Empire FAW40IPXLP-1, Installation Instructions And Owner'S Manual

37134-4-0319

Page 11

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 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.

Standing Pilot Model

Servicing the Pilot and Main Burners, Pilot orifice, Thermo

-

couple, and Main Burner orifices: 

Disconnect the gas supply at 

the inlet to the control valve. Then remove the burner door to gain 

access to the above listed components.

If Electrode Does Not Produce Spark:

1.  check wire connections.

2.  check gap for pilot burner to the electrode tip. Should be between 

1/8" (3mm) and 3/16" (5mm). Electrode wire and tip must be 

more than 1/4" (6mm) away from all other metal components.

If Pilot Does Not light By Any Means:

1.  check valve knob for being in the "Pilot" position.

2.  check pilot adjustment for being full open (counterclockwise 

to open).

3.  If gas is available in the supply tubing, the pilot orifice and/or 

pilot burner is probably restricted by a spider web. Clean pilot 

assembly and relight.

If Pilot Does Not remain on After releasing Knob: 

1.  Follow instructions and hold button down longer and harder.

2.  Determine if pilot flame extends past thermocouple; if not, adjust 

input or clean pilot burner.

3.  Replace thermocouple if millivolts read less than 15 millivolts. 

Main Gas Valve Does not open When Gas Control Is Turned To on:

1.  check for 24 volts to valve by removing one wire and touching 

to the 

SAME TErMINAl 

it was on. Terminal should have a 

light spark. 

Do NoT SHorT AcroSS TErMINAlS, AS IT 

WIll BurN ouT THE GAS coNTrol.

2.  To check for line voltage to furnace, remove front panel and 

short across two-terminal fan control to allow fan to operate 

(Figure 14).

cAuTIoN:

 Label all wires prior to disconnection when servicing 

controls. Wiring errors can cause improper and dangerous 

operation. Verify proper operation after servicing.

IP-Model Pilot

This heater is using a Honeywell "Smart Valve" system for intermittent 

pilot ignition.
On a call for heat by the control turns on a 24 volt mini hot surface 

ignitor which lights a pilot that in turn lights the main burner. The gas 

valve used in this system is a step opening which opens at a lower 

pressure for ignition and then steps to a full inlet pressure of 4" H

2

O 

pressure on Natural Gas and 10" h

2

0 pressure on Propane Gas.

Pilot Flame Adjustment

The pilot flame should envelop 3/8 to 1/2 inch (10 to 13mm) of the 

tip of the flame rod. See Figure 10.
To adjust:

1.  Remove the pilot adjustment cover screw.

2.  Turn the inner adjustment screw clockwise 

to decrease 

or counterclockwise 

to increase pilot flame. Pilot ad-

justment is shipped at full flow rate. Turn the inner adjustment 

screw clockwise

 if the inlet pressure is too high.

3. Replace the cover screw after the adjustment to prevent gas 

leakage.

ON

OFF

IGNITOR

CONTROL

INLET PRESSURE TAP

OUTLET PRESSURE TAP

PILOT ADJUSTMENT-
UNDER CAP SCREW

PILOT OUTLET

PRESSURE REGULATOR
ADJUSTMENT-UNDER CAP
SCREW

GAS FLOW

IGNITOR

CONTROL

TO 24 V. THERMOSTAT

TO 24 V. COMMON ON TRANSFORMER

TO 24 V."HOT" ON TRANSFORMER

WIRING

I P-MODEL GAS VALVE AND WIRING

IGNITOR-PILOT ASSY.

FAN
SWITCH

MOTOR

HONEYWELL IP
SMART VALVE

120 VAC

LIMIT
CONTROL

VENT SAFETY
LIMIT

THERMOSTAT

40 VA TRANSFORMER

24 VAC

120VAC

VALVE CONTROL
CONNECTOR

L1 "HOT"

L2 NEUTRAL

LADDER WIRING DIAGRAM-IP VALVE

Figure 15