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Start-Up Procedures
Start-Up Responsibility
DANGER
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.
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 insufficient airflow or
temperature rise greater than specified (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
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.
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.
Optional Gas Heat
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IM 1125-13 • REBEL ROOFTOPS