Greenheck Amplifier for 7800 Series Relay Module Manual
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R7824, R7847, R7848, R7849,
R7861, R7886 Amplifiers for
7800 SERIES Relay Modules
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.
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.
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 plugin 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.
® U.S. Registered Trademark
Copyright © 1998 Honeywell Inc. • All Rights Reserved
PRODUCT DATA
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.
• 0.0 to 5.0 Vdc Flame signal strength reading range.
• Color coded label identifies flame detection type:
Green—rectification.
Purple—ultraviolet.
Red—infrared.
Blue—pulsed rectification.
• 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, 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: R7824C, Series 2 or greater, and R7847C,
Series 4 or greater, pulse shutter when signal of
1.5 Vac is sensed.
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.
Contents
Application ............................................................................. 1
Features ................................................................................ 1
Specifications ........................................................................ 2
Ordering Information ............................................................. 2
Installation ............................................................................. 4
Checkout ............................................................................... 6
65-0109-6
R7824, R7847, R7849, 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.
Flame Failure Response Time :
See Table 1.
Table 1. Relay Module Flame Failure Response Time (FFRT).
Relay Module
EC7810, EC7820,
EC/RM7830, EC/RM7850
RM/EC7823, RM/EC7885,
RM/EC7890, RM/EC7895,
RM7896, RM7888, RM7838,
RM7800, RM7840
RM7824
Flame Failure Response
Time (FFRT)
0.8 or 1.0
seconds
2.0 or 3.0
seconds
1.0
2.0
0.8
N/A
3.0
3.0
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.
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.
Dimensions:
See Fig. 1.
S – +
FLAME AMPLIFIER
3
(76)
3/8 (9)
3-9/16 (91)
7/8
(23)
M11460
Fig. 1. Flame amplifier dimensions in in. (mm).
Weight:
2.5 oz (71g), unpacked.
Approvals:
Underwriters Laboratories Inc. Listed: File no. MP268, Guide no.
MCCZZ: R7847A, R7847B, R7847C, R7861A, R7886A,
R7848A, R7848B, R7849A, R7849B.
Underwriters Laboratories Inc. Component Recognized: File no.
MP268, Guide no. MCCZZ: R7824C.
Canadian Standards Association Certified: LR95329-3.
Factory Mutual Approved: Report J.I.1V9A0.AF.
Industrial Risk Insurers: Acceptable.
NOTE: EN298 Approved: When these amplifiers are used with an EC7810, EC7820, EC/RM7830, or
EC/RM7850 Relay Module.
Accessories:
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 Logistics
Honeywell Inc., 1885 Douglas Drive North
Minneapolis, Minnesota 55422-4386 (612) 951-1000
In Canada—Honeywell Limited/Honeywell Limitée, 155 Gordon Baker Road, North York, Ontario M2H 3N7.
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—6 2
R7824, R7847, R7849, R7861, R7886 AMPLIFIERS FOR 7800 SERIES RELAY MODULES
Table 2. Flame Detection Systems.
Plug-in Flame Signal Amplifiers Applicable Flame Detectors
Type
Rectification
Color
Green
Self-Checking
Dymanic Self-
Check
No
Model
R7824C
R7847A b,c, i h
Flame Failure
Response
Time (sec)
3
0.8/1 or 2/3 a Fuel
Gas, oil, coal
Gas
Type
Ultraviolet
(Purple
Peeper®)
Rectifying
Flame Rod
Holders j
Models
C7024E,F
C7004, C7007,
C7011 Complete
Assemblies: C7008,
C7009, Q179
No
No
R7847A
R7847A h h
0.8/1 or 2/3
2/3
Oil
Gas, oil, coal
Rectifying
Photocell
Ultraviolet
(Purple
Peeper®)
C7003, C7010,
C7013, C7014
C7012A,C.
d
Dynamic
Ampli-Check®
R7847B e,h 0.8/1 or 2/3 Gas Rectifying
Flame Rod
Holders b
C7004, C7007,
C7011 Complete
Assemblies: C7008,
C7009, Q179
Dynamic
Ampli-Check®
R7847B e,h 0.8/1 or 2/3 Oil Rectifying
Photocell
C7003, C7010,
C7013, C7014 d
C7012A,C Dynamic
Ampli-Check®
R7847B e,h 2/3 Gas, oil, coal
Ultraviolet
(Purple
Peeper®)
Infrared Red
Dynamic
Self-Check
No
R7847C
R7848A c,f, i 2/3
2/3
Gas, oil, coal
Gas, oil, coal
Ultraviolet
(Purple
Peeper®)
Infrared (Lead
Sulfide)
C7012E,F
C7015
Ultraviolet
Dynamic
Ampli-Check®
Purple No
Dynamic
Ampli-Check®
R7848B
R7849A
R7849B e d
3 sec
0.8/1 or2/3
0.8/1 or 2/3
Gas, oil, coal
Gas, oil
Gas, oil
Infrared (Lead
Sulfide)
Ultraviolet
(Minipeeper)
Ultraviolet
(Minipeeper)
C7015
C7027, C7035,
C7044 g
C7027, C7035,
C7044 g
C7061 Dynamic
Self-Check
R7861A c,f 0.8/1 or 2/3 Gas, oil, coal
Ultraviolet
Blue Dynamic
Self-Check
R7886A c,f 2/3 Gas, oil, coal
Ultraviolet
(Adjustable
Sensitivity)
C7076 j 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 f e operation and shuts down burner if detection system fails.
d 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.
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 i 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.
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.
3 65-0109—6
R7824, R7847, R7849, R7861, R7886 AMPLIFIERS FOR 7800 SERIES RELAY MODULES
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 revision 4004 or less requires a ten-second delay to start sequence. This applies only to the initial powering of the RM7890.
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, flame safeguard control technician.
4. After installation is complete, check out the product operation as provided in these instructions.
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
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)
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.
1. 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.
2. 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.
3. Be sure the amplifier is firmly in place.
4. Perform all required checkout tests.
Installing Flame Detector
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.
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.
Fig. 2. Installing flame signal amplifier.
Wiring
CAUTION
Electrical Shock Hazard.
Can cause electrical shock or equipment damage.
Disconnect power supply before beginning installation.
More than one disconnection can be involved.
1. Remove the 7800 SERIES Relay Module from the wiring subbase.
2. Refer to Fig. 3 for proper flame detector wiring.
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.
65-0109—6 4
R7824, R7847, R7849, R7861, R7886 AMPLIFIERS FOR 7800 SERIES RELAY MODULES
FLAME ROD
PHOTOCELL
X
X
F
G
INFRARED (C7015)
WHITE
F
BROWN
G
ULTRAVIOLET (C7027/C7035/C7044)
1
F
BLUE
G
WHITE
SOLID STATE
ULTRAVIOLET (C7012A,C)
4
X F
X G
C7076A,D ULTRAVIOLET DETECTOR
6
5
4
3
F
G
3a
SHUTTER
REMOTE
SENSOR
7
3b
L1
2a
8
1
2b
SHUTTER L2 2
EARTH
GROUND
C7076A
OR
C7076D
TERMINAL
BLOCK
3
L1 (HOT)
L2 (COMMON)
7800 SERIES
F G L2 5 22
SOLID STATE SELF-CHECKING
ULTRAVIOLET (C7012E,F)
2
F
G
L1
L2
BLUE
YELLOW
BLACK
BLACK
SOLID STATE SELF-CHECKING
ULTRAVIOLET (C7061A)
2
F
G
22
BLUE
YELLOW
WHITE
L2
L1
L2
WHITE
BLACK
BLACK
3
SOLID STATE SELF-CHECKING
ULTRAVIOLET (C7024E,F – E SHOWN)
2
F
G
22
N
BLUE
YELLOW
WHITE
WHITE
3
2
F
G
22
BLUE
YELLOW
WHITE
L2
3
L2
WHITE
RED
BLACK
1
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
4
RELAY MODULES. INSTALL A 200/220/240 VAC TO 120 VAC, 10VA MINIMUM, STEPDOWN TRANSFORMER (NOT PROVIDED) TO DRIVE
THE SHUTTER MECHANISM.
M11462B
DO NOT USE 0.8/1 SECOND FFRT AMPLIFIER WITH C7012A,C FLAME DETECTOR.
Fig. 3. Flame detector wiring.
5 65-0109—6
R7824, R7847, R7849, R7861, R7886 AMPLIFIERS FOR 7800 SERIES RELAY MODULES
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.
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.
Flame Signal Measurement (Fig. 4)
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.
NEGATIVE (-)
METER LEAD
FLAME SIMULATOR
TEST JACK
POSITIVE (+)
METER LEAD
ONE
MEGOHM/VOLT
METER
CHECKOUT
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.
M11459A
Fig. 4. Flame signal measurement with meter.
Table 3. Flame signal.
Flame Detector
Flame Rod Photocell
C7012A,C c
C7012E,F c
C7015A
C7024E,F
C7027A
C7035A
C7044A
C7061A
C7076A,D
Flame Signal Amplifier
R7847A,B
R7847C b d,e
R7848A,B b
R7824C d,e
R7849A,B b
Minimum Acceptable
Steady dc Voltage
1.25 Vdc a Maximum Expected dc Voltage
5.0 Vdc at Keyboard Display
Module or on volt-ohmmeter e
R7861A d
R7886A d a This minimum or stronger signal can be easily obtained if the detector is correctly installed and positioned to properly sense c the flame. Obtain this voltage before completing checkout.
b 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.
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.
65-0109—6 6
R7824, R7847, R7849, R7861, R7886 AMPLIFIERS FOR 7800 SERIES RELAY MODULES
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 and C7076.
Reversing the leadwires, even momentarily, can destroy the ultraviolet sensing tube.
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 to terminal G.
3. Follow lightoff Instructions for applicable 7800 SERIES
Relay Module.
Measuring Flame Signal
With Keyboard Display Module
Consult Instructions for applicable 7800 SERIES Relay
Module or Keyboard Display Module.
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.
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. 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.
2. 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.
3. 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).
4. For all optical detectors, clean the detector viewing window, lens, and inside of the sight pipe as applicable.
5. 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).
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 plugin amplifier.
10. 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.
7 65-0109—6
R7824, R7847, R7849, R7861, R7886 AMPLIFIERS FOR 7800 SERIES RELAY MODULES
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