Service and Maintenance Suggestions

CALL SERVICEMAN

GENERAL: All furnaces have been ﬁre-tested to check for proper operation. This includes, main burner ﬂame, pilot ﬂame, fan operation, fan control, limit control and automatic valve operation. If the furnace fails to function on initial installation, it is advisable to re-check the following:

1.115 volts to the junction box.

2.Inlet gas pressure.

3.The 24 volt system.

4.Type of gas being used and that shown on the rating label.

The Service Department at Empire Comfort Systems, Inc. may be contacted to assist in servicing furnace.

Servicing the Pilot and Main Burners, Pilot Oriﬁce, and Main Burner Oriﬁces: Disconnect the gas supply at the inlet to the control valve. Then remove the burner door to which the above components are attached.

Servicing The Fan Motor: The upper front panel, the shroud surrounding the fan blade and fan blade must be removed. See “Oiling the Motor” paragraph on page 7.

S 8 6 0 0 H I N T E R M I T T E N T I G N I T I O N M O D U L E SPECIFICATIONS

Lockout timing is 90 seconds. Ignition timing is until pilot lights or lockout occurs.

Module shuts down and cuts power to gas control on ﬂame failure. Gas control closes to provide 100 percent lockout on ﬂame failure. Manual reset required.

ELECTRICAL RATINGS:

Voltage and frequency: 20.5 to 28.5V (24V nom.) 60 Hz.

Current rating: 0.2 A.

Valve contact ratings (at 24 Vac):

	Run	Inrush
Pilot	1.0 A	10.0 A
Main	1.0 A	10.0 A

SPARK GENERATOR OUTPUT: 13kV peak at 25 pf load.

THERMOSTAT ANTICIPATOR SETTING: 0.2 A plus pilot valve rating plus main valve rating.

THERMOSTATCOMPATIBILITY: Standard models compatible with all open-close switch type 24 Vac thermostats capable of supplying rated voltage and current to the module.

AMBIENT TEMPERATURE RATING: Minus 40 F to plus 175 F (minus 40 C to plus 79 C).

RELATIVE HUMIDITY RATING: 5 to 90 percent RH at 95 F.

FLAME FAILURE RESPONSE TIME: 0.8 seconds at 1.0 uA ﬂame current.

FLAME CURRENT: 1 uA, min.

CHECKOUT

Check out the gas control system:

1.At initial installation of the appliance.

2.As part of regular maintenance procedures.

3.As the ﬁrst step in troubleshooting.

4.Any time work is done on the system.

STEP 1: Perform Visual Inspection.

A.With power off, make sure all wiring connections are clean and tight.

B.Turn on power to appliance and ignition module.

C.Open manual shutoff valves in the gas line to the appliance.

D.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.

STEP 2: Review Normal Operating Sequence and Module

Speciﬁcations.

STEP 3: Reset the Module.

A.Turn the thermostat to its lowest setting.

B.Wait one minute.

As you do Steps 4 and 5, watch for points where operation deviates from normal. Refer to Troubleshooting Chart to correct problem.

STEP 4: Check Safety Lockout Operation.

A.Turn gas supply off.

B.Set thermostat above room temperature to call for heat.

C.Watch for spark at pilot burner.

D.Time length of spark operation. Maximum spark time is 90 seconds.

E.Open manual gas cock and make sure no gas is ﬂowing to pilot or main burner.

F.Set thermostat below room temperature and wait one minute before continuing.

STEP 5: Check Normal Operation.

A.Set thermostat above room temperature to call for heat.

B.Make sure pilot lights smoothly when gas reaches the pilot burner.

C.Make sure main burner lights smoothly without ﬂashback. Make sure burner operates smoothly without ﬂoating or lifting.

D.If gas line has been disturbed, complete gas leak test.

GAS LEAK TEST: Paint gas control gasket edges and all pipe connections downstream of gas control, including pilot tubing connections, with rich soap and water solution. Bubbles indicate gas leaks. Tighten joints and screws or replace component to stop gas leak.

E.Turn thermostat below room temperature. Make sure main burner and pilot ﬂames go out.

OPERATION

Module operation can be conveniently divided into two phases for S8600H. The phases are trial for ignition and main burner operation.

TRIAL FOR IGNITION

Pilot Ignition

Following call for heat (system start on S8600H), 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 a 13,000 volt spark pulse output (at 25 pf load). The voltage generates a spark at the igniter-sensor that lights the pilot.

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FAW-55IP specifications

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