Honeywell R7861 Thermostat User Manual

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R7824, R7847, R7848, R7849,R7851,R7861,

R7886 Amplifiers for

800 SERIES Relay Modules

PRODUCT DATA

The R7851C Dynamic Self-Check Optical Flame Amplifier is a

solid state plug-in amplifier that responds to ultraviolet signals

from C7961E Dynamic Shutter-Check ultraviolet flame detectors

to indicate the presence of flame when used with 7800 SERIES

Relay Modules.

The R7861A Self-Check Ultraviolet Flame Amplifier is a solid

state plug-in amplifier that responds to an ultraviolet signal from a

C7061 Self-Check Ultraviolet Flame Detector to indicate the

presence of flame when used with 7800 SERIES Relay Modules.

The R7886A Dynamic Self-Check Ultraviolet Amplifier is a solid

state plug-in amplifier that responds to a pulsed direct current

signal from a C7076A,C Ultraviolet Flame Detector with

adjustable sensitivity to indicate the presence of flame when used

with 7800 SERIES Relay Modules.

FEATURES

•

Flame failure response time of 0.8 or 1 second; or 2.0 or

3.0 seconds, depending on the amplifier and relay module

selected. See Table 1.

•

Plug-in to 7800 SERIES Relay Module through printed

circuit board edge connector keyed for proper orientation.

Flame signal test jacks measure amplifier flame signal

voltage.

APPLICATION

The R7824C Rectification Flame Amplifier is a solid state plug-in

amplifier that responds to a rectified signal from a C7024E,F Self-

Check Ultraviolet Flame Detector to indicate the presence of

flame when used with an RM7824 Relay Module.

•

0.0 to 5.0 Vdc Flame signal strength reading range.

Color coded label identifies flame detection type:

—

Green—rectification. Red—infrared.

Purple—ultraviolet. Blue—pulsed rectification.

White—optical.

The R7847A,B Rectification Flame Amplifiers are solid state plug-

in amplifiers that respond to a rectified signal from a rectification

type flame detector to indicate the presence of flame when used

with 7800 SERIES Relay Modules.

•

R7847B, R7848B, R7849B Dynamic Ampli-Check®

circuitry tests all flame amplifier components 12 times per

minute. The 7800 SERIES Relay Module locks out on

safety shutdown with amplifier failure.

The R7847C Self-Check Rectification Flame Amplifier is a solid

state plug-in amplifier that responds to a rectified signal from a

C7012E,F Self-Check Ultraviolet Flame Detector to indicate the

presence of flame when used with 7800 SERIES Relay Modules.

This is not European Community (CE) approved for EC7810,

EC7820, EC/RM7830 or EC/RM7850 Relay Modules.

R7824C and R7847C Dynamic Self-Check Rectification

Amplifier, R7851C Dynamic Self-Check Optical Flame

Amplifier, R7861 Self-Check Ultraviolet Flame Amplifier

and R7886A Dynamic Self-Check Ultraviolet Amplifier test

the detectors and all electronic components in the flame

detection system 12 times per minute. The 7800 SERIES

Relay Module locks out on safety shutdown with flame

detection system failure.

The R7848A,B Infrared Flame Amplifiers are solid state plug-in

amplifiers that respond to an infrared signal from a C7015

Infrared Flame Detector to indicate the presence of flame when

used with 7800 SERIES Relay Modules.

NOTE: NOTE:R7824C, Series 2 or greater, and R7847C,

Series 4 or greater, pulse shutter when signal of

.5 Vac is sensed.

The R7849A,B Ultraviolet Flame Amplifiers are solid state plug-in

amplifiers that respond to an ultraviolet signal from a C7027,

C7035 or C7044 Ultraviolet Flame Detector to indicate the

presence of flame when used with 7800 SERIES Relay Modules.

Contents

Application ........................................................................

Features ...........................................................................

Specifications ...................................................................

Ordering Information .........................................................

Installation ........................................................................

Checkout ..........................................................................

The R7851B Optical Flame Amplifiers are solid state plug-in

amplifiers that respond to optical signals from C7927, C7935,

C7915, and C7962 Flame Detectors to indicate the presence of

flame when used with 7800 SERIES Relay Modules.

U.S. Registered Trademark

65- 0109- 8

R7824, R7847, R7848, R7849,R7851,R7861, R7886 AMPLIFIERS FOR 7800 SERIES RELAY MODULES

SPECIFICATIONS

Models:

Factory Mutual Approved: Report J.I.1V9A0.AF. (R7851C

Pending.)

Flame Detection Systems (see Table 2):

Rectification:

Industrial Risk Insurers: Acceptable

R7824C for use with C7024E,F Solid State Ultraviolet

Detectors.

Table 1. Relay Module Flame Failure

Response Time (FFRT).

R7847A for use with flame rods, rectifying photocells or

C7012A,C Solid State Ultraviolet Detectors.

R7847B for use with flame rods, rectifying photocells or

C7012A,C Solid State Ultraviolet Detectors.

R7847C for use with C7012E,F Solid State

Ultraviolet Detectors.

Flame Failure Response

Time (FFRT) in seconds

Relay Module

0.8 or 1 2.0 or 3.0

2.0

Infrared:

EC7810, EC7820, EC/RM7830, 1.0

EC/RM7850

R7848A for use with C7015 Infrared (lead sulfide) Detector.

R7848B for use with C7015 Infrared (lead sulfide) Detector.

Ultraviolet:

EC/RM7823, EC/RM7885, EC/ 0.8

RM7890, EC/RM7895, RM7896,

RM7888, RM7838, RM7800,

RM7840

3.0

R7849A for use with C7027/C7035/C7044 Minipeeper Ultravi-

olet Detectors.

R7849B for use with C7027/C7035/C7044 Minipeeper Ultravi-

olet Detectors.

R7861A for use with C7061A Ultraviolet Detector.

R7886A for use with C7076A,D Ultraviolet Detectors with

adjustable sensitivity.

RM7824

N/A

3.0

Optical:

R7851B for use with C7927, C7935, C7915 and C7962 Flame

Detectors.

–

R7851C for use with C7961E Flame Detectors.

Flame Failure Response Time: See Table 1.

FLAME AMPLIFIER

Flame Signal (Volts dc):

Minimum Acceptable: 1.25 Vdc.

Flame Signal Voltage Range (displayed on Keyboard Display

Module or measured with a 1M ohm/volt meter plugged into

amplifier test jacks): 0.0 to 5.0 Vdc.

(76)

Environmental Ratings:

Ambient Temperature:

3/8 (9)

Operating: -40°F to 140°F (-40°C to 60°C).

Storage: -40°F to 150°F (-40°C to 65°C).

Humidity: Operating 85% rh continuous, noncondensing.

Vibration: Continuous 0.5G environment.

7/8

3-9/16 (91)

(23)

M11460

Weight: 2.5 oz (71g), unpacked.

Dimensions: See Fig. 1

Fig. 1. Flame amplifier dimensions in in. (mm).

Approvals:

NOTE: .NOTE: EN298 Approved: When these amplifiers are

used with an EC7810, EC7820, EC/RM7830, or

EC/RM7850 Relay Module.

Underwriters Laboratories Inc. Listed: File no. MP268, Guide no.

MCCZZ: R7847A, R7847B, R7847C, R7861A, R7886A,

R7848A, R7848B, R7849A, R7849B, R7851B. (R7851C

Pending.)

Accessories:

Underwriters Laboratories Inc. Component Recognized: File no.

MP268, Guide no. MCCZZ: R7824C.

Flame Simulators:

Rectification: 123514A.

Canadian Standards Association Certified: LR95329-3. (R7851C

Pending.)

Ultraviolet: 203659.

Flame Detectors (ordered separately): select from Table 2.

ORDERING INFORMATION

When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the

TRADELINE® Catalog or price sheets for complete ordering number.

If you have additional questions, need further information, or would like to comment on our products or services, please write or

phone:

Your local Home and Building Control Sales Office (check white pages of your phone directory).

Home and Building Control Customer Relations

Honeywell, 1885 Douglas Drive North

Minneapolis, Minnesota 55422-4386

In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Scarborough, Ontario M1V 4Z9.

International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France,

Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.

5-0109—8

R7824, R7847, R7848, R7849,R7851,R7861, R7886 AMPLIFIERS FOR 7800 SERIES RELAY MODULES

Table 2. Flame Detection Systems.

Plug-in Flame Signal Amplifiers

Applicable Flame Detectors

Flame

Failure

Response

Type

Color Self-Checking

Model

Time (sec)

Fuel

Type

Models

C7024E,F

Rectification Green Dymanic Self-

Check

b,c, i 3

Gas, oil, Ultraviolet (Purple

coal Peeper®)

R7824C

_R₇₈₄₇_Ah

0.8/1 or 2/3 Gas

Rectifying Flame Rod C7004, C7007, C7011

Complete Assemblies:

C7008, C7009, Q179

Holders

Rectifying Photocell

Gas, oil, Ultraviolet (Purple

_R₇₈₄₇_Ah

0.8/1 or

Oil

C7003, C7010, C7013,

C7014

_R₇₈₄₇_Ah

2/3

C7012A,C.

coal

Peeper®)

Dynamic Ampli-

Check®

_R₇₈₄₇_Be_,h

0.8/1 or

2/3

Gas

Rectifying Flame Rod C7004, C7007, C7011

Complete Assemblies:

C7008, C7009, Q179

Holders

Rectifying Photocell

Dynamic Ampli-

Check®

_R₇₈₄₇_Be_,h

0.8/1 or

2/3

Oil

C7003, C7010, C7013,

C7014

Dynamic Ampli-

Check®

_R₇₈₄₇_Be_,h

_R₇₈₄₇_Cc,f, i

2/3

Gas, oil, Ultraviolet (Purple

coal Peeper®)

C7012A,C

Dynamic Self-

Check

2/3

Gas, oil, Ultraviolet (Purple

coal Peeper®)

C7012E,F

Infrared

Red

R7848A

2/3

Gas, oil, Infrared (Lead

coal Sulfide)

C7015

Dynamic Ampli-

Check®

_R₇₈₄₈_Be

Gas, oil, Infrared (Lead

coal Sulfide)

C7015

Ultraviolet Purple No

R7849A

0.8/1 or

Gas, oil Ultraviolet

(Minipeeper)

_C₇₀₂₇_,_C₇₀₃₅_,_C₇₀₄₄g

Dynamic Ampli-

Check®

_R₇₈₄₉_Bd

_R₇₈₆₁_Ac,f

_R₇₈₈₆_Ac,f

0.8/1 or

2/3

Gas, oil Ultraviolet

(Minipeeper)

Dynamic Self-

Check

0.8/1 or

2/3

Gas, oil, Ultraviolet

coal

C7061

Blue

Dynamic Self-

Check

2/3

Gas, oil, Ultraviolet (Adjustable C7076

coal Sensitivity)

Optical

White Dymanic Ampli- R7851B

Check®

0.8/1 or 2/3 Gas, oil, Optical (UV, IR,

coal Visible Light)

C7927, C7935, C7915,

C7962

Dynamic Self-

Check

_R₇₈₅₁_Cc

2/3

Gas, oil, Optical (UV only)

coal

C7961

Flame Failure Response Time (FFRT) depends on selection of amplifier and 7800 SERIES Relay Module.

R7824C is used only with the 24 Vdc RM7824 Relay Module and C7024E,F Flame Detectors.

Circuitry tests all electronic components in flame detection system (amplifier and detector) 12 times a minute during burner operation

and shuts down burner if detection system fails.

Use only Honeywell part no. 38316 Photocell.

Circuitry tests flame signal amplifier 12 times a minute during burner operation and shuts down burner if amplifier fails.

00/220/240 Vac applications require a 120 Vac, 10 VA minimum stepdown transformer (not provided) to drive the shutter. Applies to

R7847C series 3 or greater; R7886A series 2 or greater; R7861 series 1 or greater. Fig. 2 shows flame detector wiring.

Use C7027, C7035 and C7044 Flame Detectors only on burners that cycle on-off at least once every twenty-four hours. Use C7012E,F

Flame Detector with R7847C Amplifier, C7061A Ultraviolet Detector with R7861A Amplifier or C7076A Flame Detector with R7886A

Amplifier as ultraviolet flame detection system for appliances with burners that remain on continuously for twenty-four hours or longer.

R7847A,B Amplifiers with 0.8/1 second FFRT should not be used with C7012A,C Solid State Ultraviolet Detectors.

R7824C Series 2 and greater and R7847C Series 4 and greater check flame detector system when flame reaches 1.5 Vdc or at 4.5

seconds, whichever occurs first.

Order flame rod separately; see flame detector Instructions for holder.

65-0109—8

R7824, R7847, R7848, R7849,R7851,R7861, R7886 AMPLIFIERS FOR 7800 SERIES RELAY MODULES

Align the amplifier circuit board edge connector with the

keyed receptacle on the 7800 SERIES Relay Module.

Be sure the amplifier nameplate faces away from the

Relay Module.

CAUTION

Equipment Damage Hazard.

Incorrect combination of relay module, amplifier

and flame detector can cause equipment damage.

In infrared applications (C7015 Infrared Flame

Detector and R7848 Amplifier) using the RM7890

Relay Module with software version 4004 or less

requires a ten-second delay to start sequence. This

applies only to the initial power of the RM7890.

Push in the amplifier until the circuit board is fully

inserted into the receptacle and then push the amplifier

toward the 7800 SERIES Relay Module retaining clasp.

Be sure the amplifier is firmly in place.

Perform all required checkout tests.

Installing Flame Detector

INSTALLATION

NOTE: NOTE:Table 2 lists flame detection systems available

for use with 7800 SERIES Relay Modules. Be sure to

use the correct combination of amplifier and flame

detector.

When Installing this Product...

Read these instructions carefully. Failure to follow them

could damage the product or cause a hazardous

condition.

Check the ratings given in the instructions and on the

product to make sure the product is suitable for your

application.

Installer must be a trained, experienced, flame

safeguard control technician.

After installation is complete, check out the product

operation as provided in these instructions.

Proper flame detector installation is the basis of a safe and

reliable flame safeguard installation. Refer to the Instructions

packed with the flame detector and the equipment manufac-

turer instructions.

Keep the flame signal leadwires as short as possible from the

flame detector to the wiring subbase. Capacitance increases

with leadwire length, reducing the signal strength. The

maximum permissible leadwire length depends on the type of

flame detector, leadwire and conduit. However, the ultimate

limiting factor for the flame detector leadwire is the flame

signal; see Table 3 in the Checkout section.

WARNING

Electric Shock Hazard.

Can cause electrical shock, serious injury or

death.

Disconnect the power supply before beginning

installation. More than one power supply

disconnection can be involved.

IMPORTANT

. Wiring must comply with all applicable codes,

ordinances and regulations

. Wiring (where required) must comply with NEC

Class 1 (Line Voltage) wiring.

. Perform all required checkout tests after installation

is complete.

CAUTION

Equipment Damage Hazard.

Can cause equipment damage.

Disconnect 7800 SERIES Relay Module power before

removing amplifier.

Fig. 2. Installing flame signal amplifier.

Wiring

Installing Plug-In Flame

Signal Amplifier (Fig. 2)

WARNING

Electrical Shock Hazard.

Can cause electrical shock or equipment damage.

Disconnect power supply before beginning installation.

More than one disconnection can be involved.

WARNING

Can cause electrical shock, serious injury or

death.

Disconnect the power supply before beginning

installation. More than one power supply

disconnection can be involved.

Electric Shock Hazard.

1. Remove the 7800 SERIES Relay Module from the

wiring subbase.

2. Refer to Fig. 3 for proper flame detector wiring.

5-0109—8

R7824, R7847, R7848, R7849,R7851,R7861, R7886 AMPLIFIERS FOR 7800 SERIES RELAY MODULES

PHOTOCELL

FLAME ROD

C7076A,D ULTRAVIOLET DETECTOR

X F

X G

X F

REMOTE

SENSOR

X G

EARTH

GROUND

INFRARED (C7015)

SHUTTER

C7076A

C7076D

TERMINAL

BLOCK

WHITE

BROWN

L1 (HOT)

ULTRAVIOLET (C7027/C7035/C7044)

L2 (COMMON)

BLUE

7800 SERIES

WHITE

OPTICAL C7927A

BLUE

SOLID STATE SELF-CHECKING

ULTRAVIOLET (C7012E,F)

WHITE

SOLID STATE

ULTRAVIOLET (C7012A,C, C7961E) ₄

BLUE

YELLOW

WHITE

BLACK

BLUE

YELLOW

BLACK

L2 BLACK

GND GREEN

SOLID STATE SELF-CHECKING

ULTRAVIOLET (C7024E,F – E SHOWN)

SOLID STATE SELF-CHECKING

ULTRAVIOLET (C7061A)

BLUE

YELLOW

WHITE

YELLOW

L2 WHITE

RED

L2 BLACK

WHITE

CAUTION: EQUIPMENT DAMAGE HAZARD. INCORRECT WIRING POLARITY CAN DAMAGE OR DESTROY UV SENSING TUBES.

CONNECT FLAME DETECTOR WIRES ACCORDING TO FOOTNOTES 1 AND 2 TO PREVENT UV SENSING TUBE DAMAGE.FLAME DETECTOR

LEADS ARE COLOR CODED. THE BLUE LEAD MUST BE CONNECTED TO THE F TERMINAL AND THE WHITE MUST BE CONNECTED TO

THE G TERMINAL. THE UV SENSING TUBE IS POLARITY SENSITIVE.

FLAME DETECTOR LEADS ARE COLOR CODED. THE BLUE LEAD MUST BE CONNECTED TO THE F TERMINAL AND THE YELLOW MUST

BE CONNECTED TO THE G TERMINAL. THE UV SENSING TUBE IS POLARITY SENSITIVE.

CAUTION: EQUIPMENT DAMAGE HAZARD. INCORRECT VOLTAGE CAN DAMAGE SHUTTER MECHANISM ONLY ON EC7800 SERIES

RELAY MODULES. INSTALL A 200/220/240 VAC TO 120 VAC, 10VA MINIMUM, STEPDOWN TRANSFORMER (NOT PROVIDED) TO DRIVE

THE SHUTTER MECHANISM.

DO NOT USE 0.8/1 SECOND FFRT AMPLIFIER WITH C7012A,C FLAME DETECTOR.

GND (GREEN) LEAD WIRE ON C7961E ONLY.

M20309

Fig. 3. Flame detector wiring.

65-0109—8

R7824, R7847, R7848, R7849,R7851,R7861, R7886 AMPLIFIERS FOR 7800 SERIES RELAY MODULES

Disconnect power supply before making wiring

connections to prevent electrical shock and equipment

damage.

All wiring must comply with appropriate electrical codes,

ordinances and regulations including NEC Class 1 (Line

Voltage) wiring where required.

Use recommended wire size and type no. 18 copper

conductors TTW(60C) or THW (75C) or THNN(90C).

Use recommended wire routing:

a. Keep the flame signal leadwire as short as possible

from the detector to the 7800 SERIES Relay Module.

The maximum permissible leadwire length depends

on the type of leadwire, conduit type and leadwire

diameter. The ultimate limiting factor for flame signal

leadwire length is the flame signal voltage.

CAUTION

Equipment Damage Hazard.

Improper wiring can destroy ultraviolet sensing

tube.

Carefully follow polarity sensitive wiring instructions for

the C7027, C7035, C7044, C7012, C7024, C7061,

C7961 and C7076. Reversing the leadwires, even

momentarily, can destroy the ultraviolet sensing tube.

POSITIVE (+)

METER LEAD

NEGATIVE (-)

METER LEAD

ONE

MEGOHM/VOLT

METER

b. Do not run high voltage ignition transformer wires in

the same conduit with the flame detection wiring.

c. If the flame detector leadwires are not long enough

to reach the 7800 SERIES Relay Module electrical

connectors, make splices in a junction box.

FLAME SIMULATOR

TEST JACK

(

1) Enclose scanner wiring without armor cable in

metal cable or conduit.

(

2) Follow flame detector Instructions.

Check wiring, see Fig. 4.

Install 7800 SERIES Relay Module.

Restore power to the 7800 SERIES Relay Module.

Flame detector wiring is shown in Fig. 3.

CHECKOUT

M11459A

Fig. 4. Flame signal measurement with meter.

Preliminary Inspection

Make certain that:

1. Connect blue leadwire from detector to terminal F and

white leadwire from C7027/C7035/C7044/C7061 to

terminal G.

2. Connect blue leadwire from detector to terminal F and

yellow leadwire from C7012/C7024/C7961 to terminal

3. Follow lightoff Instructions for applicable 7800 SERIES

Relay Module.

Wiring connections are correct and all terminal screws

and electrical connections are tight.

Proper flame failure response time is selected.

Amplifier is securely mounted on the 7800 SERIES

Relay Module.

Detectors are properly positioned and cleaned

according to Detector Instructions.

Correct combination of amplifier and flame detector is

used.

Measuring Flame Signal With Keyboard

Display Module

Flame Signal Measurement (Fig. 4)

Consult Instructions for applicable 7800 SERIES Relay

Module or Keyboard Display Module.

Flame signal can be measured at the Flame Signal Test

Jacks, see Fig. 4, and at the Keyboard Display Module.

Measure the flame signal at the appropriate times defined in

the Checkout section; see applicable 7800 SERIES Relay

Module Instructions. See Table 3 for acceptable and

maximum flame signal voltage strengths.

Measuring Flame Signal with a Volt

Ohmmeter

Two test jacks, positive and negative (Com) are accessible on

the top of the amplifier when plugged into the 7800 SERIES

Relay Module. These jacks are provided for monitoring flame

signal strength. Use a one megohm/volt meter to measure the

flame signal strength. Connect the positive meter lead (red) to

the positive (+) amplifier test jack and the negative meter lead

(

black) to the negative (-) amplifier test jack. The test jacks

use standard 0.180 inch diameter voltmeter probes. A

minimum 1.25 Vdc flame signal is required.

5-0109—8

Table 3. Flame signal.

Minimum Acceptable

Flame Detector

Flame Signal Amplifier

Steady dc Voltage

Maximum Expected dc Voltage

Flame Rod Photocell

_R₇₈₄₇_A_,_Bb

1.25 Vdc

5.0 Vdc at Keyboard Display Module

or on volt-ohmmeter.

_C₇₀₁₂_A_,_Cc

C7012E,F^c

C7015A

R7847C^d^,^e

_R₇₈₄₈_A_,_Bb

C7024E,F

_R₇₈₂₄_Cd,e

_R₇₈₄₉_A_,_Bb

C7027A

C7035A

C7044A

C7927

C7935

C7915

C7962

_R₇₈₅₁_Bb

C7061A

C7076A,D

C7961E

_R₇₈₆₁_Ad

_R₇₈₈₆_Ad

_R₇₈₅₁_Cd

This minimum or stronger signal can be easily obtained if the detector is correctly installed and positioned to properly sense the

flame. Obtain this voltage before completing checkout.

The flame amplifiers are Ampli-Check® type.

Adjust slightly, or face the pipe down, or extend the sight pipe on C7012A,C,E,F applications to obtain a maximum flame signal

reading less than 5.0 volts.

The flame signal amplifier circuitry is tested one-half second every five seconds during burner operation and shuts down the

burner if the amplifier fails (all installations).

R7824C, Series 2 or greater, and R7847C, Series 4 or greater, pulse the shutter when the flame signal reaches 1.5 Vdc.

The flame signal for the pilot alone, the main burner flame

alone, and both together must be steady and a minimum of

1.25V. If the flame signal is unsteady, or less than the

5. With the burner running, check the temperature at the

detector. If it exceeds the detector maximum rated

temperature:

minimum acceptable voltage, check the flame detector

installation and circuitry in the following procedure.

a. Add a heat block to stop conducted heat traveling

up the sight pipe.

b. Add a shield or screen to reflect radiated heat.

c. Add cooling (refer to sight pipe ventilation in the

detector Instructions).

Check the supply voltages at terminals (L1) and L2 (N).

Make sure the master switch is closed, connections are

correct, and the power supply is of the correct voltage

and frequency and is sinusoidal.

6. Make sure that the flame adjustment is not too lean.

7. Make sure the optical detector is properly sighting the

flame.

8. If necessary, resight or reposition the detector.

9. If you cannot obtain proper operation, replace the

plug-in amplifier.

10. If you cannot yet obtain proper operation, replace the

flame detector.

Check the detector wiring for defects including:

a. Incorrect connections.

b. Wrong type of wire.

c. Deteriorated wire.

d. Open circuits.

e. Short circuits.

f. Leakage paths caused by moisture, soot or accu-

mulated dirt.

IMPORTANT

For a flame rod, make sure:

a. There is enough ground area.

If you make any changes to the flame detection

system, repeat all required Checkout tests in

Checkout section of the Instructions for the

applicable 7800 SERIES Relay Module.

b. The flame rod is properly located in the flame.

c. Temperature at the flame rod insulator is no greater

than 500¡F (260¡C).

For all optical detectors, clean the detector viewing win-

dow, lens, and inside of the sight pipe as applicable.

65-0109—8

Automation and Control Solutions

Honeywell International

Control Products

Honeywell Building

17 Changi Business Park Central 1

Singapore 486073

Honeywell Europe S.A.

3 Avenue du Bourget

1140 Brussels

Honeywell Latin American

Region

480 Sawgrass Corporate Parkway

Suite 200

Sunrise FL 33325

Honeywell

985 Douglas Drive North

Golden Valley, MN 55422

Honeywell Limited-Honeywell Limitée

35 Dynamic Drive

Scarborough, Ontario

M1V 4Z9

Belgium

Printed in U.S.A. on recycled

paper containing at least 10%

post-consumer paper fibers.

5-0109—8 G.R. Rev. 01-02