Hot Surface Igniter - STA-RITE SR200NA Service Manual

SECTION FOUR – Routine Maintenance and Professional Servicing

Hot Surface Igniter

L L L L o o o o c c c c a a a a t t t t i i i i o o o o n n n n
The Igniter is located in the top center of the
Combustion Chamber.
F F F F u u u u n n n n c c c c t t t t i i i i o o o o n n n n
The Hot Surface Igniter (HSI) is heated electrically to
ignite the Burner. The HSI requires 120 VAC power
which is supplied by the Ignition Control Module. The
HSI requires about 20 seconds to reach operating tem-
perature.
S S S S e e e e r r r r v v v v i i i i c c c c i i i i n n n n g g g g P P P P r r r r o o o o c c c c e e e e d d d d u u u u r r r r e e e e
1. Turn off the pump and all electrical power to the
heater.
2. Disconnect the HSI wires at the Molex connector.
3. Loosen the nuts holding the Igniter Bracket.
4. Carefully remove the HSI from the unit.
5. Check resistance across HSI to test. Resistance
should be 40-75 at room temperature. Cracks in
HSI which affect performance will alter resistance
level but may be too small to see.
S S S S a a a a f f f f e e e e t t t t y y y y P P P P r r r r e e e e c c c c a a a a u u u u t t t t i i i i o o o o n n n n s s s s : : : :
The HSI Igniter is fragile and easily bro-
ken if jarred. Use caution when removing it.
Igniter
2664 1096
6. Replace the HSI by reversing Steps 1 through 4
above.
N N N N O O O O T T T T E E E E : : : : Replace the Igniter Gasket whenever you
replace the HSI. Tighten the igniter hold-down nuts to
20 inch-lbs. torque. Overtightening can crack the HSI
base.
7. Start the Combustion Air Blower and check for
leaks with a soapy water solution.
Use only the specified replacement ignit-
er. Other ignitors can fail to reach the required operat-
ing temperature in the required time.
4-19
Kit
P/N 77707-0054
includes Igniter and
Gasket
Igniter Bracket
P/N 42001-0030S
Igniter
P/N 42001-0054
Igniter Gasket
P/N 42001-0066S
(Not shown)