch or
air presence flow switch for purging (FSL) to time the purging. Once pre-
purge timing is over, the instrument moves directly onto ignition.
Only FSH
The instrument checks the consent of the air damper minimum position
limit switch or maximum ignition flow switch (FSH) to activate burner igni-
tion.
ZSL Gas valve
Before carrying out ignition, check the presence of the closed gas valve
limit switch signal via the FSH expansion input. After the ignition phase,
the device checks that the signal disappears.
To Next Page
Loading...
Need help?
General
