Install Instructions

Q3450, Q3453 AND Q3480 SMARTVALVE™ SYSTEM PILOT BURNERS
3 69-0708—3
SERVICE
WARNING
Fire or Explosion Hazard.
Can cause severe injury, death or property
damage.
Perform Gas Leak Test anytime work is done to
the system.
Pilot Outage
1. If pilot flame goes out during ignition, but is
properly adjusted, recheck mounting and location
instructions in Location section.
2. If all mounting and location instructions are
followed but pilot continues to go out, construct a
shield to protect pilot flame from main burner
ignition, extinction and drafts. See Fig. 5.
Fig. 5. Proper shielding of pilot flame.
3. Check pilot and main burner lightoff.
a. Set the thermostat to call for heat.
b. Watch the pilot burner during the ignition
sequence to determine if:
(1) Igniter continues to glow red after the pilot
is lit.
(2) The pilot lights and the igniter stops glowing
red, but main burner does not light.
c. If pilot burner is functioning correctly, ensure
adequate flame current as follows:
(1) Turn off furnace at circuit breaker or fuse
box.
(2) Clean the flame rod with emery cloth.
(3) Make sure electrical connections are clean
and tight.
(4) Check for cracked ceramic insulator, which
can cause short to ground, and replace
igniter-flame rod assembly if necessary.
(5) Turn on power and set thermostat to call for
heat. The pilot should light and then the
main burner should light.
Replace Igniter-Flame Rod Assembly
1. Turn off furnace at circuit breaker or fuse box.
2. Remove spring clip, then igniter-flame rod
assembly from the pilot burner.
3. Disconnect the igniter-flame rod assembly keyed
plug from the igniter connection on the
SV94/SV95/SV96/SV98XX.
4. Remove the igniter-flame rod assembly from the
furnace.
5. Install replacement igniter-flame rod assembly in
the pilot burner and secure with spring clip.
6. Connect igniter-flame rod assembly keyed plug to
igniter connection on the SV94/SV95/SV96/
SV98XX.
7. Turn on power and set thermostat to call for heat.
The pilot should light and then the main burner
should light.
Check Ignition Cable
1. Make sure that ignition cable is not in contact with
metal surfaces.
2. Make sure that ignition cable is not more than 3 ft
(1m) long.
3. Check electrical continuity of ignition cable.
Check Grounding
1. If ground is poor or erratic, safety shutdown will
occur. Therefore, if frequent shutdowns are
reported, check that ground is made through the
pilot tubing.
2. Excessive temperature at the ceramic flame rod
insulator will permit electrical leakage to ground.
Check for the following:
(a) If bracket is bent, bend it back to correct
position.
(b) If insulator is cracked, replace igniter-
flame rod assembly (Q3400A or Q3405
for SV9580/SV9581 System).
TYPICAL
SHIELD
M2686
69-0708-3.fm Page 3 Monday, May 10, 2004 9:11 AM