Eclipse ImmersoJet v2.20 Design Guide 330, 10/02
For the ignition system you should use:
• 6000 VAC transformers
• full wave spark transformers
• one transformer per burner.
Do not use:
• 10,000 VAC transformers
• twin outlet transformers
• distributor type transformers
• half wave spark transformers.
ImmersoJet burners will ignite reliably at any input within the
ignition zone shown in the appropriate burner data sheet.
However, it is recommended that low fire start be used. Local
safety and insurance requirements demand that you limit the
maximum time that a burner takes to ignite. These time limits vary
from country to country.
The time that a burner takes to ignite depends on:
• the distance between the gas shut-off valve and the burner
• the air/gas ratio
• the gas flow at start conditions.
In the USA, with a time of 15 seconds to ignition, there should be
sufficient time to ignite the burners. It is possible, however, to have
the low fire too low to ignite within the time limit. Under these
circumstances you must consider the following options:
• start at higher input levels
• resize and/or relocate the gas controls
A flame monitoring system consists of two main parts:
•
a flame sensor
•
flame monitoring control
Flame sensor
There are two types that you can use for an ImmersoJet burner:
•
U.V. scanner
•
flame rod
You can find U.V. scanner information in:
•
Info Guide 852; 90º U.V. scanner
•
Info Guide 854; straight U.V. scanner
•
Info Guide 855; Solid State U.V.I.R. scanner
•
Info Guide 856; self-check U.V. scanner.
You can find flame rod information in:
•
Bulletin / Info Guide 832
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