Electric Ignition System

2.5.1.3

**************************************************************************

NOTE: Natural gas pilot ignition system may be

considered only when natural gas is available at the

site.

**************************************************************************

NOTE: Choose this subparagraph or the subparagraph

below, entitled "Natural Gas Pilot Ignition System."

**************************************************************************

Burner shall be equipped with an electric ignition system. System shall be

either high energy ignition or glow rod type. Gas ignition system is not

acceptable. High energy ignition system shall use stored energy to develop

2000 Vdc pulses. Glow rod system shall use a low voltage, carbon rod

electrode which develops a tip temperature of 1427 degrees C 2600 degrees F.

Provide ignition system complete.

2.5.1.4

Natural Gas Pilot Ignition System

**************************************************************************

NOTE: Natural gas pilot ignition system may be

considered only when natural gas is available at the

site.

**************************************************************************

NOTE: Choose this subparagraph or the subparagraph

above, entitled "Electric Ignition System."

**************************************************************************

Provide a complete interrupted type natural gas-fired, spark ignited pilot

system for the burner assembly. Combustion air supply shall be from the

burner windbox. Lighting system shall have capacity to stabilize firing

during startup periods. Lighter shall be arranged for easy removal and

servicing while boiler is in operation. Furnish ignitor complete with

spark rod and power pack. Power pack shall operate on 120 volt, 60 cycle,

single phase power. Provide gas piping, to one point of supply, including

necessary gas pressure regulators. Ignitor system shall include controls,

gages, flame safety systems, interlocks and accessories to comply with

Industrial Risk Insurers' (I.R.I.) (formerly F.I.A.) requirements and

applicable codes and regulations.

2.5.1.5

Windbox

Construct of carbon steel plate not less than 10 gage thickness with 6 mm

1/4 inch thick front plate. Design windbox to provide even and uniform air

entrance into the burner register and seal weld to the boiler front wall.

Provide windbox with support legs.

2.5.1.6

Purge Connection

Provide [steam] [air] purge connection, properly valved, for purging oil

from gun prior to removal from burner.

SECTION 15501N

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