Start-Up Procedures
Start-up and service of this equipment must be performed by
trained and experienced technicians. It is highly recommended
that the initial start-up and future service be performed by
Daikin trained technicians who are familiar with working on
live equipment. A representative of the owner or the operator
of the equipment should be present during start-up to receive
instructions in the operation, care and adjustment of the unit.
WARNING
Overheating or failure of the gas supply to shut off can
cause equipment damage, severe personal injury or
death .
Turn off the manual gas valve to the appliance before
shutting off the electrical supply.
DANGER
If you do not follow these instructions exactly, a fire or
explosion may result causing property damage, personal
injury, or loss of life .
A. This appliance does not have a pilot. It is equipped with
an ignition device which automatically lights the burner. Do
not try to light the burner by hand.
B. Before operating, smell all around the appliance area for
gas. Be sure to smell next to the floor because some gas
is heavier than air and will settle on the floor.
What to do if you smell gas:
• Do not try to light any appliance.
• Do not touch any electric switch, do not
use any phone in your building.
• Immediately call your gas supplier from a
phone in a neighboring building. Follow
the gas supplier's instructions.
• If you cannot reach your gas supplier,
call the fire department.
C. Use only your hand to push in or turn the gas control knob.
Never use tools. If the knob will not push in or turn by hand,
don't try to repair it, call a qualified service technician.
Force or attempted repair may result in a fire or explosion.
D. Do not use this appliance if any part has been under water.
Immediately call a qualified service technician to inspect
the appliance and to replace any part of the control system
and any gas control which has been under water.
Start-Up Responsibility
The start-up organization is responsible for determining that
the furnace, as installed and as applied, will operate within the
limits specified on the furnace rating plate.
1 .
The furnace must not operate at an airflow below the
specified Minimum Airflow CFM (refer to
). On variable air volume systems it must
be determined that the furnace will not be operated
if or when system cfm is reduced below the specified
minimum airflow cfm.
2 .
It must be established that the gas supply is within the
proper pressure range (refer to
Operating Procedures
Before Start-Up
1 .
Notify inspectors or representatives who may be required
to be present during start-up of gas fuel equipment.
These could include the gas utility company, city gas
inspectors, heating inspectors, etc.
2 .
Review the equipment and service literature and become
familiar with the location and purpose of the furnace
controls. Determine where the gas and power can be
turned off at the unit and before the unit.
3 .
Determine that power is connected to the unit and
available.
4 .
Determine that the gas piping, meter, and service
regulator have been installed, tested, and meet the
equipment requirements.
5 .
Determine that proper instruments will be available for
the start-up. A proper start-up requires the following:
voltmeter, manometer or gauges with ranges for both
manifold pressure and inlet gas pressure.
Start-Up Preliminary
Close gas main .
1 .
Check the burner fan wheel for binding, rubbing, or loose
setscrews.
2 .
Check power.
3 .
Purge the gas lines.
4 .
Leak check. Using a rich soap-water mixture and a
brush, check the gas lines for leaks. Correct all leaks
before starting furnace.
IM 1058-8 • MAVERICK II ROOFTOP SYSTEMS
32
www.DaikinApplied.com
o
PTIonal
G
as
h
eaT
