Lighting, Operation, And Shutdown Instructions - Schwank 4BN6-CB-24 Installation & Owner's Manual

11. LIGHTING, OPERATION, AND SHUTDOWN INSTRUCTIONS

LIGHTING:
1. A gas hose located inside the post supplies fuel to the burner.
Prior to each use of the heater inspect any visible portion of
the hose that is exposed. If there is any damage or wear to
the exposed hose, call a qualified gas service technician to
replace the damaged hose with one supplied from the manu-
facturer.
2. An "On / Off" toggle switch is located on the control cover be-
low the burner. To turn the heater "On" (start ignition se-
quence) place the toggle switch up to the "On" position.
3. After completing a 3 second pre-purge cycle the direct spark
ignition (DSI) control generates high voltage to the spark ig-
niter, and 24 volts to energize the gas valve.
3. The Burner will light and establish a steady flame.
4. Once the flame sensor determines there is a steady flame
established, the spark igniter is then de-energized.
5. If a flame is not established during the first 20 second Trial for Ignition (T.F.I.), the unit will per-
form an inter-purge and a second T.F.I. If a flame is not established during this attempt, an-
other inter-purge and T.F.I. will be performed. If a
(final) attempt, the unit will enter the soft lockout mode. The soft lockout mode is a 30 minute
time-delay after which the unit will reset to try to ignite the gas again, as in normal operation,
and will repeat the T.F.I. sequence.
6. If there is a loss of flame during the run mode, the unit will energize the spark within 0.8 sec-
onds and perform a T.F.I., without the gas valve being closed first, this is called Spark Resto-
ration. If a flame is not established during Spark Restoration the unit will repeat the process in
step number 5 (above).
10. If a flame is present with the Gas Valve de-energized the unit will enter a hard lockout mode.
If there is an internal fault detected within the control, this will also cause hard lockout. Any
hard lockout will require service by a qualified service person.
SHUTDOWN:
1. An "On / Off" toggle switch is located on the control cover below the burner. To turn the heater
"Off" place the toggle switch down to the "Off" position.
2. If the heater will not be used for some longer time period, or requires service, shut off the elec-
trical and gas supplies to isolate the heater.
flame is not established during the third
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4BN/L6-24,4SN/L5 -24 Manual
IM100310
RD: MAR, 2010
RL: 1A - BA