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tep 4:
Ignition ystem
14
gnition Transformer
or the ignition system, use a transformer with:
econdary voltage 6,000 to 8,000 VAC.
minimum econdary current 0.02 amp continuou .
full wave output.
DO NOT USE the following:
twin outlet tran former
di tributor type tran former.
rial For Ignition
t is recommended that low fire start be used.
under certain circumstances RatioAirs are capable of direct
spark ignition at higher gas inputs.
Most local safety codes and insurance requirements limit the
maximum trial for ignition time (the time it takes for a burner to
ignite). These requirements vary from one location to another;
check your local codes and comply to the strictest codes
applicable.
The time it takes for a burner to ignite depends on the
following:
he dis ance be ween he gas shu -off valve and he burner.
he air/gas ra io.
he gas flow condi ions a s ar -up.
The possibili y exis s where he low fire is oo low o igni e he
burner wi hin he maximum rial for igni ion ime. The following
op ions mus be considered under hese condi ions:
s ar a higher gas inpu levels.
resize and/or reloca e he gas con rols.
use bypass s ar gas.
clipse RatioAir v1 - Design Guide No. 115, 2/14/05
However,
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