IM 1287-6 • REBEL APPLIED ROOFTOP 148 www.DaikinApplied.com
Operations
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.
WARNING
Testing for gas leaks with an open ame can cause an explosion or re
resulting in property damage, personal injury, or death. Use a commercially
available soap solution made specically for the detection of leaks to check
all connections.
CAUTION
Hot surface hazard. If the furnace has been operating prior to service, allow
chimney ue, gas heat exchanger, and combustion manifold to cool before
servicing. Failure to allow hot surfaces to cool may result in personal injury.
Start-Up Responsibility
The start-up organization is responsible for determining that
the furnace, as installed and applied, will operate within the
limits specied on the furnace rating plate.
1. The furnace must not operate at insucient airow or
temperature rise greater than specied (refer to Table
37 on page 147 and Table 38). On variable air volume
systems it must be determined that the furnace will not
be operated if or when system airow is reduced below
the specied minimum airow.
2. It must be established that the gas supply is within the
proper pressure range (refer to Table 37 on page 147
and Table 38).
Start-up and service of this equipment must be
It is highly
recommended that the initial start-up and future service be
performed by Daikin Applied 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. Ensure that all required equipment and instruments are
available for startup.
Preliminary Start-Up
1. Close gas main.
2. Check the combustion inducer fan wheel for binding,
rubbing, or loose setscrews.
3. Conrm supply voltage.
4. Purge the gas lines.
5. Leak check. Using a rich soap-water mixture and a
brush, check the gas lines for leaks. Correct all leaks
before starting furnace.
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