Start-Up
1. Set the thermostat to the lowest setting.
2. Turn off all electric power to the appliance.
3. This appliance is equipped with an ignition device which
automatically lights the burner. Do NOT try to light the
pilot by hand.
4. Open the control access panel.
5. Turn the gas control clockwise to “OFF”.
6. Wait ve (5) minutes to clear out any gas. Then, smell
for gas, including near the oor. If you smell gas, STOP!
Follow step “B” in the DANGER label on this page. If you
don't smell gas, proceed to the next step.
7. Turn the gas control counter-clockwise to “ON”.
8. Close the control access panel.
9. Turn on all electric power to the appliance.
10. Set thermostat to desired setting.
11. If the furnace will not operate, refer to Turning off Gas to
the Unit, and call your service technician or gas supplier.
Turning off Gas to the Unit
1. Set the thermostat to the lowest setting.
2. Turn off all electrical power to the appliance if service is
to be performed.
3. Open the control access panel.
4. Turn the gas control knob clockwise to “OFF”. Do not
force.
5. Close the control access panel.
Service
The furnace DDC controller has diagnostic information for
troubleshooting the furnace operation. The ignition control
module has a LED light that will ash when an abnormal
condition occurs. See Table 19 and Table 21 for an explanation
of the diagnostic information.
Maintenance
Planned maintenance is the best way to avoid unnecessary
expense and inconvenience. Have this system inspected
at regular intervals by a trained and experienced service
technician. The following service intervals are typical for
average situations but will have to be adjusted to suit your
particular circumstances.
Fuel pressure settings and control settings should be made
only by persons thoroughly experienced with the burner and
control system, and must not be tampered with by persons
without such experience.
Always replace covers on burner controls and boxes as the
electrical contacts are sensitive to dust and dirt. Perform
maintenance of controls, gas valves, and other components in
accordance with instructions contained in the manufacturer's
bulletins.
Monthly
Check air lters and replace if dirty.
Twice Yearly
Burner Air - Check burner fan wheel for dirt buildup and lint.
Check combustion air intake louver and ue box for dirt buildup
and accumulation of windborne debris.
Cleaning - Inspect ue tubes and combustion chamber,
cleaning as required. Keep burner vestibule clean. Dirt and
debris can result in burner air blockages.
Yearly
Heater and Ventilating systems - Inspected by a qualied
service agency once a year.
Gas Train - Check all valves, piping and connections for
leakage. Inspect and clean ame rod, ignition electrode, and
burner manifold.
Condensate Pan/Drain/P-Trap - Check pan, drain, and p-trap.
oPTIonal Gas heaT
www.DaikinApplied.com 33 IM 1058-8 • MAVERICK II ROOFTOP SYSTEMS
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