Honeywell Thermostat R7847 Users Manual 65 0109 R7824, R7847, R7848, R7849,R7851,R7861, R7886 Amplifiers Fir 7800 SERIES Relay Es

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R7824, R7847, R7848, R7849,R7851,R7861,
R7886 Amplifiers for
7800 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
•
•

APPLICATION
The R7824C Rectification Flame Amplifier is a solid state plug-in
amplifier that responds to a rectified signal from a C7024E,F SelfCheck Ultraviolet Flame Detector to indicate the presence of
flame when used with an RM7824 Relay Module.
The R7847A,B Rectification Flame Amplifiers are solid state plugin 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.
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.
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.
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.
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
Copyright © 2002 Honeywell • All Rights Reserved

•
•
•

•

•

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.
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.
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.
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.

NOTE:

NOTE:R7824C, Series 2 or greater, and R7847C,
Series 4 or greater, pulse shutter when signal of
1.5 Vac is sensed.

Contents

Application ........................................................................
Features ...........................................................................
Specifications ...................................................................
Ordering Information .........................................................
Installation ........................................................................
Checkout ..........................................................................

1
1
2
2
4
6

65-0109- 8

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

SPECIFICATIONS
Models:
Flame Detection Systems (see Table 2):
Rectification:
R7824C for use with C7024E,F Solid State Ultraviolet
Detectors.
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.
Infrared:
R7848A for use with C7015 Infrared (lead sulfide) Detector.
R7848B for use with C7015 Infrared (lead sulfide) Detector.
Ultraviolet:
R7849A for use with C7027/C7035/C7044 Minipeeper Ultraviolet Detectors.
R7849B for use with C7027/C7035/C7044 Minipeeper Ultraviolet Detectors.
R7861A for use with C7061A Ultraviolet Detector.
R7886A for use with C7076A,D Ultraviolet Detectors with
adjustable sensitivity.
Optical:
R7851B for use with C7927, C7935, C7915 and C7962 Flame
Detectors.
R7851C for use with C7961E Flame Detectors.

Factory Mutual Approved: Report J.I.1V9A0.AF. (R7851C
Pending.)
Industrial Risk Insurers: Acceptable

Table 1. Relay Module Flame Failure
Response Time (FFRT).
Flame Failure Response
Time (FFRT) in seconds
Relay Module

0.8 or 1

2.0 or 3.0

EC7810, EC7820, EC/RM7830, 1.0
EC/RM7850

2.0

EC/RM7823, EC/RM7885, EC/ 0.8
RM7890, EC/RM7895, RM7896,
RM7888, RM7838, RM7800,
RM7840

3.0

RM7824

3.0

N/A

–

S

+

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.

3
(76)

Environmental Ratings:
Ambient Temperature:
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.

3/8 (9)
3-9/16 (91)

7/8
(23)
M11460

Weight: 2.5 oz (71g), unpacked.

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

Dimensions: See Fig. 1
Approvals:

NOTE:

Underwriters Laboratories Inc. Listed: File no. MP268, Guide no.
MCCZZ: R7847A, R7847B, R7847C, R7861A, R7886A,
R7848A, R7848B, R7849A, R7849B, R7851B. (R7851C
Pending.)
Underwriters Laboratories Inc. Component Recognized: File no.
MP268, Guide no. MCCZZ: R7824C.
Canadian Standards Association Certified: LR95329-3. (R7851C
Pending.)

Accessories:

.NOTE: EN298 Approved: When these amplifiers are
used with an EC7810, EC7820, EC/RM7830, or
EC/RM7850 Relay Module.

Flame Simulators:
Rectification: 123514A.
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:
1. Your local Home and Building Control Sales Office (check white pages of your phone directory).
2. 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.
65-0109—8

2

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

Table 2. Flame Detection Systems.
Plug-in Flame Signal Amplifiers

Type

Color

Rectification Green

Infrared

Ultraviolet

Optical

Self-Checking

Model

Applicable Flame Detectors
Flame
Failure
Response
Time (sec)a

Fuel

Type

Models

Dymanic SelfCheck

R7824Cb,c, i 3

No

R7847Ah

0.8/1 or 2/3 Gas

Rectifying Flame Rod C7004, C7007, C7011
Complete Assemblies:
Holdersj
C7008, C7009, Q179

No

R7847Ah

0.8/1 or
2/3

Oil

Rectifying Photocell

No

R7847Ah

2/3

Gas, oil, Ultraviolet (Purple
coal
Peeper®)

Dynamic Ampli- R7847Be,h
Check®

0.8/1 or
2/3

Gas

Rectifying Flame Rod C7004, C7007, C7011
Complete Assemblies:
Holdersb
C7008, C7009, Q179

Dynamic Ampli- R7847Be,h
Check®

0.8/1 or
2/3

Oil

Rectifying Photocell

Dynamic Ampli- R7847Be,h
Check®

2/3

Gas, oil, Ultraviolet (Purple
coal
Peeper®)

C7012A,C

Dynamic SelfCheck

R7847Cc,f, i 2/3

Gas, oil, Ultraviolet (Purple
coal
Peeper®)

C7012E,F

No

R7848A

2/3

Gas, oil, Infrared (Lead
coal
Sulfide)

C7015

Dynamic Ampli- R7848Be
Check®

3

Gas, oil, Infrared (Lead
coal
Sulfide)

C7015

No

0.8/1 or
2/3

Gas, oil

Ultraviolet
(Minipeeper)

C7027, C7035, C7044g

Dynamic Ampli- R7849Bd
Check®

0.8/1 or
2/3

Gas, oil

Ultraviolet
(Minipeeper)

C7027, C7035, C7044g

Dynamic SelfCheck

R7861Ac,f

0.8/1 or
2/3

Gas, oil, Ultraviolet
coal

Blue

Dynamic SelfCheck

R7886Ac,f

2/3

Gas, oil, Ultraviolet (Adjustable C7076
coal
Sensitivity)

White

Dymanic Ampli- R7851B
Check®

0.8/1 or 2/3 Gas, oil, Optical (UV, IR,
coal
Visible Light)

C7927, C7935, C7915,
C7962

Dynamic SelfCheck

2/3

C7961

Red

Purple

R7849A

R7851Cc

Gas, oil, Ultraviolet (Purple
coal
Peeper®)

Gas, oil, Optical (UV only)
coal

C7024E,F

C7003, C7010, C7013,
C7014d
C7012A,C.

C7003, C7010, C7013,
C7014d

C7061

a Flame Failure Response Time (FFRT) depends on selection of amplifier and 7800 SERIES Relay Module.
b R7824C is used only with the 24 Vdc RM7824 Relay Module and C7024E,F Flame Detectors.

c 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.

d Use only Honeywell part no. 38316 Photocell.
e Circuitry tests flame signal amplifier 12 times a minute during burner operation and shuts down burner if amplifier fails.
f 200/220/240 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.

g 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.
h R7847A,B Amplifiers with 0.8/1 second FFRT should not be used with C7012A,C Solid State Ultraviolet Detectors.
i 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.
j Order flame rod separately; see flame detector Instructions for holder.

3

65-0109—8

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

1.

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.

INSTALLATION

2.
3.
4.

3.
4.

Installing Flame Detector
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...
1.

2.

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.
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.

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.

WARNING

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 manufacturer 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.

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
1. Wiring must comply with all applicable codes,
ordinances and regulations
2. Wiring (where required) must comply with NEC
Class 1 (Line Voltage) wiring.
3. 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.

Installing Plug-In Flame
Signal Amplifier (Fig. 2)

Fig. 2. Installing flame signal amplifier.

Wiring

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

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.

65-0109—8

1.
2.

4

Remove the 7800 SERIES Relay Module from the
wiring subbase.
Refer to Fig. 3 for proper flame detector wiring.

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

C7076A,D ULTRAVIOLET DETECTOR

FLAME ROD

PHOTOCELL
XF

XF

XG

XG

6

REMOTE
SENSOR

F
3a

INFRARED (C7015)
F
G

WHITE
BROWN

F

2b

5

G

4

SHUTTER

8
2a
L1 1

3

SHUTTER

L2 2

ULTRAVIOLET (C7027/C7035/C7044)
1

7

3b

EARTH
GROUND

C7076A
OR
C7076D
TERMINAL
BLOCK
L1 (HOT)
L2 (COMMON)

3

BLUE
7800 SERIES

G WHITE
F

G

5

L2

22

OPTICAL C7927A
SOLID STATE SELF-CHECKING
ULTRAVIOLET (C7012E,F)

BLUE

F
1

WHITE
G

SOLID STATE
ULTRAVIOLET (C7012A,C, C7961E)
4

2

2

5

F
G
L1
L2
GND

BLUE
YELLOW
BLACK
BLACK
GREEN

F
G
22
N

BLUE

2

YELLOW
WHITE

BLUE
YELLOW
WHITE

L2
L1
L2

WHITE
BLACK
BLACK

3

SOLID STATE SELF-CHECKING
ULTRAVIOLET (C7024E,F – E SHOWN)

SOLID STATE SELF-CHECKING
ULTRAVIOLET (C7061A)

2

F
G
22

3

F
G
22
L2
3
L2

WHITE

BLUE
YELLOW
WHITE
WHITE
RED
BLACK

1

! 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.

2

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.

3

! 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.

4

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

5

GND (GREEN) LEAD WIRE ON C7961E ONLY.

M20309

Fig. 3. Flame detector wiring.

5

65-0109—8

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

3.

Disconnect power supply before making wiring
connections to prevent electrical shock and equipment
damage.
4. All wiring must comply with appropriate electrical codes,
ordinances and regulations including NEC Class 1 (Line
Voltage) wiring where required.
5. Use recommended wire size and type no. 18 copper
conductors TTW(60C) or THW (75C) or THNN(90C).
6. 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.
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.
(1) Enclose scanner wiring without armor cable in
metal cable or conduit.
(2) Follow flame detector Instructions.
7. Check wiring, see Fig. 4.
8. Install 7800 SERIES Relay Module.
9. Restore power to the 7800 SERIES Relay Module.
Flame detector wiring is shown in Fig. 3.

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

FLAME SIMULATOR
TEST JACK

CHECKOUT

M11459A

Fig. 4. Flame signal measurement with meter.

Preliminary Inspection
Make certain that:
1. Wiring connections are correct and all terminal screws
and electrical connections are tight.
2. Proper flame failure response time is selected.
3. Amplifier is securely mounted on the 7800 SERIES
Relay Module.
4. Detectors are properly positioned and cleaned
according to Detector Instructions.
5. Correct combination of amplifier and flame detector is
used.

1.
2.
3.

Connect blue leadwire from detector to terminal F and
white leadwire from C7027/C7035/C7044/C7061 to
terminal G.
Connect blue leadwire from detector to terminal F and
yellow leadwire from C7012/C7024/C7961 to terminal
G.
Follow lightoff Instructions for applicable 7800 SERIES
Relay Module.

Flame Signal Measurement (Fig. 4)

Measuring Flame Signal With 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

Consult Instructions for applicable 7800 SERIES Relay
Module or Keyboard Display Module.

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.

65-0109—8

6

Table 3. Flame signal.
Flame Detector

Minimum Acceptable
Steady dc Voltagea

Flame Signal Amplifier

Flame Rod Photocell
C7012A,Cc

R7847A,Bb

C7012E,Fc

R7847Cd,e

C7015A

R7848A,Bb

C7024E,F

R7824Cd,e

C7027A
C7035A
C7044A

R7849A,Bb

C7927
C7935
C7915
C7962

R7851Bb

C7061A

R7861Ad

C7076A,D

R7886Ad

C7961E

R7851Cd

1.25 Vdc

Maximum Expected dc Voltage
5.0 Vdc at Keyboard Display Module
or on volt-ohmmeter.

a 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.
b The flame amplifiers are Ampli-Check® type.
c 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.
d 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).
e 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
minimum acceptable voltage, check the flame detector
installation and circuitry in the following procedure.
1.

2.

3.

4.

5.

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.
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 accumulated dirt.
For a flame rod, make sure:
a. There is enough ground area.
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 window, lens, and inside of the sight pipe as applicable.

7

6.
7.
8.
9.
10.

With the burner running, check the temperature at the
detector. If it exceeds the detector maximum rated
temperature:
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).
Make sure that the flame adjustment is not too lean.
Make sure the optical detector is properly sighting the
flame.
If necessary, resight or reposition the detector.
If you cannot obtain proper operation, replace the
plug-in amplifier.
If you cannot yet obtain proper operation, replace the
flame detector.

IMPORTANT
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.

65-0109—8

Automation and Control Solutions

Honeywell International

Honeywell Europe S.A.

Honeywell
1985 Douglas Drive North
Golden Valley, MN 55422

Control Products
Honeywell Building
17 Changi Business Park Central 1
Singapore 486073

3 Avenue du Bourget
1140 Brussels
Belgium

65-0109—8

Honeywell Limited-Honeywell Limitée
35 Dynamic Drive
Scarborough, Ontario
M1V 4Z9

G.R. Rev. 01-02

Printed in U.S.A. on recycled
paper containing at least 10%
post-consumer paper fibers.

Honeywell Latin American
Region
480 Sawgrass Corporate Parkway
Suite 200
Sunrise FL 33325

www.honeywell.com



---

Source Exif Data:

File Type                       : PDF
File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.4
Linearized                      : Yes
Encryption                      : Standard V1.2 (40-bit)
User Access                     : Print, Copy, Fill forms, Extract, Assemble, Print high-res
Subject                         : Product Data
Modify Date                     : 2002:05:30 11:20:26-04:00
Create Date                     : 1999:09:30 14:22:37Z
Page Count                      : 8
Creation Date                   : 1999:09:30 14:22:37Z
Mod Date                        : 2002:05:30 11:20:26-04:00
Producer                        : Acrobat Distiller 5.0 (Windows)
Author                          : Honeywell
Metadata Date                   : 2002:05:30 11:20:26-04:00
Creator                         : Honeywell
Description                     : Product Data
Title                           : 65-0109 - R7824, R7847, R7848, R7849,R7851,R7861, R7886 Amplifiers fir 7800 SERIES Relay Modeles
Page Mode                       : UseOutlines

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