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2017
J99x Series BASO® Replacement Pilot Burners
Introduction
This application note aids the appliance engineer or
authorized service contractor in locating and testing
a pilot burner in a standing pilot application. J99x
Series replacement pilot burners are manufactured
with a variety of tips and mounting configurations.
Representative types of mounting with standard
pilots are illustrated in Figure 1. Dimensions are
approximate and may vary, provided the
requirements of good ignition are met.
Note:
When a pilot is to be installed on an
appliance already in the field, obtain the appliance
manufacturer's recommendations for the correct pilot
specification and location dimensions for the
particular model.
* Mount pilot ignition port 3/8 in. (9.53 mm) above and 1/4 in. (6.35 mm) away from the center of nearest burner port.
o
45
J990MDA-2**
J999MDA-2**
** Mount pilot ignition port 1/4 in. (6.35 mm) above and 1/4 in. (6.35 mm) away from the center of nearest burner port.
Note: All replacement pilot burners come with a natural gas inlet fitting (Y90AA-32xx, -62xx, or -72xx)
pre-assembled in the pilot burner. A LP gas inlet fitting (Y90AA-42xx) is included and may be used if required.
Please contact the manufacturer of the appliance prior to making any changes to the original installation.
© 2017 BASO Gas Products
Part No. BASO-INS-J99xREPLACEMENT, Rev. B
J999MKA-2*
J999MYA-2*
J991MDA-2**, J993MDA-2**
J995MDA-2**, J997MDA-2**
Figure 1: Possible Mounting Positions
J99x Series BASO® Replacement Pilot Burners
Application Note
Location Considerations
Consider the following when locating the pilot burner:
Locate the pilot burner so that it can be reached
easily for lighting.
Locate the pilot burner in a position that has a fixed
relation to the main burner (see Figure 1).
Locate the pilot burner in a position that receives
incoming air and not products of combustion from
the main burner. Locate the pilot burner where it will
not be affected by an excessive draft of incoming air.
Locate the pilot burner in such a position that it does
not receive the full force of igniting or extinguishing
puffs from the main burner.
Locate the pilot burner in a position that allows
removal for cleaning.
J999MHA-2*
J992MDA-2**
J996MDA-2**
J99x Series Pilots
Issue Date
September 14,
J994MDA-2**
J998MDA-2**
www.baso.com
1
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Summary of Contents for Baso J99x Series
- Page 1 Application Note J99x Series Pilots Issue Date September 14, 2017 J99x Series BASO® Replacement Pilot Burners Introduction Location Considerations This application note aids the appliance engineer or Consider the following when locating the pilot burner: authorized service contractor in locating and testing ...
- Page 2 When the pilot is applied properly, the thermocouple conditions that maintain the BASO power unit in the produces an open circuit millivoltage. Normal On position. Perform the following procedure to assure...
- Page 3 7. Return the pilot to normal operation by turning the manual B valve to the fully opened position and 4. Push and hold down the reset button of the reconnecting the thermocouple to the BASO power BASO power unit until it remains down. unit.
- Page 4 Performance specifications are nominal and conform to acceptable industry standards. All agency certification of BASO products is performed under dry and controlled indoor environmental conditions. Use of BASO products beyond these conditions is not recommended and may void the warranty. Product must be protected if exposed to water (dripping, spraying, rain, etc.) or other harsh environments. The original equipment manufacturer or end user is responsible for the correct application of BASO products.