Honeywell Q340A Manuel utilisateur

® U.S. Registered Trademark

INSTALLATION INSTRUCTIONS

95-6794-1

Q340A

Thermocouple

APPLICATION

The Q340A Thermocouple is a single-junction

thermocouple lead which provides a 30 mV electrical

signal when the pilot is operating. Loss of the pilot

removes the electrical current and shuts off the gas

supply to the burner.

SPECIFICATIONS

Temperature Ratings:

Hot Junction area: 1400°F (760°C).

Cold Junction Area: 780°F (416°C).

Lead Lengths:

18 in. (0.5 m) to 48 in. (1.2 m) are available.

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 given in the instructions and on

the product to make sure the product is suitable for

your application.

3. Installer must be a trained, experienced technician.

4. After installation is complete, check out product

operation as provided in these instructions.

WARNING

Fire or Explosion Hazard.

Can cause property damage, serious

injury or death.

Make sure the gas supply to the burner is turned

off before removing or installing the

thermocouple.

Replacement Installation

1. Disconnect and remove the old thermocouple.

2. Determine the type of thermocouple mount:

a. Screw-in type.

b. Clamp type.

c. Push-in type.

3. Follow the applicable installation instructions in

Fig. 1.

Fig. 1. Q340 Thermocouple installation.

SCREW-IN TYPE CLAMP TYPE PUSH-IN TYPE

Insert

thermocouple

in pilot

burner

Tighten nut

Slip nut

off adapter

and clamp

thermocouple

in pilot burner

with shoulder

above clamp,

as shown

Remove

adapter,

insert

thermocouple

in pilot

burner

M629

95-6794—1 G.R. Rev. 4-01 www.honeywell.com

Q340A THERMOCOUPLE

Printed in U.S.A. on recycled

paper containing at least 10%

post-consumer paper fibers.

Home and Building Control Home and Building Control

Honeywell Honeywell Limited-Honeywell Limitée

1985 Douglas Drive North 35 Dynamic Drive

Golden Valley, MN 55422 Scarborough, Ontario

M1V 4Z9

Completing the Connection

1. Connect the other end of the thermocouple to the

safety control. Do not use thread compound; the

connection must be clean and dry.

CAUTION

Equipment Damage Hazard.

Too much torque will damage the connection.

Tighten connector only 1/4 in. turn beyond

finger-tight for good electrical continuity. Further

tightening can result in damage.

2. Make sure to tighten all connection screws

securely.

3. Connect the limit control wires to the thermocouple

junction block terminals. If no limit control is used,

jumper the terminals on the junction block with

heavy gauge wire.

4. Turn on the gas supply and light the pilot light.

5. Wait one minute and turn on the main burner.

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