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1.800.627.4499
Integral Indirect Gas-Fired Heat Module
OPTION
OPERATION
Prior to starting a gas heat module for the first time, test the gas pressure at the main gas
supply line and at the manifold. Many gas heat modules will have a split manifold having
two pressure test taps and it may be necessary to run the pressure test twice if only one
manometer is available. In some cases, modulating gas valves are used and correct results will
only be obtained if the call for heat is at 100%.
6.2 VERIFY PROGRAMMING OF THE DOAS CONTROLLER
Shut off gas at supply line.
6.2.1 Disable the Integrated Controller
Turn the unit disconnect switch ON. As soon as the disconnect switch is turned ON, the
controller will begin to boot-up, which takes about 10 seconds. When the Home Screen is
displayed, press the ESCAPE button to go into the Main Menu. Scroll down to Unit Enable and
press ENTER. Verify that the screen shows "OFF". This will prevent the gas heat module from
trying to run and light prematurely. Press the ESCAPE button to exit without changing the
status.
NOTE: Quick-Start is
used to test the gas
supply and general
operational readiness of
the gas heat module. It
verifies that correct gas
pressure is being applied
to the system and that
the system will fire and
produce heat in a test
mode. Quick-Start is not a
substitute for full configu-
ration of the controller.
NOTE: Whenever
the unit disconnect
switch is turned
OFF, turn OFF the gas
supply.
NOTE: For further
information on how
to navigate the con-
troller, see the Integrated
Programmable Controller
user manual.
ARC FLASH AND ELECTRIC SHOCK HAZARD
Arc flash and electric shock hazard. Disconnect all electric power supplies, verify with a volt-
meter that electric power is off and wear protective equipment per NFPA 70E before working
within electric control enclosure. Failure to comply can cause serious injury or death.
Before proceeding with Quick-Start, read all instructions.
The line side of the unit disconnect switch contains live high-voltage.
The only way to ensure that there is NO voltage inside the unit is to install and open a remote
disconnect switch and verify that power is off with a voltmeter. Refer to unit electrical sche-
matic. Follow all local codes.
WARNING
RISK OF FIRE OR EXPLOSION
Testing of gas pressures involves removal of pressure tap plugs, which will permit some loss
of combustible gas to the atmosphere. Any buildup of combustible gases can cause a fire or
explosion.
When gas lines or gas pressure taps are opened, turn off all power to the DN-Series unit at
the main disconnect switch. If gas can be smelled, wait five minutes for the gas to dissipate
before turning power back on.
WARNING
FIGURE 6.2.0 DOAS CONTROLLER
UP ARROW BUTTON
ENTER BUTTON
DOWN ARROW BUTTON
ESCAPE BUTTON
DISPLAY SCREEN
ALARM BUTTON
PROGRAM BUTTON
