Engineered air EngA G-TRAC2 User Manual

A G-TRAC2
IOM-25 15 of 42 Mar 99 R7
The following is a flowchart covering many general operating/troubleshooting situations. If a more detailed manual is
needed, contact the nearest EngA factory.
Is there a heat
required light
on indicating a
call for heat?
NO YES
Did the combustion
air proving switch
make after the
combustion fan
started? (Pre-purge
light on)
NO YES
G-TRA2 should
move
combustion air
actuator to the
max. pre-purge
position.
Control may
still be setting
the air and a
gas operator to
their light off
positions after
pre-purge is
complete.
Max. time 3
min.
G-TRAC2 energizes the
flame relay. The flame
relay will now attempt to
establish the flame.
(Trial for ign light
flashing).
NO YES
Do a controlled shut down.
If the combustion blower is on, turn off
the heat and do a heat exchanger
cool down, then shut off the
combustion blower and reset the pre-
purge timer.
Is the pilot
flame on?
NO YES
Lock out the burner if reset will try
cycle again.
Modulate the gas
and air.
If the flame relay is in the lock out mode, or will not
establish the flame and the G-TRAC2 is not in the
service mode, the G-TRAC2 will enter the lock out
mode. Reset G-TRAC2.
Flame Relay
Faulty
Is the main
gas on?
(Burner enabled
light on)
NO YES
Faulty Flame
Relay or gas
supply or
operator.
Depending on
cause of failure,
flame failure light
may be flashing.
Faulty ignition
pilot gas spark
BASIC BURNER OPERATION FLOW CHART
There is no
call for
heat.
Combustion fan will not start if
comb. A/S made when comb. Fan
is off.

Engineered air EngA G-TRAC2 Specifications

General

Brand	Engineered air
Model	EngA G-TRAC2
Category	Controller
Language	English