Parts List:
115
Pilot
Assembly
(1)
210-EI
Gas Valve (1)
210-EI-Mod
Module
(1)
212
Switch
(1)
213
Wires
for
switch
(1)
256/241
Heat Shield / Insulation for valve (1)
270/271
Heat Shield / Insulation for module (1)
274
Female Connector (12)
279
Ground
Connector
(1)
576-40VA
Transformer
(24V)
579
Power
Cord
(1)
616
High
Temp
Wire
(8)
617
Wire
Nut
(6)
649
Pilot
Tube
(1)
SSC-HC24
Flex
Line
(2)
CHECKOUT__________________________________
Check out the gas control system:
y
At initial installation of the appliance.
y
As part of regular maintenance procedures. Mainte-
nance intervals are determined by the application.
y
As the first step in troubleshooting.
y
Any time work is done on the system.
Perform Visual Inspection.
With power off, make sure all wiring connections
are clean and tight.
Turn on power to appliance and ignition module.
Open manual shutoff valves in the gas line to the
appliance.
Do gas leak test ahead of gas control if piping has
been disturbed.
GAS LEAK TEST: Paint pipe joints with rich soap and
water solution. Bubbles indicate gas leak. Tighten
joints to stop leak. Recheck with soap and water.
Check Safety Shutoff Operation
This step applies to lockout and continuous retry
modules only.
Turn gas supply off.
Set thermostat or controller above room
temperature to call for heat.
Watch for spark at pilot burner either immediately
or following pre-purge. See device label.
Open manual gas cock and make sure no gas is
flowing to pilot or main burner.
O
PERATION__
Module operation can be divided into two phases for
the S8600. The phases are
y
Trial for ignition
y
Main burner operation
TRIAL FOR IGNITION
Pilot Ignition
On the call for heat, the module energizes the first
main valve operator. The first main valve opens, which
allows gas to flow to the pilot burner. At the same time,
the electronic spark generator in the module produces
an over 10k volt spark pulse output. The voltage
generates a spark at the igniter or igniter-sensor that
lights the pilot.
If the pilot does not light, or the pilot flame current is
not at least 1.0 A and steady, the module will not
energize the second valve and the main burner will not
light.
MAIN BURNER OPERATION
When the pilot flame is established, a flame
rectification circuit is completed between the sensor
and burner ground. The flame sensing circuit in the
module detects the flame current, shuts off the spark
generator and energizes the second main valve
operator. The second main valve opens and gas flows
to the main burner, where it is ignited by the pilot burner.
On lockout models, the flame current also holds the
safety lockout timer in the reset operating condition.
When the call for heat ends, both valve operators are
de-energized, and both valves in the gas control close.
Safety Lockout
These modules provide 100 percent
shutoff and safety lockout. A timer in these
models starts timing the moment the trial
for ignition starts. Ignition spark continues
only until the timed trial for ignition period
ends. Then the module goes into safety
lockout. Lockout de-energizes the first
main valve operator and closes the first
valve in the gas control, stopping pilot gas
flow. The control system must be reset by
setting the thermostat below room
temperature for one minute or by turning
off power to the module for one minute.
f i r e - p a r t s . c o m
