Honeywell Q3400A Installation Manual

69-0751-06

Q3400A Igniter-Flame Rod Assembly

WARNING

INSTALLATION INSTRUCTIONS

APPLICATION

The Q3400A Igniter-Flame Rod Assembly replaces the
original igniter-flame rod assembly in the Q3450 and Q3480
Pilot Hardware used in the SmartValve™ System. The Q3400A
has a unique keyed plug connector that will only fit the
SV9501/SV9601, SV9502/SV9602, SV9540/SV9640, and
SV9541/SV9641 Systems. This assembly can be replaced
without removing the pilot burner, see Fig. 1.

TEMPERATURE RATING:

Flame Rod Tip: 1800° F [982° C].
Igniter Insulator: 905° F [485° C].
Flame Rod Insulator: 1250° F [677° C].
Flame Rod Lead: 500° F [260° C].

INSTALLATION

When Installing this Product…

1. Read these instructions carefully. Failure to follow
them could damage the product or cause a hazardous
condition.

2. Check the ratings and description given in the instruc­tions to make sure the product is suitable for your
application.

3. Installer must be a trained, experienced service techni­cian.

4. After installation is complete, check out product opera­tion as provided in these instructions.

Remove old Assembly

1. Turn off power at circuit breaker or fuse box.

2. Hold the bottom of the assembly with one hand. With

the other hand, remove spring clip by pulling it away
from the pilot burner. See Fig. 1.

3. Remove the assembly from the pilot burner.

4. Disconnect the leadwires from the ignition system con-

trol module.

5. Discard the old assembly and spring clip.

Q3400A

MAKE SURE SPRING CLIP
IS FULLY OVER BOTH PILOT
BURNER AND IGNITER­FLAME ROD BRACKETS.

PILOT
BURNER

SPRING
CLIP

TARGET

IGNITER

IGNITER­FLAME
ROD
ASSEMBLY

KEYED
SLOT

FLAME
ROD

Fire or explosion hazard can cause property damage,
severe injury, or death.

Follow these warnings exactly:

1. Disconnect power supply before removing any

2. To avoid dangerous accumulation of fuel gas, turn

connectors to prevent electrical shock or
equipment damage.

off gas supply at appliance service valve before
starting igniter-flame rod assembly removal.

M9042A

Fig. 1. Replace Q3400A Igniter-Flame Rod Assembly in keyed

slot of pilot burner bracket.

IMPORTANT

Make sure the assembly is oriented in the proper
direction for installation into the pilot burner.

Q3400A IGNITER-FLAME ROD ASSEMBLY

Mount Replacement Assembly

1. Insert assembly in the pilot burner until assembly is
flush with pilot burner bracket. Secure with new spring
clip provided. See Fig. 1.

2. Connect the igniter-flame rod assembly keyed plug to
Igniter connector on the ignition system control.

STARTUP AND CHECKOUT

1. Set thermostat to call for heat.

2. Watch the pilot burner during the ignition sequence.

See if:
a. Igniter glows red and pilot lights.
b. Igniter ceases to glow red after the pilot is lit.
c. Main burner lights.

3. If the ignition sequence is not as described, trouble­shoot the system by following the procedures outlined
by the equipment instructions or by the appropriate
SmartValve™ System Installation Instructions.

Resideo Technologies, Inc.
1985 Douglas Drive North, Golden Valley, MN 55422

www.resideo.com

© 2020 Resideo Technologies, Inc. All rights reserved.
This product is manufactured by Resideo Technologies, Inc. and its affili ates.

1-800-468-1502
69-0751—06 M.S. Rev. 06-20 | Printed in United States