Direct Fired Heater - Daikin Skyline OAH003GDAC Installation And Maintenance Manual

Direct Fired Heater

Improper installation, adjustment, alteration, service, or
maintenance can cause property damage, injury, or death.
Read the installation, operating and maintenance instructions
thoroughly before installing or servicing this equipment.
The use and storage of gasoline or other flammable liquids
and vapors in open containers in the vicinity of this appliance
is hazardous.
If you smell gas:
1. Open windows.
2. Do Not touch electrical switches.
3. Extinguish any open flames.
4. Immediately call your gas supplier.
Failure to provide proper venting could result in property
damage, serious injury, or death.
The unit must have the desiccant reactivation exhaust
properly vented to the outside of the building.
An optional direct fired burner consists of the burner, gas train,
and a pCO controller. The pCO
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direct fired gas heater and its safeties. It is not a unit controller.
A manual shut-off and sediment trap (supplied by others)
shall be installed on the outside of the unit's gas vestibule
to be used as the main shut-off of the unit's gas supply, or
as how local codes require the installation of such a valve. A
minimum 1/8 inch NPT plugged tapping, accessible for test
gauge connection, must be installed immediately upstream
of the gas supply connection to the unit. All the different gas
piping configurations are not shown in this manual because of
the many manifold arrangements that are available for various
building code and insurance company requirements, and types
of gas modulation. Gas piping must comply with "Standards of
National Board of Fire Underwriters" and all applicable local
codes and insurance company requirements.
Contact the CDI factory for exact gas piping dimensions,
if required. Gas pipes are taped off at the factory before
shipment. Be sure to run correctly sized gas line to unit
(same size or larger than that used on the unit). Install a
manual shutoff valve and a reducing regulator if required. A
1/4 inch NPT pressure tap upstream of the unit regulator is
recommended.
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WARNING
CAUTION
DANGER
WARNING
controller only controls the
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Installation
The following recommendations are not intended to
supplant any requirements of federal, state, or local codes
having jurisdiction. This equipment shall be installed
and wired in accordance with regulations of the National
Boards of Fire Underwriters, National Electric Code, and
local governing bodies. In Canada, equipment should
be installed in accordance with the applicable provincial
regulations. Furthermore this document is not to relinquish the
responsibility of the installer from the correct application of the
equipment, nor the safe and correct operation of the unit(s)
and other systems that may be required or associated with it.
When the unit is to be installed in an airplane hangar, install
the unit in accordance with the standard for "Aircraft Hangers",
ANSI/NFPA 409 and with CAN/CGA B149 Installation Code
when in Canada. When the unit is to be installed in a public
garage, install the unit in accordance with the Standard for
"Parking Structures", ANSI/NFPA 88A or with the Standard for
"Repair Garages", ANSI/NFPA 88B and with CAN/CGA B149
Installation Code when in Canada. Before the unit is turned on
for the first time. Steps need to be taken to provide adequate
pressure relief for the building to avoid over pressurizing
the building when the unit is operated at rated capacity.
Pressure relief of the building can be accomplished by taking
into account, through standard engineering methods, the
structure's design infiltration rate; by providing properly sized
relief openings; or by interlocking a power exhaust system; or
by a combination.
The DF unit must be LEVEL and located so that there is
enough clearance for opening the access doors. In addition
to allowing room for access door swing, NEC or others may
require 42" or more of clearance in front of the electrical
panel or vestibule. Refer to the submittal documents for air
flow direction through the unit so that it may be positioned to
accommodate
Necessary duct work. Also note from the submittal where
electrical and gas hookup points are located so that proper
connections can be made. Remember to verify position and
ability of support beams, pad, or curb to properly support the
unit. At a minimum all DF units are to be supported around the
perimeter and across any shipping split. Verify that support
structure dimensions coincide with the unit. Locate the unit so
that air intakes are not too close to any exhaust fan outlets,
gasoline storage, or other contaminants that could potentially
cause dangerous situations. The use and storage of gasoline
or other flammable vapors and liquids in open containers in the
vicinity of this appliance is hazardous. The DF series is burning
gas directly into the air stream being heated, therefore anything
passing across the burner may be combustive. If the DF series
unit is used in an explosion proof environment verify that the
potentially explosive materials cannot enter the unit intake(s).
Prior to locating the unit, authorities that have jurisdiction
should be consulted before installations are made.
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